How to seal a bottle (container)?
Pressure seal (by bottle cap gasket/wads or pressure sensitive liner)
Electrical heat seal (by cap lid closure)
Glue seal (by glue seal liner)
Induction heat seal (by induction liner)
The pressure seal, usually using a soft plastic foam gasket(bottle wads) or pressure sensitive liner to seal a bottle. In the sealing operation, the gasket (or liner) will be put into the bottle cap, and while the bottle cap screwing onto the bottle lip, the gasket (or liner) will tighten the bottle lip by compressure.
The electrical heat seal, using a cap lid closure, which is laminated with multilayer films and a heat seal layer, to seal a container. When the electrical heat seal device sealing the container, the cap lid closure will melt onto the container lip.
The glue seal, by coating glue on the container lip, and then paste glue seal liner on the lip to seal container.
About the induction heat seal, there are two element is needed, induction sealer and induction heat seal liner. And below will go through detail about how the induction heat seal works.
How induction heat seal works?
Step0: Before induction sealing, put induction liner into bottle cap
Step1: Fill object into the bottle
Step2: Lock bottle cap (from step0) onto the bottle
Step3: Induction sealer heats the induction liner
Step4: After induction sealing, a foil mounted on the bottle lip