Quality problems and solutions that are prone to occur in hot stamping production
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1. Hot stamping is not possible or hot stamping is not strong
The hot stamping is not possible or the hot stamping is not strong, that is, the electrochemical aluminum cannot be ideally transferred to the surface of the substrate or the anodized aluminum cannot adhere well to the substrate. The main reasons for the hot stamping or hot stamping are: low bronzing temperature; short bronzing time; insufficient bronzing pressure; base color ink containing paraffin; print base color ink is thick and smooth; print base color ink is too fast and crystal Chemical, aluminum alloy model is not suitable.
2. Hot stamping reverse phenomenon
The so-called reverse pulling means that after the hot stamping, the layer of the electro-aluminum foil is not firmly adhered to the bottom layer of the printed ink or the surface of the white paper, but some or all of the underlying ink layer is pulled away by the aluminum.
The main reason is that the underlying ink layer is not dry; the underlying ink layer uses too much white ink and is easy to be pulverized. Solution: control the amount of dry oil added; mix the lightening agent with white ink; the hot stamping part does not print ink.
3. Hot stamping text is easy to be distorted
The text of the figure is hairy, lacking pen and drawing, and the gloss is poor. The writing is hairy because of the low temperature; the lack of pen and broken painting is generally caused by the tension of the electric aluminum coil being too tight or the pressure is insufficient; the difference in gloss is due to the temperature being too high. Solution: Adjust the temperature to the appropriate temperature and pressure as appropriate, depending on the specific problem that arises.