KR101970926B1 - Gas discharging device of an extruder and an injection molding machine for manufacturing of complex material - Google Patents

Abstract

The present invention relates to an extrusion and injection device for effectively discharging gas such as gas and water vapor to the outside and then extruding and forming the same to improve physical properties of a molded body; a method for producing PETYLON and a composite material by supplying PET and Nylon or a polymer resin difficult to be synthesized to the extrusion and injection device; and an extrusion and injection device for producing PETYLON and a composite material. The PETYLON and the composite material produced by the extrusion and injection device of the present invention sufficiently remove gases such as gas and water vapor contained in the PET and the nylon, or the polymer resin difficult to be synthesized in an extrusion and injection process, and then continuously operate the extrusion and injection device. In addition, since the polymer resin is not separated from each other at an interface even if a compatibilizer or a coupling agent is not added or the amount of the additive is minimized, thereby being excellent in the physical properties of the polymer resin composite material and greatly reducing manufacturing costs.

Description

Gas discharging device of an extruder and an injection molding machine for manufacturing of complex material

The present invention relates to an extrusion and injection apparatus. More specifically, gas, such as gas and water vapor generated when extruding or injecting PETYLON and composite materials prior to the operation of an injection molding machine, is provided using a venting, gas discharge pipe, and a vacuum pump in which a ceramic filter is accommodated. The present invention relates to a gas removal device for an extruder and an injection machine that enables physically forcibly mixing PET and nylon or a polymer material that is difficult to synthesize by releasing it smoothly to the outside to produce high quality PETYLON and a composite material.

Extrusion molding is a representative method for molding thermoplastics together with injection molding. Injection molding sprays the molten resin into the mold to make the product. Thus, the injection machine is equipped with a nozzle for injecting the molten resin into the mold.

The injector nozzle allows the molten resin to be fed to the injection mold while pressing the screw cylinder. Such injection machine nozzles have been proposed through Utility Model Publication No. 1990-4225 (hereinafter referred to as "quoting citation").

According to the above quotation, the injection nozzle includes a body 10, a head 20, a torpedo 30, and a venting 40, as shown in FIG. 1.

One end of the body 10 is connected to a cylinder (not shown) of the injection molding machine, and molten resin is supplied from the cylinder to the body 10. The other end of the body 10 is coupled to the head 20.

The molten resin passage 12 is formed inside the body 10, and the torpedo 30 and the venting 40 are inserted into the molten resin passage 12.

The venting ring 40 is fitted into the torpedo 30, and a plurality of protrusions 42 radially protrude from one side of the venting ring 40. When passing through the outer circumferential surface of 30, the gas component contained in the molten resin is extracted through the space between the venting 40.

In addition, the gas exhaust hole 14 is formed from the inner circumferential surface to the outer circumferential surface of the body 10, so that the extracted gas component is discharged to the outside of the body 10 through the gas exhaust hole 14.

An injection hole 22 is formed at one end of the head 20. Thus, the molten resin supplied to the molten resin passage 12 passes through the outer circumferential surface of the torpedo 30. It is fed to a mold (not shown) through the outlet 22.

However, according to the cited proposal, the gas contained in the molten resin is to be discharged when the molten resin passes the outer peripheral surface of the topedo 30, but there is no configuration that can effectively extract the gas from the molten resin .

Therefore, the molten resin injected through the injection hole 22 contains a large amount of gas components, and these gas components were forced to produce a poor product.

In addition, PET can be made into fibers by melt spinning, and can also be produced as a film by compressing the melt and stretching it after cooling. Stable to heat and light, resistant to acids, weak alkalis and oxidants. However, due to the slow crystallization, not only is it not suitable for injection molding, but also resin material made of PET, Nylon, or a difficult-to-synthesized polymer compound may be calcined with hydrolyzed gas (vaporized water) and plasticization during melting. Low molecular weight materials (oligomer generic monomers such as stearic acid and maleic anhydride) have been limited in commercializing high-functional products by hindering the mixing between high molecular weight materials and various added compounds, degrading the properties of physical properties.

In addition, since the venting 40 does not effectively remove the gas component, the moisture contained in the synthetic resin raw material must be completely removed in order to perform injection molding of a high quality product.

When the synthetic resin raw material contains moisture, gas is generated when the synthetic resin raw material is melted in the cylinder, and the gas is injected into the mold through the nozzle together with the molten resin. Damage, cracks or spots may form on the surface of the product, causing product defects.

