Directional flexibilization of expanded thermoplastic foam sheet for low temperature insulation
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
Apr 9, 1985
Grant Date -
N/A
app pub date -
Apr 9, 1982
filing date -
Apr 9, 1982
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
Flexibilized, rigid plastic foam sheets with improved properties particularly desirable for low temperature and cryogenic insulation can be prepared by mechanical compression of freshly expanded closed-cell thermoplastic foams. Thus an extruded foam sheet having a density of 20-100 kg/m.sup.3, a y-axial size size of 0.05 to 1.00 mm and a Y-axial compressive strength of at least 1.8 kg/cm.sup.2 is flexibilized with 0.25 to 240 hours of expansion to give a flexibilized foam with improved elongation, workability, crack resistance and water vapor barrier properties.
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