JPH0325595B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a method for manufacturing a double-glazed glass window with a frame, and more specifically, a method for manufacturing a double-glazed window with a frame, and more specifically, a method for integrally molding frames such as sashes, gaskets, frames, frames, moldings, etc. made of synthetic resin around the periphery of double-glazed glass. The present invention relates to a method for manufacturing a framed double-glazed window characterized by:

Double-glazed glass, in which multiple glass plates are separated by placing spacers around the periphery to form a hollow layer, and a sealant layer is formed around the periphery to seal the hollow layer, has excellent heat insulation and soundproofing performance. It has excellent performance and anti-condensation properties, and is widely used as window glass or door glass for buildings, vehicles, various devices, show cases, etc. Such double-glazed glass has a sash, gasket, and
A frame is completed by attaching several parts to form a frame and is used for a window or door, but it is time-consuming to attach and assemble the frame parts, and the installation of the frame is time-consuming. There is a risk that water may enter through the gaps in the glass and corrode the surrounding areas of the double-glazed glass, reducing the above-mentioned performance of the double-glazed glass. In addition, frame parts such as sashes, gaskets, frames, etc., for example, each part made of aluminum, plastic, rubber, etc., must be formed into a predetermined shape by extrusion molding, etc., and each part must be manufactured. This takes time and effort, which increases costs.Furthermore, if the structure of the frame parts is complex, it becomes even more difficult to manufacture, leading to further increases in costs.

The present invention aims to improve the various problems described above, and has conducted various research on methods for assembling double-glazed glass and methods for attaching frames such as sashes, gaskets, frames, frames, moldings, etc. to the peripheral area of double-glazed glass. It was invented as a result of research, and its gist is that it is a spacer that has a leg on one side and a spaced part of multiple glass plates on the other side, and the spacer has a spacer that has a leg part on one side and a spaced part of a plurality of glass plates on the other side. A bonding layer is provided between the peripheral part of the glass plate and the side surface of the spaced part of the spacer, and the plurality of glass plates are spaced at a predetermined interval. Prepare double-glazed glass with a hollow layer formed therebetween, place the peripheral part of the double-glazed glass in a mold having a space of a predetermined shape, and form the double-glazed glass by the surface of the peripheral part of the double-glazed glass and the inner surface of the mold. A synthetic resin or its raw material that can be solidified is injected into the injection space where the resin is poured, and after the synthetic resin has solidified, the double glazing glass is taken out of the mold and a synthetic resin frame is integrally molded around the periphery of the double glazing glass. The present invention relates to a method for manufacturing a framed double-glazed window.

According to the present invention, part of the assembling process of double-glazed glass, that is, the process of forming a sealant layer around the peripheral part of the double-glazed glass, the forming process of frames such as sashes, gaskets, frames, frames, moldings, etc., and the peripheral part of double-glazed glass Since the frame can be attached at the same time, the number of manufacturing steps for frame-equipped double-glazed windows can be significantly reduced, and costs can be reduced.

In addition, by molding synthetic resin around the periphery of double-glazed glass, we can create complex-shaped sashes with excellent decorative properties.
Gaskets, frames, frames for frames, moldings, etc. can be easily formed. Furthermore, since the frame made of synthetic resin can be integrally molded directly around the periphery of the double-glazed glass, it is possible to eliminate gaps between the periphery of the double-glazed glass and the frame, allowing water to enter through this gap. It is possible to prevent the deterioration of the heat insulation performance, soundproofing performance, and dew condensation prevention performance of the double-glazed glass due to a decrease in the performance of the adhesive layer of the double-glazed glass, a decrease in the moisture absorption performance of the desiccant, etc.

Hereinafter, the present invention will be explained in detail with reference to the drawings.

