JPH0431093A - Mail - Google Patents

Abstract

PURPOSE:To peel a covering material comparatively simply, and to view the content of information by forming the covering material, which is formed integrally with a mount, folded and stuck on the mount, of a release agent layer and an adhesion adjusting layer. CONSTITUTION:There is a linear bonding section 30, to which a release agent layer 24 is not formed, so that a heat-bonding resin layer 2 and the concealing layer 22 side of a base material 28 are linearly bonded directly at the front end section of a covering material 14. The base material 18 and the heat-bonding resin layer 28 are cemented weakly in a section, to which the release agent layer 24 is formed, and the base material 18 and the heat-bonding resin layer 28 are bonded firmly in the linear bonding section 30, to which the release agent layer 24 is not shaped. The material of an adhesion adjusting layer 26 is selected by relationship with the release agent layer 24.

Description

[Detailed Description of the Invention] (Industrial Application Field) This invention relates to postal items, and in particular, for example, conceals the confidential information during mailing, and removes the official receipt after the recipient has received it. Relates to mail that may contain a confidential portion 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. Postal items have been developed in such a way that their contents can be viewed relatively easily after being picked up.

FIG. 12 is a partial sectional view of a conventional mail item of this type.

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

(Problems to be Solved by the Invention) However, although conventional mail items have various advantages, when the covering material is not removed, the covering material peels off and is difficult to remove.

Therefore, the main purpose of this invention is to allow a person who receives a regular receiver to relatively easily peel off the covering material after picking up the receiver and see the information content underneath, and also to remove the covering material. It gradually peels off and is easy to remove.
It is to provide mail.

(Means for Solving the Problems) The present invention includes a mount and a covering material that is formed integrally with the mount, is folded back and affixed to the mount, and covers at least a portion of the mount, and this covering material covers at least a portion of the mount. A release agent layer is formed on at least a part of the surface of the material, and the main surface of the release agent layer is
An adhesive force adjusting layer is formed, a heat adhesive resin layer is formed on the main surface of the adhesive force adjusting layer, and the covering material is a mail piece in which the heat adhesive resin layer is melted and adhered to a mount.

(Function) The heat-adhesive resin layer formed on the back surface of the covering material is heated and pressurized on the surface of the mount, thereby melting the heat-adhesive resin layer and sticking it to the mount.

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 the mount, it gently peels off and is easy to peel off.

(Effects of the Invention) According to this invention, when a thermally adhesive resin is used to adhere a covering material to a mount, when the covering material is peeled off from the mount, the adhesive force adjustment layer is thermally bonded to the covering material. Since it is formed between the adhesive resin layers, it peels off easily and is easy to peel off.

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 a mail piece according to an embodiment of the present invention, and FIG. 2 is a partial sectional view taken along line nn in FIG. 1.

This postal item 10 includes a mount 12 formed in the size of an official postcard.
and a covering material 14 attached to a part of this mount 12. The covering material 14 extends from one end of the mount 12 and is formed integrally with the mount 12, and is folded back and affixed to the mount 12. A cutting cut 16 is formed in this covering material I4.

The covering material 14, which is attached to the surface of the mount 12, particularly on the part where the line-forming part for secret information such as financial information or insurance information is formed, will be explained mainly based on FIG. 2. do.

This covering material 14 includes a base material 18 that is integrally formed by extending from one end of the mount 12, and this base material 18 is made of a relatively flexible material such as paper 1 synthetic resin film, and can be used by hand or with scissors. Made of material that can be cut.

An adhesive layer 20 is formed on one main surface of the base material 18 . As the adhesive forming this adhesive layer 20, for example, an emulsion such as a 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 22 is formed on one main surface of the adhesive layer 20. The hiding layer 22 is formed by laminating film materials having a hiding power such as aluminum foil with the adhesive strength of the adhesive layer 20, but may also be formed by printing with a masking ink, for example.

A part of the surface of the concealing layer 22 is formed with a release agent layer 24 coated with a release agent such as polyethylene, silicone resin, fluorine resin, paraffin, wax, or the like.

An adhesive force adjustment layer 26 is formed on the surface of the hiding layer 22 on the release agent layer 24 side.

The main surface of the adhesive force adjustment layer 26 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. A synthetic resin layer 28 is formed.

This thermally adhesive resin layer 28 is heated at a temperature of, for example, 60°C to 20°C.
It is formed so that it can be softened and melted at a temperature of 0° C. and completely adhered to the mount I2.

The cutting cuts 16 are formed slightly inside the left and right ends of the release agent layer 24 . Further, the cutting cut 16 is formed on the base material 18. Adhesive layer 20. Hiding layer 22, release agent layer 24. It is formed on both the upper and lower ends of the adhesive force adjustment layer 26 and the thermal adhesive resin layer 28.

