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Foam Cap Liner
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Foam Cap Liner
- Description
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Product Overview
Yuemao foam cap liners are die-cut foam inserts placed inside bottle caps. When the closure is tightened, the foam compresses against the bottle rim to help create a contact seal and accommodate small variations in the neck finish. These liners do not normally form a heat-fused, tamper-evident foil membrane on the bottle mouth.
Foam liners are available for customized cap dimensions. The required thickness and compression behavior depend on the cap, neck design and contents. Yuemao currently offers a defined foam material family; different thickness or color choices should not be described as different foam densities without supporting test data.
How It Works / Construction
The disc sits inside the cap and is compressed when the cap is tightened. Foam resilience may help accommodate suitable rim variations, but a compression liner does not create a foil induction bond or provide a new tamper-evident membrane.
Key Features
Flexible compression against the bottle rim
No induction sealing equipment required
Customized round or special die-cut shapes
Suitable for selected reclosable closures
Suitable Bottles and Closure Compatibility
Selection is driven by bottle-mouth geometry, cap design, required compression and contents compatibility. Do not define suitability solely by PE, PET or PP, which are induction sealing-layer categories.
Typical Applications
Cosmetics, daily-use products, selected dry packaging and compatible closures where cushioning and compression sealing are needed.
Customization and Specification Options
Confirm disc outside diameter, sheet thickness, foam density or grade, compression requirements and any coating or facing. Availability of 1.0 mm or 1.5 mm material must be confirmed for the exact product rather than assumed universal.
Selection and Testing
Provide cap inner diameter, bottle-mouth outer and inner diameters, cap liner pocket depth, filling formulation and tightening process. Test compression recovery, sealing contact and any liquid exposure on actual packaging.
Frequently Asked Questions
Q. Does this foam liner require an induction machine?
A. No. The basic foam lining function relies on compression under the cap rather than an induction heat seal.
Q. Can foam be used instead of a tamper-evident foil?
A. It serves a different purpose and should not be described as an equivalent induction tamper-evident seal.
Q. How do I choose thickness?
A. Review cap depth, thread engagement and intended compression, then evaluate samples with the actual closure.
Request a Quote or Samples
Please share your bottle material, bottle-mouth dimensions, cap type, filling contents, expected quantity and any available drawings or photos. We can review the suitable construction and discuss samples for application testing before a production order.
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