METHOD FOR PRODUCTION OF POROUS MATERIAL Russian patent published in 1998 - IPC

Abstract RU 2109768 C1

FIELD: production of porous material. SUBSTANCE: powder vinyl chloride polymer is formed as backed layer, the process is carried out with the help of roller. Layer is affected by agglomeration and frothing which takes place by heating layer from its both sides. Heating takes place with the help of infrared irradiation till apparent density is 0.25-0.70 g/cm³. EFFECT: improved efficiency of the method. 1 tbl

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RU 2 109 768 C1

Authors

Dates

1998-04-27—Published

1994-09-12—Filed