EP0294127A2
Expired / Lapsed
EP
⏱️ 0.0 years remaining
Resin-laminated rubber stopper
Assignee: DAIKYO GOMU SEIKO Ltd
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Filing: 1988-05-27
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Granted: —
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Expires: 2008-05-27
Abstract
Abstract The stopper has a head portion (1) the upper surface of which is laminated with a fluorine resin film (G₁), and a body portion (2) protruding from the head, the body portion being inserted into the vial, and being partly or completely laminated with a fluorine resin film (G₂). The resin laminated rubber stopper (c) for a medical vial or bottle (A), has better sliding and mechanical transporting properties and reduced contamination due to fine particles from silicone oils and needle piercing fragments.
Inventors
- 👤 Tamotsu C/O Daikyo Gomu Seiko Ltd Okuda
- 👤 Tomoyasu Muraki
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-10-29 22:52
CPC Classifications
B; B65; B65D; B65D51/00; B65D51/002
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
87 words
A resin laminated rubber stopper (c) for a medical vial or bottle (A), having a rubber body (2) for insertion into the mouth (B) of the vial or bottle, and a head (1) having an upper and a lower surface (5), the body protruding from the lower surface of the head, characterised in that the upper surface of the head is laminated with a fluorine resin film (G₁) and at least a part of a surface of the body is laminated with a fluorine resin film (G₂).
Claim 2
Dependent Claim
87 words
A resin laminated rubber stopper (c) for a medical vial or bottle (A), having a rubber body (2) for insertion into the mouth (B) of the vial or bottle, and a head (1) having an upper and a lower surface (5), the body protruding from the lower surface of the head, characterised in that the upper surface of the head is laminated with a fluorine resin film (G₁) and at least a part of a surface of the body is laminated with a fluorine resin film (G₂).
Claim 3
Dependent Claim
29 words
A resin laminated rubber stopper (c) as claimed in claim 1 characterised in that the entire surface of the body (2) is laminated with a fluorine resin film (G₂).
Claim 4
Dependent Claim
31 words
A resin laminated rubber stopper (c) as claimed in claim 1 or claim 2, characterised in that the lower surface of the head (5) is laminated with a fluorine resin (G₂).
Claim 5
Dependent Claim
52 words
A resin laminated rubber stopper (c) as claimed in claim 1, claim 2 or claim 3, characterised in that the fluorine resin film (G₁, G₂) is of a member selected from the group consisting of tetrafluoroethylene-ethylene copolymers, tetrafluoroethylene-hexafluoropropylene copolymers, tetrafluoroethylene-perfluoroalkyl vinyl ethers copolymers, chlorotrifluoroethylene-ethylene copolymers, polyvinyl fluoride, polyvinylidene fluoride, polychlorotrifluoethylene and polytetrafluoroethylene.
Claim 6
Dependent Claim
36 words
A resin laminated rubber stopper (c) as claimed in any one of the preceding claims, characterised in that the thickness of the fluorine resin film (G₁, G₂) is in the range of 0.01 to 0.2 mm.
Claim 7
Dependent Claim
40 words
A resin laminated rubber stopper (c) as claimed in any one of the preceding claims, characterised in that the fluorine resin film (G₁, G₂) is subjected to pretreatment by corona discharge, plasma discharge, glow discharge, arc discharge or sputter etching.
Claim 8
Dependent Claim
31 words
A resin laminated rubber stopper (c) as claimed in any one of the preceding claims, characterised in that the fluorine resin film (G₁, G₂) is cleaned or undercoated with a primer.
Claim 9
Dependent Claim
30 words
A resin laminated rubber stopper (c) as claimed in claim 7, characterised in that the primer is selected from the group consisting of silicone compounds, epoxy resins and chloroprene rubbers.
References Cited (Backward Citations)
No citation records indexed.
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