WO2015098428A1 - 透明樹脂組成物の製造方法 - Google Patents
透明樹脂組成物の製造方法 Download PDFInfo
- Publication number
- WO2015098428A1 WO2015098428A1 PCT/JP2014/081584 JP2014081584W WO2015098428A1 WO 2015098428 A1 WO2015098428 A1 WO 2015098428A1 JP 2014081584 W JP2014081584 W JP 2014081584W WO 2015098428 A1 WO2015098428 A1 WO 2015098428A1
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- WIPO (PCT)
- Prior art keywords
- screw
- resin
- resin composition
- screw extruder
- transparent resin
- Prior art date
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- 239000011342 resin composition Substances 0.000 title claims abstract description 43
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 37
- 229920005989 resin Polymers 0.000 claims abstract description 67
- 239000011347 resin Substances 0.000 claims abstract description 67
- 239000004431 polycarbonate resin Substances 0.000 claims abstract description 51
- 229920005668 polycarbonate resin Polymers 0.000 claims abstract description 51
- 239000004925 Acrylic resin Substances 0.000 claims abstract description 48
- 229920000178 Acrylic resin Polymers 0.000 claims abstract description 48
- 238000010008 shearing Methods 0.000 claims abstract description 37
- 238000004898 kneading Methods 0.000 claims abstract description 9
- 230000002093 peripheral effect Effects 0.000 claims description 20
- 239000000155 melt Substances 0.000 claims description 6
- 238000000034 method Methods 0.000 claims description 6
- 238000001125 extrusion Methods 0.000 claims description 4
- 230000010006 flight Effects 0.000 claims description 3
- 239000000203 mixture Substances 0.000 claims description 2
- 239000002994 raw material Substances 0.000 description 27
- 230000000052 comparative effect Effects 0.000 description 5
- 238000002156 mixing Methods 0.000 description 5
- 239000000463 material Substances 0.000 description 4
- 238000010438 heat treatment Methods 0.000 description 3
- 238000002844 melting Methods 0.000 description 3
- 230000008018 melting Effects 0.000 description 3
- 239000000113 methacrylic resin Substances 0.000 description 3
- 238000000465 moulding Methods 0.000 description 3
- 239000012071 phase Substances 0.000 description 3
- 238000007493 shaping process Methods 0.000 description 3
- 239000007790 solid phase Substances 0.000 description 2
- 229920005497 Acrypet® Polymers 0.000 description 1
- 239000004419 Panlite Substances 0.000 description 1
- 229920000297 Rayon Polymers 0.000 description 1
- 230000006750 UV protection Effects 0.000 description 1
- 230000002159 abnormal effect Effects 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 239000007791 liquid phase Substances 0.000 description 1
- 239000011159 matrix material Substances 0.000 description 1
- 229920000515 polycarbonate Polymers 0.000 description 1
- 239000004417 polycarbonate Substances 0.000 description 1
- 238000012827 research and development Methods 0.000 description 1
- 238000009751 slip forming Methods 0.000 description 1
Images
Classifications
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- 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
- B29B7/00—Mixing; Kneading
- B29B7/30—Mixing; Kneading continuous, with mechanical mixing or kneading devices
- B29B7/34—Mixing; Kneading continuous, with mechanical mixing or kneading devices with movable mixing or kneading devices
- B29B7/38—Mixing; Kneading continuous, with mechanical mixing or kneading devices with movable mixing or kneading devices rotary
- B29B7/40—Mixing; Kneading continuous, with mechanical mixing or kneading devices with movable mixing or kneading devices rotary with single shaft
- B29B7/42—Mixing; Kneading continuous, with mechanical mixing or kneading devices with movable mixing or kneading devices rotary with single shaft with screw or helix
-
- 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
- B29B7/00—Mixing; Kneading
- B29B7/30—Mixing; Kneading continuous, with mechanical mixing or kneading devices
- B29B7/34—Mixing; Kneading continuous, with mechanical mixing or kneading devices with movable mixing or kneading devices
- B29B7/38—Mixing; Kneading continuous, with mechanical mixing or kneading devices with movable mixing or kneading devices rotary
- B29B7/46—Mixing; Kneading continuous, with mechanical mixing or kneading devices with movable mixing or kneading devices rotary with more than one shaft
- B29B7/48—Mixing; Kneading continuous, with mechanical mixing or kneading devices with movable mixing or kneading devices rotary with more than one shaft with intermeshing devices, e.g. screws
- B29B7/487—Mixing; Kneading continuous, with mechanical mixing or kneading devices with movable mixing or kneading devices rotary with more than one shaft with intermeshing devices, e.g. screws with consecutive casings or screws, e.g. for feeding, discharging, mixing
-
- 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
- B29B7/00—Mixing; Kneading
- B29B7/30—Mixing; Kneading continuous, with mechanical mixing or kneading devices
- B29B7/34—Mixing; Kneading continuous, with mechanical mixing or kneading devices with movable mixing or kneading devices
- B29B7/38—Mixing; Kneading continuous, with mechanical mixing or kneading devices with movable mixing or kneading devices rotary
- B29B7/385—Mixing; Kneading continuous, with mechanical mixing or kneading devices with movable mixing or kneading devices rotary fluid mixers
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- B—PERFORMING OPERATIONS; TRANSPORTING
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- 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
