JPH09119074A - Composite sheet - Google Patents

Abstract

PROBLEM TO BE SOLVED: To prepare a composite sheet having good touch feeling and simultaneously satisfying friction melting properties and snag resistance by forming a discontinuous resin film on the surface of a fiber substrate. SOLUTION: This composite sheet is obtained by scorching a moclody knitted fabric of polyester-cotton blend composed of 70% polyester and 30% cotton, dyeing the knitted fabric with a disperse dye and a reactive dye and applying 1-20wt.% resin liquid of silicone-based resin, acrylic resin, etc., to the knitted fabric so that discontinuous resin film exists in an amount of 10-90% in a yarn constituting the surface of the knitted fabric.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention mainly relates to woven fabrics and knitted fabrics made of synthetic fibers due to impact friction during movement.
The dough melts and the holes are excellent in frictional melting, and the fibers or threads that make up the dough are caught,
The present invention relates to a composite sheet excellent in snag, which is a phenomenon of sticking out and pulling.

[0002]

2. Description of the Related Art Synthetic fibers made of a thermoplastic polymer such as nylon or polyester have advantages such as high fiber strength, chemical stability, dimensional stability, pleating retention, and wrinkle resistance. On the other hand, there is a problem that the frictional heat generated by strong friction causes melting and opening a hole. On the other hand, conventionally, as a fusion preventing method for a fiber product, a substance having a low melting point is attached to melt the fiber before the synthetic fiber to absorb the heat, and the heat is directly transferred to the fiber product. There has been proposed a processing method of imparting anti-fusing property by preventing the heat treatment, a method of applying resin processing to the cloth surface to reduce friction, and the like.

Specifically, silicone resins conventionally used as fiber smoothing agents, paraffin wax, isocyanuric acid derivative resins (Japanese Patent Publication No. 49-23).
No. 279), a fatty acid amide, a melamine resin (Japanese Patent Publication No. 57-37713), and a heat-resistant resin such as an acrylic resin are generally subjected to dipping-padding treatment. However, in general, when a treatment for improving frictional melting property is performed, smoothness is imparted to the fibers and yarns that form the fabric, and slippage occurs. Forming loops, or with these phenomena,
There is a problem that snags that cause things like pulling up occur.

[0004] In particular, when the anti-fusing process is performed with a silicone resin, the perforation phenomenon due to frictional melting can be considerably prevented, but since the fibers or yarns constituting the fabric are slipped, the anti-snagging property is greatly improved. It fell to a level that was not practical. Therefore, considering snag, it is practically impossible to process with a silicone-based resin having a high friction melting property, and it is difficult to obtain a woven fabric and a knitted fabric having both excellent friction melting property and excellent anti-snag property. It was

[0005]

SUMMARY OF THE INVENTION An object of the present invention is to provide a fabric which simultaneously satisfies both the excellent friction melting property and the excellent anti-snag property, and further has an excellent texture.

[0006]

The present invention has been made in view of the above-mentioned points, and the present inventors have conducted various processing methods using various cloths in order to achieve the above-mentioned object. As a result of repeated studies, a fabric capable of achieving the object of the present invention was found, and the present invention was completed. That is,
The present invention is a composite sheet in which a discontinuous film is formed on the surface of a fiber cloth, wherein the discontinuous film is formed on the fiber yarn constituting the surface of the fiber cloth in an amount of 10 to 90%. It is a composite sheet.

Hereinafter, the present invention will be described in more detail. In the present invention, the fiber base material means a woven fabric or a knitted fabric. The fiber material is a heat-meltable polyester-based, polyamide-based, polyolefin-based, acrylic fiber, or a mixture thereof, and is a mixed product with a non-heat-meltable material such as cotton or cellulose fiber. However, it is not particularly limited. The structure of the woven or knitted fabric used in the present invention is not particularly limited, and a known woven or knitted structure is used. For example, in the case of textiles, plain weave, diagonal print, satin, or
As the knitted fabric, weft knitted fabric such as double jersey and single jersey or circular knitted fabric, tricot, Russell and the like are used. In the composite sheet of the present invention, it is particularly preferable to use a knitted fabric as a fiber base material. For example, when a knitted fabric such as a school sales jersey that is worn during sports in a school or a room such as a gymnasium facility, the effect is great.

