JP3190314B2 - Processed silk yarn, method for producing the same, and method for producing silk fabric - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a silk thread having excellent stretchability and bulkiness, a method for producing the same, and a method for producing a silk fabric.

[0002]

2. Description of the Related Art Conventionally, when a non-stretchable yarn is made to have elasticity, short fibers of the yarn are spun or twisted to have elasticity. However, in the case where stretchability is obtained by twisting, there is a problem that it takes a lot of trouble and time, and the glossiness is reduced.

[0003] In particular, silk yarns are poorly stretchable, so they are easily damaged when knitting a flat knit, and the knitting structure is mainly a flat knit, and it is possible to knit three-dimensionally by skipping eyes like a rope knit. There was a limitation on the knitting pattern that could not be formed.

[0004]

DISCLOSURE OF THE INVENTION The present invention aims to increase the elasticity and bulkiness of a silk yarn with low elasticity, thereby making it possible to diversify the knitting pattern, and to reduce the weight of the knitted fabric and soften the texture. It is intended to provide a processed silk thread, a method for producing the same, and a method for producing a silk fabric.

[0005]

The silk processed yarn according to the first aspect of the present invention is formed by spirally winding a plurality of layers of a silk thread into a hollow shape, and alternately winds the winding directions of the superposed winding layers. In the opposite direction.

According to a second aspect of the present invention, there is provided a process for producing a silk textured yarn, wherein a water-soluble fiber such as a polyvinyl alcohol fiber is used as a core yarn, and a raw or silk yarn is spirally wound as a sheath yarn. Winding, further winding a plurality of layers in the reverse direction to form a covering yarn, and then subject the covering yarn to a scouring or dyeing process at a temperature higher than the melting temperature of the water-soluble fiber. And dissolving the water-soluble fibers of the core yarn.

The method for producing a silk textured yarn according to claim 3 of the present invention is characterized in that a raw yarn or a composite yarn obtained by combining a water-soluble fiber with a silk yarn is used as the sheath yarn.

[0008] The method for producing a silk fabric according to claim 4 further comprises:
A water-soluble fiber such as a polyvinyl alcohol-based fiber is used as a core yarn, and a raw or silk yarn is spirally wound as a sheath yarn, and a plurality of layers are further wound thereon with the winding direction reversed. After forming the covering yarn, the covering yarn is woven to form a woven fabric, and then the woven fabric is scoured or dyed at a temperature higher than the melting temperature of the water-soluble fiber to form a water-soluble fiber of the core yarn. Is dissolved.

[0009]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of the present invention is shown in FIG.
This will be described in detail with reference to FIG. First, as shown in FIG. 1, a water-soluble fiber 2 such as a polyvinyl alcohol fiber is used as a core yarn 1. Raw or silk yarn 4 is used as the sheath yarn 3. In this case, the raw yarn or silk yarn 4 used as the sheath yarn 3 uses a plurality of twisted yarns.

Next, a sheathing yarn 3 in which a plurality of raw or silk yarns 4 are twisted on a water-soluble fiber 2 serving as a core yarn 1 is wound spirally in two layers by a covering machine to form a covering yarn 5. To manufacture. In this covering process, when the lower sheath thread 3 spirally twists the raw or silk thread 4 in the S-shape, the upper sheath thread 3 spirally twists the raw thread or silk thread 4 in the opposite direction to form a Z-twist. I do. The number of wound layers is not limited to two, but may be three or four.

The covering yarn 5 thus formed is heated at a temperature higher than the melting temperature of the water-soluble fiber 2.
When scouring or dyeing, the water-soluble fiber 2 used as the core yarn 1 is dissolved, and as shown in FIG. 2, the silk yarn 4 is spirally wound in plural layers to form a hollow shape. The silk-processed yarn 6 in which the winding directions are opposite to each other is obtained.

The scouring is carried out by immersing the fibers in warm water of 40 to 90 ° C. in which soap water or a surfactant is dissolved, so that sericin constituting raw silk is eluted and water-soluble fibers such as polyvinyl alcohol fibers are used. 2 dissolves. In this case, cheese scouring in which the covering yarn 5 is wound around a bobbin and scoured in warm water is preferred. Also 4
By dipping in a dye solution at 0 to 90 ° C., the water-soluble fiber 2 used as the core yarn 1 can be dissolved at the same time as the dyeing.

