JPS63126941A - Raised fabric - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION (Industrial Application Field) The present invention relates to a raised fabric having upright cut piles made of polyester filaments, and is suitable for use as interior materials and rear tires of passenger cars.

(Prior art) In order to soften the texture of a raised fabric having cut piles in an upright shape, if a pile yarn made of fine denier filaments with a fineness of 1.5 denier or less is used, the pile becomes softer. In order to prevent this, the multifilament yarn consisting of filaments with a large fineness and the multifilament yarn consisting of filaments with a small fineness are pulled together, combined and twisted, or the yarn is made so that they are not lopsided. The fibers are mixed and used for pile yarn. It is also known to knit and weave a multifilament yarn consisting of filaments with large fineness as a pile yarn, and to chemically thin the tips of the filaments forming the cut pile.

(Problems to be Solved by the Invention) When the filaments I~ with different finenesses are mixed and used for pile yarn, the above mixture can be applied to the two types of multifilament yarns by pulling them together, twisting them together, or mixing them without any deviation. Since this is done by filament, two types of filaments are used in pulling and twisting.
There was a problem in that a soft texture could not be obtained because the filaments of the two types of filament l- stood up in groups and the tips of the two types were at the same height. In addition, in the case of mixed fibers that do not have unevenness, there is a problem that the pile sag. On the other hand, when the tips of cut piles are made thinner by chemical treatment, there is a problem in that the processing is labor-intensive and the productivity is low.

The present invention provides a raised fabric that has an upright cut pile, is difficult to flatten, has a soft texture, and is easy to manufacture.

(Means for Solving the Problems) The raised fabric of the present invention is a raised fabric in which a pile is formed of polyester multifilament yarn, in which the polyester multifilament yarn has at least two types of filaments having different finenesses. The filaments 1-, each having a small fineness, are arranged so as to surround the filament 1-, which has a large fineness at the center, and the tip of the filament 1-, which has a small fineness, is the tip of the filament 1-, which has a large fineness. It is characterized by having unevenness formed at the tip of the pile which protrudes higher than the pile.

(Function) The polyester filaments 1- with small fineness are arranged so as to surround the polyester filaments 1- with large fineness in the center 1 and the outer periphery of the polyester filaments 1- with large fineness. Sagging is prevented. However, since only the polyester filament with a small fineness is exposed on the pile surface, a soft texture can be obtained. In particular, by making the tip of the polyester filament 1 with a small fineness protrude 0.2 to 0.8 m higher than the tip of the polyester filament 1 with a large fineness in the center, an even softer texture can be obtained. ”
Sign. In addition, the thickness of the pile yarn should be 50 to 300 deniers, the fineness of each filament constituting this pile yarn should be 0.5 to 5.0 deniers, and the fineness of thin filaments and thick filaments should be set within this range. This gives favorable results. However, if the thickness of the polyester multifilament yarn as the pile yarn is less than 50 denier, the pile tends to become flattened and the quality of the raised fabric deteriorates. On the other hand, if it exceeds 300 denier, a low-gauge knitting machine must be used, and the nap distance becomes large, exposing the ground yarn and resulting in a poor appearance. Furthermore, if the fineness of the thinner polyester filament is less than 0.5 denier, sagging is likely to occur, while the fineness of the thicker polyester filament 1 to 1 is less than 5.5 denier.
If it exceeds 0 denier, the texture will be rough and hard. In addition, 2
The fineness of the seed filament is 2 to 5 deniers for the thicker one.
Preferably, the thinner one is in the range of 0.5-3 denier. In addition, the preferred composition ratio of the thinner polyester filament and the thicker polyester filament is 4-278 to 8/2 in the case of two components, and if the number of thinner polyester filaments is less than this, the texture will be poor. It becomes hard, and when there is a lot of it, it tends to sag. The cross-sectional shapes of the small filaments 1 to 1- and the large filaments 1- may be arbitrary, and may be the same or different.

