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Production Process For Packing Bags
Step 1: To do artwork , designers need to do some adjustments after receving customer's printing file , and it's better the printing file in PDF , coreldraw or AI . And to remark ziplock ,side sealing , hanging hole ,tear nortch , clear window and so on .To make the customer to know and approve the all details before production .
Step 2: plate making after confirmation, it need professional technicians to design color separation ,to do less color for more colorful printing to save cost for customer .
Step 3 : printing by high-speed presses , in this process, to pay more attention on ink pollution phenomenon occurred, it should avoid this phenomenon.
Step 4: compound 2 layer or more layers to 1 layer , the layer of the printed film like PET ,OPP to compoud aluminum foil and sealing layer ,like PE ,CPP with glue special by high-speed peritoneal machine
Step 5: curing, it need to more than 45 degrees in curing room for more than 24 hours curing afer compound, in order to make packaging is not easy to take off a layer.
Step 6: bag, it must be ensure that the color bags not leak ,and sealing side is good, to control certain temperature for hot knife .
Step 7: Packaging quality and safety testing, in the process, testing personnel need to measure, check appearance, color, heat sealing strength , it can't have any negligence.
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