JPH0230849A - Recycled and usable tile-like flooring, execution method and recycled use thereof - Google Patents

Abstract

PURPOSE:To enable an execution and, at the same time, to make it possible to collect used floorings to recycle and use them by using the floorings which are simply arranged on a floor foundation without using adhesive as a floor. CONSTITUTION:A surface layer is a contamination resistance and wear resistance layer having resin more than 30wt.%. An intermediate layer and a lower layer are a load resistance layer including filler more than 50wt.%. A reinforcing material of fiber is built in any place ranging from the intermediate layer to the lower layer. A thickness of the whole flooring formed by laminating three layers of the surface layer, intermediate layer and lower layer is 4-8mm, and a length of one side is 30-60cm. The flooring having such a constitution can be used as a floor by arranging simply on a floor foundation without using adhesives, and a residual and used flooring is collected to recycle and use as a material of new flooring.

Description

[Detailed Description of the Invention] The present invention is a thermoplastic resin flooring material that can be used as a floor by simply laying it side by side in the same way as tatami mats without using adhesives. The present invention provides flooring materials that can be recovered and reused as raw materials for new flooring materials, a method for constructing the same, and a method for recycling the same.

Flooring made of synthetic resin has been known for a long time. These synthetic resin tiles are used by being attached to a base using an adhesive. Therefore, partial repair or replacement is difficult. Furthermore, even in the case of complete re-pasting, a great deal of labor and expense is required for the removal work and subsequent repair of the base. Furthermore, since they are attached to the substrate with adhesive, they cannot be recycled after use, making it impossible to utilize resources effectively, and there are also pollution problems when disposing of waste.

SUMMARY OF THE INVENTION An object of the present invention is to provide a flooring material that can be used without using an adhesive and can be recycled as a raw material for new flooring materials after use.

The present invention is a laminated type sheet consisting of three layers: a surface layer, an intermediate layer, and a lower layer, which are made by heating and kneading a synthetic resin composition mainly consisting of a thermoplastic resin, a plasticizer, and a filler. In tile flooring, the surface layer is a stain-resistant and wear-resistant layer with a resin content of 30 wt% or more, and the middle and lower layers contain a filler of 5% or more.
It is a load-bearing layer containing 0wt% or more, and has a full thickness that imparts dimensional stability and load-bearing property, characterized by having a fiber reinforcing material embedded somewhere from the middle layer to the lower layer. 4-8 m, preferably 5-7 m, - a recyclable tile-like flooring with a side length of 30-600 mm;
A method of constructing a recyclable tile-like flooring material characterized by simply laying the flooring materials side by side on a floor substrate without using an adhesive, and a method of collecting the waste material of the flooring materials constructed without using an adhesive. The gist of the present invention is a method for recycling and using flooring materials, which is characterized in that the materials are crushed, washed, dried, and recycled as raw materials for the middle layer or lower layer of new flooring materials.

Synthetic resin flooring has stain resistance, strength, dimensional stability,
Various performances such as workability are required. Among them, effective use of resources and reupholstery work.

When considering repair, application to raised floors, etc., it is ideal for flooring materials to have sufficient performance to withstand use without the use of adhesives. In order to meet these demands, in addition to the general performance of tiles, tiles must have particularly excellent curling resistance (property that does not warp), dimensional stability against temperature changes, strength, and load-bearing properties. It won't happen.

Therefore, in the present invention, the surface layer has a resin content of 30 wt% or more to provide a layer with excellent stain resistance, superiority resistance, breakage resistance, etc., and the middle layer and lower layer have a filler content of 50 wt%.
By using a layer with a large filler content of % or more, it is inexpensive, has a large specific gravity, prevents warping toward the surface layer, and has good load resistance. The middle layer contains a smaller proportion of filler than the lower layer to ensure the strength of the flooring material. This allows even if the surface layer is as thin as 0.3 to 1.5 m/m.

