FIELD: polymeric materials. SUBSTANCE: for producing thermoweldable films (thickness is 100 mm) and sheets (100 mm) the following composition is used, mas. p. : polypropylene (isotacticity index is above 90) 36.8-46.0; xylene-insoluble at room temperature polyethylene 15-20, and amorphous copolymer of ethylene with propylene containing 40-70% ethylene 37.2-44.2. Ratio of true viscosity value in tetrahydronaphthalene at 135 C of the indicated components that are insoluble and soluble in xylene at room temperature = 0.8-1.2. EFFECT: high elastomeric properties of composition. 3 cl, 5 tbl
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