KR20240045532A - Precision compound system - Google Patents

Abstract

It relates to a precision compounding system and a precision compounding method. More specifically, the flow rate of the base material and additives is precisely controlled using a sensor or valve, passed through a static mixer, mixed using a vortex, and then filtered. It is characterized by removing foreign substances by passing them through and processing them into pellet form.

Description

Precision compound system{PRECISION COMPOUND SYSTEM}

The present invention relates to a precision compounding system and a precision compounding method. More specifically, the flow rate of the base material and additives is precisely controlled using a sensor or valve, and mixed using a vortex by passing them through a static mixer. Afterwards, it is characterized by passing it through a filter to remove foreign substances and processing it into pellet form.

Because polymers are easy to mold, have excellent chemical resistance, and are light, they are applied to various fields such as automobile parts, electrical and electronic components, building materials, and packaging materials.

Meanwhile, in order to apply such polymers to various industrial fields, appropriate additives must be added, and to facilitate processing, it is common to produce a mixture of these polymers in the form of pellets.

However, in order to apply the pellets to industrial fields, better physical properties are required. In order to improve the physical properties, the polymers and additives are mixed uniformly in the process of mixing them, and foreign substances contained in the mixture are removed more efficiently. It is very important to do.

In this regard, a method using an extruder has been widely used to mix the mixture more uniformly. However, when attempting to mix additives in powder form into the base resin, the problem of not uniform mixing often occurs. do.

In addition, various impurities, gases, or moisture generated in the process of passing through the high-temperature/high-pressure extruder are not discharged to the outside and are still dispersed in the mixture containing the polymer and additives. These are also included in the final product, the pellet, and affect its physical properties. There are many cases that lead to deterioration.

Accordingly, while researching to solve the above problem, the present inventors precisely controlled the flow rate of the base material and additives fed into the extruder using sensors or valves and passed them through a static mixer to create vortexes. When processing into pellet form by removing foreign substances by passing them through a filter, the base material and additives contained in the pellets can be uniformly mixed, and the physical properties of the pellets can be improved by removing foreign substances. By discovering that this invention was completed.

In this regard, Republic of Korea Patent No. 10-1984528 discloses a polymer coagulant mixing and dissolution system and a polymer coagulant mixing and dissolution method.

The present invention was made to solve the problems of the prior art described above, and its purpose is to provide a precision compounding system and a precision compounding method for producing pellets by mixing base materials and additives.

As a technical means for achieving the above-described technical problem, one aspect of the present invention is,

A main hopper (10) for storing base material; One or more sub-hoppers (12, 14) each storing additives added to the base material; An extruder connected to the main hopper 10 and the sub hoppers 12 and 14 to extrude the base material and additives; A static mixer (40) that mixes the base material and additives extruded through the extruder using a vortex; and a cutting unit 90 that cuts the base material and additives that have passed through the static mixer 40 and forms them into pellets.

The base material may be melted at room temperature to 1,000°C.

The base material is biodegradable resin, polyethylene (PE), polyvinyl chloride (PVC), polyethylene terephthalate (PET), polyolefin elastomer (POE), and polypropylene. , PP), polyamide (PA), polycarbonate (PC), polybutylene terephthalate (PBT), ABS resin (acrylonitrile butadiene styrene copolymer), polyacetal, polyoxymethylene It may include a polymer resin selected from the group consisting of polyoxymethylene (POM), polyetherimide, polyurethane (PU), and combinations thereof.

The additive may be in powder or liquid form.

The additive may include a material selected from the group consisting of carbon material, polymer resin, shellfish shell, mineral material, fine iron, and combinations thereof.

Valves 11, 13, and 15 are installed at the lower portions of the main hopper 10 and the sub hoppers 12 and 14, respectively, and the value input from the control unit is applied to the valves 11, 13, and 15, respectively. The flow rate of the base material or additives delivered and transferred to the extruder may be adjustable.

The precision compound system 1 includes a first filter unit 50 between the static mixer 40 and the cutting unit 90, which removes impurities contained in the base material and additives that have passed through the static mixer 40. ); And it may further include a second filter unit 70 that removes gas or moisture contained in the base material and additives that have passed through the first filter unit 50.

The first filter unit 50 may include a plate or mesh network including a plurality of holes.

The second filter unit 70 may discharge the gas or moisture to the outside using a filter formed with a fine passage through which the gas or moisture passes.

In addition, another aspect of the present invention is,

Extruding the base material and additives; mixing the extruded base material and additives using a vortex; Filtering impurities, gases or moisture contained in the base material and additives; and forming the base material and additives into pellet form.