The presence of the intermediate layer prevents the intermediate layer itself and the entire flooring from tearing or breaking. Dimensional stability is imparted by using one to three layers of fiber reinforcing material at any position from the middle layer to the lower layer depending on the purpose of use. In the case of a laminate, warping is likely to occur if the balance between the layers is lost.Therefore, the buried position of the reinforcing material must be carefully determined within the above range to maintain the strength balance of the three layers. The material is preferably impregnated with a synthetic resin composition, and has a total thickness of 4 to 8 cm, a side length of 30 to 60 cm, and an own weight of 2.
~4kg150d.

The flooring material of the present invention having such a configuration has excellent dimensional stability and warp resistance,
In addition, since they are heavy, they can be used simply by arranging them without using adhesives. After use, it is collected, crushed, washed, dried, kneaded again into a sheet, and recycled as an intermediate layer or lower layer of new flooring materials. At this time, the fiber reinforcing material is uniformly dispersed in the recycled portion, resulting in good performance.

Further, the relationship between the thicknesses of each layer in the present invention is preferably adjusted so that the ratio of (intermediate layer + lower layer) to 1 surface layer is 3 or more.

The thermoplastic resin used in the present invention includes polyvinyl chloride, its copolymer, and polyolefin resin, and the plasticizer includes DOP.

Examples of fillers include BBP and the like, and examples of fillers include calcium carbonate, silica, and mica.

Examples of the fiber reinforcing material include woven fabrics and nonwoven fabrics made of various inorganic fibers including glass fibers, and woven fabrics and nonwoven fabrics made of organic fibers. However, these are merely examples and are not limited thereto.

The formulations shown in Table 1 were prepared as pastes for the surface layer, intermediate layer, lower layer, and reinforcing material impregnation.

Table 1: A floor tile with the following configuration (thickness 5.0m/m, 50a*square) was made by laminating these sheets with a laminator using a resin-impregnated reinforcing material (thickness approx. 0.1a+/m). Create JI
The table below shows the results of performance measurements based on SA-5705.
Shown in 2.

The reinforcing material in the configuration example was buried at a position of 2.0 m/m from the surface.

Table 2 The surface layer, middle layer, and lower layer were heated and kneaded using a Banbury mixer, and then rolled using a calendar roll to give a thickness of 0.5 m/m for the surface layer and middle layer.

About 1.4 to 3. Sheets having various thicknesses of Ome/i+ were prepared. The impregnating paste was mixed in a Henschel type mixer, impregnated into a glass nonwoven fabric (basis weight: 20 g), and then heated. Table 2 shows that the floor tile according to the present invention has a load resistance.

It can be seen that the tile has good dimensional stability and warpage, and is suitable as a tile to be used without adhesive. In addition, flexibility is a measure of compatibility with the base, and is measured at 35°C.
There is no problem if the stiffness value of is 6000 or less.

As described above, according to the present invention, since no adhesive is used, partial repair, improvement, modification, and construction are easy, and complete replacement work is also possible. Furthermore, used flooring materials can be collected and reused, which is preferable because it helps to effectively utilize resources and prevents the generation of waste.

Claims (1)

[Claims] 1. A laminated type tile consisting of three layers: a surface layer, a middle layer, and a bottom layer, which are made into a sheet by heating and kneading a synthetic resin composition mainly consisting of a thermoplastic resin, a plasticizer, and a filler. In flooring materials, the surface layer has a resin content of 30wt% or more and is stain resistant.
It is a wear-resistant layer, and the middle layer and lower layer contain 50wt of filler.
% or more, and is characterized by having a fiber reinforcing material buried somewhere between the middle layer and the lower layer, with a total thickness of 4 to 8 mm and a side length of 30 to 6 mm.
0mm recyclable tile flooring material. 2. A method for constructing a recyclable tile-like flooring material, which comprises simply laying the flooring material according to claim 1 side by side on a flooring base without using an adhesive. 3. The waste floor material according to claim 1, which was constructed without using an adhesive, is crushed, washed, dried, and recycled as a raw material for the intermediate layer or lower layer of a new floor material. How to reuse flooring materials.