EPE Foam Discs

Discover the superior performance of food-grade PE Foam Discs, the engineered sealing solution trusted across industries. Manufactured from premium PE resin through physical foaming, our discs offer exceptional compression recovery, seamlessly filling gaps to create a reliable, long-lasting seal. The excellent chemical stability ensures resistance to acids, alkalis, salts, and most solvents, guaranteeing product integrity and preventing aging.

We specialize in customization, offering a wide range of thicknesses and precise dimensions to meet your unique packaging requirements. Our PE foam discs are ideal for providing consistent sealing in various bottle caps and are widely used in pump heads for daily chemical products like laundry detergent, body wash, and shampoo.

For enhanced performance, we also offer custom laminations such as double-sided PE coating or PET film coating foam. These upgrades provide smoother cap-opening experiences and increased heat resistance, making them perfect for high-end cosmetics and demanding applications.

Selecting the optimal thickness is key to achieving perfect sealing, user-friendly functionality, and cost-efficiency. Follow this professional guide:

Step 1: Analyze Application & Content

For Standard Rigid Caps (e.g., sauce jars, snack lids): Common Range: 0.6mm - 1.2mm.

For dry powders/solids (coffee, spices), choose 0.6mm-1.0mm for effective, economical sealing.

For liquids, oils, or hygroscopic products (juices, oils, powdered milk), opt for 1.0mm-1.5mm for greater compression resilience.

For Pump & Spray Heads:Common Range: 1.5mm - 3.0mm.

1.5mm-2.0mm suits water-based or thin lotions, balancing seal and feel.

2.0mm-3.0mm is recommended for viscous creams, shampoos, or serums to withstand piston pressure and ensure proper pump re-priming.

For Tube Caps or Flip-Top Closures:

Consider cap engagement depth and flexibility.

Common Range: 1.0mm - 2.0mm.Thicker foam may be needed for deep caps or snap-fit seals.

Step 2: Measure Critical Dimensions
The foundational rule: The liner's initial thickness must exceed the seal gap-the vertical space between the cap and bottle finish when closed.

Professional Calculation:

Minimum Initial Thickness ≈ Seal Gap / (1 - Compression Rate)

A compression rate of 20%-40% is typically ideal.

Example: For a 1.0mm gap targeting 30% compression:
1.0mm / (1 - 0.3) = 1.43mm → Select a 1.5mm disc.

Step 3: Consider Additional Factors

Content Properties: Thicker or higher-density foam (≥2mm) is advised for gritty or highly viscous products to prevent intrusion.

User Experience: Avoid excessive thickness to prevent "cap bulge" and ensure smooth opening.

Production & Cost: Thickness impacts material cost and automated assembly efficiency; 1.0mm-2.0mm offers excellent handling.

Partner with us for your sealing needs. We provide expert guidance, free sample testing, and full customization-from material composition to precise dimensions and laminations-to deliver the perfect seal for your product.

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