CN108748947A - A kind of mixing extrusion molding all-in-one machine of modifying plastics technique - Google Patents
A kind of mixing extrusion molding all-in-one machine of modifying plastics technique Download PDFInfo
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- CN108748947A CN108748947A CN201810538205.3A CN201810538205A CN108748947A CN 108748947 A CN108748947 A CN 108748947A CN 201810538205 A CN201810538205 A CN 201810538205A CN 108748947 A CN108748947 A CN 108748947A
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Abstract
The invention discloses a kind of mixing extrusion molding all-in-one machines of modifying plastics technique, including mixing chamber, feeding room, extrusion molding room, melter, aspirating chamber, the mixing chamber is taper mixing chamber, the roof of the mixing chamber is equipped with feed inlet, lower wall is equipped with discharge port, it is equipped with feeding room below the discharge port, dispersal device is equipped in the feeding room；The lower section of the feeding room is equipped with extrusion molding room；Double-screw is equipped in the extrusion molding room, the Double-screw connects extrusion molding motor；The periphery of the extrusion molding room is equipped with melter, and heater is equipped in the melter；The extrusion molding room connects aspirating chamber, and the aspirating chamber connects aspiration pump by pipeline.Structure of the invention setting is rationally novel, and the cooperation of mixing chamber and feeding room, extrusion molding room is the important link for ensureing quality and increasing yield, without improving rotating speed, realizes the effect of good shearing dispersed material.Modifying plastics effect is good.
Description
Technical field
The present invention relates to plastics modification technology fields, more particularly to the mixing extrusion molding all-in-one machine of modifying plastics technique.
Background technology
Plastics are, by high-molecular compound made of addition polymerization or polycondensation polymerized, to be commonly called as plastics using monomer as raw material
(plastics) or resin (resin) ingredient and body styles can freely, be changed, by synthetic resin and filler, plasticizer, steady
Determine the additives such as agent, lubricant, colorant composition.The main component of plastics is resin.
Plastics are broadly divided into：Several major class such as PE (polyethylene), PP (polypropylene), PVC (polyvinyl chloride).Wherein PP (poly- third
Alkene) it is a kind of widely used plastics, there is higher impact resistance, engineering properties is tough, resists a variety of organic solvents and soda acid
Corrosion, is mainly used for the production of various long and short polypropylene fibers, for producing the use such as polypropylene woven bag, food bag, injection-molded item
In the fire-retardant parts for producing electric appliance, telecommunication, lamp decoration, lighting apparatus and television set, daily life is mainly used for soya-bean milk bottle, excellent junket
Newborn bottle, fruit drink bottle, micro-wave oven cutlery box.
Modifying plastics are resin to be improved or increased by modes such as physics, chemistry, machineries its function, electromagnetism photo-thermal,
Ageing-resistant, fire-retardant, mechanical performance etc. reach the works such as function, the reduction plastic products cost that special environment condition enhancing uses
With.
Wherein, PP materials have light weight, heat-resist, and temperature is used for a long time up to 100-120 degrees Celsius, is general plastic
The material that can be uniquely boiled in boiling water in material, and the stability of plastics is good, it is harmless, therefore be that articles for daily use are put safely
The plastic material of the heart.But PP materials have the following problems when in use：1, resistance to low temperature is poor, and brittle temperature is subzero 30-
Subzero 10 degrees Celsius, when placing refrigerator cold-storage such as soya-bean milk bottle, Yogurt bottle, fruit drink bottle, micro-wave oven cutlery box, it is easy embrittlement,
The service life of plastics is short；Low temperature brittleness is the major defect of PP；Even if using at normal temperatures, indoor placement will be held for 4 months
It is brittle；2, the equal permeability of PP materials is more demanding, due to being mainly used as the Packaging Bottle of food, therefore it is required that plastic products color and luster
Unanimously, translucency is consistent；Height is required to the degree of mixing of raw material in production, there is not allowed that hot spot, color and luster or translucency differ
The phenomenon that cause, and then influence the use of PP plastics.Therefore, the main improvement of PP modifying plastics is to improve the fragility of plastics
And uniformity.Therefore PP is modified the toughness that direction all concentrates on improving PP.
