Working principle of PVC card laminator
PVC card press the working principle is as follows:
Through physical and chemical action, multi-layer objects are bonded together to form an organic whole. For example: laminated plywood, sawdust board, PVC card body, paper card body, etc. The electric heat conduction or oil conduction heating method of the hot pressing unit of the laminating equipment is adopted. The upper and lower two pieces of heated (pressurized) iron plates pass through the upper and lower pads of the tray to transfer temperature and pressure from the surface to the inside to the laminated PVC sheet and fabric. Because the liner steel plate, PVC sheet and fabric are gradually subject to the temperature and the foam of the multi-layer clamp, the temperature and pressure are different at different time distribution points: when the PVC sheet, facial mask When the varnish and ink layer reach the softening point of the material, a certain degree of infiltration and melting will occur between them. In addition, the effect of the adhesive of the water base pressure oil will make them bond. At this time, the correct hot pressing setting time should terminate the hot pressing; Take it out and turn it to the cold pressing unit; After being heated and pressured, the clamp body with certain adhesion is transferred to the cold pressing unit, while continuing to pressurize (the pressure must be 1-2Mpa higher than the hot pressure), circulating water is used to cool down, so as to achieve the purpose of curing and shaping the pressed clamp body.
Purpose and function of PVC card lamination:
1. The card body of the multi-layer structure is bonded as a whole;
2. The coated facial mask and the coated varnish layer are adhered together with the sheet to protect the front and back sides of the card body from printing images and texts;
3. The surface of the card body is treated with bright, matte and semi matte effects to make the printed pictures and texts on the card body more clear, bright, bright and beautiful.
4. It makes the surface of the card body smooth and smooth, and has the performance of scratch resistance, no delamination, no film peeling, and durability.
More technical information: http://www.szvstar.cn