KR100274576B1 - Manufacturing of nonwoven fabric for the use of wiper - Google Patents

Abstract

In the present invention, polyester and polyamide are spun in a mixed ratio of 85:15 to 15:85 to make split type short fibers, and non-woven fabrics are prepared from the short fibers to contain 3-12 parts of aqueous polyurethane. It is a method of manufacturing a non-woven fabric for wiping, which is produced by impregnating in an aqueous solution, mangling, coagulating, dyeing with a disperse dye and a vat dye, and then buffing.

The present invention can be produced inexpensively without wiping the environment of a wiping nonwoven fabric having a good touch and decontamination and excellent various fastnesses.

Description

Manufacturing method of nonwoven fabric for wiping

The present invention relates to a method for producing a wiping nonwoven fabric having excellent decontamination ability, and more particularly, a single fiber of a split composite fiber composed of two different types of polymers (components A and B) is required for needle punching or spunlace. The present invention relates to a method of manufacturing a nonwoven fabric for wiping having excellent cleaning properties through a nonwoven fabric having a constant thickness through a spunlace process, and a water-soluble polyurethane treatment and a dyeing process.

Conventional wiping nonwoven fabrics have been proposed by laminating filaments made of thermoplastic polymer, partially heating, pressing and bonding (Japanese Patent Application Laid-Open No. 60-11148), but for wiping made by this method. The non-woven fabric has a problem in that the fusion occurs in the heat-pressing part, so that the thickness becomes thin and dents. In addition, the fibers in the welded part become solid enough to lose their shape as fibers, resulting in loss of flexibility and poor cleaning properties. .

The present invention is to solve the problems described above, to provide a method of manufacturing a non-woven fabric for wiping having a uniform thickness, abundant flexibility and excellent cleaning properties.

Hereinafter, the present invention will be described in detail.

Two different kinds of polymers A and B are used, but the polymer of component A is a polymer such as polyamide, nylon 66, modified polyamide, polyester, modified polyester, and the polymer of component B is selected as component A. A polymer selected from polyamide, nylon 66, polyester, and modified polyester is used. After the composite spinning with the mixing ratio of the component A and the component B to 85:15 to 15:85, the fibers are crimped and stretched, followed by heat-setting and cutting to obtain single yarn fineness of 1 to 10 deniers and a fiber length of 30 to 80 mm. It is made of short fibers, and the degree of splitting of the obtained short fibers is 0 to 50%. The degree of split is defined as the ratio of the number of split short fibers to the total number of short fibers sampled, and is considered split if any component A is separated from component B.

Since the produced split type short fibers are physically divided through the steps of carding, high pressure water punching and carding, cross-lapping and needle punching in the spunlace process, the elution process is unnecessary. The nonwoven fabric that has undergone the spunlace process or the needle punching process is a mangle having a spacing of 50 to 70% of the thickness of the nonwoven fabric after immersing the aqueous polyurethane after the punching process in a solution mixed with 3 to 12% (by weight) of water. Squeeze it out. The water is then evaporated through a drying process to solidify the polyurethane. At this time, if the water-based polyurethane is less than 3%, there is no elasticity, and if it is used more than 12%, the cost increases and the texture tends to be stiff.

In the present invention, when weaving by mangle less than 20% of the fabric thickness, the pick-up ratio becomes 10% o.w.f. and the elasticity is lost, and when it exceeds 50%, the pick-up rate is 50 to 70% o.w.f. There is a problem that the level is rather stiff to touch the product.

In addition, it is dyed with a disperse dye, dried and buffed with a certain mesh (# 180 ~ # 600) sand paper.

The short fibers undergoing the dyeing and buffing process are divided into 100%, and when manufactured in this manner, a non-woven fabric for wiper can be manufactured that has excellent absorbency and decontamination ability and is easily removed during washing.

Wiping nonwoven fabric prepared as described above is used mainly for the purpose of decontamination, and thus requires excellent washing fastness, and when the washing off of the dye increases, there is no problem in terms of use, but there is a problem of deterioration in appearance quality. . Wiping non-woven fabric consisting of a two-component material was dyed polyester-based components with a disperse dye, and polyamide-based components were dyed with vat dyes to prepare a non-woven fabric for excellent washing fastness. The dye using the disperse dye and the preparation of the dye is dyed at 120 ℃ because the polyamide-based component of the two components are weak to long-term heat and high temperature, the temperature and temperature is about 1 ℃ / min, 20 at 80 ℃ Reduction and washing are carried out for 30 minutes to remove contamination of the polyamide component by the disperse dye, followed by washing with water, followed by reduction dyeing with a dry dye at 80 ° C for 30 to 40 minutes. The nonwoven fabric obtained in this way has excellent washing fastness but does not require an alkali reduction or solvent reduction process, so that it does not generate wastewater that causes environmental pollution and there is no loss of raw materials due to dissolution of sea components, resulting in low manufacturing cost.