- B29B7/00—Mixing; Kneading
- B29B7/30—Mixing; Kneading continuous, with mechanical mixing or kneading devices
- B29B7/34—Mixing; Kneading continuous, with mechanical mixing or kneading devices with movable mixing or kneading devices
- B29B7/38—Mixing; Kneading continuous, with mechanical mixing or kneading devices with movable mixing or kneading devices rotary
- B29B7/46—Mixing; Kneading continuous, with mechanical mixing or kneading devices with movable mixing or kneading devices rotary with more than one shaft
- B29B7/48—Mixing; Kneading continuous, with mechanical mixing or kneading devices with movable mixing or kneading devices rotary with more than one shaft with intermeshing devices, e.g. screws
- B29B7/482—Mixing; Kneading continuous, with mechanical mixing or kneading devices with movable mixing or kneading devices rotary with more than one shaft with intermeshing devices, e.g. screws provided with screw parts in addition to other mixing parts, e.g. paddles, gears, discs
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- 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
- B29B7/00—Mixing; Kneading
- B29B7/30—Mixing; Kneading continuous, with mechanical mixing or kneading devices
- B29B7/34—Mixing; Kneading continuous, with mechanical mixing or kneading devices with movable mixing or kneading devices
- B29B7/38—Mixing; Kneading continuous, with mechanical mixing or kneading devices with movable mixing or kneading devices rotary
- B29B7/46—Mixing; Kneading continuous, with mechanical mixing or kneading devices with movable mixing or kneading devices rotary with more than one shaft
- B29B7/48—Mixing; Kneading continuous, with mechanical mixing or kneading devices with movable mixing or kneading devices rotary with more than one shaft with intermeshing devices, e.g. screws
- B29B7/482—Mixing; Kneading continuous, with mechanical mixing or kneading devices with movable mixing or kneading devices rotary with more than one shaft with intermeshing devices, e.g. screws provided with screw parts in addition to other mixing parts, e.g. paddles, gears, discs
- B29B7/483—Mixing; Kneading continuous, with mechanical mixing or kneading devices with movable mixing or kneading devices rotary with more than one shaft with intermeshing devices, e.g. screws provided with screw parts in addition to other mixing parts, e.g. paddles, gears, discs the other mixing parts being discs perpendicular to the screw axis
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- 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
- B29B7/00—Mixing; Kneading
- B29B7/30—Mixing; Kneading continuous, with mechanical mixing or kneading devices
- B29B7/58—Component parts, details or accessories; Auxiliary operations
- B29B7/60—Component parts, details or accessories; Auxiliary operations for feeding, e.g. end guides for the incoming material
- B29B7/603—Component parts, details or accessories; Auxiliary operations for feeding, e.g. end guides for the incoming material in measured doses, e.g. proportioning of several materials
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- 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
- B29B7/00—Mixing; Kneading
- B29B7/74—Mixing; Kneading using other mixers or combinations of mixers, e.g. of dissimilar mixers ; Plant
- B29B7/7461—Combinations of dissimilar mixers
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- 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
- B29B7/00—Mixing; Kneading
- B29B7/74—Mixing; Kneading using other mixers or combinations of mixers, e.g. of dissimilar mixers ; Plant
- B29B7/7476—Systems, i.e. flow charts or diagrams; Plants
- B29B7/7485—Systems, i.e. flow charts or diagrams; Plants with consecutive mixers, e.g. with premixing some of the components
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- 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
- B29B7/00—Mixing; Kneading
- B29B7/80—Component parts, details or accessories; Auxiliary operations
- B29B7/82—Heating or cooling
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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
- B29C48/25—Component parts, details or accessories; Auxiliary operations
- B29C48/36—Means for plasticising or homogenising the moulding material or forcing it through the nozzle or die
- B29C48/50—Details of extruders
- B29C48/505—Screws
- B29C48/54—Screws with additional forward-feeding elements
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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
- B29C48/25—Component parts, details or accessories; Auxiliary operations
- B29C48/36—Means for plasticising or homogenising the moulding material or forcing it through the nozzle or die
- B29C48/50—Details of extruders
- B29C48/505—Screws
- B29C48/575—Screws provided with elements of a generally circular cross-section for shearing the melt, i.e. shear-ring elements
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J3/00—Processes of treating or compounding macromolecular substances
- C08J3/20—Compounding polymers with additives, e.g. colouring
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L33/00—Compositions of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and only one being terminated by only one carboxyl radical, or of salts, anhydrides, esters, amides, imides or nitriles thereof; Compositions of derivatives of such polymers
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L69/00—Compositions of polycarbonates; Compositions of derivatives of polycarbonates
