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Bagworm silk thread collecting method

A moth larvae and silk technology, applied in the field of nest raw materials, can solve the problems of huge labor time, no collection, low-quality products, etc.

Active Publication Date: 2020-08-21
NAT AGRI & FOOD RES ORG +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the removal of these impurities requires a lot of labor time
In addition, in the prior art, there were problems such as that impurities could not be completely removed, there were very few leaflets mixed in the final product, and the silk silk of bag moth larvae was dyed light brown due to pigments derived from impurities, etc. , only low-quality products can be obtained
Decolorization treatment using alkali or acid for the purpose of removing the pigment can be carried out, but the strength of the silk silk of the bag moth larvae is impaired, resulting in a significant decrease in quality
The above-mentioned problems must be solved when the silk of bag moth larvae is put into practical use, but there has been no method of collecting pure and high-quality bag moth larva silk that does not contain impurities and is free of pollution.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0187]

[0188] (Purpose)

[0189] Using a low-polarity solvent-soluble nest raw material for naked bag moth larvae, a bag moth larvae nest is produced, and further, bag moth larvae silk is collected from the nest.

[0190] (method and results)

[0191] As the bag moth larvae, the last instar larvae of the tea bag moth collected at a fruit tree farm in Tsukuba City, Ibaraki Prefecture were used. The collected bag moth larvae were fed with leaves of a sufficient amount of broad-leaved trees for 3 days. After defecating in a fasted state for one day, the bag moth larvae in the nest were picked out from the bag moth larvae nest using scissors.

[0192] exist figure 2The silk picking method of the present invention is illustrated in the figure. On the bottom of a 100mL glass beaker, thin rod-shaped styrofoam (polystyrene) flakes adjusted to a length of 20 mm to 25 mm were covered as a low-polarity solvent-soluble nest material, and the beaker was set on a transparent plasti...

Embodiment 2

[0195]

[0196] (Purpose)

[0197] The larvae of the naked bag moth were made into a nest of the bag moth larvae using a water-soluble nest material, and the silk silk of the bag moth larvae was collected from the nest.

[0198] (method and results)

[0199] As for the bag moth larvae, in the same manner as in Example 1, the last instar larvae of the bag moth were collected at a fruit tree farm in Fuji City, Shizuoka Prefecture. The basic operation follows Example 1.

[0200] exist image 3 The silk picking method of the present invention is illustrated in the figure. On the bottom of a 500 mL glass beaker, gelatin hard capsules (TORPAC: experimental gelatin capsules) cut into 9 mm to 20 mm laminar pieces were spread as water-soluble nest materials. The larvae (full length: 20 mm) taken out from the nest were placed on gelatin chips in a beaker, and left at 25° C. under atmospheric pressure (a). Three days later, the bag moth larval nest (b) newly produced using the gel...

Embodiment 3

[0203]

[0204] (Purpose)

[0205] The larvae of the naked bag moth were made into a nest of the bag moth larvae using a thermofusible nest material, and the silk thread of the bag moth larvae was collected from the nest.

[0206] (method and results)

[0207] As for the bag moth larvae, the last instar larvae of the bag moth were collected from a fruit tree farm in Tsukuba City, Ibaraki Prefecture in the same manner as in Example 1. The basic operation of preparing naked bag moth larvae is according to Example 1.

[0208] exist Figure 4 The silk picking method of the present invention is illustrated in the figure. At the bottom of a 100mL glass beaker, spread beeswax (manufactured by Yamada Bee Farm) prepared in the shape of a thin layer of 10-20mm in length and a thin rod of 10mm-20mm as a heat-fusible nest material, so that The beaker is set on the clear plastic housing in such a way that the bottom edge also lets in the light. The larvae (full length: 25 mm) taken ...

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Abstract

Developed and provided is a method by which bagworm silk is collected from a bagworm nest easily, in large amounts, and at a low cost, such silk not containing impurities and being of high quality. Byutilizing the behavior of bagworms, only the pure bagworm silk forming a bagworm nest can be obtained by causing the bagworms to build a nest with a nest material of a solvent soluble material and aneasily-heat-soluble material, dissolving or melting the nest material, and separating the nest material and the bagworm silk.

Description

technical field [0001] The present invention relates to a method of harvesting silk derived from larvae of moths belonging to the Lymphidae family, ie, the larvae of the bag moth, a nonwoven fabric obtained by the silk harvesting method, and a nest material used in the method. Background technique [0002] Silk constituting the cocoons of insects and hair of mammals have been used as animal fibers for clothing and the like since ancient times. In particular, silkworm silk (in this specification, often expressed as "silk silk") derived from silkworm (Bombyx mori) larvae is excellent in moisture absorption and desorption, moisture retention, and heat retention, and has a unique luster. and smooth skin feel, so it is valued as a high-quality natural material even now. [0003] However, in nature, there are animal fibers that are comparable to silk silk or have properties superior to silk silk. In recent years, in order to effectively use animal fibers having such excellent ch...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D01C3/02A01K67/033D01B7/00
CPCD01B7/06D01C3/00A01K67/04D04H1/04D04H1/09D01F4/00D01C3/02Y02P60/87
Inventor 吉冈太阳龟田恒德浅沼章宗佐佐博纪
Owner NAT AGRI & FOOD RES ORG
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