JPH0527739B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION (Technical Field) The present invention relates to a method for forming a flooring material to be laid on the floor of a gymnasium, the floor of a building used for an event hall or a lecture hall, the roof of a building, etc.

(Prior Art) Conventionally, for example, a cushion layer is used as a flooring material laid on the floor of a gymnasium, and is made of a large number of granular elastic materials adhered to each other with gaps in between, in order to soften the impact of athletes and players. A flooring material is used which consists of the cushion layer and a synthetic resin surface layer formed on the cushion layer.

The cushion layer of this flooring material has excellent shock absorption properties, cushioning properties, etc. because the particulate matter in the layer can be elastically deformed so as to individually fill the voids. On the other hand, the surface layer has partial elasticity that can transmit the impact, etc. applied to the surface layer as faithfully as possible to the cushion layer, and maintains the overall rigidity, that is, the formability necessary for the floor surface. The thickness dimension is set so that

By the way, when the flooring material is used for exercise or normal walking on the floor surface, good shock absorption properties, comfortable cushioning properties, etc. are obtained, and the flooring material is hardly damaged. However, when an impact is applied to the floor surface by, for example, a flagpole for hoisting a flag or something with a pointed portion such as an umbrella, the pointed portion easily penetrates the surface layer. This has the disadvantage that the surface layer is torn and the cushion layer is damaged.

In order to compensate for this drawback, it is conceivable to cover the surface of the cushion layer with a reinforcing material.

(Object of the Invention) An object of the present invention is to provide a forming method for easily laying a flooring material with increased tear resistance without impairing the overall rigidity and local elasticity of the surface layer. be.

(Structure, operation, and effects of the invention) The present invention provides an adhesive material that is sprayed onto a cushion layer formed by adhering a large number of granular elastic materials to each other with gaps in between so as to cover the surface of the cushion layer. The basic idea is to spread a large number of reinforcing materials and then apply liquid resin on the reinforcing materials.

According to the present invention, a large number of reinforcing materials sprayed with adhesive are placed on the cushion layer by dispersing the reinforcing materials, so it is easier to lay the flooring material than when this is done by hand. The time and effort required can be significantly reduced. Furthermore, when the reinforcing material is sprayed, the voids in the cushion layer that open to the surface are closed or filled by the reinforcing material, so when the liquid resin is applied, It is possible to eliminate the need for sealing in advance to prevent water from flowing down through the air, and this also facilitates labor-saving work in laying the flooring material.

The forming method according to the present invention is also characterized in that the cushion layer is formed by scattering a large number of granules sprayed with an adhesive, thereby further reducing the time and labor required for laying the flooring material. .

(Embodiments) The features of the present invention will become clearer from the following description of the illustrated embodiments.

A floor covering 10 made in accordance with the present invention is shown in the drawings. Floor material 10 includes a cushion layer 14 placed on a floor slab 12 such as a concrete slab.
and a surface layer 16 disposed on the cushion layer.

The cushion layer 14 is formed by adhering a large number of elastic particles 18 to each other with gaps 20 in between.

As the elastic granules 18, granular rubber chips as shown in the figure, granular cork chips (not shown), etc. can be used. The cushion layer 14 is formed by applying a mixture of a large number of elastic particles 18 and a liquid resin that hardens at room temperature, such as urethane resin or epoxy resin, which acts as a glue to mutually adhere them to the floor plate by applying with a trowel or the like. It can be formed to a desired thickness by leveling the layer 10.

The liquid resin is used in an amount necessary and sufficient to bond the elastic particles 18 to each other, that is, in an amount that covers a part or at most the entire surface of the elastic particles 18. This allows the elastic particles 18 to be individually elastically deformed.
0, and the cushion layer 14 has good elasticity, shock absorption, sound insulation, heat insulation, etc.

The cushion layer 14 can also be formed by spraying a large number of elastic particles 18 sprayed with the liquid resin onto the floor slab 12 to a predetermined height. According to this forming method, it is not necessary to mix the liquid resin and the elastic granules 18, and the time and labor can be significantly reduced compared to the case of manual leveling.

The spraying of the liquid resin and the above-mentioned dispersion can be performed, for example, as follows.

A large number of elastic granules 18 are ejected from a conduit (not shown) connected to a supply source (not shown) of the elastic granules 18 using air as a carrier medium, and at the time of ejection, a spray gun (not shown) is ejected. ) spraying the liquid resin toward the large number of elastic particles 18;
As a result, the liquid resin is sprayed onto a large number of elastic particles 18. The conduit is directed upward so that the plurality of elastic particles 18 onto which the liquid resin has been sprayed fall onto the floor slab 12. Note that the amount of the liquid resin sprayed in this case is also set to be a necessary and sufficient amount to bond the elastic particles 18 to each other.

