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Title:
METHOD FOR MANUFACTURING RESIN PIPE JOINT
Document Type and Number:
WIPO Patent Application WO/2018/025519
Kind Code:
A1
Abstract:
Provided is a method for manufacturing a resin pipe joint by which the quality of a resin pipe joint can be improved. The method for manufacturing a resin pipe joint provided with a joint body is provided with: a step of preparing a molding mold having a first mold 65 for forming an outer shape of the joint body and a second mold 66 for forming an inner shape of the joint body, and a supply device 62 for supplying molten resin material; a step of combining the second mold with the first mold so that a cavity 88 into which the molten resin material can be injected is formed inside the molding mold; a step of supplying the molten resin material to the cavity in the molding mold; and a step of solidifying the molten resin material in the cavity after the supply of the molten resin material from the supply device is stopped. The second mold is provided with a gap 81 that communicatively connects the cavity and an ejection space outside the cavity to each other and allows the flow of gas when the second mold is combined with the first mold.

Inventors:
MIYAMOTO Masaki (7-1, Shinmachi 1-chome, Nishi-ku, Osaka-sh, Osaka 13, 〒5500013, JP)
YAMADA Masateru (7-1, Shinmachi 1-chome, Nishi-ku, Osaka-sh, Osaka 13, 〒5500013, JP)
TESHIMA Kazukiyo (7-1, Shinmachi 1-chome, Nishi-ku, Osaka-sh, Osaka 13, 〒5500013, JP)
SAKAMOTO Hiroki (7-1, Shinmachi 1-chome, Nishi-ku, Osaka-sh, Osaka 13, 〒5500013, JP)
IIDA Toshihide (7-1, Shinmachi 1-chome, Nishi-ku, Osaka-sh, Osaka 13, 〒5500013, JP)
KOIKE Tomoyuki (7-1, Shinmachi 1-chome, Nishi-ku, Osaka-sh, Osaka 13, 〒5500013, JP)
NARUO Motoaki (7-1, Shinmachi 1-chome, Nishi-ku, Osaka-sh, Osaka 13, 〒5500013, JP)
Application Number:
JP2017/022139
Publication Date:
February 08, 2018
Filing Date:
June 15, 2017
Export Citation:
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Assignee:
NIPPON PILLAR PACKING CO., LTD. (7-1 Shinmachi 1-chome, Nishi-ku Osaka-sh, Osaka 13, 〒5500013, JP)
International Classes:
B29C45/34; B29C45/00; F16L21/08; F16L47/10
Attorney, Agent or Firm:
SUZUE Shoji (Umeda East Building, 5-15 Taiyujicho, Kita-ku, Osaka-sh, Osaka 51, 〒5300051, JP)
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