Multi-layer preform used for plastic blow molding
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
Sep 8, 1998
Issued Date -
N/A
app pub date -
May 10, 1995
filing date -
Sep 10, 1993
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A multi-layer preform used for plastic blow molding and a method for making the preform provides an inner layer of polyethylene naphthalate and an injection molded outer layer of homopolymeric polyethylene terephthalate which has reduced transmission of gas upon blow molding as a container due to the gas barrier provided by the inner layer of polyethylene naphthalate. The inner layer of homopolymeric polyethylene naphthalate by itself or along with a further inner layer of virgin polyethylene terephthalate is thermoformed prior to the injection molding of the outer layer of polyethylene terephthalate. A minimal amount of the homopolymeric polyethylene naphthalate which is relatively expensive can be utilized due to the thermoforming and injection molding as disclosed.
First Claim
Family
International Classification(s)
Cited Art Landscape
Patent Citation Ranking
Advertisement
Advertisement
Advertisement
Recipient Email Address
Recipient Email Address
Comment
Recipient Email Address
Add to Portfolio(s)
To add this patent to one, or more, of your portfolios, simply click the add button.
This Patent is in these Portfolios:
Add to additional portfolios:
Last Refreshed On:
Changes done successfully