JP2001039063A - Pressure bonding recording sheet - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a pressure bonding recording sheet having a cloth-like peculiar drape, a sense of a high grade, good handleability and high concealability of information. SOLUTION: A cloth is used as a support. A density of the pressure bonding recording sheet is in a range of 0.15 to 0.75 g/cm3 or less. As the support, the cloth impregnated with a resin component is used. Further, a shielding layer and a pressure sensitive adhesive layer are sequentially laminated on at least one surface of the support. Thus, as compared with the case that a conventional sheet is used as the support, flexible drape is provided, and the recording sheet having a sense of a high grade can be provided.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a pressure-sensitive recording paper which has a unique cloth-like texture and a high-quality feel, has a high level of confidentiality of information, and is easy to handle. Here, the pressure-sensitive recording paper means that the support has a pressure-sensitive adhesive layer that does not show both adhesiveness and adhesiveness in a normal state and exhibits adhesiveness when pressed, and the pressure is applied in a state where the pressure-sensitive adhesive layers face each other. It is a recording sheet that can be peeled off after bonding and can be bonded to the point where it cannot be peeled off.

[0002]

2. Description of the Related Art In recent years, applications of two-fold and three-fold postcards using pressure-sensitive recording paper have been expanding. These pressure-sensitive recording papers are formed by applying a pressure-sensitive adhesive coating liquid that shows no adhesiveness and adhesiveness in a normal state and exhibits adhesiveness when pressed on a support to form a pressure-sensitive adhesive layer, and folds the paper. The pressure-sensitive adhesive layers are adhered by pressure in a state where the pressure-sensitive adhesive layers face each other, and the adhesion at the time of pressurization can be peelable after the adhesion, or can be adhered to the point where it cannot be peeled.
The confidential communication contents of the postcard (PIN, membership number, billing amount, balance of deposit, etc.) are recorded on the peelable pressure-sensitive adhesive surface. After pasting by pressure, the recipient can confirm the contents by peeling. .

[0003] Paper is generally used as a support for the pressure-sensitive recording paper, but a support other than paper is used for the purpose of enhancing appeal to the recipient and imparting a sense of quality. It is also considered to be used. For this purpose, it has been considered to use, for example, a woven fabric, a knitted fabric, a nonwoven fabric, or the like, which is characterized by the texture of the support itself. However, since such a fabric is more porous than paper or film, even if an attempt is made to provide a pressure-sensitive adhesive layer, the coating amount of the pressure-sensitive adhesive layer is increased, which is not only uneconomical, but also requires a large amount of coating. Because of this, the sheet becomes hard and loses the special texture of the precious fabric, the adhesive strength after crimping is poor due to the large amount of coating, the voids in the pressure-sensitive adhesive layer are large, and the smoothness is poor. There has been a problem that printability on the pressure-sensitive adhesive layer is poor.

[0004] Further, since the cloth is rich in elasticity, when the pressure-sensitive recording paper is produced using the cloth as a support, when the recording paper is opened, the sheet is stretched to deteriorate the appearance,
In some cases, a problem occurs in which the confidential communication content described on the pressure-sensitive adhesive layer cannot be read due to the distortion of the sheet.

Further, since the cloth has many voids and a low density as compared with paper or the like, a pressure-sensitive recording paper is prepared using the cloth as a support, and the pressure-sensitive adhesive layers are adhered by pressure while facing each other. If the confidential communication content recorded on the pressure-sensitive adhesive layer
There is a problem that the recording paper is seen through from the outside of the pressure-bonded recording paper. Countermeasures such as tint block printing have also been taken on the side opposite to the side on which the confidential communication content of the compression recording paper is recorded, and when the support is paper, etc., certain effects have been obtained. The effect is insufficient when a cloth is used.

[0006]

SUMMARY OF THE INVENTION It is an object of the present invention to provide a pressure-sensitive recording paper which has a unique cloth-like texture and a high-quality feel, and has high confidentiality of information.

[0007]

Means for Solving the Problems The present inventors have conducted intensive studies to solve the above problems, and as a result, have reached the following invention.

