Method of making containers and preforms incorporating barrier materials
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United States of America Patent
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Nov 6, 2001
Grant Date -
N/A
app pub date -
Oct 17, 1997
filing date -
Oct 17, 1997
priority date (Note) -
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Abstract
A container of the type adapted to contain an ingestible product and configured to having a multi-layer wall portion. The wall portion includes a multi-component layer having at least two discreet sublayers with an interface extending between the sublayers and extending longitudinally of the container and terminating in a threaded end portion. One sublayer is virgin polyethylene terephthalate, and the other sublayer is a barrier formed of a copolyester of terephthalic acid of low permeability. An outer layer material formed of a recycled polyethylene terephthalate has a thickness greater than the thickness of the barrier sublayer. The several layer materials have refracted indices within the range of 1.55 to 1.75. A process for the production of a multi-layer plastic container involving injecting a virgin polyethylene terephthalate and a thermoplastic barrier material through a lamellar injection system to provide a composite-multilamellae stream. The composite stream is supplied to a premold to form an initial preform. Recycled polyethylene terephthalate is then supplied over the initial preform to form an outer layer of a final preform which is then subjected to a blow molding operation to form the container. Alternatively, virgin polyethylene terephthalate can be supplied to a premold to form an initial preform. Recycled polyethylene terephthalate and a thermoplastic barrier polymer are then injected through a lamellar injection system to form a composite stream of discreet lamella of these materials which are supplied over the initial preform to form a final preform which is then blow molded to the desired configuration.
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- 15 United States
- 10 France
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Patent Owner(s)
Patent Owner | Address | |
---|---|---|
THE CONCENTRATE MANUFACTURING COMPANY OF IRELAND | HAMILTON HM 12 |
International Classification(s)
- [Classification Symbol]
- [Patents Count]
Inventor(s)
Inventor Name | Address | # of filed Patents | Total Citations |
---|---|---|---|
Hutchinson, Gerald A | Torrance, CA | 61 | 1206 |
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Fee | Large entity fee | small entity fee | micro entity fee | due date |
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Fee | Large entity fee | small entity fee | micro entity fee |
---|---|---|---|
Surcharge after expiration - Late payment is unavoidable | $700.00 | $350.00 | $175.00 |
Surcharge after expiration - Late payment is unintentional | $1,640.00 | $820.00 | $410.00 |
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