Heat sealer

Heat seal connectors are used to join LCDs to PCBs in many consumer electronics, as well as in medical and telecommunication devices.

Heat sealing of products with thermal adhesives is used to hold clear display screens onto consumer electronic products and for other sealed thermo-plastic assemblies or devices where heat staking or ultrasonic welding are not an option due to part design requirements or other assembly considerations.

Heat sealing also is used in the manufacturing of bloodtest film and filter media for the blood, virus and many other test strip devices used in the medical field today.

Laminate foils and films often are heat sealed over the top of thermoplastic medical trays, Microtiter (microwell) plates, bottles and containers to seal and/or prevent contamination for medical test devices, sample collection trays and containers used for food products.

Fluid bags are made out of a multitude of varying materials such as foils, filter media, thermoplastics and laminates.

[citation needed] A type of heat sealer is also used to piece together plastic side panels for light-weight agricultural buildings such as greenhouses and sheds.

Several methods are available to determine the ability of a sealed package to retain its integrity, barrier characteristics, and sterility.

With some plastic films, observation can be enhanced by using polarized light which highlights the birefringence of the heat seal.