JPS5943284B2 - Method for manufacturing a mosaic synthetic resin sheet with a striped pattern - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a method and apparatus for producing a mosaic synthetic resin sheet having a striped pattern in the longitudinal direction, and more particularly to a method for producing a mosaic synthetic resin sheet having a striped pattern in the longitudinal direction. In the plate, one or more partition plates are formed, the inclined plate is divided into two or more, and a partition wall is provided inside the hopper at a position corresponding to the partition plate to form two or more chambers. , inserting chips of different colors, shapes, sizes, or combinations thereof into each chamber, and successively taking out the chips from each chamber of the hopper to each section of the inclined plate;
A method and apparatus for producing a mosaic-like flooring material, characterized in that the chips are arranged to form a striped pattern in the longitudinal direction of the base material on the base material that moves continuously through the inclined plate. It is something.

Conventionally, the manufacturing method for synthetic resin sheets with a mosaic pattern involves cutting chips from sheets of a composition made of thermoplastic synthetic resin, fillers, pigments, etc., and placing them on a base material such as cloth, paper, or asbestos. The powder was dispersed using a vibrating plate or other device, and then the gap between the chips was filled with hot-melt resin powder, which was then heated and pressed to form an integral sheet. However, in this method, the chips were mixed and arranged in an irregular manner, so the pattern formed on the sheet was monotonous and a characteristic pattern could not be obtained. The present invention has been made in view of this point, and provides a synthetic resin mosaic-like flooring material having a regular striped pattern in the longitudinal direction of the base material. Hereinafter, the present invention will be explained based on the drawings. 1st
The figure is a schematic cross-sectional view showing the manufacturing process of an embodiment of the present invention.
2 is a perspective view of the hopper and inclined plate for supplying chips in FIG. 1; FIG. In the figure, 1 is a base material such as synthetic resin, cloth, paper, or asbestos.
Is hopper 3' for supplying nuts hopper 2? The partition wall provided here, 4 is a chip, 5 is a measuring roll, 6
1 is an inclined plate, 1 is a partition plate provided on the inclined plate 6, and 8 is a vibration device. The inclined plate 6 is vibrated by a vibration device 8. 9 is a vibration table for applying vibration to the base material 1; 10 and IT are heating furnaces; 11 is a press roll;
2 is a backup roll, and 13 is a hopper for supplying hot-melt resin powder.

14 is a doctor blade for leveling, 15 is a rotary brush, and 16 is a suction cleaner.

Reference numeral 20 denotes a rotary press of rotocure type, which includes a turn roll 21, a pressure roll 22, and a steel band 23. 18 is a heating plate, 24 is a cooling roll, and 25 is a product winder.

Further, to describe the present invention in detail, as shown in FIGS. 1 and 2, chips 4a, 4b, and 4c having different colors, shapes, or sizes, or a combination thereof are partitioned by a partition wall 3 according to a desired pattern. Each room A, b of Tahotupa 12
, c.

These chips 4a, 4b, 4c are made of polyvinyl chloride,
A composition consisting of a thermoplastic synthetic resin such as vinyl chloride/vinyl acetate copolymer, a plasticizer, a filler, and a pigment is processed into a sheet with a thickness of 1.6 m1 by calender processing, and then processed using a dicing machine or the like. It is produced by cutting into any shape and size (preferably 5 mm to 7 m7!L square). These chips 4a, 4b, 4c...
... is taken out from each chamber A, b, c, ... of the hopper 2 by a measuring roll 5 having knurling or the like cut on its surface, and separated by a partition plate 7. Each section 6a, 6b, 6c of the inclined plate 6...
Continuously falling. The inclined plate 6 is vibrated continuously by a vibration device 8, and the chips 4a, 4b, 4c that have fallen into each section of the inclined plate 6 are vibrated continuously.
The vibration of the inclined plate 6 reduces the frictional resistance with the inclined plate surface and moves downward, thereby eliminating the overlapping of the chips. move to the bottom without mixing with each other while narrowing the gap between them. If the moving speed of the chips on the inclined plate 6 and the take-up speed of the substrate 1 are maintained at substantially the same speed, the chips arranged on the inclined plate can be arranged on the substrate 1 while maintaining that state. In this way, each room A, b, c...
The chips taken out from... complete a striped pattern arrangement on the base material 1 without mixing with each other. After the chips have been arranged, they are further subjected to fine vibrations on a vibration table 9.
Further, the array is arranged and moved into the heating furnace 10.

