초록 ▼

By achieving an extruded, foamed core formed from plastic material peripherally surrounded and integrally bonded with a cooperating synthetic, plastic, extruded, outer layer, a unique, multi-component, multi-layer synthetic closure is provided which may be employed as a bottle closure or stopper for

By achieving an extruded, foamed core formed from plastic material peripherally surrounded and integrally bonded with a cooperating synthetic, plastic, extruded, outer layer, a unique, multi-component, multi-layer synthetic closure is provided which may be employed as a bottle closure or stopper for any desired product, whether the product is a liquid, a viscous material, or a solid distributed in a bottle or container and dispensed through the open portal of the container neck. The present invention achieves a mass producible, resilient, synthetic bottle closure which is employable for any desired bottle, including wine. By employing the present invention, a multi-component or multi-layer synthetic closure is attained which possesses physical properties substantially equal to or better than the physical properties found in cork material, which has caused such cork material to be the principal closure material for wine bottles.

대표청구항 ▼

[ Having described my invention, what I claim is new and desire to secure by Letters Patent is:] [1.]1. A stopper or closure for a product retaining container constructed for being inserted and securely retained in a portal forming neck of the container, said stopper/closure comprising:A. an elongat

[ Having described my invention, what I claim is new and desire to secure by Letters Patent is:] [1.]1. A stopper or closure for a product retaining container constructed for being inserted and securely retained in a portal forming neck of the container, said stopper/closure comprising:A. an elongated, cylindrically shaped core member formed from foamed plastic material and comprising terminating end surfaces forming the opposed ends of the cylindrically shaped core member; andB. at least one layera. peripherally surrounding and intimately bonded to the cylindrical surface of the core member with the end surfaces of the core member being devoid of said layer, andb. comprising at least one thermoplastic polymer selected from the group consisting of polyethylenes, metallocene catalyst polyethylenes, polybutanes, polybutylenes, polyurethanes, silicones, vinyl-based resins, thermoplastic elastomers, polyesters, ethylenic acrylic copolymers, ethylene-vinyl-acetate copolymers, ethylene-methyl-acrylate copolymers, thermoplastic polyurethanes, thermoplastic olefins, thermoplastic vulcanizates, flexible polyolefins, fluorelastomers, fluoropolymers, polyethylenes, polytetrafluoroethylenes, and blends thereof, ethylene-butyl-acrylate copolymers, ethylene-propylene-rubber, styrene butadiene rubber, ethylene-ethyl-acrylic copolymers, ionomers, polypropylenes, and copolymers of polypropylene and copolymerizable ethylenically unsaturated comonomers; reby a multi-layer/multi-component synthetic closure is attained which is capable of completely sealing any desired product in a container, retaining the product in the container for any desired length of time without any degradation of the product or degradation of the closure.