Antifouling printing sheet
An anti-fouling, sheet technology, applied in printing, equipment, marking, etc., can solve the problems of non-existence of anti-pollution surface function, inability to be widely used, residual sublimation ink, etc.
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Embodiment 1
[0178] (Fabrication of thin film with photocatalyst layer)
[0179] (1) Film formation of active blocking layer
[0180] In a 1 L separable flask, 424.0 g of methyl isobutyl ketone, 200.0 g of methyl methacrylate, and 23.5 g of methacryloxypropyltrimethoxysilane were added under a nitrogen atmosphere, and the temperature was raised to 60°C. A methyl isobutyl ketone solution in which 1.9 g of azobisisobutyronitrile was dissolved was added dropwise to the mixed solution to initiate a polymerization reaction, followed by stirring for 30 hours to obtain an organic component solution (a).
[0181] To a solution obtained by dissolving 35.55 g of titanium tetraisopropoxide in 70.02 g of ethyl cellosolve, slowly add 5.94 g of 60% by mass nitric acid, 2.14 g of water, and ethyl cellosolve dropwise while stirring 27.39 g of the mixed solution was then stirred at 30° C. for 4 hours to obtain a mixed solution (b).
[0182] Then, using the above-mentioned mixed solution (b), ethyl cellos...
Embodiment 2
[0194] On the OHP sheet for color laser (Docu CentreColor f360 OHP sheet V516) of A4 size PET film substrate, the same composition as in Example 1 was used, and the active blocking layer and light The catalyst active layer is formed into a film to obtain an antifouling printed sheet.
[0195] The same arbitrary image as in Example 1 was printed on this printed sheet using a laser printer (trade name: DocuCentre Color f360) manufactured by Fuji Xerox Corporation.
[0196] The printed matter having the photocatalyst active layer was pasted on billboards on utility poles along the national highway in the same manner as in Example 1, and the adhesion state of pollutants and the change in pattern appearance were confirmed one year later. As a result, almost no contamination was adhered, the printed layer 9 was clear, and the design appearance was maintained.
Embodiment 3
[0198] On the opposite side of the ink-receiving layer of the ink-jet OHP sheet (manufactured by Sanwa Supply Co., JP-OHP10A) having an ink-receiving layer of the PET film substrate, a UV-absorbing coating agent (Nippon Catalyst Co., Ltd.) mixed with HALS was coated. Co., Ltd., UW Series UV-G301) 100 parts by mass and an isocyanate-based curing agent (Sumitomo Bayer Urethane Co., Ltd., Desmodur N3200) in a ratio of 12 parts by mass. In addition to providing an ultraviolet blocking film, an active blocking layer and a photocatalyst active layer having the same thickness as in Example 1 were formed into films to obtain an antifouling printed sheet. The printed matter having the photocatalyst active layer was pasted on billboards on utility poles along the national highway in the same manner as in Example 1, and the adhesion state of pollutants and the change in pattern appearance were confirmed one year later. As a result, almost no contamination was adhered, the printed layer 9...
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