The silk-processed yarn 6 thus obtained is formed in a hollow shape by spirally winding a plurality of layers so that the stretchability is improved. When knitting, it is possible to jump three-dimensionally by skipping eyes like a rope knitting, and to form various knitting patterns.

Further, since the silk-processed yarn 6 is formed in a hollow shape, the woven fabric obtained by weaving the silk as a warp and a weft retains the luster of the silk, and has a high bulkiness, a light weight, and a good texture. Is softened, and silk knitted fabrics for various uses can be manufactured.

The present invention may be a method of weaving the covering yarn 5 and then dissolving the water-soluble fiber 2. In this case, first, a sheath yarn 3 obtained by twisting a plurality of raw or silk yarns 4 on a water-soluble fiber 2 serving as a core yarn 1 is spirally wound to form a covering yarn 5, and then the covering yarn 5 is formed. 5 may be woven as a warp and a weft to produce a woven fabric, and then immersed in soapy water at 40 to 90 ° C. or warm water in which a surfactant is dissolved to scour, thereby dissolving the water-soluble fibers 2. Further, a method of dissolving the water-soluble fibers 2 used as the core yarn 1 simultaneously with the dyeing in the textile dyeing step may be used.

FIG. 3 shows another embodiment of the present invention. As the lower sheath yarn 3, a composite yarn 7 obtained by twisting a water-soluble fiber 2 with a raw or silk yarn 4 is used. Is wound spirally on a core yarn 1 formed of a water-soluble fiber 2, and a raw yarn or silk yarn 4 is wound on the core yarn 1 in a reverse direction to form a covering yarn 5. I do. Next, this covering processed yarn 5 is
At a temperature higher than the melting temperature of the above, the water-soluble fiber 2 of the core yarn and the sheath yarn 3 may be melted to produce a hollow silk processed yarn 6 as shown in FIG.

In the silk-processed yarn 6 thus obtained, the core yarn 1 and the water-soluble fiber 2 used as the lower sheath yarn 3 dissolve and only the silk yarn 4 remains, so that the stretchability is further improved. Products and woven fabrics knitted and woven using the silk-processed yarn 6 can improve the bulkiness in addition to the luster of the silk material, and can further reduce the weight and the softness of the texture.

(Embodiment 1) An embodiment of the present invention will be described below. Sorblon (polyvinyl alcohol-based fiber) 56D (denier) was used as the core yarn 1, and 4 x 31 raw yarns were used as the sheath yarn 3 of the first layer, and S twist 793 (T /
m), and as the second layer of the sheath yarn 3, a raw yarn having 4 × 31 raw yarns and a Z twist of 747 (T / m) was used, and as shown in FIG. The sheath yarn 3 was double-covered on the above to produce a covered yarn 5. Next, the covering yarn 5 is wound around a bobbin, immersed in a surfactant solution at 60 ° C. to perform cheese scouring, and at the same time, the sorblon used as the core yarn 1 is dissolved to form a silk yarn shown in FIG. Yarn 6 was produced.

3. The silk-processed yarn 6 thus obtained
Elongation when 0N (Newton) is added, maximum point load,
Various properties such as Young's modulus at 0.9N to 1.0N and compression ratio when a 0.3N weight was applied to the silk fabric woven with the silk thread 6 were examined, and the results shown in Table 1 were obtained. Was done.

(Example 2) Sorblon (polyvinyl alcohol-based fiber) 56D is used as the core yarn 1, and 8 x 31 raw yarns are used as the sheath yarn 3 of the first layer, and Sorblon 56D is used.
Was used as the second layer of sheath yarn 3 using x-thin 1000 (T / m), x 8 raw yarns out of 31, and Z twist 935
(T / m), the sheathing yarn 3 was double-covered on the core yarn 1 by a covering machine to produce a covering yarn 5 shown in FIG. This covering yarn 5 was subjected to cheese scouring in the same manner as in the above example, and sorbron was dissolved to produce a silk yarn 6 shown in FIG. The characteristics of the silk thread 6 thus obtained were examined in the same manner as in Example 1, and the results shown in Table 1 were obtained.

