JPH06500521A - Microwave package with microwave field modifiers made of discrete conductive elements - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Detailed description of the invention] Microphone with micro-wave modifiers made of discrete conductive elements Rohami packaging technology branch The present invention provides cartons for use in microwave heating, cooking, and baking; Regarding packages, cooking utensils, etc., for more details, please refer to Micro Wataba Modifier Regarding cartons, packages, and cooking utensils that incorporate Fire generates large surface heating that acts on adjacent food and causes it to expand. blowing and/or crisping, or Balance surface heating of underlying food with deep microwave heating, or avoid overcooking of food. and/or microwave the underlying or adjacent food to prevent overcooking. partial protection from direct exposure to energy, or even equivalent micro- Useful for easily creating wave energy fields.

Background of the invention Microwave ovens are used to heat, cook, or bake items, especially foods, very quickly. have the ability to Unfortunately, microwave heating has its own drawbacks. example For example, with today's microwave ovens, microwave heating alone cannot achieve flatness, uniformity, or blowing. It is not possible to obtain the desired results such as grading, crisping, and reproducibility.

Today's methods for achieving these and other desired results in the microwave are Microwave field modifiers such as microwave susceptors and/or microwave shields using an ear device. These devices are assembled into microwave packages. It's embedded. In this application, package includes packaging materials, cartons, containers, and cooking utensils. Includes ingredients, etc.

Microwave susceptors and reflectors, like other materials and structures, are chroma wave reflectance (R), microwave absorption rate (A), and microwave transmittance (T), That is, they collectively have RAT characteristics. The RAT characteristic is the reflected microwave energy (R) is the percentage of microwave energy absorbed. (A) is the percentage of microwave energy transmitted through a material or structure. is measured at (T). Thus, R,A.

and T add up to 100%.

Generally, microwave shields are relatively transparent to microwave energy. Ru. In terms of RAT, shields have a relatively low T value. Remove the microwave shield. An example is a highly conductive material such as aluminum foil. Shielding generally requires no heating. The shield may be a susceptor, i.e. one that produces significant heating. or vice versa. Thus, the shield has a tendency to heat up It is an element with a relatively low T value regardless of the

Typically, a microwave susceptor is a microwave susceptor that A device that responds by generating a significant amount of heat when placed within an energy field. It is a place. The susceptor absorbs some of the microwave energy and converts it directly into heat. exchange. This heat helps break up or brown the food. Thus , the microwave susceptor generally has a relatively large microwave absorption value A . In addition to its high absorption rate, the susceptor converts the absorbed microwave energy into heat. It has a mechanism to For example, heat can be caused by microwave-induced intermolecular action, or Induced currents that cause so-called I2R losses in conductive devices, or between conductive particles, It is caused by dielectric heating of a dielectric material placed between elements or conductive regions. below, Dielectric heating is called fringe field heating or capacitive heating.

As mentioned above, microwave susceptors and reflectors, and other materials and structures Affects the microwave power distribution within the range. That is, these devices Due to AT characteristics, it interacts with microwave energy in the microwave oven and Regulate energy field. Therefore, the microwave energy in the microwave oven or the microwave energy Devices and structures that act to adjust power distribution are herein collectively referred to as It is called a micro watariba modifier.

Patent literature describes the use of microwave heaters (e.g. susceptors) and reflectors in microwave ovens. is filled with various teachings regarding the use of materials and structures for use as . For example, on October 28, 1980, the grant to William A. Plasted et al. U.S. Pat. No. 4,230,924 describes a food product for browning in the microwave Product packaging methods and materials are disclosed. Such materials are aluminum A relatively thin film with a flexible metal coating such as The coating is preferably a thick foil-like dielectric packaging sheet, and the coating is applied onto the packaging sheet. crossed in a cross shape formed by exposing dielectric strips to finely divided into a number of individual metal islands or pads separated by non-metallic gaps. divided. An orthogonal pattern of square metal islands is shown like this , a range of island sizes and island spacings are mentioned.

In thin film embodiments such as Plus Dead, the markings within the thin metal coating are Microwave heating (i.e. electrical current heating with a thin vapor deposited metal coating) and packaging Microwaves enclosed within the sheet enable direct microwave heating of foods, for example. A balance is struck with the degree of wave transparency.

In a relatively thick foil embodiment, the microwave reflective foil can be placed between islands covered with Microwave induction heating (i.e. fringe field heating) on a disposed dielectric substrate strip and the degree of microwave transparency of the sheet through the uncovered dielectric strip. A balance will be achieved.

U.S. Pat. No. 4.883,9 issued to Maynard et al. on November 28, 1989. No. 36 discloses the control of microwave interaction heating by patterned deactivation. It is. This is done by patterning the deactivating portion of the thin film susceptor into an active This is treated as a method for manufacturing a susceptor with a region.

U.S. Patent No. 4°864.089, granted to Chigae on September 5, 1989, Localized microwave radiant heating by using a coating medium is disclosed. Therefore, the conductive material and semiconductor material in the medium are selected and their amounts are adjusted. It is stated that the conversion efficiency can therefore be controlled.

U.S. Patent No. 4.8, granted to James L. Stone on December 12, 1989. No. 68,232 discloses a food package for use in a microwave oven, The elevated heat of the container deposits the metal-containing ink onto the desired area and/or deposits the metal-containing ink onto the desired area. It is stated that the ink containing the ink may be deposited on an area of the container to provide microwave protection. It is being Stone shows no data, such ink deposits are They may be of the same or different thickness and density to provide different degrees of heating and shielding. It states that it is better to

U.S. Patent No. 4,904,836, granted February 27, 1990 for Turbines, etc. No. 1 discloses a microwave heater and its manufacturing method, in which a specific range of reverse Heating is done with a microwave lossy coating material that has a penetration depth and the lossy material is a coating that has areas of lesser or greater depth than other areas of the coating; is provided.

European Patent Application No. 0345523, filed on May 23, 1989, includes at least one surface in which the microwave response is altered by disrupting the surface. A microwave susceptor is disclosed having a plurality of regions including regions.

of microwave oven problems associated with achieving the desired heating, cooking, and baking results. Although some of them have been solved to a degree other than this, these The problem may not have been solved in the same way as the present invention or to the extent provided by the present invention. There is no such thing.

Summary of the invention In one feature of the invention, the earth wall, the bottom wall and the surrounding and top wall are connected to the bottom wall. A microwaveable package is provided having a sidewall forming a closure.

The side walls are arranged on this side to form a vertically oriented, generally continuous annular shield. A micro wand modifier attached to the wall or integrated with this side wall. have

In a second aspect of the invention, the device comprises a first wall and a first microwave field modifier. Microwavable packaging is provided. This micro Watariba modifier The ears are placed on predetermined zones of the wall to form an array of discrete conductive elements. Contains a microwave-activated conductive coating coated in a pattern. do.

In a third aspect of the invention, the earth wall, the bottom wall, and the surrounding and connecting top wall to the bottom wall are provided. A microwaveable package is provided having sidewalls forming a chain. ~ side The walls are arranged vertically so that this sidewall forms a nearly continuous annular shield. with a micro wharf modifier attached to or integrated with this sidewall. do. A micro-crossfield modifier consists of an array of discrete conductive elements. Microwave-activated conductive conductors placed in a pattern on predetermined zones of the wall to coating material.

