JPH0111772Y2 - - Google Patents

Description

[Detailed description of the invention] This invention relates to an intermediate material that is laid between a painted urethane resin layer and a concrete plane.It is easy to install a painted urethane resin floor that has excellent cushioning properties and does not cause unevenness. The present invention provides an intermediate material for painted urethane resin floors that can be obtained.

In recent years, painted urethane resin floors, in which urethane resin is applied directly onto concrete surfaces, have been used in tennis courts, athletic fields, etc.; Not only does the painting process have to be repeated 3 to 4 times, which requires a great deal of time and effort, but since the urethane resin layer is formed directly on the concrete surface, it can cause damage to the inside of the concrete due to the heating of the outside temperature. When water expands and turns into water vapor, there is no place for the generated water vapor to escape, which causes delamination between the concrete surface and the painted urethane resin layer, resulting in defects such as unevenness on the floor surface. are doing.

The intermediate material of the painted urethane resin floor of the present invention is a synthetic fiber needle-punched cloth made of polypropylene, polyester, or nylon, and a polyethylene or polypropylene film whose surface has been subjected to corona discharge treatment. A base sheet is formed of laminated sheets that are bonded together so that the corona discharge treated surface of the film becomes the outer surface, and the corona discharge treated surface of the polyethylene or polypropylene film in the base sheet includes: It has a multilayer structure in which a coating synthetic resin layer is formed of a thermoplastic synthetic resin that has adhesive properties to the painted urethane resin, and by using the intermediate material, it has excellent cushioning properties, and A painted urethane resin floor that does not cause unevenness and has a durable adhesive strength of the painted urethane resin layer can be easily applied without the trouble of repeating urethane resin coating three or four times. This can be achieved through careful construction.

The specific structure of the intermediate material for the coated urethane resin floor of the present invention will be explained below based on illustrated examples.

In FIG. 1, the intermediate material 1 of the painted urethane resin floor, which is an embodiment of the present invention, is made of relatively thick needle-punched cloth 2 made of synthetic fiber and polyethylene whose surface 3 has been subjected to corona discharge treatment. Or a base sheet 5 made of a laminated sheet in which the polypropylene film 4 is bonded to the polyethylene or polypropylene film 4 so that the corona discharge treated surface 3 is the outer surface.
and a coating synthetic resin layer 6 formed on the corona discharge treated surface 3 of the polyethylene or polypropylene film 4 in the base sheet 5.

In the intermediate material 1 for the painted urethane resin floor of the present invention, the synthetic fiber needle-punched cloth 2 provides the resulting painted urethane resin floor with appropriate cushioning properties and prevents the passage of water vapor generated from the concrete floor surface. Polypropylene, polyester, which exhibits stability against the alkalis found in concrete.
Alternatively, a synthetic fiber needle-punched cloth 2 that is obtained using synthetic fibers made of nylon and has a thickness of usually about 2 to 10 mm is used, but the thickness and basis weight of the fibers that make up the needle-punched cloth 2 are as follows: It is selected as appropriate depending on the desire.

The polyethylene or polypropylene film 4 bonded to the needle punched cloth 2 made of synthetic fiber is coated with urethane resin formed on the upper surface of the intermediate material 1 made of the needle punched cloth 2 made of synthetic fiber, which penetrates into the needle punched cloth 2. It acts as a filler to prevent
It is sufficient if the thickness is about 20 to 200 μm. The polyethylene or polypropylene film 4 in the intermediate material 1 can be formed by extrusion coating a polyethylene resin or polypropylene resin onto the surface of the synthetic fiber needle-punched cloth 2, or by interposing a separate polyethylene or polypropylene film with a suitable adhesive. A method of attaching the needle punch cloth 2 made of synthetic fiber to the surface of the needle punch cloth 2,
Alternatively, it may be formed by directly heat-sealing or adhering a separate polyethylene or polypropylene film to the surface of the synthetic fiber needle punch cloth 2, but the presence of the polyethylene or polypropylene film 4 is The polyethylene or polypropylene film 4 should be free of additives such as slip agents and antistatic agents so as not to have an adverse effect on the painted urethane resin layer formed on the upper surface of the intermediate material 1. is preferred.

