KR102036898B1 - Method of making board using crosslinkable polyolefine resin - Google Patents

Method of making board using crosslinkable polyolefine resin Download PDF

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Publication number
KR102036898B1
KR102036898B1 KR1020170164131A KR20170164131A KR102036898B1 KR 102036898 B1 KR102036898 B1 KR 102036898B1 KR 1020170164131 A KR1020170164131 A KR 1020170164131A KR 20170164131 A KR20170164131 A KR 20170164131A KR 102036898 B1 KR102036898 B1 KR 102036898B1
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South Korea
Prior art keywords
extruder
resin
layer
waste
extruded
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KR1020170164131A
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Korean (ko)
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KR20190064857A (en
Inventor
김형기
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주식회사 신아케미칼
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Publication of KR20190064857A publication Critical patent/KR20190064857A/en
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/022—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor characterised by the choice of material
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29B—PREPARATION OR PRETREATMENT OF THE MATERIAL TO BE SHAPED; MAKING GRANULES OR PREFORMS; RECOVERY OF PLASTICS OR OTHER CONSTITUENTS OF WASTE MATERIAL CONTAINING PLASTICS
    • B29B13/00—Conditioning or physical treatment of the material to be shaped
    • B29B13/10—Conditioning or physical treatment of the material to be shaped by grinding, e.g. by triturating; by sieving; by filtering
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/03—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor characterised by the shape of the extruded material at extrusion
    • B29C48/07—Flat, e.g. panels
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/16—Articles comprising two or more components, e.g. co-extruded layers
    • B29C48/18—Articles comprising two or more components, e.g. co-extruded layers the components being layers
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/25—Component parts, details or accessories; Auxiliary operations
    • B29C48/30—Extrusion nozzles or dies
    • B29C48/305—Extrusion nozzles or dies having a wide opening, e.g. for forming sheets
    • B29C48/307—Extrusion nozzles or dies having a wide opening, e.g. for forming sheets specially adapted for bringing together components, e.g. melts within the die
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
    • B29K2105/00—Condition, form or state of moulded material or of the material to be shaped
    • B29K2105/26—Scrap or recycled material

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Manufacturing & Machinery (AREA)
  • Extrusion Moulding Of Plastics Or The Like (AREA)

Abstract

The present technology is intended to confirm the recyclability by utilizing the properties of materials that exhibit crosslinked polyolefin resins, such as wires or heat pipes, that are used as crosslinked resins and then transformed into thermosetting resins. The invention was completed in the process.
The technical idea of the present invention is to extrude waste synthetic resins to be recycled from the first extruder using an extruder with a built-in heater to form an inner foam layer, and in the second extruder, a new or recycled resin raw material is extruded to surround the outer foam layer. In the extrusion molding method of forming the outer resin layer to obtain a synthetic resin sheet, the waste cross-linked polyolefin resin pulverized product 40 ± 10 wt% and the blowing agent in the range of 2 ± 1.0 wt% in the waste synthetic resin raw material supplied from the central extrusion hole of the first extruder. It is contained and extruded to form an inner foam layer, the outer resin through the upper extrusion hole and the bottom extrusion hole is melt resin transferred from the second extruder extruded to the outer edge of the inner foam layer is wrapped around the inner foam layer and discharged inside The foamed layer and the outer resin layer are applied to meet the sizing process, so that the waste crosslinked polyolefin resin pulverized product in the inner foam layer is contained in the range of 40 ± 10 wt%. Synthetic resin sheet material related technology comprising a configuration that is applied so as to.

Description

Synthetic resin plate material and method for manufacturing the same, wherein the cross-linked polyolefin resin pulverized product is used to obtain an inner foam layer and the outer resin layer is wrapped {METHOD OF MAKING BOARD USING CROSSLINKABLE POLYOLEFINE RESIN}

The present invention is a technology for extruding synthetic resin plate used for building interior and exterior panels, flooring, container flooring, pedestals of logistics loading floors, flooring of aviation and ships, cargo box floorings, etc. When providing a synthetic resin sheet having a tightly wrapped configuration, crosslinked polyolefin resin pulverized products are used to obtain an inner foaming layer, and then a synthetic resin sheet having a structure in which the outer resin layer is wrapped around the outer foam layer and a manufacturing method thereof.

