JPH0622451U - Concrete formwork material with a three-dimensional pattern - Google Patents

Abstract

(57) [Summary] (Modified) [Purpose] To provide a formwork material for easily forming a three-dimensional pattern on a concrete wall surface of a building. [Constitution] The present invention relates to a concrete casting form material for building concrete walls and columns. This mold material 1 is formed by laminating glass fibers impregnated with a synthetic resin on the surface and compression-molding with a mold having a three-dimensional pattern formed thereon to form the three-dimensional pattern 2 on the surface of the mold material. The three-dimensional pattern surface side of this formwork material is made to face the surface of a concrete wall or the like to form a formwork, and concrete is poured into this form to reveal a three-dimensional pattern on the concrete surface.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to the improvement of concrete injection formwork in buildings and the like.

[0002]

[Prior art]

 In the construction of a building using concrete, the wall surface and the like are formed by assembling a formwork with wood plywood at the required gaps, pouring concrete paste into it, and hardening it over time. The wood plywood used as the form material is made by thinly peeling timber with a rotary lace, and laminating it with an odd number of laminated melamine resin adhesives, etc. alternately in the fiber direction at right angles. Such wooden plywood has excellent workability such as cutting, joining, and disassembling, and is useful as a very easy-to-use material in the construction field.However, in the formwork, the water contained in the concrete paste penetrates into the wood. Further, the heat of solidification of concrete causes the plywood to wet and expand, and then returns to room temperature to evaporate water and cause shrinkage, causing cracks on the surface of the plywood and making it unusable again.

[0003] Therefore, a wooden plywood surface is coated with a resin coating such as an acrylic resin, an acrylic urethane resin, or a urethane resin to improve the water resistance, but the thermal expansion due to the heat of solidification of concrete is used. Due to the difference in the coefficient of expansion between the paint and the wood due to subsequent shrinkage, the paint surface breaks and water penetrates into the plywood, causing cracks, peeling of the plywood, or corrosion, and the service life is exhausted in about 3 to 4 times. It is in a state.

In order to further improve the durability of plywood, a thermosetting resin such as melamine resin, phenol resin or diallyl phthalate resin is formed on the surface of plywood by heat compression molding. Although it is very expensive and the durability is improved, it does not give any added value to the concrete surface formed by it, so there was a problem in economic efficiency in comparison with conventional products.

[0005]

[Problems to be solved by the device]

 Abuse of wood resources is expected to be effectively used as it leads to the destruction of the global environment. In order to improve the number of times wood plywood is used for formwork, we are going to develop a formwork material that has a surface treatment to increase the number of times it is used, and that has an added value that can fully absorb the cost increase caused by it. Is.

[0006]

[Means for Solving the Problems]

 There are various types of wood plywood, such as core special plywood, surface machined plywood, overlay plywood, painted and printed plywood, and chemical treated plywood, which are used in a wide range of applications. However, none of the materials for the concrete pouring formwork described above has water resistance and corrosion resistance. The present invention improves strength and water resistance by forming a wood grain or marble pattern on one surface of a wooden plywood with a material in which glass fibers are impregnated with a synthetic resin, and at the same time solidifies by contacting the plywood form material and solidifying. (EN) A plywood form material capable of imparting aesthetics or luxury to the wall surface of a building by showing an uneven pattern symmetrical to the pattern on the form material on the surface.

[0007]

【Example】

 Referring to the drawings, an embodiment of a plywood for a mold having a concavo-convex pattern according to the present invention will be described. A layer of glass fiber (which may be non-woven fabric or kraft paper) impregnated with resin is laminated to a thickness of several mm, and this is paired with a mold, that is, a flat metal template (3) and wood grain or marble. It is inserted between the molds (5) that have the three-dimensional engraved surface (4) of the pattern, and it is heated to about 150 degrees Celsius by a heat press machine and heated at a pressure of 15 to 20 kg per square cm for 5 to 15 minutes. The resin (2) is compressed and compression-molded to obtain a laminated molded product. Thermoplastics such as phenol resin and melamine resin are mainly used as synthetic resin, but thermoplastic resin or rubber may be used. The size of the wooden plywood is preferably 600 × 1800 mm from the viewpoint of the strength of the mold, but it is not particularly limited. Further, the pattern of the three-dimensional sculptured surface (4) is not limited to wood grain or marble pattern, and may be a geometric pattern, a plant pattern such as ivy, or a relief such as a human body.

