Atụmatụ: 1.Polypropylene nwere ike ịbụ nke a na-apụghị ịgbanwe agbanwe na 121 ℃ ma ọ dịkwa ogologo oge na-80-℃ 2.U nwere ụdị ala V na nke V nke kwesịrị ekwesị maka ịgwakọta na nchịkọta nke sample3.
Atụmatụ: Polypropylene nwere ike ịbụ nke a na-apụghị ịgbanwe agbanwe na 121 ℃ ma ọ bụkwa ogologo oge na-agbanwe agbanwe na-80 ℃ U na nke V-ala usoro ntaneti nke kwesịrị ekwesị maka ịgwakọta na nchịkọta nke ihe atụ