KR102165504B1 - Knit For Seam-Sealing Tape Having Excellent Stretch in Machine-Direction And Width-Direction - Google Patents

Abstract

The present invention relates to a fabric for seam sealing tape with excellent stretchability in the longitudinal direction and in the width direction.According to the present invention, it is possible to prevent damage to the adhesive film (polyurethane membrane) under pressure such as external scratches, and to be a moisture-permeable waterproof material. It is possible to provide a circular knitted fabric for seam sealing tape made of an ultra-lightweight outdoor material that has excellent elasticity in the machine direction and the width direction while maintaining the value.

Description

Fabric for seam sealing tape having excellent stretch in length and width directions {Knit For Seam-Sealing Tape Having Excellent Stretch in Machine-Direction And Width-Direction}

The present invention relates to a fabric for seam sealing tape with excellent stretchability in the longitudinal direction and in the width direction, and for seam sealing tape bonded with a membrane film made of polyurethane to be used for finishing the sewing part of functional outdoor clothing. It is about fabric.

Textile materials used as outers for functional outdoor use are becoming more thin and lighter, and while satisfying basic functions such as water pressure and moisture permeability, which indicate the product's performance, it is comfortable to wear and sew sewing products. There is a lot of necessity for materials to improve the working efficiency of the product, and in order to ensure maximum activity, elasticity and elasticity are given in the center of materials without elasticity, thereby pursuing the comfort and easy care characteristics of products.

In particular, when sewing functional fabrics, there is a phenomenon in which the functional deterioration such as water leaks from the important sewing and stitching part in the finishing process is rapidly falling, so supplementation thereof is required, and products such as seam sealing tape are being developed.

The conventional seam sealing tape has been proposed only as a simple use of a backing cloth that emphasizes sealing as a product that emphasizes only waterproof function, and its production method is also applied to the same technology as the production process of general woven or warp knitting. It was difficult to combine functions such as light weight and thinning of the sewing product.In particular, when the sewing product was curved surface treatment, the fabric had insufficient elasticity, so a so-called puckering phenomenon that caused wrinkles on the fabric was severe, causing fatal defects in sewing products.

Nanomembrane film bonded or coated on the basic unit for seam sealing tape or coated surface formed of general polyurethane has 35-40% elasticity due to the characteristics of urethane, and in particular, nanomembrane film or PTFE film is laminated in cross-sectional shape (積層) Since it has a shape structure, it has the characteristic of expressing abundant elasticity against external force, but the conventional fabric for seam sealing tape only shows elasticity in the width direction (Machine-Direction). As it did not express elasticity, a perkering phenomenon occurred when bonding to the bent part during sewing, and the defect rate of the product was determined according to the skill of the worker.

In particular, in the case of functional fabrics that require elasticity in both directions, the conventional product exhibits elasticity only in the width direction, so that the function of the two-way fabric cannot be properly expressed, resulting in deterioration of the product and perkering caused by repeated washing. Not only did this occur, but also had a problem in that the fabric at the adhesive part peeled off after continuous washing due to the difference in elasticity in the longitudinal direction and the width direction.

Korean Patent Registration No. 10-0944767 (announced on March 3, 2010)

Therefore, according to the present invention, the product is degraded due to the fact that elasticity is expressed only in the width direction, which is a problem of the prior art, and perkering occurs due to repeated washing, and the adhesive site after continuous washing due to the difference in elasticity in the length and width directions. Prevents the fabric from peeling off, prevents damage to the adhesive film (polyurethane membrane) under pressure such as external scratches, and maintains the basic characteristics of a moisture-permeable waterproof material, while maintaining excellent machine direction and width direction. The technical task is to provide a circular knitting staff for seam sealing tape made of an ultra-light outdoor material with elasticity of ).

Therefore, according to the present invention, a fabric for seam sealing tape having excellent stretchability in the longitudinal direction and the width direction is provided, which is characterized in that the synthetic fiber false twisting work is used as a yarn and the knitting length is circularly knitted by a circular knitting machine. .

The yarn of the fabric for seam sealing tape having excellent stretchability in the length and width directions of the present invention has an elongation of 20 to 26%, a crimp shrinkage of 10 to 15%, and a non-shrinkage of 2.7 to 4.3%, 33 to 45 d/48 to 72 fila. It is characterized in that it is a yarn obtained by twisting synthetic fiber false twisting work (DTY) by a two-for-one twisting machine at 80-120 TPM/M.