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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
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- B29C48/285—Feeding the extrusion material to the extruder
- B29C48/286—Raw material dosing
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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
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- B29C48/375—Plasticisers, homogenisers or feeders comprising two or more stages
- B29C48/385—Plasticisers, homogenisers or feeders comprising two or more stages using two or more serially arranged screws in separate barrels
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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
- B29C48/25—Component parts, details or accessories; Auxiliary operations
- B29C48/36—Means for plasticising or homogenising the moulding material or forcing it through the nozzle or die
- B29C48/395—Means for plasticising or homogenising the moulding material or forcing it through the nozzle or die using screws surrounded by a cooperating barrel, e.g. single screw extruders
- B29C48/397—Means for plasticising or homogenising the moulding material or forcing it through the nozzle or die using screws surrounded by a cooperating barrel, e.g. single screw extruders using a single screw
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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
- B29C48/25—Component parts, details or accessories; Auxiliary operations
- B29C48/36—Means for plasticising or homogenising the moulding material or forcing it through the nozzle or die
- B29C48/50—Details of extruders
- B29C48/505—Screws
- B29C48/55—Screws having reverse-feeding elements
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- 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
- B29K2033/00—Use of polymers of unsaturated acids or derivatives thereof as moulding material
- B29K2033/04—Polymers of esters
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- 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
- B29K2069/00—Use of PC, i.e. polycarbonates or derivatives thereof, as moulding material
-
- 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
- B29K2995/00—Properties of moulding materials, reinforcements, fillers, preformed parts or moulds
- B29K2995/0018—Properties of moulding materials, reinforcements, fillers, preformed parts or moulds having particular optical properties, e.g. fluorescent or phosphorescent
- B29K2995/0026—Transparent
Definitions
- the present invention relates to a method for producing a transparent resin composition containing a polycarbonate resin and an acrylic resin.
- Polycarbonate resin is excellent in transparency, dimensional stability, impact resistance and the like, and has been widely used in various fields such as automobiles, electrical equipment, and houses. On the other hand, the polycarbonate resin has excellent characteristics as described above, but since the surface hardness and UV resistance are inferior, research and development relating to blending with an acrylic resin is underway.
- Patent Document 1 discloses a technique for obtaining a transparent resin material by kneading a raw material in which a polycarbonate resin and a methacrylic resin are blended by a high shear molding apparatus having an internal feedback screw.
- the size of the dispersed phase becomes larger than the wavelength in the visible region, and the kneaded resin material has a cloudy appearance instead of being transparent. To be presented.
- the high shear molding apparatus having an internal feedback screw disclosed in Patent Document 1 is a batch type molding apparatus and cannot continuously take out the kneaded resin material. In addition, it takes 2 minutes to knead 2-5 g of the raw material. For this reason, the production efficiency is lower than that of a conventional continuous manufacturing apparatus such as an extruder, and in reality, it is difficult to apply to a production line that continuously manufactures resin products.
- An object of the present invention is to obtain a production method capable of continuously and efficiently producing a transparent resin composition obtained by blending a polycarbonate resin and an acrylic resin.
- the method for producing a transparent resin composition according to the present invention includes a polycarbonate resin having a supply amount per unit time set to 95 to 60% by weight and a supply amount per unit time of 5 to 40% by weight.
- Acrylic resin set to% is continuously supplied to a twin screw extruder in which two first screws meshing with each other rotate in the same direction at 600 rpm or less, The polycarbonate resin and the acrylic resin are melted and mixed in the twin screw extruder to produce a melt mixed resin, and the melt mixed resin is continuously discharged from the twin screw extruder, Single-screw extrusion having a second screw in which a feed flight is formed from the proximal end portion toward the distal end portion and a shearing processing portion is provided in the intermediate portion, and a cylinder in which the second screw is accommodated Continuously supplying the molten mixed resin discharged from the twin-screw extruder to the machine, A transparent resin composition is produced by kneading the molten mixed resin with the
- a transparent resin composition obtained by blending a polycarbonate resin and an acrylic resin can be continuously and efficiently produced. Therefore, it can be applied to a production line for continuously producing resin products.
