JPH04325292A - Postcard - Google Patents

Abstract

PURPOSE:To suitably perform the temporary concealing of postcard pasteboard and to present the curling of the postcard pasteboard due to the bonding of a cover material by forming the cover material bonded to a part of the surface of the postcard pasteboard from a sheet base material and a plurality of thermal adhesive resin layers having different bonding forces. CONSTITUTION:The principal part of a postcard 10 is formed from postcard pasteboard 12 formed in a size of a government postcard and the cover material 14 bonded to the secret items entered in a part of the postcard pasteboard. A sheetlike base material 16 composed of paper or a synthetic resin film and capable of being cut by scissors is provided to the cover material 14. A concealing layer 18 is arranged to one surface of the base material 16 and formed, for example, by applying solid silver printing to the base material 16. For example, a thermal adhesive resin having delayed tackiness and relatively weak bonding strength is applied to the surface of the concealing layer 18 to arrange a thermal adhesive resin layer 20. Further, a thermal adhesive resin layer 22 having relatively high bonding strength is arranged to the surface of the thermal adhesive resin layer 20.

Description

[Detailed description of the invention]

0001

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to postcards, and more particularly to postcards that can temporarily hide secret information formed on the surface of a postcard mount.

0002

22 is a perspective view of a conventional postcard, and FIG. 23 is a sectional view taken along line XXIII--XXIII in FIG. 22. This postcard 1 includes a postcard mount 2 formed to the size of an official postcard, and a covering material 3 attached to a part of the postcard mount 2. The covering material 3 is a sheet-like base material 4
including. A concealing layer 5 is formed on the main surface of the base material 4. A laminate layer 6 made of polyethylene is formed on the surface of this hiding layer 5. Furthermore, an adhesive layer 7 made of a pressure-sensitive adhesive is formed on the surface of the laminate layer 6. The covering material 3 is adhered to a portion of the postcard mount 2 by an adhesive layer 7.

0003

[Problems to be Solved by the Invention] Although such conventional postcards can hide the surface of the postcard mount, mistakes may occur in pasting the covering material onto the postcard mount.

[0004] In order to solve this problem, a postcard using a thermoadhesive resin as an adhesive has been developed. In such postcards, after confirming the positions of the covering material and the postcard mount, the heat-adhesive resin layer is melted and the covering material is adhered to the postcard mount. Therefore, when pasting the covering material onto the postcard mount, pasting errors are less likely to occur.

However, in such postcards, when the covering material is attached to the postcard mount, when the heat-adhesive resin layer is heated, the postcard mount is also heated, and the postcard mount may curl. .

[0006] Furthermore, a laminate formed in such a way that a part of it, for example, the part inside the frame, can be peeled off,
Dry glue is applied over the entire surface of the paper to form an adhesive surface, and the other base material is subjected to a release process such as silicone processing so that only the area within the frame can be removed. There is a need to allow one laminate of a laminate structure to be partially peeled off by treatment. Therefore, when manufacturing them, one laminate requires a dry glue application process, and the other laminate requires a peeling process such as silicon processing.
Inevitably, the structure of the laminate becomes more complicated, and the number of manufacturing steps increases, leading to an increase in manufacturing costs.

[0007] Therefore, the main object of the present invention is to be able to suitably and temporarily hide the surface of a postcard mount without subjecting the surface of the postcard mount to peeling treatment or the like;
Moreover, it is an object of the present invention to provide a postcard in which the postcard mount is less likely to curl when the covering material is attached, even if a thermoadhesive resin is used as the adhesive.

[0008]

[Means for Solving the Problems] The present invention is a postcard including a postcard mount and an adhesive material affixed to at least a part of the surface of the postcard mount, the adhesive material being a sheet base material. , a first heat-adhesive resin layer formed on the main surface of the sheet base material, made of a delayed-tack heat-adhesive resin and having weak adhesive strength, and a part of the surface of the first heat-adhesive resin layer. It is made of a delayed tack thermoadhesive resin.
a second heat-adhesive resin layer having strong adhesive strength, the adhesive material being stuck to the surface of the postcard mount by the first heat-adhesive resin layer and the second heat-adhesive resin layer; It's a postcard.