Brief description of the drawing This specification specifically points out and emphasizes the subject matter that is considered to form the invention. Although the invention concludes with the following claims, the invention may be The following description should be read in conjunction with the accompanying figures in which the features or elements are identically illustrated. Therefore, it is thought that it will be better understood.

FIG. A flat design of separate micro-wader modifiers that can be combined or integrated. It is a front view, Figure 2 is an enlarged partial plan view of the micro crossing field modifier shown in Figure 1. , FIG. 3 shows a variation of the micro-wafer modification that can be incorporated into embodiments of the present invention. It is an enlarged partial plan view of the fire, FIG. 4 shows another variation of the micro-crossing point model that can be incorporated into embodiments of the present invention. It is a plan view of the defier, FIG. 5 is a plan view of yet another modified example of a micro crossing field modifier; Figure 6 is an enlarged partial plane of the modified example of the micro crossing field modifier shown in Figure 5. is a diagram, Figure 7 shows an array of food products with an integral cover in the open position and ready for baking. FIG. 3 is a perspective view of the package of the present invention in which the FIG. 8 is a partial sectional view taken along line 8-8 in FIG. 7, Figure 9 shows a micro wharf where there is no food that can be baked. In Figure 6, the sidewall has been peeled back to better show the modifier. It is a perspective view of a package, FIG. 10 shows a bracket that can be assembled to form the package of FIG. FIG. 11 is a top view of a second preferred package of the present invention; FIG. It is a perspective view similar to the figure, FIG. 12 shows blocks that can be assembled to form the package of FIG. It is a plan view similar to Figure 10 of the rank, FIG. 13 is a perspective view similar to FIG. 9 of a third preferred package of the present invention; the law of nature, FIG. 14 shows a fourth preferred package of the invention including separate top and bottom parts. FIG. 6 is a perspective view similar to FIG. FIG. 15 shows the components forming either the top or bottom part of the package of FIG. 14. FIG. 3 is a plan view of a blank that can be assembled to

Example Briefly stated, the present invention provides one or more micro-crossover modifiers. We provide microwave packages with Preferred micro watarate modification A (an example of which is indicated generally by the reference numeral 20 in FIG. 1) basically consists of a substrate 2 2 and an array formed of a plurality of discrete conductive elements 24 disposed on this substrate. Including A.

Discrete conductive elements 24 preferably apply coating material to regions of substrate 22. formed by coating in turns, more preferably by printing formed by. Element 24 preferably has an elongated portion and/or Preferably, the sides are offset from each other.

Generally, as used herein (and therefore without specific reference numbers), sea urchin, the term elongated has its original meaning, i.e., is significantly long compared to its width. It has the meaning of having a form. Additionally, the elongate elements described herein are preferred. Ideally, it should be almost straight, but it has a snake-like, curvy, wavy shape. shapes and curved shapes are not intended to be excluded. Furthermore, elongated elements , preferably with rounded ends as shown to reduce arcing properties. is attached.

As used herein, the term staggered relationship refers to elongated, square, and rectangular shapes in facing relationship but with staggered ends Although it is not limited to shapes such as shape elements, it is intended to include such shapes. It is something that The offset does not necessarily have to be uniform across the array.

The micro-crossover modifier of the present invention can be applied in pieces covering all or part of the substrate. It is better to have a unit of

Similarly, several modifiers with different effects can be placed in different areas of the same substrate. You may. The modifier may consist of a layered array. for example , one array is preferably placed on both sides of the substrate. In a variant, one or It is better to integrate further modifiers with selected parts of the package. . Here, the package includes packaging materials, cartons, containers, cooking utensils, etc.

Additionally, modifiers may include, for example, strength, arc suppression, and interaction modifiers. layered structure with one or more additional layers for purposes such as fire function, i.e. A laminated structure is preferable. For example, although not shown in the accompanying drawings, Prevent direct contact between the packaging material and adjacent charges, such as a predetermined amount of food. and when the modifier is placed in close proximity to a conductive item. thermoplastic or thermoset coating to protect the Alternatively, a film can be applied to the modifier structure to cover the conductive coating. good. Furthermore, the thermoplastic film is coated with a conductive coating material in a pattern. then the patterned film is printed on paper or paperboard or any other material. Such a layered structure may be created by laminating on a dielectric substrate of .

The discrete conductive elements are preferably pattern coated with the coating material onto the substrate. formed by waving. The notable advantages of this structure are: Compared to current thin-film susceptors, it offers significant cost and equipment savings. That's true. When applying the coating material to the substrate, this is preferably done by printing. More preferably, gravure printing is used. Printing allows other coating processes Benefiting from cost and efficiency savings compared to It is generally readily available to carton manufacturers.

The coating material of the present invention generally includes a resin, a solvent, and a binder containing conductive particles. Including composite materials. Additionally, the coating may include various other components.

A binder system is used to bond the electrically conductive particles into contacting relationship with each other. Furthermore , the binder system preferably functions to bond the coating material to the dielectric substrate. do.

The binder system includes a resin and a solvent. Exemplary preferred resin materials include nitrocellulose Lulose, ethylcellulose, polyvinyl butyral, polyvinylpyrrolidone, Poly(methyl vinyl ether/maleic acid) copolymer resin and acrylic acid resin Contains fat. Nitrocellulose is manufactured by Sun Chemical Co., Cleveland, Ohio. Can be purchased as 18-25CPS RS nitrocellulose from the general printing ink department. Ru. (This solution consists of 17% by weight isopropyl alcohol and 23% by weight ethyl acetate.) and 20% by weight n-propyl acetate. ) Ethyl cellulose is Available as ethylcellulose N-4 from Hercules, Wilmington, AL. Ru. Poly(methyl vinyl ether/maleic acid) copolymer resin is a new -Gantrez registered trademark from GAF Company of Tsane, Sea State. Can be purchased. Gauntlets is a registered trademark of GAF. Gauntlets is currently , three basic forms: Gauntlets AN, Gauntlets ES, and Gantts. Obtained from Let's S. Gauntlets ES-225 is preferred. polyvinyl butyra The tool was purchased from Movital (from Hoechst Celanese, Somerville, New Chassis) It can be purchased under the registered trademark of Mowital. Mobital is available in several molecular weights. Wear. Preferred types are Hoechst Celanese code numbers B-20H and B-30. H, B-20T. Polyvinylpyrrolidone is available from Uniin, New Chassis. Available from GAF and Sigma Chemical Co., St. Louis, Missouri. Ru.

Conductive particles that can be used to create coatings include purely metallic particles, Includes some metal oxides, alloy particles, carbon particles, and graphite particles. Furthermore, conductive Preferably, the particles have an irregular shape, and more preferably are relatively flat. These particles are the most different in shape and size, and all of these particles create electrical connections between the elements. Encourage touch.

A preferred conductive particle found to be satisfactory is flaky nickel HCA-1. Yes, it can be purchased from Novamet, Inc., Zickoff, New Chassis. of Bamet's scaly nickel HCA-1 consists of interconnected and flattened nickel strips. It is a dendritic particle formed of pheroids. Thus, preferred conductive particles are flat It has a dendritic shape. A second preferred particle is Carbon Black Regal from Cabot in Altham It can be purchased under the registered trademark of k　Regal)99　R. This particle is also relatively flat and has a size of about 0.36 nm.

