KR101982241B1 - Slate manufacturing device using disused fibre - Google Patents

Abstract

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to a slate manufacturing apparatus, and more particularly, to a slate manufacturing apparatus using waste fibers that can produce a construction slate having excellent durability using waste fibers such as waste non- .
According to the present invention, there is provided a winder for winding a material prepared in the form of a roll and feeding the material to a path of a next process. A tension holder for keeping a transfer tension of the work material fed from the winder constant; An oven for allowing the material to be compressed to a predetermined thickness by heating and pressurizing the material transferred along the process direction via the tension holder, A first cutting machine for cutting both ends of the material passed through the oven to standardize the width size; A shaping and cooling device for shaping the workpiece having passed through the first cutting machine into a predetermined shape and shape and quenching the workpiece to improve the durability of the workpiece; And a second cutting machine for cutting the molded product having passed through the molding and cooling device to a predetermined length to standardize the length size of the finished product.

Description

TECHNICAL FIELD [0001] The present invention relates to a slate manufacturing apparatus using waste fibers,

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to a slate manufacturing apparatus, and more particularly, to a slate manufacturing apparatus using waste fibers that can produce a construction slate having excellent durability using waste fibers such as waste non- .

The preference of disposable products due to industrial development and the use of disused synthetic fibers (hereinafter referred to as " disposable synthetic fibers ") such as waste fabric and waste nonwoven fabric or waste woven fabric discarded after use of clothes or woven fabric Quot; waste fiber ") is increasing, and most of them are not recycled and are buried or incinerated together with other industrial wastes.

This is not only a waste of resources from the national level, but also contains environmental pollution such as air pollution caused by odor and harmful substances generated during incineration and soil / water pollution when landfilled.

In view of the above-mentioned prevention of environmental pollution, the related research and development for the recycling and use of waste materials (building materials, building materials, etc.) without incineration or incineration of waste fibers are continuously carried out in terms of recycling of resources .

As an example, it is being recycled as fiber board slate used for roof, ceiling, interior and exterior, and such fiber plywood slate is a new concept of eco-friendly building material which can replace existing asbestos slate and tin slate. It is in the limelight. Especially, since it is manufactured without using chemical adhesive, it is harmless to human body and has superior strength than any existing products, and has convenient processability.

Based on this technical idea, Korean Patent Laid-Open Publication No. 10-2007-0019318 discloses a washing and dehydrating tank for washing and dehydrating waste synthetic resin obtained by collection and pulverization in an appropriate size to remove moisture, A drying wiper for transferring the waste synthetic resin obtained by removing the waste synthetic resin to a conveyor, and a rotary wing for blending the dried waste synthetic resin and the inorganic pigment supplied from the pigment hopper in an appropriate ratio, A melt extruder for secondarily heating and melting a raw material blended in the blending extruder with a heater and discharging the melted raw material through a pair of screws provided in the blending extruder; A pressurizer that pressurizes and discharges the discharged raw material by the drum roller; and a pressurizer that pressurizes the raw material transferred from the pressurizer to an appropriate size And a plurality of cooling and molding machines for respectively cooling and compressing the conveyed raw materials respectively formed in accordance with the use of the building material. A building material manufacturing apparatus using synthetic resin and a manufacturing method thereof are disclosed.

However, in the industrial building material manufacturing apparatus using the waste synthetic polymer material according to the related art, the waste synthetic resin is automatically regenerated through the procedure of screening, crushing, washing, dehydrating and drying, and the recovered waste synthetic resin and inorganic pigment It is accomplished by blending in appropriate ratio, melting it, then cutting it to a certain size, and cooling it by a cooling molding machine. As the bonding strength between the waste synthetic resin and the inorganic pigment is weak or the nonwoven fabric is shrunk by the shrinkage of the material, There is a problem that it is not suitable to be used.

Korean Patent Publication No. 10-2007-0019318 (Published Date: Feb. 15, 2007)

SUMMARY OF THE INVENTION An object of the present invention is to solve one or more of the problems as described above, and it is an object of the present invention to provide a method of manufacturing a semiconductor device, And to provide a slate manufacturing apparatus using waste fibers which can produce a finished product that can be greatly increased.

