JP3739583B2 - Manufacturing method for flooring - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a method for producing a flooring material having excellent walking feeling and sound insulation and having no distortion and strong durability, and specifically, a composite flooring material having high dimensional accuracy using a cork material and a rubber material. It relates to a manufacturing method .
[0002]
[Prior art]
Conventionally, as a flooring mainly composed of cork used for a floor of a house, a cork board formed by forming cork grains into a desired thickness is laminated and integrated on a core board such as a plywood or a rubber board and integrated. In general, instead of laminating the above plate materials, as shown in JP-A-62-30859, cork grains having a desired grain size and vulcanized rubber material are used. Adhesive is attached to and mixed with rubber particles that have been pulverized to an appropriate particle size, and these are separated by vibration or dust separation to form layers with different specific gravity, and then integrally molded into a sheet and laminated A flooring structure is also proposed.
[0003]
[Problems to be solved by the invention]
However, the composite material in which the former cork plate formed into a sheet is bonded to a core plate such as a rubber plate is formed by smooth shaping the surface of a pre-formed cork material and pasting it on the core plate. Therefore, there is a great disadvantage that the cost is inevitably increased.
In addition, in the composite structure in which each of the latter vulcanized rubber material and cork material is pulverized to an appropriate particle size and integrally formed with an adhesive, it takes more time than the pasted integrated structure, The molding process is complicated and can not be provided at a low cost, and the finished structure is also formed by directly curing the entire structure from the pulverized product, resulting in inconvenient disadvantages as a flooring such as defective dimensions and surface roughness. A lot is left.
The present invention eliminates such drawbacks, and provides a production method for producing a flooring material having excellent moldability, light weight, low cost and high dimensional accuracy.
Hereinafter, it will be described in detail with reference to the drawings.
[0004]
[Means to solve the problem]
The present invention will be described in detail with reference to the drawings. As shown in FIG. 1, it is a method for producing a layered floor material composed of a plate-like cork material and a rubber material, and an adhesive is applied to cork particles pulverized to an appropriate particle size. mixed to allowed compressed form cork sheet (1) of the desired thickness, cork sheet mixing the rubber sheet unvulcanized provisionally formed into a sheet (2a) and rubber chemicals said preformed containing vulcanizing agent ( 1) and superimposed, Korukushi DOO which was cured by entering the rubber material by penetration of the unvulcanized rubber material to small gap between the cork granules of cork sheet (1) and allowed to pressurizing and heating the molding press It is characterized by a method for producing a flooring in which (1) and a rubber sheet (2a) are molded and integrated in layers.
[0005]
Moreover, it is a manufacturing method of the floor material which consists of the said cork material and a rubber material, Comprising: As shown in FIG. 2, the sheet-like unvulcanized | cured rubber sheet (2a) of the said cork sheet (1) is to the surface which cannot be overlaid. Another feature is a manufacturing method in which a surface agent (3a) is disposed and pressed with a molding press to form a painted surface (3) to obtain a surface-finished layered flooring.
[0006]
DETAILED DESCRIPTION OF THE INVENTION
In the present invention, the floor material is formed using the two materials having different elasticity, that is, the cork material and the rubber material as described above, and the following great effects are obtained.
First, natural cork is composed of fine cells and the air that the cells hold. Its characteristics are lightweight, strong elasticity and high compression recovery, thermal insulation and vibration absorption, It has major features such as excellent sound insulation.
Next, a rubber material made of a natural material or a synthetic material has high elasticity, stretchability, and density, and is an extremely excellent buffer material as an absorbing material for vibration and impact.
[0007]
In the present invention, the cork material is pulverized to an appropriate particle size to form cork particles, and an adhesive is mixed with the cork particles and compressed to form the cork sheet (1).
