JPH0828014A - Cushion floor material and production thereof - Google Patents

Abstract

PURPOSE:To prevent a cushion floor material from warping, by stacking a sheet filled with plastic, unshrinkable cloth, and a polyvinyl chloride foaming sheet from the upper layer to the lower layer respectively. CONSTITUTION:A sheet 1 filled with plastic, unshrinkable cloth 2, and a polyvinyl chloride foaming sheet 3 are stacked from the upper layer to the lower layer respectively. An emulsified polymerization type polyvinyl chloride is used as the polyvinyl chloride foaming sheet 3. Polyester fiber, glassfiber, aramid fiber, etc., are used as the material of the unshrinkable cloth 2, polyvinyl chloride, poly urethane, polyester, etc., are used as the sheet filled with plastic 1.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a cushion floor material which does not warp after manufacturing or is locally depressed during use, and a method for manufacturing the same.

[0002]

2. Description of the Related Art Cushion floors are used for walking,
It is widely used in hospital waiting rooms, nursing homes, kindergartens, etc. because it feels good against the soles of the feet when running and is safe even if it trips over and falls.

In such a cushion floor material, as shown in the sectional view of FIG. 2, a plastic solid body (1), a vinyl chloride foam sheet (3) and a non-shrinkable cloth (2) are upper layers, respectively. In most cases, the structure is such that the layers are sequentially stacked from the bottom to the bottom.

The cushion floor material is manufactured by the following process, which is easy to adopt a continuous process by a flow work. First, by the tenter method, while pulling the non-shrinkable cloth in the length direction and the width direction, it is moved in the length direction, and the polyvinyl chloride paste to which the foaming agent is added is evenly applied to the upper surface thereof with the same thickness, It was manufactured by heating, foaming and curing it into a polyvinyl chloride foam sheet, and adhering a plastic solid sheet to the upper surface thereof.

[0005]

Adhesion between a polyvinyl chloride foam sheet laminated by being foamed and cured on the upper surface of a non-shrinkable cloth and a plastic solid sheet in the manufacturing process of the conventional cushion floor material described above. Since it is carried out in a continuous process, it is in a high heat state during the heating process when the polyvinyl chloride is foamed and cured, usually around 150 ° C., but this heat is used as it is.

Since the plastic solid sheet used at this time is obtained by stretching at the time of molding the solid sheet, distortion remains inside. Therefore, the above-mentioned heat causes a shrinkage to appear as a contraction, and the manufactured cushion floor material is warped on the side of the solid plastic sheet. Also, after laying on the floor of the building, if you walk or run on it, the load will be concentrated on one point of the seat on the bottom of the foot, and only that part will be extremely distorted, In some cases, there are drawbacks such as foot contact and impaired cushioning.

A first object of the present invention is to obtain a cushion floor material which can solve the above two problems at once, and to provide a method for producing the cushion floor material. It has a secondary purpose.

[0008]

SUMMARY OF THE INVENTION The present invention provides a cushion floor material in which a plastic solid sheet, a non-shrinkable cloth, and a polyvinyl chloride foam sheet are sequentially laminated from the upper layer to the lower layer. One feature of the non-shrinkable cloth is that one surface of the non-shrinkable cloth is coated with a polyvinyl chloride paste containing a foaming agent, heated and foamed / cured to form one surface of the non-shrinkable cloth. The cushion floor sheet is manufactured by adhering the foamed / cured vinyl chloride foam sheet to an integrated body, and then adhering the plastic solid sheet to the other surface of the non-shrinkable cloth. It is a feature.

In carrying out the present invention, as the plastic solid sheet, polyvinyl chloride, polyurethane, polyester which is not easily affected by peeling, softening, etc. due to migration of the plasticizer in the polyvinyl chloride foam sheet located on the lower surface. Etc. are used with a thickness of 50 microns to 500
Micron ones are used. If the thickness is less than 50 μm, there is a problem in physical properties, and if it exceeds 500 μm, the feel to the sole is lowered.

As the polyvinyl chloride foam sheet, emulsion polymerization type polyvinyl chloride is used, which is inexpensive and can be formed into a paste suitable for a flow work process.
~ 3.0 times foamed.

