JPH07329036A - Section and shaped article - Google Patents

Abstract

PURPOSE:To form an optional irregular pattern at a low cost by a method wherein foamed synthetic resin is carved, the carved face is thermally fused and/or thermally softened by heating without bringing a heating device in contact with the carved face, and the face is smoothened so that a cured raw material is not stuck thereto. CONSTITUTION:Foamed polyethylene 1 is carved with a cutting tool or the like to make a shape 1' wherein a rubble stone paved pattern is formed. A carved face is pressed by making a dye 7 abut against the carved face. The carved face is thermally softened, and rough texture is removed to make a shape 8 wherein a smooth face 2' is formed. Ready-mixed concrete is placed by using the shape 8 as a shuttering. After the ready-mixed concrete is cured, it is released from the shape 8 to obtain a concrete shaped article wherein the rubble stone paved pattern is formed on the face. The shape 8 is excellent in releasing and can be repetitively used. The foamed polyethylene is not stuck to the concrete shaped article, and the face of the shape is certainly transferred to the concrete shaped article.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a reusable shape member and a molded article such as concrete made by using this shape member as a frame.

[0002]

2. Description of the Related Art Plywood and steel plates are used for concrete formwork. Recently, in order to show patterns and patterns such as people, animals, and landscapes on the surface of concrete, it is possible to place ready-mixed concrete by using a formwork with a concavo-convex pattern such as a pile of natural stones. Has been done. Since this technique forms an uneven pattern using a mold without engraving concrete, it is possible to make a concrete shaped object at a lower cost than engraving hardened concrete.

As a mold and a profile for forming the above-mentioned concavo-convex pattern, there are known an FRP mold provided with the concavo-convex pattern and a styrofoam profile provided with the concavo-convex pattern. However, a female mold is required to make these molds and shapes, and since the female mold is expensive, unless a large amount of molds and shapes with the same uneven pattern are produced, the cost becomes high and the single pattern Since only a concavo-convex pattern can be formed, it is not suitable for forming a concavo-convex pattern of any shape, and the FRP mold is also expensive.

As a shape member capable of forming a desired uneven pattern at will, there is known a shape member obtained by scraping styrofoam with a steel wire brush and further finishing with paper.
When this shape material is pasted on the inside of a plywood form, etc., a hardening raw material such as ready-mixed concrete is placed, and after hardening, demolding,
It is possible to obtain a shaped article having a desired uneven pattern, and this method has been widely used recently. However, raw concrete enters the voids of the styrofoam and gaps between the foam particles, etc., and the styrofoam adheres to the concrete during demolding, and the surface of the profile cannot be reliably transferred to the surface of concrete, etc. , The adhered Styrofoam must be melted and removed with a gas burner, etc.
Since the surface of the shape member is damaged and can be used only once, there is a problem in that it is difficult to dispose of the Styrofoam shape member after demolding.

[0005]

DISCLOSURE OF THE INVENTION The present invention solves the above problems, can form an arbitrary uneven pattern at low cost, can be repeatedly used, and can reliably transfer the surface of a profile to concrete or the like. It is an object of the present invention to provide a material and a shaped article such as concrete made by using the material.

[0006]

The shape forming material of the first invention of the present invention is obtained by engraving a foamed synthetic resin and heating it without touching the engraved surface with a heating tool to heat-melt it. And / or is heat-softened to smooth the surface so that the curing raw material does not adhere. The above-mentioned shape is engraved with a steel wire brush, paper, abrasive, or vibration cutting tool, etc., and heats the engraved surface that has been rubbed by breaking air bubbles, and heat-melted and / or heat-softened the engraved surface Since it eliminates and smoothes, it does not stick even when setting a hardening material such as fresh concrete or a solidifying material such as clay, and it is well released and the surface of the profile is reliably transferred to the surface of concrete. You can
Moreover, it can be used repeatedly.

