Factory-like silkworm breeding raw silk crepe pecan

Abstract

The utility model discloses a factory-like silkworm breeding raw silk crepe crepe line which is formed by combining, twisting and shaping a medium-twist thick silk and a weak-twist thin silk, and the medium-twist thick silk is wrapped outside the weak-twist thin silk. According to the method, the advantages of the industrial silkworm rearing raw silk and the advantages of the mulberry silkworm rearing raw silk fed with the mulberry leaves can be fully exerted, the application field of the industrial silkworm rearing raw silk is widened, the production cost of the raw silk crepe-pecine is reduced, and the method has huge application value.

Description

Technical Field

[0001] This utility model relates to the technical field of textiles, and in particular to a factory-produced raw silk crepe yarn. Background Technology

[0002] Crepe yarn is a medium-twist yarn, made by combining a thicker twisted yarn with a thinner untwisted yarn and then twisting them in the opposite direction. The untwisted yarn shrinks due to the twisting, while the thicker yarn is twisted in the opposite direction, which makes the shrinkage disappear. This alternating tension and relaxation results in a linear structure where a thinner flat yarn acts as the core yarn and a thicker twisted yarn is evenly wrapped around the core yarn under low tension. The yarn is soft, fluffy and elastic, and the fabric surface presents a subtle water ripple pattern.

[0003] Existing types of crepe silk typically use raw silk from silkworms fed with mulberry leaves. This method relies on fresh mulberry leaves, making it dependent on seasonal and climatic conditions, resulting in inconsistent quality and high costs. Factory silkworm rearing, a modern approach, places traditional silkworms in a fully enclosed, temperature- and humidity-controlled environment, feeding them artificial feed to complete their growth cycle. This eliminates reliance on fresh mulberry leaves and seasonal and climatic dependence, offering advantages such as high efficiency, pollution resistance, high standardization, intensification, and intelligence. It solves the problem of resource depletion, reduces cocoon costs, and improves the cost-effectiveness of raw silk fibers. However, for the same grade of silk thread, factory-raised raw silk has a slightly higher breaking elongation than mulberry-leaf-fed silk, while its crystallinity and breaking strength are slightly lower. This leads to increased thread breakage during weaving, severely impacting weaving efficiency. Consequently, factory-raised raw silk is currently mainly used in the production of products such as silk quilts, with low added value.

[0004] Therefore, developing a factory-raised silk crepe yarn can fully leverage the advantages of both factory-raised silk and mulberry leaf-fed silk, broaden the application areas of factory-raised silk, and reduce the production cost of silk crepe yarn, thus having significant application value. Summary of the Invention

[0005] The purpose of this invention is to solve the problems in the existing technology and propose a factory-raised silk crepe yarn that can give full play to the advantages of both factory-raised silk and mulberry leaf-fed silk, broaden the application field of factory-raised silk, and reduce the production cost of silk crepe yarn, thus having great application value.

[0006] To achieve the above objectives, this utility model proposes a factory-produced raw silk crepe yarn, which is made by combining a coarse filament with medium twist and a fine filament with weak twist, through a process of combining, twisting, and shaping, wherein the fine filament with weak twist is wrapped around the coarse filament with medium twist.

[0007] Preferably, the coarse filament is made by combining, twisting, and shaping several raw silk threads fed with mulberry leaves, while the fine filament is made by combining, twisting, and shaping several raw silk threads raised in factories.

[0008] Preferably, the direction of twisting the coarse filament is opposite to the direction of twisting the fine filament.

[0009] Preferably, two 20 / 22D factory-raised silkworm raw silks are combined, weakly twisted in the Z direction, and shaped to form fine silk; four 20 / 22D mulberry leaf-fed silkworm raw silks are combined, medium twisted in the S direction, and shaped to form coarse silk.

[0010] Preferably, the coarse filaments and fine filaments are combined and twisted in the Z direction, with a twist of 15 twists / cm.

[0011] Preferably, the twist of the coarse filament is 10-20 twists / cm, the twist of the fine filament is less than 10 twists / cm, and the twist of the coarse filament is greater than the twist of the fine filament.

[0012] Preferably, the twist of the coarse filament is 20 twists / cm, and the twist of the fine filament is 5 twists / cm.

[0013] Preferably, the ratio of the denier of the coarse filament to the fine filament is between 2:1 and 5:1.

[0014] The beneficial effects of this utility model are as follows: By using raw silk from factory-raised silkworms as the fine filament, located at the center of the crepe yarn, the high breaking elongation of factory-raised silkworm raw silk is effectively utilized, the production cost of crepe yarn is effectively reduced, and the application field of factory-raised silkworm raw silk is significantly broadened. Using raw silk from mulberry leaf-fed silkworms as the coarse filament, it naturally surrounds the fine filament, making the resulting factory-raised silkworm raw silk crepe yarn soft and elastic to the touch, and leveraging the good abrasion resistance of mulberry leaf-fed silkworm raw silk. The woven fabric has a water-wave crepe texture. Compared with existing technologies, this invention fully utilizes the advantages of both factory-raised silkworm raw silk and mulberry leaf-fed silkworm raw silk, broadening the application field of factory-raised silkworm raw silk and reducing the production cost of raw silk crepe yarn, thus possessing significant application value.

[0015] The features and advantages of this utility model will be described in detail through embodiments and accompanying drawings. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the structure of a factory-produced raw silk crepe yarn for silkworm rearing according to this utility model;

[0017] Figure 2 This utility model presents a flowchart of the preparation process of raw silk crepe yarn produced by industrialized silkworm rearing.

