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High-Temperature Resistant Cooking PE Film for 121℃ Sterilization - China Suppliers & Factory Solutions
Product Description
121℃ Retort Packaging-Specific IPE Film: All-PE Material Adapted to High-Temperature Sterilization, Guarding Room-Temperature Fresh Storage of Food
121℃ high-temperature retort is a core sterilization process for food to achieve long-term room-temperature storage. However, traditional films often fail to adapt to this temperature environment, resulting in problems such as film deformation, seal leakage, and barrier failure, which directly affect food safety and shelf life. Our 121℃ retort packaging-specific IPE film, through customized PE raw materials and multi-layer structure optimization, achieves precise adaptation to the 121℃ retort process, solving industry pain points from three dimensions of temperature resistance, sealing, and automated processing, and providing a stable and reliable packaging solution for food enterprises.
1
Precise Temperature Resistance Design for 121℃ Retort: Stable and Reliable in High-Temperature Environment
Special modified polyethylene resin is used as the core raw material, combined with multi-layer co-extrusion technology to precisely control the film's molecular structure, enabling the film to stably withstand 121℃ saturated steam retorting (conventional sterilization time 15–30 minutes).
After high-temperature retorting, the horizontal and vertical shrinkage rates of the film are both < 2% — with no shrinkage or deformation, completely maintaining the packaging shape and avoiding seal cracking or content extrusion caused by film shrinkage.
The raw materials comply with FDA and EU 10/2011 food contact standards, with no harmful substances precipitated at 121℃, ensuring food hygiene and safety even when directly in contact with high-temperature oily foods (such as braised pork ribs, braised pork trotters).
After high-temperature retorting, the horizontal and vertical shrinkage rates of the film are both < 2% — with no shrinkage or deformation, completely maintaining the packaging shape and avoiding seal cracking or content extrusion caused by film shrinkage.
The raw materials comply with FDA and EU 10/2011 food contact standards, with no harmful substances precipitated at 121℃, ensuring food hygiene and safety even when directly in contact with high-temperature oily foods (such as braised pork ribs, braised pork trotters).
2
High-Temperature Tough Seal: No Leakage or Cracking After Retorting
To solve the industry problem of easy seal failure after 121℃ retorting, an innovative "high-temperature resistant heat-sealing layer + interlayer reinforcement structure" is designed:
Heat-sealing layer: Adopts a high-stability PE resin formula, forming a dense and high-temperature resistant sealing layer at a heat-sealing temperature of 110–130℃, with a heat-sealing strength of 22–28 N/15mm.
Interlayer reinforcement structure: Improves the film's integrity through molecular bonding technology, avoiding the risk of delamination. Even after 121℃ high-temperature retorting, the seal can resist external extrusion and stretching.
According to actual tests, after packaging prepared dishes with soup (such as hot and sour soup, tomato beef brisket) and retorting at 121℃ for 30 minutes: No dripping after 24-hour inversion · 100% seal integrity after 1.5m drop test — completely solving the leakage risk of retort packaging.
Heat-sealing layer: Adopts a high-stability PE resin formula, forming a dense and high-temperature resistant sealing layer at a heat-sealing temperature of 110–130℃, with a heat-sealing strength of 22–28 N/15mm.
Interlayer reinforcement structure: Improves the film's integrity through molecular bonding technology, avoiding the risk of delamination. Even after 121℃ high-temperature retorting, the seal can resist external extrusion and stretching.
According to actual tests, after packaging prepared dishes with soup (such as hot and sour soup, tomato beef brisket) and retorting at 121℃ for 30 minutes: No dripping after 24-hour inversion · 100% seal integrity after 1.5m drop test — completely solving the leakage risk of retort packaging.
3
Automated Compatibility Process: Improve Production Efficiency
Produced by precision five-layer co-extrusion blown film technology, the film's thickness deviation is strictly controlled within 2%–4%, far better than the industry's conventional standard of 5%–8%, ensuring smooth transportation of the film on the automatic retort packaging line — no jamming or waste film, reducing production loss.
The film has a wide heat-sealing temperature range (110–130℃), requiring no frequent adjustment of equipment parameters, and can be compatible with high-speed retort packaging machines of 80–120 bags per minute, greatly improving production line efficiency.
In addition, the film supports surface printing, and the pattern adhesion still reaches 4B level after 121℃ high-temperature retorting, which can clearly present key information such as brand logos, product shelf life, and sterilization marks — balancing production practicality and brand information transmission.
The film has a wide heat-sealing temperature range (110–130℃), requiring no frequent adjustment of equipment parameters, and can be compatible with high-speed retort packaging machines of 80–120 bags per minute, greatly improving production line efficiency.
In addition, the film supports surface printing, and the pattern adhesion still reaches 4B level after 121℃ high-temperature retorting, which can clearly present key information such as brand logos, product shelf life, and sterilization marks — balancing production practicality and brand information transmission.
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Frequently Asked Questions
Q What makes the 121℃ IPE retort film different from standard packaging films?
A Unlike standard packaging films, this IPE film is engineered with special modified polyethylene resin and a multi-layer co-extrusion structure specifically designed to withstand 121℃ saturated steam sterilization. It maintains a shrinkage rate below 2% after retorting, preventing deformation, seal failure, or barrier breakdown that commonly occur with conventional films.
Q Is this film certified safe for direct contact with food, including oily or high-temperature contents?
A Yes. The raw materials used comply with both FDA and EU 10/2011 food contact safety standards. The film releases no harmful substances at 121℃, making it safe for direct contact with high-temperature oily foods such as braised pork ribs and pork trotters.
Q What is the heat-sealing strength of this film, and how does it prevent leakage after retorting?
A The film achieves a heat-sealing strength of 22–28 N/15mm using a high-stability PE resin formula at a sealing temperature of 110–130℃. Combined with an interlayer reinforcement structure using molecular bonding technology, the seal remains intact even after 121℃ retorting for 30 minutes — verified by a 100% seal integrity rate in 1.5-meter drop tests and no leakage after 24-hour inversion.
Q Is this IPE film compatible with high-speed automated retort packaging lines?
A Yes. Produced via five-layer co-extrusion blown film technology with a thickness deviation of only 2%–4% (versus the industry standard of 5%–8%), the film runs smoothly on automated lines without jamming. Its wide heat-sealing temperature window (110–130℃) allows compatibility with high-speed machines producing 80–120 bags per minute, minimizing downtime and production loss.
Q Can the film be printed with brand logos or product information, and does the print survive retorting?
A Yes. The film supports surface printing, and print adhesion reaches 4B level even after 121℃ high-temperature retorting. This allows brands to clearly display logos, shelf life information, sterilization marks, and other essential product details without degradation after the sterilization process.
Q What types of food products are best suited for packaging with this 121℃ IPE retort film?
A This film is ideal for ready-to-eat and prepared food products that require high-temperature sterilization for room-temperature shelf stability. Suitable applications include braised meats (pork ribs, pork trotters), soupy prepared dishes (hot and sour soup, tomato beef brisket), and other oily or liquid-containing foods that demand both strong sealing performance and food-safe barrier properties.