JP2000073223A - Composite yarn of raw silk of different kind and its production - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a method for producing a composite yarn of raw silk of different kinds by which a core yarn or a covered yarn using the raw silk of different silkworm species is used as a core yarn and a sheath yarn or a covering yarn can be produced and to produce the composite yarn of raw silk of different kinds. SOLUTION: A prescribed reeling tension is applied to each cocoon thread to be a core yarn by applying a prescribed tension to raw silk to be the core yarn of a composite yarn of raw silk of different kinds, i.e., each fed yarn or regulating a bath liquid temperature in a reeling bath of a silk reeling machine.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for producing a composite raw yarn, and more particularly to a method for producing a heterogeneous raw composite yarn and a heterogeneous raw composite yarn used for producing a core yarn or a covered yarn.

[0002]

2. Description of the Related Art Ordinary raw silk is obtained by conjugating several cocoons of the same silkworm species, in particular, silkworm, into a single thread. On the other hand, as a conventional technique, there are a method and an apparatus for producing a composite yarn or a composite raw silk (for example, JP-A-63-282304 and JP-A-62-69814),
3839), a composite entangling method (JP-A-61-25804)
2) is known, but in the manufacturing method,
Since the core yarn is supplied without trying to actively and accurately control the yarn tension in consideration of the path length required for each layer obtained from the geometric yarn structure, the yarn of each layer in the composite yarn Is unstable, and it is difficult to coat uniformly. In conventional hybrid silk and super hybrid silk manufacturing methods, a high-speed air vortex is generated by installing an air jet nozzle, or at a high speed without an air jet nozzle attached, using chemical fiber as a core yarn, It is used to manufacture entangled composite yarn in which silkworm cocoons are entangled. Therefore, it is a single characteristic in silkworm silk, and in the case of the entangled composite yarn incorporating the properties of chemical fiber in the characteristics of silkworm silk, the large difference in friction coefficient between different fibers makes the actual strength and simpleness of the yarn. The deviation from the theoretical strength expected from the compound rule is large, and the difference in gloss between the two yarns has the disadvantage that the chemical fiber inhibits the original gloss of raw silk, especially the bottoming.

[0003]

On the other hand, the raw silk composite yarn of the present invention is a combination of raw silk of different silkworm species, both of which are natural materials, so that the characteristics, gloss and texture of each raw silk are different. It is a new composite raw yarn that can fully exhibit its original yarn strength without impairing it, complement each other and have a unique luster and texture. It is another object of the present invention to provide a method for producing a heterogeneous raw silk composite yarn and a heterogeneous raw silk composite yarn capable of easily and stably producing a core yarn and a covered yarn using a different silkworm raw silk as a core yarn and a sheath yarn, or a covering yarn. Aim.

[0004]

The object of the present invention is to provide a feed yarn serving as a core yarn in order to generate a tension difference between a core yarn and a sheath yarn or a covering yarn when a cocoon yarn of a different silkworm species is wound. Tension applying means such as a tensioner for applying a tension of, or a temperature adjusting means such as a heater for applying a predetermined reeling tension to a cocoon thread serving as a core thread by adjusting a bath liquid temperature in a reeling tank section of a reeling machine. A core yarn, which is a heterogeneous raw yarn composite yarn, and a heterogeneous raw yarn composite yarn, which are provided and given a predetermined tension to a yarn serving as a core yarn, twisted and wound up a core yarn and a sheath yarn or a covering yarn. Covered yarn can now be manufactured.

[0005]

According to the present invention, the raw silk composed of cocoons of the same silkworm species, such as silkworm silk, is used as a core thread and the raw silk composed of cocoons of other silkworm species, such as wild silk silk, is sheathed or covered as a covering thread. A method for producing a heterogeneous raw silk composite yarn and a heterogeneous raw silk composite yarn, that is, a core yarn or a cover yarn, which has characteristics that compensate for the drawbacks of each raw yarn and make use of its advantages, and have a unique luster and texture. A composite raw silk is obtained.