The base material 1 used in the present invention may be made of synthetic resin, cloth, paper, or asbestos, but is preferably a width coated with a heat-activated adhesive to a thickness of 0.0511 mm and dried. It is preferable to use an asbestos sheet with a thickness of 1,900mζ and a thickness of 0.77!1m. However, it is not necessary to apply adhesive. Here, the chips arranged on the base material 1 and the base material 1 are heated to 180° C. in the heating furnace 10, and the adhesive applied to the surfaces of the chips and the surface of the base material 1 is melted.

After that, the press roll 11 gives a total width of 400 to 300
The chips 4 are fixed on the base material 1 by applying a linear pressure of 0 kg, and after cooling, an appropriate amount of hot-melt resin powder is supplied from the hopper 13 to fill the gaps between the chips. Thereafter, the surface is leveled with a doctor blade 14, and the hot-melt resin powder remaining on the chip is removed with a roll brush 15. The hot melt resin powder adhering to the roll brush 15 is removed by suction by a suction cleaner 16 provided on the back side of the roll brush 15 and returned to the hopper 13. In this case, a vibrating brush or a vibrating device (not shown) for vibrating the base material may be attached as necessary in order to sufficiently fill the gaps formed between the chips with the hot-melt resin powder.
In this manner, the arrangement of the chips 4 and the filling of the hot-melt resin powder on the base material 1 are completed, and the base material 1 is moved to the heating furnace 17. Here, the chips arranged on the base material 1 and the heat-melting resin powder filled in the gaps between the chips are heated in a heating furnace 11 to
The turn roll 21. is heated to a temperature of 200°C to 200°C to be in a substantially molten state, and then the pressure roll 22 applies a linear pressure of about 4000 kg/length over the entire width to adjust the thickness, and then heated to about 180°C. The heat-melting resin powder is melted into an integrated sheet by applying heat and pressure using a steel band 23. After that, it is cooled by the cooling roll 24, and the third
Obtain the finished product shown in the figure. The finished product is wound into a roll by a winder 25. As described in detail above, the present invention is a relatively simple device in which a partition plate is provided on an inclined plate for transferring and arranging chips on a base material, and the pattern does not wear out during long-term use. It is possible to obtain a highly durable synthetic resin sheet with striped patterns in the longitudinal direction, and by changing the number of partition plates and the width of the sections, a wide variety of striped patterns can be obtained, which has great industrial value. be.

[Brief explanation of the drawing]

FIG. 1 is a schematic sectional view showing the manufacturing process of an embodiment of the present invention, and FIG. 2 is a perspective view of a hopper and an inclined plate for supplying chips in FIG. 1. FIG. 3 is a plan view showing a part of the finished product. 1...
... Base material, 2 ... Hopper, 3 ... Partition wall, 4 ... Chip, 5 ... Measuring roll, 6 ...・Slanted plate, 7... Partition plate, 8
... Vibration device, 9... Vibration table,
10... Heating furnace, 11... Press roll, 12... Backup roll, 13...
...Hotsupa 14...Doctor Blade, 1
5... Rotary brush, 16... Suction cleaner, 17... Heating furnace, 18...
... Heating plate, 20 ... Rotokyure type rotary press, 21 ... Turn roll, 22.
...Kada roll, 23 ... Steel band, ... Cooling roll, 25 ... Winding machine.

Claims (1)

[Claims] 1 In an inclined plate for transferring and arranging chips on a substrate, the inclined plate is divided into two or more sections, and different chips are supplied to each section from a hopper to form a striped pattern in the longitudinal direction of the substrate. A method for producing a mosaic-like synthetic resin sheet, characterized in that the sheet is arranged to form a mosaic pattern.