Emere ngwaahịa a nke PET/PE. Ala nwere ike iguzo n'onwe ya, na-eme ka akpa ahụ guzoro ọtọ. Akara zipa, enwere ike iji ya mee ihe ọzọ. Ihe dị n'etiti akpa ahụ bụ ihe nkiri polyester aluminized, nke nwere ọnụ ala dị ọnụ ala, ọdịdị mara mma na ezigbo ihe mgbochi.