JPH0653989B2 - Manufacturing method of natural fur-finished hair products - Google Patents

Description

Description: TECHNICAL FIELD The present invention relates to a method for producing a napped product made of synthetic fibers, particularly a napped product having a natural fur-like appearance and feel.

[Conventional technology and its problems]

As a method for artificially producing a napped product similar to natural fur, that is, a napped product having long and thick sting hair and short and thin fluff, a method described in Japanese Patent Publication No. 48-4910 is known. The method uses two or more types of polyester fibers having different solubilities for alkali as piles,
It is characterized in that the tip portion of the pile is treated with alkali. Specifically, a pile fabric having a pile containing thin polyester filaments for fluff and thick polyester filaments for fluff (coarse hairs) is dipped in an alkaline bath with the pile side facing down, and only the pile tip is 10 mm. Dip only the tip 2 mm. However, according to this method, it is difficult to make the length of the pile entering the alkaline bath the same at the edge portion and the central portion of the pile fabric. The product feels bad because it penetrates to the root and sticks the pile.

JP-A-55-57069 discloses 1000-15000 cps containing a solvent or a decomposing agent on the napped surface of a fabric having napped fibers composed of two or more kinds of synthetic fibers having different dissolution or hydrolysis rates.
The method of forming a fluff and a sting at the same time by applying the viscous treatment agent of the above is disclosed. This method is described in JP-B-48-491.
Although it is said that the drawbacks of the method described in Japanese Patent No. 0 are solved,
There is a problem in that not only the tip of the sting hair is sharpened but also the central portion is not a little melted unevenly and becomes thin, or the surface thereof is deteriorated.

In Japanese Examined Patent Publication No. 59-45788, a napped fiber structure is attached to a rotating cylinder to rotate the nap to raise the nap, while a solvent is placed inside a similarly rotated cylinder shell on the outside of the nap to make it round by centrifugal force. It describes a method of forming a liquid surface and contacting it with the napped tip while controlling the liquid surface height to form fluff and taper the pricking tip. In this way, fluff and especially stings are formed uniformly and cleanly, but the length of the hair is so uniform that it is rather unnatural and has the drawback of being somewhat different from the appearance and feel of natural fur. Yes, and the structure and operation of the manufacturing equipment are complicated.

[Problems to be Solved by the Invention]

An object of the present invention is to solve the above-mentioned drawbacks of the conventional method for producing artificial fur and to provide a method for producing a napped product having an appearance and feel more similar to that of natural fur.

[Means for Solving the Problems]

In the method for producing a napped product, the present inventor uses a solvent for dissolving naps to be fluff among the above-mentioned synthetic fiber naps on the nap side of a napped fabric having two or more kinds of synthetic fiber naps having different dissolution rates in a solvent Applying a low-viscosity dissolution treatment liquid containing, to form a fluff by dissolving and cutting the naps, and then rotating the holder with the napped fabric attached to the holder with the nap side facing outward. To raise naps to be pierced, and then to the napped side of the napped fabric, a high-viscosity dissolution treatment solution containing a solvent that dissolves naps to be pierced is applied, and the tip of the napped is tapered. It was found that a napped product having an appearance and feel very close to that of natural fur can be obtained by a method including:

Here, the napped cloth itself having two or more kinds of synthetic fiber naps having different dissolution rates in a solvent, which should become sting and fluff, can be a conventionally known one in the production of artificial fur.

A synthetic fiber having a different dissolution rate in a solvent is a group of synthetic fibers having different constituent polymers, single yarn fineness, and / or surface / sectional shape. Therefore, when the fiber is treated with the solvent, substantially only the specific synthetic fiber can be selectively dissolved due to the difference in the dissolution rate. As the synthetic fiber, for example, polyester fiber, polyamide fiber, polyacrylonitrile fiber can be used, and polyester fiber is particularly preferable from the viewpoint of feeling and processability. In order to make the dissolution rate different by using the same type of polymer, the single yarn fineness can be largely different, for example, several times to several tens times. When the same type of polymer is used, it is preferable to use a relatively mild solvent for fluff formation and a relatively strong solvent for tapering the stabbing naps raised according to the present invention. When using a different type of polymer, the napped hair of a specific polymer can be preferentially dissolved by using a solvent for the specific polymer only.

Examples of the combination of different polymers include polyethylene terephthalate and polybutylene terephthalate, and cationic dyeable polyethylene terephthalate and polybutylene terephthalate.

The napped fabric used in the present invention may be any of woven fabric, knitted fabric, and non-woven fabric. The napped length, constituent polymer, etc. are not particularly limited, but the napped length is 5 to 80 mm, and the napped density is 3000 to 20000 fibers /
cm ² is preferable. The single yarn fineness of the napped hair is preferably 15 to 60 D for fibers to be stabbed, 0.2 to 8 D for fibers to be fluff, and the ratio of the numbers of both fibers is about 25 to 40.