The resin for forming the discontinuous film used in the present invention is not particularly limited, and a polymer of any resin may be used, but preferably a polyurethane polymer,
The acrylic polymer and the silicone polymer are used alone or as a mixture of two or more kinds. Further, in order to impart the anti-fusing property to the friction only by the discontinuous coating of the resin, it is preferable to use a silicone polymer blended in an amount of 10 to 80% by weight based on the resin used. The use of silicone is more preferably 20 to 50% by weight.

When the amount of silicone used is less than 10% by weight, it is preferable to further carry out a friction-proofing treatment described later in order to satisfy the friction-proofing property. When it is used in an amount of more than 80% by weight, the anti-friction property is satisfactory, but the smoothness of the silicone tends to significantly reduce the snag, and there is the unique slimy feel of Silicone. Further, the resin forming the discontinuous film used in the present invention includes titanium oxide in order to improve the texture of the resin and addition of what is generally called a cross-linking agent such as melamine resin, isocyanate resin, and epoxy resin. , Metal oxides such as silicon dioxide, carbon, silica, zeolite, glass, aluminum,
Inorganic materials such as copper, silver and zinc, and crystalline acid insoluble substances obtained by hydrolyzing chitosan, collagen, wool, silk and regenerated cellulose, and cellulose fine particles disclosed in JP-A-3-111426. The organic material may be added, or matting agents, light stabilizers, ultraviolet absorbers, water repellents, water absorbing agents, pigments, etc. may be added.

As a method for adhering a discontinuous resin film to a fiber substrate, a method of impregnating a resin solution and then squeezing with a roll is generally used, but in addition to this, a reverse coater, a kiss roll coater, Any method such as using coating equipment such as gravure coater, knife coater, etc. and printing equipment, or applying the resin processing liquid to the release paper in advance and then laminating the surface layer of the fiber base material and transferring by pressing etc. can do. The amount of the resin film attached is preferably 1 to 20% by weight. If it is less than 1%, satisfactory anti-snagging property cannot be obtained, and if it exceeds 20% by weight, the snag is good but the texture becomes coarse and hard. More preferably, it is 3 to 10% by weight. The composite sheet of the present invention has 10 to 90 fiber filaments constituting the surface of the fiber base material.
The feature is that a% film is formed.

The resin coating should be 10 to 90% in the yarn. If it is lower than 10%, satisfactory anti-fusing property and snug cannot be obtained. Also, if it exceeds 90%, for example, 100%, and if the anti-friction property and the snug are satisfactory, the surface layer of the fiber base material is coated with a clearance to form a certain resin film. Although it is possible to manufacture it with the above-mentioned method, it is not preferable because a resin film layer is formed, resulting in insufficient breathability, causing stuffiness and unpleasantness, and rough texture and loss of wearing comfort. In the present invention, the area where the resin film is formed on the fiber yarns constituting the surface of the fiber base material is measured by scanning the composite sheet with a scanning electron microscope at a magnification of 50, and the composite sheet is manufactured by Mitani Corporation. It can be obtained by calculating the area ratio of the resin existing in the entire yarn area using SPECTRUM-II of the color image processing system.

The composite sheet of the present invention has a substantially discontinuous film on the surface of the fiber base material, and the fiber yarn on the surface has 10 to 10
It is only necessary that 90% of the film is formed, and the resin may exist in the thickness direction of the fiber base material. However, if resin is present in the thickness direction, the texture becomes coarse and hard and the wearing comfort is impaired.Therefore, for the purpose of softening the texture, silicone resin, wax resin, zirconium resin, fluorine is preliminarily pretreated. It is preferable to form the resin film after the treatment of the system resin. Further, water-absorption processing, antistatic processing, water-repellent processing, softening processing, etc., which are general finishing processing for fibers, may be incorporated in the steps before and after the resin film formation.

