JPH0224943B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to a warp-knitted fabric without runs.

(Prior technology) As a knitted fabric that does not produce runs,
This publication discloses a fabric in which two types of yarns with different softening points are twisted or aligned and knitted, and only the intersections of the yarns with low softening points are fused together. In addition, Japanese Utility Model Publication No. 55-176389 discloses that heat-adhesive yarn and ordinary yarn are combined to form a warp, a chain stitch is knitted with this warp, and the contact area between the warp and swing yarn (weft) is heated. A warp knitted lace fabric bonded by melting adhesive threads is disclosed.
Also, JP-A-60-39458 and JP-A-60-39458
Publication No. 65162 describes a warp knitted lace fabric in which the warp yarns constituting the chain stitch are knitted while reciprocating between multiple wales, that is, the warp yarns knit several courses of chain stitch in one wale and then move to the adjacent wale. However, an arrangement in which these adjacent wales are knitted has been disclosed.

(Problems to be solved by the invention) Publication of Utility Model Publication No. 47-20306 and Publication of Utility Model Application No. 55-
As described in Japanese Patent No. 176389, low softening point yarns or heat-adhesive yarns are knitted by aligning or doubling with other yarns, and then heat-sealed to normal yarns. Alternatively, the heat-adhesive yarn adheres to the entire surface, resulting in a hard texture, making it unusable for warp-knitted lace fabrics that require a flexible texture. A run occurred immediately when the wire was cut.

On the other hand, JP-A-60-39458 and JP-A-60
-As described in Publication No. 65162, the warp yarns were traversed between adjacent wales, which had problems such as the inability to knit a perforated structure and the inability to obtain the desired pattern as a warp knitted lace. .

The present invention provides a warp knitted fabric that is prevented from running, has a soft texture, is easy to dye, and can be formed into any desired pattern.

(Means for solving the problem) In a warp knitted fabric consisting of a large number of chain stitches arranged in parallel, and ground thread insertion yarns and pattern yarns, etc. that connect these chain stitches, the above-mentioned large number of chain stitches are Each of them is knitted with a first yarn made of ordinary fibers, a second yarn made of ordinary fibers, and a heat-adhesive yarn provided on a low-melting point synthetic resin layer. The mutual contact portions of the synthetic resin layers are fused.

Note that the heat-adhesive yarn can be obtained by coating the second yarn constituting the core with a low-melting synthetic resin, but it can also be obtained by core-sheath or side-by-side composite spinning, and by the above-mentioned method. It can be manufactured by doubling the second yarn and a low melting point synthetic fiber filament, and in the latter case, the low melting point synthetic fiber filament is bonded to the synthetic resin layer by fusing treatment after knitting. Configure.

(Function) Since the heat-adhesive yarn is a normal second yarn provided with a low-melting synthetic resin layer, even after the low-melting synthetic resin layer is melted, the core of the heat-adhesive yarn remains intact. The normal second yarn forming the warp knitted fabric remains in the warp knitted fabric. That is, even after the fusion treatment, each of the many chain stitches is composed of two ordinary first yarns and two heat-adhesive yarns. Therefore, if one of the normal first yarn or the heat-adhesive yarn in the chain stitch is cut during sewing, the other remains, and therefore, even when the welded part peels off, run is prevented.
Further, if both the normal first yarn and the heat-adhesive yarn are cut, run is prevented at the welded portion.
When a strong external force is applied that causes the welded part to peel off, the heat-adhesive thread has a higher pull-out resistance than the normal first thread, so the normal first thread becomes the heat-adhesive thread. It comes off before the yarn, so that the needle loop of the normal first yarn gets caught on the leg of the loop of the thermoadhesive yarn, preventing run.

In addition, the low-melting point synthetic resin layer in the heat-adhesive yarn provides a favorable texture and appropriate adhesion when its adhesion amount is 1 to 30%, and if the adhesion amount is less than 1%, it is too small. It has no effect, and on the other hand, if it exceeds 30%, the texture becomes hard. However, when the application is for inner wear, it is preferable to keep it at 7% or less.

