JP2001062390A - Patterned product and production of the same - Google Patents

Abstract

PROBLEM TO BE SOLVED: To improve the pollution resistance and the weathering resistance by forming a fluororesin layer on the surface of a product and forming a pattern with a fluoro-coating-material in the entire or part of the surface of the fluororesin layer. SOLUTION: A fluororesin layer 3 such as a thin film, a film, a sheet and the like is formed on the surface of a product 1, for example, a panel material of such as a stainless plate, an iron plate, an iron alloy plate, their galvanized plates, and their tin-plated plates, and the like, through an thermosetting resin- based adhesive 2 such as an urea resin type adhesive, a phenol resin type adhesive, and the like. A printed pattern layer 4 is formed on the entire or some parts of the surface of the fluororesin layer 3 using a normal temperature- curable fluoro coating material containing mainly fluorene, alkyl vinyl ether, a carboxylic acid vinyl ester type copolymer, a fluoroolefin and the like.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

The present invention relates to a patterned article and a method for producing the same. More specifically, stain resistance,
The present invention relates to an article having excellent weather resistance and the like, which is mainly used outdoors, in particular, an aesthetically pleasing article suitably used as a road material (ancillary equipment) and the like, and a method for producing the same.

Conventionally, contamination resistance of articles such as resin molded articles,
For the purpose of improving weather resistance, etc., it is widely practiced to provide a layer of a fluororesin film or the like on the surface of an article, and a pattern is also provided for the purpose of improving the aesthetic appearance of this surface. . However, the conventional pattern is
Acrylic resin paint, polyamide resin paint, vinyl chloride resin paint, vinylidene chloride resin paint, etc., which cannot fully utilize the contamination resistance of the fluorine resin layer and adhere to the fluorine resin layer Poor power and problematic durability.

[0003] Further, various panel materials have been proposed for the purpose of making roads sound absorbing (soundproofing or soundproofing) and cosmetics (viewing), as panel materials as articles coated with a fluorine-based resin layer as road materials. Has been put to practical use. For example, below or on the side of the underside of the girder of an elevated road structure, there is a sound absorbing panel that reflects the noise of vehicles passing under the structure on the back of the girder and prevents the noise from leaking to the surroundings, or the back of the girder. It is covered with a panel material such as a decorative panel for cosmetics. In addition, on a highway, various panel materials such as a sound absorbing panel as a soundproof wall for preventing noise of a passing vehicle from leaking to the surroundings and a decorative panel for beautifying a side surface of the girder are covered.

Conventionally, as the sound-absorbing panel mounted on the underside of the girder of the former elevated road structure, as shown in a partially cutaway perspective view in FIG. Panel d is suspended by a girder material c. The panel d is provided with a protrusion (louver) e protruding outward (downward) for the purpose of improving sound absorption, improving the overall view of the girder, and providing a gaze guidance effect.

However, a panel d having a projection e
Can be manufactured as (i) folded sheet steel from extruded material, or (i)
i) It is manufactured by a method of attaching the protrusion e to the flat plate at the construction site, but it is undeniable that any of these methods has disadvantages such as complicated manufacturing process, high cost, long construction time, etc. Further, in the case of the method (ii), since the weight of the projecting shape e is added to the panel d, there is a problem that it is necessary to increase the strength of the panel d itself or the mounting strength of the panel d.

[0006] Such a problem is caused by improving the sound absorbing property of the panel d. In order to improve the sound absorbing property of the panel d, it is most preferable to mount the projection e. In the case where the main purpose is to improve the eyesight and to exert the gaze guidance effect, the projection e
There is no need to attach.

[0007] Furthermore, resin-coated steel sheets are used for the sound-absorbing panel material and decorative panel material attached to the side of the latter highway, but polyvinyl chloride resin and polyvinylidene chloride are used as the resin for coating the steel sheet. Resins, polyolefin resins, polyamide resins, and the like have the problem that they are easily soiled and have poor stain resistance, and also have poor weather resistance. Attempts have been made to coat the surfaces of these resin-coated steel sheets with a fluorine-based resin layer in order to improve the stain resistance, weather resistance, etc. of these sound absorbing panel materials. However, part or all of the surface of the steel sheet covered with this fluororesin layer,
If you apply the pattern with other resin paint like the conventional pattern, you can not make full use of the stain resistance of the fluorine resin layer,
In addition, there was a problem in durability due to poor adhesion to the fluorine-based resin layer.

