usage: -Various plastic (LDPE, HDPE, PP, PVC, PET,ABS, PS) cups. - glass container with screw type cap. Induction ... heating process by which a foil disk or "seal" is bonded to a container. This unique process accomplishes the hermetic sealing ... Customer's Confidence.Application:-Various plastic (LDPE, HDPE, PP, PVC, PET,ABS, PS) cups.- glass container with screw type cap.