Using extruding machine in the prior art when as PP modifying plastics extruding machines, have the following problems：1, increase
Tough dose can effectively improve toughness, but the Particle size requirements of toughener are the smaller the better, the dispersion effect of the tiny then elastomer of grain size
Higher, specific surface area is also bigger, and the toughness that material is shown is also better, but the toughener of existing extruding machine point
It is poor to dissipate property, it is difficult to achieve the effect that modifying plastics；2, shock resistance PP materials to be improved then have shearing in granulation process very high
Dependence, PP material athermal materials, improve temperature to the mobility of material without positive effect, to enable material in granulation process
Preferable flowing just needs to improve screw speed, but improves requirement height of the rotating speed of screw rod to motor device, therefore improves and cut
The difficulty cut is larger, not uniform enough the problem very headache of mixing, it is difficult to effective solution.
Invention content
The technical problem to be solved by the present invention is to, 1, increase toughener and can effectively improve toughness, but toughener
Particle size requirements are the smaller the better, and the dispersion effect of the tiny then elastomer of grain size is higher, and specific surface area is also bigger, what material was shown
Toughness is also better, but the toughener dispersibility of existing extruding machine is poor, it is difficult to achieve the effect that modifying plastics；2,
Shock resistance PP materials to be improved then have very high dependence, PP material athermal materials to improve temperature pair shearing in granulation process
The mobility of material just needs to improve screw speed, still without positive effect to enable in granulation process material preferably flow
It is high to improve requirement of the rotating speed of screw rod to motor device, therefore the difficulty for improving shearing is larger, not uniform enough the problem ten of mixing
Ache separately, it is difficult to effective solution.
In order to solve the above technical problems, the present invention provides a kind of mixing extrusion molding all-in-one machine of modifying plastics technique, including
Mixing chamber, feeding room, extrusion molding room, melter, aspirating chamber, the mixing chamber are taper mixing chamber, and the mixing chamber is internally provided with
One end of long spire bar, short screw rod, Swing Arm, drive link, the Swing Arm connects long spire bar, and the other end connects short spiral
Bar connects driven rod at the center of the Swing Arm, and the driven rod connects hybrid electric motor, and the hybrid electric motor is located at mixing chamber
Top；The roof of the mixing chamber is equipped with feed inlet, and lower wall is equipped with discharge port, feeding room, institute are equipped with below the discharge port
It states and is equipped with dispersal device in feeding room；The bulk material device includes shaft, impeller, and the both ends of the shaft are plugged on feeding
On the locular wall of room, impeller is fixed in the shaft；The lower section of the feeding room is equipped with extrusion molding room；It is equipped in the extrusion molding room
Double-screw, the Double-screw connect extrusion molding motor；The periphery of the extrusion molding room is equipped with melter, is equipped in the melter
Heater；The extrusion molding room connects aspirating chamber, and the aspirating chamber connects aspiration pump by pipeline.
The technical solution that the present invention further limits is：The outer wall of the mixing chamber is equipped with circulating water cooling device, described
Circulating water cooling device includes cooling chamber, and the cooling chamber is equipped with water inlet, water outlet.The setting of circulating water cooling device, can
It realizes effective cooling, avoids the caking of material in mixed process agglomerating, be conducive to the dispersion of material, and reduce temperature to material
Influence, influence of the heat to heat sensitive material, ensures being normally carried out for extrusion molding when reducing mixing.
The technical solution that the present invention further limits is：Cooling fin is welded on the outer wall of the cone-type mixer.Cooling fin
Setting can also realize effective cooling.
The technical solution that the present invention further limits is：The hypomere of the mixing chamber is equipped with ultrasound room, in the ultrasound room
Equipped with ultrasonic generator.The effect of ultrasonic generator is：The bottom of effective concussion taper mixing chamber, avoids the object mixed
Material lumps in bottom, and the material mixed is avoided to be attached on the locular wall of mixing chamber.Meanwhile further, dispersed material.
The technical solution that the present invention further limits is：The heater is ring heater, is equipped in the heater
Eddy current coil, the eddy current coil wrap up insulation heat preservation layer.The setting of ring heater is, it can be achieved that uniform fused materials, object
Material is uniform, and heating speed is fast, saves energy consumption.