That is, in a pressure-sensitive recording paper having a pressure-sensitive adhesive layer provided on at least one surface of a support, the support is a fabric, and the density of the recording paper is 0.15.
This is an invention of a pressure-sensitive recording paper having a g / cm ³ or more and 0.75 g / cm ³ or less.

The present invention provides a pressure-sensitive recording paper in which the support is a cloth impregnated with a resin component.

The present invention provides a pressure-sensitive recording paper in which a shielding layer and a pressure-sensitive adhesive layer are sequentially laminated on at least one surface of a support.

[0011]

BEST MODE FOR CARRYING OUT THE INVENTION The pressure-sensitive recording paper according to the present invention will be described in detail. In the pressure-sensitive recording paper of the present invention, the support is a fabric, and the density of the recording paper is 0.15 g /
cm ³ or more and 0.75 g / cm ³ or less. By adopting such a configuration, it is possible to obtain a high-quality press-bonded recording sheet having a supple texture as compared with the case where conventional paper is used for the support. 0.15 density
The pressure-sensitive recording paper of less than g / cm ³ has a problem that the opacity of the recording sheet becomes insufficient irrespective of the contrivance, and the confidential communication content described in the pressure-sensitive adhesive layer can be seen through from the outside. Furthermore, since there is no strain on the pressure-sensitive recording paper, it is difficult to handle, and since the strength of the sheet is weak, the sheet is stretched at the time of opening to deteriorate the appearance, or the confidential communication content described on the pressure-sensitive adhesive layer becomes unreadable due to the distortion of the sheet Trouble is easy to occur. On the other hand, the density is 0.75 g /
If it exceeds cm ³ , the sheet becomes hard even if a fabric is used for the support, and it is difficult to obtain a texture and a high-grade feeling peculiar to the fabric.

The fabric used for the support of the present invention refers to a woven fabric, a knitted fabric, a nonwoven fabric or the like made of short fibers or continuous long fibers. As the fibers forming the fabric, polyethylene terephthalate, polybutylene terephthalate, or polyester-based fibers such as homopolymers and copolymers such as modified polymers of these polymers, polypropylene, polyethylene, polystyrene, and homopolymers such as modified polymers of these polymers; Organic synthetic fibers such as polyolefin-based fibers such as copolymers, polyacrylonitrile-based fibers such as acrylic fibers and modacrylic fibers, polyamide-based fibers such as nylon 6, nylon 66, etc., polyvinyl alcohol-based fibers, and urethane fibers; Regenerated fiber such as regenerated cellulose fiber such as rayon, fiber spun from collagen, alginic acid, chitin, etc .; semi-synthetic fiber such as acetate fiber;
Various fibers such as natural fibers such as cellulosic fibers such as hemp, cotton and pulp and protein fibers such as wool and silk; and inorganic fibers such as metal fibers, glass fibers and carbon fibers. Can be used alone or in combination.

The pressure-sensitive adhesive constituting the pressure-sensitive adhesive layer used in the present invention does not exhibit tackiness or adhesiveness in a normal state, but can be adhered by strong pressure, and can be applied to a label or an adhesive tape. This is different from the usual tacky pressure-sensitive adhesive used. The pressure-sensitive adhesive and the pressure-sensitive adhesive layer referred to in the present invention do not show tackiness or adhesiveness in the former normal state, but are limited to those which can be bonded by strong pressure. The pressure-sensitive adhesive recording paper of the present invention can be adhered by applying pressure to the pressure-sensitive adhesive layers, and peeling after adhesion by controlling the adhesiveness by blending the pressure-sensitive adhesive layers or controlling the applied pressure. It is possible to bond as much as possible, or to bond strongly so that it cannot be peeled off after bonding. In general three-fold postcards, the surface that adheres releasably to check the printed contents and the surface that adheres strongly so that the printed contents are not peeled off without using the printed contents are based on such a difference in pressure-sensitive adhesiveness. is there.

