KR102146406B1 - Producing method for extrusion products - Google Patents

Abstract

The present relates to a method for producing an extrusion product, and more specifically, to a method for producing an extrusion product, the method comprising: an extrusion step of forming an extrusion product and extruding the same; a water cooling step cooling the extrusion product extruded in the extrusion step by passing the extrusion product through a water tank containing water; an air cooling step of cooling the extrusion product having passed through the water tank in the water cooling step, by exposing the extrusion product to air; a transfer step of transferring the extrusion product having passed through the air cooling step to a cutter; and a cutting step of cutting, to standards, the extrusion product transferred through the transfer step.

Description

Manufacturing method for extrusion products{Producing method for extrusion products}

The present invention relates to a method of manufacturing an extruded product, and more particularly, an extrusion step of molding and extruding an extruded product, a water cooling step of cooling the extruded product extruded in the extrusion step through a water tank containing water, In the water cooling step, an air-cooling step of exposing the extruded product passing through the water tank to air to cool it, a transfer step of transferring the extruded product passing through the air-cooling step to a cutting machine, and the extruded product transferred by the transfer step according to specifications It relates to a method of manufacturing an extruded product, characterized in that it comprises a cutting step of cutting.

In general, an extrusion device is a device for molding a product having a certain shape by adding an organic or inorganic compound to a preformed plastic material.

In addition to general extruders, these extruders are equipped with fin barrel extruders, vent extruders, silicone extruders, and other facilities, such as window seals, automobiles, structural rubber, radiators, turbochargers, hydraulic or industrial hoses or rubber hose cables such as automotive air hoses, For the manufacture of products such as wire, belt or roll lining, tire or V-belt components, fire hoses or fenders, silicone rubber products such as industrial or pharmaceutical products, blanks and preforms, various plastic materials such as synthetic manure for pre-shrink machine supply, and rubber materials. It is widely used.

However, in the case of manufacturing extruded products using such an extruder, the operator must manually cut the extruded products extruded and output from the extruder according to the specifications and then put them into a water tank to cool the cut extruded products. Therefore, there is a problem that a lot of time and manpower are required in the manufacturing process of the extruded product.

As a prior art for the manufacturing method of the above-described extruded product, the technology of the extrusion manufacturing method and apparatus for pallets using waste vinyl of Korean Patent Publication No. 10-2004-27547, and carbon of Korean Patent Publication No. 10-1301624 are contained. The technology of the manufacturing method of the aluminum alloy extruded material, the extrusion apparatus of Korean Patent Publication No. 10-1935566, and the technology of manufacturing a wood plastic composite using the same are known.

The present invention was devised to solve the problems of the prior art as described above, and provides a configuration of a method for manufacturing an extruded product capable of automating the extrusion, cooling, transfer and cutting process of the manufacturing process of an extruded product using an extruder. do.

The configuration of the method for manufacturing an extruded product of the present invention to achieve the above technical problem includes an extrusion step of molding and extruding an extruded product, and cooling the extruded product extruded in the extrusion step by passing it through a water tank containing water. The water cooling step, the air cooling step of exposing the extruded product passing through the water tank in the water cooling step to air to cool it, the conveying step of transferring the extruded product passing through the air cooling step to a cutter, and the extruded product conveyed by the conveying step It characterized in that it comprises a cutting step of cutting according to the standard.

In the manufacturing method of the extruded product of the present invention configured as described above, since the process of extruding the extruded product from the extruder, cooling, and transporting and cutting it can be performed automatically, in the manufacturing process, which had to be manually performed by a conventional worker The manufacturing time can be shortened by removing the inefficiency of, and the effect of reducing the manufacturing cost by minimizing the input manpower has been obtained.

1 is a flow chart of a method of manufacturing an extruded product of the present invention.
2 is a view showing the configuration of the extrusion apparatus of the present invention.
3 to 7 are each diagram showing an extrusion step of the method of manufacturing an extruded product of the present invention.
8 is a view showing the water cooling step of the manufacturing method of the extruded product of the present invention.
9 is a view showing the air cooling step of the manufacturing method of the extruded product of the present invention.
10 to 12 are each diagram showing a transfer step of the manufacturing method of the extruded product of the present invention.
13 to 18 are each diagram showing a cutting step of the manufacturing method of the extruded product of the present invention.
19 and 20 are each diagram showing the coating step of the manufacturing method of the extruded product of the present invention.