The technical solution that the present invention further limits is：The aspirating chamber is arranged two.The setting of aspirating chamber essentially consists in：
Material will produce water vapour during mixed melting, vapor exist in extrusion molding room, be dissolved in lead to extrusion molding when, in plastics
Portion generates bubble, while influencing being normally carried out for extrusion molding, and the setting of two aspirating chambers can quickly and effectively realize pumping, reduces
The indoor vapor of extrusion molding.
The technical solution that the present invention further limits is：Helical blade, the helical-blade are equipped on the Double-screw
The hand of spiral of piece is consistent, and is staggered.The setting in the same direction of Double-screw, can be improved dispersion effect of the screw rod to material,
Meanwhile being staggered, it can further improve dispersion effect.
The technical solution that the present invention further limits is：Retarder is equipped between the hybrid electric motor and driven rod.It reduces
The setting of device is conducive to adjust mixed rotating speed, rationally the mixed intensity of effective control.
The technical solution that the present invention further limits is：The mixing chamber is additionally provided with support retaining frame, extrusion molding room bottom
Equipped with mounting platform；The support retaining frame connects mounting platform.Support retaining frame, mounting platform play good supporting role.
The beneficial effects of the invention are as follows：
(1) in the present invention, the setting of mixing chamber realizes that the effective mixing to PP plastic raw materials disperses, reaches good
Dispersibility so that material is uniformly mixed.By hybrid electric motor be long spire bar, short screw rod provides power, and taper mixing chamber is set
It sets on the one hand, is conducive to quickly mix, on the other hand, the material mixed can be entered directly on extruding machine from bottom and be squeezed
Modeling, easy to operate, the setting of long spire bar, short screw rod connection Swing Arm is conducive to quickly mix, and avoid mixed material
It is adsorbed on mixing locular wall.
(2) in the present invention, the setting of feeding room, further dispersed material, the material mixed drops into dispersal device
On, under the action of the effect of gravity and self inertia, material can drive the shaft of packaging device to rotate, what material was preferably fallen
Material is fallen subsequently into extruding machine, and the setting of dispersal device avoids the material mixed from being entered in extruding machine at what is sticked together, real
The effect of existing dispersed material so that the PP raw materials mixing for mixing extrusion molding is more uniform, and dispersibility is more preferable.
(3) in the present invention, the setting of extrusion molding room is conducive to quick extrusion moulding；Due to the setting of Double-screw, material
Good dispersion, while melting heating, material melts in extrusion molding room, then extrusion moulding.Meanwhile extrusion molding room is vacuumized,
It extracts the indoor vapor of extrusion molding out, avoids generating micro-bubble when melting, the PP materials of extrusion molding are more uniformly distributed.
It (4), can be mixed due to needing to add a variety of auxiliary agents such as toughener, dispersant during modifying plastics in the present invention
The addition of the feed inlet of room stage by stage is closed, enhances the uniformity of mixing, while the grain size of the auxiliary agents such as toughener is smaller, dispersibility
It is good；Achieve the effect that good modifying plastics.For usual toughener grain size in 5um, then the toughness that material is shown is relatively more prominent
Go out；The shearing of the grain size of toughener effectively can be distributed to 5um by the present invention, realize good toughening effect.
(5) it in the present invention, without improving the performance of motor, that is, is not necessarily to improve rotating speed, can also realize good shearing dispersion
The effect of material.
Description of the drawings
Fig. 1 is the structural diagram of the present invention；
Fig. 2 is the structural schematic diagram (band supporting rack) of the present invention；
Fig. 3 is the mixing chamber structural schematic diagram of the present invention；
Fig. 4 is the dispersal device structural schematic diagram of the present invention；
Fig. 5 is the dispersal device sectional view of the present invention；
Fig. 6 is the extrusion molding room sectional view of the present invention；
The structural schematic diagram of Fig. 7 embodiments 2.
