Techspan offer a range of equipment for 'tamer eviedent' cap sealing of plastic bottles & tubs. Induction cap sealing is a non-contact process by which a foil disk or "seal" is bonded to a container. Developed more than 35 years ago, induction sealing was originally intended to prevent leakage of chemicals from plastic bottle caps. Today, this unique process can be used with most any style container and closure for sealing foods, drugs, beverages, solvents and chemicals.