- FIG. 1 is a cross-sectional view schematically showing a manufacturing apparatus used in the manufacturing method of the present invention.
- FIG. 2 is a cross-sectional view schematically showing a single screw extruder used in the production method of the present invention.
- FIG. 3 is a cross-sectional view schematically showing another embodiment of the single-screw extruder used in the production method of the present invention.
- FIGS. 1 to 3 a first embodiment of the present invention will be described with reference to FIGS. 1 to 3.
- FIG. 1 schematically discloses a production apparatus 10 used in carrying out the method for producing a transparent resin composition according to the present invention.
- the manufacturing apparatus 10 includes a first raw material supply device 11, a second raw material supply device 12, a twin screw extruder 13, a single pipe 14, and a single screw extruder 15.
- the first raw material supply device 11 is an element that continuously supplies the polycarbonate resin A, and in this embodiment, the supply amount of the polycarbonate resin A per unit time is set in the range of 95 to 60% by weight.
- the second raw material supply device 12 is an element that continuously supplies the acrylic resin B. In this embodiment, the supply amount of the acrylic resin B per unit time is set in a range of 5 to 40% by weight. Yes.
- the twin screw extruder 13 continuously melts and mixes the polycarbonate resin A supplied from the first raw material supply device 11 and the acrylic resin B supplied from the second raw material supply device 12 to melt and mix the resin.
- the generated molten mixed resin C which is an element that generates C, is continuously discharged from the twin-screw extruder 13.
- the single tube 14 is configured such that the molten mixed resin C discharged from the twin screw extruder 13 flows.
- the single-screw extruder 15 is an element that generates the transparent resin composition D by continuously kneading the molten mixed resin C supplied from the single tube 14, and the generated transparent resin composition D is a single unit. It is continuously discharged from the shaft extruder 15.
- the twin-screw extruder 13 includes a barrel 20 and two first screws 22 (only one is shown) inserted into a cylinder 21 inside the barrel 20.
- the first screw 22 rotates in the same direction while meshing with each other in the cylinder 21.
- a raw material supply port 23 is provided at one end along the longitudinal direction of the barrel 20. The raw material supply port 23 communicates with the cylinder 21 at a position corresponding to the base end side of the first screw 22.
- the polycarbonate resin A is continuously supplied from the first raw material supply device 11 to the cylinder 21 through the raw material supply port 23.
- the acrylic resin B is continuously supplied from the second raw material supply device 12 to the cylinder 21 through the raw material supply port 23.
- the barrel 20 has the other end located on the tip side of the first screw 22.
- a single tube 14 is connected to the other end of the barrel 20.
- a heater 24 for heating the barrel 20 is attached to the outer peripheral portion of the barrel 20.
- the first screw 22 receives torque from a drive motor (not shown) and rotates.
- the polycarbonate resin A and the acrylic resin B supplied to the cylinder 21 from the raw material supply port 23 are continuously conveyed from the base end portion of the first screw 22 toward the tip end portion with the rotation of the first screw 22.
- the polycarbonate resin A and the acrylic resin B pass through the inside of the cylinder 21 from one end of the cylinder 21 toward the other end. At this time, the polycarbonate resin A and the acrylic resin B are stirred by the rotating first screw 22 and heated by receiving heat from the heater 24. As a result, the polycarbonate resin A and the acrylic resin B are melted and mixed to become a melt-mixed resin C.
- a heater 31 is attached to the outer periphery of the single tube 14. The heater 31 heats the single tube 14 so that the molten mixed resin C maintains a molten state.
- the single-screw extruder 15 includes a barrel 40 and a second screw 42 inserted through a cylinder 41 inside the barrel 40.
- a resin supply port 44 is provided at one end along the longitudinal direction of the barrel 40.
- the resin supply port 44 is communicated with the cylinder 41 at a position corresponding to the base end side of the second screw 42.
- the downstream end of the passage 30 of the single pipe 14 is connected to the resin supply port 44 of the barrel 40. Therefore, the molten mixed resin C flowing through the passage 30 of the single pipe 14 is continuously supplied from the resin supply port 44 to the cylinder 41.
- the barrel 40 has the other end located on the tip side of the second screw 42.
- a die 45 is provided at the other end of the barrel 40.
- a heater 46 for heating the cylinder 41 is attached to the outer periphery of the barrel 40.
- FIG. 2 schematically shows the second screw 42 of the single-screw extruder 15.
- the second screw 42 receives torque from a drive motor (not shown) and rotates.
- the 2nd screw 42 has the shearing process part 43 in the intermediate part along the longitudinal direction.
- a feed flight 47 is formed between the proximal end portion of the second screw 42 and the shearing processing portion 43 and between the shearing processing portion 43 and the distal end portion of the second screw 42.
