Manufacturing process of high-temperature resistant cooking bag

High-temperature resistant cooking bag manufacturing process Most of the cooking bags in the world are made by dry compounding method, and a few can also be made by solvent-free compounding method or co-extrusion compounding method. The quality of dry composite is higher than that of solvent-free composite, and the arrangement and combination of materials are more reasonable and extensive than that of co-extrusion composite, and the use is more secure. In China, 100% of cooking bags are manufactured by dry compounding method, so we will only talk about the manufacturing process of dry compounding.

Material selection. According to the purpose of the cooking bag, determine which base materials to use, how to combine, and which ink and adhesive to use. The so-called end use refers to the nature of the food to be packaged and the weight of the package. How high temperature (121 ℃, 128 packages) should be withstood after packaging, so that the packaging bag has a reasonable cost performance ratio, so it is important to know the final use. The second is to determine the process parameters. After determining the base material and auxiliary materials, you can place an order to the workshop for production. As the technical management and operator of the workshop production, you must strictly follow the requirements of the process sheet to collect and prepare materials. Don't make mistakes.

Then, during the specific operation, the process parameters of the process sheet should be followed, including the number of lines and dot depth of the gluing roller, the concentration of the operating glue, the temperature of each heating section of the drying tunnel, the size of the exhaust air volume of the air blast quantum port, the speed of starting up, as well as the control of the unwinding tension, the drying tunnel tension, the winding tension, the surface temperature and the composite pressure of the composite steel roller, etc. Among the above process parameters, the requirements for gluing amount (generally 4~5g/m2) and residual solvent amount (the national standard is less than 10mg/m2, and the internal control of enterprises is preferably less than 3mg/m2) are the key to improve the internal quality of cooking bags, which must be taken seriously.