US4463116A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Easily openable liner for vessel closures
Assignee: Toyo Seikan Group Holdings Ltd
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Filing: 1982-11-04
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Granted: 1984-07-31
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Expires: 2002-11-04
Abstract
Abstract Disclosed is a vessel closure provided with an easily openable liner, said liner being composed of an olefin resin or olefin resin composition comprising as a lubricant two different lubricants having different functional characteristics whereby the quantity of the lubricant immigrating to the surface of the liner is effectively controlled within a certain range at temperatures of a broad range and the opening torque of the closure is controlled at a low level at storage temperatures of a broad range.
Inventors
- 👤 Masayasu Koyama
- 👤 Takashi Yazaki
- 👤 Isao Tanikawa
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 00:43
CPC Classifications
B; B65; B65D; B65D53/00; B65D53/06; C; C09; C09J; C09J123/00; C09J123/02; C08; C08L; C08L2666/00; C08L2666/28
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
136 words
An easily openable liner for a vessel closure, said liner comprising an olefin resin or olefin resin composition and as a lubricant a combination of (A) at least one member selected from the group consisting of compounds represented by the formula: R--X (1) wherein R stands for a saturated or unsaturated hydrocarbon group having 3-31 carbon atoms and X stands for an amide group, and (B) at least one member selected from the group consisting of compounds represented by the following formula: R--Y (2) wherein R stands for a saturated or unsaturated aliphatic group having 12-27 carbon atoms and Y stands for a carboxyl group or a hydroxyl group having 8-30 carbon atoms with the proviso that Y is different from X in the formula (1), and that the A/B weight ratio is 5/95 to 95/5.
Claim 2
Dependent Claim
136 words
An easily openable liner for a vessel closure, said liner comprising an olefin resin or olefin resin composition and as a lubricant a combination of (A) at least one member selected from the group consisting of compounds represented by the formula: R--X (1) wherein R stands for a saturated or unsaturated hydrocarbon group having 3-31 carbon atoms and X stands for an amide group, and (B) at least one member selected from the group consisting of compounds represented by the following formula: R--Y (2) wherein R stands for a saturated or unsaturated aliphatic group having 12-27 carbon atoms and Y stands for a carboxyl group or a hydroxyl group having 8-30 carbon atoms with the proviso that Y is different from X in the formula (1), and that the A/B weight ratio is 5/95 to 95/5.
Claim 3
Dependent Claim
37 words
A liner as set forth in claim 1, wherein the compound of the formula (1) is an amide type lubricant and the compound of the formula (2) is a fatty acid, alcohol, amine or hydrocarbon type lubricant.
Claim 4
Dependent Claim
47 words
A liner as set forth in claim 1, wherein the compound of the formula (1) is a fatty acid amide type lubricant having 12 to 22 carbon atoms and the compound of the formula (2) is a fatty acid type lubricant having 12 to 27 carbon atoms.
Claim 5
Dependent Claim
53 words
A liner as set forth in claim 1, wherein the olefin resin composition is a composition comprising 99 to 30% by weight of a crystalline polyolefin, 1 to 70% by weight of a lowly crystalline or amorphous copolymer of ethylene with other olefin and up to 29% by weight of a diene copolymer.
Claim 6
Dependent Claim
62 words
A liner as set forth in any one of claims 1-4, wherein a lubricant comprising the compound of the formula (1) and the compound of the formula (2) at a weight ratio of from 10/90 to 90/10 is incorporated in an amount of 0.05 to 5 parts by weight per 100 parts by weight of the olefin resin or olefin resin composition.
Claim 7
Dependent Claim
125 words
A vessel closure having an easily openable liner, said liner comprising an olefin resin or olefin resin composition and as a lubricant a combination of (a) at least one member selected from the group consisting of compounds represented by the following formula: R--X (1) wherein R stands for a saturated or unsaturated aliphatic hydrocarbon group having 12-22 carbon atoms and X stands for an amide group, and (B) at least one member selected from the group consisting of compounds represented by the following formula: R--Y (2) wherein R is as defined above, and Y stands for a hydroxyl group having 12-30 carbon atoms, with the proviso that Y is different from X in the formula (1), and the A/B weight ratio is 25/75 to 75/25.
Claim 8
Dependent Claim
125 words
A vessel closure having an easily openable liner, said liner comprising an olefin resin or olefin resin composition and as a lubricant a combination of (a) at least one member selected from the group consisting of compounds represented by the following formula: R--X (1) wherein R stands for a saturated or unsaturated aliphatic hydrocarbon group having 12-22 carbon atoms and X stands for an amide group, and (B) at least one member selected from the group consisting of compounds represented by the following formula: R--Y (2) wherein R is as defined above, and Y stands for a hydroxyl group having 12-30 carbon atoms, with the proviso that Y is different from X in the formula (1), and the A/B weight ratio is 25/75 to 75/25.
References Cited (Backward Citations)
US4256234A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1987-07-31 | 1988-01-30 | 1988-07-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1991-07-31 | 1992-01-30 | 1992-07-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1995-07-31 | 1996-01-30 | 1996-07-31 | $7700.00 | Window Closed / Lapsed |