Induction heat seal liners
Generally Induction heat seal liners consisting of an aluminum foil layer with an appropriate heat seal layer. Induction sealing will be possible to apply on plastic and glass bottles and containers. Plastic containers (including PET, PE, PP, PVC) maybe seal very securely by applying induction seal liners. Also applying cap seal liners on glass bottles and jars will result in a leakage free, secure sealing.
Induction heat seal liners has 2 main types.
Type 1: One-piece Induction heat seal liners
Type 2: Two-piece Induction heat seal liners
First of all let see what is the different between 1 pc and 2 pc induction seal liners.
One-piece Induction heat seal liners
One-piece induction heat seal liners are cap lining materials consist of an aluminum foil coated with a heat seal layer. There is no backing material 1 pc induction seal liners. It is suitable for sealing different plastic and glass jar, containers and bottles.
Generally, based on the material of the heat seal layer the induction heat seal liner
will seal different bottles. If the coating layer is a PET polymer then it is suitable for PET bottle sealing. If it is Polyethylene polymer, then liner would be good for PE bottle sealing. And if it is a Polypropylene layer then it probably seals PP bottles. Therefore for PVC bottles it would be completely the same.
Two-piece Induction heat seal liners
Two-piece Induction heat seal liners are induction lining materials consisting of an aluminum foil with a heat seal layer. Also a backing layer will come with 2 pc induction seals. Due to different demands of manufacturers the backing layers maybe a paper (pulpboard) or a PE foam layer.
In 2 pc type seal liners, the backing layer will separate form foil seal liner after sealing. And it will remain in the bottle cap as a secondary liner provides extra sealing features.
In general, depends on the material of the heat seal layer the induction heat seal liner will seal different bottles. The heat seal layer will bond with the bottle material and make the sealing. If the coating layer is a PET polymer then it is suitable for PET bottle sealing. If it is Polyethylene polymer, then liner would be good for PE bottle sealing. And if it is a Polypropylene layer then it probably seals PP bottles. Therefore for PVC bottles it would be completely the same.
What bottle materials can use induction seal?
It is possible to apply Induction seal liners on plastic bottles and also glass bottles and jars.
- Polyethylene bottles (HDPE)
- PET Bottles
- Polypropylene Bottles (PP)
- PVC Bottles
- Glass Bottles & Jars
How to apply Induction liners to the bottles?
First of all the lining heat seal material should be inserted into the container or bottle closure. After the product is filled into the bottle, the liner should be applied to the container. Finally it will seal by an induction sealing machine (hand held induction sealer or automatic induction sealer). Furthermore for correct function of induction heat seal liners, the closure must press the liner firmly on the bottle neck. Otherwise a strong sealing won’t achieve even by using high quality induction heat seal liners.