Therefore, conventionally, the synthetic resin raw material is dried in a dryer or melted in a cylinder after completely removing moisture contained in the synthetic resin raw material using a dry hopper so that no gas is generated when melting the synthetic resin raw material as described above.

However, in the case of a composite material such as nylon resin, it is not possible to expect complete drying without vacuum drying, and even when the vacuum drying is completed, it must be continuously dried using a dry hopper when it is used in an injection molding machine. Since the structure of the injection molding machine is complicated and a separate facility for removing moisture included in the synthetic resin raw material has to be provided, there is a problem in that productivity is reduced due to excessive cost and time.

In addition, the removed gas contains a large amount of organic compounds, it was possible to pollute the air if discharged to the outside without removing these organic compounds.

Korea Utility Model Publication No. 1990-4225 "Nozzle of Injection Machine"

The present invention is a venting, gas discharge pipe and a vacuum pump in which the ceramic filter is accommodated in the gas and water vapor and the like contained in the molten resin that moves at high pressure during the extrusion or injection process when manufacturing the polymer composite material PETYLON and PETYLON composite material It is to provide an extrusion and injection device for producing PETYLON and composite materials that can be effectively extracted to the outside to produce a high-quality injection product.

As a means for solving the problems of the present invention, a hopper for mixing a molten mixed material of PET and Nylon, or a polymer resin difficult to synthesize, a cylinder formed with a molten raw material passage through which the mixed material passes, formed in any one of the cylinder And a nozzle head including a body, a discharge head for discharging the molten mixed material, and a gas discharged out of the body such as gas and water vapor inserted into and extracted from the body. It is formed in the cylinder and is characterized in that it comprises a screw for extruding while mixing and melting the molten mixed material supplied from the hopper.

In addition, in another embodiment of the present invention, the body is installed on the rear half of the cylinder based on the front end of the mixing zone screw or the raw material movement direction, or characterized in that a plurality of installed in the middle portion of the cylinder.

     In another embodiment of the present invention, the venting is a ceramic filter having a fine gap for passing gas such as a protrusion, extracted gas, and water vapor, and a gas collecting gas such as the extracted gas and water vapor into a gas collection space. It characterized in that it comprises a moving passage.

      In addition, in another embodiment of the present invention, the ceramic filter is characterized in that the ceramic, stainless steel and aluminum powder is mixed by sintering production.

      Further, in another embodiment of the present invention, the venting ring is formed between the first and second protrusions, the first and second protrusions, and passes gas such as extracted gas and water vapor, and collects the gas. Characterized in that it comprises a gas movement passage to collect into the space.

      In addition, in another embodiment of the present invention, the first protrusion is formed to protrude further by the set length than the second protrusion, characterized in that the set length is 0.001 ~ 0.100 mm.

      Further, in another embodiment of the present invention, the venting is formed by stacking a plurality of axes in the axial direction, the gas collecting space is the body, the gas, such as gas and water vapor generated in the gas filter passages and the ceramic filter of the venting Characterized in that formed between the outer side of the venting is collected.

      Further, in another embodiment of the present invention, the gas collecting space is a through hole formed between the first projection and the gas movement passage and penetrating the venting, characterized in that it is formed above and below the venting. .

      In another embodiment of the present invention, a heater is formed on the outer circumferential surface of the cylinder and the gas discharge groove and the air suction groove through which the first gas discharge pipe and the air suction port pass.

      In addition, in another embodiment of the present invention, the first gas discharge pipe and the air inlet are installed on the opposite side relative to each other relative to the distant position, that is, the axial direction and the circumferential direction of the gas removal device for the extruder, the entire passage of the venting ring It is characterized by forming a negative pressure in the.

Further, in another embodiment of the present invention, the first and second gas discharge pipe, the first and second gas discharge pipe for discharging the gas, such as gas and water trapped in the gas collecting space to the outside is connected in a right angle direction. It is done.

      In another embodiment of the present invention, a vacuum pump is provided at a downstream end of the second gas discharge pipe, and a blower is formed at an upstream end of the second gas discharge pipe.

      In another embodiment of the present invention, the discharge unit of the vacuum pump is characterized in that the device for removing the organic compound in the gas in accordance with the environmental standards of the exhaust gas is formed.

      In another embodiment of the present invention, the screw is characterized in that two.

