JPH04166394A - Postcard - Google Patents

Abstract

PURPOSE:To make a cover material easy to peel by forming a gap part where a thermal adhesive resin layer and an adhesive strength adjusting layer are not formed over the range from the main surface of the thermal adhesive resin layer to that of a release layer and bonding the cover material to postcard pasteboard by melting the thermal adhesive resin layer. CONSTITUTION:A cover material 24 contains a base material 28 and an adhesive layer 30 is formed to the base material 28 and a concealing layer 32 is formed to the adhesive layer 30. An adhesive strength adjusting layer 36 is formed to the surface the side of the release layer 34 of the concealing layer 32 and a thermal adhesive resin layer 38 is formed to the main surface of the adhesive strength adjusting layer 36. A gap part 40 where the thermal adhesive resin layer 38 and the adhesive strength adjusting layer 36 are not formed is partially formed over the range from the main surface of the thermal adhesive resin layer 38 to that of the release layer 34. The thermal adhesive resin layer 38 is melted by heating to bond the cover material 24 to postcard pasteboard 22. Since the adhesive strength adjusting layer 36 is formed between the cover material 24 and the thermal adhesive resin layer 38, the cover material 24 is easy to peel off. A recipient peels off the cover material 24 and can apply a seal and writing to the postcard pasteboard 22 by the gap part 40.

Description

[Detailed Description of the Invention] (Industrial Application Field) This invention relates to postcards, and in particular, for example, the confidential information part is hidden during mailing, and the official receipt is concealed after the recipient receives the postcard. The present invention relates to a postcard which can include a top part as appropriate.

(Prior art) In recent years, there has been an increase in the number of mail items containing confidential information, such as notices of bank account balances, etc. However, the field for writing confidential information is hidden during mailing, and the recipient receives the official receipt. Postcards have been developed that are shaped so that their contents can be viewed relatively easily after being removed.

FIG. 16 is a partial sectional view of a conventional postcard of this type.

This postcard 1 is a postcard mount 2 shaped to the size of an official postcard.
This includes a covering material 3 stuck to a part of the postcard mount 2. This covering material 3 includes a base material 4 . An adhesive layer 5 is formed on one main surface of the base material 4 . On one main surface of the adhesive layer 5,
A concealing layer 6 made of aluminum is formed. The base material 4 and the hiding layer 6 are bonded together by an adhesive layer 5. hidden layer 6
A release agent layer 7 is formed on one main surface. A thermoadhesive resin layer 8 is formed on one main surface of the release agent layer 7 . A postcard mount 2 is formed on one main surface of the thermoadhesive resin layer 8 . In the covering material 3, a heat-adhesive resin layer 8 is heated and melted, and is adhered to the postcard mount 2.

However, although the conventional postcard 1 has various advantages, when the covering material 3 is peeled off, it comes off with a jerky texture and is difficult to remove.

FIG. 17 is a partial cross-sectional view showing a postcard 1 whose covering material 3 is gradually peeled off and is easy to peel off when the covering material 3 is peeled off, in order to solve these problems.

This postcard 1 includes a postcard mount 2 formed to the size of an official postcard and a covering material 3 stuck to a part of the postcard mount 2. A cutting cut 9 is formed in the covering material 3. This covering material 3 includes a base material 4 . An adhesive layer 5 is formed on one main surface of the base material 4 . A concealing layer 6 made of aluminum is formed on one main surface of the adhesive layer 5. hidden layer 6
A release agent layer 10 is formed on a part of the surface. An adhesive force adjustment layer 11 is formed on the surface of the hiding layer 6 on the release agent layer 10 side. A thermoadhesive resin layer 8 is formed on the main surface of the adhesive force adjustment layer 11 . A postcard mount 2 is formed on one main surface of the thermoadhesive resin layer 8 . In the covering material 3, a heat-adhesive resin layer 8 is heated and melted, and is adhered to the postcard mount 2.