Figures 1 and 2 are drawings showing the process of assembling double-glazed glass. First, a spacer 3 is arranged between the peripheral parts of the glass plates 1 and 2, and the glass plates 1 and 2 are spaced approximately parallel to each other at a predetermined distance. The double-glazed glass 4 is assembled by facing and spaced apart from each other. In this double-glazed glass, a bonding layer 5 made of adhesive, adhesive tape, sealant, etc. is interposed between at least the inner surface of the peripheral portion of the glass plates 1 and 2 and the side surface of the spacer 3. , 2 and the spacer 3 are integrally joined or temporarily fixed. In order to more securely seal the hollow layer 4 formed by the glass plates 1 and 2 and the spacer 3, the bonding layer 5 is applied to the entire area between the inner surface of the peripheral portion of the glass plates 1 and 2 and the side surface of the spacer 3. It is particularly preferable that the bonding layer is provided around the circumference, and that the bonding layer is selected from highly airtight adhesives or sealants.
Note that the glass plates 1 and 2 and the spacer 3 are integrally bonded or temporarily fixed by the bonding layer 5. The example shown in FIG. 1 is an example in which a bead-shaped sealant 6 is sandwiched and pressed between the peripheral portions of the glass plates 1 and 2 and a spacer 3, and a bonding layer 5 is provided.

The shape of the spacer 3 used in the present invention is selected from among structures that have the function of spacing the glass plates 1 and 2 in their peripheral areas and the function of reinforcing the synthetic resin frame described later. It is selected and used as appropriate. Further, it is more preferable that the spacer 3 has a structure having a space for containing a desiccant agent to maintain the dew-proofing performance within the double-glazed glass.

The spacer 3 shown in FIGS. 1 to 5 is a typical example applicable to the present invention, and includes leg portions 7 for reinforcing a frame made of synthetic resin, a glass plate 1 having a substantially rectangular cylindrical shape, 2, a stepped portion 31 having a substantially L-shaped cross section that supports the peripheral edge of each of the spaced glass plates, and a space 9 for containing a desiccant. It is something that The leg portions 7 of this spacer are separated from the spacer portions 8 by the first to
5, the leg 7 is provided on one side of the spacer and the spacing section 8 is provided on the opposite side of the mold in which the leg 7 is provided. Of course, the spacer 3 of the present invention is not limited to this example; for example, as the structure of the spacing portion 8, spacers of various shapes conventionally known as spacers for double-glazed glass can be used as well. The reinforcing portion for reinforcing the frame made of synthetic resin is not limited to the leg portions 7 as described above, but also those having various shapes that provide a reinforcing effect can be similarly used. Examples of the material for this spacer include metals such as aluminum and steel, which provide the function of spacing the glass plates 1 and 2 and the function of reinforcing the synthetic resin frame, or highly rigid plastics. When separating the glass plates 1 and 2 using the spacer 3 having the above-mentioned shape, the spacer 3 has a portion 8 of the glass plates separated from each other.
The spacer 3 is positioned between the peripheral parts of the glass plates, and the legs 7 of the spacer 3 are positioned so as to reinforce the integrally molded synthetic resin frame. or,
When the two glass plates 1 and 2 are separated by the spacer 3, the space between the periphery of the glass plates 1 and 2 and the side surface of the spaced part 8 of the spacer 3, and the end face of each glass plate 1 and 2 A bonding layer 5 made of adhesive, adhesive tape, sealant, etc. is placed between the glass plate periphery and the step 31 of the spacer 3.
The glass plates 1 and 2 and the spacer 3 are integrally bonded or temporarily fixed by this bonding layer.

In order to integrally mold a frame made of synthetic resin around the periphery of the double glazing glass assembled in this manner, the periphery of the double glazing glass is placed in a mold having a space of a predetermined shape.

FIG. 3 is a partial sectional view of the mold 10 showing a state where the peripheral part of the double-glazed glass 4 is placed on the lower mold 12 of the mold 10, and FIG. FIG. 3 is a partial cross-sectional view of the mold showing a state in which the upper mold 11 is arranged so as to form an injection space around the lower mold 12 in alignment with the lower mold 12.

