济南订做食品包装袋：能做耐寒处理冷冻食品包装袋吗？

来源：/ 日期：2025-05-14

　　在食品工业蓬勃发展的当下，冷冻食品以其便捷、多样的特点，成为消费者日常生活的重要选择。然而，冷冻食品的品质保障离不开的包装，其中，食品包装袋的耐寒性能关重要。济南的食品包装袋订做企业深谙此道，凭借的技术、严格的工艺把控和持续的创新精神，在冷冻食品袋耐寒处理方面展现出的能力，为冷冻食品的储存与运输保驾护航。

　　In the current booming food industry, frozen foods have become an important choice for consumers in their daily lives due to their convenience and diversity. However, the quality assurance of frozen food cannot be separated from high-quality packaging, among which the cold resistance of food packaging bags is crucial. Food packaging bag customization companies in Jinan are well versed in this field. With advanced technology, strict process control, and a continuous spirit of innovation, they have demonstrated excellent professional capabilities in cold resistant processing of frozen food bags, ensuring the safe storage and transportation of frozen food.

　　一、冷冻食品对包装袋耐寒性的严苛要求

　　1、 Strict requirements for cold resistance of packaging bags for frozen foods

　　冷冻食品在储存和运输过程中，需长期处于低温环境，一般温度低 -18℃甚更低。在如此低温条件下，普通食品包装袋的材料性能会发生显著变化。塑料材质的包装袋可能会变硬、变脆，韧性和拉伸强度大幅下降，轻微的挤压、碰撞就可能导致破裂，使食品与外界环境接触，从而引发变质、污染等问题。此外，冷冻食品在解冻过程中会产生冷凝水，这要求包装袋不仅要具备良好的耐寒性，还需拥有出色的防潮、防渗透性能，以维持食品的品质和性。因此，针对冷冻食品的特性，研发和生产具备高耐寒性能的食品包装袋，成为济南食品包装袋订做企业的重要课题。

　　Frozen foods need to be stored and transported in a low-temperature environment for a long time, usually at temperatures as low as -18 ℃ or even lower. Under such low temperature conditions, the material properties of ordinary food packaging bags will undergo significant changes. Plastic packaging bags may become hard and brittle, with a significant decrease in toughness and tensile strength. Slight squeezing or collision can cause breakage, allowing food to come into contact with the external environment and leading to problems such as spoilage and contamination. In addition, frozen foods will produce condensation during the thawing process, which requires packaging bags to not only have good cold resistance, but also excellent moisture and penetration resistance to maintain the quality and safety of the food. Therefore, developing and producing food packaging bags with high cold resistance based on the characteristics of frozen foods has become an important issue for Jinan food packaging bag customization enterprises.

　　二、济南企业在冷冻食品袋耐寒处理上的技术创新

　　2、 Technological innovation of Jinan enterprises in cold resistant treatment of frozen food bags

　　（一）精选耐寒原材料

　　（1） Selected cold resistant raw materials

　　济南的食品包装袋订做企业在原材料选择上精益求精。优先选用耐寒性能优异的高分子材料，如线性低密度聚乙烯（LLDPE）、乙烯 - 乙烯醇共聚物（EVOH）等。LLDPE 具有良好的柔韧性和耐低温性能，在低温环境下仍能保持一定的弹性，不易脆裂；EVOH 则以其出色的阻隔性能著称，能有效阻挡氧气、水分的渗透，防止冷冻食品氧化变质和水分流失。企业还会根据不同冷冻食品的需求，将多种材料进行科学配比和复合，形成多层结构的包装袋，各层材料各司其职，共同提升包装袋的综合性能。例如，通过将具有高阻隔性的材料与耐寒性强的材料复合，既能保证包装袋在低温下的物理性能稳定，又能有效保护食品品质。

