Method for manufacturing decorating plate for flooring
A manufacturing method and technology for flooring materials, which are applied in chemical instruments and methods, lamination devices, building structures, etc., can solve problems such as disappearance of embossed patterns on the surface of decorative sheets, and achieve the effect of good characteristics
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reference example 1
[0110] Reference example 1, embodiment 1~3 and comparative example 1~4
[0111] (Manufacturing of decorative sheets for flooring materials)
[0112] A patterned layer (2 μm) was formed by printing on a 0.06 mm thick colored polypropylene (substrate sheet). Then, a 0.08 mm-thick transparent polypropylene-based resin film (transparent resin layer) was adhered to the patterned layer using a polyurethane-based dry lamination adhesive. However, the thickness of the transparent adhesive layer was 3 μm. Next, an electron beam-curable transparent surface protection layer (15 μm) was formed on the transparent resin layer. Next, embossing was performed from the side of the transparent surface protective layer to produce an intermediate sheet. In the embossing process, a wood grain conduit pattern with a depth of about 30 μm is obtained. Finally, a polyurethane-based adhesive was applied to the back of the intermediate sheet, and a transparent polypropylene-based resin layer (synth...
Embodiment 4～6 and comparative example 10～11
[0151] Except that the thickness of the backing layer was fixed at 80 μm, and the thickness of the transparent resin layer was the thickness shown in the following Table 3, it carried out similarly to the comparative example 1, and produced the decorative material for floors. In addition, embossing state, DuPont impact property, caster resistance, pencil hardness and Clemens scratch property were evaluated by the same method as above. The evaluation results are also listed in Table 3.
[0152] table 3
[0153]
[0154] (investigation)
[0155] As can be seen from Table 3, when the thickness of the synthetic resin liner layer is constant, the greater the thickness of the transparent resin layer, the better the scratch resistance. In addition, the present inventors consider that the total thickness of the decorative sheet is a major factor in the impact test characteristics, and that the required characteristics are satisfied when the total thickness is 300 μm or more.
Embodiment 7～11 and comparative example 12
[0157] Except that the thickness of the transparent resin layer was fixed at 150 μm, and the thickness of the synthetic resin layer was the thickness shown in the following Table 4, it carried out similarly to Example 4, and produced the decorative material for floors. In addition, embossing state, DuPont impact property, caster resistance, pencil hardness and Clemens scratch property were evaluated by the same method as above. The evaluation results are also listed in Table 4.
[0158] Table 4
[0159]
[0160] (investigation)
[0161] As can be seen from Table 4, when the thickness of the liner layer made of synthetic resin is 60 μm, the impact characteristics and caster resistance are not sufficient.
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