(Example) 20 denier nylon woolly yarn (second yarn)
A low melting point synthetic resin layer (melting point 120℃) consisting of a copolymer of nylon 6, nylon 66 and nylon 12.
was coated with a coating amount of 5% to obtain a heat-adhesive yarn. On the other hand, a 20 denier nylon multifilament yarn was used as a normal first yarn, and these first yarns and heat-adhesive yarn were combined. Next, the Ratsiel lace machine (manufactured by Meyer)
RMSJ78/1-SG type) is supplied with the above-mentioned first yarn 1 and heat-adhesive yarn 2 to knit the chain stitch 3 shown in Fig. 1, and the needle loop 3 of this chain stitch 3 is
A ground thread insertion thread (not shown) made of 40 denier nylon multifilament thread is inserted horizontally between a and the leg 3b of the loop, and then a 190 denier
The warp knitted fabric of Example 1 was obtained by performing heat treatment at .degree. C. for 20 seconds to fuse the contact portions of the heat-adhesive yarns 2 to each other.

The obtained warp knitted fabric has a small amount of low melting point synthetic resin layer, so it has a soft texture, and since the heat-adhesive threads are fused together, it is easy to cut even when cut with scissors.
There was no fraying from the cut end. When sewing, even if one of the first thread and the normal second thread of the core of the heat-adhesive thread 2 is cut by the sewing machine needle, the other remains, so the run is It never happened. Also, the first
If both the thread 1 and the normal second thread in the heat-adhesive thread 2 are intentionally cut and the cut ends are pulled, the tension is strong and the fused portion of the heat-adhesive thread 2 is Even if the thermoadhesive yarn 2 is peeled off, since the pull-out resistance of the thermoadhesive yarn 2 is higher, only the needle loop of the first yarn 1 is pulled out from the needle loop below it, and the needle loop of the thermoadhesive yarn 2 is removed. Since the escape of the run is delayed, the spread of the orchid stops.

In addition, in the above example, the ordinary first yarn 1 and the heat-adhesive yarn 2 are pre-paired, wound into one beam, and knitted through the same thread. Wind the above two types of thread onto separate beams,
They may be knitted using the same reed or different reeds.

The first yarn 1 and the heat-adhesive yarn 2 that are the same as those in Example 1 above are supplied to the same warp knitting machine as above, and the second
The chain stitch 4 shown in Figs. and 3 was knitted, the same ground yarn insertion yarn (not shown) as in the above example was inserted, and heat treated to obtain the warp knitted fabric of Example 2. That is, the first yarn 1 and the heat-adhesive yarn 2 are packed into the first reed and the second reed, respectively, and the first yarn 1
02/22/02/ as shown in Figure 2 a with the first reed.
The heat-adhesive yarn 2 is knitted into a 00/20/00/20 structure as shown in Fig. 2 b in the second reel, and one chain stitch 4 ( Fig. 3 (see) were alternately formed using two types of yarns 1 and 2. Note that the ground thread insertion thread was inserted into the 44/00/44/22 tissue using the third reed. The warp knitted fabric of this Example 2 consists of two types of yarn 1,
2 alternately form needle loops 1a and 2a, so even if one of the threads is cut and the cut end is strongly pulled and the fused part is peeled off, the needle loops 1a of one of the threads 1 and 2 are , 2a, the legs 2b, 1b of the loop of the other thread 2, 1 are inserted, thereby stopping the run. Also, two threads 1, 2
If you cut the threads at the same time and pull the cut end, the run will stop at the fused part, and if you strongly pull the cut end and peel off the fused part, the difference in pull-out resistance between the two threads 1 and 2 will cause the run to stop at the fused part. Therefore, the run is stopped as in the first embodiment.

A warp knitted fabric of Example 3 was produced in the same manner as Example 2 except that the chain stitch was changed to the structure shown in FIG. 4. That is, the normal first yarn 1 is knitted into a 00/02/22/20 structure as shown in FIG. 4a by the first reel,
The thermoadhesive yarn 2 was knitted into a 02/22/20/00 structure as shown in FIG. 4b using a second reel. In this case, insertion of the ground yarn insertion yarn is slightly more difficult than in Example 2, but run can be prevented as in Example 2, and the obtained warp knitted fabric is suitable for innerwear. It was hot.