Cross-linked polyolefin resins are the most commonly used polymers for insulation of wires (insulation), but they are classified as thermoset plastics and have a melting temperature range of 300 ± 50 ° C, which is a commonly applied synthetic resin. Even though heat is applied to the furnace, most of the cross-linked polyolefin resins generated after being used as an outer sheath of an electric wire or a heat pipe are not buried because they are not melted and recycled.

Recently, however, many researches have been made to find ways to recycle waste cross-linked polyolefin resins in order to solve the problem of secondary environmental pollution by embedding or incineration of waste cross-linked polyolefin resins as a means to reduce the damage of global environmental pollution. In addition, there is a limitation in the processing method and throughput according to the increase of wastes from industrial sites and households, and there is no technology for continuously processing crosslinked polyolefin resin, and a technology for recycling it in terms of commercialization is urgently required.

Regarding the recycling technology of waste crosslinked polyolefin resins in Korea, Korean Patent No. 10-2012-0026035 discloses a technique for regenerating waste crosslinked high density polyolefin pipes using a supercritical fluid. 2010-0045282 describes how to recycle waste low density polyolefin foams using supercritical fluids. However, these technologies are batch-processed using batch reactors and are expensive to recycle. There is no limit.

In addition, European Patent No. 0847842B1 discloses a method of grinding / mixing and recycling waste crosslinked plastic materials using a grinder, and European Patent No. 0897783A2 uses a extruder to increase the shear stress at a high temperature to reduce waste low density polyolefin type. A method of partially decrosslinking a foam is disclosed, and European Patent No. 0897783B1 discloses a method for recycling a crosslinked polymer separated from an electric wire coating material by a shear stress under high temperature using an extruder through a decrosslinking process. In order to recycle the waste crosslinked polyolefin resin in the above-described technology, a supercritical fluid, which is a reaction solvent, is supplied to a high-pressure container to be applied to a supercritical fluid, so that the solvent and gas after the decrosslinking reaction are recovered, and the decrosslinking reaction is required. Heating apparatus for heating to the reaction temperature for In the high-pressure reactor using the extruder cylinder connected to the heating device, a supercritical fluid is used as the reaction solvent in the waste cross-linked polyolefin resin, and a process of decrosslinking and regenerating the reaction under an atmosphere of a reaction temperature of 350 to 400 ° C and a reaction pressure of 8 to 30 MPa is presented. Although it may be possible in the laboratory, in reality, the cost of recycling is so high that it is limited in practical applications.

However, as a result, it is too expensive to solve the crosslinking and recycling of the waste crosslinked polyolefin resin as described above. Currently, most of the waste crosslinked polyolefin resins generated after crosslinking with the outer resin such as electric wires or heat pipes are used. Is a situation that depends on landfill or incineration.

The present invention is completed in the process of trying to check the recyclability by utilizing the properties of the light cross-linked polyolefin resin generated after being crosslinked with an outer resin such as electric wires or heat pipes, the light weight and high strength. .

The technical idea of the present invention is to extrude waste synthetic resins to be recycled from the first extruder using an extruder with a built-in heater to form an inner foam layer, and in the second extruder, a new or recycled resin raw material is extruded to surround the outer foam layer. In the extrusion process to obtain the synthetic resin sheet forming the outer resin layer, the waste cross-linked polyolefin resin pulverized material is contained in the inner foam layer resin in the range of 40 ± 10 wt% to reduce the weight of the foam layer and increase the strength to the outer resin layer. It is an object of the present invention to provide a synthetic resin sheet having a wrapped configuration.

The technical idea disclosed to achieve the above object is to extrude the recycled waste synthetic resins from the first extruder by using an extruder with a built-in heater to form an internal foaming layer, and in the second extruder, a new or recycled resin raw material is In the extrusion molding method, which is extruded to form an outer resin layer surrounding the inner edge of the inner foam layer to obtain a synthetic resin sheet, 40 ± 10 wt% of the waste crosslinked polyolefin resin pulverized product in the waste synthetic resin material supplied from the central extrusion hole of the first extruder, foaming agent Is contained in the range of 2 ± 1.0 wt% and extruded to form an inner foaming layer, and the outer resin through the upper extrusion hole and the bottom extrusion hole is melted from the second extruder to the outer edge of the inner foaming layer After being discharged by wrapping the foam layer, the inner foam layer and the outer resin layer meet and are applied to perform a sizing process. The weight of the pulverized resin repin 40 ± 10 wt% the foam layer through a configuration adapted to be contained in a range of the invention reduce confirmed that the obtained synthetic resin plate material, increase the strength to complete.