[0008]

In view of such circumstances, the present inventors have made intensive studies to provide a method for solving the above-mentioned drawbacks existing in the technical field of articles coated with a fluorine-based resin layer. Have reached the present invention.
The objects of the present invention are as follows. 1. An article covered with a fluororesin layer,
To provide articles with excellent stain resistance and weather resistance. 2. An article covered with a fluororesin layer,
Providing articles with excellent aesthetics. 3. To provide an article excellent in sound absorption (sound insulation or sound insulation). 4. Provided is a method for producing an article covered with the fluorine-based resin layer.

[0009]

In order to solve the above-mentioned problems, the present invention provides a fluorine resin layer on the surface of an article,
A patterned article is provided, wherein a pattern is formed on the whole or a part of the surface of the fluorine-based resin layer with a fluorine-based paint.

Further, in the present invention, when manufacturing a patterned article on the surface, a fluororesin layer is provided on the surface of the article, and the whole or a part of the fluororesin layer is heated at a temperature of 27%.
Provided is a method for producing a patterned article, characterized by applying a pattern to a room-temperature-curable fluorine-based paint having a viscosity at 0.05C of 0.05 to 0.30 Pa.S by a screen printing method.

[0011]

BEST MODE FOR CARRYING OUT THE INVENTION Hereinafter, the present invention will be described in detail.
The articles according to the present invention include any use such as electric parts, signboards, large billboards, road materials (accessory equipment) mainly used outdoors. These articles are films,
It is a molded article having an arbitrary shape such as a plate, a panel, a tube, a pipe, and the like. Examples of the material of these articles include arbitrary materials such as metal, slate, concrete, glass, ceramics, wood, resin, and paper. Among them, a preferred article is a metal panel.

When the preferred article is a metal panel, there is no particular limitation on the metal constituting the panel, for example, a stainless steel plate, an iron plate, an iron alloy plate, or a plate obtained by applying zinc plating, tin plating, chrome plating, or the like, An aluminum alloy plate and the like can be mentioned. The thickness of these metal plates is suitably selected in the range of 0.2 to 3.0 mm, and may be a resin-coated steel plate whose surface is previously coated with another resin. Examples of other types of resin for coating the steel sheet in advance include vinyl chloride resins, vinylidene chloride resins, polyolefins, and arbitrary resins such as polyamides, and the thickness is generally 0.02 to 0.50 mm. Range. When not covered with another resin in advance, it is preferable to wash and remove contaminants such as dust and grease on the surface of the metal plate, and apply a primer (undercoat) if necessary.

[0013] A fluorine resin layer is provided on the surface of an article such as a metal panel material. The fluorine-based resin layer improves the stain resistance, weather resistance, and the like of the surface of articles such as panel materials. Examples of the fluororesin laminated on the surface of the article include polytetrafluoroethylene, ethylene-tetrafluoroethylene copolymer, tetrafluoroethylene-hexafluoropropylene copolymer, and tetrafluoroethylene-perfluoroalkylvinyl ether copolymer , Polyvinylidene fluoride, vinyl fluoride polymer, chlorotrifluoroethylene polymer, ethylene-chlorotrifluoroethylene copolymer and the like.

The above-mentioned fluororesin layer may be a thin film, a film,
Sheets and the like are typical. The fluororesin resin layer can be formed by an extrusion molding method, a casting method, a calendar molding method, or the like. Among them, the extrusion molding method is preferable because a thin plate can be efficiently produced. The thickness of the fluorine-based resin layer can be generally selected in a range of 5 μm to 0.03 mm, and a film in a range of 20 μm to 50 μm is particularly preferable. Before processing the fluororesin into a layer,
Various resin additives can be blended with the fluororesin. Examples of the resin additive include colorants, heat stabilizers, ultraviolet absorbers, antioxidants, and the like.

