JPS6260489B2 - - Google Patents

Description

[Detailed description of the invention]

(Field of Industrial Application) The present invention relates to an elastic warp knitted fabric suitable for underwear such as a foundation. (Prior art) As a method for forming a pattern on an elastic warp knitted fabric into which elastic yarns such as spandex are knitted, knitting is performed using a multi-sash pattern knitting machine equipped with a pattern receptacle and a pattern forming device. A method of knitting by disposing one or more pattern yarns alternately with the ground yarn in the first reed (front reed) of a plain knitting warp knitting machine equipped with three or more reeds, and A plurality of elastic yarns are alternately supplied to the two back receptacles of the above warp knitting machine for plain knitting, one reel knits the ground structure, and the other reel partially separates from the above ground structure. A method is known in which a knitted fabric is knitted with different textures and parts with different elastic yarn tensions are scattered, thereby forming an uneven pattern (see Japanese Patent Application Laid-open No. 128247/1983). (Problems to be Solved by the Invention) Although the method using a multi-shaped knitting machine allows a wide variety of patterns to be obtained using the same knitting yarn, it requires a pattern producing device and a large number of pattern pieces; There was also the problem of low productivity. In addition, the method of inter-knitting the pattern yarn and ground yarn using a warp knitting machine for plain knitting produces a pattern that is more flashy than the pattern obtained by knitting the same knitting yarn using a reed pattern knitting machine. However, the resulting knitted fabric was unsuitable for underwear such as foundations, although it lacked a sense of luxury and elegance. Furthermore, the method of forming an uneven pattern using the difference in elasticity of elastic threads has been limited to patterns that are dotted with small unevenness. (Means for Solving the Problems) The present invention provides an elastic warp knitted fabric having a striped pattern that can be knitted using a warp knitting machine for plain knitting, and has a front texture, an intermediate texture, and a back texture. In an elastic warp knitted fabric with a plain structure in which the back structure is made of elastic yarn, the surface structure is comprised of an S-twist area consisting of only ply-twisted spun yarn in the S direction, and an S-twist area consisting of only ply-twisted spun yarn in the Z direction. It is formed by an alternating arrangement of Z-twist zones. (Function) Since the S-twist area and the Z-twist area exist alternately, and the fabric contracts due to the action of the elastic yarn, stripes are formed based on the difference in the fiber inclination direction and torque of the knitting yarns in the S-twist area and the Z-twist area. A pattern appears.
The spun yarn may be single yarn, twin yarn, or triple yarn.
By using spun yarn, the direction of ply twist is clearer than when using single or double yarns of filament yarn, and an elegant striped pattern can be obtained. The direction becomes clearer, the strength increases, and knitting becomes easier. In addition, when burning is applied or the intermediate structure is knitted with synthetic fiber filament yarn, the above-mentioned striped pattern becomes even more vivid, and when cotton yarn is used as the above-mentioned spun double yarn, the feel becomes good. In the case of spun twin yarns, the direction of the first twist may be the same direction as the first twist or the opposite direction, especially the direction of the second twist.
When the top twist direction of at least one of the seed spun twin yarns is matched with the first twist direction, the contrast of the striped pattern is further improved. The table below shows the results of visually comparing the contrast of the striped patterns that appear when various combinations of top twist and first twist are used. However, the top twist direction and the bottom twist direction are written on the left and right of the / (slash), respectively. Those with very good contrast are ◎, those with slightly good contrast are 〇, those with slightly poor contrast are △, and very poor. Items are marked with an x.