In the application process of the present technology, it is preferable that the waste crosslinked polyolefin resin powder is applied such that the waste pulverized product of which the crosslinking process is performed to form an outer sheath of an electric wire cable or a pipe is pulverized to a size of 5 to 10.0 mm.

Therefore, the present application is an extrusion molding machine to extrude the recycled waste synthetic resins from the first extruder to form an inner foam layer, and in the second extruder, a new or recycled resin raw material is extruded to wrap the outer resin layer surrounding the outer foam layer outer shell layer In the synthetic resin sheet of the present invention, 40 ± 10 wt% of waste crosslinked polyolefin resin pulverized product and 2 ± 1.0 wt% of waste crosslinked polyolefin resin in the waste synthetic resin material supplied from the first extruder are melted in the range of 280-310 ° C. in an extrusion die. Extruded through the central extrusion hole to the molten resin to form the inner foam layer, and the new or recycled resin raw material supplied from the second extruder is extruded to the outer foam layer through the upper extrusion hole and the bottom extrusion hole of the extrusion die Extruded and wrapped around the inner foam layer and discharged, the inner foam layer and the outer resin layer meet to apply the sizing process under vacuum conditions It is an invention of the technical idea to obtain a synthetic resin sheet which ensures high strength by containing the waste crosslinked polyolefin resin pulverized product in the range of 40 ± 10 wt% in the inner foam layer forming the synthetic resin sheet.

The present invention is a material having light weight and high strength of crosslinked polyolefin resin which was crosslinked with an outer resin such as an electric wire or a heat pipe, and then buried in the ground or treated by incineration without recycling. Effectively recycled as a synthetic resin plate that is recycled to interior and exterior panels, flooring, container flooring, logistic racking base, aviation and ship flooring, and cargo tray flooring materials that require light weight and high strength. Has

Figure 1a: a plan view showing a manufacturing apparatus of the synthetic resin plate material of the present application
Figure 1b: side view of the manufacturing apparatus of the present synthetic resin plate material
2 is an exemplary view of a synthetic resin plate provided by applying the technology of the present application.

Hereinafter, by presenting a drawing of an extrusion molding machine for producing a synthetic resin sheet according to a preferred embodiment of the present invention with reference to the accompanying drawings, by presenting an extrusion molding apparatus of the configuration that the outer resin layer is the outer layer of the outer resin layer thanks to The application of the idea is described in detail.

1 is a view showing the manufacturing apparatus of the synthetic resin plate material of the present invention in a plan view in Figure 1a, Figure 1b is a view showing a side view of the manufacturing apparatus of the synthetic resin plate material of the present application in Figure 1a, to manufacture most synthetic resin plate In an embodiment that is most applied in the process, the first extruder 100 and the second extruder 200 are arranged in parallel at a position adjacent to one side of the first extruder 100, and the first extruder 100 and the second extruder are provided. Pressing part 400 for pressing and cooling the formed product to a predetermined range and the sizing (300) process and sizing to form a non-molded product extruded by using the 200 and the drawing part to pull the product past the crimping process ( The desired article can be obtained here through an extrusion apparatus having a configuration comprising 500).

Using the synthetic resin sheet manufacturing apparatus shown in Figure 1 the process of obtaining a synthetic resin plate recycled to the base material such as container flooring, the base of the logistics loading floor, flooring of aviation and ships, loading box of the van, etc. can be applied similarly to other technologies. , The feature of the present technology is that the waste synthetic resin raw material composition supplied from the central extrusion hole of the first extruder 100 is provided by waste resin crushed product is supplied to the waste resin crushed to a suitable size 50 ± 10 wt% weight ratio And 40 wt% to 10 wt% of the crosslinked waste cross-linked polyolefin resin powder, and a foaming agent such as azodicarbonamide or the like is contained in a range of 2 ± 1.0 wt% to extrude 100 wt% to form an inner foam layer. It is characterized in that the waste resin crushed product 50 ± 10 wt%, waste cross-linked polyolefin resin pulverized product 40 ± 10 wt%, foaming agent in the range of 2 ± 1.0 wt% When the raw material mixture, which is contained in a weight part ratio and forms 100 wt%, is heated to a melting point of 250 to 270 ° C. in a screw case 120 to which high heat is applied, and then sent to the head part 130, the head part 130 is again 280˜. Heated to 310 ° C temperature range is made foaming is introduced into the central extrusion hole 141 of the extrusion die mold 140 to form an internal foaming layer 10, the second extruder 200 is the first extruder 100 Regenerated resin (PE) raw material using waste resin is disposed in parallel and adjacent to one side of the raw material is introduced through the hopper 210, and the raw material soaked through the hopper 210 is a melting point in the screw case 220 to which high heat is applied. The upper position and the lower position of the central extrusion hole 141 in the extrusion die 140 of the first extruder 100 described above through the connection pipe 201 through the head portion 230 is heated to 250 ~ 270 ℃ range The molten resin is divided into an upper extrusion hole 143 and a lower extrusion hole 144 provided in the It is supplied to form the outer skin resin layer (20).

