Printing compound process of aluminum foil bag
1 The general printing color is CMYK . The printed aluminum foil bag is different from the computer display. This must be notified to the customer in advance to avoid the customer feeling of difference. And because it is printed by the machine in batches, it will cause individual color inaccuracies. The transparency of the shading color value of the aluminum foil bag should not be less than 10% , so as not to cause the finished product to be unable to appear when printing. If the first batch of printed aluminum foil vacuum packaging bags is completed, the customer needs to add printing, because the large machine printing, the color difference is definitely there, you need to inform the customer in advance, based on the sample color.
2 The amount of glue applied is about 1.5 times that of the white film . When the printing is full or the printing area is large, the amount of glue should be further expanded. 3 After the first pass of compounding and curing for 13 hours, the second pass of compounding is carried out, and the product is cured for 72 hours.
3 The aluminum foil does not pass through the flattening roller, and it enters into the composite roller.
4 Tension control.
5 The temperature of the oven and compound roller should be increased as much as possible.
Aluminum foil bag cutting process :
1 Cutting edge of aluminum foil bag: cutting off the process materials required in the production of the previous process, in order to make bags or other uses.
2 Cutting of aluminum foil bags: the wide-width materials are cut into various specifications to meet the needs of packaging equipment and packaging specifications.
3Aluminum foil bag sub-roll: divide the material with large roll diameter into multiple rolls with small roll diameter for easy use.
4Rewinding of aluminum foil bag: reversing the direction of the material or winding the irregular materials neatly, making small rolls into large rolls, etc.
5 The aluminum foil bag can correct the appearance defects such as the wrong layer of the product by slitting / rewinding, and improve the product grade.
During 6 -slit cutting, the quality of the entire length of the film can be re-examined to remove defective parts. Sometimes these methods can also be mixed. In terms of which process is used for cutting, the material part after cutting should meet the size requirements, such as the width and length of the cutting material should meet the requirements of quality aluminum foil packaging bags, such as the flatness of the coil Degree, appearance quality and other technical missteps.
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