To exemplify the method for manufacturing the raised fabric of this invention, a large diameter discharge hole is arranged in the center of the nozzle, and a narrow diameter discharge hole is arranged around the outer periphery, and a high shrinkage material is discharged from the central thick discharge hole. Polyester filament 1- is spun, and low-shrinkage polyester filament is spun out from the narrow discharge hole on the outer periphery.
This is drawn to make a pile yarn, knitted and woven to form a pile, and then heat treated to make the thick high-shrinkage polyester filament 1- in the center shrink more than the thin low-shrinkage polyester filament around the periphery. Sa(ru. Matata 1'l
ll: A thick high-shrinkage polynisdel multifilament yarn and a thin low-shrinkage polyester multifilament yarn are separately spun, and the low-shrinkage polyester multifilament yarn is electrospreading method L-; Yotsute web. The fibers may be spread out into a shape, bundled with a highly shrinkable polyester multifilament yarn layered in the center thereof, knitted using this as a pile yarn, and heat treated.

(Example) Fig. 1 shows a cross-sectional view of an example of a raised fabric, where 1 indicates a ground texture;
2 is a pile, and pile 2 is, as shown in FIG.
It is composed of two types: a thick filament 2a in the center and a thin filament 2b around it, and from the tip of the thick filament 2a to the thin filament 2b.
The tip protrudes slightly upward. Figure 3 shows pile 3
Three types of filaments 3a, 3b, 3 with different fineness
An example configured with c is shown below.

The polymer was spun from a spinning nozzle having 18 discharge holes in the center and 32 discharge holes arranged around it.

A polyester copolymerized with 10 mol% isophthalic acid is spun from the central discharge hole, and a polyester having ethylene terephthalate as a repeating unit is spun from the surrounding discharge holes, as shown in Figure 2. A multifilament yarn of 3.7 denier x 18 filaments with a circumference of 1 denier x 32 filaments and a total of 100 denier 50 filaments was produced. Next, this multifilament yarn was used as a pile yarn, and a 100 denier 36 filament polyester multifilament yarn was used as a base yarn.
Density 4 using Karl Mayer's double Russell machine.
A double knitted fabric of 4 courses x 22 wales was knitted, the pile yarn was cut in the middle of the two knitted fabrics to separate them, and the obtained gray fabric was brushed and preset. Next, high-temperature dyeing (130'CX 60 minutes) was applied, followed by drying, finishing setting, and brushing treatment to obtain the raised fabric of the example.

On the other hand, except for using a twisted yarn (number of twists: 100 twists/m) of a polyester multifilament yarn of 50 denier 36 filaments and a polyester multifilament yarn of 50 denier 12 filaments as the pile yarn, the rest was the same as in the above example. A raised fabric of a comparative example was obtained.

When the performance of the raised fabrics of the above-mentioned Examples and Comparative Examples was compared, the Examples had almost no pile settling, while the Comparative Examples had considerably noticeable pile settling. Furthermore, while the Examples had an excellent soft feel, the Comparative Examples had no soft feel. Note that the difference in height between the tip of the thin polyester filament and the tip of the thick polyester filament was 0.5 mm.

(Effects of the Invention) In this invention, a polyester filament with a thicker fineness is located at the center of a cut pile formed by one polyester multifilament yarn, and a polyester filament with a thinner fineness is located at the outer periphery. Since the tips of the thin polyester filaments are higher than the thicker polyester filaments in the center, the texture is soft and the pile does not sag.

[Brief explanation of the drawing]

=8- Fig. 1 is a sectional view of an embodiment of the present invention, Fig. 2 is a sectional view taken along line nn in Fig. 1, and Fig. 3 is a sectional view of a pile of another embodiment. 1; Ground texture, 2.3: Pile, 2a, 2b, 3a, 3b
, 3c: filament. Patent applicant Toyobo Co., Ltd. Agent Patent attorney Takeshi Sakano Fuyoshi 1) Tsukasa Ryo

Claims (1)

[Scope of Claims] [1] In a raised fabric in which cut piles are formed using polyester multifilament yarn, the polyester multifilament yarn is composed of at least two types of filaments having different finenesses, and the filament with a smaller fineness has a higher fineness. A raised pile characterized by being arranged so as to surround a large filament, and in which the tip of a filament with a small fineness protrudes higher than the tip of a filament with a large fineness, and unevenness is formed on the tip surface of the cut pile. fabric. [2] A claim in which the polyester multifilament yarn forming the pile has a thickness of 50 to 300 deniers, and the individual filaments constituting this polyester multifilament yarn have a fineness of 0.5 to 5.0 deniers. The raised fabric described in paragraph 1.