     Further, in another embodiment of the present invention, a body in which a molten raw material passage through which a molten mixed material of PET and nylon or a polymer resin difficult to synthesize is passed, is formed, one side is coupled to the body and the other side is the molten A nozzle head having a discharge hole for flowing the mixed material, and inserted into the body to move the molten mixed material to the discharge hole, wherein the molten raw material is manufactured in a form such that the outer circumferential surface is low pressure and the inner circumferential surface can receive high pressure gas and Topedo to move the gas, such as water vapor to the outer circumferential surface and characterized in that it comprises a circular venting to discharge the gas such as the extracted gas and steam to the outside of the body.

In addition, in another embodiment of the present invention, the outer circumferential surface of the topedo is configured to further include a hill and a valley formed in a wavy ring shape,

      The hills and valleys are streamlined to prevent specific pigments from being formed, but are formed at various angles.

Further, in another embodiment of the present invention, the preferred length of the gap a between the circular venting and the topedo acid is 0.25 to 3 mm.

       In addition, in another embodiment of the present invention, the topedo is formed in a conical shape at both ends and a topedo head formed with a molten raw material moving groove on one side of the topedo, the other side includes a pedestal for fixing the circular venting Characterized in that.

Further, in another embodiment of the present invention, a plurality of circular venting is stacked in the axial direction in a donut shape, gas between the body and the circular venting, such as gas and water vapor generated in the micro-path of the circular venting is Characterized in that the gas collecting space is collected.

In addition, in another embodiment of the present invention, the upper and lower portions of the body, the first gas discharge pipe and the air inlet, the gas discharge groove and the air suction groove, characterized in that the heater is formed on the outer peripheral surface of the body.

In addition, in another embodiment of the present invention, the first gas discharge pipe and the air intake port is installed on the opposite side with respect to the most distant position, that is, the axial direction and the circumferential direction of the gas removal device for the injection machine, the entire passage of the venting ring It is characterized by forming a negative pressure in the.

In addition, in another embodiment of the present invention, the first and second gas discharge pipe for discharging the gas, such as gas and water vapor collected in the gas collection space to the outside;

It further comprises an air suction port passing through the air suction groove,

The first and second gas discharge pipes may be connected in a perpendicular direction.

In addition, in another embodiment of the present invention, the downstream end of the second gas discharge pipe is a vacuum pump; The upstream end of the second gas discharge pipe is characterized in that the blower is formed.

In another embodiment of the present invention, the discharge unit of the vacuum pump is characterized in that the device for removing the organic compound in the gas in accordance with the environmental standards of the exhaust gas is formed.

Gas and water vapor contained in a mixed material such as PET and Nylon, or difficult to synthesize a polymer resin produced by the extrusion and injection device of the present invention comprises a venting, blower and vacuum pump containing a ceramic filter By using the gas discharge pipe smoothly and effectively removed during the extrusion and injection process, it is possible to continuously operate the extrusion and injection device, as well as PET and nylon or polymers that are difficult to synthesize even without adding a compatibilizer or coupling agent or minimizing the amount of addition. Since the resin is not separated from each other at the interface, the mechanical properties of the polymer resin composite material is very excellent and the manufacturing cost can be greatly reduced.

1 is a perspective view showing an exploded view of a conventional nozzle assembly for an injection molding machine.
Figure 2 is a schematic cross-sectional view of the gas removal device for the injection molding machine.
Figure 3 is a schematic cross-sectional view of the gas removal device for an extruder and the gas removal device for an extruder according to an embodiment of the present invention.
4 and 5 are exploded views of the gas removal device for the injection molding machine.
Figure 6 is a schematic cross-sectional view of the topedo of the gas removal device for the injection molding machine.
7 is a perspective view of a topedo of the gas removal device for the injection molding machine.
8 is an exploded view of a gas removal device for an extruder used in a single screw of the present invention.
Figure 9 is an exploded view of a gas removal device for an extruder that can be mounted to a double screen of the present invention.
10 is an exploded view of a gas removal device for an extruder that can be mounted on a double screen according to an embodiment of the present invention.
Figure 11 is an exploded view of the gas removal device for an extruder that can be mounted on a double screen according to an embodiment of the present invention.

The present invention provides a method for producing PETYLON and composite materials, which is a polymer resin composite material in which PET and nylon, or polymer resins that are difficult to synthesize, are not separated from each other at the interface without minimizing or adding the compatibilizer or coupling agent, and extruding them. And a device for injecting, wherein the polymer resin composite material PETYLON and the composite material produced by the method of the present invention are composed of PET and nylon, or a polymer resin difficult to synthesize, and an anti-oxidant ultraviolet ray as necessary. Additives such as stabilizers (UV-stabilizers), stabilizers (stabilizers), flame retardants, lubricants (lubricants) can be added.

