| abstract |
Expanded fluorine type resin products are prepared bynadding, to a thermoplastic fluorine type resin without a cross-linkingnstructure, 0.4 to 20% by weight of a C 1 to C 8 -fluorocarbonnhaving a boiling point lower than the crystallinenmelting point of the resin and 0.01 to 1% by weight of at leastnone compound selected from the group consisting of water andnalcohols having a boiling point of 150°C or less and a latentnheat of evaporation of 7.0 kcal/mol or more, and expanding thenmixed resin. By this process sheet materials suitable asnpolishing cloths may be prepared. |