JPS6043465B2 - Method for manufacturing animal hair-like pile fabric - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a method for producing pile fabrics that have the feel and appearance of natural fur.

Traditionally, synthetic fiber pile fabrics have been widely used as artificial fur in the form of boas, seals, high piles, latsels and other raised products for coats, linings, hats, slippers, rugs, toys, etc. The number is on the rise.

For many of these synthetic fiber pile fabrics, efforts have been made to create natural fur-like products, and various patents have been filed.

For example, Tokuko Sho 48-20914, 49-45743,
Many other methods have been proposed, such as No. 52-10956. To briefly explain the structure of natural fur, as shown in Figure 1, the appearance of fur is generally made up of quite thick and long fibrous layers that extend straight from the root and have a thin, pointed tip. In addition, a crimped, fairly thin and short fiber layer, so-called downy hair 2, is present so as to cover the skin surface (skin layer) 3, forming an inner layer.

The density of these hairs is such that the pore spacing is 0.1 to 0.2 Wg.
The ratio of stinging hair to downy hair is about 20 to 30% of the total animal hair.

The thickness of this stinging hair varies depending on the type of animal hair, but the thickness of downy hair ranges from 0.1 denier to about 3 to 4 denier at most. In order to obtain the above-mentioned natural fur-like pile fabric, the conventional method is to supply two types of fibers with different heat shrinkability as pile yarn, weave,
Alternatively, by shrinking one of the fibers after knitting,
There is a method of obtaining a pile product having two types of long and short piles.

With this method, it is only possible to obtain threads that have a difference in length and shortness among the thread units that make up the pile, and it is difficult to obtain a pile density with narrow pore spacing like that of actual animal hair.
Thin or short bristles have drawbacks such as the underlying fabric being visible.

Furthermore, in conventional methods, the ratio of prickly hair to downy hair is quite different from that of natural animal hair, and there is a tendency for the prickly hair to generally increase. On the other hand, for downy hair, high shrinkage type fibers of 3 to 5 deniers are generally used, but after shrinkage they become quite thick.
Like natural downy hair, thin and dense hair is not produced. For this reason, the texture of animal hair-like pile fabrics made of synthetic fibers is inferior to natural fur in terms of its overall flexibility, and it is difficult to see subtle changes in the hair as it moves in the breeze. This requires future consideration.

On the other hand, there have been few studies on the back side of the pile, and the only treatment that has been done is to back the pile from the back side to prevent the pile from falling through.

For this reason, the backing causes a deterioration in the feel, and the structure of the base fabric appears exposed on the back side, giving the product an artificial and cheap feel. As a result of various studies aimed at solving these conventional problems, the present inventors have discovered a method for producing a genuine animal hair-like pile fabric that has the feel and appearance of natural fur.

That is, the gist of the present invention is that the single fiber fineness is 0.
After overlapping a sheet made of short fibers of 8 to 3 deniers on the back side of the synthetic fiber pile fabric, a pressure of 5 to 50 denier is applied from the nozzle.
By applying a liquid columnar flow, a liquid fan flow, a slit flow, etc. injected at 100k9/Clt to the sheet surface, the short fibers constituting the sheet and the fibers constituting the base fabric of the synthetic fiber pile fabric are entangled and , a method for producing an animal hair-like pile fabric, characterized in that downy hair is formed by penetrating a part of the short fibers constituting the sheet near the root of the pile fabric.

Hereinafter, the present invention will be explained in more detail. In the present invention, the single fiber fineness is 0.8 to 3 deniers! The reason for using a sheet made of short fibers is because of its role as downy hair, the sheet formability, and the entangling and penetrating properties of the sprayed liquid treatment described below.

That is, when the single fiber fineness is less than 0.8 denier, it is difficult to form a sheet using general sheet forming methods, and a special method must be used. On the other hand, if the hair exceeds 3 deniers, it will lose its characteristics as downy hair.
The object of the present invention is difficult to achieve because the jetting liquid treatment results in poor entanglement and penetration. As long as the short fibers forming the sheet are within this range of fineness, those of a single fineness may be used, or short fibers of different finenesses may be mixed and used. The fiber materials used for the sheet include natural fibers, recycled fibers, synthetic fibers, etc. alone or in a mixed state, and these include card, garnet,
The web can be formed using a land webber or the like.

Generally, a card web forming method is used, but in this case,
Fiber lengths of 25 to 127 lengths can be used, but from the point of view of penetrability, 25 to 51 lengths are appropriate. The basis weight of the sheet is preferably about 20 to 100 y/Tl, and if the basis weight is less than 20 y/Tl, the coverage of the back side is poor, and therefore several sheets must be overlapped, resulting in an increased number of treatments.

In addition, when it exceeds 100 y/d, the amount of fiber movement due to liquid treatment increases, resulting in increased intertwining of short fibers and poor appearance.Furthermore, it is necessary to increase the fluid treatment pressure, which causes This is not preferred because the appearance tends to be uneven. The short fibers used in this sheet can be used in a cotton-dyed state, an undyed state, or a mixture thereof.

