JPH0423024B2 - - Google Patents

Description

Detailed Description of the Invention (Field of Industrial Application) The present invention relates to a method for processing a fiber structure having a pile, and more specifically, a method for forming a raised pile in which the pile is uniformly raised, heat set, and then shaped. Regarding.

(Prior Art) Fiber structures having standing piles such as cut pile and loop pile are known as carpets, artificial fur, and the like. It goes without saying that it is desirable for these raised products to have a uniform pile, but especially for artificial fur with long piles, it is important for quality that the pile stands evenly and faces in a certain direction without bending. This is an important issue.

However, when a fiber structure with piles is subjected to post-processing such as post-dying, texture finishing, water-repellent finishing, stain-proofing finishing, etc., the pile is twisted or turned upside down during the processing and becomes disordered, so the uniformity cannot be achieved. No piloerection product is obtained.

Conventionally, a device and a method for aligning and setting the piles of a fiber structure having piles have been disclosed in Japanese Patent Application Laid-Open No. 1986-
Publication No. 15539, Special Publication No. 61-22061, Special Publication No. 1983
-43580 is known, but it does not disclose shaping the pile in a predetermined direction or angle. Other known devices for laying piles in a certain direction include irons, pantexes, thermal calendars, polishers, etc.; I haven't been able to do it.

(Problem to be solved by the invention) As mentioned above, in fiber structures with piles, especially artificial fur with long piles, it is important to shape the hair in a uniform direction and at a uniform angle while keeping the hair upright. However, in view of the fact that no good special method is known, the present invention heat sets the piles of a fiber structure having piles in a uniformly standing state, and then heat sets them in one direction at a uniform angle. The purpose is to provide a method for setting types.

(Means for Solving the Problems) The present invention involves attaching a napped fiber structure to the circumferential surface of a cylindrical rotating body, rotating it, applying a centrifugal force of 50 G or more to the bristles tip, heat setting, and then pouring a liquid into the structure. A napped fiber structure characterized by being applied to the napped hair and shaped in one direction by combing under low speed rotation, and then heat set again under low speed rotation that applies centrifugal force of 0.5 to 20 G to the ends of the hair. This relates to a molding processing method.

The napped fiber structure applied to the present invention may be any fiber structure having napped fibers, and either one in which the napped fibers are made of the same fiber with a uniform length, or one in which the napped fibers are made of a plurality of fibers with different lengths. But that's fine. In particular, those having so-called prickly hair and fluff are more preferable. The length of the piloerection is 5 to 80 mm, the density of the piloerection is 3,
Particularly preferred are napped fiber structures of 000 to 20,000 fibers/cm ² .

The cylindrical rotating body to which the napped fiber structure is attached is not particularly limited, but it must have a diameter and a rotational speed that can apply a centrifugal force of 50 G or more to the tips of the hair when it rotates.

The napped fiber structure is attached to the circumferential surface of a cylindrical rotating body and rotated, and is generally heat set at a temperature of 100° C. or higher while being subjected to a centrifugal force of 50 G or more, preferably 70 G or more. Heat setting is usually carried out at 100 to 230°C, preferably 130 to 180°C with wet heat, and usually 150 to 250°C, preferably 160 to 200°C with dry heat.

Heatset time varies depending on temperature, but is usually
This is carried out for about 10 to 60 minutes, preferably about 20 to 40 minutes.
Heat setting is performed, for example, by cooling the pile while continuing rotation after heating to complete the setting, thereby obtaining a napped fiber structure in which the napped fibers are uniformly upright.

Next, the napped fiber structure is shaped in one direction. Shaping can be done uniformly by applying a liquid such as water to the nape and combing with a comb-like member under low speed rotation using the cylindrical rotating body. Further, the liquid may contain components such as a water repellent, an antifouling agent, a flame retardant, and a softener.

Rotate the heat set after laying down the piloerection.
Perform this while applying a low centrifugal force of about 0.5 to 20G.

Heat treatment is usually 120~200℃, preferably 160~
Perform at 180℃ for about 10 to 60 minutes.

During such heat setting, it is possible to control the upright angle of the fluff by adjusting the rotation speed. For example, if a centrifugal force of about 3 to 6 G is applied,
A raised product with an upright angle of about 45° to 60° is obtained and has an appearance similar to natural fur.