In the precision compounding system according to the present invention as described above, valves are installed at the bottom of each hopper that stores and supplies base materials and additives, and the value input from the control unit is transmitted to the valve to transfer the base materials and additives to the extruder. Because the flow rate of the additive can be adjusted, the weight mixing ratio of the base material and additive can be precisely controlled.

In addition, the compound system mixes the mixture by forming a vortex by passing the mixture of base material and additives through a static mixer, so even when the additives are in powder form, the mixture may be mixed more uniformly. .

In addition, the compound system includes a filter unit to discharge impurities such as impurities, gases, and/or moisture contained in the mixture to the outside, so the manufactured pellets may have better physical properties.

1 is a schematic diagram showing a precision compound system according to an embodiment of the present invention.
Figure 2 is a schematic diagram showing an internal cross section of a static mixer according to an embodiment of the present invention.
Figure 3 is a schematic diagram showing a cross section of a Hall plate according to an embodiment of the present invention.
Figure 4 is a schematic diagram showing a cross section of a cutting portion according to an embodiment of the present invention.
Figure 5 is a flowchart showing a precision compounding method according to an embodiment of the present invention.

Hereinafter, the present invention will be described in more detail. However, the present invention can be implemented in various different forms, and the present invention is not limited to the embodiments described herein, and the present invention is only defined by the claims to be described later.

In addition, the terms used in the present invention are only used to describe specific embodiments and are not intended to limit the present invention. Singular expressions include plural expressions unless the context clearly dictates otherwise. In the entire specification of the present invention, 'including' a certain element means that other elements may be further included rather than excluding other elements, unless specifically stated to the contrary.

The first aspect of the present application is,

A main hopper (10) for storing base material;

One or more sub-hoppers (12, 14) each storing additives added to the base material;

An extruder connected to the main hopper 10 and the sub hoppers 12 and 14 to extrude the base material and additives;

A static mixer (40) that mixes the base material and additives extruded through the extruder using a vortex; and

A cutting unit 90 that cuts the base material and additives that have passed through the static mixer 40 and forms them into pellets;

It provides a precision compound system (1) including.

Hereinafter, the precision compound system 1 according to the first aspect of the present application will be described in detail with reference to FIGS. 1 to 4. At this time, FIG. 1 is a schematic diagram showing the precision compound system 1, FIG. 2 is a schematic diagram showing an internal cross section of the static mixer 40, FIG. 3 is a schematic diagram showing a cross section of the Hall plate 80, and FIG. 4 is a schematic diagram showing a cross section of the cutting portion 90. On the other hand, since the precision compound system 1 shown in Figures 1 to 4 is only one embodiment, it should be understood that any form of modification or replacement of components is included within the scope without impairing the scope of the present invention. .

In one embodiment of the present application, the precision compound system 1 may include a main hopper 10 that stores the base material.

In one embodiment of the present application, the main hopper 10 is a hopper that stores the base material of the present invention, and its size and/or shape are not greatly limited, but the base material can be more easily supplied to the extruder. may be desirable.

In one embodiment of the present application, the base material may include any material that melts at room temperature to 1,000°C, and may be stored in powder form and then melted due to high heat in the extruder, and may be used in the main hopper (10) It may be stored in a molten state through a heat ray or the like.

In one embodiment of the present application, the base material may be a polymer resin, for example, biodegradable resin, polyethylene (PE), polyvinyl chloride (PVC), polyethylene terephthalate ( polyethylene terephthalate (PET), polyolefin elastomer (POE), polypropylene (PP), polyamide (PA), polycarbonate (PC), polybutylene terephthalate (PBT) , ABS resin (acrylonitrile butadiene styrene copolymer), polyacetal, polyoxymethylene (POM), polyetherimide, polyurethane (PU), and combinations thereof. It may contain a polymer resin.

In one embodiment of the present application, the biodegradable resin may include a material selected from the group consisting of natural polymers, synthetic polymers, microbially produced polymers, and combinations thereof.

In one embodiment of the present application, the natural polymer is selected from the group consisting of starch, thermoplastic starch, cellulose, hemi-cellulose, chitosan, and combinations thereof. It may contain substances that are At this time, the natural polymer has somewhat lower plastic processability compared to synthetic polymers or microbially produced polymers due to its unique characteristics, but it can be relatively inexpensive.

Meanwhile, the starch may be derived from a material selected from the group consisting of potato, corn, sweet potato, arrowroot, cassava, and combinations thereof, and the material(s) is washed, finely ground, and filtered. It may be used after drying. In addition, the thermoplastic starch is a mixture of conventional starch and a thermoplastic polymer. The thermoplastic polymer is an existing general-purpose resin such as polyethylene, polystyrene, polypropylene, etc., which does not carbonize above a certain temperature and is freely deformable in shape. It may be used.

