JPH07329083A - Method imparting embossed pattern to sheet - Google Patents

Abstract

PURPOSE:To provide a method of imparting embossed pattern in a state of drawing processing to a various sheets easily at a favorable reproducibility. CONSTITUTION:A sheet is laminated on the surface of a platelike base in an extended state through an adhesive agent layer provided intermittently, then a laminated matter is shrinked and after embossing is made to generate on the surface which does not come into contact with an adhesive agent layer of the sheet, the base is peeled off. A themoshrinkable base or an elastic base can be used as the base.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for imparting a drawn grain pattern to various sheets.

[0002]

2. Description of the Related Art There are embossing and tie-dyeing methods for imparting a fine grain pattern to a cloth or the like, but the former method cannot give good quality processing to a thin material and the latter method. However, the above method has a drawback that it is very troublesome and expensive.

[0003]

SUMMARY OF THE INVENTION It is an object of the present invention to provide a method for imparting a drawing-like grain pattern to various sheets easily and with good reproducibility.

[0004]

DISCLOSURE OF THE INVENTION The present invention utilizes the stretching and contracting properties of a flat substrate, and a sheet is formed on the surface of the substrate in a stretched state with an adhesive layer intermittently provided. The above object was achieved by laminating and then shrinking the laminate to form creases on the surface of the sheet not in contact with the adhesive layer, and then peeling off the base material.

As the above-mentioned base material, a heat-shrinkable base material or an elastic base material can be used. For example, when a heat-shrinkable base material is used, an adhesive provided intermittently on the surface of the base material. A sheet is laminated via an agent layer, and the laminate is heated at a temperature at which the base material shrinks but the sheet does not substantially shrink in a substantially tension-free state to shrink the base material. After that, it is cooled and the base material is peeled off.

As the heat-shrinkable substrate, a plastic film (or plate) or cloth can be used. For example, a uniaxially stretched or biaxially stretched plastic film is used as the heat-shrinkable film. However, they are stretch-fixed between the glass transition point and the melting point and reheat-shrinkable. Also, sheets that can be contracted by releasing heat from the stretched state by heat setting in the stretched state and heating in the non-tensioned state can be used.

The degree of stretching of the plastic film is not particularly limited, but is 120 to 250%, particularly 150 to 220.
% Is preferable. Further, preferable plastic films include polyethylene, polypropylene,
Examples thereof include polystyrene, polyester, polyacrylic acid ester, polymethylmethacrylic acid ester, polyacrylonitrile, polyamide, polyvinyl chloride and the like. Further, as the cloth, it is preferable to use a knitted cloth made of synthetic fiber such as polyamide fiber, polyester fiber, and acrylic fiber.

In the present invention, an elastic base material may be used as the base material, but in this case, the base material is stretched in at least one direction and is intermittently applied to the surface of the base material. After laminating the sheets with the adhesive layer provided, it is preferable to release the base material after releasing the expansion and contraction of the base material.

As the elastic substrate, an elastic sheet having rubber elasticity such as polyurethane, butadiene rubber, isoprene or neoprene rubber, vulcanized rubber, or a cloth made of elastic yarn can be used.

Next, as the processed sheet adhered to the above-mentioned base material, cloths such as woven fabric, knitted fabric and non-woven fabric, paper,
Any of natural or synthetic leather, a plastic film, or a processed product thereof can be used, but a thin woven fabric such as Georgette or Lawn is preferable. In addition,
Needless to say, it is important that the sheet to be processed does not substantially deteriorate due to heating during the subsequent heat shrinkage.

The stretched base material and the processed sheet are striped,
The adhesive is applied in an intermittent pattern such as a lattice shape, a corrugated shape, or a donut shape, and the printing of the adhesive may be applied to either the base material or the sheet to be processed.

The heat shrinkage of the laminate of the heat-shrinkable base material and the sheet to be processed adhered with an adhesive may be performed between the glass transition point and the melting point of the heat-shrinkable base material, but is generally 150 to 1.
It is preferable to perform heat treatment at a temperature of about 80 ° C. During this heat treatment, the laminate of the heat-shrinkable substrate and the sheet to be processed is kept substantially tension-free in the shrinking direction so that the heat-shrinkable substrate can freely heat-shrink. Is good.