The pressure-sensitive adhesive used for the pressure-sensitive adhesive layer in the present invention is required to have a property of being self-adhesive and exhibiting no tackiness on the surface. As a base polymer of the adhesive, natural rubber or a modified product thereof (hereinafter, both are collectively referred to as (modified) natural rubber), (poly) isoprene rubber,
Synthetic rubbers such as butadiene rubber, styrene-butadiene rubber, acrylonitrile-butadiene rubber, ethylene-propylene rubber, butyl rubber, chloroprene rubber, acrylic rubber, chlorosulfonated polyethylene, chlorinated polyethylene, epichlorohydrin rubber, and ethylene-vinyl acetate copolymer resin , (Meth) acrylate resin, vinyl chloride resin, vinylidene chloride resin, or copolymer of synthetic rubber and (meth) acrylate, and (modified) natural rubber and (meth) acrylic acid A copolymerized copolymer such as an ester is used in the form of a solution or an emulsion.

In addition, the pressure-sensitive adhesive of the present invention comprises a rosin-based resin or a derivative thereof, a terpene-based resin, a coumaroindene-based resin, a xylene-based resin, an alkylphenol-based resin, a petroleum resin, etc., as a tackifier, and has adhesion and blocking resistance. Can be used together as long as the properties and heat resistance are not impaired. Further, silica, kaolin, clay, calcium carbonate, aluminum hydroxide, titanium oxide, zinc oxide, melamine resin particles, benzoguanamine resin particles, starch particles and the like can be used in combination for the purpose of controlling the adhesiveness. Also,
If necessary, a release agent, an antistatic agent, a thickener, a dispersant, a preservative, an antioxidant, an antioxidant, an ultraviolet inhibitor, an antifoaming agent, and the like can be added to the pressure-sensitive adhesive. further,
For the purpose of imparting inkjet recording suitability to the pressure-sensitive adhesive layer, a cationic compound having a quaternary ammonium group or a compound having a tertiary amino group may be added to the pressure-sensitive adhesive.

It is preferable to use a cloth impregnated with a resin component as the support of the present invention. This resin component has a sealing effect on the pressure-sensitive adhesive layer. When a cloth not impregnated with a resin component is used as a support, when a pressure-sensitive adhesive layer is provided on at least one surface of the cloth, when a post-metering coating method such as a blade coater is used, However, since the coating liquid permeability of the fabric is high, the coating amount of the pressure-sensitive adhesive layer is increased, and the produced pressure-sensitive recording paper is hardened, so that the texture unique to the fabric is easily lost. Further, since the amount of the pressure-sensitive adhesive applied is large, it is difficult for the recording paper to achieve the density in the above range. Also, when a pre-metering coating method such as a gravure coater is adopted,
Perhaps because the pressure-sensitive adhesive layer penetrates into the support and the amount of effective glue decreases, the adhesive force when the pressure-sensitive adhesive layers are adhered by pressure in a state where the pressure-sensitive adhesive layers face each other is difficult to appear. Also, although it was unexpected at first, by using the cloth impregnated with the resin component for the support, when the minimum required amount of the pressure-sensitive adhesive layer was coated by the pre-metering coating method, Because the stiffness of the pressure-bonded recording paper is increased and the tensile strength of the recording paper is further improved, the sheet is not inadvertently stretched when the recording paper is opened, and the handling of the recording paper is improved. I found out.

In the present invention, at least one resin component is used.
It is composed of more than one kind of binder resin. Examples of the binder resin include polyvinyl alcohol, vinyl acetate, oxidized starch, etherified starch, cellulose derivatives such as carboxymethyl cellulose and hydroxyethyl cellulose, casein, gelatin, soy protein, silyl-modified polyvinyl alcohol, and the like; butadiene copolymer, styrene- Conjugated diene-based copolymer latex such as butadiene copolymer, styrene-isoprene copolymer, styrene-acrylate copolymer, acrylonitrile-butadiene copolymer, etc .; polymer or copolymer of acrylate and methacrylate Acrylic polymer latex such as a polymer or copolymer of acrylic acid and methacrylic acid; ethylene polymer latex such as ethylene-vinyl chloride copolymer and ethylene-acrylate copolymer; acetic acid Nyl-ethylene copolymer, vinyl acetate-acrylate copolymer, vinyl acetate-vinyl chloride copolymer, vinyl acetate-ethylene-vinyl chloride copolymer, vinyl acetate-ethylene-acrylate copolymer, acetic acid Vinyl-based polymer latex such as vinyl-ethylene-styrene copolymer; or functional group-modified polymer latex of a functional group-containing monomer such as carboxyl group of these various polymers; Thermal curing of melamine resin, urea resin, etc. Aqueous adhesives such as synthetic resins; and synthetic resin adhesives such as polyurethane resins, unsaturated polyester resins, polyvinyl butyral, and alkyd resins. Among these, a binder having thermoplasticity is excellent in sealing effect and is preferably used.