Then, at the tip of the covering material 14, a linear adhesive portion where the release agent layer 24 is not formed is formed so that the thermal adhesive resin layer 28 and the hiding layer 22 side of the base material 18 are directly adhered to each other in a linear manner. There are 30. In the part where the release agent layer 24 is formed, the base material 18 and the thermally adhesive resin layer 28 are weakly bonded, and in the line-shaped adhesive part 30 where the release agent layer 24 is not formed, the base material 18 and the thermal adhesive resin layer 28 are weakly bonded. It is strongly adhered to the adhesive resin layer 28. Therefore, it is sufficient to cut it off at the cutting cut 16.

A lottery portion 32 is formed on the surface of the mount 12, for example, in which characters such as hit or miss are written. Note that in order to enable the comb portion 32 to be seen through the thermal adhesive resin layer 28 and the adhesive force adjustment layer 26, the thermal adhesive resin layer 28 and the adhesive force adjustment layer 26 need to be transparent or translucent. There is. Further, the comb portion 32 is connected to the release agent layer 2.
It may be formed on the surface of 4.

The covering material 14 is adhered to the mount 12 on the surface of the thermoadhesive resin layer 28 .

FIG. 3 shows a state in which the mail piece 10 has been cut off at the cut-off cut 16 and the covering material 14 has been peeled off.

The comb portion 32 is formed by the thermally adhesive resin layer 28 and the adhesive force adjustment layer 2.
6 can be seen through.

In addition to the above embodiments, examples of the base material 18 include synthetic paper, cellophane, polyethylene, polyester films, aluminum foil, etc. When this covering material 14 is attached to the mount 12, It is preferable to select a material that is relatively flexible so that the coating material 14 does not inadvertently peel off due to the adhesive force with the adhesive force adjustment layer 26 in the area where the release agent layer 24 is formed.

Furthermore, if a material with excellent hiding properties, such as aluminum foil, is selected as the base material 18, it is not necessary to form the hiding layer 22 as in the previous embodiment.

The material of the adhesive force adjustment layer 26 is selected in relation to the release agent layer 24. For example, when polyethylene is selected as the resin for forming the release agent layer 24, the adhesive force adjustment layer 26
Examples of materials include 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, styrene-isoprene-styrene block copolymer, polyester resin, terpene resin, rosin, ester rosin, hydrogenated rosin, polymerized rosin,
Butyral resin petroleum resin etc. and polyethylene wax,
Waxes such as paraffin wax, monk wax, and microcrystalline wax, vinyl chloride/vinyl acetate copolymer, and nitrocellulose can be selected.

Then, the adhesion force adjusting layer 26 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 24, to form the adhesive force adjustment layer 26. 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.

Further, in the above embodiment, a mixed solution of a block copolymer of styrene/butadiene/styrene and a vinyl chloride/vinyl acetate copolymer is applied to the polyethylene layer, that is, the release agent layer 24, and the adhesive force adjusting layer 26 is 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.

Examples of the tackifier include glycerin ester of partially hydrogenated rosin, glycerin ester of rosin, pentaerythritol modified rosin, petroleum resin, α-methylstyrene/vinyltoluene copolymer, terpene oil polymer, and terpene phenol polymer.

Waxes include paraffin wax, microcrystalline wax, low molecular weight polyethylene wax, and Finscher-Tropsch wax.

Examples include castor wax and chlorinated paraffin.

Examples of antioxidants include hindered phenol compounds, salicylic acid compounds, benzophenone compounds, hensitriazole 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, di-engineered styrene acrylic resin, etc. acid methyl 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, they may be used as appropriate while being heated, dissolved in a solvent, or dispersed in water.

The covering material 14 is adhered to the mount 12 by melting the heat-adhesive resin layer 28 by heating.

If heating is performed only after confirming that the covering material 14 is superimposed on the mount 12 at the optimum position, the covering material 14 will be accurately adhered to the optimum position on the surface of the mount 12. Therefore, so-called pasting errors such as not being pasted at the correct position, which occur when anger pressure type adhesives are used, do not occur.

Furthermore, since a cut-off cut 16 is formed in the covering material 14, even if the content of the genuine receiver is seen by a third party who is not the recipient, the cut-off cut 16 will be damaged. The receiver will know that the contents have been viewed by the recipient.

According to the present invention, when the adhesive force adjustment layer 26 is formed between the coating material 14 and the heat-adhesive resin layer 28, the coating material 1
When 4 is peeled off from the mount 12, it peels off gently and is easy to peel off.