2 is an internal foaming layer 10 introduced into the central extrusion hole 141 of the extrusion die 140 is discharged from the discharge control valve 142 to form an internal foaming layer 10, the internal foaming The layer 10 is extruded and divided into an upper extrusion hole 143 and a bottom extrusion hole 144 provided at the upper position and the lower position of the central extrusion hole to control the outer resin when the outer resin layer 20 is supplied. The supply amount is controlled by the valves 143a and 144a so that the inner foaming layer 10 and the outer shell resin layer 20 meet at the discharge part 145 of the extrusion die 140 and shaping under vacuum conditions in the sizing 300 device. The work is performed.

As described above, when the internal foaming layer 10 and the outer shell resin layer 20 are shaping performed in the sizing 300 device, as shown in FIG. The hardening operation is performed, in the sizing 300 device, the suction hole 310 is long and a narrow through hole 311 is formed between the suction hole 310 and the vacuum suction part 320 and the vacuum in the direction of the arrow. The pump is applied to inhale and perform the smoothing operation.

The manufacturing process after the sizing 300 device shown in FIG. 2 will be described with reference to the drawing shown in FIG. 1B. The backing of the sizing 300 device is successively received to receive the primary shaped unformed products. At least one press roller-shaped presses 400 which are arranged at equal intervals or more may be used to press the second stage to form the press. The presses 400 may be arranged up and down and driven by a separate power. It may be composed of a pressure roller (401, 402), wherein the pressure roller (401, 402) is preferably made of a metal having excellent thermal conductivity, the compactor 400 is passed through the sizing 300 process, the first standardized fine By pressing the molded plate 30 appropriately to increase the density of the inner foam layer 10 formed in the outer layer of the resin layer 20 of the plate 30 and at the same time to form a strong bonding force and the compactors 400 In order to gradually increase the pressing force applied to the plate 30 from the front to the rear, the upper and lower pressure rollers (401, 402) has an arrangement in which the interval is adjusted to gradually increase the density of the internal components of the plate to the rear and finally When passing through the presser 400 of the stage can be obtained the finished product shown in Figure 3, the presser 400 is installed in the water cooling type cooling system 430 as shown in Figure 1a, the secondary shaping process and hardening Heat remaining in the unmolded product passing through the compactors 400 is applied to the compactors 400, and the coolant is pumped to the pressure rollers 401 and 402 that absorb the heat. While the high temperature cooling water heated by forced circulation to the heat to the outside through the heat exchanger 412 again to perform the desired heat exchange to supply the cooling water for the curing process of the unmolded product to the compactors 400 Applying configuration it is also preferred to.

In addition, while passing through the compactors 400 as described above, the second molding process, and a complete curing process of the unmolded product by the water-cooling cooling system 410 to discharge the finished product by the compacting action 400 In the final stage of the drawer 500 to draw the finished product discharged from the final end is installed in succession to draw the finished product continuously and the cutter 600 is installed in the last step to cut the produced plate to the desired standard Can be applied.