The mold 10 has an upper mold 11 and a lower mold 1 as shown in Figs.
2, and the double-glazed glass 10 is located between the upper mold 11 and the lower mold 12. The peripheral portion of the double-glazed glass 10 consists of a peripheral upper surface 14, a peripheral lower surface 15, and an end surface 16, and the widths of the peripheral upper surface 14 and the peripheral lower surface 15 are each a predetermined width. As described later, there are cases where the frame is not formed on the entire peripheral area of the double-glazed glass, so the surface where the peripheral frame is formed is called the frame-forming surface, and the double-glazed glass including the peripheral side where the frame is not formed is called the frame-forming surface. The surface of the glass other than the peripheral portion will be referred to as a non-frame forming surface. Therefore, the upper peripheral surface 14, lower peripheral surface 15, and end surface 16 in the figure are frame-forming surfaces, and the other surfaces 17 and 18 of the double-glazed glass are non-frame-forming surfaces. The inner surface of the mold 11, which is not in contact with the non-frame forming surface, is surrounded by the inner surface 19 of the upper mold 11, the inner surface 20 of the lower mold 12, and the frame forming surface of the double-layered glass.The inner surface of the mold is a hollow space 21 in which a frame of a predetermined shape can be molded. A synthetic resin or its raw material that can be solidified is injected into this space 21 through an injection hole (not shown) provided at the dividing line 22 of the upper and lower molds. There is no particular restriction on the position of the injection hole, but please refer to RIM below.
In the case of the injection molding method, it is often provided on the parting line of the mold, and in the case of the injection molding method, it is often provided on one mold.

In the present invention, it is not preferable that synthetic resin or its raw material enter from the injection space 21 into the contact surfaces between the non-frame forming surfaces 17 and 18 of the double-glazed glass 13 and the upper mold 11 and the lower mold 12. Therefore, it is preferable to adopt a method of sealing this part if necessary. One method is to provide elastic bodies 23 and 24 having sealing properties on the contact surfaces between the non-frame forming surfaces 17 and 18 of the double-glazed glass 13 and the upper mold 11 and/or the lower mold 12. The elastic bodies 23, 24 may be thin films or relatively thick. Moreover, this elastic body 23,
24 may be attached in advance to the inner surface of the mold, or may be attached to the non-frame forming surface of the double-glazed glass by adhesive or the like. Of course, it does not have to be attached to both in advance, but may be fixed by compression between the double-glazed glass and the mold. The elastic body having this sealing property can be present over the entire non-frame-forming surface, but it is often sufficient to use only the portion that contacts the injection space. Elastic body 2 with sealing properties shown in Fig. 4
3 and 24 are provided only in the portions of the non-frame forming surfaces 17 and 18 of the double-glazed glass 13 that are in contact with the injection space 21, respectively, with a width that can achieve sealing performance. Both elastic bodies 23, 24 also have the role of holding the double glazing 13 in the mold.

The frame needs to cover at least the end face 16 of the double-glazed glass. However, if the frame and the double-glazed glass are bonded only to the end surface 16 of the double-glazed glass, the bonding strength between the two tends to be insufficient, so preferably the peripheral upper surface 14 and the peripheral lower surface 15 of the double-glazed glass
It is bonded to at least one, more preferably both. Therefore, as shown in the figure, the cross-sectional shape of the frame is more generally that the cross-sectional shape of the injection space 21 is approximately U-shaped, but it is of course not limited to this shape. The widths of the upper peripheral surface 14 and the lower peripheral surface 15 may be different lengths or the same length.

As mentioned above, the frame can of course be formed on the entire peripheral area of the double-glazed glass, but it can also be formed on a part of the peripheral area. For example, if we take rectangular double-glazed glass as an example, it is possible to form a frame around all four sides, or to form a frame only on one to three sides.
Furthermore, it is also possible to form a frame on only the four corners or part of the sides of a rectangular double-glazed glass. The cross-sectional shape of the frame is preferably U-shaped as described above, but based on this, it is also possible to further provide irregularities on the surface or change the thickness and width of the three sides of the U-shape. When the length of the frame becomes long (that is, when the length of the injection space becomes long), there is a possibility that if the synthetic resin or its raw material is injected only from one injection hole, it will not be sufficiently distributed throughout the injection space. For this purpose, it is preferable to provide two or more injection holes. For example, when forming a frame around the entire circumference of rectangular double-glazed glass, it may be preferable to provide two or more injection holes, such as injection holes at the four corners. FIG. 6 is a partial cross-sectional view of the double-glazed glass in which a frame is formed, and the frame 25 is the fourth
It is made of a synthetic resin formed by injecting a synthetic resin or its raw material into the injection space 21 shown in the figure and solidifying it.