It is another object of the present invention to provide a method and apparatus for maintaining a tension when a workpiece is transported along a process direction using a tension holder that responds to a feed speed of the workpiece, And to provide a slate manufacturing apparatus using waste fibers which can maximize manufacturing precision.

According to an aspect of the present invention, there is provided a winder for winding a material prepared in the form of a roll and feeding the same to a path of a next process. A tension holder for keeping a transfer tension of the work material fed from the winder constant; An oven for allowing the material to be compressed to a predetermined thickness by heating and pressurizing the material transferred along the process direction via the tension holder, A first cutting machine for cutting both ends of the material passed through the oven to standardize the width size; A shaping and cooling device for shaping the workpiece having passed through the first cutting machine into a predetermined shape and shape and quenching the workpiece to improve the durability of the workpiece; And a second cutting machine for cutting the molded product having passed through the molding and cooling device to a predetermined length to standardize the length size of the finished product.

The apparatus further includes an extrusion coater for surface treatment of the workpiece, which is disposed between the oven and the molding and cooler and is transported along the process direction.

In addition, the above-mentioned winder may further comprise: a winder main body to which the workpiece is stuck; a roll shaft which is hinged to be rotatable on the winder main body for the workpiece mounting and winding in the form of a roll; And a control unit for controlling the number of revolutions of the roll shaft through detection of the conveying state of the material in a state of being disposed between the main body and the tension holder, And a conveying speed of the material is properly maintained.

The tension maintaining device includes a plurality of fixed rolls for guiding the conveyance of the work in a state where the tension holders are fixed on the upper side at regular intervals in the process progress direction, And a control unit for controlling the conveying speed of the material in accordance with the conveying speed of the material to be conveyed in the conveying direction of the material to be conveyed in the zigzag manner, And is made up of a plurality of elevating rolls that can be moved downward.

In addition, the oven may include: an oven main body having an internal temperature of 200 to 250 DEG C for firing the raw material; a pair of guide members for guiding the entry of the raw material into the oven main body, A pair of second drum rolls for guiding the advancement of the material to the outside in a state of being disposed in the advancing portion of the oven main body; In order to achieve the above object, the present invention provides a method of manufacturing a press roll, comprising: a press roll disposed at a predetermined interval along a process direction for progressive compression of a material; And a pair of pressing belts for preventing the pressing portions from contracting due to thermal deformation.

The shaping and cooling device may include a device table disposed at one side of the oven and along a direction of process progression, and a plurality of upper and lower surfaces of the material on upper and lower sides Wherein the forming roll is combined with the upper and lower surfaces of the material so as to be able to simultaneously pressurize the material so that the material can be deformed into a wave form, A pair of upper rolls and lower rolls each having a curvature, and a plurality of the rolls are arranged at regular intervals along the process direction.

In addition, the second cutting machine may include a cutting machine main body disposed along the process progress direction, a plurality of guide rolls arranged to be placed on the cutting machine main body so as to feed the work in the process advancing direction, A second cutter for cutting the material to be cut to a predetermined length; and a conveying conveyor for moving the product cut by the second cutter to a predetermined position, thereby making it possible to recover the number of sheets.

The first and second drum rolls and the pressure rolls located below the first and second drum rolls and the pressure rolls exhibit a synergistic action by hydraulic pressure or pneumatic pressure, And presses the material according to the mutual pressing with the drum roll and the press roll.

The first and second drum rolls and the first and second drum rolls located on the upper side of the first and second pressure rolls are rotatably mounted on the first and second drum rolls, A first and a second drum rolls disposed under the first and second drum rolls and the pressure rolls, and a lower pressing belt It is possible to prevent the material from being shrunk by a high-temperature heat source.

Further, the lower roll exhibits a synergistic action by hydraulic pressure or air pressure, thereby pressing the material passing through the upper and lower rolls according to the mutual pressing with the upper roll located at the upper part.

As can be clearly understood from the above description, the slate manufacturing apparatus using the waste fiber of the present invention is an apparatus for manufacturing a slate for a building material based on waste fibers such as a closed nonwoven fabric or a waste fabric, It is possible to maintain the conveying tension of the material constant by using the tension retainer, thereby making it possible to manufacture a more precise and more sophisticated construction slate.

In addition to the improvement of the quality of the product manufactured according to the above-described method, the present invention has the effect of achieving not only the uniform strength of the slate provided as the finished product but also the durability thereof.