[0009]

[Operation] Since the heat-adhesive resin layer is formed of a delayed-tack heat-adhesive resin, it can be attached to the postcard mount after the covering material has been heated.

Furthermore, the first thermoadhesive resin layer is weakly adhered to the postcard mount, and the second thermoadhesive resin layer is strongly adhered to the postcard mount. Therefore, the sheet base material will not be inadvertently peeled off from the postcard mount due to the force applied to the portion where the second thermoadhesive resin layer is formed. Further, in this state, the surface of the postcard mount is hidden by the hiding layer.

[0011] Then, if the sheet base material or the like is cut and peeled off at the part where the second heat-adhesive resin layer is not formed,
The hiding layer and the first thermoadhesive resin layer are peeled off from the postcard mount along with the sheet base material. Therefore, the surface of the postcard mount is visible.

0012

According to the present invention, the surface of a postcard mount can be suitably and temporarily hidden without subjecting the surface of the postcard mount to any processing such as peeling treatment. Furthermore, even if a heat-adhesive resin is used as an adhesive for postcards, the postcard mount is unlikely to curl when the covering material is attached.

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.

[0014]

DESCRIPTION OF THE PREFERRED EMBODIMENTS FIG. 1 is a perspective view showing an embodiment of the present invention, and FIG. 2 is a sectional view taken along line II--II in FIG.

This postcard 10 includes a postcard mount 12 formed to the size of an official postcard, and a covering material 14 attached to a portion of the postcard mount 12.

Next, the covering material 14 that is pasted on the surface of the postcard mount 12, particularly in areas where confidential matters such as financial and insurance information are written, will be explained mainly based on FIG. do.

[0017] This covering material 14 includes a sheet-like base material 16. The base material 16 is made of a relatively flexible material such as paper or synthetic resin film that can be cut with scissors or the like.

A concealing layer 18 is also formed on one main surface of the base material 16. The concealing layer 18 is formed by solid silver printing using silver ink, for example, and
Alternatively, it may be formed by laminating film materials with hiding power such as aluminum foil with an adhesive or the like.

The surface of this hiding layer 18 is coated with a thermoadhesive resin having delayed tack properties and weak adhesive strength.
The first thermoadhesive resin layer 20 is formed by extrusion coating while heating, or by dissolving it in a solvent or dispersing it in water, and performing printing such as gravure or silk screen.

[0020] This first thermoadhesive resin layer 20 is formed so that it can be melted at a temperature of, for example, 100°C to 200°C, and can be adhered to a postcard mount 12 made of, for example, paper.

[0021] The thermoadhesive resin has delayed tack properties and basically consists of a polymer and a solid plasticizer,
It preferably contains a tackifier, and may further contain an anti-aging agent and other additives.

Examples of polymers include polyvinyl acetate, polybutyl methacrylate, vinyl chloride-vinylidene chloride copolymer, synthetic rubber, vinyl acetate-2-ethylhexyl allylate copolymer, vinyl acetate-ethylene copolymer, vinylpyrrolidone-styrene copolymer. , styrene-butadiene copolymer, vinylpyrrolidone-ethyl acrylate copolymer, etc. can be selected.

Solid plasticizers include crystallized plasticizers and amorphous plasticizers. Crystallized solid plasticizers do not have tackiness. On the other hand, amorphous solid plasticizers have adhesive properties.

Such solid plasticizers include dicyclohexyl ortho-phthalate, diphenyl ortho-phthalate, dihexyl ortho-phthalate, dihydroabiethyl ortho-phthalate, dimethyl isophthalate, sterulose benzoate, ethylene glycol dibenzoate, Trimethylolethane tribenzoate, glyceride tribenzoate, pentaerythritol tetrabenzoate, sterulose octaacetate, tricyclohexyl citrate, N-cyclohexyl-p-toluenesulfonamide, dehydroabiethylamine carbonate, methoxyethyl-urea stearate There are complexes, etc.

[0025] Examples of the tackifier include indene resin, ethyl cellulose, petroleum resin (hydrocarbon resin), terpene resin, and rosin derivatives (polymerized rosin, hydrogenated rosin, pentaerythritol ester of rosin, and resin acid dimer).

