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The heat-resistant heat-sealing film technology is well-established and suitable for high-temperature processing and sterilization requirements.

2025-12-30

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For specialized applications such as high-temperature steaming of pre-prepared dishes and sterilization of pharmaceutical products, heat-resistant heat-sealing film technology is gradually maturing and has become an important growth driver in the niche segment of the heat-sealing film industry. By introducing special copolymer components and functional additives into the film material and optimizing the thermal-setting process parameters, heat-resistant heat-sealing films can withstand high-temperature steaming above 121°C while maintaining excellent sealing performance and mechanical strength, without experiencing deformation or leakage issues.

During the production process, enterprises precisely control the heat-setting temperature and duration to eliminate residual stresses within the membrane material and enhance the dimensional stability of the product. The heat-setting temperature is typically maintained within the range of 80–120°C, and the setting time is adjusted according to the membrane thickness, ensuring stable performance of the product during subsequent high-temperature processing. Moreover, the integrated application of solvent-free lamination technology further improves the environmental friendliness and hygienic safety of heat-sealable membranes with enhanced heat resistance.

In terms of application scenarios, demand for heat-resistant heat-sealing films is growing rapidly in the pre-prepared meal packaging sector, with an annual growth rate reaching 12%. These films can meet the preservation and sealing requirements of pre-prepared meals after high-temperature sterilization. In the pharmaceutical packaging field, their heat resistance is well-suited to drug sterilization processes and complies with GMP standards; they are now gradually being adopted in the packaging of solid pharmaceuticals such as tablets and capsules. As the pre-prepared meal industry continues to develop and pharmaceutical packaging standards continue to rise, the market demand for heat-resistant heat-sealing films will keep expanding.

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