KR930005924B1 - Sliding improve method of very fine thread fabric and knitted fabric - Google Patents

Abstract

embossing treatment of a woven or knitted fabric composed of fine-denier yarns in a way that the water content of the fabric be 20-100 % at the embossing roller whose surface temp. satisfies the following equation Tc + 10 deg.C <= Tr <= Tc + 90 deg.C (where Tc; recrystallization temp. of polymer, Tr; surface temp. of the embossing roller), after scouring the fabric and befoe dyeing it. The method improves the slippage property of the high-density fabric by lowering the friction coefficient of the fabric surface, while leaving intact of the smooth touch of the fabric.

Description

Microfibre, How to improve the slip of knitting

The present invention relates to a method for improving the slipperiness of a microfiber cloth and a knit fabric by improving the slipperiness by reducing the coefficient of friction of the surface of the fabric without impairing the soft feel of the high density microfiber cloth and the knit fabric.

High-density microfiber fabrics and knitted fabrics using microfibers having a single yarn fineness of 1 denier or less have a high surface friction coefficient of the fabric due to the excessive surface area of the fabric resulting from the microfibers, resulting in very poor slipper when used as a wiper.

In order to solve such a problem, conventionally, the surface of the microfiber fabric and the knitted fabric was embossed at the final stage, and the microfiber fabric and the knitted fabric manufactured because the embossing treatment is treated at high temperature in a dry state have a unique soft touch. It is accompanied by a defect that is lost and hard to the touch.

The present invention is embossed in order to improve the slipperiness of microfibers, knitted fabrics, unlike the conventional method, characterized in that the embossing treatment in the wet state in the pre-dyeing step as follows. .

Microfibre, knitted fabric is refined and passed through a squeegee roller to make the moisture content of the fabric 20% to 100%, and then passed through a heated embossing roller to emboss.

The temperature (Tr) of the embossed roller depends on the microfiber material

T _c + 10 ° C≤T _r ≤T _c + 90 ° C

(T _c ; recrystallization temperature of polymer) is good.

In the present invention, when T _r is less than T _c + 10 ° C., the embossing effect is insufficient, and slipperiness is difficult to improve, and when T _c + 90 ° C., the surface of the fabric becomes hard, so that the inherent soft touch of microfiber and woven fabric is obtained. It is lost.

In the present invention, in the case of a composite yarn having two kinds of microfibers, the T _c temperature of the polymer having the higher T _c temperature among the two polymers is based on the T _c temperature.

When embossing as described above, the fabric compressed on the iron part of the embossing roller undergoes direct heat transfer and undergoes recrystallization. At this time, water evaporates and water molecules penetrate into the amorphous region of the fiber, thereby forming the inside of the molecular structure. Since the free energy is significantly increased to increase the heat treatment effect significantly, the temperature of the embossing roller can be set lower than in the conventional case.

As a result, the present invention can be embossed at a lower temperature than the prior art, it is possible to prevent the poor touch or partial fusion caused by the embossing process.

When the fabric treated as described above is dyed and tentered, the thermal stress relaxation or heat shrinkage characteristics between the iron and yaw regions are changed, so that the fine shrinkage characteristic is expressed on the surface of the fabric.

In the present invention, the microfiber yarn is single denier having a denier, and may include not only ordinary native but also divided type composite yarns or island-in-sea type composite yarns.

Example 1

As a used yarn, we use a split microfiber (60D / 36F), which is a composite yarn of polyester and nylon chips, used as a light and weft yarn to weave the density to 120 inclined yarns / inch and 80 weft / inch yarns and refine at 20 ℃ for 20 minutes. After passing through the squeegeeing roller to make the moisture content 50% and then embossing, the gap between the concave and convexities of the engraved heating roller is 2.5 mm, and the unit contact area of the convex part is carved into 1.8 mm2, and then the surface of the roller The temperature was set to 190 ℃ and the pressure with the compression roller was adjusted to 40㎏ / ㎠ and then passed through the fabric at a speed of 15m / min, followed by a series of post-processing such as dividing process, dyeing and tentering, and then inclined 135 copies / inch, 90 weft / inch processed paper was prepared.

Example 2

As the yarn used, the island component is polyester and the sea component is another polymer, and we use the island-in-sea type microfiber (100D / 48F) with a sea component ratio of 25%. After refining, embossing was carried out in the same manner as in Example 1, sea component was extracted, and a series of post-processing such as dyeing and tentering were performed to prepare processed paper having 128 inclinations / inch and 86 wefts.

Example 3

Using the same yarn as in Example 1, it was knitted with double interlock 32 gauge with theodolite density of 43 × 60 bones / inch, and then refined and embossed under the same conditions as in Example 1, and then divided, dyed, and tented. 78 x / inch processed paper was produced.

Comparative Example 1

The yarns and weaving conditions were the same as those in Example 1, and the scouring, dividing, dyeing, and tenting processes were the same as those in Example 1, and then the treated paper having a moisture content of less than 5% was treated under the embossing conditions of Example 1.

Comparative Example 2

The yarn used and the weaving conditions were the same as in Example 2, and the refining, sea component extraction, dyeing, and tenting processes were the same as those in Example 2, and then the processed paper having a moisture content of less than 5% was treated under the embossing conditions of Example 1.

Comparative Example 3

Using the yarn, weaving, and dyeing as Comparative Example 1, the modified amine silicone softener 2% solution was treated at the time of tentering without embossing.

[Comparative Example 4]

The yarn used, the weaving, and the dyeing were subjected to Comparative Example 2, but without embossing, the modified amine silicone softener 2% solution was treated during tentering.

[Comparative Example 5]

Weaving the yarn of Example 1 as a used yarn, weaving, dyeing, but the embossing was omitted, the rest of the conditions were in accordance with Example 1.

Comparative Example 6

Weaving the yarn of Example 2 as a used yarn, weaving and dyeing, but the embossing was omitted, the rest of the conditions were in accordance with Example 2.

The results are shown in Table 1.

TABLE 1

(However, ○: good, △: insufficient, ×: poor)

Claims (3)

A method for improving the slipperiness of microfibers and knits, characterized in that the microfibers and knits are embossed with an embossing roller in the wet state before dyeing. The method of claim 1, wherein the moisture content of the fabric during embossing is 20 to 100%. The method of claim 1, wherein the surface temperature of the embossed roller satisfies the following conditions. next T _c + 10 ° C≤T _r ≤T _c + 90 ° C Where T _c is the recrystallization temperature of the polymer. T _r : Surface temperature of embossing roller