KR930011949B1 - Process for manufacturing textured mixing yarn having a differential shrinking - Google Patents

Abstract

spinning and blending the high shrinkage polyester and the low shrinkage polyester, whose difference of non-aqueous shrinkage rate is above 5 %, to obtain the differential-shrinkage composite yarn; twisting the yarn with 200-400 T/M without interlacing; sizing the yarn at 60-100 deg.C; weaving the fabric using the above yarn as a warp; primarily wet-heat relaxation treating the woven fabric at 80-100 deg.C, and secondarily wet-heat relaxation treating at 110-125 deg.C; and finally dry-heat relaxation treating at 140-1380 deg.C.

Description

Manufacturing Method of Shrinkable Composite Fabric

The present invention relates to a method for producing a bi-shrink composite yarn composed of a bi-shrink composite yarn in which a high shrink polyester fiber and a low shrink polyester fiber are mixed.

More specifically, the present invention is to increase the heat shrinkage difference in the manufacturing of the fabric of the spinning blended polyester shrink shrink composite yarn to effectively express the difference in the heat shrinkage processing, the feeling of volume, suspension (Drape), The present invention relates to a method for producing a biaxially woven composite fabric to exhibit excellent texture of natural silk such as surface irregularities.

A conventional fabric having a bishrink effect was to use bispun blended yarn.

However, since these blended yarns have to be stretched again for each of the separately drawn yarns, the process is not only cumbersome, but also difficult to obtain cedene blended yarns.

On the other hand, a method of spinning a high shrinkage component and a low shrinkage component at the time of spinning together to obtain a biaxial blended yarn in one spinning process is known.

The shrink shrink composite fabricated in this way has the advantages of excellent shrinkage effect and sedenite, but when it is made into a product, not only the problem of the conventional shrink shrink blend yarn but also the problem that the conventional shrink shrink fabric did not exist. It was.

First, since the previous blended yarn or diaxial shrinkage composite was subjected to high tension of 0.4 denier and high temperature treatment at 100 ℃ or higher in the hoisting process, the heat shrinkage difference was lowered, so it was not possible to effectively express the dead wave caused by the heat shrinkage difference during heat shrinkage processing.

In Japanese Patent Laid-Open No. 59-118005, the fusing process is omitted by providing entanglement in the manufacture of filament yarn or by giving a weak lead to the filament, but it is not easy to operate during weaving, or generates entanglement in appearance after heat shrinkage processing. Problems have been raised.

Second, when the wet heat relaxation treatment of the heat shrink processing is performed once at a high temperature of 120 ° C. or more, shrinkage occurs excessively in a short time, which causes damage to the feel and appearance of the final product.

In addition, the dry heat relaxation treatment was also performed at a high temperature of more than 180 ℃ because the touch was poor.

The present inventors maximize the heat shrinkage difference of the hydroshrink composite yarns which have a high shrinkage polyester and a low shrinkage polyester spin-mixed to effectively express the dead-difference during the heat shrinkage processing, so that the final shrinkage composites have excellent suspension, volume, and surface irregularities. Invented a method of manufacturing a fabric.

The present invention gives a non-entangled weak edge to a biaxial shrinkage composite yarn in which a high shrinkage polyester and a low shrinkage polyester are spin-mixed, and weaved by low temperature low speed weaving, followed by two-time damp heat relaxation at low and high temperatures during heat shrinkage processing. It is a method for producing a biaxially woven composite fabric characterized in that it is produced by treatment and dry heat relaxation treatment for a long time at low temperature.

When explaining the present invention in more detail, the present invention is prepared by spinning a high shrinkage polyester and a general polyester with a high shrinkage by the copolymerization component, the polyester shrinkage difference of 5% or more after 30 minutes of non-aqueous treatment Blessed yarn is given a weak twist of 200 ~ 400T / M in the non-entangled state, and the yarn which is called at a temperature of 60 ~ 100 ℃ with a tension of 0.2 ~ 0.4g / d is used as a warp.

In the present invention, there is no appearance damage due to the entanglement in the final product because the yarn is used to give only a weak twist without giving entanglement.

