Product Photo
Retort CPP Film F4513 (70μm)
High-performance cast polypropylene retort film that keeps the original flavor of food. Withstands pressurized high-temperature sterilization to 130°C, safe and hygienic for direct food contact in retort pouches.
A Robust Sealant Layer for Room-Temperature Shelf-Stable Pouches
Laminated into a structure such as PET 12μm // AL // RCPP, F4513 forms the inner sealant layer of a full-barrier retort pouch — the wall that must survive pressurized autoclave sterilization, the standard process for making ready-to-eat foods and certain pharmaceuticals shelf-stable at room temperature. Unlike thinner sealants that can pinhole or weaken under repeated handling and distribution, its 70μm gauge gives converters a tougher, more puncture-resistant pouch wall while still sealing cleanly and reliably at high speed.
Where F4513 Is Used
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Room-Temperature RTE Packaging
Packaging material for ready-to-eat food stored and circulated at room temperature. F4513 is a 70μm cast polypropylene retort film that lets a sealed pouch travel and sit on a shelf without refrigeration.
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Retort Pouches for RTE Foods
High-temperature sterilization retort pouches for ready-to-eat (RTE) foods, such as chicken broth pouches, instant noodle soup packages, and instant food packages. As a cast PP sealant it keeps the original flavor of the food through the retort cycle.
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Pharmaceutical Autoclave Pouches
Retort pouch packaging for pharmaceuticals requiring autoclave sterilization. The recommended structure is PET 12μm // AL // RCPP, where the foil blocks light and oxygen and F4513 forms the sealed, direct-contact inner layer.
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Heat Resistant to 130°C
Heat resistant up to 130°C, suitable for pressurized high-temperature sterilization. That headroom above the common 121°C retort cycle is what lets processors run shorter, hotter schedules without risking the seal.
Full Specifications — F4513 (RCPP #70)
F4513 is the 70μm grade in Intlpak's RCPP retort film line — a 70 micron retort CPP film used as the heat-seal food-contact layer in a PET 12μm // AL // RCPP retort pouch laminate, resisting pressurized high-temperature sterilization to 130°C. Full published specifications are listed below.
| Thickness | 70 μm |
|---|---|
| Heat Resistance | Up to 130°C, suitable for pressurized high-temperature sterilization |
| Recommended Structure | PET 12μm // AL // RCPP |
| Width | Customized |
| Length | Customized |
Detailed mechanical property values (yield/break point, elongation, C.O.F., haze) were not published for this SKU at the time of writing — contact our engineers for a full technical data sheet.
Reviewed by: Intlpak R&D Team.
Why Converters Choose F4513
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 F4513
F4513 is an RCPP sealant — how does it differ from the EO-RCPP easy-peel films?
Opening behaviour. F4513 is a standard RCPP heat-seal layer built for a permanent, secure seal; EO-RCPP grades such as F45A7 add an easy-peel phase so a consumer can open by hand. Choose F4513 where accidental opening must be prevented or the pack is opened downstream in the plant; choose the easy-peel series where retail hand-opening is required.
F4513 is rated 130°C — can it run a 121°C retort process?
Yes. 130°C is the ceiling, comfortably covering the 121°C pressurized sterilization used for most retort foods. RCPP (Retort CPP) is cast polypropylene developed specifically for retort service, holding seal strength and dimensional stability after sterilization. Validate your exact process with sample material first.
What laminate structure is recommended for F4513?
PET 12 μm // AL 9 μm // RCPP 70 μm — one layer fewer than the easy-peel series, which adds ONY. The PET carries print and heat-stable structure, the foil handles light and oxygen barrier, and F4513 is the 70 μm food-contact sealant. This structure is standard for retort pouches and flexible sterilized meals.
Is 70 μm enough for stand-up or flexible retort pouches?
It is. 70 μm gives ample seal thickness and puncture margin, and is a common inner-layer gauge for flexible sterilized food packs. Where contents include bone or hard fragments, send actual samples so our engineers can assess whether additional gauge or a structural change is warranted.
F4513 publishes no peel-force curve — is the data incomplete?
It isn't a gap; the metric doesn't apply. Peel-force curves characterise easy-peel films, mapping the band where a lid both opens and holds. F4513 is specified for a permanent seal, where seal strength — not peel force — is the relevant validation. Full seal-strength data is available from our engineering team on request.
What is the plastic layer inside a retort food pouch?
It is the sealant — the innermost layer that touches the food and forms the seal. F4513 is a 70 μm retort CPP film used as that layer in a PET 12 μm // AL // RCPP structure, resisting pressurized sterilization to 130°C. The outer PET carries print and strength, the aluminium blocks light and oxygen, and the RCPP holds the seal through the autoclave.
Retort pouch or metal can — what changes for the producer?
A pouch is lighter, ships flatter and heats through faster, which shortens the sterilization cycle; a can is more robust and needs no outer carton. Both give ambient shelf life without refrigeration. The pouch depends entirely on its sealant layer holding through the autoclave — F4513 is rated to 130°C for exactly that duty.