Two-Piece Aluminum Foil Induction Seal Liner

Two-Piece Aluminum Foil Induction Seal Liner for Bottle Caps

Two-piece aluminum foil induction seal liner combines an aluminum foil layer with a heat-seal fusible layer and a paperboard backing. When activated by an induction sealing machine, it creates an airtight, tamper-evident, leak-proof seal on PET, PE, PP and glass bottles — protecting water, juice, agrochemicals, lubricants, cosmetics and more. Sizes are available from 18mm to 150mm to fit standard cap threads (PCO 38mm and others), with thickness options of 0.6mm, 0.8mm, 1.0mm and 1.5mm.

Quick facts: MOQ 50,000 pcs  |  Lead time 15–20 days  |  Free samples  |  Custom sizes & printing available

Specifications

Applications

Used by bottle manufacturers, agrochemical plants, food & beverage factories and cosmetics factories across South America, Southeast Asia, Europe, the United States and Russia. Typical applications include bottled water and juice, pesticide and fertilizer bottles, motor oil and lubricants, detergents and cleaning agents, and cosmetic creams.

Key Advantages

• Food-contact safe — materials comply with FDA and EU food-contact requirements; SGS test reports available.
• Corrosion & solvent resistant — special PE formulations resist swelling and leakage with essential oils, cleaners and aggressive contents.
• Easy-open, reliable peel — engineered backing ensures the liner peels cleanly without delamination over time.
• Tight dimensional tolerance — precision die-cutting keeps diameter within tolerance so liners sit snugly in the cap.
• Full customization — diameter, thickness, backing material and printing all customizable.

Why Choose Taizhou Rimzer

Taizhou Rimzer Rubber & Plastic Co., Ltd is a professional bottle packaging supplier with over 20 years of industry experience. Our 23,000 m² factory with 85 skilled employees delivers over one billion pieces per year to 100+ customers worldwide. We supply bottle factories, agrochemical plants, food & beverage factories, cosmetics factories and trading companies — from bottles to seal liners, one reliable source.

Frequently Asked Questions

1. Which cap materials can your induction liners seal?

Our liners work with PP, PE and PET caps. The key is matching the heat-seal layer to the cap material — tell us your cap material and we will recommend the right liner formulation.

2. What induction sealing temperature, speed and power should we use?

Parameters depend on your sealer power, cap diameter and line speed. As a reference, most 38mm caps seal well at 1.5–3kW with 0.5–2 seconds dwell. We provide tailored parameter guidance with every order and support you through trial production.

3. How heat resistant are the liners? Can they survive hot-fill or pasteurization?

Yes. Our standard liners handle typical hot-fill and pasteurization processes. For high-temperature applications, we recommend confirming your process profile (temperature and duration) so we match the correct sealing layer.

4. Are they solvent resistant? Will essential oils, cleaners or sauces cause swelling or leakage?

Our corrosion-resistant formulations are designed for aggressive contents including essential oils, alcohol-based products, cleaning agents and sauces. Sample testing with your actual product is free and recommended before mass production.

5. What thicknesses are available? Can you customize thickness?

Standard options are 0.6mm, 0.8mm, 1.0mm and 1.5mm. Custom thickness is available — share your cap design and sealing equipment, and we will produce to your specification.

6. Do the liners have food-contact certifications? Can you provide FDA or LFGB documents?

Yes. Our materials meet FDA and EU food-contact requirements, and SGS test reports are available on request.

7. What about sealing failures — liners that will not seal, seal too tightly to peel, or delaminate over time?

These issues come from mismatched liner formulation or incorrect sealing parameters. We control both: correct formulation for your cap and content, plus parameter guidance and retention samples, so peeling stays consistent over the product's shelf life.

8. What is the MOQ? Are samples free? Who pays the sample freight?

MOQ is 50,000 pcs. Samples are free; sample quantity and courier cost are negotiable depending on your location and project.

9. What is the cutting diameter tolerance? Will liners rattle or jam in the cap?

Precision die-cutting keeps diameter within tight tolerance (typically ±0.1mm). Consistent sizing means the liner seats correctly in the cap — no rattling, no jamming.

10. How should liners be stored? Do they expire?

Store in original sealed packaging, cool and dry, away from direct sunlight. Properly stored liners stay effective well beyond 12 months. We print production dates on every batch for traceability.

11. Can the liner surface be printed with our logo, batch number or warning text?

Yes, custom printing is supported — logos, batch numbers and warning texts are all possible. Contact us with your artwork.

12. Is sealing performance consistent between batches? How do you control quality?

Yes. We control raw material batches, foil coating weight and sealing-layer thickness at incoming inspection, run process capability checks in production, and keep retention samples from every batch so any future batch can be verified against the approved sample.