In the embodiment described above, the release agent layer 24 is formed in the shape of a band at appropriate intervals in the width direction of the base material 18. For example, as shown in FIG. A spot-shaped portion where the release agent layer 24 is not formed may be provided in the vicinity.

In this way, spots where the adhesive force adjustment layer 26 is exposed are formed near both edges of the base material 18, and when this covering material 14 is attached to the mount 12, This can prevent the covering material 14 from being inadvertently peeled off from the mount 12 near the longitudinal edges of the base material 18.

FIG. 5 is a cross-sectional view of a main part showing still another embodiment of the present invention, and FIG. 6 is a cross-sectional view of a main part showing a state where the covering material 14 is peeled off from the mount 12 in the embodiment shown in FIG. It is a diagram.

In this embodiment, the release agent layer 24 and the adhesive force adjustment layer 26 are not formed at the tip of the covering material 14 so that the thermally adhesive resin layer 28 and the hiding layer 22 are directly bonded in a line shape. A line-shaped adhesive portion 30 is present. Even with such a configuration, the covering material 14 can be easily peeled off from the mount 12 by cutting it off at the cutting cut 16.

FIG. 7 is a sectional view of a main part showing another embodiment of the present invention. In this embodiment, in particular, the base material 18°, the adhesive layer 20,
Hidden layer 22. Release agent layer 24. Cut-off cuts 16a, j'; and cut-off cuts 16b are formed at both upper and lower ends of the adhesive force adjustment layer 26 and the heat-adhesive resin layer 28 along the green line of the release agent layer 24, and the cut-off cuts 16a, j'; A cutting cut 16C is formed on the inside.

In the embodiment shown in FIG. 7, the base material 18 between the cutting cuts 16a and 16c can be separated, as shown in FIG. In addition, this cutting cut 16
A recess may be formed at the tip of the base material 18 between a and 16c to make it easier to catch a finger or nail.
Alternatively, it may be formed into five pieces to make it easier to pick with fingers.

FIG. 9 is a perspective view showing still another embodiment of the invention. In this embodiment, the covering material 14 is formed to have the same size as the mount 12. A knob 33 for picking with fingers is formed at a corner of the covering material 14.

By picking this knob 33 with fingers, the covering material 14 can be easily peeled off.

FIG. 10 is a plan view of a main part showing yet another embodiment of the present invention. In this embodiment, in particular, a large number of cuts 3
4 are formed along the periphery of the dressing 14. Further, each cut 34 is composed of a linear cut portion 36a and an arc-shaped cut portion 36b such that adjacent cuts 34 partially overlap when viewed in the direction in which the covering material 14 is peeled off.

In this way, the central portion of the covering material 14 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 18 so that adjacent cuts 34 partially overlap when viewed in the direction in which the covering material 14 is peeled off. Even in this case, the center portion of the covering material 14 can be easily peeled off.

[Brief explanation of drawings]

FIG. 1 is a perspective view showing a mail item according to an embodiment of the present invention, and FIG. 2 is a partial sectional view taken along line 2 in FIG. FIG. 3 is a partial sectional view showing a state in which the covering material is peeled off from the mount. FIG. 4 is a perspective view showing another embodiment of the invention. FIG. 5 is a sectional view of a main part showing still another embodiment of the present invention, and FIG. 6 is a sectional view of a main part showing a state in which the covering material is peeled off from the mount in the embodiment shown in FIG. be. FIG. 7 is a sectional view of a main part showing another embodiment of the present invention, and FIG. 8 is a sectional view of a main part showing a state in which the covering material is peeled off from the mount in the embodiment shown in FIG. 7. . FIG. 9 is a perspective view showing still another embodiment of the invention. FIG. 10 is a plan view of a main part showing yet 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 partial sectional view of a conventional mail item of this type. In the figure, 10 is a mail item, 12 is a mount, 14 is a covering material, 18 is a base material, 24 is a release agent layer, 26 is an adhesive force adjustment layer,
28 indicates a thermoadhesive resin layer. 121 Figure ■-7 ■7 Figure 1゜ Figure Figure Figure Section CN Sister Ward Law No. 10 Figure 6a 6b No. 11

Claims (1)

[Scope of Claims] A mount, and a covering material formed integrally with the mount, folded back and affixed to the mount, and covering at least a portion of the mount, the covering material being at least a surface of the base material. A release agent layer is formed on a part of the coating material, an adhesive force adjustment layer is formed on the main surface of the release agent layer, a thermally adhesive resin layer is formed on the main surface of the adhesive force adjustment layer, and the coating material is , a postal item in which the heat-adhesive resin layer is melted and adhered to the mount.