When the elastic base material is stretched and used, it can be stretched and shrunk even at room temperature. However, when it is processed at room temperature, it is possible to stably fix the grain pattern generated on the processed sheet during shrinkage. In addition, after shrinkage, it is preferable to heat-set the laminate or process the resin. The temperature of heat setting varies depending on the type of elastic substrate and the type of sheet to be processed, but is usually about 120 to 180 ° C.

Next, the adhesive may be any one as long as it can be printed on a substrate, and any of a solvent type, a water dispersion type and an aqueous solution type may be used. It is preferable to use a water dispersion type such as an emulsion or an aqueous solution type of carboxymethyl cellulose, sodium alginate, polyacrylic acid or the like. When the latter aqueous solution type is used, the adhesive can be removed by washing with water after processing. Therefore, it is possible to obtain a product having a good texture without any adhesive.

According to the present invention, the base material is contracted and then peeled off from the sheet to be processed. In this case, the part to which the adhesive is applied in the sheet to be processed maintains the contracted shape together with the base material. However, the other portions are not shrunk and have the same area as before processing, so that the portion surrounded by the printing pattern of the adhesive swells and a finished product is obtained.

[0016]

【Example】

Example 1 A 0.2 mm thick biaxially stretched styrene resin plate (a plastic plate manufactured by Tamiya Model Co., Ltd., a transparent plastic band) was used with a printing pattern in which donut patterns with a diameter of 5 mm were lined up in an orderly manner. Permarin UA-300 (Urethane resin emulsion adhesive) is printed, and after the polyester georgette is adhered on it, it is dried and 1
After heat treatment at 70 ° C. for 45 seconds, the resin plate is shrunk to 41% in length and 42% in width with respect to the length in use, and after cooling,
The resin plate was peeled from the polyester georgette.
As a result, a product having a stretchable drawing-like pattern was obtained.

Example 2 A 0.2 mm thick biaxially stretched styrene resin plate (plastic plate manufactured by Tamiya Model Co., Ltd., transparent plastic) was used as a printing type in which donut patterns with a diameter of 5 mm were lined up in an orderly manner. Acrylic size 22HD (water-soluble sodium acrylate adhesive) manufactured by Sangyo Co., Ltd. is printed, and after the polyester georgette is stuck on it, it is dried and in a state where no tension is applied,
The resin plate was heat-treated at 170 ° C. for 45 seconds to shrink the resin plate to 41% in length and 42% in width with respect to the length in use, cooled, washed with water and dried, and then the resin plate was peeled from the polyester georgette. . As a result, a product having a stretchable drawing-like pattern was obtained. In addition, in this product,
It had a good feeling that no adhesive remained.

Example 3 Instead of the resin plate of Example 2, a nylon knitted fabric was 165 lengthwise.
%, 175% in width, and heat set at 160 ° C. for 1 minute, and the same method as in Example 2 was performed. The nylon knitted fabric shrinks to 100% in the length direction and 110% in the width direction when unstretched, and also in this example, it has a stretch-like drawing pattern with a good texture in the absence of an adhesive from Example 2. The product is obtained. The nylon knitted fabric could be used again by the same method.

Example 4 Example 3 was repeated except that the cloth to be treated (polyester georgette) was printed with the adhesive instead of the base material (nylon knit).
The same method was carried out. The same results as in Example 3 were obtained.

Example 5 Instead of the polyester georgette as the cloth to be treated,
A cotton loan is padded with a chemical composition for wash and wear processing with the following composition (squeeze ratio 128%),
Use the dried dough before heat treatment, Except that the treatment temperature during heat shrinkage was 170 ° C. for 2 minutes,
A method similar to that in Example 2 was performed. Also in this example, it was possible to obtain a stretch-like product having a good feeling and having no adhesive agent.

Example 6 Instead of the polyester georgette as the cloth to be treated,
The same method as in Example 1 was carried out except that muslin made of acrylic fiber (casimirone) was used. As in Example 1, a stretch-like drawn product was obtained.