Then, at the tip of the covering material 3, a linear adhesive portion where the release agent layer 10 is not formed is formed so that the thermal adhesive resin layer 8 and the hiding layer 6 side of the base material 4 are directly adhered in a linear manner. 1
2 exists. In the part where the release agent layer 10 is formed, the base material 4 and the thermal adhesive resin layer 8 are weakly bonded, and in the linear adhesive part 12 where the release agent layer 10 is not formed,
The base material 4 and the thermoadhesive resin layer 8 are strongly adhered to each other. Therefore, it is sufficient to cut it off at the cutting cut 9. Then, on the surface of the postcard mount 2, an information section 13 is formed in which confidential information and the like are written.

The covering material 3 is attached to the postcard mount 2 on the surface of the thermoadhesive resin layer 8 . The information section 13 can be seen through the heat-adhesive resin layer 8 and the adhesive force adjustment layer 11.

(Problems to be Solved by the Invention) However, with the previously proposed postcards, it was difficult to stamp or write on the postcard mount after the covering material was peeled off from the postcard mount. As a result, the person receiving the official receipt was unable to write information on the postcard mount.

Therefore, the main purpose of the present invention is to allow a regular receiver to peel off the covering material relatively easily after picking up the receiver and see the information underneath, and to be able to remove the covering material. A formal receipt is to provide postcards that are easy to peel off and that allow the recipient to write information on the postcard mount.

(Means for Solving the Problems) The present invention includes a postcard mount and a covering material that is attached to the postcard mount and covers at least a part of the base material, and the covering material covers at least a part of the surface of the base material. A release agent layer is formed, an adhesive force adjustment layer is formed on the main surface of the release agent layer, a thermal adhesive resin layer is formed on the main surface of the adhesive force adjustment layer, and the release agent is formed on the main surface of the thermal adhesive resin layer. A gap is formed over the main surface of the layer where the thermoadhesive resin layer and the adhesive force adjustment layer are not formed, and the covering material is a postcard made by melting the thermoadhesive resin layer and pasting it on a postcard mount. be.

(Function) The heat-adhesive resin layer formed on the back side of the covering material is heated and pressurized on the surface of the postcard mount, thereby melting the heat-adhesive resin layer and pasting it onto the postcard mount. Ru. Since the adhesive force adjustment layer is formed between the covering material and the heat-adhesive resin layer, when the covering material is peeled off from a single piece of postcard, it gradually peels off and is easy to peel off.

Further, a void portion in which no heat-adhesive resin layer is formed is formed from the main surface of the heat-adhesive resin layer to the main surface of the release agent layer. Therefore, an authorized receiver can write information on the postcard mount by filling in the gap after peeling off the covering material from the postcard mount.

(Effects of the Invention) According to this invention, when the covering material is peeled off from a single piece of postcard, since the adhesive force adjustment layer is formed between the covering material and the heat-adhesive resin, it gradually peels off and is easy to peel off. .

Moreover, since a gap is formed from the main surface of the heat-adhesive resin layer to the main surface of the release agent layer, where the heat-adhesive resin layer and adhesive force adjustment layer are not formed, it is difficult for the person who takes the regular receiver to take it. After peeling off the covering material from the postcard mount, it is possible to stamp, write, etc. on the postcard mount through the gap, and information can be written on the postcard mount.

The above objects, other objects, features and advantages of the present invention will become more apparent from the following detailed description of embodiments with reference to the drawings.

(Embodiment) FIG. 1 is a perspective view showing an embodiment of the present invention, and FIG. 2 is a partial sectional view taken along line nn in FIG. 1.

This postcard 20 includes a postcard mount 22 formed to the size of an official postcard and a covering material 24 attached to a part of the postcard mount 12. This covering material 24 has cut-off cuts 26.
is formed.

The covering material 24, which is pasted on the surface of the postcard mount 22, particularly on the part where the line-forming part for secret matters such as financial and insurance information is formed, is mainly based on FIG. explain.

The covering material 24 includes a base material 28 made of a material that is relatively flexible and can be cut by hand or with scissors, such as a paper 1 synthetic resin film.