[0008]

[Effect of device]

 The formwork material according to the present invention is formed by laminating a resin layer reinforced by fibers such as glass fiber on the surface of plywood and is naturally excellent in water resistance. It has sufficient strength against expansion and contraction of plywood and does not crack. Therefore, the number of times it can be used as a form material is dramatically improved, and the mold releasability from hardened concrete is improved, and the disassembly work of the form can be made more efficient.

Furthermore, the three-dimensional pattern surface (2) such as wood grain formed on the surface of the wooden plywood (1) of the present invention is made the inner surface side, and the normal form plywood (6) is used for the opposing surface to construct a concrete formwork, When the concrete paste is poured into this, a three-dimensional pattern is transferred and formed on the solidified concrete surface, which gives the appearance and luxury. Therefore, the cost increase for forming a three-dimensional pattern on the plywood by synthetic resin molding can be sufficiently covered by the effect of giving a high-class feeling to the concrete surface. There are various uses such as forming the wall surface of the entrance of a building or home using such a form material.

Conventionally, there was a method of forming a three-dimensional pattern by pouring rubber into a mold and pasting it on the inner surface of a concrete formwork, and then pouring concrete to form a three-dimensional pattern on the concrete surface. It was a lot of work to put on. On the other hand, the production of the three-dimensional pattern surface by the formwork material of the present invention is only an ordinary work of assembling the formwork at the construction site, and there is also an advantage that it does not hinder the progress of the construction work without any additional work. is there.

[Submission date] June 22, 1992

[Procedure Amendment 1]

[Document name to be amended] Statement

[Correction target item name] 0006

[Correction method] Change

[Correction content]

[0006]

[Means for Solving the Problems]

 There are various types of wood plywood, such as core special plywood, surface machined plywood, overlay plywood, painted and printed plywood, and chemical treated plywood, which are used in a wide range of applications. However, none of the materials for the concrete pouring formwork described above has water resistance and corrosion resistance. The present invention improves the strength and water resistance by forming a pattern such as wood grain or marble with a material in which glass fiber is impregnated with a synthetic resin on one surface of a wooden plywood and abutting against the plywood form material. The present invention provides a plywood form material capable of imparting aesthetics or luxury to the wall surface of a building by allowing a concavo-convex pattern symmetrical to the pattern on the form material to appear on the solidified concrete surface. In order to form such a concavo-convex pattern of synthetic resin on the surface of the mold frame, glass fiber impregnated with plastic is laminated on plywood, and compression molding is performed by hot pressing with a mold engraved with the pattern. However, the pattern engraving on the mold surface is done by hand, machine, or etching. Therefore, any kind of sculpture, highly realistic pattern, etc. can be produced, and it is possible to provide a form material that can meet various user needs.

[Procedure Amendment 2]

[Document name to be amended] Statement

[Correction target item name] 0009

[Correction method] Change

[Correction content]

Furthermore, the three-dimensional pattern surface (2) such as wood grain formed on the surface of the wooden plywood (1) of the present invention is made the inner surface side, and the normal form plywood (6) is used for the opposing surface to construct a concrete formwork, When the concrete paste is poured into this, a three-dimensional pattern is transferred and formed on the solidified concrete surface, which gives the appearance and luxury. Moreover, the three-dimensional pattern formation of the mold material of the present invention can be obtained at low cost because it is manufactured by a mass production method called synthetic resin molding. Furthermore, by preparing molding dies with various types of engraved pattern surfaces, it is possible to meet a wide range of user needs, and the slight cost increase will be fully covered by the effect of imparting a high-class feeling to the concrete surface. There are various uses such as forming wall surfaces of entrances of buildings and homes using such formwork materials.

[Brief description of drawings]

FIG. 1 is a perspective view showing a concrete formwork using the formwork material of the present invention.

FIG. 2 is a perspective view showing the molding of the three-dimensional pattern of the mold material of the present invention.

[Explanation of symbols]

 1 Formwork material 2 Resin impregnated fiber layer and three-dimensional pattern surface 3 Metal template 4 Three-dimensional engraving surface of mold 5 Mold 6 Plywood

Claims (1)

[Scope of utility model registration request] 1. A formwork material used for a concrete formwork is laminated with glass fiber, non-woven fabric or paper impregnated with a synthetic resin such as thermosetting resin on its surface, and heated with a template having a three-dimensional pattern such as wood grain or marble. A mold material that is compressed to form a three-dimensional pattern on the surface of the mold material.