High-temperature cooking bag refers to a composite packaging bag made of multiple layers of films with different functions and adhesives through dry compounding, which can be heat-sealed and can withstand high-temperature cooking. The high-temperature cooking mentioned here includes three situations: one is the half-high temperature cooking at 100 ° C-121 ° C, the other is the high-temperature cooking at 121 ° C-135 ° C, and the other is the ultra-high temperature cooking above 135 ° C.
High temperature cooking bags are subject to high temperature sterilization and longer shelf life at normal temperature, so the following requirements are required for the material-
First, good barrier performance;
Second, good heat resistance and low temperature resistance;
Third, very good puncture resistance;
Fourth, good composite strength and heat seal strength;
Fifth, the ink and glue used should also have good heat resistance and low temperature resistance.
——PET-C and NY-C represent high-barrier PET and high-barrier NY, respectively.
——PET, NY, AL are all good temperature-resistant materials;
——CPP
Because there are ordinary type and high temperature cooking type, so CPP must choose high temperature cooking type. At present, most of the high-temperature cooking CPPs are imported from Japan and Europe, and are sterilized below 121 ° C. At present, some large domestic CPP manufacturers can produce them, so domestic materials can be considered. The specific type of CPP needs to be selected according to the subsequent sterilization conditions and applications. If it is used as an easy-to-open application, you need to choose an easy-to-open CPP.
——Ink and glue should also use high-temperature cooking grade, high-temperature cooking glue is divided into aliphatic and aromatic. From a safety point of view, it is recommended that high-temperature cooking glues use aliphatic as much as possible, especially products exported to some countries with high safety requirements.
High-temperature cooking bags must provide adequate protection for the contents, so high-temperature cooking food sets a series of quality requirements for such packaging, as follows:
Sixth, the sanitary performance should meet the requirements of GB9683-88.
Seventh, the residual amount of solvent is not more than 10mg / m2.
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