As the non-shrinkable cloth, polyester fiber, glass fiber, aramid fiber or the like is used. These fibers are 170
Can withstand high heat of ~ 180 ° C. One side of the non-shrinkable cloth has no pressure on the foaming / curing of the polyvinyl chloride paste.
It is carried out in a heating device at 70 to 180 ° C.

Adhesion between the other surface of the non-shrinkable cloth and the plastic solid sheet is almost the same as when the polyvinyl chloride paste is foamed and cured on the one surface of the non-shrinkable cloth in a high heat state. The plastic solid sheets at the same temperature are piled up and pressed together to be bonded. That is, they are fused.

Further, it may be adhered to an elongated product at room temperature or in a state where the temperature is lowered so as not to be fused, or to a product having a size close to the final product, for example, 500 mm × 500 mm by using an adhesive. . At this time, when the plastic solid sheet is polyvinyl chloride, the polyvinyl chloride adhesive is used, and when it is polyurethane, the polyurethane adhesive is used.
In the case of polyester, polyester adhesives are used, and there are hot-melt type, solvent type, water-based type and the like.

[0014]

In the cushion floor material of the present invention, a heat-resistant non-shrinkable cloth is integrally formed between a plastic solid sheet having a strain as internal stress and a polyvinyl chloride foam sheet which easily shrinks when heated. Exist, so
These defects can be eliminated by allowing the non-shrinkable cloth to receive the warp during foaming / curing and the distortion due to the partial applied load as a product over the entire surface.

[0015]

EXAMPLE A polyvinyl chloride paste containing a foaming agent is applied to a mesh-shaped polyester fiber cloth to a thickness of 1.4 mm, and heated in a heating device at 170 ° C. for 15 minutes to foam and cure. At this time, the thickness became 4 mm. Apply polyester adhesive on the polyester fiber cloth of this laminate,
Polyvinyl chloride solid sheets having the same size and a thickness of 100 μm were stacked, pressed for 1 minute with a press machine at a temperature of 130 ° C., taken out from the press machine, and then cooled to room temperature.

The cushion floor material of the present invention thus obtained has a plastic solid sheet (1), a non-shrinkable cloth (2) and a polyvinyl chloride foam as shown in the sectional view of FIG. The sheet (3) and the sheet (3) are sequentially laminated from the upper layer to the lower layer. here,
As the floor material of the present invention, the floor material of FIG. 2 which has exactly the same material, thickness, foaming rate, size, etc. but is different in the laminated state was used as a comparative example.

One hour after the production, when the overall warpage was measured, the former was not warped at all, but the latter was warped in a state where the entire peripheral edge was 10 mm higher than the center point. It was happening. Also, after standing at room temperature for 24 hours, the bottom surface is a hemispherical rod with a radius of 10 mm for 24 hours,
When the thickness of the pressing part was measured 12 hours after releasing by continuously pressing so that the final thickness was 20 mm (the initial thickness was 40 mm), the former had a thickness of 38 mm.
The latter was 30mm.

[0018]

[Effect] The cushion floor material produced through the heating process does not warp at all, and it is incorporated in the floor of the building so that it can be locally depressed even when a person walks or runs on it. I was able to get no product.

[Brief description of drawings]

FIG. 1 is a cross-sectional view of a cushion floor material of the present invention.

FIG. 2 is a cross-sectional view of a conventional cushion floor material.

[Explanation of symbols]

 1 Plastic solid sheet 2 Non-shrinkable cloth 3 Polyvinyl chloride foam sheet

Claims (2)

[Claims] 1. A cushion floor material in which a plastic solid sheet, a non-shrinkable cloth, and a polyvinyl chloride foam sheet are sequentially laminated from an upper layer to a lower layer. 2. A non-shrinkable cloth is coated with a polyvinyl chloride paste to which a foaming agent is added, heated and foamed / cured, and one surface of the non-shrinkable cloth and the foamed / cured chloride. A method for producing a cushion floor material, characterized in that a vinyl foam sheet is bonded and integrated, and then a plastic solid sheet is bonded to another surface of the non-shrinkable cloth.