In the present invention, the solvent is a solvent that dissolves or hydrolyzes the synthetic fiber, and for example, sulfuric acid, hydrochloric acid, formic acid, phenol, metacresol, dimethyl sulfoxide, etc. for polyamide fiber, chlorophenol, potassium hydroxide for polyester. Especially for sodium hydroxide and acrylonitrile fibers, dimethylformamide, dimethylsulfoxide, ethylene carbonate, sulfuric acid and the like can be mentioned. Heating can optionally be applied to facilitate dissolution. For example, 130 ℃ ~ 200 ℃ 60 seconds ~ 40
Dry heat per minute, steam heat at 100 to 130 ℃ for 5 to 40 minutes or 120
Superheated steam heating at ~ 220 ° C for 5-40 minutes.

In the present invention, first, a dissolution treatment liquid containing a solvent that dissolves naps to be fluff is applied to the nap side of the fabric, and the naps are melted and cut to form fluff. The dissolution treatment liquid penetrates to some extent from the surface of the nap and cuts the nap to be fluff from the base cloth into, for example, half the length. For this reason, the dissolution treatment liquid preferably has a viscosity of 300 to 4000 cps.
At viscosities below 300 cps, the treatment liquid penetrates too deeply, resulting in fluff that is too short. On the other hand, if the viscosity is higher than 4000 cps, the penetration of the treatment liquid will be insufficient, resulting in uneven fluff. A conventional means can be used for adjusting the viscosity, and a sizing agent such as sodium alginate, sodium polyacrylate, polyvinyl alcohol and starch can be added to the solvent or the solvent solution. The processing liquid is typically applied in an amount of 500 to 3000 g / m ² . If the fluff for fluff is polyester, apply an aqueous sizing agent solution containing 15 to 25% by weight of sodium hydroxide to the fluff and apply 10 to 40 at about 100 ° C.
It is preferable to leave it for a minute.

The fluff length of the napped product obtained by the present invention is not too uniform as in the conventional case, and conversely does not have a too wide distribution, and shows an appropriate length distribution. One particularly preferred aspect for appropriately controlling the length distribution of the fluff is to attach the napped fabric to the holder, preferably a cylinder, with the nap side facing outward, to apply the dissolution treatment liquid to the nap and to make the holder high speed. It is to melt and cut the fluff for fluff while rotating and applying a centrifugal force of 2 to 15G.

After forming the fluff, washing is usually performed to remove the dissolution treatment liquid.

Next, one of the features of the method of the present invention is to raise the nap for stabbing before processing the nap for stabbing. For this purpose, attach the napped fabric to the holder with the nap side facing outwards,
The holder is rotated at a high speed to give a centrifugal force of 30 G or more, preferably 60 G or more. Preferably, the cloth is heated while rotating the holder, and after the nap is sufficiently raised, the cloth is cooled to room temperature to heat set the nap, and then the rotation of the holder is stopped. For heating, for example, dry heat at 150 to 250 ° C, 160 to 250
It can be carried out by high temperature humid heat of ℃ or steam of 100 to 150 ℃. The heating time varies depending on the temperature, but is usually 5
60 minutes.

Next, the tips of the napped naps are melted to form a taper shape.
At this time, it is one of the advantages of the method of the present invention that only the tips of the pricking naps are dissolved and the central part is not substantially dissolved. This is achieved by raising the napped naps by centrifugal force in advance as described above, and by setting the viscosity of the solution for treating punctured naps to be high. The dissolution treatment solution preferably penetrates from the napped tip portion, for example, on the average of 3 to 5 mm, and is typically applied in an amount of 100 to 1000 g / m ² . For this reason, it is preferable that the dissolution treatment liquid for standing hair for pricking has a viscosity of 1500 to 15000 cps. If it is less than 1500 cps, the dissolution treatment solution easily penetrates into the central part of the nap, while if it exceeds 1500 cps, uniform dissolution treatment becomes difficult. The viscosity can be adjusted by using a sizing agent as in the fluff dissolution treatment liquid. If the naps for stabbing are made of polyester, apply a treatment liquid containing 25 to 45% by weight of sodium hydroxide, and apply 10 to 30 at around 100 ° C.
Can be left for minutes.

The above-mentioned fluff dissolution treatment agent and stinging dissolution treatment agent can be applied by a conventional method, for example, knife coating method, various coating methods such as gravure coating method, flat screen method, and roller. Printing methods such as a screen method may be mentioned.

The napped product thus obtained is usually then washed,
Subjected to dyeing and post-processing.

It has been found that the above-described method of the present invention provides a new artificial napped product having an appropriate sting length distribution and fluff length distribution.

