Plastic box production process
1. Plate making: now the glue box plate making generally adopts CTP plate making.
2, material: plastic box packaging are commonly used materials such as PET, PVC, PP, PVC, PET thickness is 0.10-0.0.55 mostly, PP is 0.75 MM thick, because the material is too thick framed out the box is too hard, appearance looks very dull.
3, printing, plastic boxes outside will not print, best printing, because the plastic box is the bottle, so the printing requirements process is very high, the most taboo color difference, ink, rub off the influence of aesthetic.
4. Surface treatment: the packaging of the glue box usually requires surface treatment, and the common ones are overgloss glue, overmatte glue, over-uv, over-gloss oil and over-matte oil.That's what we call offset printing.
5. Beer (die-cutting) : beer is a relatively important link in the printing process. If beer is not allowed, beer deviation and continuous beer will seriously affect the subsequent processing.
6 and labeling: usually prints are first beer after membrane, but plastic box is beer before the film, one is afraid make flower packaging, 2 it is to pay attention to the whole beautiful glue box, plastic box of the membrane material must be made by hand, it can achieve a beautiful.
7. Adhesive box: after the film laminating machine, it needs to go through the process of box sticking (automatic box sticking and manual box sticking). The adhesive box needs to pay attention to the selection of glue, and different materials need different types of glue.