The synthetic fiber pile fabric as used in the present invention refers to knitted fabrics or woven fabrics having raised naps on the entire surface, such as high piles, boas, seals, latssels, other nap products, and flocked fabrics.

This pile fabric is provided in a pre-dyed or undyed state, and if it is provided in an undyed state, it can be colored by dip dyeing, continuous dyeing, printing, etc. in a subsequent process.

By appropriately combining the base fabric density of the pile fabric and the injection liquid treatment conditions described below, it is possible to provide a fairly wide range of diversity in terms of performance, feel, and appearance.

As the base fabric of the pile fabric, fibers having latent shrinkage, such as high shrinkage acrylic fibers, high shrinkage polyethylene,
When terephthalate fibers or the like are used, it is possible to obtain a product that is densified by being subjected to a shrinkage treatment after being treated with a jet liquid, has a high pile density, and has a high-quality appearance on the back side.

In the present invention, the short fiber sheet and the synthetic fiber pile fabric are integrated by a liquid jetting process, and as this liquid jetting process, a liquid columnar flow, a fluid fan flow, and a slit flow can be used.

Generally, in order to intertwine or penetrate the short fibers constituting the sheet with the fibers constituting the base fabric of the pile fabric, a columnar flow as thin as possible is preferred. However, it may be practically effective to combine various liquid jet treatment methods in view of the appearance, feel, or operability of the resulting product. In the liquid jetting process, it is preferable to jet the fluid onto a support member such as a net or a roll while the pile surface is in contact with the support member and/or both ends are gripped.

In this case, the supporting member used has a substantially smooth surface and the pattern of the supporting member is not formed on the pile fabric.
Moreover, any material can be used as long as the injected liquid can be quickly removed. If the supporting member has large irregularities, a pattern will be formed on the sheet surface by the liquid jet treatment, and the pile fabric will become more disturbed, so it is not suitable for the present invention. When spraying while holding both ends with pins or clips during this treatment, good results may be obtained in terms of preventing wrinkles caused by the sprayed liquid and uniform treatment in low basis weight products. Further, depending on the structure of the pile fabric, it is possible to carry out the liquid jet treatment while holding the support at both ends. Any liquid can be used for the liquid jet treatment, except for the solvent for the treated fibers.
Water or warm water is preferred because of ease of handling.

Also, the effect of fluid jetting can be increased by adding a small amount of additive to the liquid. Additive. As an example, water-soluble polymeric substances as viscosity improvers, such as
Polyvinyl alcohol, sodium alginate, carboxymethyl cellulose, etc. Also, substances that improve plasticization and wetting in the liquid, such as softeners and wetting agents, can be used! Wear. The hole diameter of the nozzle that injects the liquid is usually 0.06 to 1.0 w1 in the case of columnar flow, preferably 0.1 to 0.3
In the case of fan flow, it is 0.1 to 2.0Tmn, preferably 0.5 to 1.5Tmn. The pressure of the liquid used is usually 5 to 100 kg/(4), but it should be determined in relation to processing speed, entangling effect, appearance, etc.

If the pressure is too low, a sufficient entangling effect cannot be obtained, and if the pressure is too high, it is not only economically disadvantageous, but also leaves traces of liquid treatment, destroys the shape of the short fiber sheet layer, and seriously impairs the appearance. I don't like it because it hurts. Generally, 10-40kg/
Al level is preferable to enhance this effect. Further, the distance between the injection port and the sheet is suitably about 1 to 20 cm. This liquid spraying treatment can be carried out once or several times in succession depending on the thickness of the short fiber web layer, the number of stacked sheets, and the base fabric density of the pile fabric. j The pile fabric thus obtained is either directly dried or, if fibers with latent shrinkage are used as the base material, subjected to shrinkage treatment such as steam treatment or hot water treatment. ,
dried. Then, backing treatment with an elastic polymer may be performed as necessary. This backing treatment should be limited to a level that does not impair the texture, and elastic polymers such as polyurethane, acrylic rubber,
Known elastic polymers such as nitrile rubber, butadiene, chloroprene rubber, or derivatives thereof can be used as they are. Additionally, depending on the desired product, an animal hair-like hue may be imparted by printing or discharging from the pile surface, or light raising may be achieved by separating or raising the pile surface, or by puffing from the web surface. By carrying out the treatment, it is also possible to further improve the feel and change in appearance.

The drawings will be explained below. FIG. 1 shows a cross-sectional view of natural animal hair, in which 1 shows the prickly hair, 2 shows the downy hair, and 3 shows the skin layer.

FIG. 2 shows a cross-sectional view of a conventionally known long and short pile fabric, in which a base fabric 9 consisting of base diameter yarns 4, 4'' and base weft yarns 5 corresponds to a skin layer of natural animal hair, and this base fabric also includes A pile yarn 6 is implanted on a cloth 9, and the pile yarns include a short pile consisting of crimped fibers, 7 (corresponding to downy hair in animal hair), a long pile consisting of non-crimped fibers, and 8 (corresponding to downy hair in animal hair). Fig. 3 shows a cross-sectional view of the animal hair-like sealing fabric obtained by the present invention, in which the ultrafine fibers 10 are intertwined with the base fabric 9 and cover the surface. Furthermore, it is shown that a part of it penetrates the root of the pile yarn and forms downy hair.Hereinafter, the present invention will be explained in more detail with reference to Examples.

