Surface wire drawing technology for plastic structure

Abstract

The invention discloses a surface wire drawing technology for a plastic structure. According to the process, the conventional ultraviolet (UV) transfer print and lateral polished in mold labeling (IML) process is regulated in several aspects: a base film sheet is made of a polycarbonate (PC) material, an ultraviolet (UV) layer is made of UV4700 and has the thickness of 4.5um, a die joint is positioned at a joint of the lateral surface of a plastic piece and a plane, and a chilled water cooling water circuit is adopted in injection. The process can effectively overcome defects in the prior art, and requirements for high hardness, high texture, high touch feel and the like on plastic structures of the industry and the market are met. According to the process, the conventional production line is not required to be greatly improved, and extra staff training is not required, so that production cost is greatly saved and materials for substituting are low in cost.

Description

Technical field [0001] The invention belongs to the technical field of surface treatment processes, and specifically relates to a surface drawing process of a plastic structure. Background technique [0002] IMD (In-Mold Decoration) is a new technology that places Film in an injection mold to decorate the surface of the plastic. At present, there are two manufacturing methods for IMD: one is to make the printed film into a circulating roller roll belt, install it in the injection molding machine and the injection mold, like a label on the front mold surface, and fully automatic circulating belt moving The method is called IMD (In-Mold Transfer Injection Molding); the other is to print the Film film, pass it into a molding machine, and then cut it and place it in an injection mold. This method is called It is IML (in-mold injection molding). [0003] At present, there are mainly the following processes for surface drawing of plastic structures: [0004] 1. The drawing lines are etc...

AI Technical Summary

Problems solved by technology

[0022] For the embossing operation of the base film sheet in step 1, the existing base film sheet is made of PET, but the inventors found that the PET material is a crystal, the UV layer is difficult to bite in, and the drawing UV layer is easy to fall off, resulting in The problem of poor surface wear resistance; therefore, the inventor considers to choose a suitable base film sheet material that can not only ensure the surface drawing quality of plastic parts, but also effectively solve the problem of poor surface wear resistance. By studying a large number of alternative materials Finally, the inventor chooses PC material to replace PET material as the base film sheet, and the base film sheet adopts PC material, then the UV layer can be occluded to the substrate layer, so that the UV layer has good wear resistance; The thickness of the PC material base film sheet was also optimized, and the thickness of the PC material base film sheet was selected as 0.1mm, because the inventor found after research that the base material of 0.1mm is relatively thin, which is not easy to cause deformation of the product after injection molding