In one embodiment of the present application, the synthetic polymer refers to a polymer produced by polymerizing raw materials such as amino acids produced by fermentation technology, for example, polylactic acid (PLA), polycaprolactone (polylactic acid), -caprolactone, PCL), Diol/Diacid polybutylene succinate (PBS), polyglycolic acid (PGA), polyphosphate ester, polyphosphazene (PNF) ), poly-3-hydroxybutyrate, poly-hydroxyalkanoate (PHA), poly-hydrolybutyrate (PHB), polysaccharides and It may contain a substance selected from the group consisting of combinations thereof.

In one embodiment of the present application, some microorganisms can produce polymers in the form of nutrient storage or excrement, and the microorganism-produced polymer may refer to the polymer produced in this way. At this time, the microbially produced polymer may be, for example, polyhydroxybutyrate (PHB), which is a type of polyhydroxyalkanoate and is D-3-hydroxy-butyric acid (D-3). -hydroxy-butyric acid) may be a homopolymer connected in a straight line. Meanwhile, the microbially produced polymer as described above may have physical properties similar to existing general-purpose resins such as polypropylene.

In one embodiment of the present application, the precision compound system 1 may include at least one sub-hopper 12, 14 each storing additives added to the base material.

In one embodiment of the present application, the sub-hoppers 12 and 14 are hoppers for storing additives added to the base material of the present invention, and are shown as two in FIG. 1, but the number is not greatly limited and can be used to store additives added to the base material of the present invention. It may be installed as many additives as are added to suit the physical properties of the pellet. In addition, the size and/or shape of the sub-hoppers 12 and 14 are not greatly limited, but it may be desirable for the sub-hoppers 12 and 14 to be in a form that allows additives to be more easily supplied to the extruder.

In one embodiment of the present application, the additive may be in powder or liquid form, for example, a material selected from the group consisting of carbon material, polymer resin, shellfish shell, mineral material, fine iron, and combinations thereof. It may include. At this time, the powder form refers to a powder form and may be input into the extruder as is in powder form, and the liquid form refers to a state in which the materials are melted or in a state in which the materials are dissolved by being introduced into a liquid additive capable of dissolving the materials. It could mean something.

In one embodiment of the present application, the carbon material may include a material selected from the group consisting of graphene, carbon nanotubes (CNT), graphite, graphite, and combinations thereof.

In one embodiment of the present application, the form of the graphene may be liquid graphene or powder form graphene, and types include multilayer nanographene, nanographene plate-shaped powder, nanographene ribbon, and functional graphene. It may contain a material selected from the group consisting of pin, graphene oxide, or combinations thereof. Additionally, the graphene may be nano-graphene formed in a nano size, and therefore the size of the graphene may be less than 1 μm, preferably 50 nm or less. At this time, the graphene may preferably be liquid graphene using multilayer nanographene or graphene oxide, and the multilayer nanographene may have a two-dimensional structure of 1 to 10 layers. Meanwhile, when the graphene is liquid graphene, a liquid additive may be mixed with the graphene raw material, and the liquid additive may be a conventional additive without limitation as long as it can smoothly dissolve the graphene.

In one embodiment of the present application, the polymer resin may be the same as the type of polymer resin that can be stored in the main hopper 10, as listed above, but is different from the polymer resin stored in the main hopper 10. It may mean different polymer resins. That is, the polymer resins that can be stored in the sub hoppers 12 and 14 include biodegradable resin, polyethylene (PE), polyvinyl chloride (PVC), and polyethylene terephthalate (PET). , polyolefin elastomer (POE), polypropylene (PP), polyamide (PA), polycarbonate (PC), polybutylene terephthalate (PBT), ABS resin (acrylonitrile) Containing a polymer resin selected from the group consisting of butadiene styrene copolymer, polyacetal, polyoxymethylene (POM), polyetherimide, polyurethane (PU), and combinations thereof For example, when biodegradable resin is stored in the main hopper 10, the polymer resin that can be stored in the sub hoppers 12 and 14 includes the remaining polymer resins excluding the biodegradable resin. You can.

In one embodiment of the present application, the shellfish shell may refer to a general clam shell, for example, oyster, cockle, cockle, clam, bamboo, black clam, lily, pearl clam, conch, pearl mussel, It may refer to a material selected from the group consisting of mussels, blood clams, razor clams, seaweed, seaweed, seaweed, hijiki, agarfish, and combinations thereof, or their shells.

In one embodiment of the present application, the mineral material is not particularly limited as long as it is a mineral that is a natural material, and may include, for example, rock minerals, metal minerals, or fuel minerals.

