JPH0482971A - Method for producing raised web having water-repellency and oil-repellency - Google Patents

Abstract

PURPOSE:To obtain an elegant raised web having rich durability, good water repellency and oil repellency by treating the web with a water-repellent and oil-repellent fluoro agent containing an amino plast resin, etc., drying the treated web, raising the fibers of the web and subsequently treating the raised web with the same treating solution as the above-mentioned treating solution. CONSTITUTION:A web comprising natural fibers or synthetic fibers is treated with a water-repellent, oil-repellent fluoro treating solution containing at least one kind selected from aminoplast resins, glyoxal resins or blocked isocyanates, dried, raised, treated with a water-repellent, oil-repellent fluoro treating solution containing at least one kind selected from aminoplast resins, glyoxal resins and blocked isocyanates, dried and heated to obtain a raised web having rich durability, sufficient water repellency, oil repellency, elegant appearance and good touch.

Description

DETAILED DESCRIPTION OF THE INVENTION (Industrial Field of Application) The present invention relates to a method for producing a raised fabric having water and oil repellency.

(Prior Art) Conventionally, raised fabrics in which the surface fibers of a fabric are brushed with clothing, sandpaper, etc. to form naps are known, and the apparent thickness of the fabric is increased to improve the texture and heat retention of the surface. things are being done. In other words, cotton kohl-ten, velveteen, etc. are well known as raised fabrics.

(Problems to be Solved by the Invention) However, even if such a raised fabric is subjected to ordinary water-repellent and oil-repellent finishing, sufficient water- and oil-repellency cannot be obtained, and there are also problems in its durability. In other words, when a water/oil repellent agent is applied to a napped fabric by, for example, the pa/noodle/dry method, the naps will cover the fiber surface during padding, and the naps will interfere with the water/oil repellency. This is because the oil coating is not uniformly formed on the fiber surface.

On the other hand, even if a fabric is subjected to a normal 18 water/oil repellent treatment and then raised to form naps, sufficient water repellency and ↑Ω oil resistance cannot be obtained, and there are also problems with its durability. That is, this is because the water/oil repellent film on the fiber surface is partially scraped off by the raising.

The present invention has been made in view of the above-mentioned problems, and aims to provide a method for producing a fabric that has an elegant appearance and texture, and has excellent water and oil repellency.

(Another means to solve the problem) The above purpose is to apply a treatment liquid consisting of at least one selected from the group consisting of aminoplast resin, glyoxal resin, and blocked isocyanate, and a fluorine-based water/oil repellent to the fabric. a first step of drying the dried fabric; a second step of raising the dried fabric to form a nap; and adding at least one member selected from the group consisting of aminoplast resin, glyoxal resin, and blocked isocyanate to the raised fabric; This is achieved by a method for producing a raised fabric having water repellency and (Ω oil properties) characterized by comprising a third step of applying a treatment liquid consisting of a fluorine-based water repellent (Ω oil agent), drying it, and heat-treating it.

The present invention will be explained in detail below.

The fabric referred to in the present invention includes woven fabrics, 2 knitted fabrics, 5 non-woven fabrics, etc., and its constituent fibers include natural fibers such as cotton, linen wool, and silk, synthetic fibers such as nylon, polyester acrylic, etc.
Alternatively, they may be used in combination.

As the fluorine-based water/oil repellent used in the present invention, those having a barfluoroalkyl ester group include Asahi Guard AC, -310, Asahi Guard AC-710, Asahi Guard AG-730, Asahi Guard AG-740, and Tezahi Guard. A0780 (all trademarks, manufactured by Asahi Glass Co., Ltd.), Zircocet SR and Zircocet OW New (all trademarks, manufactured by Shichifuku Chemical Co., Ltd.), etc., which have a perfluoroalkyl sulfonamide group, such as Dicguard A- H8, Dick Guard F50 Dick Guard F55. Dick Guard F60゜Deck Guard F
70 and Dick Guard F80 (both trademarks, manufactured by Dainippon Ink Co., Ltd.). The amount of the fluorine-based water/oil repellent used should be about 0.4 to 5.0% of the weight of the fabric.

In order to increase the durability of the fluorine-based water/oil repellent, at least one selected from the group consisting of aminoplast resin, glyoxal resin, and blocked isocyanate is used. Examples of the aminoplast resin include melamine resins such as trimethylolmelamine and hexamethylolmelamine, and examples of the glyoxal resin include dimethylol dihydroxy ethylene urea and tetramedylol glycol urel. Moreover, when using aminoplast resin or glyoxal resin, it is preferable to use a catalyst together.