Furthermore, a second thermoadhesive resin layer 22 having strong adhesive strength is formed on the surface of the first thermoadhesive resin layer 20. In this embodiment, the second thermoadhesive resin layer 22 is formed with a constant width on both sides of the postcard mount 12 in the longitudinal direction, that is, on both the upper and lower ends of the covering material 14. Further, the second thermoadhesive resin layer 22 is formed in a spot shape on both sides of the postcard mount 12 in the width direction, that is, on both left and right ends of the covering material 14. This second heat-adhesive resin layer 22 is formed by partially applying a heat-adhesive resin having strong adhesive strength to the surface of the first heat-adhesive resin layer 20 . In this case, the thermoadhesive resin material with strong adhesive strength may contain more tackifier or no release agent than the thermoadhesive resin material with weak adhesive strength. . In addition,
The second thermoadhesive resin layer 22 overlaps the first thermoadhesive resin layer 2 only at both upper and lower ends or at both left and right ends of the covering material 14.
It may be formed on the surface of 0. In this case, the second thermoadhesive resin layer 22 may be formed with a constant width or may be formed in a spot shape.

As shown in FIGS. 3 and 4, the dressing 14
The base material 16, the hiding layer 18, and the first thermoadhesive resin layer 20 are cut and relatively easily peeled off from the postcard mount 12 in the portion where the second thermoadhesive resin layer 22 is not formed. be able to. The surface of the postcard mount 12 can then be seen.

In the postcard of the present invention, the first heat-adhesive resin layer 20 and the second heat-adhesive resin layer 22 are formed of a delayed tack adhesive and have adhesive properties as an adhesive. Delayed tack adhesive is a type of hot melt adhesive and has a long open time. Therefore, after heating the coating material 14, the postcard mount 12
It can be attached to.

FIG. 5 shows a postcard mount 1 of such a covering material 14.
FIG. First, the covering material 14 is held on the holding reel 24. The dressing 14 is unwound at one end and fed into the dryer 26. The coating material 14 is then heated in the dryer 26. Dressing material 14 is then cut at the location of arrow A and further suctioned into vacuum device 28 . Further, the covering material 14 is adhered to the postcard mount 12 between the vacuum device 28 and the pressure roller 30.

[0030] In this way, since the covering material 14 is attached to the postcard mount 12 after being heated, the postcard mount 12 is not exposed to heat and the postcard mount 12 is less likely to curl.

FIGS. 6 and 7 respectively show another embodiment of the invention, of which FIG. 6 is a perspective view and FIG. 7 is a sectional view taken along line VII--VII of FIG. In this embodiment, in particular, the upper and lower ends of the base material 16, the hiding layer 18, and the first thermoadhesive resin layer 20 are provided with a second heat-adhesive layer in the portions where the second thermoadhesive resin layer 22 is not formed. Cutting cuts 32a and 32b, such as perforations, are formed along the edge of the adhesive resin layer 22. These cuts 32a, 32b are formed, for example, by a score forming device including a roll with incisors, so-called a die roll, or a die cutter with incisors.

Therefore, in this embodiment, as shown in FIGS. 8 and 9, the base material 16, the hiding layer 18 and the first thermal adhesive resin layer 22 are The adhesive resin layer 20 can be peeled off from the postcard mount 12 relatively easily by cutting it at the cuts 32a and 32b. The surface of the postcard mount 12 can then be seen.

FIGS. 10 and 11 show still another embodiment of the present invention, with FIG. 10 being a perspective view thereof and FIG. 11 being a sectional view taken along line XI-XI in FIG. 10. In this embodiment, another cut 32c is formed in the base material 16, the hiding layer 18, and the first thermoadhesive resin layer 20, particularly slightly inside the cut 32b. This cut 32c is formed together with the cuts 32a and 32b by, for example, a die roll. Further, between the cuts 32b and 32c, a notch 28 having a planar semicircular shape, for example, is formed at one end of the base material 16, the hiding layer 18, and the first heat-adhesive resin layer 20.

Therefore, in this embodiment, the covering material 14
When peeling off the vertical center part of the
As shown in FIG. 2, first, the base material 16, the hiding layer 18, and the first heat-adhesive resin layer 20 are peeled off at the narrow portion between the cuts 32b and 32c. In this case, if you put your finger on the notch 34, the thin width part between the notches 32b and 32c will touch the base material 1.
6. The hiding layer 18 and the first thermoadhesive resin layer 20 can be easily peeled off. Then, the surface of the postcard mount 12 can be seen by bending or cutting the vertical center portion of the covering material 14 along the cut 32a.