Hereinafter, with reference to the accompanying drawings, the extrusion and injection device according to the present invention and the PETYLON and the composite material and the manufacturing method produced using the extrusion and injection device will be described in detail.

In adding reference numerals to the components of each drawing, it should be noted that the same reference numerals are used to refer to the same components as much as possible, even if displayed on different drawings.

In addition, in describing the present invention, when it is determined that the detailed description of the related well-known configuration or function may obscure the gist of the present invention, the detailed description thereof will be omitted.

As shown in Figure 3, the extrusion apparatus of the present invention is a hopper 101 for accommodating a mixed material of PET and Nylon, or difficult to synthesize a polymer resin (hereinafter referred to as 'raw material'), the raw material is moved inside The cylinder 100, which is formed with a passage, is accommodated in an internal raw material movement passage of the cylinder 100, and receives raw materials from the hopper 101 while being mixed and melted and extruded into a die or a mold (not shown). Screw 102, a heater 104 is installed on the outer peripheral surface of the cylinder 100 to heat-melt the raw material, gas and water vapor generated from the raw material is installed at the end of the cylinder 100 and melted by the heater 104 It includes an extruder gas removal device 300 for discharging the gas, such as to the outside.

In FIG. 8, the extruder degassing apparatus 300 includes an extruder degassing body 301 having a molten raw material passage 303 through which molten raw material passes, and one end of the extruder degassing body ( The nozzle head 302 coupled to the 301 and the other end is a molten raw material discharge port 304 is formed to transfer the molten raw material, the gas is inserted into the extruder degassing unit body 301 and extracted gas and steam, etc. for the extruder It includes a venting 320 to discharge the degassing device body 301.

In addition, the venting 320 may be applied to an extruder using a single screw extruder having one screw 102 and a twin screw extruder having two screws 102.

Although FIG. 2 illustrates a single screw extruder having one screw 102, it is also possible to use a twin screw extruder having two screws 102. Although not shown in FIG. 2, the exhaust gas is discharged to the discharge part of the vacuum pump 251. An apparatus for removing organic compounds in the gas may be separately provided according to environmental standards of the gas.

FIG. 8 is an exploded view of the extruder degassing apparatus 300 according to an embodiment of the present invention, and the venting 320 of FIG. 8 is inserted into the extruder degassing body 301 and the inner circumferential surface thereof is a ceramic filter 323. ) Is accepted.

As shown in FIG. 8, the venting ring 320 includes a protrusion 321, and the protrusion 321 has a gas such as gas and water vapor when the venting 320 is inserted into the body 301. It provides a gas movement passage 322 to move to the collecting space (325).

The ceramic filter 323 may be manufactured by sintering a mixture of ceramic, stainless steel, and aluminum powder. In this case, a myriad of fine gaps are formed, and the raw material is melted in the process of moving the internal space of the body 301 by the rotation of the screw 102. Gases, such as gas and water vapor discharged from the raw materials, pass through the fine gaps of the ceramic filter 323 and flow into the gas movement passage 322.

Gases, such as gas and water vapor, which flowed into the gas movement passage 322 are collected in the gas collection space 325 and then discharged to the outside by the vacuum pump 251 via the first gas discharge pipe 350.

In addition, as another method for quickly discharging gas such as gas and water vapor, the gas collecting space 325 of the extruder degassing apparatus 300 is provided on the outer wall of the extruder degassing apparatus 300 so as to communicate with the outside air. The air intake 360 may be installed.

As shown in FIGS. 3 and 8, the air introduced into the gas collection space 325 through the air inlet 360 removes the outer circumferential surface of the venting 320 constituting the gas collection space 325 and the gas for the extruder. The gas moving passage formed between the venting 320 is discharged to the outside through the first and second gas discharge pipes 350 and 252 and the vacuum pump 251 through the inner wall of the apparatus body 301 at a high speed. 322 and the outer circumferential surface of the venting 320 are perpendicular to each other, so that a negative pressure is formed in the gas movement passage 322 of the venting 320 in the same principle that negative pressure is formed in the first gas discharge pipe 350. Therefore, gas such as gas and water vapor generated from the molten raw material may quickly pass through the gas movement passage 322 to be discharged to the outside.

In this case, the first gas discharge pipe 350 and the air suction port 360 are installed at opposite sides from each other based on the axial direction and the circumferential direction of the farthest position, that is, the extruder gas removal apparatus 300, and venting 320. It is desirable to form negative pressure in the entire passage.

