KR20020011157A - Device for and method of forming emboss on a vinyl pasteboard - Google Patents

Abstract

PURPOSE: A device and a method for forming a vinyl film are provided to produce a vinyl film as a completed product by a serial process and to strengthen tensile strength by simultaneously stretching the vinyl film lengthwise and crosswise. CONSTITUTION: A device for forming a vinyl film comprises an extruder(10) extruding a molten material, a dice(14) forming the half-completed produce as a bubble-shaped half-completed product, a heating room(30) uniformly heating the vinyl film flowing in after passing by first and second winding rollers(22,26) and many idle rollers(24), a drawing machine(40) simultaneously stretching the vinyl film crosswise and lengthwise, a press(50) forming a pattern on the vinyl film by cold pressing, and a winder(70) winding the vinyl film into a roll. Herein, a vinyl film is produced by a serial process and stretched simultaneously. Therefore, productivity is improved and a vinyl film having high tensile strength is obtained.

Description

DEVICE FOR AND METHOD OF FORMING EMBOSS ON A VINYL PASTEBOARD}

The present invention relates to a plastic sheet forming apparatus and a molding method, and more particularly, to manufacture a vinyl sheet molded in the extrusion process through a single continuous process, while in the stretching process two stretching rollers and two The present invention relates to a plastic sheet forming apparatus and a molding method capable of producing a vinyl sheet having excellent draw strength by simultaneously stretching the vinyl sheet horizontally and vertically using two eccentric rollers.

In the case of products made of rubber materials, such as tires, the rubber fabric and the surface of the rubber material are prevented from being damaged during the manufacturing process, and foreign substances are removed from the fabric, and a vinyl sheet is inserted between the rubber material and the rubber material to provide adhesive rubber. Use vinyl paste to prevent ash entanglement. When removed, the vinyl strip must have sufficient tension to allow it to fall off the rubber material.

In particular, in order to protect the surface of the glass fiber produced in the glass fiber production process, which is a high-tech industry, and to remove foreign substances, the surface of the vinyl sheet should be evenly distributed. Is required.

As a conventional vinyl sheet manufacturing method, there is a method of forming an embossed vinyl sheet disclosed in Korean Patent Publication No. 87-1802 published on October 13, 1987. The embossing molding method of the vinyl sheet is made by supplying the roller of the plastic sheet to the roller through the resistance roller and then heating it with a heater so that the plastic sheet of the vinyl sheet drawn from the drawing plate is installed with a water-cooled chiller and a rubber roller. It has a configuration in which the embossed molded in the compression roller is formed through the roller and closely contacted with the compression roller by the auxiliary roller to completely cool the roller.

The vinyl sheet molded by the conventional vinyl sheet forming method, including the molding method disclosed in Patent No. 87-1802, manufactures a fabric in an extrusion process to produce a product by melting a resin, which is a raw material in a solid state, and a molecular ring Is already formed in the state of forcibly passing through the heat medium, the heat is applied to draw, there is a problem that the already formed molecular ring is forcibly stretched to decrease the strength.

The present invention for solving such problems is to make a vinyl sheet molded in the extrusion process to a finished product through a series of one process, while stretching the vinyl sheet at the same time horizontally and vertically to create a vinyl sheet having excellent tensile strength. It is an object of the present invention to provide a molding apparatus and a molding method of vinyl sheet.

1 is a block diagram showing a molding apparatus of a vinyl sheet according to the present invention,

2 is a plan view of a vinyl sheet prepared according to the present invention,

3 is a cross-sectional view taken along the line III-III in FIG.