Various types of double glazing can be used as the double glazing. For example, it may be a simple flat plate type, or it may be bent. In addition, double-glazed glass may be double-glazed glass with a single layer of air space made up of two glass plates, or double-glazed glass with a double-layered air layer made of three glass plates. Furthermore, the air layer may be of a three-layer type. In addition to ordinary glass, double-glazed glass includes tempered glass, laminated glass, molded glass, heat-reflective glass, conductive glass, colored glass, and glass plates with various other treatments. etc.

Further, in the peripheral area of the double-glazed glass, a preferable treatment may be performed to form a frame. For example, a primer may be applied to the peripheral area (frame forming surface) of the double-glazed glass where the frame is formed in order to improve the adhesive strength with the frame. On the other hand, a removable protective coating can be applied to the non-frame forming surface after the frame is formed, or a removable film can be adhered thereto. Similarly, the portion of the non-frame forming surface that is in contact with the frame forming surface may be coated with a paint serving as a sealing elastic body, or may be bonded with a sealing elastic body.

The material of the mold is not particularly limited, but may be a so-called resin mold made of metal, epoxy resin, polyester resin, or the like. In the case of a relatively soft resin type, there is less risk of damaging or breaking the double-glazed glass when it is pressed, and if it also has sealing properties, it is not necessary to use the elastic body with the above-mentioned sealing properties. However, in the case of a mold made of a hard material such as a metal mold, it is preferable to interpose an elastic body in the contact portion with the double-glazed glass. It is preferable that the elastic body is interposed not only in the sealing part but also in other contact parts where there is a risk of damaging or breaking the double-glazed glass. It is preferable that the dimensional accuracy of the mold is high so as not to apply strong force locally to the double glazing glass, and it is also preferable that the dimensional accuracy of the double glazing glass is also high.

Preferably, the mold is a temperature adjustable mold.
In particular, it is preferable to be able to adjust the temperature of at least the mold portion in contact with the injection space. This is because it is often necessary to control the solidification of the solidifiable synthetic resin or its raw material injected into the injection space. The degree of heating or cooling of the mold depends on the type of solidifying synthetic resin injected and its raw material. It is usually preferable to be able to heat up to about 150°C. The mold surface that is in contact with the non-frame forming surface of double-glazed glass often does not require particular temperature control, but it is necessary to adjust the temperature to prevent the intrusion of synthetic resins and their raw materials that can solidify into this area. In some cases, it may be desirable to make adjustments. Further, it is preferable that at least the inner surface of the mold facing the injection space is coated with a mold release agent. Although it is not particularly necessary to apply a mold release agent to the inner surface of the mold that is in contact with the non-frame forming surface of the double-glazed glass, it is of course unlikely that it would be particularly inconvenient to apply it.

The material of the elastic body having sealing properties is as follows:
Synthetic resins, synthetic resin elastomers, rubber, etc. are preferred, but are not limited to these.
It may be made of elastic material such as soft synthetic resin or foamed synthetic resin. It is preferable that these materials have at least more elasticity than the material of the mold. It is preferable that the parts of the elastic body with sealing properties that may come into contact with the solidifying synthetic resin or its raw materials be made of a material with a non-adhesive surface, but even if this is not the case, it may be necessary to apply a mold release agent, etc. A material with a non-stick surface formed thereon may be used. Specific materials include, for example, synthetic resins and synthetic rubbers with non-adhesive surfaces such as fluorocarbon resins, fluorocarbon rubbers, silicone resins, and silicone rubber; soft or semi-rigid polyurethane foams and other foamed synthetic resins; A hollow body made of soft synthetic resin, a composite material such as resin-impregnated paper, etc. are preferable. In addition, relatively soft synthetic resins such as polyethylene, elastomers and rubbers other than those mentioned above may also be used. Further, as an elastic body for protecting the non-frame forming surface of the double-glazed glass,
Although sealing properties are not particularly required, it is possible to use elastic bodies having the above-mentioned sealing properties, as well as other synthetic resins, elastomers, rubbers, paints,
Films and sheets such as paper, and various other materials can be used.