　　Jinan's food packaging bag customization enterprises strive for excellence in raw material selection. Priority should be given to using high molecular weight materials with excellent cold resistance, such as linear low-density polyethylene (LLDPE), ethylene vinyl alcohol copolymer (EVOH), etc. LLDPE has good flexibility and low temperature resistance, and can maintain a certain degree of elasticity in low temperature environments, making it less prone to brittle cracking; EVOH is known for its excellent barrier performance, which can effectively block the penetration of oxygen and moisture, prevent frozen food from oxidizing and deteriorating, and prevent moisture loss. Enterprises will also scientifically mix and composite various materials according to the needs of different frozen foods, forming multi-layer structured packaging bags. Each layer of material plays its own role, jointly improving the comprehensive performance of the packaging bag. For example, by combining materials with high barrier properties and strong cold resistance, it is possible to ensure the physical stability of packaging bags at low temperatures while effectively protecting food quality.

　　（二）优化生产工艺

　　（2） Optimize production process

　　在生产过程中，济南企业对工艺进行了一系列优化，以增强冷冻食品袋的耐寒性能。在吹膜环节，精确控制温度、压力和牵引速度等参数。较低的吹膜温度有助于提高薄膜的结晶度和密度，使薄膜在低温下更加坚韧；合理的压力和牵引速度则能保证薄膜厚度均匀，避免因厚度不均导致的局部强度不足。在制袋阶段，采用的热封技术，严格控制热封温度和时间。合适的热封温度既能确保封口牢固，又不会因温度过高破坏材料的耐寒性能；精确的热封时间则保证封口处的材料充分融合，形成紧密的密封结构，防止冷冻食品在储存过程中漏气、渗水。此外，部分企业还引入了的在线检测设备，实时监测包装袋的各项性能指标，一旦发现问题，及时调整生产工艺，确保产品质量稳定。

　　During the production process, Jinan enterprises have carried out a series of optimizations to enhance the cold resistance of frozen food bags. In the blown film process, precise control of parameters such as temperature, pressure, and traction speed is required. A lower blown film temperature helps to improve the crystallinity and density of the film, making it more durable at low temperatures; Reasonable pressure and traction speed can ensure uniform film thickness and avoid local strength deficiency caused by uneven thickness. In the bag making stage, advanced heat sealing technology is adopted to strictly control the heat sealing temperature and time. The appropriate heat sealing temperature can ensure a firm seal without damaging the material's cold resistance due to excessive temperature; Accurate heat sealing time ensures that the materials at the sealing point are fully fused to form a tight sealing structure, preventing air and water leakage during storage of frozen food. In addition, some enterprises have also introduced advanced online detection equipment to monitor the various performance indicators of packaging bags in real time. Once problems are found, production processes are adjusted in a timely manner to ensure stable product quality.

　　（三）应用新型耐寒技术

　　（3） Applying new cold resistant technologies

　　为进一步提升冷冻食品袋的耐寒性能，济南的食品包装袋订做企业积极探索和应用新型技术。例如，采用纳米技术对材料进行改性，在高分子材料中添加纳米级的无机粒子或纤维，这些纳米粒子能够均匀分散在材料内部，增强材料的分子间作用力，提高材料的韧性和强度，从而显著改善包装袋的耐寒性能。同时，一些企业还在研究和应用智能材料技术，使包装袋能够根据环境温度的变化自动调节性能，如在低温环境下自动增强柔韧性，为冷冻食品提供更可靠的保护。

　　To further enhance the cold resistance of frozen food bags, food packaging bag customization enterprises in Jinan actively explore and apply new technologies. For example, using nanotechnology to modify materials, adding nano-sized inorganic particles or fibers to polymer materials, these nanoparticles can be uniformly dispersed inside the material, enhancing the intermolecular forces of the material, improving its toughness and strength, and significantly improving the cold resistance of packaging bags. At the same time, some companies are also researching and applying smart material technology to enable packaging bags to automatically adjust their performance according to changes in environmental temperature, such as automatically enhancing flexibility in low-temperature environments, providing more reliable protection for frozen food.

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