[Table] The preferred thickness of the above-mentioned spun yarn is 30 to 80, especially for double yarns, 80/2 to 120/2, and if it is too thick, the resulting knitted fabric will be too thick. It is impractical and expensive, and on the other hand, if it is too thin, it will be less strong and difficult to knit. The twist coefficient of the ply-twisted spun yarn is preferably 3 to 5; if it is less than 3, the striped pattern will be unclear, and if it exceeds 5, the fabric will be hard. The preferred number of spun yarns in the S-twist area and the Z-twist area is 2 to 6. If the number is 1, it is difficult to create a striped pattern, whereas if the number is 1, it is difficult to create a striped pattern. The result will be blurry. The knitting yarn for knitting the intermediate structure by the second reed is preferably a multifilament yarn of synthetic fibers, and its preferred thickness is 30 to 70 d. If the thickness is less than 30 d, the fabric will be too thin and will have poor breaking strength and tear. The strength is too low to be practical, and on the other hand, if it exceeds 70d, it becomes too thick. The elastic thread that knits the back tissue by the third reed is
Bare spandex yarns of 140 to 420 d are preferred, and those of 210 to 280 d are particularly preferred. If the thickness of the spandex bare yarn is less than 140 d, the elasticity will be weak and it will not be suitable for foundation, and the striped pattern will become unclear.On the other hand, if it exceeds 420 d, the tightening force will be too strong. Note that the two types of spun yarns may differ from each other only in the direction of twist, but they may be combined with differences in count, number of twists, presence or absence of burning, degree of mercerization, etc. Furthermore, although the knitting structure is arbitrary, tricone net, satin net, half net, etc. are preferable. Furthermore, as disclosed in Japanese Patent Application Laid-Open No. 57-128247, by using two back reeds, the above-mentioned backing structure is formed by arranging the first backing structure and the second current structure alternately. Alternatively, the first backing structure and the second backing structure may be formed with a portion where the swing width of the elastic yarn is equal and a portion where the swing width is different, and a dotted uneven pattern may be created using the difference in tension. Example 1 Using a warp knitting machine with 4 reeds and a 28 gauge plain knitting machine, the first reed (front reed) was spun double yarn 1 with the ply twist in the S direction, as shown in Figure 1. 100/2 cotton yarn that does not burn as a yarn (first twist Z30 times/2.54
cm, twist coefficient 3.0, ply twist S35 times/2.54cm, twist coefficient
4.9) and 100/2 count cotton yarn, which is yarn 2 with the first twist in the Z direction and is 100/2 yarn (first twist Z30 times/2.54
cm, twist coefficient 3.0, first twist Z30 times/2.54cm, twist coefficient
4.2) and 3 wires alternately, 1 repeat 24/
It was organized as 22/22/20/22/22. In addition, nylon multifilament yarn 40 is used as knitting yarn 3 of the intermediate structure.
A full set of 10 denier filaments is fed to the second thread to knit it into a 1 repeat 20/02/20/24/42/24 weave, and a 210 denier spandex bare thread is used as the elastic thread 4 of the back weave to the third thread. I then supplied the full set and organized a 1 repeat 00/22/00/44/22/44 organization. The resulting knitted fabric is called Triconnet, and when this knitted fabric was processed and finished to a density of 54 courses/inch, 37 wales/inch, and a weight of 190 g/ ^m2 , a 2 mm wide layer was formed on the surface as shown in Figure 2. A clear and elegant striped pattern in which S-twist areas A and Z-twist areas B are arranged alternately appeared. This pattern is a clear striped pattern that is the result of a total of differences in appearance due to the twist direction of the cotton yarn, differences in twist direction due to torque, differences in gloss due to the presence or absence of tanning, presence or absence of fluff, etc. The directionally spun twin yarn 2 is a sintered yarn and has no fuzz, so it has good translucency and an elegant appearance, making it ideal as a foundation fabric for spring and summer. Example 2 Using the same knitting machine and knitting yarn as in Example 1, as shown in FIG. 1. Supply the Z-twist spun double yarn 2 and the knitting yarn 3 for the intermediate structure and knit in the same way, and in the third strand, as the first elastic yarn 4a, four pieces of spandex 210 denier, which are the same as in Example 1, are cut out. Supply in order of main insertion, 1 repeat is
Knit the first back weave of 00/22/00/44/22/44/00/00/00/44/44/44, and knit 4 of the same spandex as above as the second elastic yarn 4b on the 4th strand. Supplied in the order of main insertion and 2 removal, 1 repeat is 00/22/00/44/22/44/
00/22/00/44/22/44 second back organization was organized. In other words, the width of the 8th course M and the 11th course N are changed, the first elastic yarn 4a is inserted in a straight line, the second elastic yarn 4b is inserted in a curved manner, and all others are knitted in the same structure. do. When this knitted fabric was processed and finished to a density of 54 courses/inch and 37 wales/inch, as shown in Figure 4, S-twist areas A and Z-twist areas B were arranged alternately to create a clear and elegant striped pattern. At the same time, 4mm long, 10mm apart on Z twist area B,
A convex pattern C with a width of 2 mm was obtained. This knitted fabric, like the knitted fabric of Example 1, was suitable as a foundation fabric for spring and summer. (Effects of the Invention) By using spun yarns with different ply twist directions, an elastic warp knitted fabric can be obtained that exhibits an elegant and clear striped pattern and is suitable for underwear such as foundations. It can be knitted using a warp knitting machine for plain knitting and does not require a multi-shape pattern knitting machine, resulting in high productivity.Moreover, it is knitted using a single type of knitting yarn using a multi-shape pattern knitting machine. You can get a striped pattern that is just as elegant as when you do it.

[Brief explanation of the drawing]

Fig. 1 is an organizational chart of Embodiment 1 of the present invention, Fig. 2 is an external model diagram of Embodiment 1, Fig. 3 is an organizational chart of Embodiment 2, and Fig. 4 is an external model diagram of Embodiment 2. . 1: Spun twin yarn with ply twist in S direction, 2: Spun double yarn with ply twist in Z direction, 3: Knitting yarn with intermediate structure, 4, 4
a, 4b: elastic yarn, A: S twist area, B: Z twist area, C: convex pattern.

Claims (1)

[Scope of Claims] 1. A plain elastic warp knitted fabric consisting of a front weave, an intermediate weave, and a back weave, where the back weave is made of elastic yarn, in which the front weave consists only of spun yarns twisted in the S direction. An elastic warp knitted fabric characterized by being formed by an alternating arrangement of S-twist areas and Z-twist areas consisting only of spun yarns twisted in the Z direction. 2. Claim 1, in which the number of spun yarns arranged in the S-twist area and the Z-twist area is 2 to 6.
Elastic warp knitted fabric as described in section. 3. The backing structure is formed by an alternating arrangement of the first backing structure and the second backing structure, and the first backing structure and the second backing structure have a part with equal swing width and a part with different swing width. An elastic warp knitted fabric according to claim 1 or 2.