KR100295749B1 - Method for producing high strength composite fibric for protective clothing - Google Patents

Abstract

PURPOSE: The method for producing high strength composite fibric for protective clothing is provided to change a texture of fabric, diversely express a color of fabric, and improve tactility of fabric. CONSTITUTION: The method comprises the steps of (i) plying a high strength aromatic aramid based cotton yarn having a yarn count of 10-50 with 50-3000 denier of nylon which subjected to air interlacing process, 40-3000 denier of polypropylene or 75-4000 denier of polyester yarn, providing a twist of (100-1,000 twist/meter) x the root of 777/total yarn denier, (ii) weaving the ply yarn obtained from the step(i) only or the ply yarn with other yarn together so as to have a texture as shown in figure 1, (iii) dyeing the weaved fabric, and (iv) coating the dyed fabric with resin.

Description

Manufacturing method of high strength composite protective clothing

The present invention relates to a method for manufacturing a high strength composite protective clothing fabric, and more particularly, employing a special processing technology and changing the texture to express a variety of colors of the fabric and to improve the feel of a high strength composite protective clothing fabric It is about.

High-strength aromatic fibers used in high-strength protective clothing fabrics include "Kevlar" (trade name) developed and sold by Du Pont, USA, which has a decomposition and carbonization temperature of 427 ° C. It is -482 degreeC and is a fiber with high strength of 20-30g / d.

The prior art has simply been loosely weaving high-strength aromatic aramid fibers, such as the "Kevlar" yarns, to use them as reinforcing materials for helmets, winter clothes, and the like. However, the aromatic aramid fibers, despite their excellent physical properties, have poor dyeing and weaving properties, so that they cannot be used freely as a general garment material, but used as part of lining.

This conventional technique has a disadvantage that it is too insufficient to meet the various demands as the material for clothing, and difficult to express aesthetic appearance and various colors.

An object of the present invention is to blend an aromatic aramid fiber with nylon, polypropylene or polyester with a special composite microfabrication technique, or to place a highly strong aromatic aramid fiber on the surface or back side of the fabric through a special structure to form an aromatic aramid fiber. It is to provide a high strength composite protective clothing fabric that can improve the feel and free color expression and aesthetic appearance effect by appropriate blending effect with nylon or polypropylene or polyester while maintaining the high strength function of the.

1 is a tissue diagram for weaving a high strength composite protective clothing fabric according to an embodiment of the present invention.

FIG. 2 is an example of a diameter flow chart according to the organization chart of FIG. 1.

Figure 3 is a tissue diagram for weaving a high strength composite protective clothing fabric according to another embodiment of the present invention.

Figure 4 is a view for showing the cabaling state of the double cabaring yarn employed in the present invention.

※ Explanation of code for main part of drawing

101: high strength yarn 102: the first cabaring yarn

103: the second cabaring company

The method for producing a high strength composite protective garment fabric according to the present invention is a nylon 70d to 3000d, 40d to 3000d polypropylene or 75d of high strength aromatic aramid yarns of 10 to 50 cotton number through air interlacing (Air Interlacing) To polyester yarns of from 4000d to (100 to 1,000 Twist / Meter) × It consists of a weaving process that combines the twisting process by giving a level twist, a weaving process of weaving only the manufactured twisted yarn or blending with other yarns (bottom yarns), and a dyeing and post-processing process of dyeing and resin coating.

The air entanglement processing of the nylon, polypropylene, and polyester fibers is preferably performed by passing through a nozzle for injecting high pressure air at a pressure of 2 to 7 kg / cm 2, wherein the aromatic aramid fibers are nylon, polypropylene or When combined with the polyester fibers, the aromatic aramid fibers are to remove the flaw of the fabric surface caused by irregularly dug into the fiber yarn (Filament).

