JPS6229244Y2 - - Google Patents

Description

[Detailed description of the invention] The present invention relates to a decorative sheet using a recycled PVC sheet as a backing layer. Specifically, by providing a new PVC resin layer, foreign matter and color unevenness on the surface of the recycled PVC sheet can be removed from the decorative sheet. This invention relates to a decorative sheet that does not adversely affect the layers.

In recent years, decorative sheets made of vinyl chloride resin, so-called vinyl chloride resin, have been widely used for wall materials, flooring materials, and the like.
In addition, along with this, the amount of defective products, processing waste, and used PVC sheets generated during processing has increased rapidly, and recycled PVC is increasingly being used to reuse resources and reduce product costs. There is. However, recycled PVC is colored in a variety of ways.
Furthermore, since foreign substances other than vinyl chloride may be mixed in, the products that can actually be used are limited to those that meet a certain standard.

The present invention was developed in view of the above points, and by providing a layer of new PVC on the surface of recycled PVC, it has become possible to use recycled PVC that could not be used in the past. It is something.

The present invention will be described in detail below with reference to the drawings.

FIG. 1 is a cross-sectional view showing one embodiment of the present invention, in which recycled PVC 4 and fresh PVC resin layer 3 are attached to the back surface of a sheet-like material 1 with a decorative layer 2 provided on its surface via an adhesive 5. A backing layer is laminated.

The decorative layer 2 may be simply a pattern layer formed with ink, or may be composed of a pattern layer and a surface protection layer. Further, as shown in FIG. 2, a recess 8 such as a conduit groove may be provided on the surface of the surface protection layer 7 provided on the pattern layer 6. Alternatively, as shown in FIG. 3, the coloring material 9 may be embedded in the recessed portion by a known method such as wiping.

Sheet material 1 is a PVC sheet, an acrylic sheet,
Select arbitrarily from fluorinated vinyl sheets, polyethylene sheets, polyester sheets, etc.

The fresh vinyl chloride resin layer 3 may be provided by applying a vinyl chloride sol to the surface of the recycled vinyl chloride, or by heat-sealing a vinyl chloride sheet to the surface of the recycled vinyl chloride.

Both the sheet-like material and the new PVC resin layer can be colored or uncolored, but in order to hide the color unevenness on the surface of the recycled PVC, the sheet-like material, the new PVC resin layer, and the pattern layer are used. It is necessary that at least one of the layers has concealment properties.

The appropriate thickness of the new vinyl chloride resin layer is 50 to 100μ.

Since the present invention has the above configuration, it has the following effects.

Since recycled PVC that could not be used in the past can be used, it is possible to reduce the cost of the product and at the same time help conserve resources.

Since the recycled PVC is not exposed on the adhesive surface of the backing layer, adhesive performance is not inhibited and a product with good adhesion can be obtained.

When installing, it can be applied directly without the need for a base layer.

When lining a sheet material with recycled PVC, there is no need to wash the surface of the recycled PVC with detergent or solvent as in the past.

The decorative sheet of the present invention can be used for a wide range of purposes, including wall materials, floor materials, floor coverings, and more.

Example 1 A pattern forming a base layer with a wood grain pattern was printed on an opaque colored PVC sheet (thickness 100μ). Next, an overlay sheet of transparent PVC sheets (thickness 100μ) was layered and heat-sealed, and at the same time, a conduit groove shape with a wood grain pattern was embossed, and then black ink for PVC was embedded in the embossed recesses using the wiping method. is. Next, a recycled PVC sheet with a thickness of 800μ is produced by casting processing, and then a 100μ thick
The colored PVC sheets were stacked and heat-sealed, and then laminated on the back side of the wiped sheet using an acrylic urethane two-component adhesive by a dry lamination method to obtain a decorative sheet. This decorative sheet was used as a flooring material.

Example 2 A pattern forming a base layer with a wood grain pattern is printed on an opaque colored PVC sheet (thickness 80 μm). Next, a transparent PVC sheet with a thickness of 100 μm is overlaid on top of the sheet and heat-sealed, and at the same time the wood grain pattern is I embossed the conduit of the handle and the joints of the parquet-like blocks. Next, the embossed recesses were colored using an acrylic urethane resin ink by a wiping method.

On the other hand, a recycled PVC sheet with a thickness of 800μ was manufactured by casting, and a new colored PVC sheet with a thickness of 100μ was heat-sealed through a glass nonwoven fabric with a basis weight of 150g/ ^m2 , and an acrylic urethane adhesive was applied. A decorative sheet was obtained by dry laminating the back surface of the wiped sheet.

[Brief explanation of the drawing]

The drawings show an embodiment of the present invention.
The figures are cross-sectional views of the decorative sheet of the present invention, Figures 2 and 3.
The figure is a sectional view showing an example of a decorative layer on the surface of a sheet-like article. 1... Sheet-like material, 2... Decorative layer, 3... New PVC resin layer, 4... Recycled PVC, 5... Adhesive, 6
...Pattern layer, 7...Surface protective layer, 8...Concave portion, 9
...Coloring material.

Claims (1)

[Scope of claims for utility model registration] (1) On the back side of a sheet-like article with a decorative layer on its surface,
A decorative sheet characterized by having a backing layer made of a recycled PVC sheet and a new PVC resin layer. (2) The decorative sheet according to claim (1) of the utility model registration, characterized in that the sheet-like material has concealing properties. (3) The decorative sheet according to claim (1) of the utility model registration, characterized in that the new vinyl chloride resin layer has concealing properties.