JPH0319928A - Raised cloth - Google Patents

Abstract

PURPOSE:To obtain the subject product such as fleecy jersey much improved in touch and performance with gigging stage omitted, homogeneous and in creased gigging by using open end spun yarn having a specific twisting number as a gigging yarn. CONSTITUTION:Open-end spun yarns having 15 to 90 of twisting index alpha accord ing to the equation: alpha=T/(Nm)<1/2> (Nm = metric count; T is twisting count per meter) are used as a gigging yarn to produce the subject product. The open-end spun yarn is preferably produced by combination of air twisting with swirling flow, because of its soft touch and gigging properties.

Description

[Detailed Description of the Invention] (Industrial Application Field) In recent years, raised fabrics have been used in a wide variety of applications and types.
High performance and various performances are required. The present invention relates to a spun yarn for raising this raised fabric. (Prior Art and Problems) Conventionally, open-end spun yarns used for napping fabrics generally have a twist coefficient α of 120 or more.

Generally, improvements in the performance, texture, and diversity of raised fabrics are achieved by changing the conditions during the raising process. For example, for fleece products in which spun yarn is knitted in piles, and the pile portion of the fabric is sorted, cut, and raised using a raising machine with clothing, etc., the raising conditions such as the contact pressure of the clothing and the number of times of raising are adjusted as appropriate. Generally, the hair is selected to increase the napping property or stabilize the napping condition. However, if excessive force is applied to raise the nap in order to increase its napping properties, holes or scratches may occur in the fabric itself, the dimensions of the fabric may become unstable, or the napping state may become partially unstable. Become. In addition, for adhesive interlining, which is used by inserting spun yarn into the weft of tricot knitting to make a fabric, brushing it, and then applying a thermoplastic resin adhesive, we have investigated the raising conditions, etc. Improves agent seepage, adhesive strength, elasticity, and flexibility.

However, since the raising conditions vary greatly depending on the structural elements of the raised fabric, such as the material, basis weight, etc., a great level of skill is required. Therefore, there is a need for a fabric with excellent napping properties that does not require much consideration of napping conditions. (Means for Solving the Problems) In order to solve these problems, the present inventors have conducted intensive studies focusing on napping yarns, and as a result, have arrived at the present invention. That is, the present invention is; In a raised fabric, the twist coefficient α of the raised yarn is 1.
A raised fabric characterized by using oven-end spun yarn of 5 to 90. Here, the twist coefficient α is determined by the following formula. α-T/5; ...(1
) (Nm: metric count, T: number of twists per meter.

) Here, if the twist coefficient α is less than 15, the napping property is considered to be extremely good, but the spinnability during spinning is also markedly reduced, and the strength of the spun yarn is also low, making it difficult to shape the fabric. From an industrial standpoint, the processability of the material is also unfavorable, as it impairs stability. Furthermore, the relationship between the twist coefficient α and the yarn diameter D of the spun yarn of the present invention is as shown in FIG. If it is less than 15, it will not be possible to stably obtain a spun yarn, and as the twist coefficient is increased, the yarn diameter will become smaller. This tendency becomes noticeable when α is between 45 and 75, and when α exceeds 90, this tendency becomes smaller again. In other words, the ease of movement between the individual filaments that control the spun yarn becomes more likely to be restricted as the gaps between the individual filaments become smaller. However, the yarn diameter used here is one in which the number of single fiber cross sections included exceeds 80% of the total number of single fiber cross sections that make up the spinning system in a cross section perpendicular to the yarn axis of the spun yarn. The diameter of the smallest circle among the circles with the smallest integer number, that is, the smallest integer number in which the number of single fiber cross sections that do not intersect, are in contact with, or include the circumference exceeds 80%, is determined by this spinning process. The diameter of the thread is D.

The single fibers used in the present invention include polyester, acrylic,
Combined woven fibers such as nylon, rayon, cupro, etc.
It may be any natural fiber such as cotton or wool, or a blend thereof, and is intended for use as a raw material for ordinary open-end spinning.

The present invention also provides fleece-lined jersey, adhesive interlining, woven and raised fabrics, etc.
Includes everything that raises fabric. In addition, as an open-end spun yarn, as in Example 2 described later, a yarn obtained by open-end spinning in combination with air twisting using an air swirl flow is better due to its soft texture, volume, napping properties, etc. Especially preferred. Examples will be described in detail below, but these do not limit the scope of the present invention.

Example 1 In FIG. 1, the short fiber group l to be supplied is
The friction coefficient is increased by the roughness of the surface of the friction member 4 and the shape of the grooves, which are deposited and focused on the fibers, pulled out as a fiber bundle 3, and twisted, thereby enabling spinning with a low number of twists. The twisted yarn 5 is taken up by a pair of rolls 6 and rolled up.