An adhesive layer 30 is formed on one main surface of the base material 28 . Examples of the adhesive forming the adhesive layer 30 include emulsion such as polyvinyl acetate emulsion;
These include latex adhesives, water-soluble adhesives such as water glass and casein, and solvent-based reactive adhesives such as polyurethane.

A concealing layer 32 is formed on one main surface of the adhesive layer 30. This hiding layer 32 is formed by laminating film materials having a hiding power, such as aluminum foil with a thickness of 7 μm, with the adhesive force of the adhesive layer 30.
It may be formed by printing to a thickness of 0 μm,
When the concealing layer 32 is formed of an ink having a concealing property, the adhesive layer 30 is not necessary.

A release agent layer 34 coated with a release agent such as polyethylene, silicone resin, fluorine resin, paraffin, wax, etc. is formed in the central portion of the surface of the concealing layer 32 . The thickness of the release agent layer 34 is, for example, 15 to 20 μm for polyethylene, and 0.5 to 1 μm for silicone resin.

On the surface of the masking layer 32 on the peelable layer 34 side, an adhesive force adjustment layer 36 is formed to have a thickness of, for example, 1 to 5 μm.

The main surface of the adhesive force adjustment layer 36 is coated with a thermoadhesive resin by extrusion while heating, or by dissolving it in a solvent or dispersing it in water and printing with gravure or silk screen. The resin layer 38 is formed to have a thickness of, for example, 10 to 308 m.

This thermally adhesive resin layer 38 is heated at a temperature of, for example, 60°C to 20°C.
It is formed so that it softens and melts at a temperature of 0° C. and can be completely adhered to the postcard mount 22.

Further, a gap 40 in which the thermal adhesive resin layer 38 and the adhesive strength adjustment layer 36 are not formed is formed in a part from the main surface of the thermal adhesive resin layer 38 to the main surface of the release agent layer 34.

The cutting cuts 26 are formed slightly inside the left and right ends of the release agent layer 34 . Further, the cutting cut 26 is formed on the base material 28. Adhesive layer 30. Concealing layer 32, release agent layer 34. It is formed on both the upper and lower ends of the adhesive force adjustment layer 36 and the thermal adhesive resin layer 38.

Then, at the tip of the covering material 24, a line-shaped adhesive without the release layer 34 is formed so that the thermal adhesive resin layer 38 and the hiding layer 32 side of the base material 28 are directly bonded. section 42 is present. In the part where the release agent layer 34 is formed, the base material 28 and the thermally adhesive resin layer 38 are weakly bonded, and in the linear adhesive part 42 where the 1IJjli agent layer 34 is not formed, the base material 28 and the thermally adhesive resin layer 38 are weakly bonded. It is strongly adhered to the adhesive resin layer 38. Therefore, it is sufficient to cut it off at the cutting cut 26.

Then, on the surface of the postcard mount 22, an information section 44 is formed in which confidential information and the like are written. In addition, the information department 44
In order to be able to see through the thermal adhesive resin layer 38 and the adhesive force adjustment layer 36, the thermal adhesive resin layer 38 and the adhesive force adjustment layer 36 need to be transparent or translucent.

In addition, this information part 44 can be used as a lottery part, and this postcard 20 can also be used as a postcard with a lottery.

The covering material 24 is adhered to the postcard mount 22 on the surface of the thermoadhesive resin layer 3'8.

FIG. 3 is a partial sectional view showing a state in which the postcard 20 is cut off at the cutting cut 26 and the covering material 24 is peeled off, and FIG. 4 is a perspective view thereof.

The information section 44 can be seen through the heat-adhesive resin layer 38 and the adhesive force adjustment layer 36.

In addition, after peeling off the covering material 24 from the postcard mount 22, the authorized receiver passes the postcard mount 22 through the gap 40.
It is possible to stamp or write information on the postcard mount 22.

In addition to the above embodiments, examples of the base material 28 include synthetic paper, cellophane, polyethylene, polyester films, and aluminum foil. , release agent layer 34
It is preferable to select a material that is relatively flexible so that the covering material 24 will not be inadvertently peeled off between the eyebrows due to the adhesive force with the adhesive force adjustment layer 36 in the area where the covering material 24 is formed.

