JPH0579232B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to a decorative material suitable for floor tiles, wall materials, etc.

(Prior Art and Problems) As a conventional method for patterning tiles, a method has been proposed in which motsules are added to a base material, heated and mixed, and then calender rolled.

However, this method only produced a long and narrow pattern in the rolling direction, resulting in poor pattern change.

(Structure of the Invention) The present invention improves the conventional tile so that
Regarding a decorative material that can obtain a cloud-shaped pattern or a stone-grain pattern that varies both in the width direction and in the flow direction, a heated softened sheet containing a base material and a coloring material is slitted on the surface, and is held at an angle of 90 degrees to the slit. The gist is a decorative material having a pattern obtained by rolling in the direction of. The present invention will be explained below based on the drawings.

Figures 1 and 2 are manufacturing process diagrams of the present invention.
5 to 50% by weight of colored pellets 2, which are different from the base material 1, are sprinkled as a pattern material on a softened thermoplastic resin base material 1 such as PVC that has been heated and kneaded at 130 to 180°C, and mixed. roll 3,
3', a relatively thick sheet 4 of 10 to 60 mm is formed.

A slit is made in the obtained sheet 4. The device for making the slits is one in which a large number of knife-shaped steel plates 5 are provided on the surface of a roll 6 or on one side of a flat plate, and the sheet 4 is pressed with these. Knife-shaped steel plate 5
By appropriately selecting the slits, slits of any shape and spacing can be formed.

Using this method, slits (grooves) are made intermittently in sheet 4.
Preferably, it is added over a thickness of 1/4 or more of the base material.

The sheet material is required to be substantially heated and softened when the slits are made. For this reason, if necessary, heat it with a heater just before making the slit. The heat-softened state is a state in which incisions can be easily made and softness can be maintained without causing any trouble in creating a sheet during calender processing in the subsequent process.

In the sheet 4 of the present invention, a pattern material may be formed in the base material, or a pattern material layer with a uniform thickness may be formed below the base material, but in this case, the pattern material layer Make the slit reach up to.
After making slits in the sheet, use a turntable to
Make a 90 degree turn. In this case, as shown in FIG. 2, a slit 12 is provided in the sheet (the part 13 surrounded by the dotted line is the internal pattern material).
This is turned 90 degrees on turntable 7 and rolled in direction A by calender rolls.

In the present invention, the sheet must be in a softened state immediately before rolling, and the sheet 4 whose direction has been changed is rolled by reverse L calender rolls 8, 9, and 10 to obtain the sheet 11 of the decorative material of the present invention.

This sheet may be made into a thickness of 2 to 3 mm and cut into floor tiles as it is, or it may be laminated as a thinner flexible sheet onto a PVC substrate and cut into tiles.

FIG. 3 is a perspective view of the decorative material obtained in FIG. 1, and 14 is a pattern of the decorative material.

FIG. 4 shows another embodiment of the base material of the present invention, where 1 is the base material and 15 is a patterned material with a uniform thickness of 5 to 30 mm provided under the base material. The sheet containing the base material and the pattern material is slit through the thickness to reach the pattern material.

FIG. 5 is a perspective view of a decorative material 16 of the present invention obtained by rolling the base material of FIG. 4 with slits formed therein.

(Effects of the Invention) Decorative materials such as stone grain patterns and cloud patterns that vary and spread in the width direction compared to conventional methods were obtained.

〔Example〕

A resin composition having the following formulation was heat-kneaded at 175°C to form a light brown base material.

Composition Weight % Polyvinyl chloride (degree of polymerization 800) 24.5 Filler 65.8 Stabilizer 1.3 Plasticizer 8.1 Light brown pigment 0.3 Pellets of a different color from the base material are sprinkled on the softened base material and mixed with a mixing roll. After kneading, the pellets were kneaded to a thickness of 20 mm so that the pellets were evenly distributed, and a roll with a knife-shaped steel plate formed around the above structure with a surface temperature of 165°C was rolled to a thickness of 1/4 or more of the thickness of the sheet. After making slits to a certain depth, the slitted sheet was turned 90 degrees on a turntable and rolled with three rolls heated to 160°C to obtain a 2 mm cloud-shaped sheet. This sheet was punched out into squares of approximately 30 cm on each side to obtain floor tiles.

[Brief explanation of the drawing]

1 and 2 are manufacturing process diagrams of the decorative material of the present invention, FIGS. 3 and 5 are perspective views of the present invention, and FIG. 4 is a diagram of another embodiment of the base material of the present invention. 1 is a base material, 2 and 15 are colorants, 5 is a knife-shaped steel plate, and 14 is a pattern of a decorative material.

Claims (1)

[Claims] 1. A decorative material having a pattern obtained by making a slit in the surface of a heat-softened sheet containing a base material and a coloring material and rolling it in a direction 90 degrees to the slit.