Some other components that can be used as components of coatings include binders, solvents, , emulsifiers, acids, and other components of the coating material to form a coating. Includes liquid materials that are applied in a fluid state and then solidified. Requires some flexibility In coating applications where the coating material is good. Additionally, anti-cure agents or other ingredients are often included in the coating formulation. stomach.

Additionally, an undercoating placed on the substrate prior to printing increases electrical conductivity. Similarly, A top coating placed on the element increases electrical conductivity. Conductive coating below This is further increased by using both coatings and overcoatings. Lower coat The binder of the coating and/or overcoat is the same solvent as the binder of the coating material. The conductivity is further increased when using . Therefore, the bottom coating or the top coating coating is used, more preferably a bottom coating and a top coating are used. Even more preferably, the lower coating or the upper coating is coated. using the same solvent as the coating material, most preferably the bottom coating and the top coating. Use the same solvent as the bonding agent for the coating material.

Furthermore, increasing the acidity of the binder has a positive effect on electrical conductivity. binder The more acidic the material, the greater the conductivity. Thus, the complex acids forming the additive It is advantageous to add acidic binder additives to the coating material. limited to this It is believed that the interfacial chemical effect of adsorption provides this advantage, although this is not necessarily the case. It is.

Adsorption brings the metal particles into closer contact with each other, resulting in better electrical conductivity.

Additionally, salts can be formed with oxides that further free the metal to provide conductivity. can.

FIG. 1 shows an exemplary micro-crossing field modifier embodying the present invention; The modifier is generally designated by the reference numeral 20. The base material 22 in FIG. , cartons for packaging microwaveable foods, i.e. An electrical appliance that heats, cooks, or bakes the contents of a package without removing the meat. 0.508mm which can be packaged suitable for placement in a child microwave (20 points) It is thick carton paper.

Other exemplary materials for substrate 22 include carton paper, coated carton paper, thermoplastic Contains films, thermoplastic nonwovens, thermosetting plastics, or ceramics .

Disposed on the substrate 22 is an array formed of a plurality of discrete conductive elements 24. It is. In FIG. 1, the array has a peripheral zone 2 devoid of any coating material 26. It extends over the entire upper surface 28 of the base material 22 except for the portion 9. The surrounding zone 29 is electrical element 24 and any metallic material disposed adjacent to modifier 20; insulating the edges of the modifier-20 so that substantially no arcing occurs between the edges of the modifier-20; It works like this. Additionally, the array of FIG. 1 extends across the entire surface of the substrate 22. However, it is possible to limit the modifier to one or more zones of the substrate 22. It's okay.

Referring now to the enlarged partial view of FIG. 2, the preferred modifier-20 of FIG. is an element having a length and a width W, respectively, and having a uniform size and shape except for the ends of the column. Contains 24. The array is thus preferably formed into a substantially uniform configuration. It is made up of elements 24. Furthermore, the elements 24 are arranged in straight rows parallel to each other. Aligned lengthwise. These columns are separated by a distance with the reference SL. They are spaced apart in the length direction, with adjacent rows being spaced apart in the width direction by a distance marked SW. are spaced apart. Furthermore, these columns have adjacent elements bearing the reference O8. They have a mismatched relationship so that they are shifted in the length direction by the attached distance. like this The degree of discrepancy between the arrays, expressed as a percentage, is 100xOS/L.

Referring to FIG. 3, a modification of the micro crossing field modifier-120 of the present invention is shown. In this variation, the elongate element 124 has a generally serpentine shape. It has a shape. The length of element 124 is measured along its centerline. Essential Despite the shape of element 124 and the degree of discrepancy, modifier-120 The structure is almost the same as the modifier-20 shown in FIG. Therefore, the base material 22 It may be made of the same dielectric material as the base material 22 in Figure 1, or it may be made of a different dielectric material. It's okay. The elements 124 differ in size and/or shape, and the elements 124 differ in size and/or shape. have the same or different (eg, different surface resistance) coating materials. As shown in the diagram In this array, elements 124 in adjacent columns are approximately 50% staggered.

The modifier-120 in Figure 3 is more isotropic than the modifier-20 in Figure 1. The sex is great. In other words, the effectiveness of the array as a shield depends on the incoming microwaves. is less dependent on the orientation of the array relative to the Using the RAT test described below If we plot the R value against the degree of rotation over 360°, we get a sinusoidal curve. A curve is obtained. For modifier -20 in Figure 1, the maximum R value is compared This part of the curve is relatively wide. Additionally, the low R portion of the curve is relatively narrow. No. For modifier-120 in Figure 3, the curves have almost the same shape, but the maximum The R value is low, and the low R portion of the curve is narrower, while the high R portion of the curve is wider. write Therefore, the modifier-120, which is more isotropic than the second modifier-20, is , waves enter the microwave from all angles, so the maximum R value is low. Provides better shielding.

However, the modifier in FIG. approximately perpendicular to element 24 (i.e. the high R range for one is for the other Layer the array (single basis) to screen waves entering at low R angles. It can be made even more isotropic by printing on both sides of the material. Wear. An example of this is shown in FIG. 7 and will be described below. This is shown in Figure 3. Provides an isotropic modifier with higher R than Modifier-120.

Referring to the second modification shown in FIG. A-220 includes a dielectric substrate 2 on which a staggered array of square elements 224 are disposed. 22, and the substrate has an uncoated peripheral zone 229. Ru. Despite the shape of element 224 and the degree of discrepancy, modifier-22 0 has almost the same structure as the modifier 20 shown in FIG.

Thus, substrate 222 may be made of the same dielectric material as substrate 22 of FIG. May be made of different dielectric materials or may be of different size and/or shape Often, elements 224 are coated with the same or different coating materials (e.g., coats with different surface resistances). It is better to have a Element 224 is shown without rounded corners. However, this excludes square and rectangular elements with rounded corners in advance. It's not something I'm trying to do.

As shown, in this array, elements 224 in adjacent columns are approximately 50% staggered. There is. Due to this discrepancy, the modifier −22 made of square elements 224 0 is orthogonal, both as a shield and as a susceptor or heater. more effective than aligned squares.

Furthermore, modifier-220 in FIG. 4 is similar to modifier-20 in FIG. It has greater isotropy than modifier-120 in FIG. Therefore, the model in Figure 4 The FIFIER-220 has a lower maximum R than any of the previous examples.

Next, referring to FIGS. 5 and 6, there are still other micro wharf modifiers 320 is shown, which includes an array of figure 7 shaped elements 324 and a dielectric substrate 32. It has 2. FIG. 6 is a partially enlarged view of the modifier 320. 7 figure shape Element 324 has three elongated sections arranged side by side in vertically extending rows. has been done.

The length of the elongate section in this embodiment is the maximum path along the centerline. This example Then, the three possible paths are of equal length. In this example column, the figure 7 shaped element 3 The handles of 24 are interlocked in the arm direction of adjacent figure 7 shaped elements 324. Furthermore, The arms of the figure 7 shaped elements 324 in adjacent rows are connected to the arms of the figure 7 shaped elements 324 in adjacent rows. 7-shaped elements 324 that are partially laterally interlocked between the arms and laterally interlocked; Some of the arms of are in parallel relationship.