In the embodiment shown in FIGS. 10 and 11, instead of forming the notch 34, a protruding piece extending outward may be formed between the cuts 32b and 32c. In this way, by pinching the protrusion, the narrow portion of the covering material 14 can be peeled off more easily.

FIGS. 14 and 15 show another embodiment of the invention, of which FIG. 14 is a perspective view and FIG. 15 is a sectional view taken along line XV-XV in FIG. 14. In this embodiment, in particular, the covering material 14 is integrally formed extending from one end of the postcard mount 12, and is folded back and affixed to the postcard mount 12.

In this embodiment as well, as shown in FIGS. 16 and 17, the base material 16, the hiding layer 18, and the first thermal adhesive resin layer 22 are not formed on the base material 16, the hiding layer 18, and the first thermal adhesive resin layer 22. The layer 20 can be cut and peeled off from the postcard mount 12 relatively easily. The surface of the postcard mount 12 can then be seen.

FIG. 18 is a sectional view showing still another embodiment of the present invention. In this embodiment, in particular, the other main surface of the base material 16 is coated with an anti-curl agent to form an anti-curl layer 36, and the surface of the hiding layer 18 is laminated with polyethylene or polypropylene using a T-die method. As a result, a laminate layer 38 is formed. The base material 16 is then dimensionally stabilized by a dimension stabilizer.

Examples of dimensional stabilizers include butadiene-
Latices such as styrene latex, butadiene-acrylonitrile latex, butadiene-methyl methacrylate latex, chloroprene latex, vinylidene chloride latex, acrylate latex, water-soluble thermosetting resins such as urea resin, melamine resin, phenol resin, PVA (polyvinyl alcohol), etc. Examples include solvent-based resins such as polyester resin, vinyl chloride resin, and shellac resin.

[0040] These are coated or impregnated singly or as a mixture of two or more, or together with a crosslinking agent, and the base material 1
Stabilize the dimensions of 6. Examples of crosslinking agents include epoxy resins, glyoxal, aminoaldehyde resins, zirconium carbonate salts, and the like.

FIG. 19 shows the laminate layer 3 using the T-die method.
FIG. 8 is an illustrative diagram showing a method of forming No. The laminate layer material 38a is thinned by the T-die 40 to form the laminate layer 38.

The anti-curl layer 36 is formed to prevent curling. That is, since the hiding layer 18, the laminate layer 38, the first thermoadhesive resin layer 20, and the second thermoadhesive resin layer 22 are formed, when paper is used as the base material 16, for example, the base material 16 Expansion and contraction of the surface on the hidden layer 18 side is prevented. Therefore, the hiding layer 1 of the base material 16
When the paper constituting the base material 16 absorbs and releases moisture from the surface opposite to the side 8, the paper expands and contracts, causing curling. Therefore, by eliminating or minimizing the change in the moisture content of the paper that constitutes the base material 16,
Formed to prevent curling. As the anti-curl agent, acrylic emulsion, vinylidene chloride resin, polyethylene emulsion, wax such as paraffin wax, microcrystalline wax, metal soap, etc. are used in the form of emulsion or in the form of heat melting. These alone or a mixture of two or more,
The anti-curl layer 36 is formed by coating or impregnation. Further, as the anti-curl layer 36, on the surface of the base material 16 on the opposite side to the concealing layer 18 side, like the laminate layer 38,
It may also be formed by laminating polyethylene.

Furthermore, if a non-stretchable material such as a resin film is used as the base material 16, shrinkage of the hiding layer 18, the first thermoadhesive resin layer 20, and the second thermoadhesive resin layer 22 may occur. As a result, curling occurs on the hiding layer 18 side of the base material 16. Therefore, as the anti-curl agent, water-soluble polymers such as polyvinyl alcohol, polyethylene oxide, and polyvinyl methyl ether, natural polymers such as starch and casein, latex, and aminoaldehyde resins are used. By coating these, an anti-curl layer 36 is formed, and the function of the anti-curl layer 36 offsets and prevents curling.

