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High-Temperature Resistant Pre-Cooked Food Packaging - 121°C, Transparent Polyethylene | China Suppliers & Factory
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, which can completely maintain the packaging shape and avoid seal cracking or content extrusion caused by film shrinkage; at the same time, 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: the heat-sealing layer adopts a high-stability PE resin formula, which can form a dense and high-temperature resistant sealing layer at a heat-sealing temperature of 110–130℃, with a heat-sealing strength of 22–28N/15mm; the 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, there is no dripping after inversion for 24 hours, and the seal integrity rate is 100% after falling from a height of 1.5 meters, 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, and reducing production loss; the film has a wide heat-sealing temperature range (110–130℃), no need to frequently adjust 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 IPE film suitable for 121℃ retort sterilization?
The IPE film uses special modified polyethylene resin combined with multi-layer co-extrusion technology to precisely control the molecular structure. This allows the film to stably withstand 121℃ saturated steam retorting for 15–30 minutes without deformation, shrinkage, or seal failure, making it purpose-built for high-temperature sterilization processes.
Q
Is this IPE film safe for direct contact with food, including oily or high-temperature foods?
Yes. The raw materials comply with both FDA and EU 10/2011 food contact standards. No harmful substances are precipitated at 121℃, making the film safe for direct contact with high-temperature oily foods such as braised pork ribs and braised pork trotters.
Q
What is the heat-sealing strength of this film, and can it prevent leakage after retorting?
The film achieves a heat-sealing strength of 22–28N/15mm at a sealing temperature of 110–130℃. In actual tests, after retorting at 121℃ for 30 minutes, packages showed no dripping after inversion for 24 hours and maintained a 100% seal integrity rate after a 1.5-meter drop test, effectively eliminating leakage risks.
Q
How does the IPE film improve automated production line efficiency?
The film is produced using five-layer co-extrusion blown film technology with thickness deviation controlled within 2%–4%, far exceeding the industry standard of 5%–8%. This ensures smooth film transport on automated packaging lines, eliminates jamming, and supports compatibility with high-speed machines running at 80–120 bags per minute.
Q
Can branding and product information be printed on the IPE film?
Yes. The film supports surface printing, and pattern adhesion remains at 4B level even after 121℃ high-temperature retorting. This allows clear presentation of brand logos, product shelf life, sterilization marks, and other essential product information without degradation.
Q
What types of food products are best suited for packaging with this IPE film?
This film is ideal for prepared and ready-to-eat foods that require high-temperature retort sterilization for long-term room-temperature storage, including soup-based dishes (e.g., hot and sour soup, tomato beef brisket), braised meats (e.g., pork ribs, pork trotters), and other oily or high-moisture food products.