The high strength composite protective clothing fabric of the present invention prepared as described above has not only the high strength function of the high strength aromatic aramid fibers, but also wear resistance or anti-pilling by external force. In the weaving process, it is possible to weave the fabric of plain weave, twill weave, and runner weave. In particular, weaving with a special yarn of Fig. 1 as a bottom yarn, weaving the surface of the fabric is excellent in the wear resistance of the fabric and can withstand the friction well. Do. Figure 2 shows an example of the diameter flow chart when weaving into the tissue of Figure 1;

When fabric is mixed with other yarns, the denier of the twisted yarn is thicker to naturally form a lip structure, and the rip jointed denier and the bottom yarn denier are (1.5 to 3.5 = ) Out of range will result in sloppy fabrics or problems in weaving productivity. The ratio of arrangement of the twisted yarn and the bottom yarn is about 2: (3 to 15). If the ratio of the arrangement ratio is less than 2: 3, the lip tissue is not formed, and if the ratio is larger than 2:15, the high rigidity, which is an original function, is inferior.

When the fabric produced by the above method is dyed and resin coated with acrylic or polyurethane, a high strength composite protective clothing fabric having high strength function, abrasion resistance, and anti-pilling property is obtained.

The use of ordinary nylon or polypropylene or polyester yarns in place of high strength aromatic aramid fibers in the fabric production results in about 85% strength and wear resistance of the fabrics due to the processing or tissue specificity.

In addition, a polyurethane spantex of about 5 to 20% of the total joint denier may be added to the core at the time of jointing to express an elastic effect.

According to another aspect of the present invention, the present invention is mixed with 10 to 50 high strength aromatic polyaramid-based yarn, 70d to 3000d nylon, 40d to 3000d polypropylene or 75d to 4000d polyester yarn This is done by weaving, dyeing, and resin coating in accordance with the organization chart of FIG.

At this time, the high-strength aromatic aramid-based yarn can be used alone or in combination with nylon, polypropylene or polyester in the denier range. When weaving in the same manner as described above, the highly strong aromatic aramid yarn is slid to the back side of the tissue due to the nature of the tissue, so that it is invisible from the surface. Therefore, the aromatic aramid fibers located on the back of the tissue has a high strength wear resistance function and the surface can be expressed in various colors.

According to still another aspect of the present invention, the present invention uses a high strength aromatic aramid spun yarn of 10 to 50 cotton number using 70d to 3000d nylon, 40d to 3000d polypropylene or 75d to 4000d polyester yarn. It is made by producing a cabaring yarn to completely cover the aromatic aramid fibers that are difficult to dye by double covering (covering), and through the weaving, dyeing, post-processing process using a general yarn as a bottom yarn.

Referring to FIG. 4, the T / M of the primary cabaring yarn 102 during double cabaring is (1000-3500 ×) in the left margin (Z edge, spun yarn direction). Give a degree of twist) The secondary cabaring yarn 103 may be twisted to the same degree as the primary cabarring in the coincidence (S-yeon, spinning yarn seayeon direction). The double cabaring yarn made by this method naturally forms lip due to the thicker denier. The thickness of yarn should be determined at the level of 1), and the ratio of cabaring yarn to floor yarn is 1: 1 (10 ~ 10). Organizations can be applied to plain, twill, runners and other transformed tissues.

Hereinafter, a preferred embodiment of the present invention will be described. However, the following examples are intended to illustrate the invention and should not be understood as limiting the scope of the invention.

Example 1

A composite fiber (ply-twisted yarn) was prepared by twisting a high-strength aromatic aramid spun yarn of 30 cotton number and 600 denier polyester fibers air-interlaced at an air pressure of 4 Kg / cm 2 at 450 T / M. In addition, the bottom yarn was twisted polyester 150 denier at 650 T / M.

The composite machined yarn and the bottom yarn were arranged in a ratio of inclined 2:13 and weft 2: 5, and the weaving machine adopted a special structure of FIG. Dyeing and coating was completed according to the conventional polyester fabric dyeing processing method of the woven fabric as described above to complete the high strength composite protective clothing fabric of the present invention.