In order to form a fluororesin layer on the surface of the article, it is preferable to interpose an adhesive between the surface of the article and the fluororesin layer. There is no particular limitation on the adhesives that can be used, and thermosetting resin adhesives such as urea resin adhesives, phenol resin adhesives, epoxy resin adhesives, polyurethane adhesives, etc .; polyvinyl acetate adhesives, Thermoplastic resin adhesives such as polyamide adhesives and acrylic resin adhesives; rubber adhesives such as silicone rubber adhesives, polyurethane rubber adhesives, SBR adhesives, NBR adhesives, and reactive acrylics Resin-based adhesives and the like can be mentioned. The adhesive is not limited to those exemplified above.

In the article according to the present invention, a pattern is formed on the whole or a part of the surface of the fluorine-based resin layer provided on the surface thereof with a fluorine-based paint. The pattern formed by the fluorine-based paint improves the aesthetics of the surface of the article, and can be used for a purpose of exhibiting a gaze guidance effect when the article is a panel material of a road material. Fluorine-based paints have excellent adhesion to fluorine-based resin layers and exhibit excellent durability.
As the fluorine-based paint, for example, a room temperature-curable fluorine-based paint can be used. Room temperature-curable fluorine-based paints are suitable because they cure at room temperature and are excellent in handling and workability. Further, it is preferable that the pattern is applied by printing in which a clear pattern appears.

Examples of the fluorine-based resin serving as a base of a room temperature-curable fluorine paint include fluoroolefins, alkyl vinyl ethers and carboxylic acid vinyl ester copolymers (JP-A-61-26167, JP-A-2-214).
No. 756), a silane compound having a hydrolyzable group such as tetraalkoxysilane was added to a copolymer with a monomer having a functional group such as a fluoroolefin, a hydroxyl group or a carboxyl group, and reacted. Silane-modified fluorinated copolymer (see JP-A-4-173888), copolymer of fluoroolefin, crotonaldehyde and / or alkenal with other copolymerizable monomers (JP-A-6-41490) Copolymers with hydroxy-containing monomers such as fluoroolefins and crotonic acid derivatives (see JP-A-8-269385);
Copolymer of fluoroolefin, (meth) acrylate monomer or vinyl ether monomer, and olefinic monomer having a hydrolyzable silyl group
0-147738), but are not limited to those exemplified.

In order to prepare a room temperature-curable fluorine-based coating composition from the above-mentioned fluorine-based resin, the fluorine-based resin is dispersed in water (see Japanese Patent Application Laid-Open No. 61-26167). A hydrazine compound is blended with the resin (JP-A-2-214756, JP-A-6-4149).
No. 0), dibutyltin laurate and polyvalent isocyanate are blended with a fluororesin dispersed in an organic solvent (JP-A-4-1738881, JP-A-8-269).
385, JP-A-10-147738)
Such a method may be used.

The above-mentioned fluorine-based coating composition contains a pigment. Pigments are appropriately selected and used for the purpose of improving the hardness, hiding power, and aesthetic appearance of the coating by coloring, improving adhesion to the fluororesin layer, chemical resistance, and weather resistance. Representative pigments include, for example, inorganic pigments such as titanium oxide, mica, clay, precipitated barium sulfate, silica powder, calcium carbonate, iron oxide, zinc oxide, aluminum powder, carbon, phthalocyanine blue, and quinacridone red. And the like. The pigments are not limited to those exemplified.

The fluorine-based coating composition may contain various other coating additives in addition to pigments. As other paint additives, for example, curing catalysts, dispersing aids,
Wetting agents, film forming aids, thickeners, thixotropic agents, ultraviolet absorbers, antioxidants, water repellents, antifreeze agents, antiseptic or antifungal agents, rust inhibitors , Defoamers, matting agents, surface conditioners and the like. The amount of these other additives is preferably selected within a range that does not adversely affect the physical properties of the coating film.

