Salon jaka: Jakar hatimi uku
Jakar hatimin hatimi guda uku ita ce hanyar da ta fi dacewa don yin jaka wanda ke rufe gefe uku a cikin lebur kuma yana barin gefe ɗaya buɗe don ɗaukar kaya. Yana da mafi kyawun iska, kuma jakar injin dole ne a yi don jakar hatimi uku. kayan don jakar hatimi mai gefe uku ciki har da PET, CPE, CPP, OPP, PA, AL, KPET da sauransu.
Ana amfani da jakar hatimi guda uku don jakar abinci ta filastik, jakar nailan, jakar shinkafa, jakar zik ɗin, jakar foil na aluminum, jakar shayi, jakar alewa, jakar foda, jakar kwaskwarima, jakar abin rufe fuska na fuska, jakar magani, jakar magungunan kashe qwari, takarda jakar filastik, Fim ɗin lu'u-lu'u na kwano, jaka mai siffa ta musamman, jakar anti-a tsaye, fim ɗin yi don injin marufi ta atomatik, jakar filastik da sauransu.