Foamed glass articles and methods of making same and methods of

Details Foamed glass articles and methods of making same and methods of Foamed glass articles and methods of making same and methods of

1996-10-28

1999-07-27

Copenheaver, Blaine

Stock material or miscellaneous articles

Web or sheet containing structurally defined element or...

Composite having voids in a component

51296, 51308, 51309, 65 176, 65 22, 264 44, 264661, 264670, 264681, 4283126, 4283139, 4283171, 4283179, 501 32, 501 39, 501 84, B28B 150, C03B 1908, C03C 1100

Patent

active

059287730

ABSTRACT:
A neutral pH foamed glass article is produced from a mixture of pulverized glass particles, foaming agent, binder, and water, wherein the glass article is heated to remove excess moisture and organic materals, then further heated to cause the foaming agent to emit a foaming gas, thereby causing foaming of the glass article. The foamed glass article is annealed in a controlled cooling fashion to avoid thermal stress, cracking and devitrification. The foamed glass articles may be used as artificial pumice stones in the stone-washed garment industry. Preferably, the mixture contains an amount of lignosulfonate to produce foamed glass having substantially neutral pH values in a range of from about 7.0 to 8.4.

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