In addition to this, it is possible to regenerate the fiber waste by recycling the construction slate, and it is possible to economize the effective use of the waste and to prevent the environmental pollution caused by the weight reduction, And plywood, it can be used as a substitute for import substitution, and it is possible to supply a large quantity of products with superior quality and various structures compared to existing products at a low price, It is a very useful invention that can make a great contribution to.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a block diagram schematically showing an apparatus for producing a slurry using waste fibers according to the present invention. FIG.
FIG. 2 is an enlarged view showing a constitutional relationship and an operating relationship of a tension retainer in an apparatus for producing a slate using waste fibers according to the present invention. FIG.
Fig. 3 is an enlarged view showing the constitutional relationship of the forming rolls provided in the molding and cooling machine in the slate producing apparatus using the waste fiber according to the present invention. Fig.
FIG. 4 is a process flow chart showing a step of manufacturing a slate using a waste fiber slurry production apparatus according to the present invention. FIG.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings so that those skilled in the art can easily carry out the present invention. First, in adding reference numerals to the constituents of the drawings, it is to be noted that the same constituents are denoted by the same reference numerals as much as possible even if they are displayed on different drawings. In the following description of the present invention, a detailed description of known functions and configurations incorporated herein will be omitted when it may make the subject matter of the present invention rather unclear.

FIG. 1 is a schematic view showing an apparatus for manufacturing a slat using waste fibers according to the present invention. FIG. 2 is a schematic view showing the configuration and operation of a tension retainer in a slate manufacturing apparatus using waste fibers according to the present invention. Fig. 3 is an enlarged view of the main part showing the constitutional relationship of the forming rolls provided in the molding and cooler in the slate manufacturing apparatus using the waste fiber according to the present invention, FIG. 1 is a process flow chart showing a step of manufacturing a slate using a fiber-based slate manufacturing apparatus.

As shown in FIG. 1, an apparatus A for producing a slurry using waste fibers according to the present invention is a slurry producing apparatus using waste fibers prepared in the form of rolls (a waste nonwoven fabric, a waste woven fabric or the like / And a feeder 1 for feeding the material to be fed to a path of the next process and a feeder 1 for feeding the material to be fed from the winder 1, The material is compressed to a predetermined thickness by heating and pressing the material transferred along the process advancing direction through the tension holder 2 and the tension holder 2 so that the material can be deformed by the next process A first cutting machine 4 for cutting both ends of the workpiece passed through the oven machine 3 to standardize the width size of the workpiece; And the durability of the molded article (molded article) is improved. And a second cutter 6 for cutting the molded product having passed through the molding and cooler 5 to a predetermined length so as to standardize the length size of the finished product .

The apparatus further includes an extrusion coater 7 between the oven 3 and the molding and cooler 5 for surface treatment such as painting or coating the material transferred along the process direction.

The winder 1 is a means for feeding the material rolled up in roll form and feeding it to the path of the next process, A roll shaft 12 which is hinged to the winder body 11 so as to be rotatable in order to mount and unwind the roll material d; and a plurality of guide rolls 13 provided on the winder main body 11 for conveying guidance of the guide rollers d.

The feed of the material d is controlled by controlling the rotation speed of the roll shaft 12 by sensing the feed state of the material d in a state of being disposed between the winder main body 11 and the tension holder 2, It is preferable to further include a detection sensor 14 necessary for keeping the speed appropriately.

On the other hand, the roll shaft 12 is axially rotated by a power unit (not shown) such as a motor, so that the roll shaft 12 can be wound in the process advancing direction as well as the material d.

The tension dampers 2 maintain the feed tension when the workpiece d fed from the winder 1 is fed to the oven machine 3 along the next process path, As shown in Fig. 2, as means for securing the supply margin through zigzag-type bypass transfer, a plurality of devices for guiding the transfer of the workpiece d in a state of being arranged and fixed on the upper side at regular intervals in the process- (21) and a material (d) arranged in the lower side at a predetermined distance from each other in the direction of process progress so as to allow the material (d) in connection with the fixed roll (21) to be conveyed in zigzag manner. Self-regulating upward and downward movements due to its own weight in accordance with the feed tension change of the workpiece d in accordance with the deviation between the feeding speed of the workpiece 3 and the feeding speed to the oven 3 A plurality of elevating rolls The.