In addition, the first gas discharge pipe 350 and the air suction hole 360 pass through the gas discharge groove 305 and the air suction groove 306 formed in the body 301, respectively.

9 is an exploded view of an extruder degassing apparatus 300 applied to a double screw extruder, the venting 320-1 is inserted into the extruder degassing body 301, and the inner circumferential surface thereof is a ceramic filter 323-1. Is accepted.

      10 is an exploded view of the gas removal apparatus 300 for an extruder according to an embodiment of the present invention, the venting 320 is the first projection 321, the second projection 323 and the gas movement passage 322 The first protrusion 321 is in contact with an outer circumferential surface of one side of the venting 320 and protrudes in a longitudinal direction, that is, in a direction parallel to a raw material moving direction of the body 301, and the second protrusion 323. ) Is protruded in the longitudinal direction in contact with the inner circumferential surface of one side of the venting 320, the first protrusion 321 is a gas such as gas and water vapor when the venting 320 is inserted into the body 301 It provides a gas movement passage 322 to move to the collecting space (325).

       In addition, the first protrusion 321 may protrude further by the set length d than the second protrusion 323, and the set length d may be a value determined by those skilled in the art. Or in this invention which uses a polymeric resin which is hard to synthesize | combine as a mixed material, it is preferable that the said set length is 0.001-0.100 mm.

       When the venting rings 320 configured as described above are in close contact with each other, the first protrusion 321 protrudes further by the set length d than the second protrusion 323, so that an outer circumferential surface on which the first protrusion 321 is formed is adjacent to the venter. On the inner circumferential surface where the rings 320 are in close contact with each other but the second protrusions 323 are formed, fine gaps are formed by the set length d. Thus, the raw material is formed inside the body 301 by the rotation of the screw 102. Gases such as gas and water vapor discharged from the molten raw material in the process of moving the space flows into the gas movement passage 322 through a fine gap formed in the tip end portion of the second protrusion 323 of the venting 320.

Gases such as gas and water vapor flowing into the gas movement passage 322 are collected in the gas collection space 325 and then discharged to the outside by the vacuum pump 251 via the first gas discharge pipe 350.

11 and 12 are exploded views of the degassing apparatus 300 for an extruder applied to the double screw extruder according to an embodiment of the present invention, venting 320-1 is inserted into the degassing body for the extruder body 301 The first protrusion is accommodated on the outer circumferential surface and the second protrusion 323-1 is accommodated on the inner circumferential surface.

In addition, as shown in FIG. 12, the gas collection space 325 penetrating the venting 320-1 is formed at two places where the first protrusion 321 and the gas movement passage 322 meet.

The gas removal apparatus 300 for the extruder configured as described above is installed at the front end of the mixing zone screw 102-1, as shown in FIG. 3, so that the molten raw material opens the inner space of the cylinder 100 by the rotation of the screw 102. It is preferable to install in a place where more pressure is generated during the movement.

In addition, the extruder degassing apparatus 300 is installed in the latter half of the cylinder 100 on the basis of the position where the gas and steam, such as steam, by the melting of the raw material actively, for example, the raw material moving direction, or the cylinder ( It is also possible to provide a plurality in the middle of 100).

The extruder degassing apparatus 300 configured as described above first accommodates a raw material mixed with PET and nylon or a polymer resin that is difficult to synthesize in the hopper 101, and then moves the internal raw material passage of the body 301, that is, the gas for the extruder. The raw material supplied to the screw 102 accommodated in the inner hole of the removal device 300 and supplied to the screw 102 is pressurized as the screw 102 rotates to move toward the gas removal device 200 for the injection molding machine. The gas contained in the raw material and melted by the heavy heater 104 are collected in the gas collecting space 325 by passing through the venting 320 of the gas removal apparatus 300 for the extruder.

In addition, as shown in Figures 4 and 5, the gas removal device 200 for an injection molding machine of the present invention is a structure in which a plurality of donut-shaped circular venting 220 is stacked in the axial direction of the topedo 210, Between the circular venting 220, a minute passage that radially passes gas such as gas and water vapor and does not pass the molten raw material is radially formed, and the molten raw material is discharged along the raw material moving passage 204 by the rotation of the screw 102. Topedo 210 is moved in the direction, and the inner hole of the circular venting 220 is provided with a passage of the molten raw material so that gas such as gas and water vapor passes through the micro-passage gas collection space (225) ) And is discharged to the outside by the vacuum pump 251 via the first and second gas discharge pipes 250 and 252.