In the resin component used in the present invention, as additives other than the above-mentioned thermoplastic resin, various kinds of pigments such as inorganic and organic, pigment dispersants, thickeners, flow improvers, pH adjusters, Foaming agents, defoamers, release agents, foaming agents, penetrants, ultraviolet absorbers, antioxidants, preservatives, anti-binders, waterproofing agents, wet paper strength enhancers, dry paper strength enhancers, etc. It can also be blended.

As a method for impregnating the support with the resin component, a coating apparatus such as a size press coater, a tab size press coater, and a dip coater can be used. The impregnation amount of the resin component is not particularly limited, but if it is too small, the effect of filling is difficult to obtain. Also, if too much,
Since the resin component is impregnated into the entire support, the sheet becomes hard, and the texture peculiar to the fabric tends to decrease. For example, it is preferably from 0.02 g / m ^{2 to} 40 g / m ² , and more preferably from 0.1 g / m ^{2 to} 20 g / m ² .

In addition, as a pretreatment for the support, for example,
Use of a known technique such as corona treatment or calendar treatment can be performed without any problem.

The shielding layer of the present invention can be used to make the confidential communication content described in the pressure-sensitive adhesive layer transparent from the outside even when the pressure-sensitive recording paper is prepared using a support having a low density and a large amount of voids such as a cloth. It is a layer whose purpose is to prevent it.
In order to achieve the above-mentioned object, JIS P
The opacity specified by 8138 is preferably at least 60%, more preferably at least 70%, particularly preferably at least 85%. By sequentially laminating a shielding layer and a pressure-sensitive adhesive layer on at least one surface of the support, even when a pressure-sensitive recording paper is produced using a support having a low density and a large number of voids such as a cloth, the pressure-sensitive adhesive layer The confidential communication content described in (1) above can be made into a pressure-sensitive recording paper that is excellent in texture and luxury and has high information confidentiality without causing the problem that the contents of confidential communication can be seen through from the outside. Further, the shielding layer also serves as a seal for the pressure-sensitive adhesive layer, and the adhesiveness when the pressure-sensitive adhesive layers are adhered by pressure in a state where the pressure-sensitive adhesive layers face each other is improved. Further, with such a configuration, the sheet is strengthened and the dimensional stability is improved, so that the handling of the recording paper is improved.

The shielding layer of the present invention comprises a pigment and a binder resin. One or more known white pigments can be used as the pigment. For example, light calcium carbonate,
Heavy calcium carbonate, kaolin, talc, calcium sulfate, barium sulfate, titanium dioxide, zinc oxide, zinc sulfide, zinc carbonate, satin white, aluminum silicate, diatomaceous earth, calcium silicate, magnesium silicate, synthetic amorphous silica, colloidal silica , Colloidal alumina,
White inorganic pigments such as pseudoboehmite, aluminum hydroxide, alumina, lithopone, zeolite, hydrohaloysite, magnesium carbonate, magnesium hydroxide, styrene plastic pigment, acrylic plastic pigment, polyethylene, microcapsules, urea resin, melamine resin, etc. And organic pigments. As the binder resin, at least one kind of the binder resins listed as the resin component can be used.

In the shielding layer used in the present invention, additives other than the pigment and the binder resin include a thickener, a fluidity improver, a pH adjuster, an antifoaming agent, a foam inhibitor, a release agent, and a foaming agent. Agent,
A penetrant, an ultraviolet absorber, an antioxidant, an antiseptic, an antibacterial agent, a waterproofing agent, a wet paper strength enhancer, a dry paper strength enhancer, and the like can be appropriately blended.