The fabric for the seam sealing tape is characterized in that the elongation in the longitudinal direction (M-Direction) is 15-20%, and the elongation in the width direction (W-Diretcion) is 25-35%.

Therefore, according to the present invention, the adhesive film (polyurethane membrane) is prevented from being damaged by pressure such as external scratches, and while maintaining the basic characteristics of a moisture-permeable waterproof material, excellent stretchability in the machine direction and the width direction is achieved. We can provide circular knitting staff for seam sealing tape made of outdoor material with super lightweight feeling.

1 is a photograph of the surface of the fabric for a core sealing tape of the present invention,
2 is a photograph of the surface of the fabric for seam sealing tape of Comparative Example 2.

The present invention relates to a fabric for seam sealing tape with excellent stretchability in the longitudinal direction and in the width direction, and a membrane made of polyurethane to be used for finishing that does not cause the perkering phenomenon of the sewing part of functional outdoor clothing It relates to a fabric for a seam sealing tape bonded with a film.

The fabric for seam sealing tape excellent in stretchability in the longitudinal direction and in the width direction of the present invention is circular-knitted so that the knitting length is 1.6 to 2.2 mm by a circular knitting machine using synthetic fiber false twisting work as yarn.

Synthetic fiber false twisting yarn, which is a yarn, is a false twisting process, that is, a textured process, of synthetic fiber filaments such as polyester, nylon, and acrylic, and is also called DTY yarn.

In particular, in the present invention, the yarn is a synthetic fiber combustible processing work (DTY yarn) of 33~45d/48~72fila with an elongation of 20~26%, a crimp shrinkage of 10~15%, and a non-shrinkage of 2.7~4.3% by a two-for-one twister. It is preferable to use a yarn with a twist of ~120TPM/M.

Textured yarns have a residual twist characteristic (Torque) in the yarn depending on the processing method when the yarn is processed, but the twisting phenomenon of the manufactured fabric occurs due to this residual twist. This phenomenon is the productivity of the production process. It also shows a defect that is difficult to use as a fabric due to lowering of skew and occurrence of fabric skew. To improve this, in the present invention, if the residual twist characteristic of the yarn to be used is left yarn (Z edge), twist in the right direction (s edge) and right yarn (s edge) in the left direction (z edge). Use it.

The twisting machine (twisting machine) used for imparting twist to the above yarns is a two-for-one twisting machine, which is a method of twisting two times rather than one twisting, which can give the yarn twist evenly. The number is most preferably 80~120TPM/M, and the yarn that has undergone such a twisting process does not cause warpage of the fabric and has the characteristic that no tearing of the fabric occurs during the knitting and dyeing process.

The fabric is knitted using a circular knitting machine with the yarn, and the knitting machine used may be a single-sided knitting machine. Among the double-sided knitting machines that can knit fabric with high density among circular knitting machines, the cylinder diameter is 30 inches, and the density of the machine A double-sided knitting machine with a gauge consisting of 44 pieces per inch may be used as the knitting needle constituting the

In particular, in the case of knitting with a double-sided knitting machine, it is desirable to stop driving the upper cylinder among the upper and lower cylinders constituting the double-sided knitting machine and to derive the optimum knitting length of the knitting needle of the lower cylinder in order to form a single-sided structure. .

In the present invention, circular knitting such that the knitting length is 1.6 to 2.2 mm can impart optimal elasticity in the longitudinal direction, which is the most important feature of the fabric for seam sealing tape. If the knitting length is less than 1.6mm, there is a fatal problem that the yarn breaks due to excessive tension occurring during knitting, and if it exceeds 2.2mm, the fabric exhibits excessive elasticity in the width direction, resulting in dyeing or processing of the fabric. At the time, there is a problem in that the thread of the fabric is torn off due to fine friction and a defect phenomenon such as lint is displayed on the fabric surface.

The fabric for ventricular sealing tape has a lengthwise (M-Direction) elongation of 15-20% and a widthwise (W-Diretcion) elongation of 25-35%, which is used for ventricular sealing tape and has sufficient elasticity in the longitudinal direction. Preferred, but in the case of the conventional warp knitting staff, when the polyurethane film membrane is bonded, the elasticity of the seam sealing tape is remarkably reduced, and the elasticity is hardly expressed in the longitudinal direction, resulting in a stiff state. A ring is generated, which makes it unsuitable for use with ventricular sealing tape.

