by Lance Crawford, Thermal Press International, Inc.
Heat sealing is the process of sealing one thermoplastic to another similar thermoplastic using heat and pressure. The direct contact method of heat sealing utilizes a constantly heated die or sealing bar to apply heat to a specific contact area or path to seal or weld the thermoplastics together. Heat sealing is used for many applications, including heat seal connectors, thermally activated adhesives and film or foil sealing.
Common applications for the heat sealing process
Between space and medicine, you’d be hard-pressed to find a more regulated industry. This makes sense as these industries contain many of the same dangers. In space, vacuum tight seals are important for survival.
In medical devices, having precisely measured seals can also mean life and death, so regulations are just as stringent. The many different applications of heat seals in the industry (such as ports & plates) require the highest standard of equipment manufacturing to deliver consistent, validated results.