JP3961813B2 - Cork flooring - Google Patents

Description

[0001]
[Technical field to which the invention belongs]
The present invention relates to a cork flooring material that has sufficient strength with a single cork, is excellent in formability, and is rich in striking elasticity.
[0002]
[Contents of prior art]
Cork is a natural tree bark that is made of cells that contain fine, independent air, so it is highly elastic and excellent in compressibility. As a building material, it is widely used as a heat insulating material and vibration prevention material. Has reached.
In recent years, attention has been focused on flame retardancy, which is one of the characteristics, and plate materials made of cork on walls or floors are widely used as building materials for houses.
In particular, when a cork board is used as a flooring material for a house, it is necessary to consider walking performance and durability. Generally, a strong plywood is used as a core material and a cork board is attached to the core with an adhesive. Combined composite cork boards are known.
[0003]
As a method for producing such a cork plate, a cork plate having a square box shape is charged with cork grains mixed with an adhesive and heated and compressed in the thickness direction to obtain a cork having a plate thickness. After forming the block, it is common to obtain a cork board to be obtained by splitting or cutting to a desired thickness.
[0004]
[Problems to be solved by the invention]
A composite cork board obtained by laminating a cork board obtained as described above and a plywood board having rigidity such as a veneer board or a chip board is weight instead of having sufficient strength by a reinforcing action by the rigidity of the plywood board, The reality is that it has not been widely spread because it is disadvantageous in terms of price and has poor workability.
Of course, it is impossible to form a long plate material. When the necessity arises, it is necessary to perform jointing or addition, which not only detracts from the aesthetics but also greatly limits the construction site.
[0005]
On the other hand, as a method for continuously forming a cork plate with an extruder, a forming method is disclosed by, for example, Japanese Patent Application Laid-Open No. 58-224704, and according to this, cork particles are extruded to form individual cork particles. Shows a manufacturing method for continuously forming a cork plate arranged upright in the thickness direction.
[0006]
However, in the continuous cork board forming method using an extruder here, the cork grain extrusion forming method has a main focus, and it is not considered that the method of using it as a building material has been sufficiently studied. In particular, it cannot be a building material that places emphasis on its workability, weight as flooring, and elasticity. The present invention has been derived as a result of intensive studies for solving such problems, and details of the present invention are as follows.
[0007]
[Means for Solving the Problems]
The present invention is a cork floor material made of a natural cork material, which will be described in detail with reference to the drawings. As shown in FIG. 1, an adhesive is mixed with cork grains, and the cork plate material 1 is extruded using an extruder. However, each of the cork grains filled by the extrusion is aligned upright in the thickness direction, and the cork plate 1 is continuously formed while maintaining this state.
After the cork plate 1 is cut to a desired dimension as shown by the dotted line in FIG. 1, the tongue processing 2 is performed, which is engaged with each other at both ends of the cork plate 1 perpendicular to the extrusion direction as shown in FIG. A cork flooring A is formed.
[0008]
DETAILED DESCRIPTION OF THE INVENTION
In the extrusion molding of the cork plate material 1 according to the present invention, the cork grains sized to a desired appropriate diameter (about 3 to 10 mm) and the adhesive are mixed and stirred in advance so that the frame shape of the plate-like cylinder and the inside of the frame shape are mixed. A cork plate 1 that is formed by extrusion with a reciprocating plate-like extrusion piston and is subjected to vibrations, etc., when required when the frame mold is filled with cork grains. The upper layer has a low specific gravity and the lower layer has a high specific gravity. Form.
[0009]
The thus-formed cork plate 1 is formed by continuously extruding the cork grains with a certain thickness and width in a shape in which the cork grains are arranged upright in the thickness direction, and the upper layer and the lower layer have different specific gravity. Since it can be formed, the elasticity and rigidity can be obtained at the same time, and when used as a flooring material in a house or office, it can be cut to the desired length and can provide a flooring material with a good walking feeling that fits snugly. It will be a thing.
[0010]
The cork board material 1 formed here is cut into a desired dimension as shown by a dotted line in FIG. 1, for example, and the tongue processing is performed in which the cork board material 1 meshes with the small openings on both end surfaces perpendicular to the extrusion direction of the cork board material 1 as shown in FIG. 2 is applied to form a cork flooring A.
[0011]
In this tongue processing 2, when the tongue processing 2 is applied to the edge of the both end surfaces perpendicular to the extrusion direction (arrows in FIG. 1), a concave or convex portion is formed in the direction perpendicular to the direction of extrusion. In combination with the fact that each of the cork grains is aligned perpendicularly to the thickness direction in the cork plate material 1, it possesses a high density and strong rigidity. The thread processing 2 is realized.
[0012]
【Example】
In the formation of the cork plate material 1 of the present invention, a thermosetting adhesive is preferable as the adhesive mixed with the cork grains, and the cork grains mixed with the adhesive are extruded in a frame shape of a plate-like cylinder and compressed by a piston. At the same time, it is heated (about 100 ° C. to 180 ° C.) to promote the curing of the adhesive, which is extruded to obtain the cork plate material 1 continuously.
After that, it is cut to an appropriate size, and the elongated protrusions and elongated grooves 2 as shown in FIG. 2 are formed in the fore edge so that they can be engaged with each other.
As shown in FIG. 3, the cork flooring A formed in this way is arranged so that the mutual tongue portions are engaged with each other, and is fixed to the base 3 with the adhesive 4. (Of course, nailing is also possible.)
[0013]
【The invention's effect】
In the present invention, the cork plate material 1 is formed by extruding to obtain a density and a fixing strength that have not been obtained in the prior art. And by applying the ridge processing 2, the floor material can be formed with only solid cork material, and any of its weight, workability, handleability, finish, walkability, reusability, etc. can be obtained in the past. You can see the excellent effects that are not possible.
In other words, since heavy objects such as plywood are not used as the core material, they are light and easy to carry, and by forming the tongue 2 on the end surface perpendicular to the extrusion direction, sufficient strength can be obtained. Can be cut easily because it is a single piece of cork material, and a one-component urethane adhesive can be used as the adhesive to the base 3, and waste materials on site can also be crushed and reused Therefore, it has an environmental advantage.
Also, the specific gravity of the upper and lower layers can be formed into two layers, high and low, and the upper layer can be expected to have a good walking feeling while the lower layer can be used as a reinforcing material to support the upper layer. It is a flooring.
[Brief description of the drawings]
FIG. 1 is a schematic view showing a molding method of the present invention.
FIG. 2 is a schematic illustration of an embodiment formed in accordance with the present invention.
FIG. 3 is a cross-sectional view of an example of a floor formed in accordance with the present invention.
[Explanation of symbols]
A Cork flooring 1 Cork board 2 Sauce processing

Claims (2)

In cork flooring made of cork material,
Allowed mixed adhesive cork granules which was shaped extruded in a plate shape to form a cork plate, it Is mesh with other small to small a perpendicular end surfaces toward the extrusion by cutting the formed cork sheet Cork flooring characterized in that it is processed to form a flooring. The cork flooring according to claim 1, wherein the cork flooring is formed such that the specific gravity of the upper layer is light and the specific gravity of the lower layer is heavy.

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