Printing , compounding and bag making can be described as the three most important processing steps of film flexible packaging . In the first two periods, the printing and craftsman brought you the relevant control points of high temperature cooking bag printing and high temperature cooking bag compounding. Today, the printing small craftsman is for everyone. Bring the bag control requirements of the high temperature cooking bag, if there is any omission, please tell the Indian craftsman (micro signal: yinshuajishu1957), the Indian chef will promptly add.
Before batch bag making, sample tests were carried out to determine the processing parameters , including the temperature, pressure and machine speed of each section of the heat-sealing knives, and these parameters ensure that the heat-sealing strength before and after cooking can reach the standard. The content of the same capacity is loaded into a high temperature cooking tester to test the resistance of the medium to determine the conformity of the material structure.
It is ensured that the film before the bag is fully cooled, and the composite strength between the layers, the solvent residue of the film, etc. have been met after the test, and the first inspection item is confirmed.
The width of the heat seal at the time of bag making is not less than 5 mm. In addition, in order to ensure the flatness and beauty of the heat sealing area, the cooling mold must ensure a sufficiently low temperature, generally below 25 °C. Fully check the circulation of the cooling water.
The adaptability evaluation of the film roll during the bag making process should be sufficient to ensure smooth filming at each production, good heat sealing condition, and stable bag making quality. In particular, RCPP is used as a heat seal layer, which tends to cause poor opening of the bag, and it is necessary to prevent the bag from being knotted due to poor opening. The friction coefficient should be controlled before production, and it is recommended to be in the range of 0.15~0.18COF.
Due to the particularity of high-temperature cooking materials and processes, the sampling rate of high-temperature cooking products should be appropriately increased during the bag making process, so that the quality of the process can be detected early, and the cooking test should be done once in a production shift. The test method should be correct. To simulate the customer's use conditions, that is, to enclose the contents of the same capacity and the same nature, according to the customer's sterilization conditions (mainly cooking temperature, time, pressure, such as conditional parameters of 121 ° C, 40 min, 0.2 ~ 0.24 MPa) High temperature cooking test.
Choose the right amount of packaging according to the size and weight of the bag, pay attention to protection and prevent mechanical damage to the bag.
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