JP2008266795A - Method for producing flag, and flag - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a method for producing a flag whose image quality is maintained and to which a photocatalyst is adhered, and to provide the flag. <P>SOLUTION: This method is used for producing a flag in which a photocatalyst is adhered to a white cloth portion of the flag in its desired design, and the flag is obtained by the production method. Therein, titanium dioxide is used as the photocatalyst, and a silk screen printing method is used as the production method for adhering the photocatalyst. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

    The present invention relates to a flag manufacturing method and a flag.

    In recent years, a technology for imparting functions such as antifouling properties, deodorizing properties, antibacterial properties, antifungal properties, and nitrogen oxide removal properties using oxidation / reduction reactions of photocatalysts typified by titanium dioxide has been proposed. ing. Also in the field of flags, attempts have been made to secure the effect of the photocatalyst by fixing the photocatalyst to the flag.

For example, Patent Document 1 discloses a banner with a photocatalyst attached thereto. Patent Document 2 discloses an advertising flag as an example of a photocatalytic functional product. Patent Document 3 discloses that a glass film layer having a photocatalytic effect is formed on the front surface or front and back surfaces of a flag. Patent Document 4 discloses a banner having a photocatalyst on one side. Non-Patent Document 1 describes a photocatalyst. Thus, various flags having a photocatalytic function have been proposed.
JP 2001-149448 A paragraph 0010 JP 2002-370026 A paragraphs 0017, 0020 JP 2004-252393 A paragraph 0013 Japanese Patent Laid-Open No. 10-290020 FIG. SME Development Infrastructure Organization, “New Cooperation Support Shikoku Strategy Conference”, [omline], [Search March 6, 2007], Internet <URL: http://www.smrj.go.jp/shin renkei / renraku /shikoku/nintei/anken6/01533.html>

      However, it is problematic in terms of quality to apply the conventional technique as described above to a flag as it is. The color paste used for flag printing is created by mixing a binder, which is a fixing agent for adhering a color to the fabric cloth surface, and a liquid pigment, which is a pigment component. For example, consider adding photocatalyst powder to the color paste. For example, when titanium oxide powder is used as the photocatalyst powder, the powder is white. When such white powder is added to the color paste and printed, the color itself is whitish and pastel, and the surface that is the advertising surface does not exhibit the desired color. With the recent development of image processing technology, the demand for the color quality of the printed surface is increasing, and it is difficult to put a flag with a photocatalyst to practical use unless the quality problem is overcome.

      Therefore, an object of the present invention is to provide a flag manufacturing method and a flag in which image quality is maintained and a photocatalyst is fixed.

    In order to solve the above problems, the present invention is characterized in that a photocatalyst is fixed to a white background portion when printing a desired design on a fiber cloth fabric.

    In one embodiment, titanium oxide may be used as the photocatalyst used for the white background portion.

    In one embodiment, the photocatalyst may be fixed by silk screen printing.

    According to the present invention, since the photocatalyst adheres to the white background portion, it is possible to manufacture a flag that maintains the image quality.

    For example, by providing a flag printed on the sales store of an automobile manufacturer, it is possible to appeal to consumers not only the advertising of products but also the high environmental awareness of the automobile manufacturer. It is also possible to appeal to citizens by using the flag for environmental awareness projects such as administrative services.

    The flag according to the embodiment of the present invention is characterized in that a photocatalyst is fixed to a white background portion when a desired design is printed on one side of a fiber cloth fabric.

  Here, the flag is a promotional flag, banner, banner, company flag, school flag, championship flag, national flag, party flag, team flag, labor flag, hand flag, cheer flag, signal flag, safety flag, safety Sanitary flag, ship flag, devout flag, shrine flag, gate curtain, float curtain, crest curtain, mud curtain, cheer curtain, water curtain, stage curtain, bonfire, see-off curtain, shrine fence, sumo wharf, samurai fence, samurai, It refers to all flags such as Momotaro, Back, Actor (Kabuki), Tapestry, Banner.