[0006]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, a method for producing a heterogeneous raw silk composite yarn of the present invention and the specific constitution of the heterogeneous raw silk composite yarn will be described based on examples, and the characteristics thereof will be described.

Example 1 The method for producing a heterogeneous raw silk composite yarn of this example shown in FIG. 1 is based on a raw material cocoon of a different silkworm species boiled at a predetermined temperature and a predetermined treatment time, in particular, here, the silkworm cocoon group 1 and the natural silkworm When the cocoon group 2 was put into different bunches 3 and 3 'in the machine at predetermined fiber content ratios, the cocoon group 1
Of the silkworm cocoon group 2 after passing through the kennel twisting portion 13 and the guide roller 6 to become the silkworm raw silk 7, and the silkworm raw silk is supplied as a supply yarn 7 ′ through a tension applying means 9 such as tensor to form a silkworm cocoon group 2 3 ′, the silkworm silk is reeled together with the silkworm silk, twisted so that the silkworm silk wraps the silkworm silk, and wound up by the wind-up roller 10 in a single winding process from the raw cocoon of the different silkworm species. As a result, a heterogeneous raw silk composite yarn 8 of natural silkworm and silkworm was obtained.

Example 2 The method for producing a heterogeneous raw silk composite yarn of this embodiment shown in FIG. 2 is similar to the production method shown in the above-mentioned Example 1, except that the section for producing raw silk from silkworm cocoons is omitted. The raw silk of the other silkworm species, in particular, the silkworm silk, used here as the supply yarn, wound around the supply bobbin 10 or the like is used as the supply yarn, and is passed through a tensioning means 9 ′ such as tensor into the disintegration tank of the silkworm cocoon group. By twisting and twisting with the silkworm silk, and twisting with a winding roller, it was possible to obtain a heterogeneous silk composite yarn of silkworm and silkworm.

Example 3 The method for producing a heterogeneous raw silk composite yarn of this example shown in FIG. 3 is different from the production method shown in Example 1 in that the cocoon thread In addition, the provision of a temperature adjusting means 11 such as a heater for imparting a predetermined reeling tension to the raw material also provided a heterogeneous raw silk composite yarn of the silkworm and the silkworm.

In the production methods shown in the above-mentioned Examples 1 to 3, different types of silkworms and silkworms can be obtained by adjusting the temperature and time of the cocoons of the silkworm cocoons and the silkworm cocoons, the content ratio of the fibers, and the tension applied to the supply yarn. , A core yarn or a covered yarn was produced. Silkworm cocoon and natural silkworm cocoon, their respective cocoon temperature and cocoon processing time,
Specific types of heterogeneous raw silk composite yarn that can be produced when the fiber content ratio or the supply yarn application tension is adjusted will be described based on Examples 4 to 11.

Example 4 When silkworm cocoons, natural silkworm cocoons, and both cocoons were treated at normal cocoon temperature and cocoon time, respectively, regardless of the adjustment of the fiber content ratio or the supply yarn application tension, the silkworm silk and A composite raw yarn obtained by twisting a silkworm raw silk or a heterogeneous raw silk composite yarn characterized by being coated with a silkworm raw silk using the silkworm raw silk as a core yarn, that is, a covered yarn could be produced. In the case of the silkworm cocoon and the silkworm cocoon that have been subjected to the ordinary boiled cocoon treatment, the silkworm cocoon is more likely to become the core thread than the silkworm silk because the thread tension of the silkworm cocoon is larger than that of the silkworm cocoon.