Furthermore, if a material with excellent hiding properties, such as aluminum foil, is selected as the base material 28, it is not necessary to form the hiding layer 32 as in the previous embodiment.

The material of the adhesive force adjustment layer 36 is selected in relation to the release agent layer 34. For example, when polyethylene is selected as the resin for forming the release agent layer 34, the adhesive force adjustment layer 36
For example, polyvinyl methyl ether,
Polyvinylethyl ether, polyvinyl isobutyl ether, carboxyl modified acrylic resin, polyamide resin, chlorinated polypropylene, ethylene/acrylic acid copolymer, ethylene/vinyl acetate copolymer, ethylene/ethyl acrylate resin, styrene/butadiene/styrene block copolymer Polymers, styrene/isoprene/styrene block copolymers, polyester resins, terpene resins,
Rosin, ester rosin, hydrogenated rosin, polymerized rosin, butyral resin.

Possible choices include petroleum resin, waxes such as polyethylene wax, paraffin wax, montan wax, and microcrystalline wax, vinyl chloride/vinyl acetate copolymer, and nitrocellulose. Then, the adhesion force adjusting layer 36 can be formed by coating these alone or a mixture of two or more types.

According to the inventor's experiments, in the above-mentioned embodiment, a mixed solution of chlorinated polypropylene and vinyl chloride/vinyl acetate copolymer was applied to the polyethylene layer, that is, the release agent layer 34, to form the adhesive force adjustment layer 36. However, when the blending ratio was 40 to 240 parts of chlorinated polypropylene to 100 parts of vinyl chloride/vinyl acetate copolymer, the best results were obtained when 120 parts of chlorinated polypropylene was blended. Ta.

In addition, in the above embodiment, a mixed solution of a styrene-butadiene-styrene block copolymer and a vinyl chloride-vinyl acetate copolymer is applied to the polyethylene layer, that is, the release agent layer 34, and the adhesive force adjustment layer 36 and the blending ratio of vinyl chloride/vinyl acetate copolymer 10
When the styrene/butadiene/styrene block copolymer was mixed in an amount of 1 to 40 parts relative to 0 parts, the best results were obtained when 10 parts of the styrene/butadiene/styrene block copolymer was blended.

As an example of the thermoadhesive resin, an EVA adhesive is selected. Its composition consists of EVA (ethylene-vinyl acetate copolymer resin), a tackifier, a wax, and an antioxidant, and a plasticizer and a filler may be added as supplements.

Tackifiers include partially hydrogenated rosin glycerin ester, rosin glycerin ester, pentaerythritol modified rosin, petroleum resin, α-methylstyrene/vinyltoluene copolymer, terpene oil polymer, terpene phenol polymer, etc. .

Waxes include paraffin wax, microcrystalline wax, low molecular weight polyethylene wax, and Fischer-Trobsch wax.

Examples include castor wax and chlorinated paraffin.

Examples of antioxidants include hindered phenol compounds, salicylic acid compounds, hesiphenone compounds, benzotriazole compounds, phosphorus compounds, sulfur compounds, and organometallic compounds.

Thermal adhesive resins other than the above examples include styrene-butadiene-styrene copolymer resin, styrene-isoprene-styrene copolymer resin, polyethylene, ethylene-ethyl acrylate copolymer resin, ethylene-acrylic acid copolymer resin, ethylene- Methyl acrylate copolymer resin, ethylene-methyl methacrylate copolymer resin, ethylene-methacrylic acid copolymer resin, ionomer resin, polymethylpentene resin, ethylene-vinyl alcohol copolymer resin, vinylidene chloride resin, vinyl chloride vinyl acetate copolymer resin , polyamide resin, styrene-acrylic copolymer resin, polystyrene resin, polyacrylic acid copolymer resin, polyester resin, polyurethane resin.

You can choose wax etc. When printing or coating these materials, they may be used while being heated, dissolved by cutting, or dispersed in water.

