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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.

Inactive Publication Date: 2008-06-18
UBE NITTO KASEI CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] However, the method described in Patent Document 2 uses the sublimation transfer printing method to print from the antifouling layer side. Therefore, there are risks that the sublimation ink remains on the antifouling layer, which reduces the initial antifouling performance, or that the sublimation ink is not stable over time. seeping out, reducing the photocatalytic activity
[0008] In addition, in the formation of the antifouling layer, since it is set to be a porous layer, there are problems that it needs to be set to a low-temperature sol-gel method, and the printing method is also limited to the sublimation transfer printing method, etc., and there are technical limitations. , cannot be widely used in general printing
Since there are no surfaces that can circumvent all these contamination mechanisms, the current status quo is that the surface functionality to prevent contamination does not actually exist

Method used

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Examples

Experimental program
Comparison scheme
Effect test

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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Abstract

An antifouling printing sheet characterized by having a hydrophobic antifouling layer formed on one side of a transparent base sheet and a printing surface on the other side, a printed object having a printed antifouling printing sheet, a printed body. The antifouling printing sheet has a self-cleaning capability thanks to a photocatalyst activation action over a long period of time. A printed object and a printed body using the sheet are also provided.

Description

technical field [0001] The present invention relates to an antifouling printing sheet having self-cleaning property due to hydrophilic effect. Background technique [0002] The photocatalyst active material, which is one of the materials exhibiting hydrophilicity, has a surface purification effect caused by superhydrophilization, so it is expected to keep the surface of billboards and the like beautiful without maintenance, that is, the so-called "Anti-fouling effect". [0003] Among printed matter that is directly exposed to the air or displayed for a long period of time, a weather-resistant printed matter consisting of a laminated body at least sequentially laminated with a printed layer and an activity blocking agent containing an inorganic substance that blocks photoactivity is proposed. layer and a protective layer composed of a photoactive antifouling layer (see Patent Document 1). [0004] For this weather-resistant printed matter, even if pollutants caused by dust ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B32B27/00B32B27/36B41J2/01B41M5/00B41M5/50B41M5/52G09F7/00G09F15/02
Inventor 中曾根隆义仲山典宏田中真治田中尚树高见和之
Owner UBE NITTO KASEI CO LTD
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