Stock material or miscellaneous articles – Web or sheet containing structurally defined element or... – Composite having voids in a component
Reexamination Certificate
2011-02-15
2011-02-15
Vo, Hai (Department: 1788)
Stock material or miscellaneous articles
Web or sheet containing structurally defined element or...
Composite having voids in a component
C428S314400, C428S314800, C428S319700, C428S319900
Reexamination Certificate
active
07887909
ABSTRACT:
In some embodiments, a foamed polymer sheet comprises: a polymeric material and cells located in the polymeric material. The cells have a size distribution, D90of greater than or equal to 300 μm and the sheet has a light transmission of greater than or equal to about 5%. In another embodiment, the cells have an average diameter, as measured along a major axis, of about 1 mm to about 4 mm, and the sheet has a light transmission of greater than or equal to about 5%. In another embodiment, a method of making a foamed polymeric sheet comprises: combining a blowing agent with a polymeric material to form a mixture, nucleating bubbles in the mixture, and cooling the mixture. The mixture is at a sufficient temperature and the cells have a sufficient cell size such that the sheet has a light transmission of greater than or equal to 10%.
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Borgsten Jonas Erik
de Nooijer Rene
Hamersveld Eelco van
Maas Christianus Johannes Jacobus
Cantor & Colburn LLP
Sabic Innovative Plastics IP B.V.
Vo Hai
LandOfFree
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