EP0212339A2
Expired / Lapsed
EP
⏱️ 0.0 years remaining
Bottle-shaped container
Assignee: Yoshino Kogyosho Co Ltd
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Filing: 1983-04-21
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Granted: —
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Expires: 2003-04-21
Abstract
Abstract A hollow two-layer blow-moulded bottle-shaped container having one layer (4 or 7) formed of a biaxially orientated polyethylene terephthalate resin and the other layer (5 or 6) formed of a mixture of polyethylene terephthalate resin and 5 to 50% by weight of a xylene derivative polyamide resin. In this manner, the gas barrier property of the container is enhanced.
Inventors
- 👤 Hideo Kushida
- 👤 Sumio Takahashi
- 👤 Syuichi Koshio
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-11-05 15:22
CPC Classifications
B; B29; B29C; B29C49/00; B29C49/22; B29C45/00; B29C45/16; B29C45/1657; B65; B65D; B65D1/00; B65D1/02; B65D1/0207; B65D1/0215; B29C2949/00; B29C2949/30; B29C2949/3008; B29C2949/3012; B29C2949/3016; B29C2949/302; B29C2949/3024; B29C2949/3026; B29C2949/3032; B29C2949/3034; B29K; B29K2067/00; B29K2077/00; B29K2105/00; B29K2105/25; B29K2105/253; B29K2995/00; B29K2995/0037; B29K2995/0065; B29K2995/0067; B29K2995/0068; B29K2995/0069
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
140 words
A method of making a hollow multi-layer bottle-shaped containe having one layer (4 or 7) formed of a biaxially-orientated polyethylene terephthalate resin and another layer (5 or 6) formed of a synthetic resin material which has gas barrier properties to reduce the leakage of fluid from the container, the two layers being molded onto each other so as to form a strong bond between them in an injection-moulding step for the production of a preformed injection-moulded parison of generally cylindrical wall shape, whereafter the parison is blow-moulded to produce a biaxially-orientated bottle-shaped container, characterised in that, to prevent any substantial weakening of the bond between the two layers during the blow-moulding step, the layer (5 or 6) of synthetic resin material comprises a mixture of polyethylene terephthalate resin and 5 to 50% by weight of a xylene derivative polyamide resin.
Claim 2
Independent Claim
140 words
A method of making a hollow multi-layer bottle-shaped containe having one layer (4 or 7) formed of a biaxially-orientated polyethylene terephthalate resin and another layer (5 or 6) formed of a synthetic resin material which has gas barrier properties to reduce the leakage of fluid from the container, the two layers being molded onto each other so as to form a strong bond between them in an injection-moulding step for the production of a preformed injection-moulded parison of generally cylindrical wall shape, whereafter the parison is blow-moulded to produce a biaxially-orientated bottle-shaped container, characterised in that, to prevent any substantial weakening of the bond between the two layers during the blow-moulding step, the layer (5 or 6) of synthetic resin material comprises a mixture of polyethylene terephthalate resin and 5 to 50% by weight of a xylene derivative polyamide resin.
Claim 3
Dependent Claim
30 words
A method according to claim 1, characterised in that the layer (5 or 6) having gas barrier properties comprises 10 to 30% by weight of a xylene derivative polyamide resin.
Claim 4
Dependent Claim
32 words
A method according to claim 1 or claim 2, characterised in that the layer (5 or 6) having gas barrier properties comprises about 20% by weight of a xylene derivative polyamide resin.
References Cited (Backward Citations)
No citation records indexed.
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