(Effects of the Invention) In the present invention, various treatments such as dyeing can be applied to raised products, especially artificial fur with long piles, and even if the pile becomes disordered as a result, by implementing the present method, it is possible to perform various treatments such as dyeing. It is possible to set and shape the product at a uniform angle in the direction, and it is extremely useful for obtaining high-quality napped products.

(Example) Example 1 The base fabric consists of weft polyethylene terephthalate (PET) staple No. 63 double yarn, warp PET staple No. 63 double yarn, and the pile yarn is PET150d/144
The tip of the pile of a pile fabric made of Panlon yarn and PET130d/3 mixed yarn was
A tapered pile fabric was prepared using an alkaline solution according to the method described in Publication No. 45788. The length of the pile corresponding to the stinging hair is 23 mm, and the density of the standing hair is
It was 8000 pieces/ ^cm2 .

This pile fabric was dyed with a dye solution of Dianix Yellow U-SE 0.024 owf 〃 Orange U-SE 0.192 owf 〃 Red KU-SE 0.036 owf 〃 NavyBlue U-SE 0.09 owf at a temperature of 125°C for 60 minutes, followed by alkaline reduction washing. (Temperature: 70°C x 20 minutes) The pile of the pile fabric was disordered, and the product value was low if left as it was.

Therefore, this pile was fixed to a hollow cylindrical drum with a diameter of 50 cm and a length of 150 cm. The width of the cylindrical drum is
It is housed in an airtight box-shaped container measuring 1800 cm, depth 1000 cm, and height 1500 cm. 100G by rotating the cylinder
centrifugal force was applied to the pile. Then, it continued to rotate for 20 minutes while continuously blowing dry hot air at 200℃, then after blowing room temperature air for 15 minutes while rotating, water was poured from the top under low speed rotation of 0.1G in the direction of rotation. Lay the hair in the fluttering direction and comb it, continue to rotate at 4G for 10 minutes while continuously blowing dry heated air at 180℃ again, blow room temperature air for 15 minutes while continuing to rotate, then stop rotating and pile. I took out the fabric.

The palils of the pile fabric had no bends at all, were rotated in opposite directions at a uniform angle, and were shaped to look like long piles, which were shiny and corresponded to prickly hair, combed in an orderly manner. Even when a small amount of external force was applied, the hairs remained upright and recovered to their original state of uniform direction and uniform angle. Therefore, this pile fabric has high product value as artificial fur.

Comparative example 1 Pile length 23mm used in Example 1, nap density 8000
A woven fabric with a tapered tip of 1/cm ² was dyed in the same manner as in Example 1 and washed by alkali reduction.

Next, it was attached to a hollow cylindrical drum similar to that in Example 1, and first, a centrifugal force of 100G was applied and rotation was continued at 200℃ for 20 minutes, and air at room temperature was blown into the drum while it continued to rotate.
After processing for 15 minutes, rotation was continued at 4G for 10 minutes while blowing dry heated air at 180°C, room temperature air was blown for 15 minutes, and then the rotation was stopped and the pile fabric was taken out.

In the resulting pile fabric, the piles had large bends, and the inclination angle of each pile was not constant, making it impossible to measure. Furthermore, the gloss became non-uniform, resulting in a low-quality molded product.

Comparative Example 2 Processing was carried out in exactly the same manner as in Example 1, except that the centrifugal force in the final heat treatment at 180°C for 10 minutes was changed from 4G to 10G.

The resulting pile fabric had little bending of the pile, but the inclination angle was around 75°, the prickles were too high, and the luster was uneven.

Claims (1)

[Scope of Claims] 1. A napped fiber structure is attached to the circumferential surface of a cylindrical rotating body, rotated, and heat set while applying a centrifugal force of 50 G or more to the bristles, and then at a low speed while applying a liquid to the napped bristles. A method for shaping a napped fiber structure, which comprises shaping in one direction by combing under rotation, and then heat-setting again under low-speed rotation while applying a centrifugal force of 0.5 to 20 G to the ends of the hair. 2. The method according to claim 1, wherein the napped fiber structure has a napped length of 5 to 80 mm and a napped density of 3,000 to 20,000 pieces/cm ² . 3. The method according to claim 1, wherein heat setting is performed at 100°C or higher. 4. The method according to claim 1, wherein the heat setting is performed by a heating treatment under rotation followed by a cooling treatment under rotation.