The spacing between adjacent figure 7 shaped elements 324 and the size of the figure 7 shaped elements 324 , the width of the elongated portion of these figure-7 shaped elements, and the dielectric loss characteristics of the material of the base material 322. It is possible to vary the fringe field heating in such arrays by changing the I can do it. This modifier-320 is compared to modifier-20 in Figure 1. It is highly isotropic. That is, the RAT characteristics of these modifiers-320 are: When such a modifier-320 is placed in a microwave oven, the position changes. The maximum R value is low.

” Like the duplex, the shield is relatively transparent to microwaves. In other words , the T value of the shield is relatively low.

Thus, the T-value of the shield is less than or equal to about 40%, and more preferably less than or equal to about 10%. most preferably about 5% or less. Since the shielding object has a low T value, it generally has a low R High value. The shielding is designed to prevent overheating in certain areas, i.e. corners and edges. This is particularly useful for reducing the overall speed of microwave cooking.

Modifiers measure their reflectance, absorption, and transmittance for microwaves, i.e. It is characterized by its RAT value. However, the shielding is limited to RAT, especially R RAT values are particularly useful with respect to shieldability determinations because they are characterized with respect to It is.

One way to measure the RAT value is to use the Hewlett-Baracked equipment listed below. Model 8616A Signal Generator, Model 8743A Reflection-Transmission Test Unit , model 841. IA harmonic frequency converter, model HP-8410B network arc analyzer, model 8418A secondary display holder, model 8414A polar display Unit, Model 8413A Phase Gain Indicator, Model 5920 Low Power Waveguide End 1, and two 5281A coaxial waveguide adapters. In addition to this, digital A millivolt meter is used.

The RF calibrated output of the 8616A signal generator was transferred to the 8743 Eight Reflection-Transmission Test Unit. Connect the RF large input. 8411A harmonic frequency converter with 8743A reflection-transmission test Plug into the test unit cabinet and 8410B network analyzer . 8410B network analyzer test channel output, reference channel output, and the test phase output to the test amplitude input and reference input of the 8418A sub display holder. , and the test phase input, respectively. 8418A secondary display holder is 8 Has a cabinet connection to the 414A pole display unit. 8413A phase gay The on-line display has a cabinet connection to the 8410B network analyzer. 8 The amplitude and phase outputs of the 413A phase gain indicator are measured using a digital millivolt meter. is connected to the input of

Setting up the 8616A signal generator is done as follows. That is, the frequency is 2.4 Set to 50GH2, turn on the RF switch, turn on the ALC switch, and start transmitting. Allow the signal to stabilize, zero the DBM meter using the ALC calibration output cup, and reduce the attenuation to 1. Set to 1db operating range. The frequency range of the 8410B network analyzer 2.5, which must bring the reference channel level meter into the "working" range. No. Amplitude gain knob and amplitude vernier to measure reflectance and transmittance, respectively. Set the knob appropriately to bring the voltmeter reading to zero.

The diameter of the micro-crossover modifier sample is 8.89 cm (3.5 inches). It is.

For reflection, place the 8743A reflection-transmission test unit in reflection mode. AS2 81 Coaxial Waveguide Adapter to the "Unknown" Port of the 8743 Eight Reflection-Transmission Test Unit Connect to. Complete shield (aluminum foil) of 5281 dosuke waveguide adapter Place it flat between the reflective side and the 329OA low power waveguide terminal. 8410B nettowa Set the amplitude voltage to zero using the amplitude gain knob and amplitude vernier knob on the arc analyzer. Set. In other words, the sample consists of a 5281 Dosuke waveguide adapter and a 5920A low power guide. It is placed between the wave tube terminal and the attenuation voltage is measured. Usually four readings per sample is obtained and averaged. Rotate the sample 90° clockwise for each measurement. No. After measurement 2, the sample is turned over and the following two totals αJ are performed. polarized isotropic For specimens with a specific orientation, orient the specimen to obtain the maximum and minimum readings. Care must be taken to ensure that

The R value is the maximum reading. Furthermore, these samples were rotated little by little instead of 90＠. It's okay.

For transmission, place the 8743A reflection-transmission test unit in transmission mode. ], O db attenuator to the "input" port of the 8743A reflection-transmission test unit and the second 5 Place it on the transmission side of the line between it and the 281A dosuke waveguide adapter. two 5281A The coaxial waveguide adapters are aligned and held fixedly together. 8410B nettowa Zero the amplitude signal voltage using the amplitude gain knob and amplitude vernier knob on the peak analyzer. Make it. placing the modifier to be tested between two waveguide adapters; Measure the decay voltage.

Four readings are obtained as described above for reflection measurements.

Reflection and transmission values must be calculated in the same way, i.e. by average or maximum. No.

Absorption is calculated by subtracting the transmission and reflection measurements from 1.00. .

If a micro-transfer modifier is placed in competition with a food charge, the network The RAT value measured by the analyzer is different from the true RAT value. food and ma Microwave Watariba modifiers are used to compete for available microwave energy. Ru. This conflict is caused by a generator connected in parallel to two impedance charges. It can be analogized to suit a circuit with The generator uses a magnetic tube provided, one impedance charge is the food charge and the other impedance charge is The gas charge is a micro-crossing field modifier. The network analyzer mentioned above is , not equipped with a food charge aligner. Thus, adding the food charge to the circuit When the resistance of the micro-transfer modifier increases I don't understand "dance". The “impedance” of the food charge is the modifier. If it is much smaller than the "impedance", most of the microwave energy will be eclipsed. Flows through the goods. Therefore, the design of the modifier is necessarily heated. It should involve some trial and error based on actual foods.

As mentioned above, the susceptor is a microwave modifier and It absorbs energy and heats up considerably when exposed to micro-waders. modif The heating properties of the fire (at least for other micro wataba modifiers) One method to determine is the energy competition test described below. 1.0 31,650 J (30 BTU) per minute when measured on 00 g of water container ), the effective susceptor is preferably has a ΔT of about 32.20C (900F) or greater for two minutes, and more preferably Or about 65. 560C (1500F) or higher, most preferably 93 ．． It has a ΔT of 30C (2000F) or more.

1501 Pyrec containing 100 g of distilled water to perform an energy competition test. An 8.4 mm diameter beaker containing 30 g of Crisco oil In the microwave with a 7 cm (3.33 inch) Pyrex bedding dish. Place it on a rotating body. Place them side by side 9 inches (22.86 cm) from the center. Ku. Take initial oil temperature reading. These were micro-transferred for a total of two minutes. Add the full force of the field. Open the microwave at 30 second intervals, measure and record the temperature. Stir the oil with a thermocouple. This measurement is done to minimize oil cooling. It must be done as quickly as possible. This procedure provides a control standard.

8.89es (3.5 inches) diameter micro watarate mod immersed in oil Repeat the above procedure for the fire sample. Oil used as control standard and Start with oil at approximately the same initial temperature. Modifier immersed in oil Place a non-reactive weight, such as a glass rod, on top of the modifier to keep it in place. It is necessary to place the Data is initial from 21, I OC (700F) By subtracting the temperature deviation from each of the recorded temperatures or adding it to each of these So I decided to adjust the initial temperature to the standard 21, I OC (700F). Therefore, it is better to standardize it.

