UV extruding and transfer printing forming process

Abstract

The invention relates to an ultraviolet (UV) extruding and transfer printing forming process, which comprises the following steps of: performing first-stage drying, namely heating a transfer printing film which is provided with a basal layer, a de-bonding layer, a UV protective layer, a printing layer and a hot melt adhesive layer in turn, so that the de-bonding layer, the UV protective layer, the printing layer and the hot melt adhesive layer can be formed on the basal layer, and the UV protective layer is kept to have flexural ductility; performing extruding and transfer printing, namely heating to melt the hot melt adhesive layer, pressing and attaching one side of the hot melt adhesive layer of the transfer printing film to the surface of an extruded workpiece by using a pressing wheel, so that the printing layer and the UV protective layer can be adhered to the surface of the extruded workpiece by the hot melt adhesive layer; de-bonding, namely tearing off the basal layer, and ensuring that the UV protective layer and the printing layer are still adhered to the surface of the extruded workpiece by the hot melt adhesive layer; and performing second-stage drying, namely irradiating UV rays to the surface of the extruded workpiece to facilitate curing the UV protective layer. By the process, the UV protective layer still keeps flexural tension and high adhesion in the extruding and transfer printing process, and high-curvature extruding and transfer printing without fragmentation can be performed.

Description

technical field [0001] The invention relates to a UV extrusion transfer molding process. Background technique [0002] The printing method that transfers the graphics and text on the intermediate carrier film to the substrate using the corresponding pressure is called transfer printing, and according to the different methods used, transfer printing can be divided into: thermal transfer printing, water transfer printing, air transfer printing , Holographic printing, screen transfer printing or low temperature transfer printing, etc. [0003] Among them, the characteristics of thermal transfer printing technology are: simple operation, less production process, high efficiency, good adhesion, high gloss, clear graphics, accurate color registration, bright colors, etc. After hot stamping, oil spraying and sandblasting can be carried out. Injection molding, bending punching and shearing and other post-processing, therefore, thermal transfer technology is already a very widely us...

AI Technical Summary

Problems solved by technology

[0008] The main technical problem to be solved by the present invention is to overcome the disadvantage that the existing UV protective layer transfer film is only suitable for workpieces with low curvature, and to provide a UV extrusion transfer molding process, which is a method for plastic extrusion or hair. The extruded transfer printing process of foam extruded products undergoes secondary drying and molding. The UV protective layer is formed on the transfer film through the secondary drying method, and the transfer printing film with UV protective layer is subjected to the extrusion transfer process to facilitate UV The protective layer can still maintain its flexural tension and good adhesion during the extrusion transfer process, allowing high-curvature extrusion transfer without cracking

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