Wherein：100, mixing chamber；200, feeding room；300, extrusion molding room；400, melter；500, aspirating chamber；1, long spire
Bar；2, short screw rod；3, Swing Arm；4, drive link；5, hybrid electric motor；6, feed inlet；7, discharge port；71, discharge valve；8, divide
It is in bulk to set；81, shaft；82, impeller；83, nut；9, Double-screw；91, helical blade；10, extrusion molding motor；11, heater；
101, eddy current coil；102, insulation heat preservation layer；12, pipeline；13, aspiration pump；14, circulating water cooling device；141, cooling chamber；
142, water inlet；143, water outlet；15, cooling fin；16, retarder；17, retaining frame is supported；18, mounting platform；19, column；20,
Ultrasound room；21, ultrasonic generator；22, extrusion.
Specific implementation mode
Embodiment 1
A kind of mixing extrusion molding all-in-one machine of modifying plastics technique provided in this embodiment, structure as shown in Figure 1, Figure 2, Fig. 3, Fig. 4,
The mixing extrusion molding all-in-one machine of Fig. 5, modifying plastics technique shown in fig. 6, including mixing chamber 100, feeding room 200, extrusion molding room 300,
Melter 400, aspirating chamber 500, mixing chamber are taper mixing chamber, and mixing chamber is internally provided with long spire bar 1, short screw rod 2, waves
One end of arm 3, drive link 4, Swing Arm connects long spire bar, and the other end connects short screw rod, connects and pass at the center of Swing Arm
Bar, driven rod is sent to connect hybrid electric motor 5, hybrid electric motor is located at the top of mixing chamber；The roof of mixing chamber is equipped with feed inlet 6, under
Wall is equipped with discharge port 7, and discharge port is equipped with discharge valve 71；It is equipped with feeding room below discharge port, dispersion dress is equipped in feeding room
Set 8；Bulk material device includes shaft 81, impeller 82, and the both ends of shaft are plugged on the locular wall of feeding room, and leaf is fixed in shaft
Wheel；The lower section of feeding room is equipped with extrusion molding room；Double-screw 9 is equipped in extrusion molding room, Double-screw connects extrusion molding motor 10；Extrusion molding room
Periphery be equipped with melter, equipped with heater 11 in melter；Extrusion molding room connects aspirating chamber, and aspirating chamber is connected by pipeline 12 and taken out
Air pump 13.
Meanwhile in the present embodiment, the impeller of dispersal device is arranged 8, and is uniformly arranged in the outside of shaft, can adopt
Impeller is arranged in shaft with the mode of welding in the prior art or grafting.The mode of welding so that impeller and shaft
It is connected firmly, is hardly damaged, the mode of grafting so that the convenient connection with shaft dismounting of impeller is convenient for changing.Art technology
Other connection types can also be used in personnel, and impeller is connected in shaft.
In the present embodiment, the junction of the grafting between shaft and feeding room is equipped with sealing ring, is equipped on feeding room
For the turn hole that shaft is inserted into, it is equipped with sealing ring between shaft and turn hole, and be equipped with lubricating oil in sealing ring, lubrication is facilitated to turn
It is dynamic.Meanwhile deflecting during being rotated in order to avoid shaft, shaft can be passed through turn hole, and in two endpoints of shaft
Place's setting nut 83.
In the present embodiment, the outer wall of mixing chamber is equipped with circulating water cooling device 14, and circulating water cooling device includes cooling
Room 141, cooling chamber are equipped with water inlet 142, water outlet 143.The setting of circulating water cooling device is, it can be achieved that effective cooling, keeps away
The caking for exempting from material in mixed process is agglomerating, is conducive to the dispersion of material, and reduces influence of the temperature to material, when reducing mixing
Influence of the heat to heat sensitive material, ensures being normally carried out for extrusion molding.
In the present embodiment, retarder 16 is equipped between hybrid electric motor and driven rod.The setting for reducing device, is conducive to adjust
Mixed rotating speed, it is rationally effective to control mixed intensity.
In the present embodiment, mixing chamber is additionally provided with support retaining frame 17, and extrusion molding room bottom is equipped with mounting platform 18；Support retaining frame
Connect mounting platform.Support retaining frame, mounting platform play good supporting role.In the present embodiment, extrusion molding room and installation
Column 19 is additionally provided between platform.The setting of column is conducive to the installation of extrusion molding room.
In the present embodiment, the hypomere of mixing chamber is equipped with ultrasound room 20, and ultrasonic generator 21 is equipped in ultrasound room.Ultrasound hair
The effect of raw device is：The bottom of effective concussion taper mixing chamber, avoids the material mixed from luming in bottom, avoids mixing
Good material is attached on the locular wall of mixing chamber.Meanwhile further, dispersed material.