Once the test is conducted, it can be used to compare various micro-toward field modifiers. One method that can be used compares the temperature change over a two minute period. Thus, oil mono 2 by subtracting the German 2 minute ΔT from the 2 minute ΔT of the oil and susceptor. ΔT in minutes is calculated. Furthermore, the initial temperature of the oil is 21, IOC (700 F) by adding or subtracting the variation from Standardize.

The energy competition test determines how the modifier interacts with the food charge in the microwave. Predict how well it will heat up as accurately as RAT measurement using a network analyzer Can not. However, the use of water is a modifier with respect to the charge. − is attempted to be simulated. Water bag packaging with microwave characteristics of actual food charging The greater the variation from the characteristic, the less accurate this test becomes. Therefore , other amounts of water or comparable charges, with possible micro-crossover modifiers. − Reduce the amount of trial and error required to obtain desired results with actual food charges by comparing It is desirable for use in specific applications where

Despite the above, the micro-transition field modifier of the present invention selects a specific variable. Minimum trial to give desired RAT value and heating characteristics by selectively varying It can be prepared by mistake. Thus, models with a wide range of shielding and heating properties are available. Ability to design a firefighter. Some of these variables are arrays, i.e. elements of Regarding shape, orientation, and placement relative to other factors, some are related to the coating material. , the remainder is the base material or any top or bottom coating that may be applied. related to Broadly speaking, the various variables involved in the preparation of RAT characteristics are What is shown is discussed below with respect to FIG. However, this indication is Applies to all embodiments of the invention.

Array variables include length, width, spacing, and degree of discrepancy between adjacent elements 24. included. One variable is the length of element 24. Generally the maximum length of element 24 The length is preferably about 4 cm or less, more preferably about 3 cm or less. Change The length is preferably 0.5 cm or more, most preferably I CII or higher. In either case, L is less than or equal to the length that induces the arc. Must. Increasing the length within this general range will increase the microwave reflectance. and decrease the microwave absorption and transmission of Modifier-20. Change Increasing the length of element 24 reduces the alternating voltage and current induced within element 24. increases in size and thus arcs across the end-to-end gap between adjacent elements 24. This increases the tendency for overheating to occur within the element 24.

Regarding width W, approximately 0.00254cm (0,001 inch) to approximately 2.54cm ( 0.01 inch (0.01 inch) to about 0.0254 cm (0.01 inch) to about A width of 0.1 inch is more preferred. Width within this general range Increasing W decreases the microwave reflectance and increases the wavelength and wavelength of modifier-20. This increases Modifier-20's response, such as when it comes into contact with food charges. Makes it less sensitive to wavelength changes that may be induced. Furthermore, the elongated element 24 is Preferably about 2:1 to about 200=1, more preferably about 10:1 to about 40 :1 L/W ratio.

The spacing SL between the ends is preferably about 0.0254 cg+(0,01 inch) to about 0.254 cm (0.1 inch), and the ends within this range An increase in the distance SL between the ends or a decrease in the distance SW between the sides Fire-20's microwave reflectance is reduced, microwave absorption rate and microwave increases both the wave transmittance and the fringe field heating of the interfering portion of the dielectric substrate 22. Ru.

The spacing SW between the sides is preferably about 0.0254 cm (0.01 inch). inch) to approximately 0.254 cm (0.1 inch). Between sides within this range Increasing the separation SW reduces both fringe field heating and shielding.

The degree of discrepancy is determined by determining the shielding and heating properties of highly conductive coating materials. The increase is preferably about 30% to 35%.

Coating material variables include resistivity, conductive particle shape and size; Furthermore, the dielectric properties (i.e. dielectric constant, loss factor, and dielectric strength) and dried coat Includes the surface conductivity of the ing material. The surface conductivity of the conductive element 24 is equal to the surface resistivity. relatively high, preferably 100 Ω or less per square and more preferably 10Ω per square or less, and more preferably 10Ω per square or less. More preferably 1 ohm per square or less, most preferably 0.1 Ω or less. Increasing the surface conductivity of element 24 within this range The microwave reflectance of FIFIER-20 is increased proportionally, and the microwave transmission is increased. Decrease rate.

Dry coatings with conductivities in the desired ranges specified above are targeted for specific characteristics. It is created specifically. For example, it is important to deposit a sufficient amount of coating material. be.

The more coating material there is, the thicker the coating material, the more Conductivity increases. The thickness of the coating material is preferably about 0.00025 4 cs (0,0001 inch) to about 0.00762 c layer (0,003 inch) and more preferably from about 0.00127 cm (0,0005 inch) to about It is 0.00508c (0,002 inches).

Furthermore, depending on the application process used, the viscosity of the coating material is also important. . The viscosity of the coating material is preferably about 50 cps to about 7000 cps. It is. When performing gravure printing, the viscosity is preferably #3 Zahn cup When measured using (zahn cup), it is approximately 100 cps to approximately 1.75 cp. It is s. In any case, the viscosity depends on whether the coating material is painted, sprayed, printed, or smeared. Suitable for the selected application process used, such as clean printing or gravure printing. The viscosity must be such that To obtain the desired viscosity, the printing process generally Add resins, solvents, or other additives to the coating material first, as is done It must be added after the

Additionally, applying an undercoat on the substrate before printing increases electrical conductivity. Similarly, the key Placing a top coating over the substrate increases conductivity. Top coating and bottom coating Conductivity is further increased by using both linings.

The binder of the top coating and/or bottom coating is the binder of the coating material. The conductivity is further increased when using the same solvent. Lower coating A top coating is used, more preferably a bottom coating and a top coating. Even more preferably, a bottom coating or a top coating is used. The coating uses the same solvent as the coating material, most preferably the undercoat and The top coating uses the same solvent as the binder for the coating material. Furthermore, for example The top coating made of Gantret AN or Gantret S has been improved by the FDA. Useful for providing a barrier.

Furthermore, increasing the acidity of the binder has a beneficial effect on conductivity. binder acid Further increases in conductivity result in even greater conductivity. Thus, complex acid forming additives It is advantageous to add acidic binder additives to the coating material, such as. to this We believe that, but not limited to, interfacial chemical effects of adsorption provide this advantage. It is being

Adsorption brings the metal particles into closer contact with each other, resulting in better electrical conductivity.

Additionally, salts can be formed with oxides that further free the metal to provide conductivity. can.

Regarding the electrically conductive particles of the coating material of element 24, the electrically conductive particles preferably include 2 5 μm or less in size (i.e. 25 microns is the largest dimension of these particles) ), more preferably a size of 10 μm or less. The finer the particles, the more , coating for a given weight percentage of particles in a given coating material. conductivity increases. Furthermore, a mixture of particles of different sizes can be acts to increase the surface conductivity for a given weight percentage of particles in the material. do. the aspect ratio of a particle, i.e. the ratio of its longest dimension to its shortest dimension , is also important. Large aspect ratios (ie, 10:1 or greater) are preferred. child This is because large aspect ratios result in electrical contact between particles of the solidified coating material. These conductive particles are more susceptible to microwave application than particles with smaller aspect ratios. This is because they are susceptible to heat. Furthermore, particles with high resistivity are Particles with sharp angular shapes and edges act to reduce the surface conductivity. , tend to promote electrical contact between the conductive particles of the coating material, thus , tends to increase the surface conductivity of element 24.

