JPH04314596A - Method for manufacturing removable adhesive postcards - Google Patents

Abstract

PURPOSE:To produce a re-relesable adherent postcard exhibiting a high performance by a method wherein a pressure-sensitive adherent sheet is produced by printing general information, a background, and an adhesive on a substrate, and this sheet is overlappedly folded in two to be bonded under pressure. CONSTITUTION:A printing l of general information and a background is made on the both surfaces of a substrate 10. A printing 2 of adhesive ink is made on the top surface of the substrate 10. Thereafter, perforation lines 3a, 3b and marginals 4 are machined. In this manner, a pressure-sensitive adherent sheet 5 for postcards is obtained. Thereafter, personal information 6, such as addresses, names, and data, is recorded on the sheet 5 using a line printer or the like. The sheet 5 processed in the above manner is cut at the marginal part on one side, thereafter being led into a sheet pressurizing device while being folded at the vertical perforation line 3b so that the adhesive layer is disposed inside. The sheet 5 is cut at the marginal part and the perforation line and pressurized, thereby being formed into a re-releasable adherent postcard 9.

Description

[Detailed description of the invention]

0001

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for producing removable adhesive postcards.

0002

2. Description of the Related Art Confidentiality postcards of the type in which an adhesive label is attached to the area containing personal information to hide the information there are increasing in demand due to the advantage of allowing confidential information to be mailed for the postcard fee. These types of postcards include
Several types are already on the market, but all of them are still unsatisfactory in terms of performance and cost. For example, in the case of the label described in Japanese Utility Model Application No. 63-6870, peeling occurs from a non-adhesive resin layer other than the adhesive layer that is the bonding surface, and once the label is removed from the postcard, it cannot be easily reattached. However, since the adhesive label used has a multilayer structure, many steps are required to manufacture it, making the manufacturing cost extremely high. The cost advantage resulting from the lower postage charges is small.

0003

SUMMARY OF THE INVENTION An object of the present invention is to provide a method for manufacturing high-performance removable adhesive postcards at low cost.

0004

[Means for Solving the Problems] The present invention uses a printing machine to print general information, a base, and an adhesive on a support to obtain a pressure-sensitive adhesive sheet, and record personal information on the sheet. This method of producing a removable adhesive postcard is characterized in that the postcard is folded in half and then stacked, or the sheet is stacked on an adhesive sheet on which personal information is recorded and bonded under pressure.

[0005]

[Operation] First, the present invention will be specifically explained with reference to the drawings. An example of the manufacturing method of the present invention is shown in FIGS. 1 to 5. Figure 1 shows general information and base printing (1) on the front and back sides of the support, and adhesive ink is printed on the surface (2), followed by perforations (3a) and (3b).
) and a plan view showing a pressure-sensitive adhesive sheet for postcards (5) obtained by performing marginal processing (4). Also, Figure 2 shows
FIG. 3 is a plan view showing a sheet obtained by recording personal information (6) such as address, name, data, etc. on this pressure-sensitive adhesive sheet using a line printer or the like. FIG. 3 is a plan view showing a cutaway of the marginal portion of one side of the sheet of FIG. The paper is guided into the device, cut at the marginal portion and perforations, and then subjected to pressure treatment to form a removable postcard (9) having a plan view as shown in FIG. Note that FIG. 5 is a cross-sectional view of the postcard shown in FIG. 4 taken along line A-A.

FIG. 6 shows another form of the pressure-sensitive adhesive sheet for postcards shown in FIG. 1, in which the printing pattern (2) of the adhesive is different. Incidentally, the sheets printed with this pattern do not have the adhesive ink printed on the perforations (3a) and (3b), the marginal area (4), and the sheet edge, so the sheet in Figure 1 does not have a Z-fold. It has the advantage that blocking, which is likely to occur when using this method, does not occur at all. Among these, the most significant effect is to avoid printing adhesive on the perforations.