In one embodiment of the present application, valves 11, 13, and 15 may be installed at the lower portions of the main hopper 10 and the sub hoppers 12 and 14, respectively. In addition, sensors may be installed inside the main hopper 10 and the sub hoppers 12 and 14 to measure the content of materials stored in the hopper in real time.

In one embodiment of the present application, the degree of opening and closing of the valves 11, 13, and 15 may be adjusted according to the value input from the control unit, and the flow rate of the base material and additives supplied to the extruder can be adjusted accordingly. It may be. In other words, the user can set the input amount of base material and additives to adjust the physical properties of the pellet to be manufactured in a separately installed control unit, and the valves 11, 13, and 15 receive input values and adjust the degree of opening and closing. This may determine the mixing ratio of the base material and additives. At this time, a weight measurement sensor is separately installed on the upper part of the valve (11, 13, 15) or the lower part of the hopper (10, 12, 14), so that the amount of base material or additives fed into the extruder can be measured in real time. . Therefore, the precision compound system (1) according to the present invention can have the effect of controlling the physical properties of the pellet to be manufactured very easily because it can more easily control the mixing ratio of the base material and additives fed into the extruder.

In one embodiment of the present application, the precision compound system 1 may include an extruder connected to the main hopper 10 and the sub hoppers 12 and 14 to extrude the base material and additives.

In one embodiment of the present application, the extruder may be used without limitation as long as it extrudes the input material, for example, an extruder using a screw, a mechanical extruder, or an extruder using gas, liquid, hydraulic pressure, etc. It may be. Meanwhile, referring to FIG. 1, the extrusion may be performed using an extruder using a screw 30, but this is only an example and the extrusion of the present invention is not limited thereto. Hereinafter, with reference to Figure 1, an extruder according to the present invention will be described as an example.

In one embodiment of the present application, referring to FIG. 1, the extrusion may be performed using an extruder using a screw 30, and may include a body 20 having a passage through which the mixture moves therein. You can. At this time, the upper part of one side of the extruder may be connected to the lower surface of the hopper (10, 12, 14) that accommodates the base material or additive, and the material supplied from the hopper (10, 12, 14) is of the extruder. They may be transferred to one side and extruded to the other side of the extruder. Meanwhile, the order in which the base material and additives are added to the extruder are not particularly limited and may be changed appropriately.

In one embodiment of the present application, the extruder may be installed with a vacuum pump 35 that discharges the internal pressure to the outside, and through this, the inside of the extruder is made into a vacuum, thereby reducing the physical force of the screw 30. The base material and additives may be extruded using only.

In one embodiment of the present application, the precision compound system 1 may include a static mixer 40 that mixes the base material and additives extruded through the extruder using a vortex.

In one embodiment of the present application, the base material and additives may be initially mixed with each other during the extrusion process, but may not be completely uniformly mixed, and in particular, if the additive is in powder form, the non-uniformity further increases. It may be. Therefore, the precision compound system (1) according to the present invention includes a static mixer (40) that mixes the base material and additives using a vortex as described above, thereby further mixing the base material and additives so that they are mixed more evenly. It may be.

In one embodiment of the present application, referring to FIG. 2, the static mixer 40 may have protrusions 45 formed therein, and the protrusions 45 may preferably be plural, and the static mixer 40 It may be formed alternately at the upper and lower parts of (40). That is, the base material and additives pass through the static mixer 40 and form a vortex due to the protrusions 45, through which the base material and additives may be mixed more evenly.

In one embodiment of the present application, the precision compound system 1 may include a first filter unit 50 that removes impurities contained in the base material and additives that have passed through the static mixer 40. .

In one embodiment of the present application, the first filter unit 50 is installed to remove impurities contained in the base material and additives, and may include a plate or mesh network including a plurality of holes. That is, as the base material and additives pass through the plurality of holes or mesh nets, impurities having a certain size or more may be removed. Additionally, additional fine mixing may be performed as the base material and additives pass through the first filter unit 50. That is, the first filter The unit 50 may have the effect of removing impurities contained in the base material and additives and may also have the effect of allowing them to be mixed more uniformly.

In one embodiment of the present application, the size of each of the plurality of holes and the pore size of the mesh network may be 0.0001 mm to 10 cm, and the size may be adjusted depending on the type of base material and additives added. .

In one embodiment of the present application, an impurity collection unit 60 may be installed at the lower part of the first filter unit 50, and impurities generated while passing through the first filter unit 50 are collected. It may be transferred to unit 60. At this time, in order to transport the impurities more smoothly, a suction means (not shown) may be installed in the impurity collecting unit 60.

