Extruded propylene resin foam

Details Extruded propylene resin foam Extruded propylene resin foam

2005-11-18

2010-12-21

Gulakowski, Randy (Department: 1796)

Synthetic resins or natural rubbers -- part of the class 520 ser

Synthetic resins

Cellular products or processes of preparing a cellular...

C521S050000, C521S142000, C521S097000, C521S082000, C428S035700, C524S582000

Reexamination Certificate

active

07855239

ABSTRACT:
An object of the present invention is to provide an extruded propylene-based resin foam in which a average diameter of cells therein can be reduced while a high expansion ratio remains high, thereby providing an excellent insulation efficiency. The extruded propylene-based resin foam according to the present invention is extruded propylene-based resin foam that is formed by extrusion-foaming a propylene-based resin, and the extruded propylene-based resin foam has the expansion ratio of 10 or more and the average cell diameter of less than 400 μm. With this configuration, the extruded foam can have a plurality of air bubble walls therein. Thus, the extruded propylene-based resin foam can efficiently block external radiant heat, thereby realizing excellent insulation efficiency.

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U.S. Appl. No. 11/719,710, filed May 18, 2007, Sugawara, et al.

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