In both FIGS. 1 and 6, it is preferable to use colored adhesive ink because it can prevent the information in the hidden portion from being seen through. Further, printing with the adhesive ink may be either solid printing or tint pattern printing (fine pattern printing), but tint pattern printing (fine pattern printing) is preferable since it is easy to obtain good releasability. FIG. 7 shows still another form of the pressure-sensitive adhesive sheet for postcards shown in FIG. 1. This is solid printing or ground pattern printing (fine pattern printing)12 of colored ink on the adhesive layer or on the support where the adhesive layer is provided, to prevent information from being seen through the hidden areas of the postcard. can.

Another example of the manufacturing method of the present invention is as follows:
Examples include those shown in FIGS. 8 to 13. In Figure 8, general information and a base are printed on the back side (and in some cases on the front side) of the support, and after adhesive ink 2 is printed on the entire surface, perforation processing (3a) and marginal processing ( 4)
FIG. 2 is a plan view showing a pressure-sensitive adhesive sheet for labels (13) obtained by applying the above steps. Figure 9 also shows a continuous sheet for postcards obtained by printing general information and base (1) on the front and back surfaces of the adhesive sheet, and then perforating (3a) and marginalizing (4). 14) is a plan view showing. Figure 10 also shows how personal information such as address, name, data, etc.
) is a plan view showing a sheet obtained by recording. Figure 11 shows a state in which the label sheet (13) is guided into the pressure sealing device while overlapping the postcard sheet (14) so that the adhesive layer is on the inside, and the two sheets are preliminarily bonded. FIG. The above-mentioned pre-bonded sheet is then cut at the marginal portion and perforations and then subjected to pressure treatment to form a removable postcard having a plan view as shown in FIG. 12. Note that FIG. 13 is a cross-sectional view of the postcard shown in FIG. 12 taken along line BB.

FIG. 14 shows another form of the pressure-sensitive adhesive sheet for labels shown in FIG. 8, in which the printing pattern (2) of the adhesive is different. Incidentally, in the case of the sheet printed with this pattern, adhesive ink is not applied to the perforation part (3a), the marginal part (4), and the sheet edge part, so the sheet shown in Fig. It has the advantage that blocking, which is easy to do, does not occur at all. Among these, leaving the perforation portions unsmeared has the most remarkable effect.

In both FIGS. 8 and 14, it is preferable to use colored adhesive ink because it can prevent the information in the hidden portion from being seen through. Further, printing with the adhesive ink may be solid printing or tint pattern printing (fine pattern printing), but tint pattern printing (fine pattern printing) is preferable since it is easy to obtain good releasability. FIG. 15 shows still another form of the pressure-sensitive adhesive sheet shown in FIG. 8. This is solid printing or ground pattern printing (fine pattern printing) of colored ink on or below the adhesive layer.
It is possible to prevent the information in the hidden part from being seen through.

[0011] Examples of the adhesive used in the present invention include ethylene-vinyl acetate resin, acrylic resin, vinyl chloride resin, vinylidene chloride resin, synthetic rubber resin, and natural rubber resin. Those having a glass transition point of -100 to 0°C are preferred. Pigments are usually added to adhesives to improve blocking resistance, such as silica, kaolin, clay, calcium carbonate,
Examples include aluminum hydroxide, zinc oxide, titanium oxide, melamine resin particles, benzoguanamine resin particles, and starch particles. Incidentally, the pigment usually has a content of 10 to
It is used in a range of 500% by weight.

[0012] The adhesive may further contain casein,
Water-soluble polymers such as agar, gum arabic, sodium alginate, starch, oxidized starch, esterified starch, carboxymethyl cellulose, hydroxyethyl cellulose, polyvinyl alcohol, polyvinylpyrrolidone, polyacrylic acid, styrene-butadiene latex, acrylonitrile-butadiene latex, etc. Latex, rosin resins and their derivatives, terpene resins, coumaron indene resins, xylene resins, alkylphenol resins, tackifiers such as C5 to C9 petroleum resins, various paraffin waxes, fatty acids and their derivatives, higher alcohols, metals. Mold release agents for soaps, silicones, etc., adhesive-containing capsules and oil capsules to improve adhesion, auxiliary agents such as antistatic agents, thickeners, dispersants, preservatives, antioxidants, defoaming agents, etc. may be added.