Hereinafter, a configuration of a method for manufacturing an extruded product of the present invention will be described with reference to the drawings.

However, the disclosed drawings are provided as an example for sufficiently transferring the spirit of the present invention to those skilled in the art. Therefore, the present invention is not limited to the drawings presented below and may be embodied in other aspects.

In addition, unless otherwise defined in terms of the terms used in the present specification, they have the meanings commonly understood by those of ordinary skill in the art to which the present invention belongs, and the gist of the present invention in the following description and accompanying drawings Detailed descriptions of known functions and configurations that may be unnecessarily obscure will be omitted.

1 is a flow chart of a method of manufacturing an extruded product of the present invention.

Referring to the drawings, the method of manufacturing an extruded product of the present invention includes an extrusion step (S1) of molding and extruding an extruded product using an extruder, and a water tank containing the extruded product extruded in the extrusion step (S1). A water cooling step (S2) of passing through and cooling, an air cooling step (S3) of exposing the extruded product passing through the water bath in the water cooling step (S2) to cool the extruded product (S3), and the extruded product passing through the air cooling step (S3) Consists of a transfer step (S4) for transferring to the cutter 80, and a cutting step (S5) for cutting the extruded product transferred by the transfer step (S4) according to the standard.

2 is a configuration diagram of an extrusion apparatus used in the method for manufacturing an extruded product of the present invention. Referring to the drawings, the extrusion apparatus 1 of the present invention includes a hopper 11 into which raw materials forming an extruded product are injected. A first extruder 10 having an extruding part 12 for discharging the extruded product through the head mold 14 while melting the raw material input from the inlet 13 formed at the lower part of the hopper 11 and extruding it forward, It includes a water cooler 30 for cooling the extruded product by passing the extruded product formed from the first extruder 10 on the frame 31 and passing through a water tank 32 containing water.

In addition, the extrusion device 1 of the present invention, when the extruded product is formed by mixing two raw materials, the extruded product to be mixed toward the head mold 14 side of the extruded part 12 of the first extruder 10 It further includes a second extruder 20 provided by molding.

The second extruder 20 melts the raw material injected from the hopper 21 into which the raw material forming the extruded product is injected and the inlet 23 formed at the lower portion of the hopper 21 and extrudes it forward, while the head mold ( It is configured to include an extruded part 22 for discharging the extruded product through 24).

The extruded portions 12 and 22 of the first extruder 10 and the second extruder 20 are formed by a screw that melts raw materials and transfers them to the front of the extruder in the longitudinal direction and a barrel that receives the screw. The screw is supplied with a solid raw material, melts and compresses the raw material under high temperature and high pressure conditions, and rotates the melted raw material and transfers it in the longitudinal direction of the extruder to form an extruded product.

Typically, the temperature of the barrel of the extruder is set approximately 20 to 30°C higher than the melting temperature of the raw material, and the melting of the raw material is related to the heat conduction in the barrel heater and the frictional heat generated between the barrel and the screw.

Each of the extruders 12 and 22 of the extruders 10 and 20 preheat and compress the raw material to heat and melt the raw material in a dense state, and use a screw in the direction of the head mold 14 and 24 in the front. While transferring, the extruded product having a shape according to the mold of the extruded portions 12 and 22 is molded.

On the other hand, the extrusion apparatus 1 of the present invention can individually operate the first extruder 10, the second extruder 20 and the water cooler 30, and the feeder 70 and the cutter 80 to be described later. It is equipped with a control panel 40 that can be.

Hereinafter, the method of manufacturing the extruded product of the present invention configured as described above will be described in detail in a modified manner.

1) Extrusion step (S1)

3 to 7 are views showing an extrusion step of the method for manufacturing an extruded product of the present invention.

