Laminated rubber stopper for a medicament vial
AssigneeDaikyo Seiko, Ltd.
InventorTomoyasu Muraki
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Abstract
The present invention aims at providing an improved thermoplastic film-laminated rubber stopper for a medicament vial, having more sufficient and excellent sealing property as well as barrier effect of permeation, in which the whole lower surface or the whole lower surface and a part of the upper surface of the rubber body is laminated with a thermoplastic film, in particular, tetrafluoroethylene resin film, having a flexural modulus in a range of at most 600 MPa and a coefficient of kinetic friction in a range of at most 0.4.
Claims7
A laminated rubber stopper for a medicament vial, in which the whole lower surface or the whole lower surface and a part of the upper surface of the rubber body is laminated with a thermoplastic film having a flexural modulus of at most 600 MPa, and a coefficient of kinetic friction of at most 0.4, wherein the thermoplastic film is a tetrafluoroethylene resin film or a modified tetrafluoroethylene resin film.
A laminated rubber stopper for a medicament vial, in which the whole lower surface or the whole lower surface and a part of the upper surface of the rubber body is laminated with a thermoplastic film having a flexural modulus of at most 600 MPa, a coefficient of kinetic friction of at most 0.4, and a thickness of 0.001 mm to 0.3 mm, wherein the thermoplastic film is a tetrafluoroethylene resin film or a modified tetrafluoroethylene resin film.
Dependencies are inferred from the claim text.