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121℃ High-Temperature Resistant Cooking PE Packaging Film - China Suppliers & Factory for Food Sterilization
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 22–28 N/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.
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.
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.
Frequently Asked Questions
Q1
What makes the IPE film specifically suitable for 121℃ retort sterilization?
The IPE film is formulated with special modified polyethylene resin and manufactured using multi-layer co-extrusion technology. This precise molecular structure control allows it to withstand 121℃ saturated steam retorting for 15–30 minutes without deformation, shrinkage, or seal failure, making it uniquely adapted to high-temperature food sterilization requirements.
Q2
Is the IPE film safe for direct contact with food, including oily or high-temperature foods?
Yes. The raw materials used comply with both FDA and EU 10/2011 food contact standards. The film releases no harmful substances at 121℃, making it safe even for direct contact with high-temperature oily foods such as braised pork ribs and braised pork trotters.
Q3
How does the film prevent seal leakage after high-temperature retorting?
The film uses an innovative "high-temperature resistant heat-sealing layer + interlayer reinforcement structure." The heat-sealing layer forms a dense, high-stability seal at 110–130℃ with a strength of 22–28 N/15mm, while the interlayer molecular bonding technology prevents delamination. Verified by actual testing, packages show 0% leakage after inversion for 24 hours and 100% seal integrity after a 1.5-meter drop test.
Q4
Can this IPE film be used with high-speed automated packaging lines?
Absolutely. The film's thickness deviation is controlled within 2%–4% (well below the industry standard of 5%–8%), ensuring smooth feeding on automated lines with no jamming. Its wide heat-sealing temperature range (110–130℃) also eliminates the need for frequent parameter adjustments, and it is compatible with retort packaging machines running at 80–120 bags per minute.
Q5
Does printing on the IPE film remain intact after 121℃ retorting?
Yes. The IPE film supports surface printing, and the pattern adhesion remains at 4B level even after 121℃ high-temperature retorting. This allows brand logos, product shelf life information, and sterilization marks to remain clear and legible throughout the entire retort process.
Q6
What types of food products are best suited for packaging with this IPE film?
This IPE film is ideal for prepared foods and ready-to-eat meals that require 121℃ retort sterilization for long-term room-temperature storage. It is especially well-suited for soup-based dishes (such as hot and sour soup and tomato beef brisket) and oily meat products (such as braised pork ribs and braised pork trotters) that demand both high-temperature resistance and leak-proof sealing.