In the product obtained by the method described in Japanese Patent Publication No. 48-4910, the alkaline liquid permeates unevenly due to the capillary phenomenon, so that the distribution of the length of fluff and sting becomes too broad, and the appearance of natural fur, It's a different feel.
Further, in the product obtained by the method described in Japanese Examined Patent Publication No. 59-45788, the lengths of fluff and sting are too uniform, respectively, and this also gives an unnatural appearance.

If the characteristic of the napped product of the present invention is simply expressed, the fiber length distribution of each of sting and fluff is not extremely sharp,
Moreover, it is not extremely broad, and it is uniformly distributed in a relatively narrow range. There has never been an artificial napped product having such a napped distribution. Further, the tips of the stabbing hairs and the fluff are tapered, and all the naps are erected evenly in almost one direction. The napped product of the present invention having the above characteristics is excellent in that it has the appearance and feel similar to natural fur.

Hereinafter, the present invention will be further described with reference to examples. In the examples, percentages are weight percentages.

Example 1 The base fabric was made of weft polyethylene terephthalate (PET) staple No. 63 twin yarn and warp PET staple No. 63 twin yarn, and the pile yarn was PET150 d / 72f Baron yarn and PET.
A napped fabric having a pile length of 30 mm and a nap density of 8000 fibers / cm ² was prepared, which was composed of a mixed woven yarn of 130d / 3f. A low-viscosity dissolution treatment liquid having the following composition was uniformly adhered (850 g / m ² ) to the napped side of this napped cloth with a flat screen.

Sodium hydroxide 20% Nikka gum MA-39 (Trademark, Nika Chemical Industry Co., Ltd., glue, solid content 10%) 20% Neolate NCB (Trademark, Nika Chemical Industry Co., Ltd., penetrant) 2% Water 58% Viscosity 800 cps Next, the fabric was heat-treated at 102 ° C. for 30 minutes in a high temperature steamer without being dried, and then washed with water. It was observed that fine naps of 150 d / 72 f were melt-cut.

Next, the cloth was fixed to a hollow cylinder having a diameter of 50 cm and a length of 150 cm with the nap side facing outward. This hollow cylinder can be rotated by a motor, width 1800 cm, depth 1000 cm, height 15
It is stored in a box-shaped container that can be sealed at 00 cm. Rotate the hollow cylinder and apply a centrifugal force of 100 G to the napped hair while
Of air was continuously blown into the box for 20 minutes, then room temperature air was blown for 15 minutes while still spinning, and the spinning was stopped and the fabric was removed.

Next, a high-heat-dissolution treatment solution having the following composition was attached (200 g / m ² ) to the tips of the naps using a rotary screen.

Sodium hydroxide 20% Nikka gum MA-39 25% Viscosity 2200 cps The cloth was heat-treated at 130 ° C for 20 minutes in a high temperature steamer without drying, then washed with water and dried. It was observed that the tip of the stabbing nap was melted and pointed in a taper shape.

The fabric was then padded with a dye liquor to dye the fabric, combed in one direction with the needle of a comber, dried, and heat treated at 160 ° C for 20 minutes in a high temperature steamer to develop color. After reduction cleaning, soft treatment is performed,
Backing was performed, and finally cotton opening was performed by brushing.

The natural fur-finished hair product obtained has long and thick stabbed napped hair and short and thin fluff-like napped hair. Each of the fluff was not unnaturally uniform and neither excessively dissimilar, and had a fur coat that was very similar to natural fur, and the surface texture was soft and similar to that of natural fur.

Claims (5)

[Claims] 1. A method for manufacturing a napped product, wherein a napped side of a napped cloth having two or more kinds of synthetic fiber naps having different dissolution rates with respect to a solvent dissolves naps to be fluff among the synthetic fiber naps. Applying a low-viscosity dissolution treatment liquid containing, to form a fluff by dissolving and cutting the naps, and then rotating the holder with the napped fabric attached to the holder with the nap side facing outward. To raise naps to be pierced, and then to the napped side of the napped fabric, a high-viscosity dissolution treatment solution containing a solvent that dissolves naps to be pierced is applied, and the tip of the napped is tapered. A method that includes: 2. The method according to claim 1, wherein the fluff dissolution treatment liquid has a viscosity of 300 to 4000 cps, and the prickly dissolution treatment liquid has a viscosity of 1500 to 15,000 cps. 3. The process of dissolving and cutting the naps to be fluff by the dissolution treatment liquid is carried out with the napped fabric attached to the holder with the nap side facing outward and the holder being rotated in the gas phase. The method according to claim 1 or 2, including the following. 4. The step of erecting the fibers to be stabbed,
The method according to any one of claims 1 to 3, which comprises heating the cloth while rotating the holding body, and then stopping the rotation of the holding body after cooling to room temperature. 5. The two types of naps having different dissolution rates in a solvent are a polyethylene terephthalate yarn having a single yarn fineness of 0.2 to 8 denier and a polyethylene terephthalate yarn having a single yarn fineness of 15 to 60 denier. Any one of the terms
The method described in the section.