PISTON WITH FLEXIBLE CLOSURE FOR AEROSOL CONTAINER
First Claim
1. A piston for a container,wherein the piston has a sidewall, an upper side and a bottom side, and at least a first circumferential seal,wherein at least the upper side of the piston is closed by a closure, andwherein the upper side is made of a first, elastic material,wherein the upper side is configured to deform upon a pressure change acting on the upper side,wherein the sidewall is made of a second material which is different from the first elastic material,wherein the first circumferential seal is positioned on the sidewall on its outer surface.
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Accused Products
Abstract
The invention relates to a piston for an optionally pressurized container, the piston having a sidewall, an upper side and a bottom side, and at least a first circumferential seal, wherein at least the upper side of the piston is closed by a closure and made of a first elastic material, wherein the upper side is configured to deform upon a pressure change acting on the upper side, wherein the sidewall is made of a second material which is different from the first elastic material, wherein the first circumferential seal is positioned on the sidewall on its outer surface. The invention further relates to an optionally pressurized container comprising a piston as mentioned above, to a process of discharging a product from said container and to a process of manufacturing said container.
18 Citations
16 Claims
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1. A piston for a container,
wherein the piston has a sidewall, an upper side and a bottom side, and at least a first circumferential seal, wherein at least the upper side of the piston is closed by a closure, and wherein the upper side is made of a first, elastic material, wherein the upper side is configured to deform upon a pressure change acting on the upper side, wherein the sidewall is made of a second material which is different from the first elastic material, wherein the first circumferential seal is positioned on the sidewall on its outer surface.
Specification