JPS5856339B2 - Method for partially coloring flocked projections of thermoplastic synthetic resin in sheet materials - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a method for partially coloring flocked projections of a thermoplastic synthetic resin in a sheet material, and is based on the applicant's earlier application (Japanese Patent Application No. 51248/1983). Instead of the thermoplastic resin film or sheet overlaid on the base material of the applied invention, thermoplastic resin sheets of two or more colors colored with kneaded pigments are used, and these are overlapped or arranged, or one part is A fabric is layered on top of the fabric, and two or more layers of wire mesh with different mesh densities are layered on top of it in the order of the denser mesh, and these are heated and pressurized to generate flocked protrusions. Partial coloring of flocked protrusions of a thermoplastic synthetic resin in a sheet material, which has a color greater than that of the original color and has protrusions that are longer in the overlapped part than in the non-overlapped part. The aim is to provide a method for doing so.

Embodiments of the present invention will be described below with reference to the drawings. Reference numeral 1 is paper (base material), on which a thermoplastic resin sheet 2 colored, for example, blue, colored with a kneaded pigment, and a white thermoplastic resin sheet 3 are layered. , furthermore, a fabric 4 such as woven fabric or knitted fabric is placed on top of it.
At the same time, a dense wire mesh 5 and a coarse wire mesh 6 are placed on top of this, and these are passed through a pair of heated upper and lower pressing rolls 7.7 to heat and press them.

In this case, the temperature and pressure of the roll will vary depending on the thermoplastic synthetic resin, the type of fabric, the desired length of the flocked protrusions 8, etc., but the most typical example is a polyvinyl chloride sheet, 10
In the case of 0 mesh plain woven fabric, the temperature is around 140℃ and 100kg.
It is appropriate to set it to about /ci.

Now, when the above-mentioned laminate is passed between the rolls 7 and 7 to produce flocked protrusions 8, the base side 9 of the flocked protrusions 8 is colored blue, the top side 10 remains white, and the whole is marbled. A patterned sheet material 11 is obtained.

Here, the generation of the flocked projections 8 will be explained in detail.
It is necessary to use two or more layers of wire meshes 5 and 6 with different mesh densities, and to press the wire mesh 5 with the denser one closer to the fabric 4.

As a result, the fabric 4 is buried in the resins 3 and 2, and flocked protrusions 8 are generated on the opposite side of the paper 1, and at the same time, the generated protrusions 8 extend into the space held by the coarse wire mesh 6, and the protrusions are Prevent mutual fusion.

Moreover, by pressing the fabric 4 with the dense wire mesh 5, the suppressing external pressure can be effectively converted into protrusion-generating pressure.

Furthermore, by adjusting the density of the wire mesh, the efficiency of resin extrusion pressure is improved.

Therefore, operations such as reducing the external pressure [7], lowering the suppression temperature, and lengthening the protrusion become possible.

It is necessary that the density of the wire mesh in the front is higher than the density of the fabric 4, and when the density of the wire mesh 5 in contact with the fabric 4 approaches the density of the fabric 4, the amount of protrusions generated will be reduced.

Further, it is preferable that the temperature at the time of suppression be as low as possible.

This is because as the temperature rises, the protrusions fuse together,
This is because the flexibility of the protrusions is significantly lost after cooling.

In addition, in the embodiment described above, two thermoplastic resin sheets are used.
In the above case, processing can be done by stacking layers, but this can be done with two or more layers, or sheets of two or more colors can be processed side by side without overlapping, and furthermore, one sheet can be used as a base and sheets of a different color can be processed. The sheets may be cut into a desired shape and then partially stacked to form two layers, or sheets of two or more colors may be partially stacked and processed.

As explained in detail above, in the present invention, when manufacturing a thermoplastic resin sheet, a sheet of a different color is created by mixing pigments into it, and if these sheets are stacked in two or more layers and processed, they are processed in the order in which they are stacked. A sheet material having individually colored flocked projections is obtained, which exhibits an overall marbled surface appearance.