The method of coating the pressure-sensitive adhesive layer and the shielding layer on the support includes, for example, various blade coaters, roll coaters, air knife coaters, bar coaters, rod blade coaters, short dwell coaters, comma coaters, and die coaters. Coating devices such as a reverse roll coater, a kiss coater, a curtain coater, an extrusion coater, a gate roll coater, a gravure coater, and a microgravure coater can be used.

The coating amount of the pressure-sensitive adhesive layer varies depending on the bonding method, but is 1 g / m ^{2 for} the purpose of securing good adhesiveness.
It is preferable to be within the range of 100 g / m ² or more.
More preferably, it is 2 g / m ² or more and 50 g / m ² or less. If the coating amount of the pressure-sensitive adhesive layer is smaller than this range, the bonding is insufficient and the bonding is weak. When the pressure is larger than this range, not only does the running of the sheet occur when information is recorded on the pressure-sensitive adhesive layer or when the pressure-sensitive adhesive layers are bonded to each other with the pressure facing each other, but also the cost is reduced economically. It becomes a factor of up.

The coating amount of the shielding layer varies depending on the type of the fabric used as the support. However, in order to increase the opacity of the pressure-sensitive recording paper, it is preferably within a range from 0.1 g / m ^{2 to} 300 g / m ^2. And more preferably 1 g / m ²
It is 200 g / m ² or less. If the coating amount of the shielding layer is smaller than this range, the effect of increasing the opacity is difficult to be obtained, and if it is larger than this range, the effect is saturated and the cost is increased economically.

The pressure-sensitive recording paper of the present invention can be subjected to a calender treatment after providing a support with a shielding layer or a pressure-sensitive adhesive layer for the purpose of improving the surface properties.
Means of calendar processing include machine calendar, T
A calendar processing machine such as a G calendar, a super calendar, and a soft calendar can be used. The pressure at which the calendering process is performed and the number of times the calender passes are not limited, but are determined by the type and thickness of the support.

In the pressure-sensitive recording sheet of the present invention, a notch or a compression line may be formed at a portion corresponding to a fold to facilitate folding. Also, the obtained pressure-bonded recording paper can be folded and integrated with one recording paper,
It is also possible to integrate two recording papers by overlapping them. Furthermore, it is also possible to provide a pressure-sensitive adhesive layer on the back surface or both a shielding layer and a pressure-sensitive adhesive layer to obtain a double-sided pressure-sensitive recording paper. In such double-sided pressure recording paper,
Similarly, one recording sheet can be folded or integrated into two or three sheets, or two or more recording sheets can be overlapped and integrated. The pressure-bonding of the pressure-sensitive adhesive layer can be performed by pressure-treating the superposed pressure-sensitive adhesive layers.

If the above-mentioned double-sided pressure-sensitive recording paper is used, it is also possible to integrate the double-sided pressure-sensitive recording paper three times like a three-fold postcard. When producing a pressure-bonded postcard using pressure-bonded recording paper, two pressure-bonded recording papers are stacked and pressed together, or one re-peelable pressure-bonded recording paper is bent into a “V” shape and then pressed. A method of concealing the entire printed part to be concealed (folding and post-bonding postcard) or a method of concealing only part of the printed information by folding it into an "L" shape, bending one double-sided pressure-bonded recording paper into a "Z" shape Any method such as a method of crimping by pressing (a three-fold crimping postcard) may be used.

The pressure-sensitive recording paper of the present invention is characterized in that the support is a fabric and the density of the pressure-sensitive recording paper is 0.15 g / cm ³ or more and 0.75 g / cm ³ or less. By adopting such a configuration, it is possible to obtain a high-quality press-bonded recording sheet having a supple texture as compared with the case where conventional paper is used for the support. When a cloth impregnated with a resin component was used as the support, the stiffness and strength of the recording paper were improved without impairing the supple feel, the handleability was good, and the pressure-sensitive adhesive layers faced each other. The bonding strength when bonded by pressure in this state is also good. Further, when a shielding layer and a pressure-sensitive adhesive layer are sequentially laminated on at least one surface of the support, even when a pressure-sensitive recording paper is produced using a support having a low density and a large number of voids, such as a cloth, the pressure-sensitive recording paper can be used. The problem that the confidential communication content described on the pressure-sensitive adhesive layer can be seen through from the outside is solved, and the pressure-sensitive recording paper having high information confidentiality and excellent feeling and feeling of quality can be obtained.

