Method of manufacturing a polytetrafluoroethylene tape
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
Dec 12, 1995
Grant Date -
N/A
app pub date -
Dec 21, 1993
filing date -
Jun 21, 1991
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
A method of manufacturing a PTFE tape whose density is less than or equal to 0.3 g/cm.sup.3, the method being characterized in that a raw PTFE tape is subjected to a first step of stretching while being heated so as to reduce its density to within the range 0.7 g/cm.sup.3 to 0.30 g/cm.sup.3, after which at least one step is performed of the type including a stage during which the tape is stabilized without changing the state of the PTFE by being passed through an oven at a temperature and for a duration that are functions of the mass to be stabilized while keeping the tape under tension so that its density does not increase, followed by a stage of stretching under heating so that the density of the tape reaches a value lying in the range 0.2 g/cm.sup.3 to 0.12 g/cm.sup.3.
First Claim
Family
International Classification(s)
Cited Art Landscape
Patent Citation Ranking
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