Plastic box manufacturing process

1. Selection of materials: General plastic box packaging uses PET, PVC, PP and other materials, PVC, PET thickness are mostly ranging from 0.10-0.0.55, PP can be as thick as 0.75MM, because the material is too thick and out of the The plastic box is too hard and the appearance looks very dull.

2, film: the general print is the first film after the beer, but the plastic box is the first beer after the film, one is afraid of getting flower packaging, and the other is the plastic box pay attention to the overall appearance, plastic box membrane material must be manual Production, in order to achieve a certain degree of beauty.

3, printing: outside the plastic box is not printed, at most only silk screen, because the plastic box is the outer box, so the printing process is very high, the most taboo color differences, ink spots, fade these aesthetic shortcomings.

4. Sticky box: After the laminating machine, it needs to go through the stick box process (automatic stick box, artificial stick box). Sticky box needs to pay attention to the choice of glue, different materials need different types of glue.

5, surface treatment: plastic box packaging usually do surface treatment, common is the light glue, too dumb glue, over uv, light oil, over matte oil. It is also what we call the offset printing.

6, plate making: Nowadays, CTP plate making is generally adopted in plastic box plate making.

7, beer (die cutting): beer is a more important part of the printing process, to be quasi-match must be quasi-match, if the beer is not allowed, beer bias, beer constantly these will seriously affect the follow-up processing.