- the outer diameter including the peak of the mountain and the valley diameter are set to constant values.
- the shear processing unit 43 has a reverse flight 48.
- the reverse feed flight 48 is twisted in the direction opposite to the twist direction of the feed flight 47 and is continuously formed in the axial direction of the second screw 42.
- the number of peaks in the reverse feed flight 48 is, for example, 2 or more and 5 or less, and there are no grooves or notches between one end and the other end of the reverse feed flight 48. Therefore, the reverse feed flight 48 is continuously and uniformly formed.
- the molten mixed resin C continuously supplied from the single tube 14 to the cylinder 41 through the resin supply port 44 of the barrel 40 is supplied to the second screw 42 as the second screw 42 rotates. From the base end of the sheet toward the shearing unit 43.
- the molten mixed resin C that has reached the shear processing unit 43 passes between the inner peripheral wall of the cylinder 41 and the outer peripheral portion of the reverse flight 48.
- the melt-mixed resin C is kneaded by being subjected to a shearing action, and the acrylic resin B is uniformly and densely dispersed in the polycarbonate resin A.
- a transparent resin composition D containing the polycarbonate resin A and the acrylic resin B is generated.
- the generated transparent resin composition D is transported from the shearing unit 43 toward the tip of the second screw 42 and discharged to the die 45 connected to the other end of the barrel 40.
- the die 45 forms the transparent resin composition D into a predetermined shape by applying a shaping process to the transparent resin composition D.
- the molded transparent resin composition D becomes a product and is extruded from the die 45.
- FIG. 3 schematically shows the second screw 42 of the single-screw extruder 15 according to the second embodiment.
- the second screw 42 is different from the first embodiment in matters relating to the form of the shearing processing unit 43.
- Other configurations of the second screw 42 are the same as those in the first embodiment.
- the shearing unit 43 has an annular protrusion 49.
- the protruding portion 49 protrudes coaxially in the radial direction of the second screw 42 and is formed continuously in the circumferential direction of the second screw 42.
- the protrusion 49 is formed on the second screw 42 as a continuous integrated structure having no groove or notch on the outer peripheral surface thereof.
- the molten mixed resin C continuously supplied from the single tube 14 to the cylinder 41 through the resin supply port 44 of the barrel 40 is supplied to the second screw 42 as the second screw 42 rotates. From the base end of the sheet toward the shearing unit 43.
- the molten mixed resin C that has reached the shearing portion 43 passes between the inner peripheral wall of the cylinder 41 and the outer peripheral surface of the protruding portion 49.
- the melt-mixed resin C is kneaded by being subjected to a shearing action, and the acrylic resin B is uniformly and densely dispersed in the polycarbonate resin A.
- a transparent resin composition D containing the polycarbonate resin A and the acrylic resin B is generated.
- the generated transparent resin composition D is transported from the shearing unit 43 toward the tip of the second screw 42 and discharged to the die 45 connected to the other end of the barrel 40.
- the die 45 forms the transparent resin composition D into a predetermined shape by applying a shaping process to the transparent resin composition D.
- the molded transparent resin composition D becomes a product and is extruded from the die 45.
- the outer diameter of the second screw 42 of the single-screw extruder 15 is larger than the outer diameter of the first screw 22 of the twin-screw extruder 13.
- the shear processing unit 43 is not limited to being provided at one location in the middle of the second screw 42, and for example, a plurality of shear processing units 43 are arranged in the axial direction of the second screw 42 according to the kneading situation. May be.
- the polycarbonate resin A as a raw material is put into the first raw material supply device 11 of the manufacturing apparatus 10.
- the acrylic resin B as a raw material is put into the second raw material supply device 12 of the manufacturing apparatus 10.
- the first raw material supply device 11 measures the polycarbonate resin A so that the supply amount of the polycarbonate resin A per unit time is in the range of 95 to 60% by weight, and the polycarbonate resin A is used as a cylinder of the twin screw extruder 13. 21 is supplied continuously.
- the second raw material supply device 12 measures the acrylic resin B so that the supply amount of the acrylic resin B per unit time is in the range of 5 to 40% by weight, and the acrylic resin B is fed into the twin-screw extruder. 13 cylinders 21 are continuously supplied.
- the polycarbonate resin A and the acrylic resin B supplied to the cylinder 21 are conveyed from one end of the cylinder 21 to the other end by the first screw 22 that rotates while meshing with each other. In the course of this conveyance, the polycarbonate resin A and the acrylic resin B are melted and mixed.
- the temperature of the barrel 20 when conveying the polycarbonate resin A and the acrylic resin B is set to 240 to 300 ° C., and the rotation speed of the first screw 22 is set to 50 to 600 rpm.