In the present embodiment, heater is ring heater, and eddy current coil 101, eddy current coil package are equipped in heater
Insulation heat preservation layer 102.The setting of ring heater is, it can be achieved that uniform fused materials, material is uniform, and heating speed is fast, section
About energy consumption.
Certainly, also have using heaters such as electric heater in the prior art, microwave applicators, to realize effective heating
Melting.
In the present embodiment, can cooling device be set in extrusion molding room extrusion molding mouth, cooling device can be used cold in the prior art
But semiconductor cooling in the prior art can also be used in water cooling.
In the present embodiment, aspirating chamber is arranged two.The setting of aspirating chamber essentially consists in：Process of the material in mixed melting
In will produce water vapour, vapor exist in extrusion molding room, be dissolved in lead to extrusion molding when, plastics inner generates bubble, influences simultaneously
Extrusion molding is normally carried out, the setting of two aspirating chambers, can quickly and effectively realize pumping, reduces the indoor vapor of extrusion molding.
In the present embodiment, helical blade 91 is equipped on Double-screw, the hand of spiral of helical blade is consistent, and staggeredly
Setting.Dispersion effect of the screw rod to material can be improved in the setting in the same direction of Double-screw, meanwhile, it is staggered, it can be further
Improve dispersion effect.
In the present embodiment, extrusion molding room is equipped with extrusion 22, and extrusion is equipped with cooling device.
In the present embodiment, temperature detector is equipped in melter, temperature detector can detect the heating temperature of heater,
And the heating temperature of heater is adjusted according to molten condition.
In the present embodiment, liquid is equipped with temperature detector in feeding room, and temperature detector can be used for detecting mixed
Temperature of charge can effectively adjust the heating temperature of heater according to mixed temperature of charge.It, can when mixing temperature is higher
Heating temperature can be suitably turned up when mixing temperature is relatively low in the appropriate heating temperature that reduces.Realize reasonable efficient melting raw material.
In the present embodiment, hybrid electric motor, extrusion molding motor, heater, ultrasonic generator, temperature detector are all connected with electrically
System, by electrical system control.Realize automation control.
Embodiment 2
A kind of mixing extrusion molding all-in-one machine of modifying plastics technique as shown in Figure 2；It in the present embodiment, can also be mixed in taper
Cooling fin 15 is welded on the outer wall of conjunction machine.The setting of cooling fin and circulating water cooling device is, it can be achieved that effective cooling, avoids mixing
The caking of material is agglomerating during conjunction, is conducive to the dispersion of material, and reduces influence of the temperature to material, heat when reducing mixing
Influence to heat sensitive material ensures being normally carried out for extrusion molding.Also cooling fin can be separately provided in the outer wall of mixing chamber, is not provided with
Circulating water cooling device also can reach certain heat dissipation effect, save water resource.
Cooling fin can be used iron plate, and iron plate material source is wide and perfect heat-dissipating.
Other structures are consistent with embodiment 1, are no longer described in detail in the present embodiment.
Embodiment 3
The course of work of the present invention：By PP plastic raw materials：Resin, toughener, conditioning agent, stabilizer, lubricant, foaming
Agent, toughener, age resister, coupling agent are added to mixing in mixing chamber, then through long spire bar, short screw rod in mixing chamber
Stirring, realize quickly mixing, after the completion of mixing, open the valve of discharge port, material drops into feeding room, then through feeding room
Interior dispersal device is broken up, and extrusion molding room is entered, and material is in extrusion molding room, further through Double-screw dispersion mixing, and
Under the heat effect of heater, melting forms molten condition, is then squeezed out from the extrusion of extrusion molding room, when squeezing out, can be used
Cooling device cools down, also can natural cooling, after the completion of cooling, molding.
In addition to the implementation, the present invention can also have other embodiment.It is all to use equivalent substitution or equivalent transformation shape
At technical solution, fall within the scope of protection required by the present invention.