The fluorine-based coating composition is prepared by mixing the above-mentioned fluorine-based resin, pigment, and other coating additives in water or an organic solvent, and solids (heating residue) is 25 to 40% by weight, temperature is 27%.
The viscosity at 0 ° C is 0.05 to 0.3 Pa · S (measured value using a B-type viscometer), preferably 0.1 to 0.15
And printing by, for example, a screen (or silk screen) printing method. Viscosity is 0.05P
If it is smaller than a · S, “bleeding” occurs, in which the original color lacking the concealing property at the printed portion is not enough, and if the viscosity exceeds 0.3 Pa · S, the screen is clogged and printed on the printing surface. "Fading" occurs, and both are not preferred.

In the screen printing method, a screen woven in a mesh shape with a thread of silk, polyamide, polyester, stainless steel, or the like is stretched over a frame, and a portion through which the paint passes and a portion through which the paint does not pass are formed on the screen surface. In this method, the paint is extruded and printed. The screen is preferably 100 to 300 mesh, but is not limited to this range. According to this printing method, the plate making / printing method is simple, the number of facilities is small, and the printing surface is resilient, so that considerably complicated and precise printing is possible, and the printing paint layer is thick and the covering power is large. The color of the pattern becomes clear.

The screen printing is performed at normal temperature, and the drying of the pattern surface formed by the fluorine-based paint formed on the surface of the fluorine-based thin film is performed by using a dispersion medium such as water or an organic solvent for dispersing the solid content of the fluorine-based paint. It is preferably performed at a temperature of 20 ° C. or higher, although it depends on the type, combination, solid content ratio, and the like. Drying can be performed at room temperature for 5 minutes to 3 hours, and can be heated to a temperature of 30 ° C. or higher for the purpose of shortening the drying time. If the thickness of the layer of the pattern formed by the fluorine-based paint is less than 5 μm, the durability of the coating film tends to be insufficient, so that it is preferably 5 μm or more.

The pattern formed on the surface of the fluororesin layer is not particularly limited and can be variously changed depending on the type of the article. In the case where the article is a metal panel material used as a road material or the like, it is preferable to form a striped pattern in the longitudinal direction. Although these patterns are actually drawn two-dimensionally, due to the optical illusion, they appear as if they are protruding or concave from the surface of the panel material, and are visually recognized as three-dimensional. From that, the landscape is improved and the parallel line group pattern
A visual guidance effect can also be expected.

When the article according to the present invention is a panel material,
Depending on the case, many through-holes may be formed in the planar state, and the through-hole may be suitably used for applications requiring sound absorption (soundproofing or sound insulation). When a large number of through holes are formed in this way, the panel material exhibits excellent sound absorbing properties (sound insulation or sound insulation). The size of the hole to be drilled is selected in the range of 3 to 20 mm in diameter, and the hole drilling rate (the ratio of the total area of the hole to the area of the entire panel material) is 20.
It is preferable to select within the range of 70%. The holes may be formed in a regular pattern or may be formed arbitrarily. Further, the hole may be constituted by a hole group having one size and one or several kinds of hole groups having other sizes.

The articles according to the present invention are mainly used for outdoor electric parts, signboards, large advertising boards, indoor and outdoor wall surfaces of buildings, border fences of adjacent lands, road materials (incidental). Equipment), daily necessities and the like. These articles are films, plates, panels, tubes, pipes, and the like. Examples of the materials of these articles include metals, slate, concrete, glass, ceramics, wood, resin, and paper. Among them, a preferable article is a metal panel material.

A preferable metal panel material among the articles according to the present invention is a soundproofing (silence-reducing, sound-insulating) installed on the edge of a highway, between a roadway and a sidewalk, at a median strip of a roadway, or the like. ) Panels, sound-absorbing panels attached to the backside of girders to reduce noise on the underside of bridges and viaducts, bridges, girder backside decorative panels for concealing the backside of bridge girders for aesthetics, and cutting road noise Sound-absorbing panels installed on walls of excavated roads to reduce noise, sound-absorbing panels installed on walls of tunnels to reduce noise in tunnels, and tunnel interior panels installed on inner walls of tunnels to improve the visual environment It can be suitably used as other road auxiliary equipment.

[0028]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, a panel material used for road material as an article according to the present invention will be exemplified, and the present invention will be described in detail with reference to production examples. However, the present invention is not limited to the description example.

