Decorative sheet for floor material and production method thereof
A technology for flooring materials and manufacturing methods, used in decorative arts, special decorative structures, chemical instruments and methods, etc., can solve the problems of insufficient adhesion, time-consuming, and prolong the time of production processes, and achieve sufficient adhesion strength. Effect
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[0107] (Manufacturing of decorative sheets for flooring)
[0108] Colored polypropylene (base material sheet) having a thickness of 0.06 mm was prepared in advance. A patterned layer (2 μm) was formed on the base sheet by printing. Next, a 0.08 mm-thick transparent polypropylene-based resin film (transparent resin layer) was bonded to the patterned layer using a polyurethane-based dry lamination adhesive. The thickness of the transparent adhesive layer was 3 μm. Then, an electron beam-curable transparent surface protection layer (15 μm) was formed on the transparent resin layer. Then, embossing was performed from the side of the transparent surface protective layer to prepare a decorative sheet intermediate. In the embossing process, a wood grain conduit pattern with a depth of about 30 μm is obtained.
[0109] Finally, a film is formed by co-extruding molten resin (2 types and 3 layers) at 260°C to obtain a backing layer, on which the base sheet side of the decorative she...
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