[0013] As the ink for the adhesive, either an aqueous system or an organic solvent system can be used, but usually an aqueous system ink containing the above adhesive as an emulsion is used. The present invention uses an ink containing the above components for gravure printing,
Printing machines such as letterpress printing, offset printing, screen printing, and flexo printing typically produce dry weights of 2 to 20 g/m2.
A pressure-sensitive adhesive sheet is obtained by printing on a support so as to have the following properties.

Among the pressure-sensitive adhesive sheets prepared in this manner, when the adhesive-printed parts are overlapped facing each other and bonded by applying a pressure of 1 kg/cm2, the JI
10g/measured according to SK 6833-1980
Exhibits T-type peeling force of 25 mm or less, and 300 kg/
50g/25m when joined with cm2 pressure
When the removable postcard of the present invention is formed, those that are set to exhibit a T-peel force of m or more have adhesion (does not cause peeling of the bonded surface when unintended) and peelability (easily peels when necessary). It is particularly preferable because it has an extremely good balance of peeling.

Examples of the support used for forming the pressure-sensitive adhesive sheet or the adhesive sheet for postcards include wood-free paper, synthetic paper, impregnated paper, laminated paper, metallized paper, coated paper for printing ( Multicolor foam paper, slightly coated paper, coated paper,
(art paper, cast paper, etc.), and coated recording paper (thermal recording paper, pressure-sensitive copying paper, electrostatic recording paper, thermal transfer receiver paper, photographic paper, inkjet recording paper, etc.). Note that the paper-making method used for these is not particularly limited, and recycled pulp from used paper may be included.

[0016] For printing general information, base printing, or tint pattern printing on the support or adhesive sheet, oxidative polymerization type ink, evaporation drying type ink, penetrating drying type ink,
General-purpose inks such as UV curable inks are used, and printing methods such as letterpress printing, offset printing, flexographic printing, screen printing, and gravure printing are used. Pressure-sensitive adhesive sheets or adhesive sheets with general information, base printing, adhesive ink printing, and background pattern printing if necessary,
Usually, the material is then subjected to appropriate processing such as marginals, perforations, and punching, and then Z-folded or rolled up.

[0017] Personal information such as address, name, data, etc. is further recorded on the pressure-sensitive adhesive sheet or adhesive sheet as necessary using a line printer or the like. When folding the thus obtained pressure-sensitive adhesive sheet in half to make a removable postcard, for example, in the case of the sheet shown in FIG. 2, first the sheet shown in FIG.
After cutting one marginal part as shown in the figure, fold it in half at the vertical perforation so that the adhesive layer is on the inside and guide it into the pressure sealing device.Then, after cutting the marginal part and the perforation, pressure bonding is carried out. A removable postcard as shown in FIG. 5 is thus formed.

On the other hand, when the pressure-sensitive adhesive sheet thus obtained is used as a label sheet, for example, in the case of the sheet shown in FIG. 8, the sheet is coated with an adhesive layer on a postcard sheet as shown in FIG. After being guided into the pressurized sealing device while overlapping each other so that they are on the inside, and pre-bonded as shown in FIG. 11, the marginal part and perforations are cut, and then pressure bonded to form a removable postcard as shown in FIG. 12. is formed.

The pressure sealing device used in the present invention is most preferably of a type that guides the sheet through a marginal hole and has a pressure treatment function, but the guidance method is not limited to the marginal method. Usually, a machine is used that is equipped with appropriate locations that can perform processes such as slitting, cutting, folding, and pressing sheets. Pressure treatment is usually performed using a pressure roll at a pressure of 50 to 1000 kg/cm.
It is carried out under a pressure of 2. At that time, prepare the sheet for 30~
Since the adhesive strength becomes stable when heated to 60°C, it is more preferable to use a heating device.