Regarding the dielectric properties of dried binder and other particles, a large dielectric loss factor is caused by dielectric heating ( i.e., designed to increase capacitive heating between conductive particles within conductive element 24. The large dielectric strength reduces the tendency for arcing to occur, and the large dielectric constant reduces the Increases radio wave reflectance and power handling.

The remaining variables include the dielectric properties of the substrate 22 and any optional top coatings (i.e. , dielectric constant, loss factor, and dielectric strength). Regarding the base material 22, a large ratio Dielectric constant has the function of increasing microwave reflectivity and power handling, and large dielectric The loss factor acts to increase dielectric heating, and thus a large dielectric strength reduces the tendency for arcing. and thus arc burning of the substrate 22 tends to prevent scorching. . This limits the carbon particles produced by the arc shorting the elements across the interference gap. This protects the modifier 20 from dielectric breakdown. The same thing can be done with Modify Any attachment that may be provided to separate the air from direct contact with the food. This also applies to optional coatings or undercoatings.

The information indicated regarding the various variables mentioned above is entirely true. but However, there are complex relationships between various variables. This complex relationship makes certain changes By manipulating the number while keeping the remaining variables constant, in a particular case, i.e. , for certain coating materials and patterns, to provide the lowest possible effect. Wear. In contrast, manipulating the same variables has a truly large effect in the second case. be forced to

Although not intended to limit the invention, microorganisms of the invention having desired RAT characteristics may be used. One possible design method for the Kuro Watariba modifier is as follows. dry coating material with the desired conductivity and a suitable substrate (see above). Take out the material. Determine the maximum wire length that can be used without arcing. this is , having a length of up to 4 cm, preferably a series of lines of different lengths of about 11-width. This is done by applying a coating onto the selected substrate. Bee these lines Place it in the micro wharf along with 100g of water in the car (to simulate a food charge).

The line length is selected to be approximately 0% smaller than the minimum line length that will produce an arc. Arepa In the turn, the length, the width W1 of 1■-, the gap SL of 1■ between the ends, and the sides and Coat the lines with a gap SW between them and the side and a deviation between adjacent line rows of 25%. Google.

Determine performance characteristics of the array. Modifiers are used to determine the RAT. It is best to test with a network analyzer. Furthermore, to determine heating properties, energy competition is A comprehensive exam will be held. In a variant, the array is implemented to determine its performance characteristics. It is best to test in conjunction with the actual food charge.

To increase heating and shielding properties, increase wire length and decrease gap size.

Change to a coating material with higher conductivity or use a thicker coating. Attaching a coating (which increases conductivity) increases heating and shielding properties. make it big When heating occurs, the shielding is adjusted to an acceptable degree.

If this array simply adds too much heat to the required shielding, the material Coating materials, base materials, and top or bottom coatings to reduce losses. The dielectric of the coating has been changed to a more conductive coating material. good. Another possible way to increase shielding is to increase the amount of offset. Ru. The methods and list of adjustable variables described above are not intended to be all-inclusive. It shows how adjustments are made to the desired RAT value. Ru.

As mentioned above, the relative RAT value of the micro-crossover modifier of the present invention is The raw surface conductivity or surface resistance, the length, width, spacing, and degree of offset between adjacent elements. specific resistance, shape, size, and aspect ratio of the conductive particles, and the substrate and/or or the dielectric properties of the dielectric binder (i.e. dielectric constant, loss factor, and dielectric strength). Tailored to the specific needs of different foods by selectively varying the parameters. It can be prepared.

To demonstrate the versatility of the micro-crossover modifier of the present invention, three exemplary implementations are provided. Give an example. One embodiment relates to high shielding properties and low heating properties; relates to high shielding properties and high heating properties; one embodiment relates to low shielding properties and high heating properties; Regarding heating characteristics.

Example 1 Exemplary micro crossings of the present invention with relatively high shielding properties and relatively low heating properties The modifier will be explained with reference to FIGS. 1 and 2. The array has a diameter of 0. 1 made of 081 mm (0,0032 inch) monofilament polyester 0.508mm (20 points) thick using 09 mesh silk screen screen printed on carton paper. Approximately 60% by weight of the coating material is silver particles The surface resistance in dry state is less than 0.5Ω per square. this Coatings like this are part of Akeson Industries in Port Hudson, Michigan. It can be purchased from Akesson Colloid Co., Ltd., which is the Electrodag 477SS. Identified.

With further reference to FIGS. 1 and 2, the length of elongate element 24 is 6.35 cm (6.35 cm). , 5 inches) and the width is 0.1102c+ (0,040 inches), and the end to end The sides are 0.406 cm (0.160 inch) apart, and the sides are 0.406 cm (0.160 inch) apart. They are 406 cm (0,160 inches) apart and have a discrepancy (pattern shift). OS is about 25%. The pattern is marked horizontally on the front side of the substrate 22 with elongated elements 24. printed with elongated elements 24 oriented vertically on the back side of the substrate 22. Ru.

Example 2 Exemplary microwave modifications of the present invention with high shielding properties and significant heating properties The arm will be explained with reference to FIGS. 1 and 2. In this example, heat is primarily between elements 24 due to the relatively high conductivity and dielectric properties of the components of the coating material. occurs as a result of fringe field heating or capacitive heating. However, element 24 Some heat is produced by I2R heating of the body.

The surface resistivity of the dried coating material is less than approximately 2 ohms per square. .

The array is made of monofilament polyurethane with a diameter of 0.081 mm (0.0032 inches). 0.508m5 using 109 mesh silk screen made of ester (20 points) Screen printed on thick carton paper.

The coating material used is 47% copper and 53% acrylic binder based coating. This material is manufactured by Akesson Colloid Co., Port Hyeron, Michigan. It can be purchased as Kaesong Copper Electrodac #437.

The array has the same appearance as the array shown in FIGS. 1 and 2. elongated element 24 has a length of 2 cm and a width of 0.081 cm (0,0032 inches). That's it The end-to-end clearance of A is 0.114 cm (0.045 inch), and the side-to-side clearance is 0. ．． 069c■ (0.02 finch), and the deviation is 30%.

Example 3 An exemplary embodiment with low shielding and significant heating is described with reference to FIG. . In this example, the heat is due to the low electrical conductivity of element 224 and the dielectric properties of the coating material components. Due to its electrical properties, it occurs primarily in the element 224 itself.

The array is made of monofilament polyurethane with a diameter of 0.081 mm (0.0032 inches). 109 mesh silks made of ester or similar 18-F multifilament 0.508mm (20 points) thick carton paper base material 222 using clean It is applied in a pattern. The coating material is 60% nickel by weight. and 40% by weight nitrocellulose. Nickel New Chassis It can be purchased from Novamet, Inc., Tschikoff, Texas, as Nickel HCA-A. Identified. Nitrocellulose is a general product manufactured by Sun Chemical Co., Cleveland, Ohio. Available from the Printing Ink Department, this is a nitrocellulose solution #266-133. is identified.

