1. Plate making: Nowadays, CTP plate making is commonly used in plastic box making.
2. 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 The plastic box is too hard and the appearance looks very dull.
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, surface treatment: plastic box packaging usually do surface treatment, the common is the light glue, too dumb glue, over uv, light oil, over matte oil. It is also what we call the offset printing.
The gloss of a PVC plastic box refers to the degree of specular reflection on the surface of the plastic box and is expressed as a percentage. The higher the gloss of the plastic box is, the more mirror-like the light reflected on the surface of the plastic box, the brighter the appearance characteristics. In fact, in addition to the specular reflection on the surface of the plastic box, there is diffuse reflection, which causes the gloss of the plastic box to decrease. High gloss plastic box raw materials, printing ink color is also more vivid, ink visual effect is also good. It can be said that the smoother the raw material of the plastic box, the higher the gloss and the higher the glossiness of the printed product. The glossiness and smoothness of the plastic box material are closely related.
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