[0020] Recording devices used in the present invention include wet or dry electrophotography, thermal transfer method, heat-sensitive recording method, electrostatic recording method, electrolytic recording method, impact method, inkjet method, silver salt photography, etc. equipment is used.

Examples [0021] Examples of the present invention will be described below, but it goes without saying that the present invention is not limited only to these examples. In the examples, unless otherwise specified, "part" means part by weight, and "%" means weight %.

Example 1 (Preparation of adhesive ink) Acrylic acid ester emulsion (manufactured by Japan Synthetic Rubber Co., Ltd., trade name: A) was used as an adhesive.
E-923), 100 parts (dry weight), 100 parts of synthetic silica (manufactured by Mizusawa Chemical Industry Co., Ltd., trade name: MIZUKASIL P-832) as a pigment, and 40 parts of gelatinized starch,
An adhesive ink was obtained by adjusting the solid content concentration to 40%.

(Preparation of pressure-sensitive adhesive sheet for postcards) 157
General information and a base are printed on both sides of g/m2 multicolor foam paper, the adhesive ink described above is printed on the surface, and margins and perforations are further processed to produce a pressure-sensitive adhesive sheet for postcards as shown in Figure 1. A Z-fold was obtained. The adhesive ink was printed so that the dry weight was 8 g/m2.

(Preparation of removable postcard) Personal information such as address, name, data, etc. was recorded on the pressure-sensitive adhesive sheet for postcards using an electrophotographic line printer to make a sheet as shown in Figure 2. Later, one marginal portion of this sheet was cut to obtain a sheet as shown in FIG. Next, this sheet was folded at the vertical perforations so that the adhesive layer was on the inside, and guided into the pressure sealing device to cut the marginal part and the perforations, and then pressure bonded under a pressure of 300 kg/cm2. A removable postcard as shown in FIG. 4 was obtained. The removable postcard label thus obtained exhibited extremely stable removability.

Example 2 (Preparation of continuous sheet for labels) General information and a base were printed on the back side of an 80 g/m2 impregnated foam paper, and the above adhesive ink and tint pattern were printed on the front side, and a margin and a sewing machine were printed. A Z-fold of the pressure-sensitive adhesive sheet for labels as shown in FIG. 15 was obtained by processing the edges. The adhesive ink was printed so that the dry weight was 8 g/m2.

(Preparation of continuous sheet for postcards) 157g/m
2. Print general information and a base on both sides of the multicolor foam paper, and then process the margins and perforations to create the image shown in Figure 9.
A Z-fold of a continuous sheet for postcards was obtained.

(Preparation of removable postcards) Addresses and addresses are printed on the above-mentioned continuous sheet for postcards using an electrophotographic line printer.
After recording personal information such as names and data to form a sheet as shown in Fig. 10, the above-mentioned pressure-sensitive adhesive sheet for labels is overlaid on this sheet and guided into a pressure sealing device for preliminary adhesion. I got a sheet like this. Next, after cutting the marginal part and perforation, 300kg/cm2
A removable postcard as shown in FIG. 12 was obtained by pressure bonding under the pressure of . The removable postcard label thus obtained exhibited extremely stable removability.

[0028]

Effects of the Invention In the present invention, since a pressure-sensitive adhesive sheet for removable postcards is manufactured using a printing machine, removable postcards with high performance can be obtained at extremely low cost.

[Brief explanation of drawings]

[Fig. 1] Fig. 1 shows a pressure-sensitive material for postcards obtained by printing general information and a base on the front and back sides of the support, and then printing adhesive ink on the surface, followed by perforation processing and marginal processing. FIG. 2 is a plan view showing an adhesive sheet.

FIG. 2 is a plan view showing a sheet obtained by recording personal information such as address, name, data, etc. on the pressure-sensitive adhesive sheet of FIG. 1 using a line printer or the like.

