Frozen food packaging bags often appear problem analysis

In recent years, due to the substantial increase in the cold storage capacity of frozen food, as well as consumer recognition of frozen food, the frozen food market has shown a booming trend. The development of the global economy, changes in the pace of social life and family patterns, and changes in food structure are the main reasons for the rapid development of the frozen food industry. With the continuous popularity of frozen food packaging, higher requirements are also put forward for the performance of food packaging machines. Frozen food packaging is constantly changing, and it is gradually required that frozen food packaging machines have more functions.
The basic requirements of frozen food packaging are from production, transportation to sales, to maintain the quality characteristics of their products, to prevent bacterial contamination and to be convenient to eat. At present, there are two types of frozen food packaging: soft type and hard type. The soft type is based on plastic film. Thick and hard packaging, such as slightly thicker paper packaging boxes, composite aluminum foil stamped containers, etc., the former accounts for a larger proportion. Therefore, the food industry has high technical requirements for food packaging machines and is multi-functional. Today, the packaging machinery and equipment that have been put into the market for frozen food packaging are mainly: vacuum packaging machines, plastic sealing machines, and thermal shrinking machines.
In production, frozen food packaging is prone to the following problems:
1. the impact resistance of food packaging bags is poor, transportation, loading and unloading, shelf placement process is vulnerable to external force damage, easy to break the bag, bag opening phenomenon, not only affect the appearance of packaging products, but also can not play the role of packaging itself.
2. The smoothness of the food packaging bag itself is not good, the production process is characterized by poor opening, low production efficiency, and the utilization rate of the packaging bag will be reduced, resulting in waste of cost.
3. The heat sealing strength of the food packaging bag is not enough, and the heat sealing temperature is too high, resulting in the damage of the heat sealing layer, resulting in the reduction of the protective performance of the packaging bag, and the shelf life of the contents is greatly shortened, so that the contents cannot reach the corresponding shelf life.
4. The peeling strength between the layers of the food packaging bag is small, the breaking force is not enough, the mechanical properties of the packaging bag are poor, resulting in the layering of the packaging bag, the packaging bag can not achieve the due load-bearing effect, and the contents can not play an effective protective role.
5. The cold resistance of frozen food can not meet the requirements, in the case of low temperature, can not maintain the original performance of the material, the packaging material is brittle, so that the mechanical strength of the packaging material is reduced, resulting in the rupture and cracking of the packaging bag, but can not meet the protection of the contents.
6. The role of easy tearing of food packaging bags can not be effectively played, the tearing strength is too large to cause the bag is not easy to open, and the tearing strength is too small to reduce the mechanical properties of the bag, so it is necessary to meet the humanized design of the bag is easy to tear, but also to complete the protection of the product.
7, food packaging bag puncture performance, frozen food frozen is generally relatively hard, especially fish, meat products, containing bones and hard objects, transportation and stacking products extrusion is easy to make the packaging bag through, so that the sealing of the packaging bag caused damage, so frozen food packaging bag puncture requirements are very high.