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High-Temperature Resistant Cooking PE Bags for Prepared Dishes - 121℃ Sterilization, 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 this IPE film suitable specifically for 121℃ retort sterilization?
The film is engineered using specially modified polyethylene resin combined with 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 purpose-built for high-temperature retort packaging applications.
Q
Does the film comply with international food safety standards?
Yes. The raw materials used in this IPE film comply with both FDA (USA) and EU 10/2011 food contact material standards. No harmful substances are released at 121℃, making it safe for direct contact with high-temperature oily foods such as braised meats and stewed dishes.
Q
What is the heat-sealing strength of this film after retorting?
The film achieves a heat-sealing strength of 22–28N/15mm within a heat-sealing temperature range of 110–130℃. After 121℃ retorting for 30 minutes, the seal integrity rate remains 100%, even passing a 1.5-meter drop test without any leakage.
Q
Is this IPE film compatible with automated high-speed packaging lines?
Absolutely. Thanks to its tight thickness deviation control of 2%–4% (far better than the industry standard of 5%–8%), the film runs smoothly on automated retort packaging lines. It is compatible with high-speed packaging machines operating at 80–120 bags per minute, reducing downtime and production waste.
Q
Can the film be printed on, and does printing survive the retort process?
Yes. The film supports surface printing, and the printed pattern adhesion maintains a 4B level even after 121℃ high-temperature retorting. This ensures that brand logos, product shelf life information, and sterilization marks remain clearly visible after the sterilization process.
Q
What types of food products is this retort IPE film best suited for?
This film is ideal for a wide range of prepared and ready-to-eat food products that require room-temperature shelf storage, including braised meats (pork ribs, trotters), soup-based dishes (hot and sour soup, tomato beef brisket), and other high-temperature processed foods that undergo 121℃ retort sterilization.