[0018] In the diagram: 1 - coarse filament, 2 - fine filament. Detailed Implementation

[0019] See Figure 1 , Figure 2 This utility model relates to a factory-produced raw silk crepe yarn, which is made by combining, twisting and shaping a coarse filament 1 with medium twist and a fine filament 2 with weak twist. The fine filament 2 with weak twist is wrapped around the coarse filament 1 with medium twist.

[0020] The coarse filament 1 is made by combining, twisting, and shaping several raw silk threads fed on mulberry leaves, while the fine filament 2 is made by combining, twisting, and shaping several raw silk threads raised in a factory.

[0021] The direction of twisting the coarse filament 1 is opposite to the direction of twisting the fine filament 2.

[0022] Two 20 / 22D raw silkworms raised in factories are combined, weakly twisted in the Z direction, and shaped to form fine silk 2; four 20 / 22D raw silkworms fed with mulberry leaves are combined, medium twisted in the S direction, and shaped to form coarse silk 1.

[0023] The coarse filament 1 and the fine filament 2 are combined and twisted in the Z direction, with a twist of 15 twists / cm.

[0024] The twist of the coarse filament 1 is 10-20 twists / cm, and the twist of the fine filament 2 is less than 10 twists / cm. The twist of the coarse filament 1 is greater than the twist of the fine filament 2.

[0025] The coarse filament 1 has a twist of 20 twists / cm, and the fine filament 2 has a twist of 5 twists / cm.

[0026] The fineness ratio of the combined coarse filament 1 and fine filament 2 is between 2:1 and 5:1.

[0027] The working process of this utility model:

[0028] This utility model relates to a factory-raised silkworm raw silk crepe yarn. In the process, firstly, two 20 / 22D factory-raised silkworm raw silks are combined, lightly twisted in the Z direction (5 twists / cm), and shaped to form a fine filament. Then, four 20 / 22D mulberry leaf-fed silkworm raw silks are combined, lightly twisted in the S direction (20 twists / cm), and shaped to form a coarse filament. Next, the coarse and fine filaments are combined, lightly twisted in the Z direction (15 twists / cm), and shaped. After this re-twisting, the coarse filament relaxes and naturally wraps around the fine filament, resulting in a factory-raised silkworm raw silk crepe yarn that is soft and elastic to the touch. It also leverages the good abrasion resistance of mulberry leaf-fed silkworm raw silk, creating a wavy crepe pattern on the fabric surface. The fine filament shrinks, increasing its breaking strength, naturally placing it at the center of the yarn, and effectively utilizing its high breaking elongation.

[0029] The raw silk used in factory-raised silkworms is positioned at the center of the crepe yarn, effectively utilizing its high breaking elongation and significantly reducing production costs. This broadens the application range of factory-raised silkworm raw silk. Meanwhile, the raw silk from mulberry leaf-fed silkworms is used as the coarse silk, naturally surrounding the fine silk. This results in a soft and elastic crepe yarn with the advantage of good abrasion resistance, while also leveraging the good abrasion resistance of mulberry leaf-fed silkworm raw silk. The woven fabric exhibits a water-wave crepe texture. Compared to existing technologies, this method fully utilizes the advantages of both factory-raised and mulberry leaf-fed silkworm raw silk, expanding the application range of factory-raised silkworm raw silk and reducing production costs, demonstrating significant application value.

[0030] The above embodiments are illustrative of the present invention and are not intended to limit the present invention. Any simple modifications to the present invention are within the protection scope of the present invention.

Claims

1. A factory reared cocoon based peignoir yarn, characterized in that: A thick yarn (1) with medium twist and a thin yarn (2) with weak twist are used, the thin yarn (2) embracing the thick yarn (1).

2. A factory reared silkworm cocoon based crepe yarn as claimed in claim 1 wherein: The thick yarn (1) is composed of several mulberry leaf fed silkworm raw silk, and the thin yarn (2) is composed of several factory reared raw silk.

3. A factory reared silkworm cocoon based crepe yarn as claimed in claim 2 wherein: The thick yarn (1) is twisted in the opposite direction of the thin yarn (2).

4. A factory reared silkworm cocoon based crepe yarn as claimed in claim 3 wherein: Two 20 / 22D factory reared raw silk are used to form the thin yarn (2), and four 20 / 22D mulberry leaf fed silkworm raw silk are used to form the thick yarn (1).

5. A factory reared silkworm silk piece dyed crepe yarn as claimed in claim 4 wherein: The thick yarn (1) and the thin yarn (2) are combined with twist in Z direction, and the twist is 15 twists per centimeter.

6. A factory reared silkworm silk piece dyed crepe yarn as claimed in claim 1 wherein: The twist of the thick yarn (1) is 10-20 twists per centimeter, and the twist of the thin yarn (2) is less than 10 twists per centimeter, and the twist of the thick yarn (1) is greater than that of the thin yarn (2).

7. A factory reared silkworm silk piece dyed crepe yarn as claimed in claim 6 wherein: The twist of the thick yarn (1) is 20 twists per centimeter, and the twist of the thin yarn (2) is 5 twists per centimeter.

8. A factory reared silkworm silk piece dyed crepe yarn as claimed in any one of claims 1 to 7 wherein: The combined fineness ratio of the thick yarn (1) and the thin yarn (2) is between 2:1 and 5:1.

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