KR100372224B1 - Double warp-knitted fabric having high elasticity - Google Patents

Abstract

The double warp knitted fabric of the present invention has a suede layer of brushed hair on the surface (2), and a back surface (3) than the suede layer on the surface (2) to have a natural wool feel. It is formed of a pile layer having a long length of hair and configured to be worn on both sides, and is formed on the elastic bar, the first and second middle bars L2, L3 and the front bar L4 on the back bar L1. Polyester yarns are used, respectively, the back bar L1, the second middle bar L3 and the front bar L4 are cross stitched, and the first middle bar L2 is knitted by the open stitch, respectively. The yarn of the first middle bar (L2) in which the divided polyester yarn is used is supplied 1.2 to 2.0 times as the yarn of the second middle bar (L3), knitted and post-processed, so that the appearance and texture of the natural wool are almost the same. Knitting fabric with excellent elasticity in terms of physical properties such as insulation .

Description

Double warp-knitted fabric having high elasticity

The present invention relates to a double warp knitted fabric excellent in elasticity, and more particularly, to a double warp knitted fabric excellent in elasticity as a substitute for natural wool.

Wool fibers are excellent in warmth and elasticity, and they are a high-quality fiber and take up a large part of our life. In addition, recently, reversible fabrics are processed around the world without cutting cotton wool. Reversible fabric) is light and warm, and can be worn on both sides, so it is widely used as a winter clothing.

However, this wool-sided double-sided garment, also called mustang in our country, has many of the above advantages, but is dyed only with dyes that are expensive in nature and contain high amounts of lead when dyeing. Therefore, it is harmful to the human body when worn, and besides, the elasticity is considerably small compared to the large volume, which causes inconvenience to the activity, and the design thereof is limited, so sewing in various forms suitable for the modern sense has been impossible.

Therefore, the development of cheap human tissues for natural wool is expected to be in great demand both at home and abroad, and the movement to manufacture wool fabrics in several developed countries as well as in Korea, which has the best technology in the textile industry and sewing field. It has been happening for many years, but no special fabric has yet been introduced.

The present inventors have noticed this atmosphere earlier and have the same appearance as natural wool double-sided fabrics, but are superior in terms of physical properties than wool, so they are light, soft and elastic, so there is no inconvenience in activities, and natural wool with excellent morphological stability when sewing. In order to develop a similar double-sided fabric for wool, research was conducted in various aspects.

As a result, a suede feel on the surface and long hairs on the back have led to the development of a double-wearing pseudo-wool double-sided fabric, which was filed in Utility Model Registration No. 2000-8563.

The product according to the above application has the same feeling as wool mustang, and it is light and elastic, and it is water washable and inexpensive. The problem was that the laundry durability was lowered and the shape stability of the sewing garments was slightly lowered.

Therefore, the present inventors continued to study the structural aspect of warp knitted fabrics in contrast to the above-mentioned application by joining after the knitting for wool substitute fabric in addition to the above application, the appearance of the front and back in the knitting step without going through the joining process By forming differently, the manufacturing process is simple, so the fabric cost can be significantly lowered first, and the problem of washing durability due to adhesion of the front and back surfaces can be completely solved. I developed a textile.

In other words, the inventors of the present invention have been specially knitted and manufactured under special conditions to provide a light and stretchable double warp knitted fabric made of chemical fibers with the same feel as natural wool.

1 is a perspective view showing the overall configuration of a double warp knitted fabric according to the present invention;

2 is an enlarged side cross-sectional view illustrating a state before forming a pile layer in the double warp knitted fabric of the present invention;

Figure 3 is an enlarged side cross-sectional view of Figure 1 showing an example of the final completed state of the double warp knitted fabric according to the present invention;

Figure 4 is a complete organizational diagram of a representative example of the double warp knitted fabric according to the present invention,

(a) is an organization chart of a back bar L1,

(b) is an organization chart of the first middle bar L2,

(c) is the organization chart of the second middle bar (L3),

(d) is the organization chart of the front bar (L4),

(e) is an overall complete organizational chart of the double warp knitted fabric of the present invention.

※ Explanation of symbols for main parts of drawing

1: double warp knitted fabric 2: surface

3: back side 4: pile layer

L1: Back Bar L2: First Middle Bar

L3: 2nd middle bar L4: Front bar

According to the present invention, in the double warp knitted fabric having different front and back surfaces,

Elastic yarns on the back bar, polyester yarns on the first and second middle bars and front bars are used, respectively, and polyester yarns on the first middle bar are high split yarns,

The yarns of the first middle bar and the second middle bar are supplied at a ratio of 1.2 to 2.0: 1,

The back bar, the second middle bar and the front bar are continuously stitched in a close stitch and the first middle bar is in an open stitch and post-processed so that a short brushed suede layer is formed on the surface. On the back side, a plurality of hairy pile layers having a length longer than the surface are formed to provide a double warp knitted fabric having excellent elasticity that can be worn on both sides.

