Method for making foamed products

Details Method for making foamed products Method for making foamed products

2006-07-18

2006-07-18

Nguyen, George (Department: 3726)

Metal working

Method of mechanical manufacture

Combined manufacture including applying or shaping of fluent...

C029S527100, C264S041000, C264S157000, C264S154000, C012S033200, C012S1460BR

Reexamination Certificate

active

07076857

ABSTRACT:
A method for making foamed products includes the steps of: (a) foaming a foamable blank at an elevated temperature; (b) forming a plurality of blind holes in the blank which has been foamed, by using a mold having a plurality of protrusions, the protrusions pressing the blank to form the blind holes and to create densified depths respectively in the blind holes; (c) cross-cutting the blank along a plane which extends across the blind holes so that the blank is divided into a first foam sheet having a plurality of through holes and a second foam sheet having a plurality of blind bores with the densified depths; and (d) heating the second foam sheet to expand and to form the densified depths into projections protruding from the second foam sheet.

REFERENCES:
patent: 5972257 (1999-10-01), Liu
patent: 6299806 (2001-10-01), Chen et al.

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