Example 5 In addition, when the silkworm cocoon is treated at the temperature and time of the normal boiled cocoon, and when the silkworm cocoon is treated at a predetermined high temperature for a long time, the silkworm cocoon is adjusted by adjusting the supply yarn applying tension. A heterogeneous raw silk composite yarn characterized by being coated with the raw silk as the core yarn, that is, a core yarn or a covered yarn, could be produced. Here, when the silkworm cocoon is subjected to a cocoon treatment at a high temperature of 90 ° C. or more for 30 minutes or more, the above-mentioned heterogeneous raw silk composite yarn, that is, a core yarn can be produced, but the cocoon treatment at 95 to 100 ° C. for 40 to 60 minutes is performed. In this case, a core yarn having the best covering state was obtained. However, when the temperature and time of the boiled cocoon were not within the ranges, the heterogeneous raw silk composite yarn, that is, the covered yarn could be produced.

Example 6 Further, both the silkworm cocoon and the silkworm cocoon were boiled at a predetermined high temperature for a long time, in particular, here, the silkworm cocoon: 45 to 60 ° C. for 4 to 8 minutes, and the silkworm cocoon: 95 to 100 ° C., 40 to 40 ° C. When the treatment was performed for 60 minutes, a heterogeneous silk composite yarn, that is, a core yarn or a covered yarn, characterized in that silkworm silk was coated with silkworm silk as a core yarn, regardless of the adjustment of the supply yarn application tension. Since the reeling tension of the cocoon thread varies depending on the defibrating tension per grain depending on the silkworm species and the state of the cooked cocoon, and the number of grains (or the fiber content ratio), it is compared with the reeling tension of the cocoon thread for the sheath thread or the covering thread. By using a predetermined tension applying means so that the thread tension of the cocoon yarn for the supply yarn or the core yarn always becomes large, a heterogeneous raw silk composite yarn having a better covering state could be produced. When the cocoon treatment is performed at the above-mentioned predetermined temperature and time, the deflocculating tension per grain is 1.0 to 2.0 gf for the silkworm cocoon and 2.0 g for the silkworm cocoon.
Ｇ3.0 gf.

Example 7 In the production method described in Examples 5 and 6, the fiber content of the silkworm cocoon and the silkworm cocoon is within a predetermined range, that is, the fiber content ratio of the silkworm / silkworm: about 20/80%. 4
At 0/60%, the heterogeneous raw silk composite yarn, that is, the core yarn could be produced. That is, in an example of a cross-sectional electron micrograph of a heterogeneous raw silk composite yarn shown in FIG. 4, a silkworm cocoon group having a cross-sectional shape of a flat isosceles triangle is a silkworm cocoon group having a cross-sectional shape close to an equilateral triangle, or It was confirmed that the silkworm silk was completely wrapped and had a core-sheath-shaped two-layer structure, and that sericin was firmly fixed.

Example 8 However, when the fiber content ratio of the silkworm and the silkworm was not within the above-mentioned range, the heterogeneous raw silk composite yarn, ie, the covered yarn, which was not the core yarn completely covered with the core yarn could be produced. That is, in the example of the cross-sectional electron micrograph of the heterogeneous silk composite yarn shown in FIG. 5, the silkworm cocoon thread group was found to be small due to the low fiber content of the silkworm cocoon or the large fiber content of the silkworm cocoon. It was not possible to obtain a core-sheath structure completely enclosing the silkworm cocoon thread group, but it became a yarn structure other than that, here a two-layer structure like the letter C of the alphabet, and the silkworm silk was exposed on the surface of the composite yarn, It was confirmed that sericin was properly fixed.

Embodiment 9 On the other hand, according to the manufacturing method shown in Embodiment 4, by providing a temperature adjusting means such as a heater in the bunching tank of both cocoons in the machine stand, the silkworm cocoon or the silkworm cocoon can be polished in a predetermined manner. At high temperatures,
When the treatment was carried out for a long time, the same results were obtained as in the production method shown in Examples 5 and 6, and the different raw silk composite yarns shown in Examples 7 and 8 could be produced.

Embodiment 10 In the manufacturing method shown in Embodiments 1 and 3, a plurality of different fining tanks in a machine are used. Can produce similar heterogeneous raw silk composite yarns. In the production methods of Examples 4 and 5, in particular, the use of a single defibration tank was a simple and effective method.
In addition, when using the above-mentioned single mashing tank, the cocoons of different silkworm species are separated into cocoons of the same silkworm species using a metal frame or the like. Arrangement in the vicinity was a more effective method from the viewpoint of the structure of the composite yarn.