[0031]

EXAMPLES The present invention will be described below with reference to examples of the present invention, but the present invention is not limited to these examples. In Examples and Comparative Examples, “parts” and “%”
Unless otherwise specified, dry parts and dry weight% are indicated.

Preparation of Pressure Sensitive Adhesive 60 parts of natural rubber emulsion, 50 parts of synthetic silica (Fine Seal X37B, manufactured by Tokuyama Soda), starch particles 5
And 0 parts to adjust the solid concentration to 30%.

Preparation of Shielding Layer Coating Calcium Carbonate (Tamapearl TP-12, manufactured by Okutama Industry Co., Ltd.)
3) 100 parts of styrene-butadiene latex (J
And 20 parts of JSR-0668 (manufactured by SR Corporation) to prepare a coating solution for a shielding layer having a solid content of 60%.

Example 1 Using a plain weave made of a polyester single yarn as a warp and a weft made of two polyester single yarns arranged in parallel as a support, adjustment of a pressure-sensitive adhesive on one surface of the support The coating liquid adjusted in the above was applied using a gravure coater which is a pre-metering coater so that the coating amount after drying was 8 g / m ^2, and dried to obtain a pressure-sensitive recording paper of the present invention. The density of this compression recording paper was 0.16 g / m ² , and the opacity specified by JIS P8138 was 58%.

Example 2 Using a plain weave made of a polyester single yarn as a warp and a weft made of two polyester single yarns arranged in parallel, a pressure-sensitive adhesive was adjusted on one surface of the support. The coating liquid adjusted in the above is applied using an air knife coater, which is a post-metering coater, so that the coating amount after drying is 20 g / m ² ,
After drying, the pressure-sensitive recording paper of the present invention was obtained. The density of the pressure-sensitive recording paper was 0.21 g / m ² , and the opacity specified by JIS P8138 was 66%.

Example 3 A vinyl acetate-ethylene-acrylate copolymer (Sumikaflex 910, manufactured by Sumitomo Chemical Co., Ltd.) was dried as a resin component on the plain fabric used in Example 1 using a size press coater. Impregnation was performed so that the impregnation amount became 3 g / m ² , followed by drying to prepare a support. The coating liquid adjusted by adjusting the pressure-sensitive adhesive is applied to one surface of the support using a gravure coater, which is a pre-metering coater, so that the coating amount after drying is 8 g / m ^2, and then dried. Thus, a pressure-sensitive recording sheet of the present invention was obtained. The density of the pressure-sensitive recording paper is 0.19 g /
m ² , opacity specified by JIS P8138 is 62
%Met.

Example 4 The plain woven fabric used in Example 1 was used as a support, and the coating liquid adjusted by adjusting the shielding layer on one surface of the support was dried with a comma coater at a coating amount of 50 g / m 2. Coating and drying were performed to give ² . Further, the coating liquid adjusted by adjusting the pressure-sensitive adhesive was applied to the surface of the shielding layer opposite to the support, using a pre-metering coater.
m ² , followed by drying to obtain a pressure-sensitive recording paper of the present invention. The density of this press-fit recording paper is 0.43 g / m ² ,
The opacity defined by IS P8138 was 88%.

Example 5 On one surface of the support impregnated with the resin component used in Example 2, the coating liquid adjusted by adjusting the shielding layer was dried with a comma coater to a coating amount of 50 g / m ² . Coated and dried to form Furthermore, the coating amount after drying the coating liquid adjusted by adjusting the pressure-sensitive adhesive on the surface opposite to the support of the shielding layer using a gravure coater, which is a pre-metering coater, is 8 g / m ^2. And then dried to obtain the pressure-sensitive recording paper of the present invention.
The density of the pressure-sensitive recording paper is 0.45 g / m ² , JIS P
The opacity defined by 8138 was 90%.

