Packaging unit for improving preservation of the product during storage
AssigneeL'oreal
InventorJean-Louis H. Gueret
Life of this patent
Estimating the term…
Abstract
According to this process, the container (2) is filled, and after filling a capsule (6) carrying a valve is fixed in a sealed manner to the neck (21) of the bottle (2), said valve consisting of a membrane (5) of elastomeric material of thickness such that that valve can become sealed again by elastic recall after having undergone aspiration in order to create a reduced pressure and/or the introduction of unreactive gas, the capsule (6) and the valve (5) remaining on the container (2) and maintaining the seal of the container (2) during storage. A top cap (4) may receive the valve (5) and contribute to sealing. The invention also relates to a packaging unit for the implementation of this process.
Claims8
Packaging unit for enclosing a product and improving preservation thereof, comprising:
- a container having a neck zone, into which the product is entered;
- a capsule attached to said neck zone of said container;
- a valve associated with said capsule, said valve serving as a means by which pressure is changed in said container;
- and
- said valve comprising a flexible elastic membrane having the shaped of a cylindrical cap including an edge and a base, at least one opening being formed in said membrane, wherein said valve can remain closed by virtue of the inherent elasticity of said membrane and can open by the application of an aspiration and/or injection member over said membrane base, wherein a top cap is fixed to said capsule, and covers said capsule and said valve with which it is associated, said capsule having an outer wall and an inner wall with one of said walls having means for preventing rotation of said top cap relative to said capsule.
Dependencies are inferred from the claim text.