The short fiber group 1 used here is acrylic hewei fiber, 1
．． 5 denier, single fiber length 3B (mm), 1/18
Spin a yarn of Nm. The twist coefficient α of the spun yarn is α=9
It is 0. A second electron micrograph of the side surface of the spun yarn
This is shown in figure (a). Here, FIG. 2(b) is a side electron micrograph of a conventional open-end spun yarn spun with a twist coefficient α=l10. Using these spun yarns in the pile part, jersey pile knitting was carried out by cross-knitting with the same spun yarn of 1/5 2 (Nm), and the pile part was raised and raised. Table 1 shows the results. Shown below.

By using the yarn of the present invention, the raising process could be omitted and the raising process could be made uniform, and the volume of the product after raising could be increased. Further, in the conventional system, if the number of times of raising is further increased, the raising progresses, but holes may be formed in the fabric or the raised state may be more uneven.

Example 2 In FIG.
When the fibers are deposited and bundled, pulled out as a fiber bundle 3, and twisted by the friction member 4, the air swirling flow obtained from the air twisting nozzle hole 7 is applied to the yarn after passing through the friction member 4. It is given within the nozzle 8. The rotational direction of this swirling flow is opposite to the rotational direction of the rotating spinning chamber, and it facilitates the twisting action between the friction member 4 and the fiber converging section 9 of the rotating spinning chamber, making it possible to spin with a low number of twists. shall be.

The short fibers used here are acrylic composite fibers.1.
2 denier, single fiber length 38 (mm), 1/64N
Spin m yarns. The twist coefficient α of the spun yarn is α-70
It is.

A side electron micrograph of the spun yarn is shown in FIG. 4(a). Here, FIG. 4(b) is a side electron micrograph of a conventional open-end spun yarn spun with a twist coefficient α-115.

These spun yarns are inserted as weft yarns into a tricot knitting of nylon filaments, made into a fabric, raised, and then coated with a thermoplastic synthetic resin adhesive to form an adhesive interlining.The performance comparison results are shown below. It is shown in Table 2. Here, the performance test as an adhesive interlining is a comparison between the same woven fabric and each adhesive interlining, which are bonded together by heating and pressurizing.

The purpose of raising this fabric is to satisfy its performance as an adhesive interlining, and the test results show that improved napping properties lead to improved performance as an adhesive interlining. Regarding the raising property, by using the yarn of the present invention,
It is possible to omit the napping process, make it more uniform, and improve the amount of napping.
It is possible to further improve the performance of the adhesive interlining.

Example 3 In addition, in Example 2, the twist coefficient α was set to α-15, 45
, 90, and 105, the results of a similar investigation are shown in Table 3 below.

As described above, when α is within the range of 15 to 90, excellent workability, performance, texture, etc. can be obtained.

(Effects of the Invention) By using the open-end spun yarn with a specific number of twists according to the present invention as the raising yarn of the raising fabric, the raising property of the fabric, that is, the omission of the raising process, the homogenization of the raised state, The amount of napping can be improved, and the feel and performance required of the napping fabric can be further improved.

[Brief explanation of the drawing]

FIG. 1 shows an embodiment of an oven-end spinning device for spinning the spun yarn of the present invention. FIG. 2 shows a side electron micrograph (a) of the shape of the yarn spun in Example 1 and a side electron micrograph (b) of the shape of the conventional yarn. FIG. 3 shows another embodiment of an open-end spinning device for spinning the spun yarn of the present invention. The figure below shows Example 2''C spun j, shape G of the two yarns, and two side electrons'-/l-microscope TJ: true (,]
) and 4jC Figure 5 shows side electron micrographs (b) of the shapes of the spun yarns of the present invention.
&) and the thread diameter (D). 1. Short fiber string group 26 rotating spinning chamber 3. 2Z-sen Hito 4. Friction part shrine 5. Spun yarn 6,--pair take-off l-2-l7. Air twisting nozzle hole8. Air twisting nozzle9. Fiber Hayato of the same conversion thread room (4ii Fig. 2 (a) (l)) 8 Mokku Ka thread nosuru Fig. 3 younger brother 4 Fig. (b) No. 4 Diagram 5 of a thread with natural constant c4M thread diameter D2

Claims (1)

[Scope of Claims] A raised fabric characterized in that the raised yarn is made of open-end spun yarn having a twist coefficient α expressed by the following formula (1) of 15 to 90. . Here, the twist coefficient α is determined by the following equation. α=T/√Nm...(1) (Nm: metric count, T: number of twists per meter.)