CN101585924B - Production line of EPP polypropylene foaming beads - Google Patents
Production line of EPP polypropylene foaming beads Download PDFInfo
- Publication number
- CN101585924B CN101585924B CN200910025677XA CN200910025677A CN101585924B CN 101585924 B CN101585924 B CN 101585924B CN 200910025677X A CN200910025677X A CN 200910025677XA CN 200910025677 A CN200910025677 A CN 200910025677A CN 101585924 B CN101585924 B CN 101585924B
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- twin screw
- water
- screw extruder
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Classifications
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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
- B29C48/375—Plasticisers, homogenisers or feeders comprising two or more stages
- B29C48/39—Plasticisers, homogenisers or feeders comprising two or more stages a first extruder feeding the melt into an intermediate location of a second extruder
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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
- B29B7/487—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
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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
- B29B7/7404—Mixing devices specially adapted for foamable substances
- B29B7/7409—Mixing devices specially adapted for foamable substances with supply of gas
- B29B7/7414—Mixing devices specially adapted for foamable substances with supply of gas with rotatable stirrer, e.g. using an intermeshing rotor-stator system
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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
- B29B7/748—Plants
-
- 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
-
- 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
- B29B7/84—Venting or degassing ; Removing liquids, e.g. by evaporating components
- B29B7/845—Venting, degassing or removing evaporated components in devices with rotary stirrers
-
- 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
- B29B9/00—Making granules
- B29B9/02—Making granules by dividing preformed material
- B29B9/06—Making granules by dividing preformed material in the form of filamentary material, e.g. combined with extrusion
- B29B9/065—Making granules by dividing preformed material in the form of filamentary material, e.g. combined with extrusion under-water, e.g. underwater pelletizers
-
- 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
- B29C48/375—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
-
- 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
- B29C48/40—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 two or more parallel screws or at least two parallel non-intermeshing screws, e.g. twin screw extruders
-
- 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
- B29B7/72—Measuring, controlling or regulating
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Processing And Handling Of Plastics And Other Materials For Molding In General (AREA)
- Manufacture Of Porous Articles, And Recovery And Treatment Of Waste Products (AREA)
Abstract
The invention discloses a production line of EPP polypropylene foaming beads, which is characterized in that devices or systems are connected in turn according to the following sequence: a low-temperature mixing system, a sealed leakage-proof feeding machine, a double-screw extruder, an underwater grain cutting system, a first depth drying system, a plasma fluidized bed reactor, a water-soluble reaction system, a second depth drying system, a surface treatment mixing system, a finished product storage hopper and a packing system; the double-screw extruder is provided with a gas foaming agent filling opening; a plasma reaction device and an inert gas filling device are arranged on a plasma fluidized bed of the plasma fluidized bed reactor; and the water-soluble reaction system comprises a water-soluble reaction kettle which is provided with an auxiliary low-temperature liquid medium filling opening and a liquid foaming agent filling opening. The foaming agent content in the EPP polypropylene foaming beads produced by the production line is even, and the product quality is stable.
Description
Technical field
The present invention relates to a kind of EPP polypropylene foaming beads production line, belong to the chemical machinery technical field.
Background technology
The EPP expanded bead is in twin screw extruder, to react mixing by HSMPP, resin, auxiliary agent etc., again by the bead that cuts out minute diameter in the dicing machine, finally becomes EPP pre-frothing bead product through foaming again.What the material operational path of " polypropylene expanded " suite of equipment adopted at present in the world is general " chemical process ", does not also utilize physical method to carry out polypropylene expanded technology contents.
The system flow that said chemical process is produced polypropylene foaming beads is: mixing and stirring system → screw extrusion press → water ring pelletizing system → dewatering system → dehumidification system → finished product.
Gas foaming agent all is injected into and carries out the mixing pelletizing of extruding in the twin screw extruder in the production process; In the mixing process owing to receive humidity, the uniformity coefficient of disperse shearing and the influence of blended consistency; So it is high to the forcing machine processing requirement; Wayward, and make the content of the whipping agent in the finished product bead inhomogeneous, cause product unstable.