In the present invention, "solidifiable" in synthetic resins or raw materials thereof refers to those that can change from a fluid state to a non-fluid state, and in the case of synthetic resin raw materials, when it becomes a non-fluid state, it is a synthetic resin. means. In the case of thermoplastic resins, they become fluid when heated and melted, and become non-fluid when cooled. Thermosetting resins are liquid to solid in their uncured state, and solid ones become fluidized by heating or the like, and become non-fluidized by so-called curing or crosslinking reactions. In addition, there is also a synthetic resin in a non-fluid state by mixing and reacting solid synthetic resin raw materials that can be in a liquid to fluid state and consisting of two or more components. Solidification in the present invention refers to a change in the state in which the synthetic resin or its raw material, which has been injected into the injection space in a fluid state, becomes a non-flow state within the injection space.

Classifying methods for forming synthetic resins, methods such as injection molding, transfer molding, RIM, and LIM can be used in the present invention. In particular, the RIM method and LIM method, which can inject synthetic resins and their raw materials at relatively low pressure, are preferred. RIM
In the R-RIM method and the LIM method, the method of molding using synthetic resin containing reinforcing materials or its raw materials is sometimes called the R-RIM method or the R-LIM method, but in the present invention, these R-RIM method and R-LIM method can also be used. RIM these below
It is considered as a type of method or LIM method.

Preferred molding methods in the present invention are the RIM method and the LIM method, particularly the RIM method. RIM
(Reaction Injection Moding) and LIM (Liquid
The distinction between injection moldins and injection moldins is not clear-cut, but the former refers to a method in which two or more components are mixed by collision at a relatively high pressure and then injected, while the latter is a method in which two or more components are mixed and injected at a lower pressure. means the method of doing so. Although injection is performed at a relatively high pressure in the RIM method, the pressure is approximately 3 kg/cm ² or less, which is much lower than the pressure normally employed in the injection molding method described below. These molding methods use synthetic resin raw materials consisting of two or more components. For example, they may be a combination of reactive raw materials such as a polyol and an isocyanate compound, or they may be a combination of a polymerizable raw material and its polymerization catalyst such as caprolactam and a catalyst. All of these raw materials are preferably liquids, and these liquids may be in the form of a slurry containing solids such as fillers. In addition to fillers, reinforcing materials, colorants, blowing agents, catalysts, stabilizers, and other various additives may be added to this synthetic resin raw material. Further, it is also possible to fill the cavity space with reinforcing material or the like in advance. This method may be a type of LIM method conventionally called a resin injection molding method.

Synthetic resins obtained by the RIM method or LIM method include polyurethane resin, epoxy resin,
Examples include polyester resin, vinyl ester resin, silicone resin, and nylon-6. Particularly preferred are polyurethane resins, which are obtained primarily by the RIM method from at least two raw materials: a component based on a polyol and a component based on a polyisocyanate compound. In this case, the type,
The mold part in contact with the injection space should be kept at room temperature to 100℃, especially at 40℃.
Preferably, it is heated to ~70°C. In the case of molding other thermoplastic resins, 150℃ or less, especially 50℃ or less
150℃ and 250℃ or less for thermosetting resins, especially 150℃ or less
Preferably, it is heated to 200°C. In the RIM method and the LIM method, solidification occurs by increasing the molecular weight through reaction of synthetic resin raw materials, and the resulting synthetic resin contains so-called thermosetting resin and thermoplastic resin as described above.