In particular, in order to improve the anti-friction property, a silicone resin, paraffin wax, isocyanuric acid derivative resin, fatty acid amide, and further melamine resin are formed after forming a resin film on the fiber base material. It is preferable to use one or more selected from the acrylic resins. More preferably, a silicone resin is preferable, and a dimethylpolysiloxane polymer is amino-modified, epoxy-modified,
A reactive silicone resin having a reactive structure such as carboxy-modified or an epoxy-modified dimethyl silicone oil is used. The application method is a usual dipping-padding-heat treatment method using a solution containing an anti-fusing agent. Generally, in the process of dipping in silicone resin-padding-heat treatment, the resin adheres to the surface of the monofilament of the fiber base material, so that the threads are easily slipped and the anti-snag property of the fiber base material surface is improved. Although it tends to remarkably decrease, the composite sheet of the present invention in which a resin film is adhered to a fiber base material has a resin film formed on the yarns constituting the surface of the fiber base material, so that the yarn is less likely to come off. It is characterized by almost no decrease in snug.

[0014]

BEST MODE FOR CARRYING OUT THE INVENTION Hereinafter, the present invention will be described in more detail with reference to Examples. The methods for evaluating the physical properties are as follows. (1) Area ratio of resin film on the fiber base material The composite sheet having a film formed on the surface of the fiber base material was photographed with a scanning electron microscope at a magnification of 50 times, and the area ratio of the resin adhering to the surface of the fiber base material was measured. Using SPECTRUM-II (trade name) of a color image processing system manufactured by Mitani Corporation, the area ratio of the resin existing in the entire area of the yarn is calculated. Resin adhesion area ratio = Area of thread where resin film is adhered / Area of entire thread x 100

(2) Friction and melting resistance When a test piece was brought into contact with a wooden roller (rubbing element) rotating at a surface speed of 2200 rpm at a contact pressure of 500 g, the time required for the test piece to open a melting hole due to frictional heat was measured. Measure. (3) Snagging property According to JIS-L-1058D-3 method. Operation time is 1
5 hours. (4) Feeling The composite sheet was touched by hand and sensory evaluated. ◯: Good texture △: Slightly hard but no problem
X: Coarse texture

[0016]

Example 1 A mock-loddy knitted fabric made of 70% ester and 30% cotton having a basis weight of 300 g / m ² was dyed with a disperse dye and a reactive dye, and then impregnated with the following resin processing solution,
After squeezing with a roll, heat treatment was performed at 80 ° C. for 1 minute and 120 ° C. for 2 minutes. In order to clarify the relationship between the resin adhesion area ratio and the performance, the area ratio of the resin film of the fiber base material was evaluated as shown in Table 1 by changing the solvent amount of the resin processing solution and the roll drawing ratio. In No. 7, the following resin processing solution was coated with a clearance to form a continuous film having a thickness of 15 μm on the surface of the fiber base material.

Resin processing solution Acrylic resin (manufactured by Dainippon Ink and Chemicals, Inc., trade name Chris Coat AC80) 90 parts Silicone resin (manufactured by Shin-Etsu Chemical Co., Ltd., trade name Polon Coat E) 10 parts Catalyst (manufactured by Shin-Etsu Chemical Co., Ltd.) , Trade name: tin-based catalyst) 0.1 part Toluene (addition amount can be arbitrarily changed depending on the resin adhesion area) 0-200 parts If the adhesion area ratio of the resin film is less than 10%, the anti-snagging property and anti-friction property are satisfied. Can not. Further, if the resin adhesion area ratio is 10% or more, the anti-snagging property of the fourth grade or higher can be obtained, but the larger the resin adhesion area ratio, the better the anti-friction property tends to be. However, it was revealed that when a continuous film is formed on the fiber base material to obtain a 100% sheet, the snug and the anti-friction property can be satisfied, but the texture is inferior.

[0018]

[Table 1]

[0019]

Example 2 A mock-loddy knitted fabric made of 70% ester and 30% cotton with a basis weight of 300 g / m ² was dyed with a disperse dye and a reactive dye, and the following resin processing solution was applied to a fiber base with a reverse coater (clearance 200 μm). The surface of the material was coated and then heat-treated at 80 ° C. for 1 minute and at 120 ° C. for 2 minutes. The area ratio where the resin film adheres is 45
%, The anti-snag property was grade 4, and the anti-fusing property was 20 seconds, and a good composite sheet was obtained.