- the twin-screw extruder 13 continuously generates a liquid-phase molten mixed resin C from the solid-phase polycarbonate resin A and the solid-phase acrylic resin B. At this time, the acrylic resin B is not uniformly and densely dispersed with respect to the polycarbonate resin A, and the melt-mixed resin C has a cloudy appearance.
- the molten mixed resin C discharged from the twin screw extruder 13 is supplied to the single screw extruder 15 through the passage 30 in the single pipe 14 without being in contact with the atmosphere.
- the single tube 14 is heated by the heater 31 so that the molten mixed resin C maintains a molten state.
- the heating temperature of the single tube 14 by the heater 31 is preferably set to 220 to 280 ° C.
- the molten mixed resin C continuously supplied from the single tube 14 to the cylinder 41 of the single screw extruder 15 is directed from the base end portion of the second screw 42 toward the shearing unit 43 by the rotating second screw 42. Be transported. At this time, the temperature of the cylinder 41 is set to 220 to 280 ° C., and the rotational speed of the second screw 42 is set to 500 to 4000 rpm.
- the rotation speed of the second screw 42 of the single-screw extruder 15 having an outer diameter larger than that of the first screw 22 of the twin-screw extruder 13 is set to 500 to 4000 rpm. Therefore, the molten mixed resin C continuously supplied from the resin supply port 44 to the cylinder 41 is conveyed toward the shearing unit 43 without being filled between the feed flights 47 of the second screw 42. Furthermore, since the outer diameter and valley diameter of the feed flight 47 are defined to be constant values, the molten mixed resin C supplied to the cylinder 41 is sent to the shearing unit 43 in a stable state.
- the molten mixed resin C that has reached the shearing unit 43 passes between the outer peripheral part of the shearing unit 43 and the inner peripheral wall of the cylinder 41.
- the shearing unit 43 rotates at 500 to 4000 rpm, which is higher than the screw rotation speed of a single screw extruder used in general extrusion molding. For this reason, the molten mixed resin C that passes between the outer peripheral portion of the shear processing portion 43 and the inner peripheral wall of the cylinder 41 is kneaded while receiving a strong shearing action in a short time.
- the acrylic resin B is uniformly and densely dispersed in the polycarbonate resin A, and a transparent resin composition D containing the polycarbonate resin A and the acrylic resin B is generated.
- the produced transparent resin composition D is stably conveyed to the tip of the second screw 42 by the feed flight 47 having a constant outer diameter and valley diameter, and is subjected to a shaping process by the die 45. The Thereby, the product of a desired shape is obtained, without shaving the transparent resin composition D. The product is extruded from the die 45.
- the front twin screw extruder 13 of the manufacturing apparatus 10 is responsible for the process of melting and mixing the polycarbonate resin A and the acrylic resin B
- the rear single screw extruder 15 is the polycarbonate resin A and It takes the process of kneading the acrylic resin B while adding a shearing action.
- manufacturing conditions including the rotational speed of the first screw 22 at the time of melting and mixing, and manufacturing conditions including the rotational speed of the second screw 42 that adds a strong shearing action in a short time Can be set individually while associating with each other. Therefore, the transparent resin composition D containing the polycarbonate resin A and the acrylic resin B can be stably and continuously produced.
- Example 1 Example 1
- Example 2 Example 2
- a comparative example a comparative example
- Example 1 First, in carrying out the manufacturing method according to the present invention, as a twin-screw extruder 13 responsible for the previous step of the manufacturing apparatus 10, manufactured by Toshiba Machine Co., Ltd., which is defined as a nominal diameter of 18 mm of the outer diameter of the first screw 22.
- a twin screw extruder, model TEM-18SS was prepared.
- a single-screw extruder 14 was connected to a twin-screw extruder model TEM-18SS and a single-screw extruder model SE-36SP.
- the length (effective length) of the first screw 22 with respect to the outer diameter of the first screw 22 was set to 48.
- the length (effective length) of the second screw 42 with respect to the outer diameter of the second screw 42 is set to 8.
- the reverse feed flights 48 are arranged at two locations separated in the longitudinal direction of the second screw 42. The clearance between the inner peripheral wall of the cylinder 41 and the outer peripheral portion of the reverse feed flight 48 was set to 0.3 mm.
- the temperature of the barrel 20 of the twin screw extruder 13, the temperature of the barrel 40 of the single screw extruder 15, and the temperature of the single tube 14 were set to 260 ° C., respectively.
- Panlite L-1250Y manufactured by Teijin Ltd. was used as the polycarbonate resin A supplied to the twin screw extruder 13.
- acrylic resin B supplied to the twin screw extruder 13 Acrypet VH001 manufactured by Mitsubishi Rayon Co., Ltd. was used.