FIG. 3 is a plan view showing a marginal portion of the sheet shown in FIG. 2 cut away;

FIG. 4 is a plan view showing a removable postcard obtained using the sheet of FIG. 3;

FIG. 5 is a diagram illustrating a cross section of the removable postcard of FIG. 4 taken along line AA.

6 is a plan view showing another form of the pressure-sensitive adhesive sheet for postcards shown in FIG. 1. FIG.

7 is a plan view showing still another form of the pressure-sensitive adhesive sheet for postcards shown in FIG. 1. FIG.

[Figure 8] Figure 8 shows the pressure-sensitive adhesive for labels obtained by printing general information and a base on the back side of the support, then printing adhesive ink on the front side, and then perforating and marginalizing the support. FIG. 3 is a plan view showing the sheet.

FIG. 9 is a plan view showing a continuous sheet for postcards obtained by printing general information and a base on the front and back surfaces of the adhesive sheet, and then perforating and marginalizing the sheet.

10 is a plan view showing a sheet obtained by recording personal information such as address, name, data, etc. on the sheet shown in FIG. 9 using a line printer.

FIG. 11 is a plan view showing a state in which the sheet of FIG. 8 is superimposed on the sheet of FIG. 10 and guided into a pressure sealing device, and the two sheets are preliminarily joined.

FIG. 12 is a plan view of a removable postcard obtained using the sheet of FIG. 11.

FIG. 13 is a diagram illustrating a cross section of the removable postcard of FIG. 12 taken along line BB.

14 is a plan view showing another form of the pressure-sensitive adhesive sheet shown in FIG. 8. FIG.

15 is a plan view showing still another form of the pressure-sensitive adhesive sheet shown in FIG. 8. FIG.

[Explanation of symbols]

1...General information, base printing 2...Adhesive printing area 3a...Perforation 3b...Vertical perforation 4...Marginal 5...Pressure-sensitive adhesive sheet for postcards 6...Personal data 7…Postcard 8...Label 9...Removable postcard 10...Support 11...adhesive layer 12... Background pattern printing 13...Pressure-sensitive adhesive sheet for labels 14...Adhesive sheet for postcards

Claims (8)

[Claims] Claim 1: A pressure-sensitive adhesive sheet is obtained by printing general information, a base layer, and an adhesive on a support using a printing machine, and the sheet is folded in half and stacked, or the sheet and the adhesive are bonded together. 1. A method for producing a removable adhesive postcard, which is obtained by stacking adhesive sheets and bonding them under pressure. 2. A pressure-sensitive adhesive sheet is obtained by printing general information, a base layer, and an adhesive on a support using a printing machine, and after recording personal information on the sheet, the sheet is folded in half and stacked, 2. The method for producing a removable adhesive postcard according to claim 1, wherein said sheet and an adhesive sheet on which personal information is recorded are stacked and bonded under pressure. 3. The pressure-sensitive adhesive sheet exhibits a T-peel force of 10 g/25 mm or less when the adhesive-printed parts are stacked facing each other and bonded under a pressure of 1 kg/cm2, and The method for producing a removable adhesive postcard according to claim 1 or 2, which exhibits a T-peel force of 50 g/25 mm or more when bonded under a pressure of 300 kg/cm2. 4. The method for producing a removable adhesive postcard according to claim 1, wherein the pressure sensitive adhesive sheet is perforated and then pressure bonded. 5. The method for producing a removable adhesive postcard according to claim 4, wherein the adhesive is printed on at least the perforated portions. 6. The method for producing a removable adhesive postcard according to claim 1, wherein a colored adhesive ink is used as the adhesive. 7. The method for producing a removable adhesive postcard according to claim 6, wherein colored adhesive ink is printed in the form of a tint pattern. 8. The method for producing a removable adhesive postcard according to claim 1, wherein the pressure-sensitive adhesive sheet is printed with tint pattern.