JP2001225306A - Manufacture of irregular patterned concrete formed body - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a method for using a form having an irregular patterned inside face wherein deformation does not exist or is little when concrete is formed. SOLUTION: An irregular patterned sheet is formed on a sheet base body by forming and fixing many projected bodies comprising a cured body of synthetic resin coating by using an intaglio printing method. The irregular patterned sheet is arranged at least a part of the inside face of a concrete forming form. Concrete is allowed to flow into the form and solidified to manufacture a concrete formed body having an irregular pattern.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for manufacturing a concrete molded article having a concavo-convex pattern according to the present invention. More specifically, the present invention provides a method for placing concrete,
The present invention relates to a method for producing a concrete molded body having a concave-convex pattern, which can accurately apply a desired concave-convex pattern to the concrete molded body without causing deformation.

[0002]

2. Description of the Related Art Conventionally, concrete plate materials have been used as non-combustible materials or flame-retardant materials for forming wall surfaces and floor surfaces. By increasing the decorative effect by imparting a concavo-convex pattern to such a concrete plate, the field of application thereof is expanding. In order to give the concrete plate material an uneven pattern, when molding the concrete plate material in the formwork,
2. Description of the Related Art It has been performed to apply a concavo-convex inversion pattern to a concavo-convex pattern to be provided on a molding surface in a mold frame. Such a reversed pattern of the mold forming surface can be formed by engraving a required material on the mold forming surface forming material. However, in this method, the design is enlarged, a delicate pattern is formed, and the irregularities are formed. It is difficult to form a curved surface with

[0003] JP-A-50-150720 discloses that
A "method of applying a pattern to a concrete surface" is disclosed. In this method, a pattern-imparting surface of a concrete casting mold is formed by a synthetic resin by an embossing method using a metal plate, a roll, or the like, which is engraved in advance. There is disclosed a method of producing a concrete molded body having a concavo-convex inversion pattern of the concavo-convex pattern formed by forming a film with a concavo-convex pattern, pouring concrete into the formwork, and solidifying the concrete.

In the above embossing method, since the uneven pattern is engraved on the embossing roll, there is a problem in that the depth and height of the obtained unevenness are limited, and the uneven pattern lacks sharpness.

Further, since the above-mentioned uneven pattern of the synthetic resin film is formed by heating and pressing by the embossing method, the convex part on the front side of the synthetic resin film is a concave part on the back side, and The concave portion on the side is a convex portion on the back surface side. Therefore, when such a synthetic resin film with a concavo-convex pattern is arranged on the molding surface of the mold and concrete is poured, the convex portion of the synthetic resin film is pushed into the concave portion on the back side by the weight of the concrete. Since the height of the concave portion is reduced, the concave portion deforms the convex portion on the back surface side so as to reduce the depth of the concave portion, so that the first concave / convex pattern of the synthetic resin film is accurately formed on the concrete molded product. However, there is a problem in that it cannot be provided as an uneven inversion pattern, and the uneven pattern of the synthetic resin film is also deformed and cannot be used repeatedly.

Further, if the synthetic resin film is formed of a hard resin so that the unevenness of the synthetic resin film is not deformed by the weight of the poured concrete, a curved surface can be formed by such a hard resin film. The problem of becoming difficult arises.

[0007]

SUMMARY OF THE INVENTION The present invention relates to a method for producing a concrete molded body using a material for forming an inner surface of a formwork having a concavo-convex pattern, wherein the concavo-convex pattern has a high sharpness and depends on the weight of the poured concrete. A method for producing a concrete molded body with a concavo-convex pattern, which does not deform and, if necessary, the material for forming a mold inner surface having the concavo-convex pattern has high flexibility and can form a curved surface. It is assumed that.

[0008]

According to the present invention, there is provided a method for producing a concrete molded article having a concavo-convex pattern.
Forming a surface having a concavo-convex pattern on a portion, and in a method of manufacturing a concrete molded body using this formwork, a base made of a sheet material and printed on the surface of the base by intaglio printing using a synthetic resin paint. The uneven patterned surface is formed by using an uneven patterned sheet having a pattern composed of a number of protrusions fixed and fixed. In the method of the present invention, it is preferable that the base sheet material has flexibility. In the method of the present invention, it is preferable that the protrusions on the surface with the concavo-convex pattern have a hardness of 5 or more as measured by an analog hardness tester for soft rubber (C type). In the method of the present invention, it is preferable that the protrusions on the surface with the concavo-convex pattern have a height of 0.5 to 10 mm.