Example 2

A composite fiber was fabricated by combining a high-strength aromatic aramid spun yarn with a cotton number of 20 and 230 denier nylon 6 fibers at 450 T / M. In addition, the floor yarns twisted nylon 6 fiber 840 denier at 250 T / M.

The composite yarn and the bottom yarn were woven with 74 × 46 bone / inch of raw paper density by adopting the special structure of FIG. 3 in a rapier loom. In Fig. 3, the nylon 6 fiber 840 denier was positioned as the bottom yarn at 4, the composite fabric yarn was placed at 5, and only the nylon 6 fiber 840 denier was used as the weft yarn. As a result of dyeing and coating the woven dough according to the conventional nylon fabric dyeing and processing method, nylon fibers were placed on the surface of the fabric, resulting in aesthetical appearance of various colors. And a fabric having wear resistance.

Example 3

A high strength aromatic aramid spun yarn with 30 number of cottons was screened and subjected to primary carbaring with nylon 6 fiber 155 deniers and 2300 T / M Z lead, followed by S 6 of 2300 T / M with nylon 6 fiber 155 deniers. To give a double cabaring yarn. The double cabaring yarn and nylon 500 denier air jet (air jet) was arranged in a light and weft yarn 1: 3 weaving in a plain weave density 43 X 40 bone / inch in a rapier loom. As a result of the dyeing and coating of the woven dough according to the conventional nylon fabric dyeing processing method, high strength aromatic aramid yarn was perfectly carburized to express aesthetic appearance of various colors, and high strength and wear resistance. A fabric with was obtained.

As described above, according to the method of the present invention, there is an effect that a high-strength composite protective clothing fabric having a high-strength wear-resistant function and aesthetic appearance by various colors at the same time.

Although the present invention has been described in detail only with respect to the described embodiments, it will be apparent to those skilled in the art that various modifications and variations are possible within the technical scope of the present invention, and such modifications and modifications are within the scope of the appended claims.

Claims (5)

High strength aromatic aramid spun yarns with 10 to 50 cotton number were treated with 70d to 3000d nylon, 40d to 3000d polypropylene or 75d to 4000d polyester yarn (100 ~ 1,000 Twist /) through air interlacing. Meter) × It consists of a weaving process that combines the twisting process by giving a level twist, a weaving process that adopts the tissue of Fig. 1 only with the manufactured twisted yarn, or blends with other yarns (bottom yarns), and a dyeing and post-processing process that performs dyeing and resin coating. A method for producing a high strength composite protective clothing fabric, characterized in that. The method of claim 1, wherein when weaving with other yarns (bottom yarn) in the weaving process, the rip site jointed yarn denier and the bottom yarn daier Wherein the ratio of the arrangement of the twisted yarn and the bottom yarn is in the range of 2: 3 to 15 for both light and weft yarns. The method of claim 1, wherein the core is included in the core (core) 5 to 20% of the polyurethane spandex of the total joint denier manufacturing method of the high strength composite protective clothing fabric. Weaved, dyed and dyed according to the organizational diagram of FIG. A method for producing a high strength composite protective clothing fabric, characterized by performing a resin coating. 10 to 50 high strength aromatic aramid-based spun yarn using a 70d to 3000d nylon, 40d to 3000d polypropylene or 75d to 4000d polyester yarn double cover as shown in Figure 4, 1 The T / M of the car cabaling yarn 102 is (1000 ~ 3500 × Twisting) and the secondary cabaring yarn 103 is twisted within the primary cabaring T / M range in the coincidence (spinning direction of the spinning yarn) to produce a double cabaring yarn to completely wrap the aromatic aramid fibers difficult to dye However, the double cabaring yarn and the bottom yarn The yarn denier is determined to be in a range, and the ratio of the double cabaring yarn and the bottom yarn is in the range of 1: 1 (1 to 10) for both the light and the weft yarn, and the weaving, dyeing, and post-processing are performed. Manufacturing method.