Referring to the drawings, the extrusion step (S1) is a mold of the extruders 12 and 22 of the extruders 10 and 20 by melting the raw material by the first extruder 10 and the second extruder 20 described above. This is the step of discharging the extruded product having a shape.

Referring to Figure 3, the raw material injected into the hopper 11 of the first extruder 10 of the embodiment of the present invention is introduced into the extrusion unit 12 through the inlet 13 under the hopper 11, the extrusion unit The raw material input to (12) is preheated by the heat applied to the barrel.

And after the screw installed in the extrusion part 12 compresses the raw material to form a compact state, when the raw material is melted by the heat applied to the barrel, the screw transfers the melted raw material to the front head mold 14 The extruded product having the shape according to the mold of the extrusion part 12 is molded while the extrusion part 12 passes through the head mold 14 and is discharged to the outside of the extrusion part 12. do.

In addition, referring to Figure 4, the raw material injected into the hopper 21 of the second extruder 20 of the present invention is introduced into the extrusion unit 22 through the inlet 23 under the hopper 21, and extruded. The raw material injected into the part 22 is preheated by heat applied to the barrel.

And, like the first extruder 10, the screw installed in the second extruder 20 compresses the raw material to form a compact state, and when the raw material is melted by the heat applied to the barrel, the melted raw material is screwed. The extruded product having a shape according to the mold of the extruded part 22 is molded while being transported in the direction of the head mold 24 in the front. The extruded product formed by the extruded part 22 is the head mold 24 It passes through and is discharged to the outside.

Next, referring to FIG. 5, the extruded product discharged to the head mold 14 of the first extruder 10 and the extruded product discharged to the head mold 24 of the second extruder 20 according to the present invention are They are mixed together in the blender 50 to form the final shape of the extruded product.

The blender 50 is one side connected to the head mold 14 of the first extruder 10 and the other side connected to the head mold 24 of the second extruder 20, and each head mold (14,24) Each extruded product discharged from) is mixed together to form the final extruded product (E).

At this time, the mutual blending of the extruded products can be made in various ways, for example, blending in a shape in which the extruded products of the second extruder 20 are laminated on the top of the extruded products of the first extruder 10, or vice versa. , The extruded product of the first extruder 10 may be laminated on the top of the extruded product of the second extruder 20.

The blender 50 is a conventional device for blending extrudates of two different types of extruders, and in a state in which high temperature and pressure are applied to the inside of the blender housing 51, on one of the extrudates of both sides. Mutual blending is achieved by suctioning the other extrudate.

Subsequently, as shown in FIGS. 6 and 7, when the final extruded product E is formed by being intermixed in the blender 50, the formed extruded product E is discharged at the rear end of the blender 50. Enter the bracket (60).

The discharge bracket 60 performs a function of more firmly combining the mixture of the extruded product E discharged from the blender 50 by the heat and pressure applied to the inside of the discharge bracket housing 61, and the discharge bracket The extruded product (E) that has passed through 60 is introduced into the water tank 32 of the water cooler 30 in order to enter the next step, the water cooling step.

2) Water cooling step (S2)

8 is a view showing a water cooling step in the method of manufacturing an extruded product of the present invention, the water cooling step (S2) is a step of cooling the extruded product (E) formed by the extrusion step (S1) with cooling water.

In the water cooling step of the embodiment of the present invention, ordinary water is used as the cooling water, and the extruded product (E) passed through the discharge bracket 60 in the water (W) accommodated in the water tank 32 mounted on the frame 31 ) To cool the extruded product (E) heated to a high temperature to the room temperature level.

The width and length of the water tank 32 are determined according to the temperature at which the extruded product E is to be cooled, and further, if the temperature of the water to be accommodated is adjusted, even if the water tank 32 has a limited width and length, extrusion The temperature of product (E) can be cooled to a desired temperature.

The water tank 32 is a box shape with an open top, and an outlet 33 for discharging the cooled extruded product to the outside of the water tank 32 is formed at the end of the feeder 70 to be described later, and into the water tank 32 In order to smoothly transport the injected extruded product (E), a horizontal bar (34) that fixes the rods (35) with a roller (not shown) that slides the extruded product (E) on the opened upper surface of the water tank (32). To install.