- the polycarbonate resin A is supplied from the first raw material supply device 11 to the cylinder 21 of the twin-screw extruder 13 at 8 kg / hour, and the acrylic resin B is supplied from the second raw material supply device 12 to the cylinder 21 of the twin-screw extruder 13 at 2 kg / hour. Supplied.
- the rotation speed of the first screw 22 was set to 200 rpm, and the polycarbonate resin A and the acrylic resin B were melted and mixed to produce a molten mixed resin C.
- the melted mixed resin C is kneaded with the second screw 42 of the single screw extruder 15 at a rotation speed of 2800 rpm, and the resin composition containing the polycarbonate resin A and the acrylic resin B at 10 kg per hour (about 167 g per minute) by the die 45. I got a thing. When the obtained resin composition was visually evaluated, no cloudiness was observed and a transparent aspect was exhibited.
- Example 2 In Example 2, the melt-mixed resin C was kneaded using the single-screw extruder 15 having the second screw 42 having a different form of the shearing unit 43.
- the shearing processing unit 43 has annular projecting portions 49 at two locations separated in the longitudinal direction of the second screw 42.
- the configuration of the manufacturing apparatus 10 excluding the single screw extruder 15 is the same as that of the first embodiment.
- Example 2 the polycarbonate resin A is supplied from the first raw material supply device 11 to the cylinder 21 of the twin screw extruder 13 at 8 kg / hour, and the acrylic resin B is supplied from the second raw material supply device 12 to the twin screw extruder 13. 2 kg per hour was supplied to the cylinder 21.
- the rotation speed of the first screw 22 was set to 200 rpm, and the polycarbonate resin A and the acrylic resin B were melted and mixed to produce a molten mixed resin C.
- the melted mixed resin C is kneaded with the second screw 42 of the single screw extruder 15 at a rotation speed of 2800 rpm, and the resin composition containing the polycarbonate resin A and the acrylic resin B at 10 kg per hour (about 167 g per minute) by the die 45. I got a thing. When the obtained resin composition was visually evaluated, no cloudiness was observed and a transparent aspect was exhibited.
- Comparative Example 1 In Comparative Example 1, a twin-screw extruder manufactured by Toshiba Machine Co., Ltd. with a nominal outer diameter of 18 mm, model TEM-18SS, was prepared, and the two screws of the twin-screw extruder meshed with each other were prepared. A kneading disc was placed inside each.
- the melt mixed resin containing the polycarbonate resin and the acrylic resin extruded from the twin-screw extruder was observed while changing the rotation speed of the screw from 300 rpm to 1200 rpm. As a result, the melt-mixed resin extruded from the twin-screw extruder always appeared cloudy and did not become transparent.
- Example 2 As is clear from the comparison between Example 1, Example 2 and Comparative Example 1, the resin composition containing the polycarbonate resin and the acrylic resin continuously produced by the production method according to the present invention is not clouded. It can be seen that the acrylic resin is uniformly and densely dispersed in the polycarbonate resin.
