Patent US4680208A successfully refreshed from Google Patents.
US4680208A
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Biaxially oriented plastic container with excellent heat-resistance and gas barrier properties
Assignee: Nissei ASB Machine Co Ltd
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Filing: 1985-02-28
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Granted: 1987-07-14
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Expires: 2005-02-28
Abstract
Abstract A biaxially oriented plastic container having, in section, three layers formed by concentrically injecting two types of plastic into a cavity to mold a bottomed parison and stretch-blow molding said parison to form a biaxially oriented container with excellent heat-resistance and gas barrier properties; said two types of plastic having between them an intermediate layer of plastic having selected lengths of glass fiber.
Inventors
- 👤 Daiichi Aoki
- 👤 Yoshinori Nakamura
- 👤 Hiroyuki Orimoto
- 👤 Kazumi Machida
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 17:51
CPC Classifications
B; B32; B32B; B32B27/00; B32B27/06; B32B27/08; B29; B29C; B29C45/00; B29C45/16; B29C45/1642; B29C45/1646; B29C49/00; B29C49/0005; B29C49/0006; B29C49/22; B32B1/00; B32B27/30; B32B27/306; B32B27/34; B32B27/36; B65; B65D; B65D1/00; B65D1/02; B65D1/0207; B65D1/0215; B29C2045/1648; B29C2949/00; B29C2949/07; B29C2949/081; B29C2949/0829; B29C2949/0837; B29C2949/30; B29C2949/3008; B29C2949/3012; B29C2949/3016; B29C2949/302; B29C2949/3024; B29C2949/3026; B29C2949/3028; B29C2949/3032; B29K; B29K2105/00; B29K2105/06; B29K2105/12; B29K2105/25; B29K2105/253; B29K2995/00; B29K2995/0037; B29K2995/0065; B29K2995/0068; B29K2995/0069; B32B2262/00; B32B2262/10; B32B2262/101; B32B2307/00; B32B2307/30; B32B2307/306; B32B2307/50; B32B2307/514; B32B2307/518; B32B2307/70; B32B2307/724; B32B2439/00; B32B2439/40; B32B2439/60; Y; Y10; Y10T; Y10T428/00; Y10T428/13; Y10T428/131; Y10T428/1314; Y10T428/1352; Y10T428/1379; Y10T428/1383
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
114 words
In a biaxially oriented container having three layers in section obtained by concentrically injecting two kinds of plastics into a cavity to mold a bottomed parison and stretch-blow molding said parison to form said biaxially oriented container with excellent heat-resistance and gas barrier properties, an intermediate layer of said container being formed of plastic containing selected lengths of glass fiber; said glass fiber having a length of 1-4 mm and being present in a percentage of 0.5-3.0 percent by weight with respect to said plastic which forms said intermediate layer, said plastic material of said intermediate layer being selected from the group consisting of polyethylene terephthalate, saponified ethylene-vinylacetate copolymer, ethylene-vinylalcohol copolymer, and m-xylene-type polyamide.
Claim 2
Dependent Claim
114 words
In a biaxially oriented container having three layers in section obtained by concentrically injecting two kinds of plastics into a cavity to mold a bottomed parison and stretch-blow molding said parison to form said biaxially oriented container with excellent heat-resistance and gas barrier properties, an intermediate layer of said container being formed of plastic containing selected lengths of glass fiber; said glass fiber having a length of 1-4 mm and being present in a percentage of 0.5-3.0 percent by weight with respect to said plastic which forms said intermediate layer, said plastic material of said intermediate layer being selected from the group consisting of polyethylene terephthalate, saponified ethylene-vinylacetate copolymer, ethylene-vinylalcohol copolymer, and m-xylene-type polyamide.
Claim 3
Dependent Claim
32 words
A biaxially oriented container with excellent heat-resistance and gas barrier properties as defined in claim 1 in which the plastic for forming said intermediate layer comprises plastic with excellent gas barrier properties.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1990-07-13 | 1991-01-12 | 1991-07-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1994-07-13 | 1995-01-12 | 1995-07-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1998-07-13 | 1999-01-12 | 1999-07-14 | $7700.00 | Window Closed / Lapsed |