The covering material 24 is adhered to the postcard mount 22 by melting the thermoadhesive resin layer 38 by heating. If heating is performed only after confirming that the covering material 24 is superimposed on the postcard mount 22 at the optimum position, the covering material 24 can be accurately adhered to the optimum position on the surface of the postcard mount 22. Therefore, so-called pasting errors, such as not being pasted at the correct position, do not occur when pressure-sensitive adhesives are used.

Furthermore, since a cut-off cut 26 is formed in the covering material 24, even if the content of the genuine receiver is seen by a third party who is not the recipient, the cut-off cut 26 will be damaged. The receiver will know that the contents have been viewed by the recipient.

According to the present invention, since the adhesive force adjustment layer 36 is formed between the covering material 24 and the thermal adhesive resin layer 38, the covering material 24
When it is peeled off from the postcard mount 22, it gradually peels off and is easy to peel off.

In addition, after peeling off the covering material 24 from the postcard mount 22, the authorized receiver removes the covering material 24 from the postcard mount 22, and then removes the postcard mount 22 from the gap 40.
It is possible to stamp or write information on the postcard mount 22.

In the embodiment described above, the release agent layer 34 is formed in the shape of a band at appropriate intervals in the width direction of the base material 28. For example, as shown in FIG. A spot-like portion where the release agent layer 34 is not formed may be provided in the vicinity.

In this way, spots where the adhesive force adjustment layer 36 is exposed are formed in the vicinity of both edges of the base material 28, and when this coating material 24 is pasted on the postcard mount 22, This can prevent the covering material 24 from being inadvertently peeled off from the postcard mount 22 near the longitudinal edges of the base material 28.

FIG. 6 is a sectional view of a main part showing still another embodiment of the present invention, and FIG. 7 is a main part showing a state in which the covering material 24 is peeled off from the postcard mount 22 in the embodiment shown in FIG. FIG.

In this embodiment, the release agent layer 34 and the adhesive strength adjustment layer 36 are not formed at the tip of the covering material 24 so that the thermally adhesive resin layer 38 and the hiding layer 32 are directly bonded to each other in a line shape. A line-shaped adhesive portion 42 is present. Even with such a configuration, the covering material 24 can be easily peeled off from the postcard mount 22 by cutting it off at the cutting cut 26.

FIG. 8 is a sectional view of a main part showing still another embodiment of the present invention. In this embodiment, in particular, the substrate 28. Adhesive layer 30. I! Base layer 32. Release agent layer 34. Separation cuts 26a and 26b are formed at both upper and lower ends of the adhesive force adjustment layer 36 and the thermal adhesive resin layer 38 along the green color of the release agent layer 34, and the separation cuts 2
A cutting cut 26c is formed inside 6a.

In the embodiment shown in FIG. 8, the base material 28 between the cutting cuts 26a and 16c can be separated, as shown in FIG. Note that this separation cut 26
A recess may be formed at the tip of the base material 28 between a and 16c to make it easier to catch a finger or nail.
Alternatively, six pieces may be formed to make it easier to pick with fingers.

FIG. 10 is a plan view of main parts showing another embodiment of the present invention. In this embodiment, in particular, a number of cuts 34 are formed along the circumference of the dressing 24.

Further, each cut 34 is composed of a linear cut portion 36a and an arc-shaped cut portion 36b so that adjacent cuts 34 partially overlap when viewed in the direction in which the covering material 24 is peeled off. In this way, the central portion of the covering material 24 can be easily peeled off.

FIG. 11 is a plan view of essential parts showing a modification of the embodiment shown in FIG. 10. In this embodiment, in particular, linear cuts 34 are formed diagonally around the base material 28 so that adjacent cuts 34 partially overlap when viewed in the direction in which the covering material 24 is peeled off. Even in this case, the central portion of the covering material 24 can be easily peeled off. In the embodiment shown in FIG. 10, the covering material 24 is attached to a part of the postcard mount 22, but as in this embodiment, the covering material 24 is attached to the entire postcard mount 22. Good too.