Furthermore, a warp knitted fabric of Example 4 was produced in the same manner as Example 2 except that the chain stitch was structured as shown in FIG.
That is, the first yarn 1 is knitted into a 20/22/20/02 structure as shown in FIG. 5a by the first reel,
The thermoadhesive yarn 2 was knitted into a 00/02/20/22 structure as shown in Figure 5b using the second reed, and the two yarns 1 and 2 formed one chain stitch. . in this case,
Although the heat-adhesive yarn 2 is simply inserted without forming a loop in the fourth course, the heat-adhesive yarn 2
Since the contact parts are fused, Examples 2 and 3
runs are also prevented.

In addition, in the above-mentioned Examples 2 to 4, it goes without saying that the structures of the first yarn 1 and the heat-adhesive yarn 2 can be exchanged.

(Effect of the invention) This invention provides a normal first yarn and a normal second yarn.
Since one chain stitch is formed of two heat-adhesive yarns made by providing a low-melting-point synthetic resin layer on the yarn, the heat-adhesive yarn remains intact even after the synthetic resin layer is melted. The normal second yarn in the row remains in the chain stitch. Therefore, even if one of the threads constituting the chain stitch is cut during sewing, the other thread remains, so that even if the fused portion were to separate, run would be prevented. In addition, even if two yarns are cut at the same time and the fused portion peels off, there will be a difference in the pull-out resistance of the two yarns, and the pull-out of the heat-adhesive yarn will be delayed. The run is stopped once the needle loop of the thread is caught in the leg of the loop of heat-adhesive yarn. Therefore, it is possible to reduce the amount of the low-melting point synthetic resin layer on the surface of the heat-adhesive yarn, and as a result, the texture of the warp-knitted fabric can be made almost as soft as that of a warp-knitted fabric that is not heat-adhesive. can. When the normal first yarn and the second yarn of the core of the heat-adhesive yarn are of the same type,
They are dyed identically by the same dye.

[Brief explanation of drawings]

FIG. 1 is an enlarged view of the stitches of Example 1 of this invention.
Figure 2 is the organization chart of Example 2, Figure 3 is an enlarged view of the stitches of Example 2, Figure 4 is the organization chart of Example 3, and Figure 5 is the organization chart of Example 2.
The figure is an organizational chart of Example 4. 1: First yarn, 2: Heat-adhesive yarn, 3, 4: Chain stitch, 1a, 2a, 3a: Needle loop, 1b,
2b, 3b: Loop legs.

Claims (1)

[Scope of Claims] 1. In a warp knitted fabric consisting of a large number of chain stitches arranged in parallel, and ground thread insertion yarns, pattern yarns, etc. that connect these chain stitches, each of the above-mentioned large number of chain stitches is a normal one. A first thread made of fiber and a second thread made of normal fiber.
A warp-knitted fabric knitted with heat-adhesive yarns formed by providing a low-melting point synthetic resin layer on the yarn, and characterized in that the contact portions of the low-melting point synthetic resin layers are fused together. . 2. The warp knitted fabric according to claim 1, wherein the chain stitch is formed by aligning a normal first yarn and a heat-adhesive yarn. 3. The warp knitted fabric according to claim 1, wherein the normal first yarn and the heat-adhesive yarn in the chain stitch form stitch loops independently of each other. 4. The method according to any one of claims 1 to 3, wherein the second thread of the core of the heat-adhesive thread and the low-melting point synthetic resin layer on the surface are formed of the same type of synthetic resin. Warp knitted fabric. 5. The first yarn and the second yarn in the heat-adhesive yarn are each made of nylon, and the low melting point synthetic resin layer is made of a copolymer of nylon 6, nylon 66 and nylon 12. The warp knitted fabric described in Scope 4. 6. The warp knitted fabric according to claim 5, wherein the amount of the low melting point synthetic resin layer attached to the second yarn is 1 to 30%.