Example 6 In Example 3, the coating amount after drying of the shielding layer was 180 g.
A pressure-sensitive recording sheet of the present invention was obtained in the same manner as in Example 3 except that / m ² was used. The density of this compression recording paper is 0.73 g /
m ² , opacity defined by JIS P8138 is 95
%Met.

Comparative Example 1 A high-quality paper having a basis weight of 100 g / m ² was used as a support, and a coating solution prepared by adjusting a pressure-sensitive adhesive was coated on one surface of the support by a gravure which is a pre-metering coater. It was applied using a coater so that the coated amount after drying was 8 g / m ^2, and dried to obtain a pressure-sensitive recording paper. The density of this compression recording paper is 0.85 g
/ m ² , opacity specified by JIS P8138 is 90
%Met.

Comparative Example 2 A pressure-bonded recording paper was obtained in the same manner as in Example 1 except that a plain woven fabric in which a polyester single yarn was used as a warp and a weft was used as a support. The density of the pressure-sensitive recording paper is 0.13 g / m ² , JIS
The opacity defined by P8138 was 54%.

Comparative Example 3 In Example 3, the coating amount after drying of the shielding layer was 220 g.
Pressure-sensitive recording paper was obtained in the same manner as in Example 3 except that the pressure was changed to / m ² . The density of the compression recording paper is 0.78 g / m ² ,
The opacity defined by SP8138 was 96%.

<Test Method> 1) Sheet Flexibility The flexibility of the pressure-bonded recording papers produced in Examples and Comparative Examples was determined according to the following criteria. ：: It is flexible and has a unique cloth-like texture. ：: The sheet is slightly stiff, but still has a cloth-like unique feel. ×: The sheet is hard, and the cloth-like unique feel is completely lost. Alternatively, there is a problem with the appearance of the sheet.

2) Information confidentiality With respect to the pressure-sensitive recording papers produced in the examples and comparative examples,
The tint block printing was performed by offset printing on the surface of the support opposite to the pressure-sensitive adhesive layer. Further, information recording was performed on the pressure-sensitive adhesive layer by offset printing. After the information recording, the pressure-sensitive recording paper is cut into the size of two postcards (20 cm × 15 cm), and the pressure-sensitive adhesive layer is opposed to each other. SP4
01) to perform compression bonding. The pressurization was adjusted by a clearance scale, and a level 4 was used by folding in two. The information confidentiality of the folded pressure-sensitive recording paper thus obtained was determined based on the following criteria. A: Information recorded on the pressure-sensitive adhesive layer cannot be deciphered at all even when the pressure-sensitive recording paper is watermarked. ：: When the color of the ink recorded on the pressure-sensitive adhesive layer is slightly seen through the pressure-sensitive recording sheet, the recorded information cannot be deciphered. Δ: When the pressure-bonded recording sheet is seen through, the recorded information can be decoded depending on the color of the ink. However, it is possible to somehow maintain information confidentiality by selecting the color of the ink. ×: When recorded on the pressure-sensitive recording sheet, information recorded on the pressure-sensitive adhesive layer can be read regardless of the type of ink.

3) Crimping property before printing Regarding the pressure-sensitive recording paper prepared in Examples and Comparative Examples,
Postcard size (10cm x 15cm) with pressure sensitive adhesive layer inside
Then, the sheet was passed through a pressure-change sealer (SP401, manufactured by ADM Japan) to perform pressure bonding. Pressurization is adjusted with the clearance scale,
Level 4 was used in two folds. After crimping, cut into strips with a width of 25 mm, and use a Tensilon universal tensile tester to
The 80 degree peel strength was measured. If you do not want to peel off carelessly over time or during transportation, and want to peel off again,
10 to 200 gf as peel strength for good peeling
/ 25 mm, more preferably 20 to 100 gf /
25 mm. If it is lower than this, a trouble that peels off during mailing or the like is likely to occur, and if it is higher than that, troubles such as breakage of paper tend to occur.