Examples of methods for applying the treatment liquid consisting of at least one selected from the group consisting of aminoplast resin, glyoxal resin, and blocked isocyanate and a fluorine-based water/oil repellent include spraying, coating, padding, etc. A padding method is preferred.

After applying a treatment liquid consisting of at least one selected from the group consisting of aminoplast resin, glyoxal resin, and blocked isocyanate and fluorine thread I8 water and oil repellent,
Dry at 80-130°C for 10 seconds to 3 minutes.

In the present invention, the method of raising the fabric to form raised naps may be by using a cloth needle, or by using emery paper, sand cloth, etc., or by using a combination of the two. Further, the length of the raised fluff may be adjusted by jarring or the like.

Next, a treatment liquid consisting of at least one selected from the group consisting of aminoplast resin, glyoxal resin, and blocked isocyanate and a fluorine-based water/oil repellent is applied to the raised fabric, and then dried. etc. can be carried out in the same way as the first time. And after drying it is 120
Heat treatment at ~180"C for 10 seconds to 3 minutes.

(Example) Hereinafter, the present invention will be specifically explained with reference to Examples.

Example 1 A tassosa fabric with a warp density of 95 threads/inch and a weft thread density of 36 threads/inch, using #20 single yarns for the warp and #10 single yarns for the weft, was subjected to hair burning, desizing, scouring, bleaching, and mercerization using conventional methods. , dyed.

1st step = This dyed cloth is treated with fluorine-based water/oil repellent as Asahi Guard AG310 (manufactured by Asahi Glass ■, solid content 27% by weight) 100g/l as BP as blocked isocyanate.
II (manufactured by Meisei Chemical Co., Ltd.), Sumitex Resin M6 (manufactured by Sumitomo Chemical Co., Ltd.) 5 g/l as an aminoplast resin,
As a glyoxal resin, Beckamine LKS (manufactured by Dainippon Ink ■) Log/β, as a catalyst for aminoplast resin and glyoxal resin, Sumitesoku Catalyst ACX (manufactured by Sumitomo Chemical ■) 3 g/j! , and water in a single bath, squeezed to a pink amplifier ratio of 70%, and dried at 130°C for 2 minutes.

2nd step: 100 mesh sands of heat-treated fabric
It was raised and brushed three times using a roller sander with paper.

3rd step: The brushed fabric is immersed in a treatment solution prepared in the same manner as in the 1st step, squeezed to a pick-up rate of 70%, and heated to 130°C.
The product of Example 1 was obtained by drying at 160 °C for 2 minutes and by baking at 160 °C for 4 minutes.

Comparative Example 1 A product of Comparative Example 1 was obtained by performing the first and second steps in the same manner as in Example 1 using the same dyed fabric as in Example 1.

Comparative Example 2 A product of Comparative Example 2 was obtained by performing the second and third steps in the same manner as in Example 1 using the same dyed fabric as in Example 1.

Next, Example 1. The water repellency and oil repellency of the products obtained in Comparative Example 1 and Comparative Example 2 were measured. The results are shown in Table 1.

In addition, 1θ aqueous is JIS L-1092x play method,
In addition, the oil repellency was measured by the method specified in AATCC-TM 118, and the washing was carried out 20 times according to the JIS L0217 105 method and air-dried. It can be seen that the obtained product retains water and oil repellency even after washing 20 times.

(Effects of the Invention) As described in detail above, according to the method of the present invention, it is possible to obtain a fabric that has an elegant appearance and tactile nap, and has excellent water and oil repellency both initially and after washing. ,
It is extremely useful for casual use.

Moreover, it does not require any special equipment and can be provided at low cost.

Claims (1)

[Claims] (1) A first step of applying a treatment liquid consisting of at least one selected from the group consisting of aminoplast resin, glyoxal resin, and blocked isocyanate and a fluorine-based water/oil repellent to the fabric, and drying the fabric; a second step of raising the dried fabric to form raised naps, and adding at least one member selected from the group consisting of aminoplast resin, glyoxal resin, and blocked isocyanate to the raised fabric;
Apply a treatment liquid consisting of fluorine-based water and oil repellents, dry,
A water repellent product characterized by comprising a third step of heat treatment.
A method for producing a raised fabric having oil repellency.