    The fiber cloth fabric is a cloth fabric woven with fibers. Examples of the fiber cloth cloth include a cloth cloth woven with chemical fibers and a cloth cloth woven with natural fibers. As cloth fabrics woven with chemical fibers, fabrics called Ponzi and Tropical are often used in promotional banners. Ponzi refers to a fabric in which warp and weft yarns are each woven at 75 denier. Tropical refers to a woven fabric in which warp and weft yarns are each woven at 150 denier. In addition, the fiber cloth fabric used in the present invention is not limited to a synthetic fabric, a natural fabric, a pongy or a tropical fabric.

    A photocatalyst is a particle that exhibits a photocatalytic function when irradiated with light having a wavelength greater than its bandgap, and is known in the art such as titanium oxide (TiO2), zinc oxide (ZnO), and strontium titanate (SrTiO3). One or more metal compound semiconductors can be used. In particular, titanium oxide having an excellent photocatalytic function, chemically stable and harmless is preferable. Titanium oxide includes, in addition to titanium oxide, those generally called hydrous titanium oxide, hydrated titanium oxide, orthotitanic acid, metatitanic acid, and hydroxytitanic acid. The crystal form is not limited, but anatase type is preferred.

    The surface on which the desired design is printed may be either side of the fiber cloth fabric. Silk screen printing is used in the process of printing a desired design. The main printing methods include gravure printing using intaglio, offset printing using flat plate, relief printing using letterpress, screen printing using stencil and the like. In silk-screen printing used in the present invention, a fiber cloth fabric, which is a printed matter, is placed under the plate using a plate called an stencil through which an image portion passes. Color glue is put on one end of the screen plate, and the squeegee is moved back and forth to extrude the color glue under the ridge of the screen for printing.

    Here, the screen plate making method will be described. First, a stencil is put on the plate frame and the emulsion is coated. A document (transparent positive type) is pasted, exposed with a mercury lamp, and then developed. The portion that is not exposed by washing with water becomes a stencil and becomes a transfer portion of the color paste. Recently, the design original is not a transparent positive, but a direct plate making method using an ink jet printer is also used.

    There are wood, aluminum, stainless steel, plastic, etc. for the screen frame, but the aluminum material is overwhelmingly large considering the processing method, light weight and cost.

    There are silk, nylon, tetron, and stainless steel as the material for the cocoons, but Tetron cocoons are used relatively frequently. Screen printing is still called silk screen because it was used as the most suitable thread material before the emergence of thread materials such as nylon, tetron, and stainless steel. Remains.

    When the photocatalyst is fixed to the white background portion by silk screen printing, there is a method of first printing the color paste and finally fixing the photocatalyst, or a method of fixing the photocatalyst first and then printing the color paste. In either case, the photocatalyst can be secured to the flag. More preferably, as a sequence of silk screen printing, the photocatalyst is fixed to the white background portion by silk screen printing last. When fixing by silk screen printing using a photocatalyst is first performed, a phenomenon occurs in which the wrinkles stretched on the plate take away the photocatalyst from the cloth when printing the color portion in the subsequent process. Then, the photocatalytic performance may be reduced due to a decrease in the amount of photocatalyst adhered.

    Examples of the method for fixing the photocatalyst include the following methods. Add chelating dispersant to water, stir and dissolve. Next, the photocatalyst particles are gradually added while stirring the obtained solution to uniformly disperse the photocatalyst particles. Thereafter, ultrasonic vibration is applied while stirring to prepare a paste liquid. A binder resin is added to the paste solution and mixed. Thereafter, the viscosity is adjusted using an acrylic thickener to obtain a blended solution. The said liquid mixture is printed on a white background part using silk screen printing, and preliminary drying is performed. Further, baking (heating) is performed to fix the photocatalyst to the white background portion of the fiber cloth fabric.

  Examples of the present invention are shown below, but the present invention is not limited to these Examples.