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Abstract
Description
前記ポリカーボネート樹脂および前記アクリル樹脂を前記二軸押出機で溶融および混合することで溶融混合樹脂を生成するとともに、当該溶融混合樹脂を前記二軸押出機から連続的に吐出し、
基端部から先端部に向けて送りフライトが形成されるとともに、中間部にせん断処理部が設けられた第2のスクリュと、当該第2のスクリュが収容されたシリンダと、を有する単軸押出機に前記二軸押出機から吐出された前記溶融混合樹脂を連続的に供給し、
前記第2のスクリュと共に500rpm以上、4000rpm以下で回転する前記せん断処理部により前記溶融混合樹脂を混練することで透明樹脂組成物を生成し、当該透明樹脂組成物を前記単軸押出機から連続的に吐出させるようにしたことを特徴としている。
まず、本発明に係る製造方法を実施するにあたり、製造装置10の前段の工程を担う二軸押出機13として、第1のスクリュ22の外径の呼び径18mmに規定された東芝機械株式会社製の二軸押出機、型式TEM-18SSを準備した。製造装置10の後段の工程を担う単軸押出機として、第2のスクリュ42の外径の呼び径が36mmに規定された東芝機械株式会社製の単軸押出機、型式SE-36SPを準備した。さらに、型式TEM-18SSの二軸押出機と、型式SE-36SPの単軸押出機とを単管14で接続した。
実施例2では、せん断処理部43の形態が異なる第2のスクリュ42を有する単軸押出機15を用いて溶融混合樹脂Cを混練した。せん断処理部43は、第2のスクリュ42の長手方向に離間した二箇所に円環状の突出部49を有している。単軸押出機15を除く製造装置10の構成は、実施例1と同様である。
比較例1では、スクリュの外径の呼び径が18mmに規定された東芝機械株式会社製の二軸押出機、型式TEM-18SSを準備し、当該二軸押出機の互いに噛み合う二本のスクリュの中に夫々ニーディングディスクを配置した。
Claims (7)
- ポリカーボネート樹脂とアクリル樹脂を含む透明樹脂組成物を製造する方法であって、
単位時間当たりの供給量が95~60重量%に設定された前記ポリカーボネート樹脂および単位時間当たりの供給量が5~40重量%に設定された前記アクリル樹脂を、互いに噛み合う二本の第1のスクリュが600rpm以下で同方向に回転する二軸押出機に連続的に供給し、
前記ポリカーボネート樹脂および前記アクリル樹脂を前記二軸押出機で溶融および混合することで溶融混合樹脂を生成するとともに、当該溶融混合樹脂を前記二軸押出機から連続的に吐出し、
基端部から先端部に向けて送りフライトが形成されるとともに、中間部にせん断処理部が設けられた第2のスクリュと、当該第2のスクリュが収容されたシリンダと、を有する単軸押出機に前記二軸押出機から吐出された前記溶融混合樹脂を連続的に供給し、
前記第2のスクリュと共に500rpm以上、4000rpm以下で回転する前記せん断処理部により前記溶融混合樹脂を混練することで透明樹脂組成物を生成するとともに、生成された前記透明樹脂組成物を前記単軸押出機から連続的に吐出させるようにした透明樹脂組成物の製造方法。 - 前記せん断処理部は、前記送りフライトの捩じれの向きと逆の向きに捩じれた逆送りフライトを有し、前記第2のスクリュによって搬送される前記溶融混合樹脂が前記シリンダの内周壁と前記逆送りフライトの外周部との間の隙間を通過する際に、前記溶融混合樹脂が混練される請求項1に記載の透明樹脂組成物の製造方法。
- 前記溶融混合樹脂が前記シリンダの内周壁と前記逆送りフライトの外周部との間の隙間を通過する際に、前記溶融混合樹脂にせん断作用が付加される請求項2に記載の透明樹脂組成物の製造方法。
- 前記せん断処理部は、前記第2のスクリュの径方向に同軸状に突出されるとともに、前記第2のスクリュの周方向に連続して形成された円環状の突出部を有し、前記第2のスクリュによって搬送される前記溶融混合樹脂が前記シリンダの内周壁と前記突出部の外周部との間の隙間を通過する際に、前記溶融混合樹脂が混練される請求項1に記載の透明樹脂組成物の製造方法。
- 前記溶融混合樹脂が前記シリンダの内周壁と前記突出部の外周部との間の隙間を通過する際に、前記溶融混合樹脂にせん断作用が付加される請求項4に記載の透明樹脂組成物の製造方法。
- 前記単軸押出機の前記送りフライトは、その外径および谷径が一定に設定され、前記二軸押出機から供給される前記溶融混合樹脂を前記スクリュの基端部から前記せん断処理部に搬送し、前記せん断処理部で生成された前記透明樹脂組成物を前記せん断処理部から前記スクリュの先端部に搬送するようにした請求項1ないし請求項5のいずれか一項に記載の透明樹脂組成物の製造方法。
- 前記第2のスクリュの外径は、前記第1のスクリュの外径よりも大きく、前記第2のスクリュによって搬送される前記溶融混合樹脂は、前記第2のスクリュの前記送りフライトの間に充満することなく前記せん断処理部に向けて搬送される請求項1ないし請求項6のいずれか一項に記載の透明樹脂組成物の製造方法。
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JP2012167195A (ja) * | 2011-02-15 | 2012-09-06 | Sumitomo Chemical Co Ltd | 樹脂組成物の製造方法、樹脂組成物及び成形体 |
JP2012201832A (ja) * | 2011-03-28 | 2012-10-22 | Sumitomo Chemical Co Ltd | 樹脂組成物の製造方法および樹脂組成物 |
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US11441030B2 (en) * | 2015-10-02 | 2022-09-13 | Teijin Limited | Resin composition and film formed from same |
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US20160303766A1 (en) | 2016-10-20 |
TWI547359B (zh) | 2016-09-01 |
KR20160089437A (ko) | 2016-07-27 |
US9688001B2 (en) | 2017-06-27 |
DE112014006029T5 (de) | 2016-09-15 |
KR101837878B1 (ko) | 2018-03-12 |
JP5659288B1 (ja) | 2015-01-28 |
TW201538293A (zh) | 2015-10-16 |
DE112014006029B4 (de) | 2022-02-10 |
CN105873736B (zh) | 2018-01-02 |
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