Resin processing solution Acrylic resin (manufactured by Dainippon Ink and Chemicals, Inc., trade name Chris Coat AC80) 90 parts Silicone resin (manufactured by Shin-Etsu Chemical Co., Ltd., trade name Polon Coat E) 10 parts Catalyst (manufactured by Shin-Etsu Chemical Co., Ltd.) , Brand name tin-based catalyst) 0.1 part Toluene 200 parts

[0021]

Example 3 A mock-loddy knitted fabric made of 70% ester and 30% cotton with a basis weight of 300 g / m ² was dyed with a disperse dye and a reactive dye, and the following resin solution was applied to release paper with a clearance of 400 μm, followed by resin treatment. The surface of the knitted fabric is laminated on the surface of the solution, pressure-bonded with a press roll at 4 Kg / cm ² , and then the knitted fabric is peeled off.
Heat treatment was performed for minutes. Resin processing solution Urethane resin (Dainippon Ink Co., Ltd. trade name Bondeck 1850) 100 parts Epoxy resin (Dainippon Ink Co., Ltd. trade name SR-5L) 3 parts Thickener (Dainippon Ink Co., Ltd. product Famous Boncourt V) 3 parts 25% ammonia water 1 part

Next, as an anti-fusing process, after impregnating with the following compounding liquid, it is squeezed to 90% with a rubber roll. Then 8
Heat treatment was performed at 0 ° C. for 1 minute and at 160 ° C. for 2 minutes. Wax-based emulsion (Maysei Chemical Co., Ltd., trade name Meikatex 602-A) 40 g / liter Water-absorbing agent (Meisei Chemical Co., Ltd., trade name Meika Finish SMR-65) 3 g / liter Silicone emulsion (Meisei Chem. Co., Ltd., trade name Meika Finish NM-1) 10 g / liter Blocking isocyanate (Meisei Chemical Co., Ltd., trade name Meicanate MF) 8 g / liter The obtained composite sheet has a resin film adhesion area ratio. 25
%, The snag was grade 3 to 4, and the anti-fusing property was 12 seconds, and a good composite sheet was obtained.

[0023]

[Comparative Example 1] A mock loddy knitted fabric consisting of 70% ester and 30% cotton with a basis weight of 300 g / m ² was dyed with a disperse dye and a reactive dye, then impregnated with the following resin processing solution and squeezed at a drawing ratio of 80%. After that, heat treatment was performed at 80 ° C. for 1 minute and at 160 ° C. for 2 minutes. The area ratio where the resin film adhered was 5%, the anti-snag property was second grade, and the antifriction property was 3 seconds, and a good composite sheet could not be obtained. Wax resin (manufactured by Meisei Chemical Co., Ltd., trade name Mecatex HP-600) 30 g / liter Water-absorbing agent (manufactured by Meisei Chemical Co., Ltd., trade name Meika Finish SMR-65) 3 g / liter Isocyanate resin (Meisei Chemical Co., Ltd.) Made, trade name Meikanate MF 8 g / l Melamine resin (Sumitomo Chemical Co., Ltd., trade name Sumitex Resin M-3) 3 g / l Melamine catalyst (Sumitomo Chemical Co., Ltd., trade name Sumitex Accelerator) ) 0.3 g / liter

[0024]

Example 4 150d / 8f polyester and 45/1 cotton
Was used to obtain a fiber structure of a twill fabric (weight per unit area: 250 g) having a polyester content of 70% and a cotton content of 30%. This fiber structure was scoured, dyed with a jet dyeing machine using a disperse dye and a reactive dye, and dried. Next, this fabric is impregnated with the following resin processing solution, squeezed with a roll, and then at 80 ° C. for 1 minute, 120 minutes.
A heat treatment was performed at 2 ° C. for 2 minutes. The area ratio where the resin film adhered was 65%, the anti-snag property was grade 4 to 5, and the anti-friction property was 18 seconds, and a good composite sheet could be obtained. Resin processing solution Acrylic resin (Dainippon Ink Co., Ltd., trade name Chris Coat AC80) 85 parts Silicone resin (Shin-Etsu Chemical Co., Ltd., trade name Polon E) 15 parts Catalyst (Shin-Etsu Chemical Co., Ltd., trade name Tin catalyst) 0.1 part Toluene 200 parts