Example 1 1 denier x36r! r! A web with a basis weight of 60 q/y was produced by a card method using pre-dyed raw cotton of wet-processed acrylic fiber of n.

On the other hand, for the synthetic fiber pile fabric, dry acrylic fiber 15 denier x 5 lwt and 8 denier x 51 = raw cotton are mixed, then a worsted yarn 2/24 MC is spun, and this yarn is used to create a double pile using a pile loom. While weaving the cloth, cut the center part with a knife and get a pile length of 15T! Rl
A seal fabric of n was obtained.

The pile surface of this seal fabric was printed to look like animal hair, and then dried by soaping, split, and finished with a polisher and shearing. After overlapping the web on the back side of this pile fabric, the pile side was placed on the wire mesh side and
The web was placed on a 0-mesh wire mesh and water jet treatment was performed from the web side. Subsequently, the above-mentioned web was further superimposed on this entangled web, and then the same water jet treatment was performed again to entangle and penetrate the pile fabric with a total of 120 y/y of web. Water jet treatment has a hole diameter of 0.15w and a distance between holes of 1T1r! 40y/D using RL liquid injection nozzle
A water stream was sprayed at a pressure of G. The distance between the spray nozzle and the web was 4C7X, and the wire mesh carrying the web was moved at a speed of 27n/min.

Next, the laminate was introduced onto a metal roll with a diameter of 20 cm, and a water jet was sprayed from a height of 4 CrfL above the web at a pressure of 40 y/DG using the same nozzle, followed by drying. For this product, after applying water-dispersible polyurethane resin from the back side using a roll coater method,
0Wr! ! A heat treatment of t was performed.

The amount of polyurethane deposited was 4% to fabric weight. after that,
The pile surface was polished again to produce the final product.

Compared to conventional products, the back side of the resulting product is covered with short fibers, so it has a natural leather-like appearance, and a large number of fine fibers form downy hair at the base of the pile. This pile product has excellent thickness and elasticity, and has the ability to flutter in the breeze, making it an authentic animal hair-like pile fabric product that has a more luxurious feel than conventional products. Example 2 Dry acrylic raw cotton, 15 denier x 51 rolls, 8 denier x 51
Using wn and wet acrylic high shrinkage raw cotton 3 denier x 32 cilantro, fabric weight is 500q by normal high pile manufacturing method.
/Wll pile cut length 20rf0! A high pile fabric of t was obtained.

On the back side of this high pile fabric, a web (
Yarn-dyed wet acrylic raw cotton, fineness 0.8 denier, cut length 36 order, basis weight 60 y/d) were placed, and liquid jet treatment was performed three times in total using the same method as in Example 1, resulting in a web of 180 d/d. After intertwining and penetrating the high pile fabric, it was dried in a tenter.

After the pile surface of this high pile was separated, only the tips of the pile were discharge-printed using a roller printing machine to obtain an animal hair-like color tone. Furthermore, a water-dispersible polyurethane resin was applied from the back side using a roll coater method, and then heat treatment was performed.

The amount of urethane deposited was 6% versus the amount of fabric. After buffing the back side of the product using a buffing machine, the pile side was removed and polished to give a final product. The resulting product has long and short hairs, the hue changes three-dimensionally, fine fibers are densely grown as downy hair at the base of the hairs, and the back side has a very suede-like appearance. It was a pile fabric product with a luxurious animal hair feel.

[Brief explanation of drawings]

Figure 1 is a partial longitudinal side view of a natural animal hair product, Figure 2 is a
FIG. 3 is a partially longitudinal side view of a conventionally known long and short pile fabric, and FIG. 3 is a partially longitudinal side view of an animal hair-like pile fabric according to the present invention. In FIGS. 1 to 3, 1 is prickly hair, 2 is downy hair, 3 is a skin layer, 4, 4'' is a ground warp, 5 is a ground weft, 6 is a pile yarn, 7 is a short pile that constitutes this pile yarn, 8 is a long pile that constitutes a pile yarn, 9 is a base fabric, 10 is an ultrafine fiber.

Claims (1)

[Claims] 1 After overlapping a sheet made of short fibers with a single fiber fineness of 0.8 to 3 deniers on the back side of a synthetic fiber pile fabric,
By applying a liquid stream sprayed from a nozzle at a pressure of 5 to 100 kg/cm^2 to the sheet surface, the short fibers constituting the sheet and the fibers constituting the base fabric of the synthetic fiber pile fabric are entangled, and the short fibers constituting the sheet are A method for producing an animal hair-like pile fabric, which comprises penetrating a part of the fabric to the pile side to form downy hair-like fuzz.