JPS587734B2 - How to get started - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a method for producing Dennitt-style bent yarn.

Conventionally, de-knit yarns have been made using triacetate yarns covered with plastic fiber yarns such as nylon, which are once knitted and set in a knitting machine, and then loosened to obtain yarns.

For this reason, denite yarn could be used to create bulky knitted fabrics with interesting textures, but its production was extremely labor-intensive (1), resulting in low work efficiency and high costs, which limited its range of use.

The purpose of the present invention is to eliminate the time-consuming processes of knitting and unraveling, and to obtain a yarn having a texture similar to that of de-knit yarn in an extremely simple manner. It is intended to form Dennitt-like bends in the fibers, and has the strength to form a shape with a core yarn made of thermoplastic fiber yarn or non-thermoplastic fiber yarn covered with thermoplastic fiber yarn. Water-soluble P. V. The A fibers are polished to a density that bends the core yarn, and water-soluble P. V. The A fiber is dissolved and at the same time the core yarn is mixed with the water-soluble P. V. It is characterized by fixed refraction, similar to the state in which A fibers are curled.

In the method of the present invention, a thermoplastic fiber yarn or a non-thermoplastic fiber yarn is used as a core yarn, and water-soluble P. V. It consists of a first step in which the A fibers are reeled from any left or right direction, and a second step in which the reeled threads are set.This first step is carried out using a hollow spindle, which has the advantage of extremely high efficiency production. However, the second step is also carried out in the same manner as the conventional setting or dyeing process, and Dennit style bent yarn can be obtained without any special process.

The most distinctive feature of the method of the present invention is that water-soluble P. V. A fiber is used as a core yarn, and water-soluble P. V. The water-soluble P. V. A fiber is dissolved to leave a fixed bend in the core yarn.

The method of the present invention will be specifically explained below using Examples.

Example 1 Triacetate yarn (1) 150 denier is covered with nylon yarn (2) 15 denier in the left or right direction at 300 T/M to prevent fuzzing, and this is inserted as core yarn A through the hollow spindle. A water-soluble P. V. A fiber B of 28 denier is drawn out and twisted into the core yarn A at 800 T/M in the left or right direction.

Put the thread into a skein and vacuum set at 120°C for 20 minutes.

At that time, water-soluble P. V. A fiber B is dissolved, but core yarn A is water-soluble P. V. As the fibers A and B contract while remaining in the curled state, they become compressed and bent, and are set there.

For this reason, the Dennitt-like refraction of the resulting fibers is fixed.

This bent yarn had about 60% of the shrinkage of core system A in its shrunken state.

Example 2 A water-soluble P.I. V. A fiber B of 28 denier is drawn out and twisted into a core thread A at 800 T/M in any left or right direction.

This thread is placed in a skein and vacuum set at 120°C for 20 minutes.

As a result, Dennitt-like bent yarn was obtained.

Example 3 A bobbin in which wool spun yarn (1) No. 48 is covered with nylon yarn (2) 15 denier in the right direction at 300 T/M, and this is inserted through a hollow spindle as core yarn A and inserted into the hollow spindle. Water-soluble P. V. A fiber B 28 denier is pulled out and twisted to the right at 800 T/M to the core yarn A.

Take this thread in the wind and vacuum set it at 120°C for 20 minutes.

This yielded Yadenit style bent yarn. Example 4 Triacetate processed yarn (1) 100 denier, nylon yarn (2) 15 denier, 300 T/M in the left direction of the umbrella
The water-soluble P.I. V. Pull out A fiber B28 denier and make core yarn A
Then, rotate it to the right at 800T/M.

Take this thread in the wind and vacuum set it at 120°C for 20 minutes.

As a result, Dennitt-like bent yarn was obtained.

Example 5 A 100 denier triacetate thread was inserted into a hollow spindle as a core A, and wound around a bobbin fitted with the hollow spindle. V. Pull out the A fiber B28 denier and spin it to the right at 800 T/M to the core yarn A.

This yarn was placed in a skein and subjected to vacuum setting at 120° C. for 20 minutes, thereby obtaining a Dennit bent yarn.

In addition to the above, similar effects were obtained with wool, acetate, woolly processed yarn, rayon, spun yarn, holi yarn, ester yarn, etc.

However, in this case, the set temperature may be changed.

Also, water-soluble P. V. If the stiffness of the A fiber is increased, the bending pitch of the core yarn becomes finer, 1 mm at 600T/M, and 1mm at 800T/M.
A pitch of 0.5 mm was obtained with M.

As described above, according to the method of the present invention, water-soluble P.I. V. A Dennitt-like bent yarn can be manufactured by the process of spinning the A fiber into a core yarn covered with thermoplastic fiber or thermoplastic birch fiber, and the process of setting this yarn, and can be manufactured extremely easily and with high efficiency.

[Brief explanation of drawings]

FIG. 1 is a partially enlarged view of the embodiment of the present invention before it is rolled, FIG. 2 is a partially enlarged view of the same in the pumped state, and FIG. 3 is a partially enlarged view of the same in the completed state.

Claims (1)

[Claims] 1. The thermoplastic fiber yarn has a non-thermoplastic fiber yarn covered with a thermoplastic fiber yarn as a core yarn, and a water-soluble P.I. V. The A fibers are polished to a density that bends the core yarn, and water-soluble P.
V. The A fiber is dissolved and at the same time the core yarn is mixed with the water-soluble P. V
．． A method for producing Dennitt-style refracted yarn, characterized in that the refraction is fixed as in the refracted state of A fibers.