Furthermore, if sheets of two or more colors are processed side by side without overlapping, flocked protrusions colored in two or more colors will appear as a colored pattern in which each color is arranged horizontally.

In this case, by changing not only the color but also the thickness of the sheet, it is possible to change not only the color but also the length of the flocked protrusions.

Furthermore, if one of the resin sheets is used as a base and a resin sheet of a different color is cut into a desired shape and then processed by overlapping it on the one sheet, the cut portion becomes a pattern.

That is, as the protrusions in the portion become longer, the portion swells up, and a sheet material is obtained in which a pattern is formed by the flocked protrusions in colors that are respectively colored from the top in the order in which they are stacked.

Furthermore, if sheets of two colors are placed side by side with one part overlapping and processed, the boundary part will be raised and a marbled colored sheet material will be obtained.

Therefore, according to the present invention, there is a large degree of freedom in color, and since a thermoplastic resin sheet colored with a mixed pigment is used, color fastness is high, and when the sheets are stacked, a product with a rich three-dimensional effect can be obtained.

Hereinafter, the present invention will be further explained in detail with reference to the following specific examples.

Example 1 40,! i'/m kraft paper, thickness 0.2 m
m blue colored polyvinyl chloride sheet, thickness 0.
3 mm white colored polyvinyl chloride sheet, 1
00 mesh blue-dyed cotton plain weave fabric, 15 mesh wire mesh, and 10 mesh wire mesh were layered in this order, and the top and bottom were heated to 145°C using a press with parallel planes to produce 100 kg/d. Pressure was applied for 30 seconds.

As a result, when flocked protrusions are generated, the top of each protrusion is white;
A sheet material product with a base having a blue composition and having flocked projections with a marbled pattern on the entire surface was obtained.

Example 2 Instead of the 0.3 mm thick white colored polyvinyl chloride sheet used in Example 1, a 0.3 mm thick black colored polyvinyl chloride sheet cut into the shape of a bird was used. Several vinyl sheets were formed, and this was layered on a blue-colored polyvinyl chloride sheet with a thickness of 0.2 mm. When processed in the same manner as in Example 1, the sheet material product obtained was blue. It had a pattern of raised hair-like protrusions with a black background, and the bird pattern had a raised surface because of the long protrusions.

Example 3 Instead of the two-layer sheet used in Example 1, a sheet with a thickness of 3
The same method as in Example 1 was carried out by alternately arranging white-colored polyvinyl chloride sheets of 11t11L and width 30 mm and blue-colored polyvinyl chloride sheets 0.5 mm thick and 20 mm wide without any gaps. When processed, the obtained sheet material product exhibited a striped pattern of blue and white flocked protrusions, and the blue portions were longer protrusions than the white portions and were raised, creating a stepped surface.

[Brief explanation of the drawing]

FIG. 1 is a side sectional view illustrating a processing method according to an embodiment of the present invention, and FIG. 2 is an enlarged sectional view of the obtained sheet material. Explanation of the main parts of the figure, 1...Paper (base material), 2゜3...Thermoplastic resin sheet, 4...Fabric, 5... Dense wire mesh, 6... Coarse wire mesh, 7... Press roll, 8... Flocked projections, 11... Sheet material.

Claims (1)

[Claims] 1 Overlapping or arranging thermoplastic resin sheets of two or more colors colored with kneaded pigments on a base material, or overlapping one part,
Layer the fabric on top of that, and then layer two fabrics with different mesh densities on top of that.
A layer or more of wire mesh is stacked in the order of density of the mesh, and by heating and pressurizing these, flocked protrusions are produced 17, the flocked protrusions have two or more colors7, and in the area where the sheets are overlapped. A method for partially coloring flocked protrusions of thermoplastic synthetic resin in a sheet material, characterized in that the protrusions are longer than the non-overlapping parts.