METHOD FOR PRODUCTION OF POROUS MATERIAL Russian patent published in 1997 - IPC

Abstract RU 2079520 C1

FIELD: production of vibration, sound- and heat insulation materials. SUBSTANCE: porous polyvinyl chloride material is manufactured as supported layer and is affected by all-round two-stepped heating. Initially caking within 1-30 min at 170-300 C followed by separation of support takes place. At the second step material is heated at 210-300 C within 0.15-15 min. EFFECT: improved efficiency. 1 tbl

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RU 2 079 520 C1

Authors

Dates

1997-05-20—Published

1994-02-15—Filed