KR19990049952A - Manufacturing method of lightweight insulating polyamide-based fabric - Google Patents

Abstract

The present invention is a polyamide-based hollow fiber of more than 20% of the hollow ratio, the actual single yarn fineness of 3 to 5 denier, the apparent total fineness of 100 denier 24 filament to 210 denier 34 filament as the screening and effect yarns, while supplying different overfeed rate The present invention relates to a method for producing a light-insulating polyamide-based fabric characterized in that the fabric is made by using an air texturing yarn, and the hollow fiber air texturing yarn manufactured as described above is used as a light weft yarn.

Lightweight thermal insulation fabric produced by the present invention is not only glossy luster, expressing a smooth surface feel, but also excellent in tear strength, and exhibits a light effect of more than 20% unique to hollow fiber, so as to be used for high-quality sports casual jackets, bags, and automobiles. Product development is possible in various applications such as seats.

Description

Manufacturing method of lightweight insulating polyamide-based fabric

The present invention relates to a method for producing a lightweight insulating polyamide-based fabric, and more particularly, to a polyamide hollow fiber having a hollow ratio of 20% or more, having a single yarn fineness of 3 to 5 deniers and a total fineness of 100 to 210 deniers. By weaving with air-textured hard and weft yarns, the tear strength is 15kg or more, the weight of the product is 20% lighter than the weight of the general polyamide-based fabric, and the thermal insulation is more than 10% better than the general product, and the dyeing And a process for producing a lightweight insulating polyamide-based fabric to be used as a jacket for sports clothes after processing of coatings and the like.

Known methods for manufacturing air texturing fabrics are filament yarns of 4-9 denier with single yarn fineness as light and weft yarns, and are mainly fabricated by air texturing the yarns used as weft yarns. Although it has been manufactured through a process such as refining, dyeing, etc., the weight of the product is heavy, hard to the touch (Hard), there was a problem that the surface is poor due to the occurrence of wrinkles, etc. during the working process. In addition, the conventional oxford fabric mainly uses polyamide yarn, and uses monoamide fine yarn of 6 to 9 denier grade for warp yarn and polyamide general yarn of 6 to 9 denier grade for weft yarn. It manufactured using the yarn or the air texturing process yarn.

However, when polyamide-based plain yarn 210 denier is used, wrinkles are likely to occur during refining and dyeing processing, and special care is required to control the tension of the fabric during the process, and air texturing yarn is used only for the weft yarn in most cases. . In some cases, there are products that use air-processing yarns for warp, but there is a problem that weaving becomes difficult due to poor productivity and quality in the sizing process, which is a yarn preparation process. There was a problem that the limitation to the development in the use was bound to be restricted.

In addition, Japanese Patent Application Laid-Open No. 9-59834 describes a method for producing knitted fabrics using flammable work of polyester hollow fiber having a hollow flatness of 5 or less and a hollow ratio of 20 to 50%. In Korean Patent Application Laid-Open No. 9-67736, a method for producing a polyamide-based lightweight fabric having a volume and a dry feeling is proposed by air-interlacing a polyamide mulberry filament having a different non-shrinkage rate and a hollow fiber having a hollow ratio of 5 to 30%.

However, the former method is limited to the material used because the method of using a polyester fiber material, the latter method is a method of entangled polyamide mulberry filaments and hollow fibers to maximize the lightweight effect There is a flaw that cannot be.

The present invention solves the above-mentioned problems of the prior art by using a polyamide-based hollow fiber having a single yarn fineness of 3 to 5 denier level and an apparent total fineness of 100 to 210 denier, but used as a light and weft yarn. It is an object of the present invention to provide a method for producing a polyamide-based air texturing lightweight insulating fabric of soft quality and excellent productivity by forming an uneven loop by air texturing the yarn.

1 is a schematic manufacturing process of the present invention.

Figure 2 (A) is an enlarged cross-sectional photograph of the general nylon filament yarn.

Figure 2 (B) is an enlarged cross-sectional photograph of the hollow nylon filament yarn.

* Explanation of symbols for main parts of the drawings

1: Effector 2: Judging

3: first supply roller 4: air texturing area

5: Heat setting area 6: Winding roller

The present invention will be described in detail as follows. The hard and weft yarns used in the present invention are polyamide hollow fibers having a hollow ratio of 20% or more. Such hollow yarns are polyamide-based hollow fibers having a real single yarn fineness of 3 to 5 denier, an apparent total fineness of 100 to 210 denier, and a real total fineness of 80 to 180 denier.

On the other hand, in the present invention, the polyamide hollow fiber used as light and weft yarn is used in the form of an air texturing yarn through the manufacturing process shown in FIG.