In the present invention, the back bar is knitted with a cross stitch of 1-0 / 1-2 tissue, and an elastic yarn is used, which includes polyester elastomer, polyamide elastomer, polyurethane elastomer, fluoroelastomer, polycarbonate elastomer elastic yarn, and the like. Although it can be used, in particular, polyurethane elastomeric elastic yarn is preferably used.

As the polyurethane elastomer, a polyurethane elastomer obtained by reacting a polymer diol such as polyester diol, polyether diol and polycarbonate diol with a polyisocyanate, a low molecular chain extension agent and a terminal stopper may be exemplified as an elastic yarn, among which polyether The elastic yarn formed from the type polyurethane elastomer is particularly preferable because of its excellent thermal stability.

The double warp knitted fabric according to the present invention is mainly formed of four bars, wherein two middle bars are applied, and the first middle bar is an open stitch of 0-1 / 2-1 or 2-1 / 0-1 tissue, and a second one. The middle bar is preferably knitted with a crossstitch of 1-2 / 1-0 or 1-0 / 1-2 tissue.

In addition, it is preferable in terms of touch and heat retention that high split yarns of polyester sheath-core yarns are used for the first middle bar and polyester high shrink yarns are respectively used for the second middle bar.

In addition, the frontbar is organized into 2-3-13-14 / 1-0 tissues, but usually 6-7 / 1-0

Alternatively, 1-0 / 6-7 tissues are most applied and the length of the pile can be adjusted appropriately depending on the purpose of the final fabric.

In addition, the double warp knitted fabric according to the present invention may be formed as a three-bar warp knitting machine, but it is preferable to form a four-bar warp knitting machine because it is somewhat inadequate to obtain the intended effect of the present invention.

Hereinafter, a double warp knitted fabric of the present invention will be described with reference to the accompanying drawings.

The double warp knitted fabric 1 according to the present invention is formed from the back surface 3 of the pile layer 4 and the suede-like surface 2 having a myriad of fine hairs, as illustrated in FIG. .

The back surface 3 of the pile layer 4 is looped and knitted to protrude to the outside as shown in the organization chart of FIG. 4 (d), and then subjected to raising and then cutting and shearing. The sides are evenly arranged and then heat set to completion. The raising process of the pile layer 4 may be carried out before and after dyeing according to the length of the pile to be formed, usually after the dyeing if the length of the pile is long, and is done before dyeing when the length of the pile is short.

In addition, the hairs of the surface 3 is formed by only the portion formed by the first middle bar (L2) of the knitted dough through the raising process and shearing process, which is the first middle bar (L2) is formed by an open stitch The first middle bar (L2) yarn feed amount is appropriately adjusted within the ratio range of 1.2 to 2.0 of the second middle bar (L3) feed amount, so that the back bar (L1), the second middle bar (L3), and the front bar (L4) ), So that only the portion knitted by the first middle bar (L2) is exposed to the inner surface during knitting, thereby deforming the ring formed by the yarn of the other portion. Without that, only that part is subjected to a raising process, forming a suede layer.

In other words, when the yarn supply amount of the first middle bar L2 is less than the lower limit, the covering force is weak, so that the first middle bar L2, the back bar L1, the second middle bar L3 and the front bar ( When the yarn of L4) is knitted, it protrudes on the inner surface portion, that is, the surface of the double warp knitted fabric (2) of the present invention, which causes a defect in the subsequent raising process, and when the upper limit is exceeded, the product is excessively supplied. Since the disadvantage of causing a rise in the unit cost of the fabric is clunky and heavy, the above range should be maintained to achieve the intended effect of the present invention.

The double warp knitted fabric 1 according to the present invention is once knitted into such a tissue (see Figs. 4a, 4b, 4c, 4d, 4e) and then the dough will be the surface 2 in the present invention as shown in Fig. 2. Cotton is first subjected to raising, cutting and shearing to form a plurality of fine hairs, and then subjected to preheating fixing, weight loss, dyeing, and drying.

Approximately 20-25% of weight loss occurs in the weight loss process.

Thereafter, this portion forming the back surface 3 in the double warp knitted fabric 1 according to the present invention with the knitted portion looped by the front bar L4 as shown in FIG. 4D is the middle bar L2. Similarly to the surface (2) of the brushed solely, through the cutting and shearing process to form a pile layer (4).

The back surface 3 of the double warp knitted fabric 1 according to the present invention is used after being brushed to form a pile layer as shown in FIG. 3, but if necessary, without being subjected to the raising process as shown in FIG. 2. It can be used as it is.

In order to more easily understand the features of the present invention, the following specific preferred embodiments are described by way of example, but the present invention is not limited thereto, and those skilled in the art to which the present invention pertains are outside the scope and scope of the claims. It will be clearly understood that modifications and variations are possible without this.

Example 1

Five dough specimens were knitted under each condition as shown in Table 1 using a Copcentra 4K, 4 bar tricot warp knitting machine.

The surface of the double warp knitted fabric of the present invention was formed by raising only the back surface of the knitted dough test pieces, i.e., the portion formed by the first middle bar, to give a suede feeling through a cutting and shearing process.