Hereinafter, a non-limiting example of a fabric for seam sealing tape having excellent stretchability in the length direction and the width direction of the present invention will be described.

[Example 1]

After twisting the polyester false twisting work (DTY) of 33d/48fila with 23% elongation, 12% crimp shrinkage, and 3.5% non-shrinkage, twisted at 100TPM/M by a two-for-one twister, the cylinder diameter has a size of 30 inches and is stitched. It was supplied to a single-sided knitting machine having a gauge consisting of 44 pieces per inch, and circular knitting was performed so that the knitting length became 2.0mm.

[Comparative Example 1]

33d/48fila polyester false twisting work (DTY) with 23% elongation, 12% crimp shrinkage, and 3.5% non-shrinkage was used, but without twisting, the cylinder diameter was 30 inches, and the knitting needles were 44 per inch. It was supplied to a single-sided knitting machine having a configured gauge, and circular knitting was performed so that the knitting length became 2.4 mm.

The physical properties of the circular knitted fabrics of Example 1 and Comparative Example 1 were measured and shown in Tables 1 and 2 below. As can be seen in Table 1, the fabric of Example 1 had a characteristic that warpage did not occur due to low skew rate, and no tearing of the fabric occurred during the knitting and dyeing process.

division Shrinkage (%) Skew rate (%) Width direction (W-Diretcion)
Elongation (%) Example 1 3% 7% 30% Comparative Example 1 7% 20% 45%

Shrinkage rate: The rate that the processed fabric decreases during washing

Skew rate: The ratio at which the left and right ends of the fabric after the dyeing process are twisted.

Elongation: The ratio of stretching when the dyed fabric is pulled in the width direction

division Length of the farm (mm) Width direction (W-Diretcion)
Elongation (%) Remark Example 1 2.0 30 KS K 0642
(Constant load method) Comparative Example 1 2.4 45 KS K 0642
(Constant load method)

In the case of Comparative Example 1 where the braiding length is longer than the conditions of Example 1 of the present invention, as shown in Table 2, excessive elasticity of the fabric is expressed in the width direction, and the yarn of the fabric is torn off due to fine friction during dyeing or processing of the fabric. It showed defects such as lint on the surface.

[Comparative Example 2]

33d/48fila polyester false twisting work (DTY) with 23% elongation, 12% crimp shrinkage, and 3.5% non-shrinkage was used, but it was used without twisting. It was supplied to a warp knitting machine and knitted so that the knitting length became 2.4mm. .

The physical properties were measured by bonding a polyurethane membrane to the fabric of Example 1 and the fabric of Comparative Example 2, and are shown in Table 3 below.

division Example 1 Comparative Example 2 Remark Length direction (M-Direction)
Elongation (%) 20 5 KS K 0642
(Constant load method) Width direction (W-Diretcion)
Elongation (%) 30 15 KS K 0642
(Constant load method) After film adhesion
Longitudinal elongation 2.6 1.5 KS K 0642
(Constant load method) After film adhesion
Elongation in the width direction 6.5 3 KS K 0642
(Constant load method)

In the case of the warp knitting staff of Comparative Example 2, it was confirmed from Table 3 that when the polyurethane film was adhered, the elasticity of the fabric was remarkably reduced, and thus the elasticity was hardly expressed in the longitudinal direction, and thus it became a stiff state.

Claims (3)

Synthetic fiber combustible work (DTY) of 33~45d/48~72fila with elongation 20~26%, crimp shrinkage 10~15%, non-shrinkage 2.7~4.3% is twisted to 80~120TPM/M by two-for-one twisting machine Fabric for seam sealing tape with excellent stretchability in the longitudinal direction and in the width direction, characterized in that the given yarn is circularly knitted so that the knitting length becomes 1.6~2.2mm by a circular knitting machine. delete The method of claim 1,
The fabric for the seam sealing tape has an elongation in the longitudinal direction (M-Direction) of 15-20%, and an elongation in the width direction (W-Diretcion) of 25-35%. Fabric for seam sealing tape.

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