JPS5938352B2 - How to make cut pile cloth - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a method for producing a cut pile polyester fabric having excellent gloss and feel.

Conventionally, acrylic synthetic fibers have been widely used in cut pile products such as artificial fur, boa, and high pile products, but although these products are quite similar in appearance to natural fur products, they lack overall stiffness. Further, it has drawbacks such as being easily dented during use, feeling sticky, or losing its initial texture when washed or the like.

The use of polyester-based synthetic fibers has been considered to compensate for these shortcomings, but so far nothing has been sufficiently successful.

The reason for this is that polyester fibers have extremely good crimp retention properties, and in particular, when dyed with cotton, the so-called crimp becomes fixed, and in the final finishing process of cut pile cloth, the polyester fiber has a so-called "polisher" polishing process. The crimps of thick denier fibers, which correspond to prickly hair, may not be stretched sufficiently, or even if they are, extremely high temperature treatment is required, resulting in gloss,
This was thought to be due to the inability to obtain a product with a quality comparable to conventional products in terms of feel and so on.

It is one of the fates of polyester fibers that crimping is stabilized when heat is applied, and unless this problem is solved in conjunction with the manufacturing conditions of cut pile fabrics, cut pile fabrics that are mainly composed of polyester fibers will not be produced. It turns out that it is difficult to obtain.

The present inventor has arrived at the present invention as a result of extensive research into polyester fibers suitable for pricking parts that can be crimped and stretched at sufficiently low temperatures during polylash processing.

That is, the present invention provides a method for producing cut pile cloth in which at least the fibers constituting the pile are copolymerized polyester-based synthetic fibers, in which the temperature of the roller during polylash processing is adjusted from the secondary transition point of the copolymerized polyester +30°C. Copolymerized polyester fibers that have been heat-treated in advance prior to crimping are used as pile threads to cut the crimps so that the crimps at the stinging hair part are sufficiently elongated and removed when the process is carried out at temperatures up to the secondary transition point +80°C. It relates to producing pile cloth.

Such copolyester fibers have a temperature of at least 150°C or higher, preferably 170°C>230°q, more preferably 1
It has been found that heat treatment at a temperature of 90-220°C is necessary.

Such heat treatment is usually carried out under conditions that allow elongation or contraction of a constant length or about 10%.

Since cut pile commercial polyester fibers are generally used in a stable manner, heat treatment is usually carried out continuously while contacting them on a heated roller.

Next, crimps are applied to impart spinnability, but as it is extremely important for the texture that crimps be removed in the post-processing process, heat treatment during or after crimping is kept to the minimum necessary. It turned out that it should be.

The preferred treatment temperature is 60-120°C, more preferably 8
The temperature is 0 to 100°C.

In addition, the bata polyester fibers obtained in this way can sufficiently remove crimps in a single process, and have a relatively high Young's modulus, giving the final product appropriate stiffness and bulk, resulting in excellent gloss and It was found that a product with a tactile feel was obtained.

The present invention is particularly effective when using pre-dyed polyester fibers as cut pile commercial fibers.

Generally, for white or light colors such as yellow, undyed materials may be used in combination, but normally they are dyed to an appropriate color.

For dyeing, cotton dyeing, undyed fabric, or so-called anti-dying after making it into pile fabric is used, and in most cases, cotton dyeing is used.

This is to reduce dyeing costs and eliminate staining spots.

Conventional bi-pile polyester fibers are usually heat treated at 120 to 130°C during the dyeing process, which prevents the crimps from fixing and makes it extremely difficult to remove the crimps in the subsequent process. Because of the aging process, there was a problem in that it was not possible to make products with a good texture.

However, as in the method of the present invention, a bi-pile yarn made of cotton made of copolymerized polyester fiber which has been anti-dyed in advance and which has been heat-treated at 150° C. or higher before crimping is used. When used to make bi-pile cloth, it not only has the unique texture and characteristics of polyester fiber, but also exhibits excellent crimp removal properties in the final finishing process, making it possible to produce products with excellent gloss and texture. It can be done.

In the present invention, by using a copolymerized polyester fiber as the polyester fiber constituting the bi-pile cloth, the polyurethane temperature is within the range from the secondary transition point temperature of the copolymerized polyester +30°C to the secondary transition point +80°C. Even when carried out at a low temperature, the crimp stretches sufficiently, and there are no drawbacks such as loss of gloss of pile cloth or generation of thermal fusion points when the temperature is high, and it has excellent gloss.
A product with good texture can be obtained.

The copolymerized polyester fiber used in the present invention includes an alkylene glycol having 2 to 4 carbon atoms, an aromatic dibasic acid, and isophthalic acid as a third component.

Conventionally known copolymerization components such as sulfoisophthalic acid, adipic acid, sepatic acid, neopentyl glycol, pentaerythritol polyethylene glycol, and polyethylene glycol methyl ether are used.

