KR890001037B1 - Brushing a fabric with low tenacity-elongation - Google Patents

Abstract

Fabric is produced by making a fabric of continuous polyamide filament yarn with the yarn at least partly exposed on a surface of the fabric and having an elongation less than 60% and a tenacity less than the smaller of 5g/denier and 7-(0.06 X elongation %) g/denier, and abrading the surface sufficiently to break some of the filaments on the surface. The filament are pref. of nylon 66, with tenacity of 1.5-4 g/denier and elongation of 10-50%. Tenacity may be the lesser of 4 g/denier or 6.8-(0.06 X elongation %) g/denier. The fabric pref. also includes polyethyleneterephthalate filaments.

Description

Manufacturing method of raised fabric

The present invention relates to a method for producing a raised fabric, and more particularly to a method for producing a raised fabric containing polyamide yarn in the fabric.

In particular, the manufacture of brushed or brushed fabrics from staple yarns has been known for a long time. Such fabrics are typically manufactured by abrasion in contact with the fabric's surface teal or wire carding clad (American El Sever, 1966). Hell's "Fiber Processing" published on pages 105 to 108.) If very short piles or fine hairs are raised, the surface of the fabric may be embossed with diamond or other similar material (see "Fiber Processing" on page 107). By contacting and abrading, the surface of the fabric is smoothly processed. Fabrics made of continuous filament nylon, which is a typical nylon yarn, are not widely used in various kinds of brush fabrics because when brushed using a conventional brushing device, the brushing results are not good.

Therefore, the present inventors have continuous filament nylon, provided that the properties of nylon yarn can be selected so that the elongation is 60% or less and the strength is 5 g / denier or less (7- [0.6 x elongation%]) g / denier or less. It was found that even a fabric containing a brushing process can be successfully completed and completed the present invention.

That is, a feature of the present invention is that some of the filaments constituting the polyamide yarn constitute a fabric of finely selected polyamide yarn having a plurality of continuous polyamide filaments but at least partially exposing the polyamide yarn on the surface of the fabric. To provide a method of producing a raised fabric by abrasion to the extent that the polyamide yarn is cut, wherein the polyamide yarn must be less than about 60% of elongation, or less than 5 g / denier or less (7- [0.06 x elongation%]). It should have a strength lower than g / denier. In addition, another characteristic of the present invention is that the strength of the polyamide yarn is in the range of 1.5 to 4 g / denier and the elongation is preferably in the range of 10 to 50%. As the preferred polyamide yarn, the filaments constituting the polyamide yarn from nylon 66 are preferred. Denier of also includes that the range of 1.4 to 6 is advantageous and that the strength of the polyamide yarn has a value of 5 g / denier or less (6.8- [0.06 x elongation%]) or a value of g / denier or less. . In addition, the fabric may be prepared by including a second yarn which is not composed of polyamide filaments in order to obtain various dyeing effects as required, wherein the second yarn is suitable polyester, but the most preferred polyester is polyethylene terephthalate. .

Further features of the present invention can be seen through the description described in the following embodiments.

Example 1

This embodiment relates to one example of a method of brushing a fabric made of a typical nylon yarn. A typical 66 filament nylon 66 yarn was selected to spin the denier of the stretched yarn to 70 and melt spun at 1400MPM, then cooled and steamed and wound and cold drawn to 40% of the spun yarn. Thus, a stretched yarn having a strength of 5.6 g / denier was obtained, and a warp knitted fabric was woven therefrom. Attempting to brush this warp knitted fabric using a Gessner Knit goods napping apparatus, the brushing failed because the napping machine wires were rapidly worn and could not cut the filaments completely.

On the other hand, the spinning process and the stretching process were deformed to attempt to brush by weaving a warp knitted with a stretch yarn of 70 denier with a 60% elongation of 4.2 g / denier and a 70 denier with a 30% elongation of 6.5 g / denier. Similar results were obtained.