[0009]

BEST MODE FOR CARRYING OUT THE INVENTION In the method for producing a concrete molded body with a concavo-convex pattern according to the present invention, at least a part of the inner surface of the form has a surface having a concavo-convex pattern, and concrete is poured into the form and solidified. Thus, a concrete molded body having an uneven pattern is manufactured. The concavo-convex pattern on the inner surface of the mold has a relationship in which the concavo-convex pattern is inverted with respect to a desired concavo-convex pattern of the obtained molded article.

In the method of the present invention, in order to form the surface of the above-mentioned mold frame having the uneven pattern, a sheet with an uneven pattern is used. The sheet with a concavo-convex pattern is composed of a base made of a sheet material and a concavo-convex pattern made up of a large number of protrusions on the surface of the base, and the protrusions are formed by intaglio printing using a synthetic resin paint. Is printed on the surface of the.

In the method of the present invention, the step of forming a projection pattern on a sheet substrate by intaglio printing will be described with reference to FIG. FIG. 1 is an explanatory front cross-sectional view showing an example of an intaglio printing plate used in an intaglio printing step in the method of the present invention. A concave pattern 3 having a desired shape is engraved or printed on a printing surface portion of a substrate 2 of the printing plate 1. It is formed by etching or molding. In the concave pattern 3, the depth, width and shape of each concave portion 3a can be arbitrarily formed. In FIG. 2, the concave portion 3a of the intaglio printing plate 1 of FIG. 1 is filled with a synthetic resin paint 4 in accordance with the intaglio printing method.

In FIG. 3, a sheet substrate 5 is superimposed on the intaglio printing plate 1 filled with the paint 4 of FIG. 2 and pressed, so that the upper surface of the synthetic resin paint 4 filled in each recess 3 is placed on the sheet substrate. 5 is joined to the lower surface. When the sheet base 5 is peeled off from the intaglio printing plate, the molded body formed of the synthetic resin paint 4 is pulled out from the recess 3 while being joined to the lower surface of the sheet base 5, and the protrusion corresponding to the shape of the recess 3 is formed. As shown in FIG. 4, a sheet 6 having a concavo-convex pattern having a large number of protrusions 4a and concave portions 6a therebetween is obtained.

In the printing step, the synthetic resin paint 4
May be filled in each concave portion 3a of the intaglio printing plate 1 and cured in the filled state, then joined to the sheet material 5 and peeled off from the printing plate 1, or after filling, the sheet material and It may be joined, then cured and peeled off from the printing plate 1, or it may be filled, joined to a sheet material, peeled off from the intaglio printing plate, and then formed into a protruding synthetic resin. The paint may be cured. In any method, the cured protruding paint is molded into a desired shape and dimensions, and has sufficient mechanical strength for concrete molding, and can impart a desired uneven pattern to the concrete molded body. Must be something.

In order to satisfy such requirements, the synthetic resin paint filled in the intaglio printing plate recess 3a is made of acrylic resin, ethylene-vinyl acetate copolymer, phenolic resin, urea resin, melamine resin, epoxy resin or the like. Resin, polyester resin, polyurethane resin, ethylene-butylene copolymer, maleic acid resin, alkyd resin, petroleum resin, polyamide resin, silicone resin, etc. The additives include, for example, coloring materials and pigments (for example, synthetic resins such as cellulose derivatives, acrylic resins, polyester resins, and polyurethane resins) as the constituent materials of the vehicle, and the coloring pigment, extender pigment, and plasticizer in the vehicle. Reinforced materials such as resin or carbon fiber Iba, mold release agents, plasticizers, stabilizers and solvents may contain like.

[0015] The sheet substrate used in the method of the present invention may be rigid or a flexible material. When a sheet substrate made of a flexible material is used, the obtained sheet with a concavo-convex pattern has flexibility, so that it can be formed into a desired curved surface, for example, as shown in FIG. The rigid sheet base is formed of at least one selected from resin materials such as FRP and synthetic resin plates, metal materials such as aluminum, copper and iron, and materials such as plywood and cardboard, and has a thickness of 0.1 mm. 1-5mm
It is preferred that

The flexible sheet substrate is made of a cloth (woven fabric, knit,
Non-woven fabric), surface-coated with flexible resin,
Alternatively, a sheet made of a flexible resin or a flexible metal is used, and the thickness thereof is preferably 0.1 to 5 mm. There is no particular limitation on the type of fiber for fabric, but generally, one or more types of natural fiber and artificial fiber (polyolefin-based fiber, polyamide-based fiber, polyacrylonitrile-based fiber, and polyester-based fiber) may be used. preferable. Flexible resin materials include cellophane, acetate, polyvinyl chloride, polyethylene, polypropylene, polyester, polystyrene, polycarbonate,
It is preferable to use at least one of polyvinyl alcohol, polyamide, and polyvinylidene chloride. As the flexible metal material, a metal sheet such as aluminum or a net can be used.

