JPH11277951A - Card holder - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a card holder suitably holding various kinds of cards including an IC card and having effective protection means for the card against external impact and pressure. A card holding unit 3 is provided which is configured to overlap separate sheets or fold one sheet and hold a predetermined card with the overlapped surface.
A card holder comprising at least one of the superposed surfaces, provided with a card protecting means 5 made of a mixture of a heat-expandable material and a thermoplastic resin binder and expanded by heating. One.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a card holder which is enclosed in an envelope or the like while holding a card and is used for mailing or delivery.

[0002]

2. Description of the Related Art Conventionally, "card holders" which are enclosed in an envelope or the like while holding a card in a card holder and used for mailing or delivery are often found in the field of business forms. There are several methods for holding the card.For example, a weak adhesive layer is applied to the card holding part provided on the sheet surface to temporarily adhere the card, or a cut is made in the sheet, and the four corners of the card are sandwiched in this part And so on. Such a method was mainly effective for a card having no data recording portion, and especially for a magnetic card having a recording portion.

[0003]

Recently, in various fields, I
Although the C card is becoming widespread, the mechanism of the IC chip built in the IC card is complicated, and there is a limit in impact resistance, pressure resistance and the like. However, since the card holder as described above has no means for protecting the card against external impact, pressurization, and the like, a problem arises in handling and the card holder is not suitable for use in an IC card.

Accordingly, an object of the present invention is to provide a card holder suitably holding various cards such as an IC card, and having effective protection means for the card against external impact and pressure. Things.

[0005]

In view of the above problem, the present inventor has sandwiched a card on an overlapping surface, applied a mixture of a thermally expandable material and a thermoplastic resin binder to the overlapping surface, It has been found that, by heating and expanding the card, the structure serves as an effective protection means for the card, and the card holder of the present invention has been conceived.

That is, the card holding body of the present invention has a card holding portion in which separate sheets are overlapped or one sheet is folded, and a predetermined card is sandwiched between the overlapping surfaces. At least one of the superposed surfaces is made of a mixture of a heat-expandable material and a thermoplastic resin binder, and is provided with protection means for a card which is expanded by heating.

In the card holder having such a configuration, the mixture of the heat-expandable material and the thermoplastic resin binder applied to the overlapping surface is in a state of being expanded by heating and has a suitable elasticity, so that the impact resistance, It has excellent pressure resistance, and can effectively protect the card from external impact and pressure.

[0008]

Next, the card holder of the present invention will be described in more detail with reference to an embodiment and the accompanying drawings.
Here, FIG. 1 is a front perspective view of the card holder of the present invention, FIG. 2 is a sectional view taken along line XX of FIG. 1, FIG. 3 is a sectional view taken along line YY of FIG. 1, and FIG. FIG. 5 is a sectional view taken along line XX of FIG. 3 and FIG. 6 is a sectional view taken along line YY of FIG. 3.

The card holder 1 of the embodiment shown in FIG. 1 is configured as a "card sending board", and a card holder 3 is provided on a predetermined portion of a sheet substrate 2 on which predetermined printing and printing information P has been applied.
The card holding unit 3 is formed by laminating a separate sheet piece 4 on a base sheet 2 and detachably bonding with a weak adhesive 6.

As shown in FIG. 2 and FIG. 3, the superposed surface of the base sheet 2 and the sheet piece 4 is provided with a heat-expandable material and a thermoplastic resin binder which are expanded by heating. Means for protecting card made of mixture 5
, And a predetermined card C is held. further,
In the case of the present embodiment, in order to securely hold the card C, the protection means 5 is formed with a concave portion corresponding to the size of the card C, and is connected to the card C. The recess may be formed by a high-pressure press after the expansion of the heat-expandable material, or may be formed such that when the heat-expandable material is expanded, the heating temperature is different from that of the recess. The present invention is not limited to this, and the recess is not necessarily required as long as the card can be held only by pressing the overlapping surface.