Further, the copolymerized polyester fiber used in the present invention has a smaller coefficient of friction between the fibers, similar to natural fur, giving a more preferable feel.

Preferably, the coefficient of static friction measured by the lidar method is 0.2.
It is preferably 0.15 or less.

For this purpose, fibers with irregular cross sections or fibers whose surfaces are coated with silicone or the like are suitable for use.

The method for producing the cut pile cloth in the present invention is to first card the above-mentioned copolymerized polyester fibers, either dyed or undyed, to supply fiber bundles in the form of slivers or spun threads as pile yarns, knitting, weaving, and toughening. A cut pile cloth is prepared by cutting or the like, and after gluing a base cloth if necessary, the surface is subjected to a shearing process in advance, and then a polylashing process is performed in the forward and reverse directions.

The temperature of the polyurethane roller is within the range from +30°C to the secondary transition point of the copolymerized polyester used to +80°C.

The maximum processing temperature before the first step of polyrashing should be kept as low as possible below the first polyrashing temperature.

After the polylashing process, the fabric is finished with a shearing process.

The denier of the polyester fiber used is typically 3-80, preferably 10-20.

This is because it is used as stinging hair.

Of course, it can also be applied to other deniers.

In addition to circular fibers, irregular shapes such as T-shapes, T-shapes, U-shapes, and large shapes, hollow cross-sectional shapes, etc. can be used as the fibers.

Among these, hollow fiber has a unique texture due to its lightness and stiffness.

The products obtained by the method of the present invention take advantage of their excellent characteristics and can be used as cut pile products such as fur, boa, and bi-pile for coats, collars, linings, hats, doll toys, slippers, rugs, car seats, etc. Can be widely used.

In addition, it can also be preferably used as a substitute for blankets and sheets.

It is desirable that the copolymerized polyester fiber used in the present invention has excellent anti-pilling properties.

This not only prevents pilling during use, but also facilitates shearing during processing and is effective in creating a beautiful surface finish.

In this sense, it is desirable that the anti-pilling property be at least 4 Vd or less in strength.

The present invention will be explained below with reference to Examples, but the present invention is not limited thereto.

Example 1 0.1 mol % of methoxypolyethylene glycol and 0.3 mol % of pentaerythritol were copolymerized [0.5
5 (in an isostatic liquid of tetrachloroethane and phenol 3
A polyester spun yarn was obtained by spinning polyethylene terephthalate (secondary transition point: 65°C) (measured at 0°C) by a conventional method.

This was assembled into a tow of 500,000 denier, stretched 310% in a water bath at 75°C and 98°C, and then heat-treated for fixed length using a heated roller at 200°C.

Next, after applying an oil agent and applying mechanical crimping in a wet state,
After free shrink heat treatment at ℃, cut into 15 denier 51
It was made into a stable fiber of mm.

Similarly, 6 denier 5] m43 denier 3271!7
+! stable fiber was obtained.

Furthermore, these were dyed in shearling beige color at 130℃, mixed in a ratio of 30:30:40%, and then carded, and 100% acrylic yarn was used as the ground yarn to create MAXI-PI.
A pile cloth for finishing cloth of 1.5 m was obtained using an LE machine.

This was back glued, dried, shared, and then transferred to poly lash processing.

The polyurethane was passed through it twice in forward and reverse directions at a temperature of 140° C. to 120° C., and the finishing shearing was performed again.

A detailed observation of the resulting high-pile cloth reveals that the downy hair is well-filled and fills the lower part, and the prickly hair is well crimped, giving the high-pile cloth a gentle luster and smooth feel. Was.

When this product was washed with water and examined for changes in physical properties, it showed almost no change and maintained a good texture, whereas a similar product made from acrylic synthetic fibers suffered significant wear and tear. was.

Comparative Example 1゜When drawing the spun yarn obtained in Example 1, it was crimped and then subjected to free shrinkage heat treatment at 150°C without passing it through a fixed length heated roller.

The thus obtained 15 denier, 51 mm stable was processed into a high pile cloth in the same manner as in Example 1.

When the obtained product was closely observed, it was found that the crimps in the prickly hair portion were not sufficiently extended, and as a result, the product was inferior in gloss, texture, etc.

Claims (1)

[Claims] 1. In a method for producing cut pile cloth in which at least the fibers constituting the pile are copolymerized polyester synthetic fibers, the copolymerized polyester synthetic fibers are heat-treated at 150°C or higher prior to crimping, and then crimped. A pile cloth is manufactured by using the polyester as a pile yarn, and the pile cloth is coated with a polyurethane gloss in which the temperature of the roller is within the range of the secondary transition temperature of the copolyester +30°C to the secondary transition temperature of the copolyester +80°C. A manufacturing method for cut pile cloth that is characterized by passing it through an exit process.