Example 1
As the fiber cloth fabric, a pongy in which warp and weft are woven at 75 denier is used. A blending solution for fixing the photocatalyst to the white background portion of the desired design is prepared. The blending solution was prepared as follows. To 150 parts by weight of water, 15 parts by weight of a chelate dispersant is added, stirred and dissolved. Next, while stirring the resulting solution, 20 parts by weight of photocatalytic titanium oxide (Ishihara Sangyo Co., Ltd .: ST-30L) is gradually added to uniformly disperse the photocatalytic particles. Thereafter, ultrasonic vibration is applied while stirring to prepare a paste liquid. To the paste solution, 85 parts by weight of water and 125 parts by weight of an acrylate copolymer resin (Dainippon Ink Chemical Co., Ltd .: F-15) as a binder resin are added and mixed. Then, using an acrylic thickener, the viscosity is adjusted to 8000 to 10,000 CPS (20 ° C.) to obtain a blended solution. The blended solution is printed on a 120 g / m @ 2 (Wet) fiber cloth using a silk screen and pre-dried at 105 DEG C. for 5 minutes. Further, baking (heating) was performed at 150 ° C. for 3 minutes, and the photocatalyst was fixed to the white background portion of the fiber cloth fabric to obtain the flag according to Example 1.

(Comparative Example 1)
2 parts by weight of Liquid Pigment Pink (manufactured by Dainippon Ink & Chemicals, Inc .: R / W Brilliant Pink FFB) was added to and mixed with 100 parts by weight of the blended liquid of Example 1. The blended solution is printed on a 120 g / m @ 2 (Wet) fiber cloth using a silk screen and pre-dried at 105 DEG C. for 5 minutes. Further, baking (heating) was performed at 150 ° C. for 3 minutes, and the photocatalyst was fixed to the fiber cloth fabric to obtain a sample according to Comparative Example 1.

(Comparative Example 2)
10 parts by weight of a liquid pigment (Dainippon Ink Chemical Co., Ltd .: R / W Red GRX) was added to and mixed with 100 parts by weight of the blended liquid of Example 1. Other than that is the same as Comparative Example 1.

(Comparative Example 3)
1 part by weight of liquid pigment blue (manufactured by Dainippon Ink & Chemicals, Inc .: Dexcel Blue HG / C) was added to and mixed with 100 parts by weight of the blended liquid of Example 1. Other than that is the same as Comparative Example 1.

  The colors of Comparative Example 1 and Comparative Examples 2 and 3 were visually confirmed. In any of the main colors, pink, red, and blue, when the liquid pigment was added to the mixture of Example 1, the color became pastel. It turned out to be difficult to produce a quality equivalent to that of conventional colors not containing a photocatalyst. Therefore, in order to produce a flag carrying a photocatalyst while maintaining the same color as a conventional flag, it was confirmed that fixing the photocatalyst on a white background as in Example 1 was effective.

  Although the present invention has been described in detail above, the above description is merely illustrative of the present invention in all respects and is not intended to limit the scope thereof. It goes without saying that various improvements and modifications can be made without departing from the scope of the present invention.

The flag manufacturing method according to the present invention is useful in the field of manufacturing various flags carrying a photocatalyst without degrading a desired design quality. In addition, it can be said that the flag can appeal not only as an advertising means but also as an environmental contribution company. It is also an effective means for administrative organizations to raise environmental awareness and provide environmental education to citizens.

Claims (6)

  A method for producing a flag, characterized in that when a desired design is printed on one side of a fiber cloth fabric, a photocatalyst is fixed to a white background portion.   The method for producing a flag according to claim 1, wherein the photocatalyst is titanium oxide.   The method for manufacturing a flag according to claim 1, wherein the photocatalyst is fixed by silk screen printing. A flag in which a desired design is printed on one side of a fiber cloth fabric, and a white background portion of the desired design is a flag to which a photocatalyst is fixed.   The flag according to claim 4, wherein the photocatalyst is titanium oxide. The flag according to claim 4, wherein the photocatalyst is fixed by silk screen printing.