Accordingly, the conveying tension when the material d is conveyed along the process advancing direction is maintained constant, and the conveying pattern repeatedly passes through the stationary rolls 21 and the elevating rolls 22 It is possible to replace the workpiece d with another workpiece d without stopping the work process even when the workpiece d previously mounted on the roll shaft 12 is exhausted.

The oven device 3 has a predetermined thickness by heating and compressing the workpiece d transferred along the process advancing direction via the tension holder 2 and is capable of deforming by the next process The oven main body 31 is provided with an oven main body 31 having an internal temperature maintained at 200 to 250 ° C. for plasticity of the material d, a pair of second drum rolls 32 for guiding the advance of the material d in a state of being disposed in the advancing portion of the oven main body 31, A plurality of press rolls 33 are arranged in a pair at regular intervals along the process direction for progressive compression of the material d while being combined in a pair for compressing the material d in the oven main body 31, (D) in contact with the first and second drum rolls (32, 33) and the pressing rolls (34) And a pair of pressing belts 35 for preventing the material d from being contracted by thermal deformation.

The oven main body 31 is formed long along the process direction so as to have a predetermined section, and a heating medium (heating medium / not shown) for forming a high temperature is provided in the oven main body 31.

The first drum roll 32 is formed by a high temperature heat source for heat strain of the material d flowing inside the material roll d so that the material d can be sintered Lt; / RTI >

The pressing roll 34 is rotated by a high temperature heat source in the process of passing the material d by flowing a high temperature heat source for thermal deformation of the material d like the first drum roll 32 1, the material (d), which is moved along the process direction by being disposed in the inner space of the oven main body (31) at a predetermined interval along the process progress direction, Can be gradually compressed to reduce the thickness.

Here, the first and second drum rolls 32 and 33 located under the first and second drum rolls 32 and 33 and the pressurizing rolls exhibit a synergistic action by hydraulic pressure (or air pressure) And pressurization of the material (d) is possible according to the mutual pressing with the first and second drum rolls and the pressure rolls positioned.

The pressurizing belt 35 rotates endlessly around the first and second drum rolls 32 and 33 and the first and second pressurizing rolls 34, The first and second drum rolls 32 and 33 and the first and second drum rolls 34 and 34 are located below the pressing rolls 34 and 35, And a lower pressing belt 352 that presses the lower surface of the workpiece d while rotating around the pressing rolls in an endless track so as to prevent the workpiece d from being shrunk by a high temperature heat source have.

The first cutting machine 4 cuts the edges of the material d which is jagged by heating and compressing by the first drum roll 32 and the pressing rolls 34 to standardize the width size A guide roll 41 for guiding and supporting the material d to be conveyed and disposed in close contact with the guide roll 41 at predetermined intervals along the process direction, And a cutting roll 42 that cuts both edge portions of the material d uniformly.

The shaping and cooling device 5 performs a plastic forming process on the material d heated by the oven 3 in a predetermined shape and shape and forms a formed material d A device table 51 disposed on one side of the oven 3 along the process progress direction as means for maintaining shape and improving durability of the product table 51, And a forming roll 52 which can deform the upper and lower surfaces of the molded product d-1 in a wave form by pressing the upper and lower surfaces of the molded product d-1 up and down.

As shown in Fig. 3, the forming roll 52 is combined with the upper and lower surfaces of the molded product d-1 so as to press them simultaneously, and the molded product d-1 is deformed into a wave form A pair of upper rolls 521 and a lower roll 522 having a surface curvature corresponding thereto, and a large number of them are disposed at regular intervals along the process direction.

Here, the lower rollers 522 show a synergistic action by hydraulic pressure (or pneumatic pressure), so that pressing of the workpiece d passing between them can be performed according to the mutual pressing with the upper roll 521 located on the upper side .

The second cutting machine 6 is a means for normalizing the length size by cutting the formed article d-1 formed into the shape and shape determined by the shaping and cooling machine 5 to a predetermined length, A plurality of guide rolls 62 for transferring the molded product d-1 in the process advancing direction while being disposed on the cutting machine main body 61; (Hereinafter referred to as " slate ") formed by cutting by the second cutter 63 is placed at a predetermined position And a conveying conveyor 64 for recovering the waste water.