In one embodiment of the present application, in FIG. 1, the first filter unit 50 is shown as one, but a plurality of first filter units 50 may be installed in succession, and when multiple first filter units 50 are installed, The pore sizes of the holes or mesh networks included in each first filter unit 50 may be different from each other. That is, by installing a plurality of first filter units 50, impurities having different sizes may be sequentially removed.

In one embodiment of the present application, the precision compound system 1 includes a second filter unit 70 that removes gas or moisture contained in the base material and additives that have passed through the first filter unit 50. It may be.

In one embodiment of the present application, the second filter unit 70 is installed to remove gas and/or moisture contained in the base material and additives, and uses a filter having a fine passage through which gas or moisture passes. Thus, the gas or moisture may be discharged to the outside. That is, impurities over a certain size can be removed in the first filter unit 50, but gas or moisture cannot be removed, so the second filter unit 70 may be installed. The mixture of base material and additives that has passed through (70) may have all impurities, gases, and/or moisture removed.

In one embodiment of the present application, a gas/moisture discharge unit 75 may be installed on the exterior of the second filter unit 70, and the gas and/or moisture contained in the base material and additives may be removed by vacuum. It may be discharged to the gas/water discharge unit 75 through a pump. Meanwhile, a plurality of gas/moisture discharge units 75 and vacuum pumps may be installed, and are installed along the longitudinal direction of the second filter unit 70 to remove gas and/or moisture contained in the base material and additives. It may be that it is discharged more smoothly.

In one embodiment of the present application, the precision compound system 1 may include a cutting unit 90 that cuts the base material and additives that have passed through the second filter unit 70 and forms them into pellets. there is.

In one embodiment of the present application, the molding may be performed using the hole plate 80 and the cutting portion 90 shown in FIGS. 3 and 4. At this time, one side of the hole plate 80 may be attached to the end of the second filter unit 70, and a cutting portion 90 may be attached to the other side of the hole plate 80. Specifically, the mixture of base material and additives ejected through the second filter unit 70 may be in a molten state. Therefore, the mixture in the molten state as described above may be ejected into the cutting unit 90 through the plurality of holes 85 formed in the hole plate 80 as shown in FIG. 3. At this time, the cutting unit 90 may include a cutter 92 rotating along a central axis inside, and a pellet transfer pipe 95 that supplies and discharges cooling air or cooling water inside is installed on the outer surface. It may be something that has been done. That is, the mixture ejected through the hole plate 80 may be cut and molded into pellets by the cutter 92, and the temperature is lowered by cooling air or cooling water at the same time as cutting, so it is in a molten state. The mixture may harden rapidly. Meanwhile, although cooling after cutting has been described above, this is only an example and is not limited, and cutting may be performed after cooling. In addition, the transfer of the pellets may preferably be performed using cooling air, and since the cooling air does not contain foreign substances compared to cooling water, it may be possible to produce cleaner pellets.

In one embodiment of the present application, the static mixer 40, the first filter 50, and the second filter 70 may be repeatedly formed as a set, and may be formed in multiple numbers between the extruder and the hole plate 80. If it is installed, there may be no limit to its number. Meanwhile, the mixture formed in the form of pellets as described above may then undergo a drying process and be stored in a product storage hopper (not shown).

The second aspect of the present application is,

Extruding the base material and additives;

mixing the extruded base material and additives using a vortex;

Filtering impurities, gases or moisture contained in the base material and additives; and

Molding the base material and additives into pellet form;

Provides a precision compounding method including.

Detailed description of parts overlapping with the first aspect of the present application has been omitted, but the content described in the first aspect of the present application can be applied equally even if the description is omitted in the second aspect.

Hereinafter, the precision compounding method according to the second aspect of the present application will be described in detail with reference to FIG. 5.

First, in one embodiment of the present application, the precision compounding method may include a step (S10) of extruding the base material and the additive.

In one embodiment of the present application, the base material may include any material that melts at room temperature to 1,000°C, and may be stored in powder form and then melted due to high heat in the extruder, and may be used in the main hopper (10) It may be stored in a molten state through a heat ray or the like.

In one embodiment of the present application, the base material may be a polymer resin, for example, biodegradable resin, polyethylene (PE), polyvinyl chloride (PVC), polyethylene terephthalate ( polyethylene terephthalate (PET), polyolefin elastomer (POE), polypropylene (PP), polyamide (PA), polycarbonate (PC), polybutylene terephthalate (PBT) , ABS resin (acrylonitrile butadiene styrene copolymer), polyacetal, polyoxymethylene (POM), polyetherimide, polyurethane (PU), and combinations thereof. It may contain a polymer resin.