At this time, by connecting the pipe in which the outside air flows in the middle of the first, second gas discharge pipe (250, 252) so that the gas, such as gas and water vapor discharged from the gas removal device 200 for the injection machine is discharged more quickly It is preferable.

To this end, one end of the air suction pipe 253 through which the outside air is drawn in the middle of the first and second gas discharge pipes 250 and 252 is connected, and an air filter 254 is installed at the other end of the air suction pipe 253 to the outside. It blocks the intake of foreign matter in the air, and the second gas discharge pipe 252 and the air suction pipe 253 are arranged in the same straight line and the first gas discharge pipe 250 is connected in a right direction.

The gas discharge system configured as described above forms a negative pressure in the first gas discharge pipe 250 based on Bernoulli's theorem while the outside air passes through the air suction pipe 253 and the second gas discharge pipe 252 at high speed. Therefore, gas such as gas and water vapor collected in the gas collecting space 225 can be quickly discharged to the outside.

In FIG. 2, a vacuum pump 251 is installed at a downstream end of the second gas discharge pipe 252 to discharge gas such as gas and water vapor, but instead of installing the vacuum pump 251, an air suction pipe ( 253) It is also possible to install a blower in the upstream end, the negative pressure is formed in the first gas discharge pipe 250 in the same principle by the blower of the blower gas and water vapor in the gas collecting space 225, etc. The gas can be quickly discharged to the outside, and in this case, the blower is not in direct contact with gas such as gas and water vapor, and thus there is an advantage of preventing the blower from being corroded by gas such as gas and water vapor.

In addition, as another method for quickly discharging gas such as gas and water vapor, the gas collecting space 225 of the gas removing apparatus 200 for the injection molding machine is provided on the outer wall of the gas removing apparatus 200 for the injection molding machine so as to communicate with the outside air. An air intake 260 may be installed.

The first gas discharge pipe 250 and the air suction port 260 pass through the gas discharge groove 205 and the air suction groove 206 formed in the body 201, respectively.

At this time, the first gas discharge pipe 250 and the air inlet 260 is installed on the opposite side with respect to the most distant position, that is, the axial direction and the circumferential direction of the gas removal device 200 for the injection machine circular venting 220 Negative pressure is preferably formed in the entire micro passage of

The air introduced into the gas collection space 225 through the air suction port 260 is rapidly connected between the outer circumferential surface of the circular venting 220 constituting the gas collection space 225 and the inner wall of the gas removal apparatus body 201 for the injection molding machine. Passed through and discharged to the outside through the first and second gas discharge pipes 250 and 252 and the vacuum pump 251, the micro-path formed between the circular venting 220 and the outer peripheral surface of the circular venting 220 is perpendicular to each other Since the negative pressure is formed in the fine passage of the circular venting 220 in the same principle as the negative pressure is formed in the first gas discharge pipe 250, the gas such as gas and water vapor generated from the molten raw material is a fine passage It can be quickly passed through and discharged to the outside.

As the vacuum pump 251 operates, external air passes through the air filter 254, the air suction pipe 253, the second gas discharge pipe 252, and the vacuum pump 251 to be discharged to the outside again. 253) and the first gas discharge pipe (250, 350) and the first gas discharge pipe (250, 350) connected at right angles to the pipe pressure is lowered as air passes through the second gas discharge pipe 252 at a high speed; The low pressure also acts on the gas collection spaces 225 and 325 connected to the.

Therefore, the gas and the water vapor collected in the gas collection spaces 225 and 325 are quickly discharged to the outside via the first gas discharge pipe 250 and 350, the second gas discharge pipe 252 and the vacuum pump 251, and the gas for the injection machine. Gas and water vapor generated from the molten raw material are applied to the gas and water vapor passing through the venting devices 220 and 320 of the removal device 200 and the gas removal device 300 for the extruder 300 to remove the gas for the injection machine ( 200 and the venting (220, 320) of the gas removal device 300 for the extruder can pass more smoothly.

In addition, the present invention is to prepare a raw material by mixing a polymer resin such as nylon or polymer material difficult to synthesize PET, heating and melting the raw material and extruding, gas and water vapor in the molten raw material during the extrusion process Discharging the gas to the outside through the extruder degassing apparatus 300, injecting the raw material passed through the extruder degassing apparatus, and forming a molten raw material from which gases such as gas and water vapor have been removed. It includes, and to discharge the gas such as gas and steam remaining in the raw material again through the gas removal device 200 for the injection machine to the outside, the injection device gas removal device 200 is a donut-shaped circular venting ( A plurality of 220 are stacked and between the adjacent circular venting 220 is formed a fine passage through which gas such as gas and water vapor passes, the circular venting 220 The gas collecting space 225 is formed on the main surface to communicate with the circular venting 220 and the inner hole of the circular venting 220 accommodates the torpedo 210 which provides a movement passage of the molten raw material. It provides a method for producing PETYLON and composite materials.

