Title:
熱収縮チューブの製造方法
Document Type and Number:
Japanese Patent JP6829164
Kind Code:
B2
Abstract:
To provide a production method of a heat shrinkable tube capable of achieving a uniform tube diameter.SOLUTION: A production method of a heat shrinkable tube of the present invention comprises a heating step of heating a tube formed by a resin composition to a temperature equal to or higher than the melting point while conveying it in an axial direction, a diameter expanding step of expanding a diameter of the heated tube, and a cooling step of cooling the diameter-expanded tube. The diameter expanding step includes a gas supplying step of supplying a gas into the tube from a downstream side in the tube conveying direction, and in the gas supplying step, control is performed to keep a flow rate under a supply pressure of the gas supplied into the tube constant.SELECTED DRAWING: Figure 1
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| JPH01152039 | HEAT-SHRINKABLE TUBE |
Inventors:
Koji Muto
Hiroshi Harada
Tetsuya Fujiwara
Hiroya Sano
Hiroshi Harada
Tetsuya Fujiwara
Hiroya Sano
Application Number:
JP2017154053A
Publication Date:
February 10, 2021
Filing Date:
August 09, 2017
Export Citation:
Assignee:
Sumitomo Electric Fine Polymer Co., Ltd.
Sumitomo Electric Industries, Ltd.
Sumitomo Electric Industries, Ltd.
International Classes:
B29C61/08; B29C55/24
Domestic Patent References:
| JP62113532A | ||||
| JP61180717U |
Attorney, Agent or Firm:
Hajime Amano
Yoshinori Ikeda
Hiroshi Ogawa
Koji Ishida
Kenichi Fujinaka
Yoshinori Ikeda
Hiroshi Ogawa
Koji Ishida
Kenichi Fujinaka