Example 11 By combining the production methods of Examples 1 and 3 above, that is, by supplying the composite raw silk produced by the method of Example 1 as the core yarn in the method of Example 3, the raw silk of a different silkworm species can be obtained. A multi-layer composite raw silk twisted into a plurality of layers could be produced.

The production method and the composite yarn of the present invention use raw silk of a different kind of silkworm, and can be applied to all varieties of domestic and wild silkworms. A wide range of new composite raw silk having a good texture can be stably manufactured. In addition, a new composite raw silk in which various types of yarns such as chemical fibers, metal fibers, or natural fibers are combined according to the purpose, for example, using a silk fiber as a core yarn together with silkworm silk as a core yarn or a sheath yarn of the raw silk of each silkworm species. It is also possible to manufacture composite raw yarns for preventing electromagnetic waves, which are twisted with carbon fibers, and special composite raw yarns combined with carbon fibers. Further, in conventional techniques, for example, in a method for producing an entangled composite yarn, a composite raw yarn, or the like, a tension applying means (tenser, etc.) for applying a predetermined tension shown in the present method and a defibrating tank liquid temperature adjusting means (heater, etc.) )
With the addition of, since each yarn path in the composite yarn can be adjusted accurately and easily, it is possible to stably obtain an entangled composite yarn or a composite yarn having a better covering state.

[0020]

According to the present invention, the composite silk of the different silkworm species, that is, the core thread or the covered thread, is a combination of the raw silk of the different silkworm species, both of which are natural materials, so that the properties, luster and texture of each silk are impaired. Not only is it a new composite raw yarn that can fully demonstrate the original yarn strength and complement each other and has a unique luster and texture, but also according to the different raw silk composite yarns of, for example, natural silkworm and silkworm, Although the shape of the silk thread is a natural silk thread called a diamond of fibers, the thread having improved performance due to the inclusion of the silk thread of the silkworm can be produced stably and inexpensively.

[0021]

[Brief description of the drawings]

FIG. 1, FIG. 2, and FIG. 3 are illustrative views each showing an embodiment of the present invention. In the figure, 1 is a raw cocoon group, particularly here, a silkworm cocoon group, 2 is a raw cocoon group, particularly here, a silkworm cocoon group, 3 and 3 ′ are a disintegrating tank part, 4 and 4 ′ are collectors, 5 and 5 ′. Is a yarn guide, 6 is a guide roller, 7 is silkworm silk, 7 'is silkworm silk supply yarn, 8 is heterogeneous silk composite yarn, 9 and 9' are tensor, 10 is a supply yarn bobbin, 1
1 denotes a heater, 12 denotes a take-up roller, and 13 denotes a kennel twisted portion. FIG. 4 is a photograph of one cross section of the heterogeneous raw silk composite yarn of the present invention, that is, the core yarn (fiber content ratio = Tenkai 70
% / Silkworm 30%). FIG. 5 is a photograph of one cross-sectional view of a heterogeneous raw silk composite yarn of the present invention, that is, a covered yarn (fiber content ratio = 51% of silkworm / 49% of silkworm).

Claims (3)

[Claims] 1. A cocoon thread which becomes a core yarn by applying a predetermined tension to a raw yarn as a core yarn of a heterogeneous raw yarn composite yarn, that is, a supply yarn, or by adjusting a bath liquid temperature in a bunching tank section of a yarn reeling machine. A method for producing a heterogeneous raw silk composite yarn, characterized in that a predetermined reeling tension is applied to the yarn. 2. Raw silk of different silkworm species is used as a core yarn and a sheath yarn.
Heterogeneous raw yarn composite yarn twisted to wrap. 3. A twisted heterogeneous silk composite yarn obtained by using a silkworm of a different silkworm species as a core yarn and a covering yarn.