3) Air cooling step (S3)

9 is a view showing the air cooling step of the manufacturing method of the extruded product of the present invention, the air cooling step (S3) is by exposing the extruded product (E) first cooled in the water cooling step (S2) to the air at regular intervals This is the step to make.

To this end, in the embodiment of the present invention, an air-cooling section was set between the outlet 33 of the water tank 32 and the inlet 72 of the inlet frame 71 of the transporter 70 to be described later, and the extruded product E When passing through the section, it is secondarily cooled while being exposed to the air, and during this process, the moisture embedded in the extruded product (E) also falls downward and is drained.

4) Transfer step (S4)

10 to 12 are diagrams showing a transfer step of the method for manufacturing an extruded product of the present invention, wherein the transfer step (S4) is a step of transferring the extruded product (E) that has passed the air cooling step (S3) to a cutter. to be.

First, referring to FIG. 10, the extruded product E that has passed through the outlet 33 of the water tank 32 is the inlet frame 71 through the inlet 72 of the inlet frame 71 of the feeder 70. It is put into the interior, and then, it enters the feeder 70 connected to the rear end of the inlet frame 71.

At this time, the entrance frame 71 is a hexahedral box having a predetermined internal space, and a door 73 that can be opened and closed on one side is installed to remove moisture from the extruded product E, such as a cloth or a rag. The absorber 78 of can be replaced.

Next, referring to FIG. 11, the extruded product (E) passing through the inlet frame 71 is moved to the cutter 80 side by the feeder 70. For this movement, the feeder 70 A lower rail 74 and an upper rail 75 are provided, and between the lower rail 74 and the upper rail 75, the extruded product E is rotated by power to transfer the extruded product to the rear end in the direction of the cutter 80. A conveyor belt 77 is laid, and the extruded product E is moved in the direction of the cutter 80 at the rear end by the conveyor belt 77 installed between the lower rail 74 and the upper rail 75.

Reference numeral 76 denotes a conveyor die 76 for mounting the lower rail 74 and the upper rail 75. Preferably, a weight meter (not shown) is attached to the feeder die 76 and the weight per unit length of the extruded product is measured when the extruded product E is transferred, and according to the measured weight per unit length of the extruded product. It is preferable that the central control unit (ECU) installed in the control panel 40 adjusts the roller speed of the feeder 70, and in this case, it is possible to automatically control the amount of extruded products relative to the input raw material, thereby uniform extrusion. You can make water.

Next, referring to FIG. 12, the extruded product (E) that has passed through the feeder 70 is discharged to the outside through the outlet 78 of the rear end of the feeder 70, and the cutting unit 83 of the cutter 80 The extruded product (E) is cut to a certain standard to be described later by being introduced into the cutting unit inlet 84 of.

The cutter 80 is a cutting unit 83 installed on the upper plate 81 provided on the lower pedestal 82, a detailed configuration will be described later.

5) Cutting step (S5)

13 to 18 are diagrams showing a cutting step of the method for manufacturing an extruded product of the present invention, wherein the cutting step (S5) cuts the extruded product (E) transferred using the cutter 80 to a predetermined standard. This is the step.

Specifically, as shown in Figure 13, the extruded product (E) input to the cutting unit inlet 84 of the cutting unit 83 installed in the cutter 80 is driven by the cutting unit outlet ( 85) is continuously moved to the rear and moves toward the rear on the base plate 87 installed on the pedestal 82.

The cutting unit 83 is a built-in blade (86a) (blade) that moves up and down by the hydraulic machine 86 installed on the top, the blade (86a) as shown in Figure 16, the cutting unit inlet 84 It is a blade that cuts the extruded product (E) placed in the corresponding section while moving up and down between the and the cutting unit outlet 85.

The control of the hydraulic machine 86 for moving the blade 86a is performed in conjunction with the operation of the stopper member 100 to be described later.

Subsequently, as shown in FIG. 14, a stopper member installed on the base plate 87 through a push module 90 installed on a pair of side rails 88 extended in the longitudinal direction on the top plate 81 It moves continuously towards (100).

