Cooking bag is a kind of functional packaging bag commonly used in food industry. It has the advantages of light weight, small volume, fast heat conduction, short sterilization time, and can better maintain the color and flavor of the contents. It is a good choice to replace some iron cans and glass cans. However, due to the many functions of its packaging materials are greatly affected by the process of bag making and sterilization, there is a potential risk of bag breaking. Here, the red wine bag manufacturers will analyze with you, what are the reasons for the high-temperature cooking packaging bag broken.
1： Base material
The cooking bag is heated together with the commodity, which requires that the base material of the cooking bag still has a very good stability after cooking, especially the stability of the scale after cooking cooling. If the thermal stability of the substrate is not good, it is easy to break the bag after shortening the cooking cooling.
Red wine bag manufacturers usually choose pet, NY, Al, rcpp and other substrates with good heat resistance. They should pay attention to the shelf life of various substrates, especially the shelf life of rcpp. As the inner layer of high-temperature cooking, rcpp plays a decisive role in the function of cooking bags. If the quality of rcpp is poor, it may have passed the shelf-life, and it will be compressed to a great extent after cooking and cooling There will be embrittlement on the surface, causing fracture.
2： Bag making technology
Don't think that the bag material is qualified, the bag making technology is also very important to the quality of the bag. Generally speaking, the temperature, pressure and machine speed of the heat sealing knife are the three major elements of bag making technology. In order to make a good sealing bag, the three elements should make perfect cooperation. Heat sealing is the effect of heat and force together. On the one hand, macromolecules diffuse, permeate and surround each other on the sealing surface in the molten state, and on the other hand, the polymer molecules in the molten state fuse the upper and lower films into one by virtue of the pressure of the heat sealing cutter, which can have a certain strength after cooling and shaping.
The high requirements of the use environment require that the cooking bag has strong heat sealing strength, which requires the red wine bag manufacturer to set the temperature and pressure reasonably for the structure of the cooking bag and the substrate of the inner layer. At the same time, the user should pay attention to the cooling after the heat sealing. When cooling, the orientation of the just melted heat seal should be shaped with a lower temperature under a certain pressure to eliminate the process of stress concentration. With regard to the process of bag making, especially the manufacturing of cooking bag, special attention should be paid to the reasonable distribution of temperature, pressure and machine speed, so as to ensure that the bag can not be broken in the subsequent processing. http://www.dgbpk.com/
Dongguan Beite packaging materials Co., Ltd
Aluminum foil packaging bags, mask bags, self-supporting zipper bags, eight side sealing bags, red wine bags, dog food bags, beverage bags, bags in boxes, wrapped films, perforated fruit bags.