Example 2

This embodiment is an embodiment according to the present invention, a nylon 66 polymer having a relative viscosity of 80 and a nylon 66 polymer having a relative viscosity of 40 through a captive cap having 34 capillaries, and a nylon 66 polymer having a high relative viscosity and a relative viscosity The composite was spun into a low nylon 66, melt stream with a volume ratio of 40% to 60% polymer. Spinning temperature was set at 285 ℃ and 34 rows of melt streams were air-cooled in a cooler located just below the detention to form filaments, and then formed yarns. Partial lapping was performed by passing the yarn through a feed roller rotating at a circumferential speed of 3333MPM located at the bottom 6.1m of the surface, and then passing it through a delivery roller rotating at a circumferential speed of 5000MPM. The surface of the feed rolls and the drawing rolls was chosen to have a minimum degree of sliding so that the yarns were drawn between these rolls. Next, a yarn was passed through a tube having a length of 300 ° C. with a length of 61 cm, and then wound at a winding speed of 4605 MPM. The obtained 70 denier yarn was 43% elongation and 34 g of denier composed of 34 rows of filaments.

As a result of weaving the light knitted fabric with the conjugated yarn obtained in this example and performing ordinary brushing, surprisingly excellent results were obtained.

Nylon yarn according to the present invention can be used as 100% as the reinforcement yarn (accent yarn) or surface yarn of the fabric including other fibers, the fabric is a structure of woven fabric or knitted fabric with a long length of exposed nylon yarn to facilitate the brushing process Can be.

Example 3

In the present Example, the characteristic of the yarn | dye required is given by selecting the process different from Example 2.

A nylon 66 polymer with a relative viscosity of 40 was spun at a melting temperature of 285 ° C. to cool the melt stream in the usual manner at 52 inches (132 cm) at the lower end of the surface, forming a yarn composed of 34 rows of filaments. Next, two ceramic buffer pins arranged to maintain a 55 g tension between the buffer pin and the feed roll before contacting the feed roll rotating at a surface speed of 3800 MPM, passing through After partially wrapping each of the snubbing pins and passing through the feed rolls, they were partially wrapped with a deliver roll rotating at a surface speed of 3710 MPM and then wound with a winding tension of about 7 g. The obtained 70 denier yarn had 44% elongation and had a strength of 3.9 g / denier. The warp knitted fabrics obtained with the obtained yarns were not only excellent in brush processability, but also the obtained fabrics were also of excellent quality.

Experiment method

50 yards of yarn were cut from the bobbin and elongation was measured using an Instron tensile tester. The gauge length (the initial length of the sample thread placed between the clamps) was 25 cm, the crosshead speed was 30 cm per minute, tensioned until the yarn was cut, and the elongation was increased to the length of the sample when the maximum load was applied. The strength is expressed as a percentage divided by the maximum tension with the denier of the phase before tensioning the yarn.

Claims (10)

Weaving fabrics with polyamide yarns of less than 60% elongation of multiple continuous polyamide filaments, less than 5 g / denier of strength or less than (7- [0.06 × elongation%]) g / denier, but partially Weaving the fabric so that the polyamide yarn is exposed on the surface of the fabric, and abrading the surface of the fabric sufficiently so that some filaments of the polyamide yarn exposed on the surface of the fabric are cut. The method for producing a raised fabric according to claim 1, wherein the polyamide yarn has a strength of 1.5 to 4 g / denier. The method of manufacturing a raised fabric according to claim 1, wherein the elongation of the polyamide yarn is 10-50%. The method of manufacturing a raised fabric according to claim 2, wherein the elongation of the polyamide yarn is 10-50%. The method of claim 1, wherein the filament is made of nylon 66. The method of manufacturing a raised fabric according to claim 1, wherein the denier of the filament is 1.5 or more. 2. The method of claim 1, wherein the fabric comprises a second yarn that does not comprise polyamide filaments. The method of manufacturing a raised fabric according to claim 7, wherein the second yarn is made of polyester filament. The method of claim 8, wherein the second yarn is composed of polyethylene terephthalate filament. The method of claim 1, wherein the strength of the polyamide yarn is less than 4 g / denier or less than (6.8- [0.06 x elongation%]) g / denier or less.