In other words, the hollow fiber used as the screening (2) among the two polyamide hollow fibers used as light and weft yarns has an overfeed rate of 8 to 12% in the first feed roller [3]. Hollow fiber used as) is supplied at an overfeed rate of 20-25%. The screening (2) and the effect yarn (1) supplied at different overfeed rates are subjected to air texturing with turbulence by compressed air in the air texturing zone to form a loop. This becomes an air texturing yarn in which the effect yarn 1 is coated around the screening 2. If the overfeed rate in the overfeed zone is less than 8% in the case of screening (2), there is no effect of forming an uneven loop, and if it exceeds 12%, it is not good because the uneven loop effect is excessive. The stability of the falls. In the case of the effect yarn 1, when the overfeed rate is less than 20%, it is difficult to form a two-layer structure due to the overfeed of the screening and the effect yarn, and the uneven loop forming effect is inferior. In addition, if it exceeds 25%, the loop effect is so large that the formability of the processed yarn is poor and the trimming occurs. In this way, the air-textured yarn stabilizes the loop shape of the yarn primarily in the heat setting zone, and the heat setting temperature range is preferably 180 to 200 ° C. If the temperature is less than 180 ° C., the heat setting effect of the processing yarn loop is inferior, so that it is impossible to form a non-uniform loop. If the temperature is higher than 200 ° C., a part of the processing yarn is melted to reduce the loop effect as well as the workability. The contractor whose structure is stable by shrinking in the heat setting zone is the air texturing with the stable loop effect while passing through the winding roller. At this time, only 4 to 7% of the draw ratio should be wound to produce a stable loop-shaped processing yarn. At this time, if the draw ratio is less than 4%, the uneven loop is present as a sieve that is not completely drawn, so that the residual elongation of the processed yarn becomes high, resulting in poor loop stability and poor winding state of the processed yarn. If the ratio is higher than 7%, the ability to form non-uniform loops is reduced, so that the loop effect as the air texturing yarn is reduced, and when the yarn is wound up, the tension of the yarn is too high, resulting in poor winding form of the yarn.

When the air texturing yarn of the hollow fiber fabricated in this way is used as a light and weft yarn, the fabric is made of 3,801 high-density flat tissues and is woven using an air jet machine of 400 RPM. When sizing, it is necessary to appropriately control the concentration of the resin, the production speed, and the tension conditions. After weaving, deamination and dyeing are used to prepare a light-weight polyamide-based heat-insulating fabric with light gloss and light weight of 20% or more.

(Example 1)

Two air-textured polyamide-based hollow fibers (20% porosity) having a total apparent fineness of 210 denier 34 filaments were used. At this time, the screening of the two hollow fibers is supplied at an overfeed rate of 10.5%, the effector is supplied at an overfeed rate of 21%, and the compressed air pressure in the air texturing zone is 9kg / cm ² , resulting in a non-uniform loop structure for the processed yarn. After forming and heat-setting to a temperature of 200 ℃ in the heat setting zone, drawn to a 5% level in the winding roller to produce an air texturing process yarn.

The polyamide-based hollow fiber air texturing yarn manufactured as described above was used as light and weft yarn, and weaved the plain weave to 400 RPM on an air jet loom with a total number of 3,801 pieces, a straight width of 68.2 inches and a raw paper density of 59 × 40 pieces / inch. , Refined, dyed, and processed to produce the final product. Manufacturing conditions and product evaluations are shown in Tables 1 and 2.

(Example 2)

Prepared in the same manner as in Example 1, except that the total apparent fineness of the polyamide-based hollow fiber (20% porosity) was 100 denier 24 filaments (real total fineness 80 denier 24 filaments) and 210 denier 34 filaments (real total fineness 180 denier 34 filaments) Two yarns were used for air texturing.

Manufacturing conditions and product evaluations are shown in Table 1 and Table 2.

(Comparative Example 1)

It was prepared under the same conditions as in Example 1 (elongation ratio 4.5), but was used by air texturing using two general polyamide-based 210 denier 24 filaments.

Manufacturing conditions and product evaluations are shown in Table 1 and Table 2.

(Comparative Example 2)

It was prepared under the same conditions as in Example 1, but was used by air texturing yarn using two general polyamide-based 210 denier 48 filaments.

Manufacturing conditions and product evaluations are shown in Table 1 and Table 2.

(Comparative Example 3)

Manufactured under the same conditions as in Example 1, using two general polyester-based 250 denier 48 filament was used by air texturing.

Manufacturing conditions and product evaluations are shown in Table 1 and Table 2.

TABLE 1

Manufacture conditions

Table 2

Product evaluation

Polyamide-based air-textured lightweight thermal insulation fabric prepared by the present invention has a light and weft density of 100 ~ 150T level and has a light effect up to 20% compared to general polyamide-based fabrics, 40% compared to polyester-based fabrics It has a glossy and soft touch. In addition, the lightweight insulating fabric of the present invention has a tear strength of 13kg or more, and has a high bending resistance to bending, so that it can be utilized as sports clothing such as ski suits, car seats, and high-quality bag fabrics by performing high-permeability waterproof coating.

Claims (2)

The single yarn fineness is 3 ~ 5 denier, the apparent total fineness of yarn is 100 ~ 210 denier, the actual total fineness is 80 ~ 180 denier, and 2 polyamide hollow fiber with 20% or more hollow ratio is used as screening and effect yarn. A method of producing a lightweight insulating polyamide-based fabric, characterized in that the air texturizing is used as warp and weft while supplying at different overfeed rates. The method of claim 1, wherein the overfeed rate of the screening is 8 to 12%, the overfeed rate of the effect yarn is 20 to 25%, the air pressure is 8 to 10kg / cm ² and air-textured with compressed air, the temperature is 180 to ²⁰⁰ ℃ A method for producing a light-insulating polyamide-based fabric, characterized in that the heat setting in the furnace and winding in a draw ratio of 4-7%.