The modeling material of the second invention of this invention is
It is characterized in that a heated mold is applied to the foamed synthetic resin to heat and soften it to create patterns and designs. The above-mentioned shape material can form a desired uneven pattern on the synthetic resin foamed by a heated pressing mold at will, and even if the foamed synthetic resin is cut and roughened, the foamed synthetic resin By heat softening and pressing action of the resin, it is possible to prevent roughening of the pressing surface and prevent adhesion of raw concrete, etc., and reliably transfer the surface of the profile to the surface of concrete etc. it can. Also, when forming a shape, even if pressed with a pressing die, if the foamed synthetic resin is heated to a temperature below the melting point and heat-softened without melting the foamed synthetic resin, the synthetic resin foamed in the pressing die will melt. I don't wear it.

The modeling material of the third invention of this invention is
It is characterized in that a foamed synthetic resin is engraved, a heated die is applied to the engraved surface to heat-soften it, and the surface is smoothed. The above shape is engraved with a steel wire brush, paper, abrasive, or vibration cutting tool,
The engraved surface that has become rough due to air bubbles is applied with a heated pressing mold to soften it and eliminates the smoothness of the engraved surface, making it smooth even when pouring fresh concrete. In addition, the surface of the profile can be reliably transferred to the surface of concrete or the like, and can be repeatedly used.

The molded article of the fourth invention of the present invention is
A third aspect of the present invention is characterized in that a heat-softened and / or heat-melted surface of the profile is cast with a hardening or solidifying raw material, and the raw material is hardened or solidified and then demolded. In the above-mentioned shaped article, since fresh concrete or the like does not adhere to the profile, the surface of the profile is reliably transferred to the surface of concrete or the like.

[0010]

【Example】

Example 1 The foamed polyethylene 1 shown in FIG. 1 was engraved with a cutting tool (not shown) to form a cobblestone pattern 1'as shown in FIG. 2, and a gas burner was formed on the engraved surface. The flames of 1) are brought close to each other, and the engraved surface is heat-melted and / or heat-softened so that the original shape is not deformed as much as possible, and as shown in FIG. As shown in FIG. 4, the ready-mixed concrete 3 is cast by using the shape member 1 ″ as a form, and the ready-mixed concrete 3
After curing, the shape was removed from the profile 1 ″ to obtain a concrete shaped object with a cobblestone pattern formed on the surface. Polyethylene did not adhere and the surface of the profile was reliably transferred to the concrete model.

Example 2 As shown in FIG. 5, a heated pressing die 4 was pressed against foamed polyethylene to be thermally softened to obtain a profile 6 having a pressing surface 5 of the pressing die 4. Raw mortar was cast by using the shaped material 6 as a mold, and after curing, it was demolded to obtain a mortar shaped article having the pressing surface of the pressing die 4 formed on the surface. The shape 6 was good in releasability and could be used repeatedly, and the foamed polyethylene did not adhere to the mortar model, and the surface of the shape was reliably transferred to the mortar model.

Example 3 The foamed polyethylene 1 shown in FIG. 1 was engraved with a cutting tool (not shown) to form a cobblestone pattern 1'as shown in FIG. A pressing die 7 is pressed against the sheet to heat the engraved surface to soften it, thereby forming a shape member 8 having a smooth surface 2 ′ without skin roughness as shown in FIG. Placing ready-mixed concrete as a frame, after curing the ready-mixed concrete, demolding from the profile 8,
A concrete shaped article having a cobblestone pattern formed on the surface was obtained. The profile 8 was well released and could be used repeatedly, and the foamed polyethylene did not adhere to the concrete model, and the surface of the profile was reliably transferred to the concrete model.

