Vacuum plating method for PP (polypropylene) plastic and UV (ultraviolet) oil used therein

Abstract

The invention relates to a vacuum plating method for PP (polypropylene) plastic, which comprises the following steps that: after the surface of a PP plastic workpiece is cleaned, the PP plastic workpiece enters an automatic spraying machine to be prayed with a PP treatment agent; vacuum plating UV (ultraviolet) base oil is sprayed by the automatic spraying machine; the PP plastic workpiece enters a UV machine; vacuum plating and inspection are carried out; the PP plastic workpiece enters the UV machine; and inspection and finished product packaging are carried out. The PP treatment agent comprises the following components: toluene and polyolefin with functional groups; and the UV base oil comprises the following components: toluene, ethyl acetate, xylene, polyester acrylate resin, pure acrylic resin, reactive monomer TMPTA (trimethylol propyl triacrylate), an acrylic advection agent, a phosphate adhesion additive and a photoinitiator. In the method, the production process of flame treatment can be eliminated actually, without open flame, thereby complying with fire safety requirements; compared with the prior art, the aging resistance and durability of PP plastic are improved; and the process of the vacuum plating process of PP plastic is saved, and efficiency and qualified product rate are improved.

Description

technical field [0001] The invention relates to a plastic vacuum electroplating method and the UV oil used therefor, in particular to a polypropylene (abbreviated as PP in English) plastic vacuum electroplating method and the UV oil used therein. Background technique [0002] In the cosmetic packaging, electronics and other industries, many such as bottle caps, speakers, earphones, etc., are all PP plastic products. During the processing, UV oil (ultraviolet curing paint) and vacuum plating are required. The current production process is generally as follows: first flame treatment, then spraying PP treatment agent, then spraying UV primer, then vacuum electroplating, and then spraying UV top coat. Because the surface tension of non-polar polymer materials such as PP plastic is low, it is difficult for paint to adhere to PP plastic. Flame treatment can increase its surface tension, greatly improve the wetting performance of the plastic surface, and form an active surface. En...

AI Technical Summary

Problems solved by technology

However, this process requires an open flame in the spraying workshop, which does not meet the fire safety requirements; at the same time, the high temperature of the flame easily deforms the PP plastic, and also reduces the aging resistance and durability of the plastic.