Thereafter, all five dough test pieces were prepared using sodium hydroxide, and then raised to 98 ° C. for 40 minutes, held for 30 minutes in that state, followed by weight loss treatment, followed by washing, washing with water, and drying.

Subsequently, after staining, the surface of each dough test piece formed by the front bar is raised to form a plurality of long piles, and the part formed by the first middle bar is again raised, and after the shearing process, only the back surface of the dough test piece is normally The finishing process called sanding was performed, and all the test pieces were heat-set to complete the double warp knitted fabric having excellent elasticity intended in the present invention.

The five fabrics according to the present example had different weights and slight differences in thickness, but they were the same in overall terms. Above all, the fabrics of the specimens had unique effects due to their different effects on both sides.

That is, the specimens 1, 3, and 4 gave almost the same feeling, and the specimen 2 had a long length of the pile layer, which is usually the inner side when sewing the garment, to create a long hairy fleece atmosphere. In addition, specimen 5 had a short hair but was slightly softer in structure.

When each piece of the test piece fabric according to this embodiment was sewn into a women's winter top to be worn on both sides, it had almost the same volume as a wool fabric called a mustang, but it was rather light and the appearance and touch were the same. Could not discriminate quantum.

In particular, the elasticity is less convenient when you bend your arms when you bend the arm, and compared with other natural fibers, wool is excellent in elasticity recovery, but in the case of double-clothing clothing, the bent portion remains long after wearing However, the double fabric obtained according to the present embodiment did not have any folded marks and had excellent form stability.

Table 1

Baa Organization chart material Threading RUN-IN (m) Test piece 1 L1 1-0 / 1-2 Polyurethane (Spandex) 40D Full 850 L2 0-1 / 2-1 Polyester island yarn 75D ˝ 1750 L3 1-2 / 1-0 Polyester High Shrink Yarn 40D ˝ 1300 L4 6-7 / 1-0 Polyester 50D ˝ 3040 Test piece 2 L1 1-0 / 1-2 Polyurethane (Spandex) 40D ˝ 850 L2 0-1 / 2-1 Polyester island yarn 75D ˝ 1750 L3 1-2 / 1-0 Polyester High Shrink Yarn 40D ˝ 1300 L4 13-14 / 1-0 Polyester 50D ˝ 3040 Test piece 3 L1 1-0 / 1-2 Polyurethane (Spandex) 40D ˝ 850 L2 2-1 / 0-1 Polyester island yarn 75D ˝ 1750 L3 1-0 / 1-2 Polyester High Shrink Yarn 40D ˝ 1300 L4 6-7 / 1-0 Polyester 50D ˝ 3040 Test piece 4 L1 1-0 / 1-2 Polyurethane (Spandex) 40D ˝ 850 L2 2-1 / 0-1 Polyester island yarn 75D ˝ 1750 L3 1-2 / 1-0 Polyester High Shrink Yarn 40D ˝ 1300 L4 6-7 / 1-0 Polyester 50D ˝ 3040 Test piece 5 L1 1-0 / 1-2 Polyurethane (Spandex) 40D ˝ 850 L2 0-1 / 2-1 Polyester island yarn 75D ˝ 1800 L3 1-2 / 1-0 Polyester High Shrink Yarn 50D ˝ 1420 L4 2-3 / 1-0 Polyester 50D ˝ 1760

The double warp knitted fabric having excellent elasticity of the present invention configured as described above can be manufactured in a simple manner while giving a luxurious feeling unlike the existing coarse wool substitute fabric, and thus, the manufacturing cost is low, and above all, in appearance and touch. It is so identical that it is indistinguishable from natural wool.

In addition, the double warp knitted fabric manufactured according to the present invention has excellent elasticity than natural wool fabrics, which is excellent in fit and water washing, and at the same time, it has good shape stability, and can be worn for a long time. to be.

Claims (2)

In double warp knitted fabrics with different front and back surfaces manufactured by post-treatment such as brushing and shearing after knitting process, Elastic yarns in the back bar (L1), polyester yarns in the first and second middle bars (L2) (L3) and front bar (L4) are respectively used, and the polyester yarns of the first middle bar (L2) are highly divided yarns. ; The yarns of the first middle bar L2 and the second middle bar L3 are supplied at a ratio of 1.2 to 2.0: 1; The back bar (L1), the second middle bar (L3) and the front bar (L4) are cross stitched, and the first middle bar (L2) is continuously stitched open stitches to form letters; A highly flexible double warp knitted fabric characterized by having a short raised suede layer on the surface (2) and a plurality of hairy pile layers (4) having a length longer than the surface on the back surface (3). The method of claim 1, wherein the back bar L1 is 1-0 / 1-2, the first middle bar L2 is 0-1 / 2-1 or 2-1 / 0-1, and the second middle Bars L3 are 1-2 / 1-0 or 1-0 / 1-2 and the front bar L4 is a tissue within the range 2-3 / 1-0 to 13-14 / 1-0, respectively. A stretchable double warp knitted fabric characterized in that it is knitted.