4) Dimensional stability The pressure-sensitive recording papers produced in Examples and Comparative Examples were
Information recording was performed on the pressure-sensitive adhesive layer by offset printing.
After recording the information, postcard size (10 cm
(× 15 cm), and passed through a pressure-sealing sealer (SP401, manufactured by ADM Japan) to perform pressure bonding. The pressurization was adjusted by a clearance scale, and a level 4 was used by folding in two. After the pressing, the pressing surface of the pressing recording paper was vigorously peeled off. The dimensional stability was determined based on the following criteria based on the state of the peeled sheet. ◎: No dimensional change was observed in the peeled sheet. ：: Deformation due to elongation in dimensions was observed in the peeled sheet, but at a level of little concern. Δ: The peeled sheet is greatly deformed, but the information written on the pressure-sensitive adhesive layer can be sufficiently read. Or a part of the sheet is torn. ×: The peeled sheet is greatly deformed, and it is difficult to read the information written on the pressure-sensitive adhesive layer due to the deformation of the sheet. Alternatively, the sheet breaks and separates into two.

[0047]

[Table 1]

As shown in Table 1, a cloth was used as the support and the density of the pressure-sensitive recording paper was 0.15 g / m ³ or more and 0.75 g / m ³ or more.
By setting the range to g / m ³ or less, it is possible to obtain pressure-sensitive recording paper having a unique cloth-like texture and a high-quality feel. In particular, in Example 3, in which a cloth impregnated with a resin component was used as the support, in addition to the above-mentioned characteristics, the pressure-bonding property was improved, and the dimensional stability at the time of opening was preferable. Further, in Examples 4 to 6 in which the shielding layer and the pressure-sensitive adhesive layer were sequentially laminated on one surface of the support, the compression recording was excellent not only in the compression performance and the dimensional stability at the time of opening but also in the confidentiality of information. It can be used as paper.

On the other hand, as shown in Comparative Examples 1 and 3, when paper is used for the support or when the density of the pressure-sensitive recording paper exceeds 0.75 g / cm ³ even when the support is The unique texture of cannot be obtained. As shown in Comparative Example 2,
Even if the support is a cloth, the density of the pressure-sensitive recording paper is 0.1
If it is less than 5 g / cm ³ , although it has a unique cloth-like texture, the pressure-sensitive adhesive layer is poor in adhesive strength when pressed because it penetrates into the support, and peels off carelessly over time or during transportation. It will be easier. In addition, information confidentiality and dimensional stability are deteriorated.

[0050]

The pressure-sensitive recording paper of the present invention is characterized in that the support is a fabric and the density of the pressure-sensitive recording paper is 0.15 g / cm ³ or more and 0.75 g / cm ³ or less. By adopting such a configuration, it is possible to obtain a high-quality press-bonded recording sheet having a supple texture as compared with the case where conventional paper is used for the support. When a cloth impregnated with a resin component was used as the support, the stiffness and strength of the recording paper were improved without impairing the supple feel, the handleability was good, and the pressure-sensitive adhesive layers faced each other. The bonding strength when bonded by pressure in this state is also good.
Further, when a shielding layer and a pressure-sensitive adhesive layer are sequentially laminated on at least one surface of the support, even when a pressure-sensitive recording paper is produced using a support having a low density and a large number of voids, such as a cloth, the pressure-sensitive recording paper can be used. The problem that the confidential communication content described on the pressure-sensitive adhesive layer can be seen through from the outside is solved, and the pressure-sensitive recording paper having high information confidentiality and excellent feeling and feeling of quality can be obtained.

Claims (3)

[Claims] 1. A pressure-sensitive adhesive layer which can be peelably or non-peelably adhered to at least one surface of a support in a normal state without exhibiting both tackiness and adhesiveness and by applying pressure with the coated surfaces facing each other. (Hereinafter simply referred to as a pressure-sensitive adhesive layer), in a pressure-sensitive recording sheet provided with a support,
And the density of the recording paper is 0.15 g / cm ³ or more and 0.75
g / cm ³ or less. 2. The pressure-sensitive recording paper according to claim 1, wherein the support is a cloth impregnated with a resin component. 3. A shielding layer on at least one surface of the support,
3. The pressure-sensitive recording paper according to claim 1, wherein pressure-sensitive adhesive layers are sequentially laminated.