♣ Explanation of symbols for main part of drawing ♣

10: extruder 30: heating room

40: drawing machine 42, 44: drawing roller

46, 48: eccentric drawing roller 50: press

52: pressing roller 60: cutting roller

62: cutter 70: winder

100: vinyl mount 102: mount

104: embossing 110: vinyl mount roll

The apparatus for forming vinyl sheet of the present invention for achieving the above object is an extruder for extruding molten raw material, a die for molding the semi-finished product extruded from the extruder into a bubble-shaped semi-finished product, the first and second take-up roller and A heating room for heating the vinyl sheet introduced through the plurality of idle rollers so that heat is evenly distributed over the entire surface, and a drawing machine for simultaneously stretching the vinyl sheet from the heating chamber in the horizontal and vertical directions by the stretching means; It is characterized by consisting of a winding machine for winding the vinyl sheet discharged through the drawing machine to form a pattern, and a winding of the rolled vinyl sheet in the form of a pattern.

In addition, the molding method of the present invention is an extrusion process of extruding the raw material by an extruder, a take-off process of taking a semi-finished product in a bubble form while passing through a die in the form of a vinyl sheet, and to maintain the drawn vinyl sheet at a constant temperature A heating step of heating in a heating room, a stretching step of stretching the heated vinyl sheet in a horizontal and vertical direction by a drawing machine, a pressing step of pressing the drawn vinyl sheet by a press to form a pattern, and a compressed vinyl sheet It is characterized by consisting of a winding step of cutting the wound to a predetermined length.

Hereinafter, with reference to the accompanying drawings will be described in detail with respect to the molding apparatus and molding method of the vinyl sheet according to an embodiment of the present invention.

1 is a block diagram showing a molding apparatus and a molding method of a vinyl sheet according to the present invention, Figure 2 is a plan view of a vinyl sheet prepared according to the present invention, Figure 3 is a cross-sectional view taken along the line III-III in Figure 2 to be.

First, as shown in FIG. 1, when a schematic configuration of a molding apparatus and a molding method of a vinyl sheet according to the present invention is seen, an extrusion process of extruding raw materials by an extruder 10 and a die 14 are performed. A take-off process for taking a semi-finished product in the form of a bubble (18) in the form of a vinyl sheet, a heating process for heating the heated vinyl sheet in a heating room (30) to maintain a constant temperature, and a heated vinyl sheet drawing machine ( A stretching step of stretching in the horizontal and vertical directions by 40), a pressing step of pressing the stretched vinyl sheet with a presser 50 to form a pattern, and a winding of cutting and winding the compressed vinyl sheet to a predetermined length. It consists of a process.

In the present embodiment, the semifinished product extruded from the extruder 10 is transferred to the die 14 through the feed pipe 12, and then formed into a semifinished product in the form of a bubble 18 while passing through the die 14. The semi-finished product shaped in the form of bubble 18 is drawn in the form of a vinyl sheet by a first take-up roller 22 disposed at one end of the frame 16, and then the plurality of idle rollers 24 and the second take-off. It is conveyed to the heating room 30 while being further taken through the roller 26.

At this time, since the land roller has the generated heat even in the process of passing through the second take-up roller 26, it is not necessary to heat the heating room 30 to an excessively amplified temperature and pass through the heating room 30. When the temperature of the heating room is adjusted to an appropriate temperature according to the thickness of the produced vinyl sheet, the temperature of the heating room is evenly spread on the front surface of the vinyl sheet to be evenly stretched in each direction in the next drawing process.

The vinyl sheet from the heating room 30 is simultaneously stretched in the horizontal and vertical directions by the stretching means of the present invention. The stretching means employed in the present invention is disposed between the first and second stretching rollers 42 and 44 and the first and second stretching rollers 42 and 44 so as to be eccentric so as to stretch the vinyl sheet horizontally and vertically. The first and second eccentric rollers 46 and 48 are arranged.

At this time, in order to smoothly stretch the vinyl sheet, it is preferable to forcibly blow high temperature heat to the cooled vinyl sheet with a hot air blower, thereby preventing excessive stretching by the drawing plate and preventing a phenomenon in which the molecular ring is stretched. To this end, in the present invention, the land is stretched simultaneously by a plurality of rollers (42, 44, 46, 48) in the horizontal and longitudinal direction, so that the stretching force is naturally drawn in accordance with the flow of the vinyl sheet to be conveyed, the tensile force due to deformation of the molecular ring The phenomenon of deterioration was prevented.