Coating synthetic resin layer 6 in intermediate material 1 of the present invention
is for increasing the adhesive strength between the intermediate material 1 of the present invention and the coated urethane resin layer formed on the upper surface of the intermediate material 1, and is a thermoplastic material having adhesive performance to the coated urethane resin. It is made of synthetic resin such as urethane-based, polyester-based, polyethyleneimine-based, etc., and is formed on the corona discharge treated surface 3 of the polyethylene or polypropylene film 4 to a thickness of approximately 0.01 to 5 μm. . The laminated structure of the coating synthetic resin layer 6, the polyethylene or polypropylene film 4, and the synthetic fiber needle punch cloth 2 is, for example, a layered structure on the corona discharge treated surface of a polyethylene or polypropylene film whose surface has been subjected to a corona discharge treatment. , synthetic resin layer 6 coated by synthetic resin coating method
The coated film on which is formed is bonded to a synthetic fiber needle-punched cloth 2, or to the polyethylene or polypropylene film surface of a laminated sheet of a synthetic fiber needle-punched cloth 2 and a polyethylene or polypropylene film 4. , forming a covering synthetic resin layer 6, or the like.

Intermediate material 1 of the present invention consisting of the above structure
As shown in Fig. 2, the intermediate material 1 is bonded to the upper surface 8 of the existing concrete floor 7 with nine layers of adhesive, with the synthetic fiber needle punch cloth 2 side facing. A coated urethane resin layer 10 is formed on the coating synthetic resin layer 6, which is the upper surface of the intermediate material 1, and a finished coated urethane resin floor is obtained.

The intermediate material of the present invention and the construction of a painted urethane resin floor using the intermediate material are constructed as described above, and regardless of the thickness of the urethane resin coating,
A painted urethane resin floor with high and durable cushioning properties can be obtained with simple construction operations.

In addition, when constructing a painted urethane resin floor using the intermediate material of the present invention, all that is required is to drill a small hole at the end of the painted urethane resin floor that passes through the painted urethane resin layer and the intermediate material. Since the water vapor generated from within the concrete is dissipated through the synthetic fiber needle punch cloth 2 in the intermediate material, peeling of the painted urethane resin layer due to the water vapor generated from within the concrete is suppressed, and the painted urethane resin floor is It also has the effect of preventing unevenness from occurring on the surface.

[Brief explanation of the drawing]

Fig. 1 is a schematic vertical sectional view showing an embodiment of the intermediate material for the coated urethane resin floor of the present invention, and Fig.
FIG. 2 is a schematic vertical sectional view showing an example of a painted urethane resin floor constructed using the intermediate material shown in the figure. 1... Intermediate material for painted urethane resin floor, 2... Needle punch cloth made of synthetic fiber, 4... Polyethylene or polypropylene film whose surface 3 has been subjected to corona discharge treatment, 5... Base sheet of intermediate material, 6...Coating synthetic resin layer made of thermoplastic synthetic resin, 7...Concrete, 10...Painted urethane resin layer.

Claims (1)

[Scope of utility model registration request] A needle-punched cloth made of synthetic fibers made of polypropylene, polyester, or nylon and a polyethylene or polypropylene film whose surface has been subjected to corona discharge treatment are arranged so that the corona discharge treated surface of the polyethylene or polypropylene film is the outer surface. The laminated sheets that are pasted together constitute a base sheet of an intermediate material, and the corona discharge treated surface of the polyethylene or polypropylene film in the base sheet is coated with a thermoplastic synthetic resin that has adhesion performance to the painted urethane resin. An intermediate material for a painted urethane resin floor, characterized by being provided with a covering synthetic resin layer.