It is preferable to use the adhesiveness of the synthetic resin paint itself for the adhesion between the projecting body made of the synthetic resin paint and the sheet substrate. However, if necessary, an adhesive may be used.
Or, at the joint surface between the synthetic resin paint and the sheet base,
Melt bonding by at least one of them may be used.

The projections made of the cured body of the synthetic resin paint are:
During concrete molding, it is important that the concrete is not deformed by the pressure of the concrete poured into the mold or that the amount of deformation is small, and when the sheet base is deformed into a curved surface, the projections also correspond to this deformation. It is also important to be able to deform as appropriate, and for this purpose, the cured protrusion of the synthetic resin paint should be made of an analog hardness meter (C type) for soft rubber (for example, trademark: Asker C, Kobunshi Keiki Co., Ltd.) The hardness is preferably 5 or more, more preferably 10 to 80, as measured by using. General hardness of hard urethane about 8
It is preferably lower than 0 (soft).

In the sheet with a concavo-convex pattern used in the method of the present invention, the height of the projections 4a formed on the sheet is
It is preferably in the range of 0.5 to 10 mm, more preferably 1 to 5 mm.

In the method of the present invention, a sheet with a concavo-convex pattern is attached to a required portion on the inner surface of a mold, for example, a side surface or a bottom surface to form a mold for a concrete molded body with a concavo-convex pattern. Is shown on the bottom of the formwork, a part of the formwork is shown. In FIG.
Has a bottom surface portion 8 and four side surface portions 9, and a sheet 6 with a concavo-convex pattern is adhered and fixed on the inner surface of the bottom surface portion 8. When concrete is poured into the mold frame 7 and solidified and then separated from the mold frame, a pattern in which the concavities and convexities are inverted with respect to the concavo-convex pattern sheet 6 is formed on one surface of the concrete molded body. Since the projections 4a of the sheet 6 with concavo-convex pattern used in the method of the present invention are not deformed due to the pressure of the poured concrete or are small, the concrete having the concavo-convex inverted pattern using this formwork is accurate. The molded article can be repeatedly manufactured.

In the production of the concrete molded body,
A release agent may be mixed in the concrete, and / or a release agent may be applied to the inner surface of the mold. Further, the bottom surface portion and the four side surface portions of the mold may be assembled, disassembled and removed.

[0022]

According to the method of the present invention, it is possible to efficiently and accurately produce a concrete molded body having an accurate desired uneven pattern.

[Brief description of the drawings]

FIG. 1 is an explanatory front sectional view showing an example of an intaglio printing plate used in the method of the present invention.

FIG. 2 is an explanatory front sectional view showing a state in which a concave portion of the intaglio printing plate of FIG. 1 is filled with a synthetic resin paint.

FIG. 3 is an explanatory front sectional view showing a state in which a sheet base is joined to a paint filled in the intaglio printing plate of FIG. 2;

FIG. 4 is an explanatory cross-sectional view of a sheet with a concavo-convex pattern peeled off from the intaglio printing plate of FIG. 3;

FIG. 5 is an explanatory sectional view showing a curved state of the sheet with a concavo-convex pattern of FIG. 4;

FIG. 6 is an explanatory front sectional view showing an example of a mold for producing a concrete molded body used in the method of the present invention, in which the sheet with the concavo-convex pattern of FIG. 3 is fixed to the inner surface of the bottom surface.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 ... Intaglio printing plate 2 ... Printing plate board 3 ... Concave pattern 3a ... Concave part 4 ... Synthetic resin paint 4a ... Synthetic resin paint protrusion 5 ... Sheet base 6 ... Concave pattern sheet 6a ... Concave 7 ... Mold frame 8 ... Bottom part 9 ... Four sides

Continued on the front page F term (reference) 4G053 AA11 AA15 AA19 BB11 BB13 BB17 CA02 CA16 CA20 CA21 CA24 DA03 EA03 EA26 EA33 EB05

Claims (4)

[Claims] 1. A method of forming a surface having a concavo-convex pattern on at least a portion of an inner surface of a mold, and casting concrete in the mold, comprising: a base made of a sheet material; A pattern consisting of a number of protrusions printed and cured and fixed by intaglio printing using paint,
The method for producing a concrete molded body with a concavo-convex pattern, comprising forming the surface with a concavo-convex pattern using a sheet with a concavo-convex pattern having the following. 2. The method according to claim 1, wherein the base sheet material is flexible. 3. The method according to claim 1, wherein the protrusions on the textured surface have a hardness of 5 or more as measured by an analog hardness tester for soft rubber (C type). 4. The protrusion on the surface with a concavo-convex pattern is 0.5
The method according to claim 1 or 3, wherein the method has a height of 10 to 10 mm.