The extrusion coater 7 is provided with means for spraying paint on the surface of the molded product (d-1) before the length size is standardized by the second cutting machine 6 and coating the surface with a coating treatment , And a T-die used for molding the composite film by extruding a molten resin (coating material and coating agent) for this purpose and laminating the molten resin (coating material and coating agent) in a molten state into a plurality of layers.

Hereinafter, the operation of the slurry production apparatus A using the waste fiber according to the present invention will be described in detail.

First, the material (d / waste fiber) provided in the form of a roll as described above is attached to the roll shaft 12 of the winder 1 and then pulled and pulled out to remove the guide rolls 13 and the tension holder 2, The fixing roll 21 and the elevating roll 22 of the oven unit 3 are passed through the first drum roll 32 of the oven unit 3. Then,

In this state, the apparatus is driven so that the material (d) is unwound by the winder (1) and the tensioner (2), the oven (3), the first cutter (4) 4) through the processing of the material (d) by performing the continuous feeding (transfer) in the process progressing direction leading to the first cutting machine (5) and the second cutting machine (6) 2) is proceeded.

The material d to be conveyed to the oven 3 along the advancing direction is conveyed by the sensor 14 disposed between the winder main body 11 and the tension holder 2, The transfer tension can be appropriately maintained by the tension holder 2 acting on the speed control and the conveyance speed thereof, that is, by moving the elevating roll 22 of the tension holder 2 up and down.

Subsequently, a workpiece d, which is unwound from the winder 1 and is conveyed past the tension holder 2, is conveyed by a first drum roll 32 disposed at the entrance of the oven 3, Deformed by the next step in the process of entering the inside of the oven main body 31 and thermally deformed again by a plurality of pressing rolls 34 arranged at a predetermined interval in the oven main body 31 At the same time, it is repeatedly pressed to a plurality of the pressing rolls 34 to be compressed to a predetermined thickness, and then advanced to the outside of the oven main body 31 by the second drum roll 33.

Thereafter, the edge portions of the material d, which are jagged by the heating and compression by the oven 3, are cut by the first cutting machine 4 so that the width size is standardized.

Next, the material d is passed through the shaping and cooling device 5 to form and shape the shaped product d-1 (d-1) defined by the forming rolls 52 of the molding and cooling device 5, ). ≪ / RTI >

Lastly, the length of the molded product d-1 is standardized by the cutting process of the second cutter 6 by the second cutter 63, thereby completing the finished product, that is, the slate d-2, And is finally recovered after the movement to the predetermined place along the conveying conveyor 64 is finished.

In addition, the extrusion coater 7 described above may be further installed between the oven 3 and the first cutter 4 as required, and the material d may be painted and coated using the extrusion coater 7 A surface treatment process may be further carried out.

According to the apparatus (A) for producing a slurry using waste fibers according to the present invention, the slurry production apparatus according to the present invention comprises the above-mentioned winder 1, tension holder 2, oven 3, first cutter 4, (D-2) for roofing finishing and the like can be easily manufactured in a one-stop process by using the second cutting machine 6 and the second cutting machine 6 to manufacture a building material based on waste fibers such as a closed nonwoven fabric or a closed fabric, The transfer tension of the workpiece d along the process direction can be kept constant by using the tension holder 2 so that more precise and precise molding of the workpiece d- ) And slitting (d-2) by cutting the molded article.

In addition, it is possible to improve the quality of a product manufactured according to the above-described method, and also to improve the durability of the slate (d-2) provided as an end product.

It will be apparent to those skilled in the art that various modifications and variations can be made in the present invention without departing from the spirit and scope of the invention as defined by the appended claims. will be. Therefore, the embodiments disclosed in the present invention and the accompanying drawings are intended to illustrate and not to limit the technical spirit of the present invention, and the scope of the technical idea of the present invention is not limited by these embodiments and the accompanying drawings . The scope of protection of the present invention should be construed according to the following claims, and all technical ideas within the scope of the claims should be construed as being included in the scope of the present invention.