The injector degassing apparatus 200 is an injector degassing apparatus body 201 having a molten raw material passage 203 through which molten raw material passes, and one surface is coupled to the injector degassing body 201. And the opposite side is inserted into the nozzle head 202, the degassing device body 201 for injection molding machine for removing the injection gas degassing device 204 for flowing the molten raw material and moves the molten raw material to the discharge port 204 The molten raw material is produced in a form in which the outer circumferential surface is low pressure and the inner circumferential surface can receive a high pressure, so that gas such as gas and water vapor moves to the outer circumferential surface, and the gas such as the extracted gas and water vapor is injected into the injection molding machine. It includes a circular venting 220 to be discharged to the outside of the gas removal device body 201.

Both ends of the torpedo 210 are formed in a conical shape, one side includes a topedo head 212 to be supported by the body 201, the torpedo head 212 is a molten raw material topedo 210 And a molten raw material moving groove 213 to guide the flow between the circular venting 220.

In addition, the circular venting 220 is formed with a fine passage 221 through which gases such as gas and water vapor generated from the molten raw material can move to the gas collection space 225, the size of the fine passage 221 It can be set as the value judged by a person skilled in the art as preferable.

When the circular venting 220 configured as described above is in close contact with each other, the adjacent circular venting 220 is in close contact with each other, but gas such as gas and water vapor passes through the fine passage 221 processed on the surface of the circular venting 220. The molten raw material is moved to the collecting space 225, and the molten raw material is injected and molded into a die or a mold through an injection machine through the discharge port 204 by the pressure of the screw 102.

As shown in Figure 5 and 6, the topedo 210 is formed at both ends of the conical shape and the pedestal 219 is fixed to one side of the torpedo 210 to fix the circular venting 220 The other side includes a molten raw material moving groove 213 including a torpedo head 212 to which the molten raw material moves.

The topedo 210 and the topedo head 212 may be manufactured and assembled, respectively, or the topedo 210 and the topedo head 212 may be integrally manufactured.

On the outer circumferential surface of the topedo 210, the acid 215 and the valley 214 in the shape of a wavy ring in the moving direction of the molten raw material are processed, which may be subjected to low pressure on the outer circumferential surface and high pressure on the inner circumferential surface. It makes it easy to move gas such as gas and water vapor to the outer circumferential surface. In addition, the wavy shape of the torpedo 210 may maximize the mixing effect of the material.

Accordingly, the molten raw material supplied to the molten raw material passage 203 passes through the molten raw material moving groove 213 to form a plurality of wavy ring-shaped acids 215 and valleys 214 formed on the outer circumferential surface of the torpedo 210. It is moved beyond the molten material discharge port 204 direction.

The preferred length of the gap a between the circular venting 220 and the topedo acid 215 may be 0.25-0.3 mm.

The molten raw material is repeated by the number of the toppedo acids 215 with a thickness as much as a gap (a) in the process of moving over the various wavy ring-shaped acids 215 formed on the outer circumferential surface of the torpedo 210. It is spread several times thinly and evenly, and in this process gas such as gas and water vapor contained in the molten raw material can be separated and discharged more effectively.

In addition, the plurality of wavy ring-shaped acids 215 and valleys 214 formed on the outer circumferential surface of the torpedo 210 may be streamlined to prevent specific pigments from accumulating at various angles.

The molten raw material is moved to the discharge port 204 along a plurality of wavy ring-shaped acids 215 formed on the outer circumferential surface of the torpedo 210 and then injected into the die or the mold through the discharge port 204.

Therefore, the molten raw material transferred to the gas removing apparatus 200 for the injection molding machine is injected and molded into a die or a mold through the discharge port 204 of the gas removing apparatus 200 for the injection molding machine, and a pellet manufacturing apparatus is mounted at the exit of the PETYLON. And composite pellets or injection into molds to produce injection products, and removes gases such as gas and water vapor from molten raw materials to improve interfacial adhesion between PET and nylon or polymer resins that are difficult to synthesize Mechanical properties of the resin composite material is improved.