In one embodiment of the present application, the biodegradable resin may include a material selected from the group consisting of natural polymers, synthetic polymers, microbially produced polymers, and combinations thereof.

In one embodiment of the present application, the natural polymer is selected from the group consisting of starch, thermoplastic starch, cellulose, hemi-cellulose, chitosan, and combinations thereof. It may contain substances that are At this time, the natural polymer has somewhat lower plastic processability compared to synthetic polymers or microbially produced polymers due to its unique characteristics, but it can be relatively inexpensive.

Meanwhile, the starch may be derived from a material selected from the group consisting of potato, corn, sweet potato, arrowroot, cassava, and combinations thereof, and the material(s) is washed, finely ground, and filtered. It may be used after drying. In addition, the thermoplastic starch is a mixture of conventional starch and a thermoplastic polymer. The thermoplastic polymer is an existing general-purpose resin such as polyethylene, polystyrene, polypropylene, etc., which does not carbonize above a certain temperature and is freely deformable in shape. It may be used.

In one embodiment of the present application, the synthetic polymer refers to a polymer produced by polymerizing raw materials such as amino acids produced by fermentation technology, for example, polylactic acid (PLA), polycaprolactone (polylactic acid), -caprolactone, PCL), Diol/Diacid polybutylene succinate (PBS), polyglycolic acid (PGA), polyphosphate ester, polyphosphazene (PNF) ), poly-3-hydroxybutyrate, poly-hydroxyalkanoate (PHA), poly-hydrolybutyrate (PHB), polysaccharides and It may contain a substance selected from the group consisting of combinations thereof.

In one embodiment of the present application, some microorganisms can produce polymers in the form of nutrient storage or excrement, and the microorganism-produced polymer may refer to the polymer produced in this way. At this time, the microbially produced polymer may be, for example, polyhydroxybutyrate (PHB), which is a type of polyhydroxyalkanoate and is D-3-hydroxy-butyric acid (D-3). -hydroxy-butyric acid) may be a homopolymer connected in a straight line. Meanwhile, the microbially produced polymer as described above may have physical properties similar to existing general-purpose resins such as polypropylene.

In one embodiment of the present application, the additive may be in powder or liquid form, for example, a material selected from the group consisting of carbon material, polymer resin, shellfish shell, mineral material, fine iron, and combinations thereof. It may include. At this time, the powder form refers to a powder form and may be input into the extruder as is in powder form, and the liquid form refers to a state in which the materials are melted or in a state in which the materials are dissolved by being introduced into a liquid additive capable of dissolving the materials. It could mean something.

In one embodiment of the present application, the carbon material may include a material selected from the group consisting of graphene, carbon nanotubes (CNT), graphite, graphite, and combinations thereof.

In one embodiment of the present application, the form of the graphene may be liquid graphene or powder form graphene, and types include multilayer nanographene, nanographene plate-shaped powder, nanographene ribbon, and functional graphene. It may contain a material selected from the group consisting of pin, graphene oxide, or combinations thereof. Additionally, the graphene may be nano-graphene formed in a nano size, and therefore the size of the graphene may be less than 1 μm, preferably 50 nm or less. At this time, the graphene may preferably be liquid graphene using multilayer nanographene or graphene oxide, and the multilayer nanographene may have a two-dimensional structure of 1 to 10 layers. Meanwhile, when the graphene is liquid graphene, a liquid additive may be mixed with the graphene raw material, and the liquid additive may be a conventional additive without limitation as long as it can smoothly dissolve the graphene.

In one embodiment of the present application, the polymer resin is biodegradable resin, polyethylene (PE), polyvinyl chloride (PVC), polyethylene terephthalate (PET), and polyolefin elastomer. , POE), polypropylene (PP), polyamide (PA), polycarbonate (PC), polybutylene terephthalate (PBT), ABS resin (acrylonitrile butadiene styrene copolymer), poly It may contain a polymer resin selected from the group consisting of acetal, polyoxymethylene (POM), polyetherimide, polyurethane (PU), and combinations thereof.

In one embodiment of the present application, the shellfish shell may refer to a general clam shell, for example, oyster, cockle, cockle, clam, bamboo, black clam, lily, pearl clam, conch, pearl mussel, It may refer to a material selected from the group consisting of mussels, blood clams, razor clams, seaweed, seaweed, seaweed, hijiki, agarfish, and combinations thereof, or their shells.

In one embodiment of the present application, the mineral material is not particularly limited as long as it is a mineral that is a natural material, and may include, for example, rock minerals, metal minerals, or fuel minerals.

