FIELD: process engineering.
SUBSTANCE: invention relates to production of microperforated polymer film. Proposed method comprises forming of polymer film consisting of opposed first and second surfaces and multiple cavities there between. Said multiple cavities open to first surface and include the cavity surface. Cavity surface crosses the first surface. Then, fluid is fed between thrust surface and first surface. Thrust surface supports said polymer film. Second surface is subjected to heat treatment to perforate said polymer film at areas that cover said multiple cavities. Article thus made represents a solid particle filter for fluids or gases.
EFFECT: higher efficiency of production, precise perforation, high density of relative open area.
16 cl, 2 tbl, 12 dwg
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