In addition, in the present invention, the diameter of the second stretching roller 44 is larger than that of the first stretching roller 42, and the vinyl sheets conveyed at the same speed are first and second stretching rollers 42 and 44. By using the difference in the rotational force due to the difference in diameter of the circumference of the vinyl sheet to be naturally stretched. On the other hand, the stretching only in the lateral direction affects the tensile force by extending the molecular ring in only one direction, so that the first and second eccentric rollers 46 and 48 longitudinally eccentric are first and second stretching rollers 42. , 44), the vinyl sheet is stretched in the horizontal and vertical directions to increase the tensile strength.

The vinyl sheet passing through the drawing machine 40 is compressed by the presser 50. At this time, in order to cold press the stretched vinyl sheet, the pressing roller 52 is supplied with a coolant, which is pumped from the cooler 80 by the pumping motor 82, through the pipe 84. The cooled pipe 84 is returned to the cooler 80 through the return pipe 86.

The vinyl sheet having the pattern is cut into a predetermined length by the cutter in the course of passing the roller 60 and the cutter 62, and then wound in the form of a roll by the winder 70. In this way, the production of a vinyl sheet through a continuous process from the extrusion of raw materials to the finished product can reduce the manufacturing cost, the manufactured vinyl sheet is stored in a suitable place or shipped in the form of a roll (110).

The shape of the vinyl sheet 100 made through this process is illustrated in FIGS. 2 and 3. As shown here, a plurality of embossing 104 is formed on the vinyl sheet 100, and these embossing 104 is adhered to the ground surface 102 through a plurality of pressing portions 106.

According to the present invention as described above, while the plastic sheet molded in the extrusion process is made into a finished product through a series of one step, by stretching the vinyl sheet in the horizontal and vertical direction at the same time, it is possible to make a vinyl sheet with excellent tensile strength have.

Claims (4)

An extruder 10 for extruding the molten raw material, A die 14 for molding the semi-finished product extruded from the extruder 10 into a semi-finished product in the form of a bubble 18, and A heating room (30) for heating the vinyl plates introduced via the first and second take-up rollers (22, 26) and the plurality of idle rollers (24) to distribute heat evenly over the entire surface; A stretching machine 40 for simultaneously stretching the vinyl sheet from the heating room 30 in the horizontal and vertical directions by the stretching means; Compressor 50 for forming a pattern by cold pressing the vinyl sheet discharged through the stretching machine 40, Molding apparatus for a vinyl mount, characterized in that consisting of a winder (70) for winding the vinyl sheet compressed in the compactor (50). The method of claim 1, The drawing means comprises a first drawing roller 42, A second drawing roller 44 spaced apart from the first drawing roller 42 at a predetermined interval, and having a diameter larger than that of the first drawing roller 42; And first and second eccentric rollers 46 and 48 disposed between the first and second stretching rollers 42 and 44 so as to be eccentrically arranged so as to stretch the vinyl sheet in the horizontal and longitudinal directions. Molding apparatus for vinyl sheet. The method of claim 1, Molding apparatus of the vinyl mount, characterized in that the cutter 62 for cutting the vinyl sheet 100 at predetermined intervals between the pressing machine 50 and the winding machine 70. An extrusion process of extruding the raw material by the extruder 10, A take-off process of pulling the semi-finished product in the form of a bubble 18 into a vinyl sheet while passing through the die 14; A heating step of heating in the heating room 30 to maintain the drawn vinyl sheet at a constant temperature, An stretching step of stretching the heated vinyl sheet in the horizontal and vertical directions by the stretching machine 40; A crimping step of pressing the stretched vinyl sheet with a presser 50 to form a pattern; A method of forming a vinyl sheet, characterized by comprising a winding step of winding the compressed vinyl sheet to a predetermined length.