Figure 3 shows the configuration of the synthetic resin plate 30 is provided by applying the technical idea of the present invention, the synthetic resin plate material 30 of the configuration wrapped around the outer foam layer 10 outer edge to be implemented in the present invention (20) When obtaining, the synthetic resin plate material 30 to which the present technology is applied is 50 ± 10 wt% of the waste resin shredded material + 40 ± 10 wt% of the waste crosslinked polyolefin resin pulverized material supplied to the central extrusion hole of the first extruder 100. + A foaming agent is contained in the range of 2 ± 1.0 wt% to form a weight of 100 wt% to form the inner foam layer 10, the waste cross-linked polyolefin resin pulverized product (11) is contained in the range of 40 ± 10 wt% in the inner foam layer It is a technology to obtain a synthetic resin sheet that secures high strength.

As described above, one embodiment of the present invention has been described with reference to the drawings, but the present invention is not limited thereto, and conventionally known arts are well known to those skilled in the art within the scope of the claims, and various modifications may be applied. The scope of the present application shall be protected by the technical spirit of the claims.

10: inner foam layer 11: crosslinked polyolefin resin ground
20: outer shell foam layer 30: hip upper resin plate
100: first extruder 110: raw material input hopper
120: screw case 130: head
140: extrusion die mold 141: central extrusion hole
142: discharge control valve 143: upper extrusion hole
144: bottom extrusion hole 145: discharge part
200: second extruder 210: raw material input hopper
220: screw case 230: head
300: sizing 310: suction hole
320: vacuum suction unit 400: compression unit
410: cooling system 500: drawing part
600: cutter

Claims (3)

Extruded waste synthetic resins are recycled from the first extruder to form an inner foaming layer using an extruder with a built-in heater.In the second extruder, a new or regenerated raw material is extruded to cover the outer resinous layer surrounding the inner foamed layer. In the extrusion molding method of forming a synthetic resin sheet material,
The crosslinked polyolefin resin, which is a waste of the product subjected to the crosslinking process, is pulverized to a size of 5 to 10.0 mm to obtain a waste crosslinked polyolefin resin raw material pulverized product.
Among the waste synthetic resin raw materials supplied from the central extrusion hole of the first extruder, 40 ± 10 wt% of the raw crosslinked polyolefin resin pulverized product subjected to the crushing process contained a foaming agent in the range of 2 ± 1.0 wt% to form an inner foam layer. Extruded to form
The melted resin transported from the second extruder is extruded through the upper extrusion hole and the bottom extrusion hole to the outer edge of the inner foaming layer to be discharged by wrapping the inner foaming layer, and the inner foaming layer and the outer resin layer meet and size The method of manufacturing a synthetic resin sheet characterized in that it is applied to be carried out comprising a configuration applied to contain the waste cross-linked polyolefin resin pulverized product in the range of 40 ± 10 wt%. delete Extruded waste synthetic resins are recycled from the first extruder using an extruder with a built-in heater to form an internal foaming layer. In the second extruder, new or recycled resin raw materials are extruded to surround the outer foam layer with the outer resin layer. In the synthetic resin sheet of the structure,
40 ± 10 wt% of the waste crosslinked polyolefin resin pulverized product obtained by pulverizing the waste crosslinked polyolefin resin subjected to the crosslinking process in the waste synthetic resin material supplied from the first extruder to a size of 5 to 10.0 mm in the range of 2 ± 1.0 wt%. Is melted in the range of 280 ~ 310 ℃ in the extrusion die is extruded into a molten resin to form an internal foaming layer via the central extrusion hole
The new or recycled resin raw material supplied from the second extruder is extruded and extruded into the inner foam layer outer edge through the top extrusion hole and the bottom extrusion hole of the extrusion die, wrapped around the inner foam layer and discharged, and then the inner foam layer and the outer resin layer are A synthetic resin sheet provided to ensure high strength by containing 40% to 10 wt% of the waste crosslinked polyolefin resin pulverized product in the inner foam layer forming the synthetic resin sheet by performing the sizing process under the vacuum conditions.
KR1020170164131A 2017-12-01 2017-12-01 Method of making board using crosslinkable polyolefine resin KR102036898B1 (en)

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Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100645935B1 (en) * 2005-02-01 2006-11-14 김형기 Floor sheet for container and its manufacturing apparatus
KR101135630B1 (en) * 2010-02-03 2012-04-17 주식회사 피앤씨 Tree piece puts in on the center of double extrusion panel manufacturing system and method using waste plastic materials, and double extrusion panel
KR101166899B1 (en) * 2010-08-27 2012-07-19 양명주 The extrusion molding device having dice structured multi-extrusing stage and the extrusion moding method of synthetic resins plank

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