Although the third embodiment has been described above, the present invention is not limited to the above embodiment, and the following embodiments can be adopted. The foamed synthetic resin referred to in the present invention includes foamed synthetic resins such as foamed polystyrene, foamed polyethylene, foamed polyurethane and polypropylene, as well as foamed synthetic rubber. The engraving means include thermal cutting and cutting with nichrome wire, scraping with a steel wire brush, paper finishing, engraving and finishing with abrasives, melting with solvents such as thinner, cutting with cutting blades and cutting tools, and rotary cutting tools. You can use cutting etc.,
When a pipe-type vibration cutting tool having a cutting blade formed on the outer circumference is used, cutting waste is sucked from the pipe and collected, so that the work can be performed in a clean environment. As the hardening raw material, raw concrete, raw mortar, an inorganic hardening raw material such as gypsum kneaded with water, or a hardening raw material obtained by adding an emulsion to these can be used. Clay or clay can be used. Dried and solidified modeling objects such as clay can be fired after demolding to make ceramics. The shaped material may be used as it is, or may be used by laminating it with a plate material such as plywood or a metal plate or a sheet.
As the heating tool, a heating tool such as a gas burner, a nichrome wire, or an electric heating tool can be used. When a curing or solidifying raw material is cast on the profile, it is preferable to apply a release agent. The number of times the profile is used can be increased. When using the pressing die, not only pressing the pressing die in the same direction, but also changing the pressing direction, sliding laterally, changing the pressing depth, etc. It is also possible to make patterns and correct engraving with cutting tools. That is, not only the pressing surface is transferred as it is, but also an arbitrary pattern or pattern can be formed by using a pressing die.

[0014]

EFFECT OF THE INVENTION The profile of the present invention is configured as described above, and it is possible to form a desired pattern or pattern at will, and moreover,
Due to heat melting and softening, the gaps and broken air bubbles of the foamed synthetic resin are closed or covered with a dense layer, and the surface of the pattern or pattern is smooth and smooth, so it can be used repeatedly with good release. Therefore, the surface of the profile is surely transferred to the model formed by using this profile, and since the foamed synthetic resin does not adhere to the model, the work of removing the deposit can be omitted.

[Brief description of drawings]

FIG. 1 is a cross-sectional view of expanded polyethylene before engraving.

FIG. 2 is a cross-sectional view of engraved polyethylene foam.

FIG. 3 is a cross-sectional view of an example of a shape member.

FIG. 4 is a cross-sectional view showing a place where ready-mixed concrete is placed on a shape member.

FIG. 5 is a cross-sectional view of another example of the shape member.

FIG. 6 is a cross-sectional view of another example of the shape member.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 ... Expanded polyethylene 1 ', 1 ", 6, 8 ... Section material 3 ... Fresh concrete 4, 7 ... Push mold 5 ... Pressing surface 2, 2' ... Smooth surface

 ─────────────────────────────────────────────────── ─── Continuation of the front page (71) Applicant 594003757 ▲ Taka ▼ Ken Tsuzu 2 27-43 (72) Miyoshi-cho, Fuchu-shi, Tokyo (72) Kazuo Takatsu 2-27-43 (43) 72-43, Miyoshi-cho, Fuchu-shi, Tokyo Inventor Nori Takatsu 2-27-43, Miyoshi-cho, Fuchu-shi, Tokyo (72) Inventor Masayuki Takatsu 2-27-43, Miyoshi-cho, Fuchu-shi, Tokyo (72) Midori Takatsu 2-27-Micho-cho, Fuchu-shi, Tokyo 43 (72) Inventor Ken Takatsu 2-27-43, Miyoshi-cho, Fuchu-shi, Tokyo

Claims (4)

[Claims] 1. A foamed synthetic resin is engraved, and the engraved surface is heated without touching a heating tool to be heat-melted and / or heat-softened, and the surface is smoothed so that a curing raw material does not adhere thereto. A characteristic material for modeling. 2. A molding material, characterized in that a pattern and a pattern are formed by applying a heated pressing die to a foamed synthetic resin to heat and soften it. 3. A molding profile, wherein a foamed synthetic resin is engraved, and a heated pressing die is applied to the engraved surface to heat-soften the surface, thereby smoothing the surface. 4. A hardened or solidified raw material is cast on the heat-softened and / or heat-melted surface of the profile according to claim 1.
A shaped article, which is obtained by curing or solidifying a raw material and then removing from the mold.