Example 1

20 parts nylon-6, 80 parts polyester (9 split composite fiber) staples of 2 denier × 51 mm, crimping number 15 / inch, carding, cross-lapping, needle punching 200 g / m A three-dimensional entangled nonwoven fabric of ² is made, and a water-based polyurethane is mixed with 8 parts (by weight) of 100 parts of water to make a mixed solution.

The nonwoven fabric obtained by drying this was heated to 120 ° C. at a heating rate of 1 ° C./min using azo disperse dye 2% owf, pH adjusting agent 2 g / l, and dispersant 1 g / l for 30 minutes, and then dyed for 50 minutes to 1 ° C./50° C. I wash it with temperature in minutes. After 3 g / l hydrosulfite and 3 g / l caustic soda for 30 minutes at 80 ° C, the resultant was washed with water, washed with water, and dyed for 20 minutes at 80 ° C using a 1% owf of threne-based vat dye. The dyeing nonwoven fabric was obtained by soaping and drying with an anionic softener. The nonwoven fabric was buffed with sandpaper of # 300 mesh to finally produce the wiping nonwoven fabric of the present invention, and the degree of decontamination, touch, and various fastnesses were evaluated and shown in Table 1 below.

Comparative Example 1

In Example 1 to prepare a non-woven fabric with a staple consisting of a nylon-6 single component, and the remaining conditions were the same as in Example 1 to prepare a non-woven fabric for wiping to evaluate the degree of decontamination, touch, various fastness, etc. are shown in Table 1 It was.

Example 2

Water-based polyurethane is made into 5 parts of 100 parts of water, mangle is made into 50% of the thickness of the nonwoven fabric, and the remaining conditions are the same as in Example 1 to prepare a nonwoven fabric for wiping to remove the degree of contamination, touch, and various fastnesses. The evaluation is shown in Table 1.

Comparative Example 2

A nonwoven fabric composed of a nylon-6 single component was prepared in the same manner as in Example 2 to prepare a wiping nonwoven fabric and to evaluate the degree of decontamination, touch, various fastnesses, and the like.

Example 3

In Example 1, the number of crimps in staple manufacturing was set to 20 / inch, and the rest of the conditions were the same as in Example 1 to prepare a nonwoven fabric for wiping, and the degree of decontamination, touch, and various fastnesses were evaluated and shown in Table 1 below. .

Comparative Example 3

A nonwoven fabric composed of a nylon-6 single component was prepared in the same manner as in Example 3 to prepare a wiping nonwoven fabric and to evaluate the degree of decontamination, touch, and various fastnesses.

Decontamination Tactile Wash fastness Friction fastness Daylight fastness Change CO. Pollution NY. Pollution Dry friction Wet friction Example 1 ◎ ◎ 4 4 3-4 4 3-4 3 Comparative Example 1 △ △ 3 2-3 2 3 3 3 Example 2 ◎ ◎ 4 4 3 4 3-4 3 Comparative Example 2 × △ 3 2 2 3 3 3 Example 3 ◎ ◎ 4 4 3 4 3 3 Comparative Example 3 △ × 3 2 2 3 3 3

(◎: Best, ○: Excellent, △: Normal, ×: Poor)

As shown in Table 1, the wiping nonwoven fabric of the present invention (Examples 1 to 3) was excellent in decontamination ability and feel, and was excellent in overall fastness.

The present invention has the effect of being able to manufacture a non-woven fabric for wiping excellent in touch and decontamination ability and excellent in various fastnesses without contaminating the environment at low manufacturing cost.

Claims (2)

In manufacturing nonwoven fabric with split short fiber, impregnating and solidifying polyurethane resin solution, dyeing and buffing to produce nonwoven fabric for wiping, composite spinning of polyester and polyamide in a mixing ratio of 85:15 to 15:85 To make split type short fibers, impregnated in a solution containing 3-12 parts (weight ratio) of water-based polyurethane in 100 parts of water, woven in 50 to 70% of the thickness of the nonwoven fabric, and polyester fiber as a disperse dye. Method of producing a non-woven fabric for wiping, characterized in that the first dyeing and then dyed polyamide fiber with a dry dye. The method of claim 1, wherein the polyester fiber portion is dyed after washing for 30 minutes at 120 ℃ with an azo-based dispersion dye, and the polyamide fiber portion is dyed with a trench-based dye, and then soaped with an anionic softener. Method for producing a nonwoven fabric for wiping, characterized in that.