JPS58191275A - Production of fabric having water repellent property and water absorbability - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a method for processing a fabric in which one side of the fabric has a water repellent function and the other side has a water absorbing function.

Conventionally, in order to obtain fiber fabrics with shedding properties, anti-sweating, sweat-absorbing,
Antifouling, water absorption, moisture absorption, water repellency, oil repellency, pile building, anti-snag,
A number of post-processing techniques have been developed to impart various functions such as flame retardant, anti-melting, and antibacterial properties, but most of these processes are processing methods that impart umbrella functions, and are not compatible with two or three types of functions. There are only a few processing methods that combine these two functions. Moreover, even if processing methods are used to combine two or three types of functions, only those that have the same type of imitation LI, such as water repellency and oil repellency, antistatic and water absorbing properties, or antistatic and antifouling properties, are used. Ta.

Recently, there has been a growing demand for fabrics that retain different functions, and in particular, spawn clothing is a fabric that has water repellency as an outer garment and water absorbency as a fire protector.

It has been strongly requested in the uniform field.

The present inventors have arrived at the present invention as a result of intensive research into developing a processing method that allows different functions to be retained on each side of a fabric.

That is, in the production of a fabric in which one side of the fabric is water-repellent and the other side is water-absorbing, the present invention provides a fabric with a reactive acrylate monomer having water-absorbing properties, and then polymerizing the reactive monomer to perform a water-absorbing treatment. This is a method for processing a fabric having water repellency and water absorption, which is characterized by applying a water repellent to the other side and applying a water repellent to the other side to make it water repellent.

To be more specific, a fabric that has water repellency on one side and water absorption on the other side can be worn with the water absorbent side facing the desk to quickly diffuse perspiration when worn and eliminate stickiness on the skin. The water-repellent surface repels rain and water from the outside, giving it an excellent feeling of wearing.

The fabric in the present invention includes polynisder fiber, polyamide fiber, polyacrylonitrile fiber, acetate fiber, and polyvinyl fiber.

It refers to fibers made of synthetic fibers such as polyolefin fibers, non-woven fabrics, or blended, interwoven or non-woven fabric products of these synthetic fibers and natural fibers.

In the present invention, the reactive monomers having water absorbing properties include monopolyethylene glycol ester of acrylic acid or methacrylic acid, monopolyethylene glycol trimethylammonium salt of acrylic acid or methacrylic acid, and monopolyethylene glycol ester of acrylic acid or methacrylic acid. Monoethylene glycol phosphonium salt of acrylic acid, methoxypolyethylene glycol ester of acrylic acid or methacrylic acid (polymerization of polyethylene glycol [Fi1-2G) polyoxyethylene glycol < molecular weight 250-1500) dimethacrylate, polyoxyethylene glycol (molecular weight 1i2
50-1500) diacrylates and compounds represented by the general formula %.

Next, the method for imparting the water-absorbing reactive seven-layer includes a conventional banding method, a printing method with a relatively high viscosity solution, a coating method, or a spray method.
The foam processing method can be selected as appropriate.

A method of polymerizing the reactive r acrylate monomer having water absorption properties imparted in this way to form a film is to include a polymerization initiator such as benzoyl peroxide or potassium persulfate in the monomer solution. 1 at 90℃~140℃
A method of steaming for -1.0 minutes, a method of irradiating ultraviolet rays in the presence of a photosensitizer such as benzophenone, or a method of irradiating a surface coated with a reactive monomer with an electron beam can be appropriately employed.

The method of applying the water repellent agent of the present invention is to apply a relatively high viscosity liquid or emulsion solution to one side of the fabric by printing or coating, spraying, foam coating method, etc. in a manner that does not penetrate into the back side of the fabric. will be adopted.

Step #'i of single-sided water-repellent finishing may be carried out either before or after the water-absorbing finish on the fabric; in other words, after the water-absorbing finish on both sides of the fabric is applied by a patting method or the like, the water-repellent finish may be applied to one side. Alternatively, a water-absorbing finish may be applied to one side by a coating method or the like, and then a water-repellent finish may be applied to the other side. Conversely, one side may be subjected to water repellent treatment and then subjected to water absorption treatment by banding or coating.

Any conventionally known water repellent agent may be used for the water repellent treatment in the present invention. Examples include fluororesins such as 70-roalkyl ester of polyacrylic acid, silicone resins such as methylhydrodienepolysiloxane or dimethylpolysiloxane, and the like.The present invention will be specifically explained below with reference to Examples.

It's a button.

