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Title:
COMPOSITE SPOUT AND INJECTION MOLDING APPARATUS FOR MOLDING COMPOSITE SPOUT
Document Type and Number:
WIPO Patent Application WO/2007/102566
Kind Code:
A1
Abstract:
A composite spout in which a sleeve fitted to a core member is not displaced during injection molding and the end face of the sleeve is not exposed to the inside of a spout body. A functional resin layer is provided as an intermediate layer in the sleeve, a spout body is injection-molded with the sleeve that functions as a core and is put over the core member of an injection molding die. Therefore, substantially only the inner peripheral surface of the sleeve is exposed to the inner peripheral surface of the spout body. At least a circumferential part of one end of the inner peripheral surface of the spout body meets the inner peripheral edge on one end side of the sleeve or forms a slope radially outwardly tilting from the part of the spout body toward the one end of the spout body.

Inventors:
KUROSAWA, Takahiro (22-4 Okazawa-cho, Hodogaya-ku, Yokohama-sh, Kanagawa 62, 2400062, JP)
黒澤高博 (〒62 神奈川県横浜市保土ヶ谷区岡沢町22番地4東洋製罐グループ綜合研究所内 Kanagawa, 2400062, JP)
TAKEUCHI, Kimio (22-4 Okazawa-cho, Hodogaya-ku, Yokohama-sh, Kanagawa 62, 2400062, JP)
竹内公生 (〒62 神奈川県横浜市保土ヶ谷区岡沢町22番地4東洋製罐グループ綜合研究所内 Kanagawa, 2400062, JP)
HASHIMOTO, Katsumi (2-12, Nagatoro, Hiratsuka-sh, Kanagawa 21, 2540021, JP)
橋本勝己 (〒21 神奈川県平塚市長瀞2番12号日本クラウンンコルク株式会社技術開発センター内 Kanagawa, 2540021, JP)
Application Number:
JP2007/054497
Publication Date:
September 13, 2007
Filing Date:
March 01, 2007
Export Citation:
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Assignee:
TOYO SEIKAN KAISHA, LTD. (3-1 Uchisaiwai-cho 1-chome, Chiyoda-ku Tokyo, 22, 1008522, JP)
東洋製罐株式会社 (〒22 東京都千代田区内幸町1丁目3番1号 Tokyo, 1008522, JP)
JAPAN CROWN CORK CO., LTD. (3-1 Uchisaiwai-cho 1-chome, Chiyoda-ku Tokyo, 11, 1000011, JP)
日本クラウンコルク株式会社 (〒11 東京都千代田区内幸町1丁目3番1号 Tokyo, 1000011, JP)
KUROSAWA, Takahiro (22-4 Okazawa-cho, Hodogaya-ku, Yokohama-sh, Kanagawa 62, 2400062, JP)
黒澤高博 (〒62 神奈川県横浜市保土ヶ谷区岡沢町22番地4東洋製罐グループ綜合研究所内 Kanagawa, 2400062, JP)
TAKEUCHI, Kimio (22-4 Okazawa-cho, Hodogaya-ku, Yokohama-sh, Kanagawa 62, 2400062, JP)
竹内公生 (〒62 神奈川県横浜市保土ヶ谷区岡沢町22番地4東洋製罐グループ綜合研究所内 Kanagawa, 2400062, JP)
International Classes:
B65D33/38; B29C33/12; B29C45/14; B29L23/00
Attorney, Agent or Firm:
ONO, Hisazumi et al. (Nippon Shuzo bldg, 1-21 Nishi-shimbashi 1-chome Minato-k, Tokyo 03, 1050003, JP)
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