In one embodiment of the present application, the extrusion may be performed using an extruder, and the extruder may be used without limitation as long as it extrudes the input material, for example, an extruder using a screw, a mechanical extruder Alternatively, an extruder using gas, liquid, hydraulic pressure, etc. may be used. Meanwhile, referring to FIG. 1, the extrusion may be performed using an extruder using a screw 30, but this is only an example and the extrusion of the present invention is not limited thereto. Hereinafter, with reference to Figure 1, an extruder according to the present invention will be described as an example.

In one embodiment of the present application, referring to FIG. 1, the extrusion may be performed using an extruder using a screw 30, and may include a body 20 having a passage through which the mixture moves therein. You can. At this time, the upper part of one side of the extruder may be connected to the lower surface of the hopper (10, 12, 14) that accommodates the base material or additive, and the material supplied from the hopper (10, 12, 14) is of the extruder. They may be transferred to one side and extruded to the other side of the extruder. Meanwhile, the order in which the base material and additives are added to the extruder are not particularly limited and may be changed appropriately.

In one embodiment of the present application, the extruder may be installed with a vacuum pump 35 that discharges the internal pressure to the outside, and through this, the inside of the extruder is made into a vacuum, thereby reducing the physical force of the screw 30. The base material and additives may be extruded using only.

Next, in one embodiment of the present application, the precision compounding method may include mixing the extruded base material and additives using a vortex (S20).

In one embodiment of the present application, the base material and additives may be initially mixed with each other during the extrusion process, but may not be completely uniformly mixed, and in particular, if the additive is in powder form, the non-uniformity further increases. It may be. Therefore, the precision compounding method according to the present invention further mixes the base material and additives by using a static mixer 40 that mixes the base material and additives using a vortex as described above, so that they are mixed more evenly. .

In one embodiment of the present application, referring to FIG. 2, the static mixer 40 may have protrusions 45 formed therein, and the protrusions 45 may preferably be plural, and the static mixer 40 It may be formed alternately at the upper and lower parts of (40). That is, the base material and additives pass through the static mixer 40 and form a vortex due to the protrusions 45, through which the base material and additives may be mixed more evenly.

Next, in one embodiment of the present application, the precision compounding method may include filtering impurities, gases, or moisture contained in the base material and additives (S30). At this time, the impurities may be filtered through the first filter unit 50, and the gas and/or moisture may be filtered through the second filter unit 70.

In one embodiment of the present application, the first filter unit 50 is installed to remove impurities contained in the base material and additives, and may include a plate or mesh network including a plurality of holes. That is, as the base material and additives pass through the plurality of holes or mesh nets, impurities having a certain size or more may be removed. Additionally, additional fine mixing may be performed as the base material and additives pass through the first filter unit 50. In other words, the first filter unit 50 may have the effect of removing impurities contained in the base material and additives and also have the effect of allowing them to be mixed more uniformly.

In one embodiment of the present application, the size of each of the plurality of holes and the pore size of the mesh network may be 0.0001 mm to 10 cm, and the size may be adjusted depending on the type of base material and additives added. .

In one embodiment of the present application, an impurity collection unit 60 may be installed at the lower part of the first filter unit 50, and impurities generated while passing through the first filter unit 50 are collected. It may be transferred to unit 60. At this time, in order to transport the impurities more smoothly, a suction means (not shown) may be installed in the impurity collecting unit 60.

In one embodiment of the present application, in FIG. 1, the first filter unit 50 is shown as one, but a plurality of first filter units 50 may be installed in succession, and when multiple first filter units 50 are installed, The pore sizes of the holes or mesh networks included in each first filter unit 50 may be different from each other. That is, by installing a plurality of first filter units 50, impurities having different sizes may be sequentially removed.

In one embodiment of the present application, the second filter unit 70 is installed to remove gas and/or moisture contained in the base material and additives, and uses a filter having a fine passage through which gas or moisture passes. Thus, the gas or moisture may be discharged to the outside. That is, impurities over a certain size can be removed in the first filter unit 50, but gas or moisture cannot be removed, so the second filter unit 70 may be installed. The mixture of base material and additives that has passed through (70) may have all impurities, gases, and/or moisture removed.

In one embodiment of the present application, a gas/moisture discharge unit 75 may be installed on the exterior of the second filter unit 70, and the gas and/or moisture contained in the base material and additives may be removed by vacuum. It may be discharged to the gas/water discharge unit 75 through a pump. Meanwhile, a plurality of gas/moisture discharge units 75 and vacuum pumps may be installed, and are installed along the longitudinal direction of the second filter unit 70 to remove gas and/or moisture contained in the base material and additives. It may be that it is discharged more smoothly.

Next, in one embodiment of the present application, the precision compounding method may include a step (S40) of molding the base material and additives into a pellet form.