Example 7 Instead of a biaxially stretched styrene resin plate, a 0.2 mm thick vinyl chloride film was heated to 160 ° C. and stretched by 200% in each of the longitudinal and transverse directions, cooled and fixed. The same method as in Example 1 was carried out except that was used. As in Example 1, a stretch-like drawn product was obtained. The vinyl chloride film was reusable.

Example 8 The same method as in Example 1 was carried out except that a polyvinyl chloride shrink film having a thickness of 0.025 mm manufactured by Nippon Carbide was used in place of the biaxially stretched styrene resin plate. . This shrink film shrinks to 43% in length and 42% in width during use by heat treatment, and
A stretch-like drawn product was obtained in the same manner as in.

Example 9 The same method as in Example 8 was carried out except that a polyester georgette was printed with the adhesive. A stretch-like product similar to that of Example 8 was obtained.

Example 10 A neoprene rubber sheet having a thickness of 1 mm was 110% in the longitudinal direction,
200% stretched in the lateral direction, and urethane resin dispersion adhesive (Implanyl DLP manufactured by Bayer) on the surface
Is printed in a striped pattern in which straight lines with a width of 0.5 mm are arranged at intervals of 5 mm, a non-woven fabric made by Japan Vilene Co. is laminated on it, the adhesive is dried, the tension of the rubber sheet is released, and the lamination is performed. The product was shrunk, then heat-treated at 180 ° C. for 1 minute, cooled, and then the rubber sheet was peeled off. As a result, a nonwoven fabric having a stretchable uneven pattern could be obtained. In addition,
The used rubber sheet returned to its original state and could be reused.

Example 11 A neoprene rubber sheet having a thickness of 1 mm was 110% in the longitudinal direction,
200% stretched in the lateral direction, and urethane resin dispersion adhesive (Implanyl DLP manufactured by Bayer) on the surface
Is printed in a striped pattern in which straight lines with a width of 0.5 mm are arranged at intervals of 5 mm, high quality paper (copy paper) is laminated on it, the adhesive is dried, and then an acrylic emulsion ( Nicazole FX-329) 3 made by Nippon Carbide Co., Ltd. 3
The 0% liquid was spray-coated, and then the tension of the rubber sheet was released before the emulsion was dried, the laminate was contracted, and after drying, the rubber sheet was peeled off. As a result, it was possible to obtain a paper sheet having a stable grain pattern. The rubber sheet used was returned to its original state and could be reused.

Example 12 The same method as in Example 3 was carried out except that a polyester film was used in place of the polyester georgette and the heat shrinkage treatment condition was 190 ° C. × 45 seconds. As a result, a transparent film having an elastic concavo-convex pattern could be obtained, and the nylon knitted fabric used as the heat-shrinkable substrate was reusable as in Example 3.

[0028]

According to the present invention, no special machine is required,
A sheet having a desired grain pattern with good reproducibility can be produced by simple printing and laminating methods. In addition, the film or the like used as the laminate substrate can be reused after stretching, heat setting, or stretching, and thus the method of the present invention is very economical.

─────────────────────────────────────────────────── ─── Continuation of the front page (51) Int.Cl. ⁶ Identification code Internal reference number FI technical display location B29C 61/02 7639-4F

Claims (6)

[Claims] 1. A sheet is laminated on the surface of a flat plate-shaped substrate in an expanded state with an adhesive layer provided intermittently, and then the laminate is contracted so as to be in contact with the adhesive layer of the sheet. A method for imparting a grain pattern to a sheet, which comprises peeling the base material after generating grain on the non-exposed surface. 2. A heat-shrinkable substrate is used as the substrate,
The laminate is contracted by heating at a temperature at which the base material contracts, but the sheet does not substantially contract, in a state where there is substantially no tension in the laminate, thereby causing a wrinkle in the sheet. The method of claim 1, wherein: 3. The method of claim 2 wherein the substrate is a mono- or biaxially stretched, heat-set plastic film. 4. The method of claim 2 wherein the substrate is a synthetic fiber knit, stretched in at least one direction and heat set. 5. The method according to claim 2, wherein the adhesive is a water-soluble adhesive. 6. The base material is elastic, and the sheets are laminated with an adhesive layer intermittently provided on the surface of the base material in a state where the base material is stretched in at least one direction. rear,
The method of claim 1, wherein the substrate is peeled off after the substrate is unstretched and contracted.