Vacuum thermal transferring method and film paper

Abstract

The invention discloses a vacuum thermal transferring method which comprises the following steps of (1) spraying PU (polyurethane) white liquid paint on the bottom layer of a shell; (2) putting the shell into a drying box for drying; (3) spraying transparent PU white liquid paint on the bottom of the shell; (4) putting the shell into a drying box for drying; (5) meanwhile, printing a pattern on film paper; (6) covering the shell with the film paper printed with the pattern, putting the shell into thermal transferring equipment for transferring, and enabling the film paper to tightly wrap the shell under vacuum negative pressure; (7) heating air to preheat a lower die, after die assembling is executed, heating an upper die, and transferring the pattern on the film paper to the shell. According to the vacuum thermal transferring method, the film paper with the pattern covers the shell, and the shell is put into the thermal transferring equipment for transferring; the lower die is preheated at first, then die assembling is executed, and the upper die is heated at the temperature of 90-100 DEG C, so that the pattern on the film paper can well permeate to the shell, and thus the pattern is completely transferred onto the shell; the pattern on the shell is clear and vivid.

Description

technical field [0001] The invention relates to the field of printing, in particular to a vacuum thermal transfer printing method and film paper thereof. Background technique [0002] Thermal transfer printing is to design the pattern, make a copper plate, and then engrave the pattern on the copper plate in different colors through an electric engraving machine. Then take the copper plate to the printing machine to print the pattern on the PET film, and then transfer the pattern to the product through a thermal transfer machine. With the rapid development of high technology, thermal transfer technology and level have been further expanded and improved. Thermal transfer technology widely uses computers for image processing and design, and then prints images on paper (or film) through high-speed and high-quality inkjet printers. ), the process of plate making is omitted, and the sublimation ink can also be coated on the plastic film and cut into ribbons to be used in the prin...

AI Technical Summary

Problems solved by technology

However, the currently used vacuum heat transfer method still has the defects of incomplete pattern transfer and poor pattern fidelity.

Images