The push module 90 includes a base 91 fixed on the side rail 88, an arm 92 that moves back and forth in the vertical direction of the base 87 by hydraulic pressure on the base 91, and the arm It is a module consisting of a pusher 93 that is attached to the end of 92 and pushes the extruded product (E) in the vertical direction of the platen 87 to drop it onto the collection shelf 110 to be described later.

In addition, as shown in FIG. 15, the stopper member 100 has a shaft 101 attached to the platen 87 in a longitudinal direction parallel to the platen 87, and a flat plate coupled to the shaft 101. As composed of the plate 102, it performs a function of blocking the movement of the extruded product (E) transferred to the rear on the platen (87).

Therefore, as shown in Fig. 16, when moving to the rear of the extruded product E and being caught by the plate 102 of the stopper member 100 and blocking the movement, the central control unit (ECU) of the control panel 40 is Cut the corresponding part of the extruded product (E) placed in the section between the cutting unit inlet (84) and the cutting unit outlet (85) by driving the hydraulic machine (86) of (83) to operate the blade (86a) downward. Is done.

Then, a standard unit of the extruded product E cut to the length from the plate 102 of the stopper member 100 to the portion cut by the blade 86a of the cutting unit 83 is generated.

Subsequently, as shown in FIG. 17, when the central control unit (ECU) of the control panel 40 drives the push module 90 to move the arm 92 forward in the vertical direction of the base 87 by hydraulic pressure The pusher 93 attached to the end of the arm 92 drops the extruded product E to the collection shelf 110 located at the side of the cutter 80.

Thereafter, as shown in FIG. 18, the extruded product E dropped onto the collection shelf 110 and cut into a certain length is released as a product through quality inspection and packaging process, and the cutting unit is placed on the platen 87. The extruded product E that has passed through the cutting unit outlet 85 of 83 is moved, and the cutting operation of the cutting unit 83 as described above is repeatedly performed.

On the other hand, in the manufacturing method of the extruded product of the present invention, a soft coating may be performed on the surface of the extruded product (E) after performing the air cooling step (S3) and before entering the transfer step (S4).

As an example, referring to each drawing showing the soft coating step of FIGS. 19 and 20, as shown in FIGS. 19 and 20 on the production line transferred to the transfer machine 70 by performing the air cooling step (S3) Soft coating is performed on the surface of the extruded product E by the soft coating machine 120.

The soft coating machine 120 has a hopper 121 into which the soft coating material is injected and the soft coating material injected from the hopper 121 is melted and extruded forward, and the soft coating material is injected through the head mold 123. As a soft coating machine of, the soft coating material discharged through the head mold 123 becomes a soft coating on the surface of the extruded product (E) before entering the transfer step (S4) by the coating bracket (130).

The coating bracket 130 is operated on the same principle as the blender 50 described above, and the coating bracket 130 is the surface of the extruded product (E) in a state in which high temperature and pressure are applied to the inside of the coating bracket housing 131. The coating is performed by laminating or suctioning the soft coating material in a molten state.

On the other hand, on the other hand, the extruded portion 12 of the first extruder 10 and the extruded portion 22 of the second extruder 20 are generally made of a metal material, which is not only damaged by external force, but also caused by invasion. It is necessary to prevent the occurrence of corrosion. In particular, damage to the extruded portions 12 and 22 causes fatal defects in product manufacturing, and therefore, needs to be protected more sturdily. (hereinafter, it is limited to the extruded portion 12 of the first extruder 10. However, it is revealed that the coating film according to the following embodiments can also be applied to the extruded portion 22 of the second extruder 20.)

The present invention may include a coating film provided on the outer surface of the extruded portion 12 as a means for solving the above problem. Such a coating film is provided on the outer surface of the extruded part 12, but is provided on an adhesive layer that softens at a first temperature or higher, and an intermediate layer that is softened at a second temperature higher than the first temperature, and on the intermediate layer. A protective layer softened at a third temperature higher than the second temperature, and a heating layer provided between the adhesive layer and the intermediate layer to generate heat to a minimum value of the second temperature range.