In addition, application number is that 200720169451.3 utility model application discloses a kind of butadiene styrene resin hot melts granulation underwater system, is applied to hot meltss such as butadiene styrene resin and is shaped to particle under water.Comprise: twin screw extruder, reversing valve, underwater pelletizer, granulation water circle device, centrifugal drier, gear; It is characterized in that: hot melts pressure-raising device is arranged between twin screw extruder and underwater pelletizer, hot melts pressure-raising device promptly is installed between twin screw extruder discharge port and the granulation underwater machine inlet capable.Effect is: owing in the twin screw extruder downstream hot melts pressure-raising device is installed, realize the hot melts underwater cutpellet, improve output and can not cause the overload of twin screw extruder top hole pressure that granulation output is high.But this application does not disclose the content of a whole set of EPP polypropylene foaming beads production line.
Summary of the invention
Technical problem to be solved by this invention provide a kind of content that makes the whipping agent in the finished product bead evenly, the production line of the EPP polypropylene foaming beads of constant product quality.
For solving the problems of the technologies described above; The present invention provides a kind of EPP polypropylene foaming beads production line; Comprise twin screw extruder, underwater cutpellet system, dewatering system, dehumidification system and the electrical control cabinet that links to each other with each equipment; It is characterized in that: also comprise low temperature mixing system, sealed against leakage feeding machine, plasma jet fluidized bed reactor, water-soluble reactive system and surface treatment mixing system; Each equipment or system link to each other by following order successively: low temperature mixing system → sealed against leakage feeding machine → twin screw extruder → underwater cutpellet system → first depth drying system → plasma jet fluidized bed reactor → water-soluble reactive system → second depth drying system → surface treatment mixing system → finished product bin and packaging system, and said twin screw extruder is provided with the gas foaming agent inlet; Configuration plasma reaction device and rare gas element injection device on the plasma fluidisation bed of said plasma jet fluidized bed reactor; Said water-soluble reactive system comprises water-soluble reaction kettle, and water-soluble reaction kettle has assisted cryogenic liquid medium inlet and liquid blowing agent inlet.
The beneficial effect that the present invention reached: gas foaming agent must be expelled to the chemical process of blend in the forcing machine before EPP polypropylene foaming beads production line of the present invention changed; But adopt the high energy physics method; Promptly can gas foaming agent be injected a part on forcing machine, also can on forcing machine, not inject, but bead is carried out plasma reaction in fluidized-bed reactor; And then the bead behind the physical reaction put in the water-soluble reaction kettle add gas foaming agent and assisted cryogenic liquid medium such as alcohol etc.; Carry out reactive infiltration, in the surface treatment mixing system, carry out the surface treatment bead at last, finally accomplish EPP pre-frothing bead finished product; Make the content of the whipping agent in the finished product bead even, constant product quality.
Description of drawings
Fig. 1 is the device schematic flow sheet of the first embodiment of the present invention;
Fig. 2 is the device schematic flow sheet of the second embodiment of the present invention.
Embodiment
A kind of EPP polypropylene foaming beads production line of the present invention; Comprise twin screw extruder, underwater cutpellet system, dewatering system, dehumidification system and the electrical control cabinet that links to each other with each equipment; It is characterized in that: also comprise low temperature mixing system, sealed against leakage feeding machine, plasma jet fluidized bed reactor, water-soluble reactive system and surface treatment mixing system; Each equipment or system link to each other by following order successively: low temperature mixing system → sealed against leakage feeding machine → twin screw extruder → underwater cutpellet system → first depth drying system → plasma jet fluidized bed reactor → water-soluble reactive system → second depth drying system → surface treatment mixing system → finished product bin and packaging system, and said twin screw extruder is provided with the gas foaming agent inlet; Configuration plasma reaction device and rare gas element injection device on the plasma fluidisation bed of said plasma jet fluidized bed reactor; Said water-soluble reactive system comprises water-soluble reaction kettle, and water-soluble reaction kettle has assisted cryogenic liquid medium inlet and liquid blowing agent inlet.