Injection molding is used for molding thermoplastic resins and thermosetting resins, and transfer molding is mainly used for molding thermosetting resins. These molding methods require a good seal between the frame-forming and non-frame-forming surfaces since relatively high pressures are used to inject the synthetic resin. Therefore, it is preferable to use a coating with paint or a thin film as the elastic body having sealing properties, and to perform highly accurate molding using a mold with high dimensional accuracy and double-glazed glass. The temperature control of the mold varies depending on the type of synthetic resin, but generally a mold that is heated to room temperature is used.

The thermoplastic resin is heated and melted and injected into the injection space, where it is cooled and solidified. The thermosetting resin undergoes a curing reaction in the injection space and solidifies. Various additives may be added to these synthetic resins as in the case of the synthetic resin raw materials described above. In particular, thermosetting resins are often used as molding materials to which relatively large amounts of fillers and reinforcing materials are added. For example, there are molding materials that contain a filler called BMC and reinforcing materials such as glass fiber. The types of these synthetic resins are not particularly limited, and elastomers and thermoplastic rubbers having rubber elasticity can also be used.

Examples of synthetic resins are listed below, but the synthetic resins that can be used in the present invention are not limited to these.

Thermoplastic resin: polyethylene, polypropylene,
EVA, other polyolefin resins, polystyrene, AS, ABC, other polystyrene resins, polymethyl methacrylate, other acrylic resins, PET, PBT, other polyester resins, nylon-6, nylon 66,
Other polyamide resins, polycarbonate resins, polyurethane resins, polyacetal resins, polyarylene ether resins, polyhalogenated vinyl resins, silicone resins, cellulose resins, or blend resins thereof.

Thermoplastic rubber: polyolefins such as EPDM,
Styrene-butadiene, styrene-isoprene, polyurethane, polyester, ethylene-vinyl acetate, and other thermoplastic rubbers.

Thermosetting resins: unsaturated polyester resins, vinyl ester resins, epoxy resins, silicone resins, phenolic resins, diallyl phthalate resins.

FIG. 7 shows a frame 2 manufactured by the method of the present invention.
FIG. 5 is a partially cross-sectional perspective view of a double-glazed window 26 with a 5-panel.
This framed double-glazed window 26 is for a door to which a frame 25 as a sash is attached, and shows an example in which the cross-sectional shapes of the vertical and horizontal sides are different.
A gasket 27 is attached to this frame 25 and used for a door.

[Brief explanation of the drawing]

Figures 1 and 2 are explanatory diagrams showing the process of assembling double-glazed glass, and Figures 3-5 are diagrams illustrating an example of the method of the present invention, and are partial cross-sectional views of a mold in which double-glazed glass is arranged. FIG. 6 is a partial cross-sectional view of a double-glazed glass window with a frame, and FIG. 7 is a partial cross-sectional perspective view of a double-glazed glass window with a frame obtained according to the present invention. 1, 2: glass plate, 3: spacer, 4: hollow layer, 5: bonding layer, 7: leg, 10: mold, 11: upper mold, 12: lower mold, 21: injection space, 23, 24:
Elastic body, 25: Frame, 26: Double-glazed window with frame.

Claims (1)

[Claims] 1. A spacer having a leg on one side and a spaced part of a plurality of glass plates on the opposite side, such that the spaced part is located between the peripheral parts of the plurality of glass plates. At the same time, a bonding layer is provided between the peripheral portion of the glass plate and the side surface of the spaced portion of the spacer, and the plurality of glass plates are spaced at a predetermined interval,
A double-glazed glass in which a hollow layer is formed between the glass plates is prepared, and the peripheral portion of the double-glazed glass including the legs of the spacer is placed in a mold having a predetermined space. A synthetic resin or its raw material that can be solidified is injected into the injection space formed by the peripheral surface of the glass and the inner surface of the mold, and after the synthetic resin has solidified, the double-glazed glass is taken out from the mold and the synthetic resin is poured into the peripheral part of the double-glazed glass. A method for manufacturing a double-glazed glass window with a frame, characterized in that the frame is integrally molded. 2 There is a method of injecting synthetic resin raw materials into a mold and solidifying them.
A method for manufacturing a framed double-glazed window according to claim 1, characterized in that the method is a RIM method.