Such a coating film suppresses scratches and corrosion caused by invasion through the protective layer.In particular, by removing residual stress of the adhesive layer, it suppresses problems such as lifting and cracking due to external environments such as thermal expansion and bending, and furthermore, the intermediate layer is an adhesive layer. It eliminates the problem of peeling due to the difference in stress between the and the protective layer.

In a specific embodiment, first, the adhesive layer may include polybutylacrylate (PBA) and polymethyl methacrylate (PMMA). In order to minimize the difference in softening according to the temperature gradient, the thickness of the adhesive layer is preferably 0.020mm to 0.150mm.

Exemplarily, the adhesive layer may be obtained by heat-coating polybutyl acrylate and polymethyl methacrylate. The range of the first temperature, which is the softening temperature of the adhesive layer, is 90 to 100°C.

Next, the intermediate layer may include 200 parts by weight of a carboxylate acrylic copolymer based on 100 parts by weight of cellulose acetate butyrate. If the weight ratio is out of the above, the adhesive strength between the adhesive layer and the protective layer becomes insufficient, which may cause film peeling. The second temperature range, which is the softening temperature of this intermediate layer, is 150 to 160°C.

Next, the protective layer may include 100 parts by weight of polymethylphenylsiloxane in toluene, 100 parts by weight of silicon-containing fiber, 100 parts by weight of silicon carbide, 3 parts by weight of manganese oxide, 9 parts by weight of organosilicon-titanium compound. .

In the protective layer, if too little polymethylphenylsiloxane is included, the softening temperature decreases, and there is a concern that the softening may be softened by heat generation of the heating layer. The following compositions of the protective layer are based on 100 parts by weight of polymethylphenylsiloxane.

The silicone-containing fiber is added to impart water repellency, and the content is preferably 100 parts by weight. If it is less than 100 parts by weight, the water repellency is inferior, and even if it is used in excess of 100 parts by weight, the effect of improving the water repellency is insignificant.

Silicon carbide is added to improve the abrasion resistance, and the content is preferably 100 parts by weight. If it is less than 100 parts by weight, the abrasion resistance decreases, and even if it is used in excess of 100 parts by weight, the effect of improving the abrasion resistance is not large.

The organosilicon-titanium compound is added to improve hardness and abrasion resistance, and the content is preferably 9 parts by weight, and the surface hardness improvement is most pronounced at 9 parts by weight, and the hardness improvement effect is insignificant even if it exceeds this.

The third temperature range, which is the softening temperature of the protective layer, is 650° C. or higher, and is not softened by heat generation of the heating layer, thereby providing strong surface protection performance. Additionally, the protective layer may further include functional additives such as a water repellent agent and an anticorrosive agent.

Next, any heating layer may be used as long as it generates heat by application of electricity, and it suffices to generate heat to the minimum value of the second temperature, which is the softening temperature range of the intermediate layer. In a preferred embodiment, the heating temperature of the heating layer is 150° C., the minimum value of the second temperature in the above example, and this heating layer may include polyacetylene and iodine, and polyacetylene is a conjugated double bond in which electrons flow. Although there is no gap, since the gap can be widened by mixing different kinds of small molecules such as iodine, electrons flow, and when electricity is applied, heat is generated by electrical resistance.

In the above-described coating film, residual stresses such as compressive stress and tensile stress may be generated due to factors such as the difference between the object to be protected and the coefficient of thermal expansion, the shape of the object to be protected, and bending due to external force. In particular, the adhesive layer is completely softened while the heating layer generates heat, the intermediate layer is partially softened, and the protective layer is not softened, so the residual stress of the adhesive layer is completely removed and the intermediate layer has a small degree of softening. It plays a role of bridging. That is, the residual stress of the coating film can be effectively dispersed and relaxed while maintaining the physical and chemical properties of the protective layer.

Therefore, according to the manufacturing method of the extruded product of the present invention as described above, the process of extruding the extruded product from the extruder, cooling, transporting, and cutting is automatically performed. The manufacturing time can be shortened by removing the efficiency, and the effect of reducing the manufacturing cost by minimizing the input manpower was expressed.

