Ngwakọta ihe owuwu
A na-eji plastik mee efere dị n'elu na ihe nchekwa, a na-akwanyekwa obe n'obe n'ime oghere U-nke nwere mpempe akwụkwọ oyi na-atụ nke nwere ihe dịka 1.5mm;A na-ejikọta efere dị n'elu na ihe nchekwa na obe obe, nke ejikọrọ na etiti longitudinal beam site na kposara ma nwee ike wepụ ya n'oge ọ bụla.A na-ejikarị polyester na polypropylene eme plastik a na-eji n'ime ihe mkpuchi plastik a site na ịkpụzi injection.Dịka ọmụmaatụ, ihe mgbochi nke ụgbọ ala Peugeot 405 bụ ihe polyester ma mee ya site na ịkpụzi ịgbanye mmeghachi omume.The bumpers nke Volkswagen si Audi 100, golf, Santana na Shanghai na Xiali na Tianjin bụ nke polypropylene ihe site injection ịkpụzi.E nwekwara ụdị rọba a na-akpọ polycarbonate sistemụ ná mba ọzọ, bụ́ nke na-abanye n’ime ihe ndị na-emepụta alloy ma nakwere usoro ịkpụzi injection alloy.Bọmpa a na-edozi ọ bụghị nanị na ọ nwere ike siri ike dị elu, kamakwa ọ nwere uru nke ịgbado ọkụ, kamakwa ọ na-arụ ọrụ mkpuchi dị mma, a na-ejikwa ya na ụgbọ ala.
Geometry nke bompa agaghị ekwekọ naanị n'ụdị ụgbọ ala ahụ niile iji hụ na ịma mma, kamakwa soro njiri mara igwe na njirimara nnabata ike iji hụ na nnabata vibration na ịkwatu n'oge mmetụta.