Twin-layer thermoplastic packaging and a process for its manufacture
AssigneeL'oreal
InventorJean-Louis Gueret
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Abstract
A multi-layer thermoplastic packaging, the outer layer containing at least one filler having particles of different particle size and of a diameter ≧50 μm, to give a natural stone external appearance and a process for the preparation thereof which includes coextrusion and blowing of the inner and outer layers, to provide the packaging which can be in the form of a flask, bottle, pot or other desired shape.
Claims36
A thermoplastic blow molded, co-extruded packaging comprising:
- a product contained in said packaging, said product comprising at least one of a cosmetic composition and a dermatological composition;
- a thermoplastic inner layer in contact with said product, wherein said inner layer is formed of a material compatible with said product;
- and
- a thermoplastic outer layer;
- wherein the outer layer is crack-free and comprises filler particles, said filler particles comprising particles having an average diameter greater than 50 μm, and selected from the group consisting of lamellar particles, fibrous particles, and a mixture thereof.
A process for manufacturing a thermoplastic packaging comprising coextruding at least one thermoplastic inner layer and an outer layer containing at least one filler having particles of variable particle size and particle diameters ≧50 μm, and blow-molding the inner and outer layers to orient the particles of the filler in the outer layer parallel to the inner layer, and wherein the outer layer is crack free.
A thermoplastic blow molded, co-extruded container comprising:
- a product contained in said container, said product comprising at least one of a cosmetic composition and a dermatological composition;
- a thermoplastic inner layer in contact with said product, wherein said inner layer is formed of a material compatible with said product;
- and
- a thermoplastic outer layer;
- wherein the outer layer is crack-free and comprises filler particles, said filler particles comprising particles having an average diameter ranging from 150 μm to 600 μm.
Dependencies are inferred from the claim text.