In the present invention, if the number of twist is less than 200T / M, the suspension of the final product is lowered, and if it exceeds 400T / M, the warm feeling in the final product is less.

In addition, in the present invention, the reason for calling the yarn at a temperature of 100 ° C. or less under the storage capacity is that when it is called at a temperature higher than 100 ° C., the shrinkage occurs excessively before weaving and the shrinkage effect is reduced during the actual shrinkage processing. This is because the quality of the final product cannot be expected.

On the other hand, at a temperature below 60 ° C., it is difficult to attach itself.

In order to maximize the shrinkage effect in the present invention, the heat shrinkage process at the time of post-processing is important, but the present invention relaxes the moist heat relaxation process to be refined and reduced first at a low temperature of 80 to 100 ° C, and then to a second relaxation at a high temperature of 110 to 125 ° C. Characterized in that.

In the present invention, when the primary relaxation temperature is less than 80 ° C., it is lower than the glass transition temperature (Tg) of the polyester so that no shrinkage occurs. If the primary relaxation temperature is higher than 100 ° C., there is no difference from the secondary relaxation temperature. The meaning of relaxation is lost.

In addition, if the secondary relaxation temperature is higher than 125 ℃, the quality of the final product after the completion of dry heat relaxation due to overshrinkage.

In this way, when the heat treatment for moist heat is applied to the secondary phase, a much more uniform shrinkage can be given than when the high temperature treatment is performed once.

Dry heat relaxation treatment is performed at 140-180 ° C. for at least 1 minute to ensure uniform and stable fixation of the shrinkage given after the moist heat relaxation treatment.

The reason for this is that it is difficult to obtain a uniform texture when processed for a short time at a temperature higher than 180 ° C as in the prior art, so that there is a large variation between the edge and the core and between the initial and the final treatment, and the stiffness of the final product also increases. This is because heat setting is impossible if it is less than 140 degreeC.

The di-shrinkable composite fabric obtained by the above method was able to obtain the texture and appearance of natural dogs by expressing 5-30% of the difference between yarns in the state of the fabric.

Example 1

Non-shrinkage rate is 10% by spinning and mixing 10 mol% neopentylglycol copolymerized non-shrinkage polyester with 17% non-shrinkage and low shrinkage polyester with intrinsic viscosity of 0.64 poise and 7% non-shrinkage. A biaxial shrinkage composite yarn of 50 denier 24 filaments was obtained.

S-weave 300T / M was given to the biaxially-composite composite yarn without entanglement, and the warp was prepared at a tension of 0.3 g / d and a temperature of 85 ° C. to prepare a slope.

As the weft yarn, a multi-filament of 75 denier 72 filaments obtained by spinning a polyester having an intrinsic viscosity of 0.64 poise was used to give 2400T / M twist in alternating S and Z directions. The warp and weft yarns were used to weave plain weaves having a warp density of 150 bones / position and a weft density of 94 bones / inch.

The fabric was wet heat-relaxed twice at once at 95 ° C and once at 115 ° C and dry heat-treated at 160 ° C for 1 minute to obtain a final product.

The physical properties of the obtained product were sensory tested and the results are shown in Table 1.

[Examples 2 and 3]

The preparation was carried out in the same manner as in Example 1, except that the production conditions were changed as shown in Table 1.

[Comparative Examples 1-4]

It was prepared in the same manner as in Example 1 except that the production conditions were changed as shown in Table 1.

TABLE 1

※ ◎; Extremely good, ○; Good, Δ; Usually, ×; Bad

Claims (1)

The yarns treated at 60 to 100 ° C with a twist of 200 to 400 T / M without giving entanglement to the bishrink composite yarn obtained by spinning the high shrink polyester and the low shrink polyester with a non-shrinkage difference of 5% or more. After weaving using the fabric, the fabric is wet shrinked at 110 to 125 ° C. first at 80 to 100 ° C., followed by dry heat at 140 to 180 ° C., characterized in that the method for producing a multi-shrink composite fabric.