The surface layer 16 on the cushion layer 14 consists of a large number of mutually bonded reinforcing materials 22 that cover the surface of the cushion layer 14, and a resin layer 24 that covers the surface of the reinforcing materials.

The reinforcing material 22 is made of glass fibers, resin fibers, metal powders such as iron powder, metal grains such as iron particles, and a large number of threads made of glass fibers such as the illustrated example arranged in parallel on a plane. And a connected glass cloth can be used. The glass cloth may have lengths of 30 mm and 2 to 3 mm in length and width, respectively. The adhesive and the amount thereof for adhering the reinforcing materials 22 to each other are the same as those for adhering the elastic granules 18 to each other, and a liquid resin that hardens at room temperature such as urethane resin or epoxy resin is used. Only cover a portion or at most the front part of the surface.

The reinforcing material 22 may be placed before the liquid resin of the cushion layer 14 is cured, but it may be placed after the liquid resin is completely cured or after the cushion layer 14 has developed a supporting force by being semi-cured. It is desirable to place

The reinforcing material 22 can be placed by spraying and dispersing the adhesive, similar to the method used to form the cushion layer 14. That is, a large number of reinforcing materials 22 are ejected from a conduit (not shown) connected to a supply source (not shown) of reinforcing materials 22 using air as a conveying medium, and at the time of ejection, a spray gun (not shown) is ejected. ) to the reinforcement material 2
The liquid resin is sprayed toward 2, thereby,
The liquid resin is sprayed onto a large number of reinforcing materials 22.
The conduit is oriented upwardly so that the plurality of reinforcements 22 sprayed with the liquid resin fall onto the cushion layer 14. In this way, a large number of reinforcing materials 22 sprayed with the liquid resin as an adhesive are applied to the cushion layer 14 so as to close the spaces 20 between the elastic particles 18 that are open on the surface of the cushion layer 14. can be placed to cover the surface of Further, when the metal powder or metal grains are used for the reinforcing material 22, the void 20 opened on the surface is filled with the metal powder or metal grains sprayed or coated with adhesive.

In addition, when the reinforcing material 22 is the metal powder or metal particles, it can also be placed by spreading a mixture of these and the liquid resin on the cushion layer 14 by troweling. In the case of fibers, resin fibers, glass cloth, etc., when coating with a trowel, they have a tendency to form lumps during coating, so the above-mentioned spreading method must be used.

The resin layer 24 includes a predetermined liquid resin of the same type as that used for adhering the elastic granules 18 to each other and the reinforcing materials 22 to each other on a large number of reinforcing materials 22 arranged in a substantially layered manner on the cushion layer 14. It can be formed by coating it until it reaches a thickness of .

In the resin layer 24, the void 20 opening on the surface of the cushion layer 14 is closed or filled with the reinforcing material 22, so that the liquid resin applied to form the resin layer 24 is prevented from flowing down. Eliminates the need for eyelids. The resin layer 24 is the reinforcing material 2
It can be formed at any time before the adhesive material No. 2 is cured, after it is semi-cured, or after it is completely cured.

As an example of the thickness dimensions of the reinforcing material 22 layer and the resin layer 24 that constitute the surface layer 16, each of the thicknesses is 1 to 3.
mm. Furthermore, the penetration pressure resistance of the conventional surface layer consisting only of a resin layer is approximately 12 kg/cm ² , but the reinforcing material 22
By providing this layer, the penetration pressure resistance of the surface layer 16 can be increased.
It can be increased to ^about 30Kg/cm2.

Note that the liquid resin used to form the adhesive for the elastic granules 18 in the cushion layer, the adhesive between the reinforcing materials 22, and the resin layer 24 is one type of room-temperature curable resin, such as a urethane resin. It is desirable to unify the

[Brief explanation of drawings]

The drawing is a longitudinal sectional view of a flooring obtained according to the invention. 10: Floor material, 14: Cushion layer, 16: Surface layer, 18: Elastic granules, 20: Sky, 22: Reinforcement material (glass cloth), 24: Resin layer.

Claims (1)

[Claims] 1. On a cushion layer made of a large number of granular elastic materials adhered to each other with gaps, a large number of reinforcing materials sprayed with an adhesive are sprayed so as to cover the surface of the cushion layer. and then applying a liquid resin onto the reinforcing material. 2. The forming method according to claim 1, wherein the cushion layer is formed by spreading a large number of granular elastic materials coated with an adhesive. 3. After forming a cushion layer by dispersing a large number of granular elastic materials sprayed with an adhesive, a large number of reinforcing materials sprayed with an adhesive are sprayed onto the cushion layer so as to cover the surface of the cushion layer. A method of forming a flooring material, which comprises spraying and then applying a liquid resin onto the reinforcing material. 4. The forming method according to claim 3, wherein the adhesive and the liquid resin are urethane resin liquid.