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Easy Peel Film for Contact Lens
Precision easy-peel sealing film for contact lens blister containers. Withstands pressurized high-temperature sterilization to 130°C while keeping peel force stable and consistent, safe and hygienic for direct product contact.
A Purpose-Built Easy-Open Lid for Contact Lens Containers
F4569 is the 50μm grade in the family, laminated into structures such as PET 12μm // AL 9μm // ONY 15μm // EO-RCPP 50μm. The heavier web adds puncture and handling resistance over the 35μm F4568 while holding the same controlled peel profile — a small, predictable shift in peel force before and after sterilization, and a heat-sealing window of over 30°C on the line — so the pack still opens at fingertip force without splashing the saline solution inside.
Where F4569 Is Used
- 1 High-temperature sterilization lid material for contact lens containers
- 2 Heat-seal layer for lid material after lamination
- 3 Suitable for PP (polypropylene) contact lens packaging containers
- 4 Heat resistant up to 130°C
Full Specifications — EO-RCPP Contact Lens Easy Peel Film Series
F4569 is the 50μm grade in Intlpak's EO-RCPP contact lens easy peel film family. The table below shows F4569 alongside its 35μm sibling ( F4568 ) for reference.
| Property | Standard | Unit | F4568 (35μm) | F4569 (50μm) |
|---|---|---|---|---|
| Thickness | — | μm | 35 | 50 |
| Yield Point (MD) | ASTM D882 | kg/cm² | 270 | 280 |
| Yield Point (TD) | ASTM D882 | kg/cm² | 250 | 250 |
| Break Point (MD) | ASTM D882 | kg/cm² | 640 | 620 |
| Break Point (TD) | ASTM D882 | kg/cm² | 410 | 430 |
| Elongation (MD) | ASTM D882 | % | 670 | 790 |
| Elongation (TD) | ASTM D882 | % | 710 | 790 |
| Tensile Modulus 2% (MD) | ASTM D882 | kg/cm² | 6900 | 7200 |
| Tensile Modulus 2% (TD) | ASTM D882 | kg/cm² | 6600 | 6900 |
| Static C.O.F. (corona treated) | ASTM D1894 | kg/200g | 0.60 | 0.54 |
| Static C.O.F. (untreated) | ASTM D1894 | kg/200g | 0.70 | 0.60 |
| Kinetic C.O.F. (corona treated) | ASTM D1894 | kg/200g | 0.48 | 0.43 |
| Kinetic C.O.F. (untreated) | ASTM D1894 | kg/200g | 0.47 | 0.45 |
| Haze | ASTM D1003 | % | 33 | 38 |
| Width | — | — | Customized | |
| Length | — | — | Customized | |
| Recommended Structure | PET 12μm // AL 9μm // ONY 15μm // EO-RCPP 50μm | |||
|---|---|---|---|---|
| Heat Resistance | Up to 130°C | |||
Reviewed by: Intlpak R&D Team.
Why Converters Choose F4569
Storage Notice
Avoid exposure to direct light, wind, and rain — store under appropriate conditions. Prevent products from slipping from high places, being polluted, or being impacted during handling.
Quality & Certification
Manufactured under ISO 9001 quality management and GMP clean-room production, with ISO 22000 & HACCP food-safety certification. All products undergo annual safety checks.
Questions About F4569
F4569 adds 15 μm over F4568 — is it worth it?
It depends on blister size and line type. At 50 μm, F4569 measures 7200/6900 kg/cm² tensile modulus against F4568 's 6900/6600 — a stiffer web that holds dimension better at speed. Larger blisters, or pick-and-place automation sensitive to web sag, justify the extra gauge; ordinary small blisters stay more economical on F4568 .
Does F4569 still clear 130°C sterilization?
Yes — the rating is 130°C, identical to F4568 . Both draw heat resistance from the same EO-RCPP formulation, and gauge does not shift the temperature ceiling. The extra 50 μm buys mechanical strength and changes heat-transfer time at sealing, not the sterilization condition itself.
Switching to F4569 — do I need to retune sealing?
Seal temperature range is unchanged and the window still exceeds 30°C, but expect to trim dwell time. With 15 μm more film, heat needs marginally longer to reach the seal interface; running F4568 's settings unchanged can leave seal strength low, so set from measured seal strength rather than by carrying parameters across.
What is F4569's recommended structure and container fit?
The same foil composite layup as F4568 , with the inner layer stepped up to 50 μm. That inner layer is the only interface touching the product and it governs how the lid peels after sterilization; on the container side it seals PP contact lens packaging in aseptic filling processes requiring high-temperature sterilization.
F4569 elongates 790% in both MD and TD — what does that symmetry give me?
Balanced directional behaviour. F4568 runs 670%/710%, a 40-point gap between directions; F4569 is even. On multi-cavity blisters, a web that responds equally in both directions gives a more predictable peel path, reducing the chance that one side breaks early while the other strings.