[0044] Furthermore, the base material 16 tends to allow heat to escape easily at the surface, and the surface tends to shrink easily. However, since the base material 16 of this embodiment is dimensionally stabilized by the dimensional stabilizer, its surface is less likely to shrink when the covering material 14 is manufactured and applied. Furthermore, on one main surface of the base material 16,
Anti-curl layer 36 coated with anti-curl agent
is formed, so the covering material 14 is less likely to curl during its manufacture and application.

In each of the above embodiments, the covering material 1
For example, the second heat-adhesive resin layer 22 can be removed from the covering material 14 in a vertically central portion thereof.
A second thermally adhesive resin layer 2 is formed on the surrounding area of the
A cut is formed in the base material 16, the concealing layer 18, and the first thermoadhesive resin layer 20 along the edges of the cover material 14, and the central portion of the covering material 14 is cut at the cut and can be peeled off from the postcard mount 12. It may be configured as follows.

In this case, as shown in FIG.
One cut 32 is cut into a straight cut portion 42a so that a portion of adjacent cuts 32 overlap when viewed in the direction in which 4 is to be peeled off.
and the arc-shaped cut portion 42b, the covering material 14
The center part can be easily peeled off. In order to be able to easily peel off the central portion of the covering material 14 in this way, for example, as shown in FIG. The linear cuts 32 may be formed diagonally around the base material 16 so that they partially overlap.

[Brief explanation of the drawing]

FIG. 1 is a perspective view showing an embodiment of the present invention.

FIG. 2 is a sectional view taken along line II-II in FIG. 1;

FIG. 3 is a perspective view showing a state in which the covering material is peeled off from the postcard mount.

FIG. 4 is a sectional view taken along line IV-IV in FIG. 3;

FIG. 5 is an illustrative view showing an example of a method for attaching a covering material to a postcard mount.

FIG. 6 is a perspective view showing another embodiment of the invention.

FIG. 7 is a sectional view taken along line VII-VII in FIG. 6;

FIG. 8 is a perspective view showing the postcard shown in FIGS. 6 and 7 with the thin width portion of the base material removed.

FIG. 9 is a sectional view taken along line IX-IX in FIG. 8;

FIG. 10 is a perspective view showing still another embodiment of the invention.

11 is a sectional view taken along line XI-XI in FIG. 10. FIG.

FIG. 12 is a perspective view showing the postcard shown in FIGS. 10 and 11 with the thin width portion of the base material removed.

FIG. 13 is a sectional view taken along line XIII-XIII in FIG. 12;

FIG. 14 is a perspective view showing another embodiment of the invention.

15 is a sectional view taken along line XV-XV in FIG. 14. FIG.

FIG. 16 is a perspective view showing the postcard shown in FIGS. 14 and 15 with the covering material removed.

FIG. 17 is a sectional view taken along line XVII-XVII in FIG. 16;

FIG. 18 is a sectional view showing still another embodiment of the invention.

FIG. 19 is a perspective view showing a method of forming a laminate layer using a T-die method.

FIG. 20 is a surface view of a main part showing still another embodiment of the present invention.

FIG. 21 is a surface view of a main part showing a modification of the embodiment in FIG. 20;

FIG. 22 is a perspective view showing a conventional postcard.

FIG. 23 is a sectional view taken along line XXIII-XXIII in FIG. 22;

[Explanation of symbols]

10 Postcard 12 Postcard mount 14 Covering material 16 Base material 20 First thermal adhesive resin layer 22 Second thermal adhesive resin layer

Claims (1)

[Claims] 1. A postcard comprising a postcard mount and an adhesive material affixed to at least a part of the surface of the postcard mount, the adhesive material comprising a sheet base material, a main component of the sheet base material a first heat-adhesive resin layer formed on a surface of the first heat-adhesive resin layer, which is made of a delayed-tack heat-adhesive resin and has a weak adhesive force; The adhesive includes a second thermoadhesive resin layer made of a tacky thermoadhesive resin and has strong adhesive strength, and the adhesive material includes the first thermoadhesive resin layer and the second thermoadhesive resin layer. A postcard affixed to the surface of the postcard mount by.