Among the present invention, said twin screw extruder 4 configuration N
2The gas inlet, N2 gas forcing machine add the inlet position can select arbitrarily according to technology.
Among the present invention, said twin screw extruder 4 configuration dehydration venting ports, said dehydration venting port can be selected arbitrarily according to technology in the position of forcing machine.
Said twin screw extruder 4 can be twin screw single-order forcing machine or the two rank of twin screw forcing machine.
The length-to-diameter ratio of said twin screw single-order extruder screw is L/D56～64: 1.
The stack length-to-diameter ratio L/D of the two rank of said twin screw forcing machine 4 is up to 80～104: 1, so just can accomplish quick thawing, material blend, mixing shearing, reaction, devolatilization and the melt extrusion of high melt HDMPP, resin, auxiliary agent.
The screw rod specification of said twin screw extruder 4 is φ 26mm～φ 95mm.
Be provided with PLC or PPC automatic control system and Mechatronic control system in the said electrical control cabinet 1.
Said plasma jet fluidized bed reactor 8 comprises plasma fluidisation bed and fluidized-bed reactor, can effectively accomplish a pearl physical reaction.Said plasma fluidisation bed disposes the plasma reaction device on fluidized-bed, react when bead receives plasma electrode in fluid mapper process, and the bead body will form the honeycomb bead that has a lot of micropores.Fluidized-bed reactor is a configuration rare gas element injection device on fluidized-bed, when bead in fluid mapper process with the rare gas element reaction, bead also can form the honeycomb bead that has a lot of micropores.
Said water-soluble reactive system comprises reaction kettle or the reactor drum that has pressurization, water-soluble function, uses reaction kettle or reactor drum that whipping agent is infiltrated in the bead effectively.
In said water-soluble reaction kettle 9, add alcohol medium and liquid blowing agent in proportion, pour sealing pressurization behind the bead more in proportion into, whipping agent is penetrated in the bead in the alcohol medium.Get into dehydration procedure then, the alcohol volatilization is deposited in the bead whipping agent.
Said surface treatment mixing system 11 comprise have spray auxiliary agent and mix the high-speed mixer that mixes auxiliary agent, the vertical machine of mixing or horizontal mixed is mixed mixed machine.
Said low temperature mixing system comprises low-temperature mixed machine 2; Said low-temperature mixed machine 2 disposes the low-temperature protection device; Guaranteed raw material and auxiliary agent mixing under 0～20 ℃ of technological temperature, said low-temperature protection device comprises the lagging material that the pot volume surrounding of low temperature mixing system pastes, and the gas injection port that disposes at the pot cover place; Said gas injection port communicates with the nitrogen sealing coat that is arranged in the molten chamber of spices device, thereby plays the effect of oxygen barrier protection.
Comprise underwater pelletizer 5 in the said underwater cutpellet system; Said underwater pelletizer 5 has template; Said template header cross section is circular; Be inlaid with 10～20 φ 15～50mm cylinder shape wimet cylinders on the template header, each wimet cylindrical cross-section has the discharge hole of φ 0.2-φ 0.5mm, and discharge hole quantity is 100-200; Said underwater cutpellet system also comprises water extracter 6, and said water extracter 6 comprises dehydration and vibration sieve and multi-layer water filtering net.
Said sealed against leakage feeding machine 3 can effectively guarantee the metering delivery precision of material under the low-temperature condition.
Said finished product bin and packaging system comprise pipeline, middle jewelling blower fan, storage bin 12 and shrink-wrap system 13.
The said first depth drying system 7 comprises fluidized bed body, vibrating device and hot air drying system.
The said second depth drying system 10 comprises fluidized bed body, vibrating device and hot air drying system.