FIG. 12 is a perspective view showing still another embodiment of the invention, and FIG. 13 is a partial sectional view taken along line xm-xm. FIG. 14 is a partial sectional view showing a state in which the postcard 20 is cut off at the cut-off cut 26 and the covering material 24 is peeled off in this embodiment. In this embodiment, the covering material 24 is integrally formed so as to extend from one end of the postcard mount 22.

FIG. 15 is a perspective view showing still another embodiment of the invention. In this embodiment, similarly to the embodiment shown in FIG. 12, the covering material 24 extends from one end of the postcard mount 22 and is integrally formed. Further, the covering material 24 is formed to have the same size as the postcard mount 22. At the corner of the covering material 24,
A knob 50 for picking with fingers is formed, and this knob 50
The covering material 24 can be easily peeled off by picking it up with your fingers.

As in the embodiments shown in FIGS. 12 to 14 or 15, the covering material 24 may be integrally formed so as to extend from one end of the postcard mount 22, and its size may be arbitrary. May be changed.

[Brief explanation of the drawing]

FIG. 1 is a perspective view showing a postcard according to an embodiment of the present invention, and FIG. 2 is a partial sectional view taken along line 1--2 in FIG. FIG. 3 is a partial sectional view showing a state in which the covering material is peeled off from the postcard mount, and FIG. 4 is a perspective view thereof. FIG. 5 is a perspective view showing another embodiment of the invention. FIG. 6 is a cross-sectional view of a main part showing still another embodiment of the present invention, and FIG. It is. FIG. 8 is a sectional view of a main part showing yet another embodiment of the present invention, and FIG. 9 is a sectional view of the main part showing a state in which the covering material is separated from a postcard mount in the embodiment shown in FIG. FIG. FIG. 10 is a plan view of main parts showing another embodiment of the present invention. - FIG. 11 is a plan view of essential parts showing a modification of the embodiment shown in FIG. 10. FIG. 12 is a perspective view showing still another embodiment of the invention, and FIG. 13 is a partial sectional view taken along line xm-xm. FIG. 14 is a partial sectional view showing a state in which the covering material is peeled off from the postcard in the embodiment shown in FIG. 12. FIG. 15 is a perspective view showing still another embodiment of the invention. FIGS. 16 and 17 are partial cross-sectional views of conventional postcards of this type. In the figure, 20 is a postcard, 22 is a postcard mount, 24 is a covering material, 28 is a base material, 34 is a release agent layer, 36 is an adhesive force adjustment layer, 38 is a thermoadhesive resin layer, and 4° is a gap. . Patent applicant Omatsu Chemical Industry Co., Ltd. Agent Patent attorney Oka 1) Zenkei drawing 3 (no change in content) Figure 1 translation ■7 Figure 3 Fn Figure 4 Figure 5 Figure 8 Figure 9 Figure 10 48a 4151: + 4b Figure 11 Figure 12 ■ 4xnr-” Figure 13 υ Figure 14 j Figure 15 Figure 16 Figure 17 1 Procedural amendment letter 岨 button February 14, 1991 1990 Patent Layer No. 2948112, Name of Invention Postcard 3, Relationship with the Amendment Case Patent Applicant Address 2-1 Kobashi-cho, Tennoji-ku, Osaka Name Noboru Matsuguchi, Representative Director, Omatsu Chemical Industry Co., Ltd. 4. Agent 85411!! Osaka (06) 252
-6888 Address: 4-2-21 Minamihonmachi, Chuo-ku, Osaka Voluntary amendment 6, all drawings subject to amendment

Claims (1)

[Scope of Claims] A postcard mount, and a covering material attached to the postcard mount and covering at least a portion thereof, the covering material having a release agent layer formed on at least a portion of the surface of the substrate. an adhesive force adjustment layer is formed on the main surface of the release agent layer, a heat adhesive resin layer is formed on the main surface of the adhesive force adjustment layer, and the release agent layer is formed on the main surface of the heat adhesive resin layer. A gap portion in which the thermally adhesive resin layer and the adhesive force adjustment layer are not formed is formed over the main surface of the card, and the covering material is pasted on the postcard mount by melting the thermally adhesive resin layer. A postcard.