(Comparative Example) Four of the raw silk 31 were S-twisted
10 (T / m) is twisted into two to form a lower twisted yarn. × 4 of the raw yarns 31 are Z twisted to 556 (T / m) as the upper twisted yarn. The cheese was scoured in the same manner as in the example, and the characteristics of the obtained silk thread were examined. The results are shown in Table 1.

[0022]

[Table 1]

From the results shown in the above table, the elongation of each of Examples 1 and 2 is 8% or more. When knitting a knit product, the elongation required for skipping three-dimensional knitting like a rope knitting is sufficient. Have been obtained enough. In addition, since the maximum load is 5.2 N or more and the Young's modulus is 270 or more, the fiber strength required for machine knitting is sufficient. Further, the compression ratio was 73 in Example 1.
%, And 64% in Example 2, confirming that the bulkiness was significantly superior to that of Comparative Example.

[0024]

As described above, claim 1 according to the present invention.
According to the described silk-processed yarn, a plurality of layers of the silk yarn are spirally wound in a spiral shape to form a hollow shape, and the winding direction of each of the superposed winding layers is formed in the opposite direction, so that the silk yarn has less elasticity. It is possible to enhance the elasticity and diversify the knitting pattern. In addition, the knitted fabric obtained by knitting using this silk-processed yarn retains the luster of silk, is excellent in bulkiness and weight reduction, has a soft texture, and produces silk knitted fabric for various uses. be able to.

[Brief description of the drawings]

FIG. 1 is a perspective view of a covered yarn obtained by double-covering a water-soluble fiber as a core yarn and a raw or silk yarn as a sheath yarn according to an embodiment of the present invention.

FIG. 2 is a perspective view of a silk processing yarn obtained by scouring the covering yarn shown in FIG. 1 and dissolving a core yarn.

FIG. 3 is a cross-sectional view of a covering yarn obtained by double-covering a water-soluble fiber according to another embodiment of the present invention as a core yarn and a raw yarn or a composite yarn of a silk yarn and a water-soluble fiber as a sheath yarn.

FIG. 4 is a cross-sectional view of a silk processed yarn obtained by scouring the covered yarn shown in FIG. 3 and dissolving the water-soluble fibers of the core yarn and the composite yarn.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Core thread 2 Water-soluble fiber 3 Sheath thread 4 Raw thread or silk thread 5 Covering thread 6 Silk thread 7 Composite thread

──────────────────────────────────────────────────続 き Continuation of the front page (56) References JP-A-9-59839 (JP, A) JP-A-9-31781 (JP, A) JP-A-63-59435 (JP, A) (58) Survey Field (Int.Cl. ⁷ , DB name) D02G 3/00-3/48 D03D 15/00

Claims (4)

(57) [Claims] 1. A silk-processed yarn wherein a plurality of layers of silk yarn are spirally wound in a spiral shape to form a hollow shape, and the winding directions of the superposed winding layers are alternately formed in opposite directions. 2. A water-soluble fiber such as a polyvinyl alcohol-based fiber or the like is used as a core yarn, and a raw or silk yarn is spirally wound thereon as a sheath yarn. Forming a covering yarn by layering and winding the covering yarn at a temperature higher than the melting temperature of the water-soluble fiber, and then dissolving or dyeing the core fiber to dissolve the water-soluble fiber of the core yarn. Production method of silk processed yarn. 3. The method for producing a silk-processed yarn according to claim 2, wherein a composite yarn obtained by combining a water-soluble fiber with a raw yarn or a silk yarn is used as the sheath yarn. 4. A water-soluble fiber such as a polyvinyl alcohol-based fiber as a core yarn, and a raw or silk yarn is spirally wound thereon as a sheath yarn. After forming the covering yarn by layer winding, the covering yarn is woven to form a woven fabric, and then the woven fabric is scoured or dyed at a temperature higher than the melting temperature of the water-soluble fiber to form a core. A method for producing a silk fabric, comprising dissolving water-soluble fibers of a yarn.