More than the constitutional features of each system or equipment can be separately or arbitrary combination be present among the present invention.
The art production process of EPP polypropylene foaming beads production line of the present invention is:
HSMPP, resin, auxiliary agent etc. react mixing in twin screw extruder.The underwater cutpellet system extrudes the bead that diameter is φ 0.2-φ 0.5mm, and bead carries out the efficient physical method again, is about to bead and gets into the reaction of plasma fluidisation bed, makes a lot of micropores of the inner generation of bead form honeycomb.Again bead is poured in the water-soluble reaction kettle in proportion, and sealing is pressurizeed after adding alcohol medium and liquid blowing agent in proportion, and whipping agent is penetrated in the bead in the alcohol medium.Next procedure dehydration then, the alcohol volatilization is deposited in the bead whipping agent.The bead that will have whipping agent at last enters into superficial treatment system and coats, and whipping agent is coated in the bead, has just formed expanded bead.
The present invention has changed the chemical process that gas foaming agent must be expelled to blend in the forcing machine; But adopt the high energy physics method; Promptly can gas foaming agent be injected a part on forcing machine, also can on forcing machine, not inject, but bead is carried out plasma reaction in fluidized-bed reactor; And then the bead behind the physical reaction put in the water-soluble reactor drum add gas foaming agent and auxiliary alcohol medium etc., carry out reactive infiltration.Mix at last on the machine of mixing again and carry out the surface treatment bead, finally accomplish EPP pre-frothing bead finished product, this set and working method make the content of the whipping agent in the finished product bead even, constant product quality.
Claims (9)
1. EPP polypropylene foaming beads production line; Comprise twin screw extruder, underwater cutpellet system, dewatering system, dehumidification system and the electrical control cabinet that links to each other with each equipment; It is characterized in that: also comprise low temperature mixing system, sealed against leakage feeding machine, plasma jet fluidized bed reactor (8), water-soluble reactive system and surface treatment mixing system (11); Each equipment or system link to each other by following order successively: low temperature mixing system → sealed against leakage feeding machine → twin screw extruder → underwater cutpellet system → first depth drying system → plasma jet fluidized bed reactor → water-soluble reactive system → second depth drying system → surface treatment mixing system → finished product bin and packaging system, and said twin screw extruder (4) is provided with the gas foaming agent inlet; Configuration plasma reaction device and rare gas element injection device on the plasma fluidisation bed of said plasma jet fluidized bed reactor (8); Said water-soluble reactive system comprises water-soluble reaction kettle (9), and water-soluble reaction kettle (9) has assisted cryogenic liquid medium inlet and liquid blowing agent inlet.
2. EPP polypropylene foaming beads production line according to claim 1 is characterized in that: said twin screw extruder (4) configuration N
2The gas inlet.
3. EPP polypropylene foaming beads production line according to claim 1 is characterized in that: said twin screw extruder (4) configuration dehydration venting port.
4. EPP polypropylene foaming beads production line according to claim 1 is characterized in that: said twin screw extruder (4) can be twin screw single-order forcing machine or the two rank of twin screw forcing machine.
5. EPP polypropylene foaming beads production line according to claim 4 is characterized in that: the length-to-diameter ratio of said twin screw single-order forcing machine (4) screw rod is L/D56～64: 1, and the stack length-to-diameter ratio of the two rank of said twin screw forcing machine is L/D80～104: 1.
6. EPP polypropylene foaming beads production line according to claim 1 is characterized in that: be provided with PLC or PPC automatic control system and Mechatronic control system in the said electrical control cabinet (1).
7. EPP polypropylene foaming beads production line according to claim 1 is characterized in that: said surface treatment mixing system (11) comprise have spray auxiliary agent and mix the high-speed mixer that mixes auxiliary agent, the vertical machine of mixing or horizontal mixed is mixed mixed machine.