. Water absorption rate (winking property): 15cm+ according to JISL1079-56
Attach a 3 g cm x 3 g cm test piece to a trap so that it does not sag. Next, the billet containing distilled water was adjusted so that 26 to 27 water droplets were dropped per liter of water, and then the water droplets were placed on the test piece so that the surface of the test piece was 2 cm from the tip of the billet. At this time, move the stop 1 inch and measure the time it takes for water droplets on the test piece to appear without any special reaction. If it takes more than 180 seconds, the test will be stopped and the test will be made longer than 180 seconds.

0 Water repellency Compliant with JX8L-1079-66, 20 c
m x 20 cm test piece with a diameter of 15.2α<K
L: To avoid wrinkles, align the center of the spray with the center of the frame, pour 250 iu of room temperature water into the funnel, and spray this onto the test piece. Next, after removing excess water droplets, evaluate the wet state by comparing and contrasting it with the judgment standard piece.
Oil repellent AATCICj Tea Method l l 8
-I made a profit in 1975.

・) Durability: Durability (washing resistance) was examined by washing in a 40°C washing liquid containing 1 t/l of neutral detergent on a home-style 4i1 Iso.

No washing, continuous binding.

The case of washing for 3 minutes is Ln, and the case of continuous washing for 30.0 minutes is ◎.

The present invention will be specifically illustrated by examples above. In addition,
In the following examples, all letters ``chi'' mean ``heavy duty''.

Example 1 A knitted fabric (basis weight 250 f/lll1') knitted into a punch liner structure using polyethylene terephthalate false twisted yarn (150 denier/48 filaments) was subjected to normal scouring precent and dyeing, and then immersed in the following pad solution and mangled. It was squeezed uniformly (pink amplifier rate 57 inches).

Immediately put this in a steamer while keeping it moist.
The material was heat treated with saturated steam at .degree. C. for 5 minutes. After the heat treatment, it was washed for #h and then dried.

Then, using a gravure roll coater, Asahi Guard A0
730 (Fluorine-based water repellent emulsion manufactured by Asahi Glass Co., Ltd.) 5. Penetrate the coating liquid to 1/3 of the depth of the knitted fabric, dry at 121111 for 3 minutes, and then dry at 170°C for 3 minutes.
Heat setting was performed for 0 seconds to complete single-sided water repellent finishing.

The performance of the obtained processed product is shown in Table 1.

As shown in Table 1 @ Table 1, the fabric according to the present invention has water repellency and water absorption with excellent durability.

Example 2 Polyethylene terephthalate filament yarn (150 denier/48 filament) was subjected to K false twisting and then woven into a tropical weave* (fabric weight 210f/ze). After applying normal scouring prescent and dyeing to this sample, boron M
R (silicone water repellent manufactured by Shin-Etsu Chemical Co., Ltd.) 5 excellent, Kamerist OZ (manufactured by Shin-Etsu Chemical Co., Ltd.) as a catalyst o, o 5
*After coating with an aqueous solution, it was dried and heat-treated to make one side water-repellent, then immersed in the following banding solution and squeezed uniformly with a mangle (pink amplifier rate 46 inches).

This was irradiated on the other side of the Seki water-repellent surface for 30 seconds using a 100f high-pressure mercury lamp, washed with water, and dried.

The performance of the obtained processed product is shown in Table 2.

As shown in Table 2, each side of the fabric has excellent water repellency and water absorption.

Patent applicant Teijin Ltd. Agent Patent Attorney Former 1) Hiroshi Jun 418

Claims (3)

[Claims] (1) In the production of a fabric in which one side of the fabric is water repellent and the other side is water absorbent, a reactive acrylate monomer having water absorption properties is imparted to the fabric, and then the reactive monomer is polymerized to perform water absorption treatment. A method for processing a fabric having water repellency and water absorption properties, characterized by applying a water repellent agent to one side of the fabric to make it water repellent. (2) Presence of a polymerization catalyst Claims for subjecting FK wet heat treatment to polymerization of reactive monomers @ Processing method described in item (1) (3) Special ffd! polymerization of a reactive heptamer by UV irradiation in the presence of a photosensitizer! Desired range No. 1 (Processing method described in Item 11 A-4) A special method of polymerizing reactive monomers by electron beam irradiation! Range of FdJ requirements Processing method described in item (1) (
5) A processing method according to claim (1), wherein the water-repellent finish is heat treatment of a 7-IA resin such as a 70-roalkyl ester of polyacrylic acid. Or heat treatment of rincon resin such as dimethylpolysiloxane.
Processing method described in item (1) of i*required range