FIG. 1 is a partially cutaway perspective view of an example of a panel material used as a road material, and FIG. 2 is an example of a pattern formed on a surface of the panel material according to the present invention by a screen printing method. FIG. 3 is an enlarged plan view of a portion corresponding to the pattern III in FIG. 2 and FIGS. 4 and 5 are plan views.
FIG. 9 is a partial plan view of still another example of the pattern on the surface of the panel material.

In FIG. 1, reference numeral 1 denotes a metal plate, 2 denotes an adhesive layer, 3 denotes a fluororesin layer, and 4 denotes a pattern layer formed on the surface of the fluororesin layer by, for example, printing. Reference numeral 5 denotes a rust preventive paint layer formed on the back surface of the metal plate. In the panel material of this example, a plurality of through holes penetrating the panel material are not formed.

The printed pattern 6 exemplified in FIGS. 2 and 3 is a solid black printing portion 61 provided in a longitudinal direction with a predetermined width.
And a non-coated portion 62 arranged in parallel with it, a black solid printing portion 63, and a portion 64 that is visually recognized as gray by dots as a unit, is a stripe pattern obtained by repeating this, and 65 is a through hole. is there. Although the size of the through-hole 65 in this embodiment is the same in each part, the size may be appropriately changed in each part as described above.

The parallel line group pattern 7 illustrated in FIG. 4 is formed on the surface of the fluororesin layer 3 and is formed by alternately combining a fold curve 8 and a straight line 9 that bends in one direction into a trapezoidal shape. It is configured by being made continuous, and a trapezoidally concave portion and a trapezoidally projecting portion are arranged side by side and visually recognized as extending in the longitudinal direction.

The parallel line group pattern 10 illustrated in FIG. 5 is formed by continuously combining a bent curve 11 and a straight line 12 which are bent in one direction into a semicircular shape on the surface of the fluororesin layer 3. It is constituted by. This is a parallel line group pattern in which a plurality of bent curves 11 bent in a semicircular wave shape are drawn in parallel. The bent line 11 in the shape of a semicircular wave is actually drawn in a plane, but it looks like a folded line. The curve 11 projects in a semicircular shape, and the straight line 12 is visually recognized in a concave state.

The thickness of the lines constituting these patterns 6, 7, 10 is not particularly limited, and may be arbitrary.
A combination of lines having different thicknesses may be used. Also, a combination of colored lines of different colors may be used. Although the trapezoidal parallel line group pattern 7 is actually drawn in a plane, it is visually recognized that the folding curve 8 protrudes in a trapezoidal shape and the straight line 9 is concaved in the trapezoidal shape.

[Production Example] A width of 100 cm and a length of 215 cm
On one side of an aluminum alloy plate having a thickness of 1.0 mm, a layer of vinylidene fluoride resin having a thickness of 40 μm was provided via an acrylic resin adhesive. On the surface of this fluorine-based resin layer, a room temperature-curable fluorine-based resin paint (manufactured by NOF Corporation, trade name: Precolor No. 85, solid content is 37.5% by weight
(17.5% by weight of vinylidene fluoride resin, 7.5% by weight of acrylic resin, 12.5% by weight of pigment), and the remainder being 62.
5% by weight of an organic solvent has a viscosity of 0.11 at a temperature of 27 ° C.
The pattern shown in FIG. 2 and FIG. 3 was printed at room temperature using a 200-mesh screen at Pa · S｝, and the printed surface was allowed to dry at room temperature for 10 minutes. The thickness of the printed layer was about 7 μm, and the printed pattern was extremely clear. In a peel test in which a cellophane tape was attached to the printed layer, the printed pattern did not peel.

[0036]

The present invention has been described in detail above, and has the following particularly advantageous effects, and its industrial utility value is extremely large. 1. Since the surface of the article according to the present invention is covered with the fluororesin layer, the article is excellent in stain resistance, weather resistance, and the like. 2. The article according to the present invention is excellent in aesthetics because the entire surface or a part of the surface of the fluorine-based resin layer covering the surface of the article is provided with a pattern using the fluorine-based paint. 3. The article according to the present invention, since the pattern of the fluorine-based paint is formed on the entire or part of the surface of the fluorine-based resin layer covering the surface of the article, the surface of the fluorine-based resin layer and the pattern layer Excellent adhesion and excellent durability. 4. When the article according to the present invention is a resin-coated steel sheet,
It is excellent in workability and can improve stain resistance, weather resistance and aesthetic appearance.