The array preferably has the same appearance as the array shown in FIG. Element 224 is 7mm square , and all sides are spaced 0.6μ apart. Furthermore, element 224 is shifted by 50% ing.

Additional illustrative examples using various binder systems are provided below.

Example 4 Movital B30H 10% solution of polyvinyl butyral This is an illustrative example using. Add 5g of B50H powder to 45g of methanol A 10% solution can be obtained by dissolving it in (chloroalcohol).

Add 75g of Novamet Nickel to this, add 60% nickel and 40% (10%) (Solid resin) Make a resin solution.

The final solution thus contains 75 g of nickel and 50 g of 1.0% resin solution.

This coating material is then screen printed in the same pattern as shown in Figure 1. print The dimensions of this pattern are as follows. End clearance SL is 1.1.43m 5 (0,045 inch), and the side clearance SW is 6.985 ■ (0,275 inch). H), the length is 19.99 mm (0.78 inches), and the width W is 0.78 inches. 889 mm (0,035 inches) with an overlap of 31%.

Additionally, polyvinyl butyral solution (i.e., nickel-free 10% methanol) This coate is applied onto a substrate such as carton paper that has been pre-coated with a layer of solution). If you screen print the glue material using a doctor blade or Meyer rod, Conductivity and reflectance (R) are increased.

The same 10% % solution, the change in RAT properties is similar to that of the second sample with the lower coating. It is the same as the AT characteristic.

Applying a top coating to a sample with a bottom coating made of polyvinyl butyral. Printed with nickel with both bottom coating and top coating If a sample is made with a 100% polyconductivity, the conductivity and reflectance (R) are further increased.

Example 5 This example uses a 20% solution of Gauntletz ES-225. 20% solution is not provided. Start with 20g of supplied materials (50% resin and 50% ethanol solvent) can be obtained by This provides 10 g of resin and 10 g of solvent.

Add 30g of ethanol solvent to the solution to make a 20% resin and 80% solvent solution. . This provides 10g resin and 40g solvent, or a total of 50g solution. to this Added 75g Novamet Nickel, 60% Nickel and 40% (20% Resin) Create a resin solution coating material. The final solution thus contains 75 g of nickel and 5 Consists of 0g of 20% resin solution.

This solution is then screen printed or glued in a pattern similar to that in Figure 1. Labia printing (with slight adjustment to viscosity). The dimensions of this pattern are as follows: It is. The end clearance SL is 1.1.43 gm (0,045 inch), and the side clearance SW is 6.985 mm (0,275 inches) and length is 19.99 mm (0.78 inch), and the width W is 0.889 m5 (0.035 inch). The overlap is 31%.

example The example uses a 10% solution of polyvinylpyrrolidone. A 10% solution contains 5g of Obtained by dissolving polyvinylpyrrolidone powder in 45g of methanol. I can do it. Add 75g of Novamet nickel to this, add 60% nickel and 4 Make a 0% (10% solid resin) resin solution. Thus, the final solution contains 75 g of nitrogen. and 50 g of a 10% resin solution.

This solution is then screen printed in a pattern similar to that of FIG.

The dimensions of this pattern are as follows. The end clearance SL is 1.143++v(0, 045 inches), and the side clearance SW is 6.985 mm (0,275 inches). The length is 19.99 mm (0.78 inches), and the width W is 0.889 mm. 1 (0,035 inches) with an overlap of 31%.

Example 7 This example uses a 5.4% solution of ethylcellulose. The 5.4% solution is 2. It can be obtained by starting with 2 g of ethylcellulose resin. new Benton S, available from National Lead Chemical Co., Hightstown, Chassis. Add to this 0.5 g of an anti-cure agent such as D2. Unii, New Chassis UNILETS 7055 (modified with fumaric acid) available from Union Camp Co., Ltd. Add 4.4 g of a modifier such as ester gum binder) Herculon D (hydrogenated metal) available from Hercules, Wilmington, AL. Add 1.8 g of a plasticizer such as ester gum). In addition, 32.1g of n-plane Add lopyl acetate as a solvent to make a 5.4% ethylcellulose solution. .

Add 59g of Novamet Nickel HCA-1 scales to this, and add 59g of Novamet Nickel HCA-1 scales to and 41% (5.4% resin) ethyl cellulose resin solution coating material. Start.

The final solution thus consisted of 59 g of nickel and 41 g of 5.4% resin solution. .

Apply this solution by screen printing or gravure printing in a pattern similar to that shown in Figure 1. Print (with slight adjustment to viscosity). The dimensions of this pattern are as follows: Ru.

The end gap SL is 1.143 layers (0,045 inches), and the side gap SW is 0.7 00 mm (0,0275 inch) and length is 19.99 mm (0,78 inch). inch), the width W is 0.889 mm (0,035 inch), and the overlap is It is 31%.

Various combinations of relatively high and relatively low shielding properties and relatively high and relatively low heating properties The above examples, including combinations, allow you to design modifiers with virtually arbitrary properties. can do. In the above example, high shielding is approximately 10% transmission or less. High heat is defined as having a temperature of approximately 51.67 degrees (1250F ) or more.

The micro-wafer modifier of the present invention described above can be used, for example, to heat various foods, Can be used in packaging for baking, cooking, etc. Figure 7 Referring to FIG. A package 30 with a chroma wave modifier printed thereon is shown. carton 30 has a box-like container portion 31 and an integral cover 32. carton 30 box shape The container part 31 has a bottom wall 35, side walls 41, 42, 43 and 44 and a reference number 45. Includes four glue allowances with . An integral cover 32 of the carton 30 covers the top wall 36 , side walls 46, 47, 48 and 49, and two glue allowances 49.

A micro crossing field modifier is arranged in the carton 30, and this modification A-baking cupcake batter product 52 It has become.

The carton 30 includes eight commercially available susceptor cups 54; - Available from Ipex, Newton, Sett.: Thin metal coating. including paper cups deposited with butter 52, into which butter 52 is dispensed. Ru. The cup 54 is, in a variant, a microtransfer device designed to provide heating. It may also include a field modifier. These cups 54 are filled with butter 52. centering on a thermoplastic measuring cup 55 placed in the center. and placed in a circular orientation. Even baking, rising of cupcakes It has been found that this form is very effective in performing , and blowing. ing.

Referring to FIG. 9, the side walls 41, 42, 43, and 44 of the carton base 31 are , including a micro crossing field modifier-20 similar to Example 1. Side wall 41.42.4 3 and 44 are covered with an array of horizontally extending elongated elements 24. The outer surfaces of the side walls 41, 42, 43, and 44 are elongated and oriented in the direction perpendicular to the gong. have the same array of new elements. To illustrate this configuration, a portion of side wall 43 is pulled back. It is peeled off (and the adhesive on one side is removed). This is package element 24. Such a two-layer array (i.e., on both sides of the sidewalls) makes such a structure It gives a more isotropic response to differences in position when placed in a gas field. side wall 4 1.42, 43, and 44 modifiers give a shield type around the sides and Slow down the baking speed in sections to ensure even baking.