[0025]

Comparative Example 2 Polyester 150d / 48f and Cotton 45 /
1 was used to obtain a fiber structure of a twill fabric (weight per unit area: 250 g) having a polyester content of 70% and a cotton content of 30%. This fiber structure was scoured, dyed with a jet dyeing machine using a disperse dye and a reactive dye, and dried. Next, this fabric is impregnated with the following resin processing solution, squeezed with a roll, and then at 80 ° C. for 1 minute, 16 minutes.
Heat treatment was carried out at 0 ° C. for 2 minutes. The area ratio where the resin film adheres is 10%, the anti-snagging property is first grade, and the anti-frictional property is 8
Seconds, excellent anti-fusing properties were obtained, but snag was significantly reduced, and a satisfactory composite sheet could not be obtained. Wax resin (manufactured by Meisei Chemical Co., Ltd., trade name: Mecatex HP-600) 30 g / liter Silicone emulsion (manufactured by Meisei Chemical Co., Ltd., trade name: Meika Finish NM-1) 10 g / liter Water absorbing agent (Meisei Chemical Co., Ltd. ), Trade name Meika finish SMR-65) 3 g / liter isocyanate resin (Meisei Chemical Co., Ltd., trade name Meikanate MF) 8 g / liter melamine resin (Sumitomo Chemical Co., Ltd., trade name Sumitex Resin M-3) ) 3 g / liter Melamine catalyst (Sumitomo Chemical Co., Ltd., trade name Sumitex Accelerator) 0.3 g / liter

[0026]

[Example 5] A mock-loddy fabric made of 70% ester and 30% cotton with a basis weight of 300 g / m ² was dyed with a disperse dye and a reactive dye, and then a methylhydrogenpolysiloxane (large Nippon Ink Co., Ltd.
Silicone resin manufactured by Silicone Conc V and 1% aqueous solution of Catalyst SC-100 which is a catalyst) and then squeezed with a nip roll to a squeezing ratio of 90%, and then 160 ° C with a hot air dryer. For 3 minutes,
0.8% of the methylhydrogen polysiloxane active ingredient was attached to the fiber.

Next, the following resin processing solution was coated on the surface of the fiber base material with a reverse coater (curlance 200 μm), and then heat treatment was carried out at 80 ° C. for 1 minute and 120 ° C. for 2 minutes. Area ratio of resin film adhered is 52%
Thus, a good composite sheet was obtained in which the anti-snag property was grade 4, and the anti-fusing property was 18 seconds. In addition, since the composite sheet was pretreated with the silicone resin before forming the resin film, the texture tended to be softer than in Example 2, and the chitosan was added to the resin, so that the yellow grape Streptococcus (St
aphylococcus aureus ATCC6
538P (IFO12732)), the difference in the number of bacteria increased and decreased by 4.2, and 10 times of washing (JIS-
(Based on the L-0217 103 method), the difference in the bacterial count increase / decrease value was 3.8 and good antibacterial properties could be obtained.

Resin processing solution Urethane resin (manufactured by Dainippon Ink and Chemicals, trade name Crisbon NYT18) 90 parts Silicone resin (manufactured by Shin-Etsu Chemical Co., Ltd., trade name Polon E) 10 parts Catalyst (manufactured by Shin-Etsu Chemical Co., Ltd., Trade name: tin catalyst 1 part Chitosan fine powder (Katakura Chikkarin Co., Ltd., trade name: Deacetylation degree 82%) 1 part Toluene 200 parts

[0029]

EFFECTS OF THE INVENTION The composite sheet of the present invention is a sheet satisfying both the friction melting property and the anti-snag property as compared with the conventional one, and having an excellent feeling.

Claims (1)

[Claims] 1. A composite sheet in which a discontinuous film is formed on the surface of a fiber base material, and the discontinuous film is formed on the fiber yarn constituting the surface of the fiber base material in an amount of 10 to 90%. A composite sheet characterized by.