Next, the sheet-like unvulcanized fabric rubber sheet (2a) is overlaid with the cork sheet (1), and this is heated and compressed to form a cork sheet (1) and a molded rubber sheet (2). The cork sheet (1) has good sound insulation, compression recovery, decoration, and light weight by the manufacturing method in which different elastic plates are integrated without using an adhesive. The rubber sheet (2) is bonded to the high elasticity, stretchability or adhesiveness of the rubber sheet (2) to obtain a floor material having a good gait and high dimensional accuracy and durability.
[0008]
【Example】
Examples are shown below.
Cork grains used in the present invention can be easily pulverized to a particle size of about 0.5 mm to 5.0 mm for elasticity as a flooring material, mixing of adhesives, and obtaining a smooth surface after molding. Therefore, it is preferable.
As the adhesive to be mixed with the cork grains, a synthetic resin liquid that is cured by heating, such as urea resin, melamine resin, or phenol resin, or an emulsion of these synthetic resin liquids is used.
On the other hand, natural rubber, styrene butadiene rubber, nitrile butadiene rubber or the like is used as a rubber material as a rubber material, and various rubber chemicals including a vulcanizing agent are added depending on required physical properties.
[0009]
In molding, the preformed cork sheet (1) and unvulcanized rubber sheet (2a) are put into a mold having a cavity of a desired size, and heated at 140 ° C. to 170 ° C. to 6-10 kg / Crush for about 8 minutes to 20 minutes at cm ² to form a cured product.
The cork sheet (1) and the rubber sheet (2) formed as described above are cured by the rubber material entering a slight gap between the cork grains of the cork sheet (1), and each of them forms a tree root state. The cork sheet (1) is firmly entangled and entangled to show a strong bond.
In this way, physical bonding that is not fixed by adhesive force is realized by utilizing the high permeability of the unvulcanized rubber material that is shown during compression.
[0010]
Further, when the sheet-like unvulcanized fabric rubber sheet (2a) is overlapped with a pre-formed cork sheet (1) and heat-compressed, the rubber sheet (2a) cannot be overlapped as shown in FIG. If a surface agent (3a) such as wax or vanish is applied to the opposite surface, and this is heat-pressed and molded and integrated, a smooth painted surface (3) will be formed on the surface that is the walking surface. High-quality flooring can be provided.
[0011]
【The invention's effect】
With the above configuration, the following excellent effects can be obtained.
Unlike the composite structure in which a cork plate and a rubber plate formed in advance using an adhesive are bonded together, the present invention directly presses the cork sheet (1) and the unvulcanized rubber sheet (2a) into a floor. The cork sheet (1) has good sound insulation, compression recovery, decoration, and light weight by integration using the high permeability of such a rubber material. ), Which is combined with high elasticity, stretchability or adhesiveness, and has a good gait and high dimensional accuracy and durability.
[Brief description of the drawings]
FIG. 1 is a cross-sectional view showing an embodiment according to the manufacturing method of the present invention.
FIG. 2 is a cross-sectional view showing another embodiment according to the manufacturing method of the present invention.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Cork sheet 2 Rubber sheet in vulcanized state 2a Rubber sheet in unvulcanized state 3 Painted surface 3a Surface agent

Claims (2)

In the manufacturing method of the floor material formed by laminating the cork material and the rubber material,
Adhesive is mixed with cork grains pulverized to an appropriate particle size to compress the cork sheet,
A rubber sheet containing a vulcanizing agent is mixed with an unvulcanized rubber sheet temporarily formed into a sheet shape, and the pre-formed cork sheet is overlaid,
This allowed hot pressing in molding press, allowed to integrate into the cork grains between the small gap in the unvulcanized rubber material of the permeable cork sheet and the rubber sheet was cured by entering the rubber material by a layer of cork sheet A method for producing a flooring characterized by the above. In the method for producing the flooring ,
Applying a surface agent to the opposite surface of the cork sheet to be overlaid with the unvulcanized rubber sheet,
2. The method for producing a flooring material according to claim 1, wherein this is press-molded by a molding press and molded and integrated into a layer shape.

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