Cryogenic resistant coextruded tubing
First Claim
Patent Images
1. A coextruded tube for a container comprising:
- a first layer of ethylene vinyl acetate;
a second layer of polyolefin; and
a third layer of polyvinyl chloride, the tube providing cryogenic properties.
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Abstract
The present invention provides a coextruded tubing that has been optimized for usage in cryogenic freezing applications. To this end, a coextruded tubing is provided having three layers, a first layer of ethylene vinyl acetate; a second layer of polyolefin; and a third layer of polyvinyl chloride. An improved container for use in cryogenic freezing applications is also provided.
69 Citations
16 Claims
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1. A coextruded tube for a container comprising:
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a first layer of ethylene vinyl acetate; a second layer of polyolefin; and a third layer of polyvinyl chloride, the tube providing cryogenic properties. - View Dependent Claims (2, 3, 4, 5)
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6. A container including a body and a coextruded tube extending from the body, the tube comprising:
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an inner layer of ethylene vinyl acetate; an outer layer of polyvinyl chloride; and a middle layer of polyolefin, the tube providing cryogenic properties. - View Dependent Claims (7, 8, 9, 10, 11)
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12. A plastic container for use in cryogenic freezing applications including a tubing for filling the container secured to a port of the container wherein:
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the container is constructed from ethylene vinyl acetate; and the tubing is constructed from a coextruded material and includes; an inner layer of ethylene vinyl acetate; an outer layer of polyvinyl chloride; and a middle layer of a polyolefin adhesive material, the tube providing cryogenic properties. - View Dependent Claims (13, 14, 15, 16)
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Specification