Method of forming an integral closure for a thermoplastic container
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
Apr 21, 1981
Grant Date -
N/A
app pub date -
Dec 15, 1978
filing date -
Dec 15, 1978
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
An improved high speed cast process for fusing fasteners, with strips of film at their base, to separately extruded film or sheet stock for making containers with integral closure means. The process makes available multiple sets of male and female fastener elements, with variable spacing, in a single extrusion operation. The apparatus is configured so that adhesion between the fastener elements and the film or sheet occurs very close to the die lips before significant cooling of the extrudate occurs. Containers with improved profiles are obtained because the base permits the profiles to remain relatively rigid during closing and opening.
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