* Description of the symbols for the main parts of the drawing *
1: Extrusion apparatus of the present invention
10: first extruder 11: hopper
12: extrusion part 13: inlet
14: head mold
20: second extruder
21: hopper 22: extrusion
23: slot 24: head mold
30: water cooler
31: frame 32: water tank
33: outlet 34: horizontal bar
35: rod body
40: control panel
50: blender
51: compounder housing
60: discharge bracket
61: discharge bracket housing
70: feeder
71: entrance frame 72: entrance
73: door 74: lower rail
75: upper rail 76: transfer die
77: conveyor belt 78: absorber
80: cutter
81: top plate 82: base
83: cutting unit 84: cutting unit inlet
85: cutting unit outlet 86: oil pressure machine
86a: blade 87: platen
88: side rail
90: push module
91: base 92: arm
93: Push
100: stopper member
101: axis 102: plate
110: collection shelf
120: soft coating machine
121: hopper 122: injection unit
123: head mold
130: coating bracket
131: coating bracket housing

Claims (4)

In the manufacturing method of the extruded product,
An extrusion step (S1) of molding and extruding an extruded product, and
A water cooling step (S2) of cooling the extruded product extruded in the extrusion step (S1) through a water tank containing water,
An air cooling step (S3) of exposing the extruded product passing through the water tank in the water cooling step (S2) to cool it,
A transfer step (S4) of transferring the extruded product passing through the air cooling step (S3) to a cutting machine,
Cutting step (S5) of cutting the extruded product transferred by the transfer step (S4) according to the standard; It is composed including,
The extrusion step (S1),
The raw material injected into the hopper 11 of the first extruder 10 is fed into the extrusion unit 12 through the inlet 13 under the hopper 11, and the extrusion unit 12 melts the raw material to form a head mold. While conveying in the (14) direction, an extruded product having a shape according to the mold of the extruded part 12 is molded and discharged to the outside through the head mold 14,
The raw material injected into the hopper 21 of the second extruder 20 is fed into the extrusion unit 22 through the inlet 23 under the hopper 21, and the extrusion unit 22 melts the raw material to form a head mold. While conveying in the direction of (24), an extruded product having a shape according to the mold of the extrusion portion 22 is molded and discharged to the outside through the head mold 24,
The extruded product discharged to the head mold 14 of the first extruder 10 and the extruded product discharged to the head mold 24 of the second extruder 20 are mixed together in a blender 50 to produce an extruded product. ,
A coating film is provided on the outer surface of the extruded portion 12 of the first extruder 10,
The coating layer is in contact with the outer surface of the extruded part 12 but is softened at a first temperature range, an intermediate layer provided on top of the adhesive layer and softened at a second temperature range exceeding the first temperature range, and the intermediate layer A protective layer provided on the top and softened in a third temperature range exceeding the second temperature range, and a heating layer provided between the adhesive layer and the intermediate layer to generate heat to a minimum value of the second temperature range,
The adhesive layer includes polybutyl acrylate and polymethyl methacrylate,
The intermediate layer contains 200 parts by weight of a carboxylate acrylic copolymer, based on 100 parts by weight of cellulose acetate butyrate,
The protective layer comprises 100 parts by weight of polymethylphenylsiloxane in toluene, 100 parts by weight of silicon-containing fibers, 100 parts by weight of silicon carbide, 3 parts by weight of manganese oxide, and 9 parts by weight of an organosilicon-titanium compound. Method of manufacturing extruded products.
delete The method according to claim 1,
Performing the air cooling step (S3) to perform a soft coating on the surface of the extruded product (E) by installing a soft coating machine 120 on the production line transferred to the transfer step (S4),
The soft coating machine 120 is an injection unit 122 for discharging the soft coating material to the outside through the head mold 123 while melting the soft coating material input from the hopper 121 and the soft coating material inputted from the hopper 121 and extruding it forward. ),
The soft coating material discharged through the head mold 123 is applied to the extruded product, characterized in that the soft coating is performed on the surface of the extruded product E before entering the transfer step S4 by the coating bracket 130. Manufacturing method. delete

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