In addition, PETYLON is a stabilized pellet form by making a mixture of PET and nylon or a polymer material difficult to synthesize in a liquid state and then physically forcibly mixed by using the gas removal device 200 for the injection molding machine. It is made of a resin of the gas, the device is passed through the circular venting of the gas removal device 200 for liquefied state due to the fine-sized pores and multi-layered pore structure made in the circular venting, vaporized material and hydrolyzed water and Low molecular materials are discharged to make polymer composites with excellent mechanical properties.

Table 1 below is a test result of the injection test after compounding into PET-G and PET-G + Nylon 9: 1 using the extrusion and injection device.

PET-G transparent PET-G Transparent + Nylon PET-G white PET-G White + Nylon The tensile strength 4.74Kg / mm² 5.18Kg / mm² 4.99Kg / mm² 5.22Kg / mm² Elongation 24.2% 56.5% 20.5% 44.5%

As can be seen from the results in Table 1, it can be seen that there is an increase in tensile strength and elongation as a result of extruding and injecting the PET and nylon that are difficult to synthesize.

The attached table shows the superiority of the PETYLON composite material produced by the present invention "degassing device for injection machine" as a result obtained by requesting "Korea Certified Testing Institute Co., Ltd.".

Table 1-1 Sample Photos

Table 2-1 shows PETYLON composites made of PET and Nylon.

Table 2-2 shows PETYLON composites made of PET and Surlyn.

Table 2-3 shows the material discharged by multistage circular venting during the production of PETYLON and composites.

The table below shows experimental results showing that Solvay data removed up to 0.0002% of hydrolyzed water and gas.

100: cylinder 101: hopper
102-1: mixing zone screw 102: screw
104: heater 200: gas removal device for the injection molding machine
201: body 202: nozzle head
203: molten raw material passage 204: discharge port
205: gas discharge groove 206: air suction groove
210: topedo 212: topedo head
213: molten raw material moving groove 214: topedo goal
215: Mount Topedo 219: pedestal
220: circular venting 221: fine passage
225: gas collection space 230: heater
250: first gas discharge pipe 251: vacuum pump
252: second gas discharge pipe 253: air suction pipe
254: air filter 260: air intake
300: gas removal device for extruder 301: body
302: nozzle head 303: molten raw material passage
304: discharge port 305: gas discharge groove
306: air suction groove 320, 320-1: venting
321: protrusion (first protrusion) 322: gas flow passage
323, 323-1: ceramic filter (second projection) 325: gas collection space
350: first gas discharge pipe 360: air intake

Claims (6)

A hopper for mixing the molten mixed material of the polymer resin;
A cylinder having a molten raw material passage through which the mixed material passes;
A body formed in any one of said cylinders;
A nozzle head having a discharge port for discharging the molten mixed material;
Venting is inserted into the body and venting the gas, such as extracted gas and water vapor to the outside of the body;
The topedo which is inserted in the body and moves the molten mixed material to the discharge port, the molten raw material is produced in a form that can receive a low pressure, the inner peripheral surface high pressure on the outer peripheral surface to move the gas, such as gas and steam to the outer peripheral surface ;
The outer circumferential surface of the topedo is further comprised of a mountain and valley formed in a wavy ring shape,
The acid and valleys are streamlined to prevent specific pigments from being formed at various angles,
The topedo is formed in a conical shape at both ends and a topedo head having a molten raw material moving groove formed at one side of the topedo;
Extruder and injector gas removal apparatus for producing a composite material, characterized in that it comprises a; a pedestal for fixing the circular venting on the other side.
The method of claim 1,
The venting ring is formed by stacking a plurality of axial directions, and the venting ring includes a first protrusion and a second protrusion;
The second protrusion is a ceramic filter formed with a fine gap for passing gas such as extracted gas and water vapor,
A gas movement passage formed between the first protrusion and the second protrusion to pass a gas such as extracted gas and water vapor and collect the gas into a gas collection space;
Two screws which are formed inside the cylinder and are supplied with the molten mixed material from the hopper and extruded while being mixed and melted;
The gas collecting space is a through hole formed between the first protrusion and the gas movement passage to penetrate the venting, and is formed above and below the venting.
The ceramic filter is a gas removal device for extruders and injectors for producing a composite material, characterized in that sintering is produced by mixing ceramic, stainless steel and aluminum powder.
According to claim 2, wherein the preferred length of the gap (a) between the venting and the torpedo acid is 0.25 ~ 3 mm gas removal device for the extruder and injection machine for producing a composite material.
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