5. When the article according to the present invention is a film, by coating any article with an adhesive or the like, it is possible to enhance the stain resistance, weather resistance, and appearance of the article covered with the film. 6. When the article according to the present invention is a panel material and a parallel line group pattern in which a plurality of stripes or bent lines are arranged in parallel with each other on the surface of the fluororesin layer, a line-of-sight guiding effect is obtained. It is suitable as a road material because it demonstrates. 7. When the article according to the present invention is a panel material and is provided with a plurality of through holes, it exhibits excellent sound absorbing properties (sound-proofing or sound-insulating properties), and has a pattern based on a fluorine-based paint. Combined with the hole pattern formed by the through holes, it provides an excellent aesthetic appearance. 8. According to the method of the present invention, since a pattern is printed using a fluorine-based paint having an optimum viscosity by a screen printing method, the printing method is simple, the number of facilities is small, and a printed surface with clear colors can be obtained. 9. According to the method of the present invention, since a room temperature-curable fluorine-based paint is used, post-treatment such as a drying step is simple.

[Brief description of the drawings]

FIG. 1 is a partially cutaway perspective view showing an example of a case where an article according to the present invention is a panel material used for a road material.

FIG. 2 is a partial plan view of an example of a pattern on a surface of a panel material.

FIG. 3 is a partially enlarged plan view of a pattern III in FIG. 2;

FIG. 4 is a partial plan view of another example of the pattern on the surface of the panel material.

FIG. 5 is a partial plan view of still another example of the pattern on the surface of the panel material.

FIG. 6 is a partially cutaway perspective view showing a state in which a panel is attached to the back surface of the girder of the elevated structure.

[Explanation of symbols]

 1: Metal plate 2: Adhesive layer 3: Fluorine-based resin layer 4: Printed pattern layer 5: Rust preventive paint layer 6: Printed pattern

 ──────────────────────────────────────────────────続 き Continued on the front page (72) Inventor Toru Hagiwara 731-1 Yida, Ryuocho, Gamo-gun, Shiga Prefecture Sekisui Jushi Co., Ltd.Shiga Ryuo Plant (72) Inventor Hiromitsu Matsuda Ryuocho, Gamo-gun, Shiga Prefecture 731-1 Yida Sekisui Jushi Corporation Shiga Ryuo Plant (72) Inventor Yasumasa Tokuhiro 5-8 Mitsuyacho, Nagahama-shi, Shiga Prefecture Mitsubishi Plastics Co., Ltd. Nagahama Plant F-term (reference) 4D075 AC45 AC99 AE05 CA32 CA34 CB11 DA06 DB02 DC05 EA05 EB16

Claims (8)

[Claims] 1. A patterned article wherein a fluorine-based resin layer is provided on the surface of the article, and a pattern is formed on the whole or part of the surface of the fluorine-based resin layer with a fluorine-based paint. 2. The patterned article according to claim 1, wherein the article is a resin-coated steel sheet. 3. A pattern provided by a fluorine-based paint,
The patterned article according to claim 1, wherein the article is a printed pattern provided by printing. 4. The patterned article according to claim 3, wherein the printed pattern is formed by a screen printing method. 5. The patterned article according to claim 1, wherein the article is a film. 6. The patterned article according to any one of claims 1 to 5, wherein the use of the article is a road material. 7. The patterned article according to claim 6, wherein a plurality of through holes are formed in the article. 8. When producing a patterned article on the surface, a fluororesin layer is provided on the surface of the article, and the whole or a part of the fluororesin layer has a viscosity at a temperature of 27.degree. A method for producing a patterned article, comprising applying a pattern to a room-temperature-curable fluorine-based paint having a pressure of 30 Pa · S by a screen printing method.