Another embodiment of the card holder of the present invention shown in FIG. 4 is a card holder 1 configured as a "card sending board" as in the above-described embodiment. As in the example, the card holder 3 is attached to the base sheet 2
Instead of laminating the separate sheet pieces 4 on each other, a predetermined portion of the base sheet 2 is folded, and as shown in FIGS. A protection means 5 for a card made of a mixture is applied to hold a predetermined card C.

In the present invention, the card protection means is preferably provided on both sides of the superposed surface. For example, usually, in the case of an IC card, since the IC chip is provided on one side of the card, the side in contact with the surface is usually provided. May be provided only on the superimposed surface.

The heat-expandable material in the present invention is a micro-spherical material having a property that the volume expands 10 to 150 times by heating. For example, a thermoplastic resin is used as a wall material to encapsulate a low-boiling substance. Heat-sensitive foaming agent,
Conventionally, it can be arbitrarily selected from those that have been used for thermal expansion inks for Braille printing. That is, the thermally expandable material referred to herein includes methyl chloride, methyl bromide, dichloroethane, trichloroethane, n-butane, n-propane,
Using a low-boiling substance such as n-hexane or petroleum ether as a core substance, and a polymer or copolymer such as vinylidene chloride, vinyl chloride, acrylonitrile, or methacrylic acid ester, for example, a vinyl chloride-vinylidene chloride copolymer or vinylidene chloride- Acrylonitrile copolymer, vinylidene chloride
Microcapsules having a particle diameter of about 1 to 50 μm and a thermoplastic resin such as an acrylate copolymer as a wall material, and azobisisobutyronitrile, azodicarbonamide, hydrazolcarbonamide, dinitrosopentamethylenetetramine, etc. Organic foaming agents, and inorganic foaming agents such as ammonium carbonate, ammonium bicarbonate, and sodium bicarbonate are exemplified.

[0014] The thermoplastic resin binder referred to herein is a vinyl acetate resin, an acrylic resin, a methacrylic resin, a polyester resin, a polystyrene resin, or the like.
Polyamide-based resin, acrylonitrile-based resin, styrene-butadiene-based resin or natural rubber, synthetic rubber, unvulcanized rubber, rubber-based resin such as vulcanized rubber, and the like, preferably, polyester-based, acrylonitrile-based, rubber-based Things.

The mixing ratio of the heat-expandable material to the thermoplastic resin binder is suitably about 1: 4 to 1: 1 by weight, preferably 1: 3, more preferably 2: 3.
Before and after, depending on the expansion coefficient and the degree of fixation to the sheet surface of the adopted thermal expandable material and thermoplastic resin binder,
It is appropriately selected.

[0016]

As described above, according to the card holder of the present invention, the mixture of the heat-expandable material and the thermoplastic resin binder applied to the superposed surface is in a state of being expanded by heating, which is preferable. With excellent elasticity, it has excellent impact resistance and pressure resistance, and effectively protects the card from external impact and pressure.

[Brief description of the drawings]

FIG. 1 is a front perspective view of a card holder of the present invention.

FIG. 2 is a sectional view taken along line XX of FIG.

FIG. 3 is a sectional view taken along line YY of FIG. 1;

FIG. 4 is a front perspective view of a card holder of the present invention in another embodiment.

FIG. 5 is a sectional view taken along line XX of FIG. 3;

FIG. 6 is a sectional view taken along line YY of FIG. 1;

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Card holder 2 Base material sheet 3 Card holding part 4 Sheet piece 5 Card protection means 6 Weak adhesive

Claims (1)

[Claims] 1. A card holding portion for stacking separate sheets or folding one sheet and holding a predetermined card with the overlapping surface, wherein at least one of the overlapping surfaces is provided. A card holder comprising a mixture of a heat-expandable material and a thermoplastic resin binder on a surface thereof, and a protection means for a card which is expanded by heating.