Composition adapted to be used for manufacturing stoppers and process of manufacture
AssigneeBouchons A Champagne Sabate, S.A.
InventorsBernard Sabate, Joel Masse, Gerard Jeanty
Life of this patent
Estimating the term…
Abstract
This invention relates to a composition which may be used in particular for manufacturing stoppers and to a process for manufacturing same. A composition is principally constituted by particles of ligneous plant matters such as natural cork or wood, by a plastics material of closed cellular structure such as expansible microspheres, and by a binding agent; a stopper comprises at least one active part constituted by a composition according to the invention, and said binding agent is a glue suitable for contact with foodstuffs, for example of the polyurethane or acrylic type. The technical domain of the invention is that of the cork industry.
Claims15
A composition useful for manufacture of products with an appearance of natural cork comprising;
- a. 1%-85% of particles of ligneous plant matter;
- b. 1%-60% of a plastics material of closed cellular structure having microspheres;
- said microspheres having a means dimension of less than 200 microns, said microspheres containing a hydrocarbon expansion agent;
- wherein said plastics material is selected from the group consisting of a polymer of vinyl chloride, a polymer of vinylidene chloride, a copolymer of vinyl chloride and acrylonitrile, a copolymer of vinylidene chloride, acrylonitrile, and methyl methacrylate, a copolymer of styrene and acrylonitrile, a polymer of ethylene, a polymer of vinyl acetate and a copolymer of methyl methacrylate and acrylonitrile;
- and
- c. 5%-70% of a binding agent.
A stopper comprising:
- 1%-85% of particles of natural cork;
- 1%-60% of a plastics material of closed cellular structure having microspheres of a mean dimension of less than 200 microns wherein said microspheres contain a hydrocarbon expansion agent;
- c. 5-70% of a glue selected from polyurethane or an acrylic.
Dependencies are inferred from the claim text.