The top wall 36 of the carton 30 has a second modifier similar to the modifier of FIG. Ears 220 and elements 224 are orthogonally aligned. Top wall of carton 30 The inner surface of 36 is covered with an array of square elements 224 throughout. This mod Fire 220 is similar to that shown in FIG. This modifier-220 is quite This heat inflates the surface of the cupcakes and causes these cupcakes to Helps give the ki a top with a traditional dome-like appearance.

Carton 30 is preferably made from the blank shown in FIG. The blank is A modifier 220 is shown coated on top wall 36. Furthermore, this block The ranks indicate sidewalls 41, 42, 43, and 44 modifiers, and this model The firer is coated on panels 41, 42, 43, and 44, and elongated elements coated on the rear surfaces of panels 41, 42, 43, and 44 24 is not shown. The printed pattern of the coating material is on the wall 41.42.43 , and spaced from the distal and end edges of 44 and spaced apart from the edge of top wall 36 . Separated. Such spacing is necessary for adjacent parts of walls with coatings Make sure that there is no contact with the assembled carton 30, and that the parts of the carton 30 Avoid arcing in these areas.

FIG. 11 is a perspective view of a modified carton 130 that can be cooked in a microwave oven. The carton includes conductive pattern elements 24 on its side walls 141, 142, 143, and square pattern elements 224 on the earth wall 136 and not on the exterior surface of the wall 144; 4 instead of forming an orthogonal array of cartons 30 in FIG. The carton is almost the same as the carton shown in Figure 9, except for the discrepancy between the two.

FIG. 12 shows the carton 130 that can be assembled to form the carton 130 of FIG. Indicates a blank.

FIG. 13 is a perspective view of a modified carton 230 that can be cooked in a microwave oven. The carton 230 has an array of conductive pattern elements 224 inside the top wall 236. It is substantially the same as carton 30 except that it does not have it on its facing surface.

Such a carton 230 can be used as a cupcake like the cupcake shown in FIG. When filled, the cupcakes should be dome-shaped, golden brown, and moist in appearance. It will be very even, but this is similar to the cupcake in package 30 in Figure 11. It's not quite even.

One advantage of this embodiment is that it provides a coating on only one side of the blank. It means that there is a need.

Figure 14 shows a cut, scored, and patterned carton paper blank. 15 is a plan view of carton 330B, which blank is the container of carton 330 of FIG. Can be assembled to form either section 331 or cover section 332 can. This figure shows that the printed pattern of the coating material is on walls 341-344. spaced from the distal and end edges and spaced from the edge of the top wall 336 Show that. Such spacing is necessary to ensure that adjacent parts of the coated wall are assembled. Make sure that there is no contact in the prepared carton, and that those in carton 330 Avoid arcing in the area.

The top portion 332 is configured with respect to the bottom portion 331 such that the top portion 332 snugly covers the bottom portion 331. It is made into a large eel. Side walls 341, 342, 343, and 34 of the bottom 331 4 and the side walls 346, 347, 348 of the top 332, and the inner surface of 350. , a conductive pattern element, such as the array of conductive pattern elements of the carton 30 of FIG. 24 arrays are provided. Thus, when the top 332 covers the bottom 331 , two layers of pattern elements 24 are placed despite the double sidewalls of carton 330. It will be done. Functionally, the sidewalls of this structure are approximately similar to the sidewall portions of carton 30 in FIG. It is thought that it has a similar micro-toad adjustment effect. This example is the 13th Although shown without the top wall modifier as in the embodiment of FIG. A top wall modifier may also be added as in the example.

Again, the advantage of this embodiment is that the coating material is only applied to one side of the blank. This means that it can be printed.

While particular embodiments of the invention have been illustrated and described, there may be no departure from the spirit and scope of the invention. It will be apparent to those skilled in the art that various other modifications and changes can be made without should be obvious. All such variations and modifications within the scope of the invention may be covered by the appended claims. Included within the scope of.

Fig, 3 international search report 1□□Na PCT/IJS 91105336,,N,,11421111. 1. Continuation of own PCT/US91105336 front page (81) Designated countries EP (AT, BE, CH, DE.

DK, ES, FR, GB, GR, IT, LU, NL, SE), AU, J.P. (72) Inventor: Prosis, Robert Lawrence, Ohio, USA 7104 Larchwood Drive, Cincinnati (72) Inventor Tuck, Charles Denver, Ohio, USA Airfield, Oberlin, Drive, 1056

Claims (10)

[Claims] 1. a top wall, a bottom wall, and an encircling side wall connecting the top wall to the bottom wall to form a closure; In a microwaveable package having a sidewall vertically oriented attached to or on this side so as to form a substantially continuous annular shield; A specially designed electrical appliance with a microwave field modifier integrated into the wall. Microwavable package. 2. A second microwave field module is placed on the inner surface of the top wall to generate a significant amount of heat. The top wall is separated from the contents of the package by a top space. 2. The microwaveable package of claim 1, wherein: 3. Microwavable with first wall and first microwave field modifier In a package, the microwave field modifier is a discrete conductive coati in a pattern over predetermined zones of the wall to form an array of elements. a microwave-activated conductive coating; Microwavable package. 4. further comprising a second wall and a second microwave field modifier, the second microphone The radio wave field modifier is configured such that the second wave field modifier constitutes an array of discrete conductive elements. Microwave activated conductive coated in a pattern over predetermined zones of the wall 4. The microwaveable package according to claim 3, having a chemical coating. . 5. a top wall, a bottom wall, and an encircling side wall connecting the top wall to the bottom wall to form a closure; In a microwaveable package having a sidewall vertically oriented attached to or on this side so as to form a substantially continuous annular shield; said microwave field modifier having a microwave field modifier integrated with the wall; The defier is placed in a predetermined zone of the wall to form an array of discrete conductive elements. has a microwave-activated conductive coating arranged in a pattern on the surface. A microwaveable package characterized by: 6. A second microwave field module is placed on the inner surface of the top wall to generate a significant amount of heat. The top wall is separated from the contents of the package by a top space. and the microwave field modifier consists of an array of discrete conductive elements. Microwaves placed in a pattern on designated zones of the wall to form Microwavable according to claim 5, having a wave-activated conductive coating. package. 7. Discrete elements are of equal length and arranged in columns in parallel relationship, A predetermined discrepancy relationship is introduced between disjoint elements placed in adjacent columns. Microwave cooking according to claims 3 to 6, which are adjacent to the rows arranged so as to Possible packages. 8. The microwave field modifier consists of two layers of discrete conductive elements. and the first layer of the element is coated in a pattern on the inner surface of the wall. , the second layer of elements is coated in a pattern on the outer surface of the wall. The microwaveable package according to any one of claims 1, 3, or 5. ge. 9. The first wall has many layers and the microwave field modifier is It has two layers of electrical elements, the first layer of elements being on the surface of the first layer of the first wall. coated in a pattern, the second layer of the element is coated with the second layer of the first wall. 4. The electronic laser according to claim 3, which is coated in a pattern on the surface of the electronic device. ready-to-cook packaging. 10. a first layer of discrete conductive elements; a first layer of discrete conductive elements; 10. Any one of claims 8 or 9 oriented substantially perpendicularly to the layer of Microwavable packaging as described in section.