Apparatus for producing a bagworm silk thread, and method of producing long bagworm silk thread

Patent metadata

Field	Value
Publication number	US-12408643-B2
Application number	US-202318297360-A
Country	US
Kind code	B2
Filing date	Apr 7, 2023
Priority date	Dec 4, 2018
Publication date	Sep 9, 2025
Grant date	Sep 9, 2025

Abstract

Disclosed is a method of efficiently producing a long bagworm silk thread containing no contaminant while preventing a change in the spinning direction and the runaway of the bagworm from a rail, and alleviating a burden on the bagworm; and an apparatus for implementing the thread-producing method. Provided is an apparatus for producing a bagworm silk thread, having a movable rail having a width smaller than the maximum width between the right and left legs of a bagworm and configured to move in the longitudinal direction and to be able to hold with the legs of the bagworm; and a fixator configured to fix a bagworm, wherein the fixator is placed at a position such that the fixed bagworm can hold the movable rail.

First claim

The invention claimed is:

1. A method of producing a bagworm silk thread from a bagworm, comprising
a spinning process of making the bagworm hold a rail with its legs and continuously spin along the rail, wherein
the rail has a width smaller than a maximum width between right and left legs of the bagworm for use, and is configured to be able to be held by the legs of the bagworm, and
in the spinning process, the bagworm separated from a nest or a nest containing the bagworm is fixed at a position such that the legs of each bagworm can hold the rail,
wherein the rail is configured to be moved in a longitudinal direction of the rail automatically and/or by a movement impelling force of the bagworm legs.

2. A method of producing a long bagworm silk thread, comprising:
a spinning process of making a bagworm or the bagworm having a nest hold a rail with its legs and continuously spin along the rail, wherein
the rail has a width smaller than a maximum width between right and left legs of the bagworm used for thread production, and is configured such that the legs of the bagworm can hold the rail;
a contacting process of bringing a bagworm silk thread on the rail in contact with a peeling solution and/or vapor; and
a collection process of peeling the bagworm silk thread from the rail after the contacting process to collect the bagworm silk thread,
wherein in the spinning process, the bagworm separated from a nest or a nest containing the bagworm is fixed at a position such that the legs of the bagworm can hold the rail,
wherein the rail is configured to be moved in a longitudinal direction of the rail automatically and/or by a movement impelling force of the bagworm legs.

3. The method according to claim 2 , further comprising a degumming process of degumming the bagworm silk thread during the contacting process, during the collection process, and/or after the collection process.

4. The method according to claim 2 , further comprising a twisting process of twisting the bagworm silk thread after the collection process and/or after the degumming process.

5. The method according to claim 1 , wherein the rail is loop-shaped.

Assignees

• Nat Agriculture & Food Res Org
• Kowa Co

Inventors

• Yoshioka Taiyo
• Kameda Tsunenori
• Kitamura Takahiro
• Asanuma Akimune

Classifications

• D01B7/00 Primary

  Obtaining silk fibres or filaments · CPC title

• D01B7/04

  Reeling silk · CPC title

• A01K67/35 Primary

  Silkworms · CPC title