In one embodiment of the present application, the molding may be performed using the hole plate 80 and the cutting portion 90 shown in FIGS. 3 and 4. At this time, one side of the hole plate 80 may be attached to the end of the second filter unit 70, and a cutting portion 90 may be attached to the other side of the hole plate 80. Specifically, the mixture of base material and additives ejected through the second filter unit 70 may be in a molten state. Therefore, the mixture in the molten state as described above may be ejected into the cutting unit 90 through the plurality of holes 85 formed in the hole plate 80 as shown in FIG. 3. At this time, the cutting unit 90 may include a cutter 92 rotating along a central axis inside, and a pellet transfer pipe 95 for supplying and discharging cooling air or cooling water inside is installed on the outer surface. It may be something that has been done. That is, the mixture ejected through the hole plate 80 may be cut and molded into pellets by the cutter 92, and the temperature is lowered by cooling air or cooling water at the same time as cutting, so it is in a molten state. The mixture may harden rapidly. Meanwhile, although cooling after cutting has been described above, this is only an example and is not limited, and cutting may be performed after cooling. Additionally, the transfer of the pellets may preferably be performed using cooling air, and since the cooling air does not contain foreign substances compared to cooling water, it may be possible to produce cleaner pellets.

Above, the present invention has been described in detail along with preferred embodiments with reference to the drawings, but the scope of the technical idea of the present invention is not limited to these drawings and examples. Accordingly, various modifications or equivalent embodiments may exist within the scope of the technical idea of the present invention. Therefore, the scope of rights of the technical idea according to the present invention should be interpreted in accordance with the claims, and technical ideas within the scope equivalent or equivalent thereto should be interpreted as falling within the scope of the rights of the present invention.

1: Precision compound system
10: Main hopper 11: Main valve
12: first sub hopper 13: first valve
14: second sub hopper 15: second valve
20: body 30: screw
35: Vacuum pump 40: Static mixer
45: Protrusion 50: First filter
60: impurity collection unit 70: second filter
75: Gas/moisture outlet 80: Hole plate
85: hole 90: cutting part
92: Cutter 95: Pellet transfer pipe

Claims (10)

A main hopper (10) for storing base material;
One or more sub-hoppers (12, 14) each storing additives added to the base material;
An extruder connected to the main hopper 10 and the sub hoppers 12 and 14 to extrude the base material and additives;
A static mixer (40) that mixes the base material and additives extruded through the extruder using a vortex; and
A cutting unit 90 that cuts the base material and additives that have passed through the static mixer 40 and forms them into pellets;
Precision compound system (1) including.
According to paragraph 1,
The base material is a precision compound system (1) that melts at room temperature to 1,000°C.
According to paragraph 1,
The base material is biodegradable resin, polyethylene (PE), polyvinyl chloride (PVC), polyethylene terephthalate (PET), polyolefin elastomer (POE), and polypropylene. , PP), polyamide (PA), polycarbonate (PC), polybutylene terephthalate (PBT), ABS resin (acrylonitrile butadiene styrene copolymer), polyacetal, polyoxymethylene A precision compound system (1) comprising a polymer resin selected from the group consisting of (polyoxymethylene, POM), polyetherimide, polyurethane (PU), and combinations thereof.
According to paragraph 1,
A precision compound system (1) in which the additive is in powder or liquid form.
According to paragraph 4,
The additive is a precision compound system (1) that includes a material selected from the group consisting of carbon material, polymer resin, shellfish shell, mineral material, fine iron, and combinations thereof.
According to paragraph 1,
Valves 11, 13, and 15 are installed at the lower portions of the main hopper 10 and the sub hoppers 12 and 14, respectively.
A precision compounding system (1) in which the values input from the control unit are transmitted to the valves (11, 13, and 15), respectively, so that the flow rate of the base material or additives transferred to the extruder can be adjusted.
According to paragraph 1,
The precision compound system (1) is,
Between the static mixer 40 and the cutting unit 90,
a first filter unit 50 that removes impurities contained in the base material and additives that have passed through the static mixer 40; and
a second filter unit 70 that removes gas or moisture contained in the base material and additives that have passed through the first filter unit 50;
A precision compound system (1) further comprising:
In clause 7,
The first filter unit 50 is a precision compound system (1) including a plate or mesh network including a plurality of holes.
In clause 7,
The second filter unit 70 is a precision compound system (1) that discharges the gas or moisture to the outside using a filter formed with a fine passage through which the gas or moisture passes.
Extruding the base material and additives;
mixing the extruded base material and additives using a vortex;
Filtering impurities, gases or moisture contained in the base material and additives; and
Molding the base material and additives into pellet form;
Precision compounding method including.

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