A: Slate manufacturing apparatus, 1: Winder, 2: Tension retainer
3: oven machine, 4: first cutting machine, 5: forming and cooler
6: second cutting machine, 7: extrusion coating machine, 11:
12: roll shaft, 13, 41, 62: guide roll, 14: detection sensor
21: fixed roll, 22: elevating roll, 31: oven main body
32: first drum roll, 33: second drum roll, 34: pressure roll
35: pressing belt, 42: cutting roll, 51:
52: forming roll, 61: cutting machine main body, 63: second cutter
64: conveying conveyor, 341: stationary roll, 342: squeeze roll
351: upper pressing belt, 352: lower pressing belt, 521: upper roll
522: Lower roll

Claims (10)

A winder for attaching a material made of waste fibers prepared in the form of rolls and feeding the material to a path of a next process; A tension holder for keeping a transfer tension of the work material fed from the winder constant; An oven for allowing the material to be compressed to a predetermined thickness by heating and pressurizing the material transferred along the process direction via the tension holder, An extrusion coater for surface treatment of the material that has passed through the oven; A first cutting machine for cutting both ends of the material passed through the extrusion coating machine to standardize the width size; A shaping and cooling device for shaping the workpiece having passed through the first cutting machine into a predetermined shape and shape and quenching the workpiece to improve the durability of the workpiece; And a second cutting machine for cutting the molded product having passed through the molding and cooling device to a predetermined length to standardize the length size of the finished product,
Wherein the winder comprises a winder body on which the workpiece is placed, a roll shaft hinged to be rotatable on the winder body for the workpiece mounting and winding in the form of a roll, And a plurality of guide rollers provided in the main body of the winder for guiding the guide rollers, wherein the guide rollers are disposed between the winder main body and the tension retainer, The apparatus further includes a detection sensor for appropriately maintaining the conveyance speed of the material,
Wherein the tension holder comprises: a plurality of fixed rolls for guiding the conveyance of the work in a state where the tension holders are arranged at fixed intervals on the upper side with a predetermined interval along the process progress direction; And a control device for controlling the feeding speed of the material in accordance with the feeding speed of the material and the feeding speed of the material to be conveyed to the oven, And is constituted by a plurality of hoisting rolls that can be achieved,
The oven main body includes an oven main body having an internal temperature of 200 to 250 DEG C for firing the raw material and a pair of first drums for guiding the entry of the raw material into the oven main body, A pair of second drum rolls for guiding outward movement of the workpiece in a state of being disposed at an advancing portion of the main body of the oven main body and a pair of the second drum rolls for combining the workpiece in the main body of the oven main body, A plurality of pressure rolls arranged in parallel at predetermined intervals along a process direction for progressive compression of the material; and means for pressing the material in a state of being in contact with the first and second drum rolls and the pressure rolls, And a pair of pressure belts for preventing contraction due to deformation,
The shaping and cooling device includes a device table disposed on one side of the oven and along a direction of process progression, and a plurality of pressing and depressing devices disposed on the device table, Wherein the forming roll is combined with the upper and lower surfaces of the material so as to be able to simultaneously pressurize the material so that the material can be deformed into a wave form, A pair of upper rolls and a lower roll having a pair of upper and lower rolls,
The second cutting machine includes a cutting machine main body disposed along a process progress direction, a plurality of guide rolls arranged to be placed on the cutting machine main body and adapted to feed the workpiece in a process advancing direction, A second cutter for cutting the product cut by the first cutter to a predetermined length and a conveying conveyor for moving the product cut by the second cutter to a predetermined position,
The first and second drum rolls and the pressure rolls located below the first and second drum rolls and the pressure rolls exhibit a synergistic action by hydraulic pressure or air pressure so that the first and second drum rolls And pressing the material in accordance with the mutual pressing with the press roll,
The pressing belt is rotatably attached to the first and second drum rolls and the first and second drum rolls and the first and second drum rolls, A first and second drum rolls positioned below the first and second drum rolls and the pressing rolls, and a lower pressing belt configured to press the lower surface of the material while rotating around the first and second drum rolls in an endless orbit Whereby the material can be prevented from being shrunk by a heat source at a high temperature.
delete delete delete delete delete delete delete delete The method according to claim 1,
Wherein the lower roll indicates a synergistic action by hydraulic pressure or air pressure so as to pressurize the material passing through the upper and lower rolls in accordance with the mutual pressing with the upper roll located at the upper side, Manufacturing apparatus.

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