8. EPP polypropylene foaming beads production line according to claim 1; It is characterized in that: said low temperature mixing system comprises low-temperature mixed machine (2); Said low-temperature mixed machine disposes the low-temperature protection device; Said low-temperature protection device comprises the lagging material that the pot volume surrounding of low temperature mixing system pastes, and the gas injection port that disposes at the pot cover place, and said gas injection port communicates with the nitrogen sealing coat that is arranged in the molten chamber of spices device.
9. EPP polypropylene foaming beads production line according to claim 1; It is characterized in that: comprise underwater pelletizer (5) in the said underwater cutpellet system; Said underwater pelletizer has template, and said template header cross section is circular, is inlaid with 10～20 φ 15～50mm cylinder shape wimet cylinders on the template header; Each wimet cylindrical cross-section has the discharge hole of φ 0.2-φ 0.5mm, and discharge hole quantity is 100-200; Said underwater cutpellet system also comprises water extracter (6), and said water extracter (6) comprises dehydration and vibration sieve and multi-layer water filtering net.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200910025677XA CN101585924B (en) | 2009-03-05 | 2009-03-05 | Production line of EPP polypropylene foaming beads |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200910025677XA CN101585924B (en) | 2009-03-05 | 2009-03-05 | Production line of EPP polypropylene foaming beads |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101585924A CN101585924A (en) | 2009-11-25 |
| CN101585924B true CN101585924B (en) | 2012-05-23 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN200910025677XA Expired - Fee Related CN101585924B (en) | 2009-03-05 | 2009-03-05 | Production line of EPP polypropylene foaming beads |
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| CN105707980B (en) * | 2016-03-08 | 2020-02-04 | 云南中烟工业有限责任公司 | Preparation method of cellulose acetate open-cell microporous foam material filter tip spice rod |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4977210A (en) * | 1988-08-13 | 1990-12-11 | Basf Aktiengesellschaft | Preparation of propylene/ethylene polymers of the toughened polypropylene type |
| CN201056040Y (en) * | 2007-06-27 | 2008-05-07 | 中国石油天然气股份有限公司 | Underwater granulation system of butylbenzene resin hot melt body |
| CN201198187Y (en) * | 2007-09-18 | 2009-02-25 | 大连市水利科学研究所 | Cellular plastic extruding system |
| CN201367409Y (en) * | 2009-03-05 | 2009-12-23 | 南京诚盟塑料机械实业有限公司 | EPP polypropylene expanded bead production line |
-
2009
- 2009-03-05 CN CN200910025677XA patent/CN101585924B/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4977210A (en) * | 1988-08-13 | 1990-12-11 | Basf Aktiengesellschaft | Preparation of propylene/ethylene polymers of the toughened polypropylene type |
| CN201056040Y (en) * | 2007-06-27 | 2008-05-07 | 中国石油天然气股份有限公司 | Underwater granulation system of butylbenzene resin hot melt body |
| CN201198187Y (en) * | 2007-09-18 | 2009-02-25 | 大连市水利科学研究所 | Cellular plastic extruding system |
| CN201367409Y (en) * | 2009-03-05 | 2009-12-23 | 南京诚盟塑料机械实业有限公司 | EPP polypropylene expanded bead production line |
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| CN101585924A (en) | 2009-11-25 |
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Owner name: JIANGSU CENMEN EQUIPMENT CO., LTD. Free format text: FORMER NAME: NANJING CENMEN MACHINERY LTD. |
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Address after: 210031, No. 22 Liuzhou North Road, Xiao Liu Industrial Zone, Nanjing hi tech Zone, Jiangsu Patentee after: JIANGSU CENMEN EQUIPMENT CORP., LTD. Address before: 210031, No. 22 Liuzhou North Road, Xiao Liu Industrial Zone, Nanjing hi tech Zone, Jiangsu Patentee before: Nanjing Cenmen Machinery Co., Ltd. |
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Granted publication date: 20120523 Termination date: 20180305 |
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| CF01 | Termination of patent right due to non-payment of annual fee |