Claims (9)
1. a kind of mixing extrusion molding all-in-one machine of modifying plastics technique, it is characterised in that：Including mixing chamber (100), feeding room
(200), extrusion molding room (300), melter (400), aspirating chamber (500), the mixing chamber (100) are taper mixing chamber (100), institute
It states mixing chamber (100) and is internally provided with long spire bar (1), short screw rod (2), Swing Arm (3), drive link (4), the Swing Arm
(3) one end connection long spire bar (1), the other end connect short screw rod (2), transmission are connected at the center of the Swing Arm (3)
Bar, the driven rod connection hybrid electric motor (5), the hybrid electric motor (5) are located at the top of mixing chamber (100)；The mixing chamber
(100) roof is equipped with feed inlet (6), and lower wall is equipped with discharge port (7), feeding room (200) are equipped with below the discharge port (7),
Dispersal device (8) is equipped in the feeding room (200)；The bulk material device includes shaft (81), impeller (82), described to turn
The both ends of axis (81) are plugged on the locular wall of feeding room (200), and impeller (82) is fixed on the shaft (81)；The feeding
The lower section of room (200) is equipped with extrusion molding room (300)；Double-screw (9), the Double-screw (9) are equipped in the extrusion molding room (300)
Connect extrusion molding motor (10)；The periphery of the extrusion molding room (300) is equipped with melter (400), is equipped with and adds in the melter (400)
Hot device (11)；Extrusion molding room (300) the connection aspirating chamber (500), the aspirating chamber (500) connect aspiration pump by pipeline (12)
(13)。
2. the mixing extrusion molding all-in-one machine of modifying plastics technique according to claim 1, it is characterised in that：The mixing chamber
(100) outer wall is equipped with circulating water cooling device (14), and the circulating water cooling device (14) includes cooling chamber (141), described
Cooling chamber (141) is equipped with water inlet (142), water outlet (143).
3. the mixing extrusion molding all-in-one machine of modifying plastics technique according to claim 1, it is characterised in that：The taper mixing
Cooling fin (15) is welded on the outer wall of machine.
4. the mixing extrusion molding all-in-one machine of modifying plastics technique according to claim 2, it is characterised in that：The mixing chamber
(100) hypomere is equipped with ultrasound room (20), and ultrasonic generator (21) is equipped in the ultrasound room (20).
5. the mixing extrusion molding all-in-one machine of modifying plastics technique according to claim 1, it is characterised in that：The heater
(11) it is ring heater (11), eddy current coil (101), eddy current coil (101) package is equipped in the heater (11)
Insulation heat preservation layer (102).
6. the mixing extrusion molding all-in-one machine of modifying plastics technique according to claim 1, it is characterised in that：The Double-screw
(9) helical blade (91) is equipped on, the hand of spiral of the helical blade (91) is consistent, and is staggered.
7. the mixing extrusion molding all-in-one machine of modifying plastics technique according to claim 1, it is characterised in that：The hybrid electric motor
(5) retarder (16) is equipped between driven rod.
8. the mixing extrusion molding all-in-one machine of modifying plastics technique according to claim 6, it is characterised in that：The mixing chamber
(100) it is additionally provided with support retaining frame (17), extrusion molding room (300) bottom is equipped with mounting platform (18)；The support retaining frame (17)
Connect mounting platform (18).
9. the mixing extrusion molding all-in-one machine of modifying plastics technique according to claim 1, it is characterised in that：The aspirating chamber
(500) it is arranged two.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810538205.3A CN108748947A (en) | 2018-05-30 | 2018-05-30 | A kind of mixing extrusion molding all-in-one machine of modifying plastics technique |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810538205.3A CN108748947A (en) | 2018-05-30 | 2018-05-30 | A kind of mixing extrusion molding all-in-one machine of modifying plastics technique |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108748947A true CN108748947A (en) | 2018-11-06 |
Family
ID=64004308
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810538205.3A Pending CN108748947A (en) | 2018-05-30 | 2018-05-30 | A kind of mixing extrusion molding all-in-one machine of modifying plastics technique |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN111196023A (en) * | 2020-01-08 | 2020-05-26 | 常州冠荣新型包装材料有限公司 | Production line of LDPE cystosepiment |
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| CN202179947U (en) * | 2011-08-17 | 2012-04-04 | 成都世纪投资有限公司 | Cantilever conical double-spiral mixer |
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Application publication date: 20181106 |