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Patent Searching and Data


Title:
METHOD FOR PRODUCING DELAMINATION CONTAINER AND APPARATUS FOR PRODUCING DELAMINATION CONTAINER
Document Type and Number:
WIPO Patent Application WO/2021/060459
Kind Code:
A1
Abstract:
The present invention comprises: an injection molding step for injection molding a preform (10) of a two-layer structure, said preform (10) having an outer preform (60) and an inner preform (80); and a blow molding step for molding a resin delamination container by blow molding the preform (10). The injection molding step comprises: an outer layer molding step wherein the outer preform (60) is molded by filling an outer layer injection mold (50) with a PET (a resin material for outer layers), while molding a thin film part (61) in a part of the outer preform (60); and an inner layer molding step wherein the thin film part (61) is ruptured by injecting a PP (a resin material for inner layers) toward the thin film part (61), and the inner preform (80) is molded by filling an inner layer injection mold (70) with the PP, which is at a temperature lower than the melting point of the PET, through the ruptured thin film part (61).

Inventors:
TSUCHIYA YOICHI (JP)
HORIGOME HIROSHI (JP)
Application Number:
PCT/JP2020/036251
Publication Date:
April 01, 2021
Filing Date:
September 25, 2020
Export Citation:
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Assignee:
NISSEI ASB MACHINE CO LTD (JP)
International Classes:
B29C45/16; B29C45/28; B29C49/06; B29C49/22; B65D1/02
Foreign References:
JP2001105478A2001-04-17
JP2000351151A2000-12-19
Attorney, Agent or Firm:
SHIN-EI PATENT FIRM, P.C. (JP)
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