CN108099157A - A kind of series circulation flow model plastic extruder - Google Patents
A kind of series circulation flow model plastic extruder Download PDFInfo
- Publication number
- CN108099157A CN108099157A CN201611045658.XA CN201611045658A CN108099157A CN 108099157 A CN108099157 A CN 108099157A CN 201611045658 A CN201611045658 A CN 201611045658A CN 108099157 A CN108099157 A CN 108099157A
- Authority
- CN
- China
- Prior art keywords
- extruder
- circulation flow
- flow model
- model plastic
- series circulation
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 239000004033 plastic Substances 0.000 title claims abstract description 43
- 229920003023 plastic Polymers 0.000 title claims abstract description 43
- 239000000945 filler Substances 0.000 claims abstract description 23
- 238000001125 extrusion Methods 0.000 claims abstract description 17
- 239000000463 material Substances 0.000 claims abstract description 17
- 230000000694 effects Effects 0.000 claims abstract description 16
- 239000000203 mixture Substances 0.000 claims abstract description 12
- 238000000034 method Methods 0.000 claims abstract description 6
- 238000002156 mixing Methods 0.000 claims description 4
- 230000007547 defect Effects 0.000 abstract description 2
- 229920001169 thermoplastic Polymers 0.000 abstract description 2
- 239000004416 thermosoftening plastic Substances 0.000 abstract description 2
- 238000002844 melting Methods 0.000 description 5
- 230000008018 melting Effects 0.000 description 5
- 238000000465 moulding Methods 0.000 description 4
- VGGSQFUCUMXWEO-UHFFFAOYSA-N Ethene Chemical compound C=C VGGSQFUCUMXWEO-UHFFFAOYSA-N 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 2
- 238000007906 compression Methods 0.000 description 2
- 230000006835 compression Effects 0.000 description 2
- 239000011256 inorganic filler Substances 0.000 description 2
- 229910003475 inorganic filler Inorganic materials 0.000 description 2
- 238000009413 insulation Methods 0.000 description 2
- 229920001684 low density polyethylene Polymers 0.000 description 2
- 239000004702 low-density polyethylene Substances 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 239000008188 pellet Substances 0.000 description 2
- 239000000843 powder Substances 0.000 description 2
- 238000007493 shaping process Methods 0.000 description 2
- 239000011343 solid material Substances 0.000 description 2
- 241000270722 Crocodylidae Species 0.000 description 1
- 238000005253 cladding Methods 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- LNNWVNGFPYWNQE-GMIGKAJZSA-N desomorphine Chemical group C1C2=CC=C(O)C3=C2[C@]24CCN(C)[C@H]1[C@@H]2CCC[C@@H]4O3 LNNWVNGFPYWNQE-GMIGKAJZSA-N 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000004744 fabric Substances 0.000 description 1
- 230000004927 fusion Effects 0.000 description 1
- 238000005469 granulation Methods 0.000 description 1
- 230000003179 granulation Effects 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 238000004064 recycling Methods 0.000 description 1
- 238000001175 rotational moulding Methods 0.000 description 1
- 238000010008 shearing Methods 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
Classifications
-
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Extrusion Moulding Of Plastics Or The Like (AREA)
Abstract
The defects of in order to overcome conventional plastic extruder, devises a kind of series circulation flow model plastic extruder.Series circulation flow model plastic extruder is in series by two single screw extrusion machines, two extruders are placed side by side, there are three runners between them, the effect of runner I is to make the connection end to end of two extruders, and the effect of runner II, III is that fused materials is made to flow back into First extruder from second extruder.Two extruders have each independent motor, hopper and extrusion, with manually can direct adjustment screw rotating speed.Series circulation flow model plastic extruder saves energy than conventional extruder, by selecting optimal regurgitant volume, changing screw speed and using suitable feed way, the high filling blend of thermoplastic can be only completed with one-step method, loading reaches as high as 70% in PE.The machine is suitable for the filling blend of plastics and plastics, plastics and filler.
Description
Technical field
The present invention relates to a kind of plastic extruder more particularly to a kind of series circulation flow model plastic extruders.
Background technology
Plastic material is due to high with specific strength and specific stiffness, and chemical stability is good, and insulation, adiabatic, sound insulation value is good, from
The excellent performances and processability such as greasy property is good, and formability and tinctorial property are good, can adapt to various environment and property
It can require, so as to occupy consequence in modern industry.The processing and forming of plastics is that plastic raw materials is made to be converted into product
Important step, although the history of plastics is not grown, it is domestic its molding research is put into it is very big, molding mode very into
Ripe, common molding mode has a variety of molding modes such as extrusion, injection, rotational moulding.Extrusion plastic extrusion molding production efficiency is high, throws
It provides less, is quick, being one of major way of plastic shaping.According to statistics, in plastic product forming processing, extrusion moulding product
Yield rank first.
Plastic extruder passes through the development of more than 100 years, derives twin-screw, multiscrew by original single screw rod, even
Without different types of machines such as screw rods.Plastic extruder（Host）Can with tubing, film, hold in both hands material, monofilament, flat filament, strap, squeeze net,
Plate（Piece）The various plastic shaping subsidiary engine matchings such as material, profile shapes, granulation, cable cladding, form various plastic extruding forming productions
Line produces various plastic products.Therefore, no matter now or in the future plastic extruding forming machinery, be all in plastic processing industry
One of to widely applied machine.
The content of the invention
The defects of the purpose of the invention is to overcome conventional plastic extruder, devises a kind of series circulation flowing shape
Expect extruder.
The technical solution adopted by the present invention to solve the technical problems is：
Series circulation flow model plastic extruder is in series by two single screw extrusion machines, and two extruders are placed side by side,
There are three runner between them, the effect of runner I is to make the connection end to end of two extruders, and the effect of runner II, III is to make melting
Material flows back into First extruder from second extruder.Two extruders have each independent motor, hopper and extrusion
Mouthful, with manually can direct adjustment screw rotating speed.
When the two screw rods are with identical synchronization increase, with the increase of screw speed, filler percentage composition is bright
Aobvious to increase, when highest loading is up to 35%, filling effect is good, and sample surfaces are smooth.
The rotating speed of the tandem extruder has an optimum ratio, is 30/70, highest loading is up to 50%, sample surfaces
Uniformly, it is good that effect is blended.
The First extruder is mainly based on the plasticizing of plastics, and second extruder to be based on being blended, with profit
In the reasonable employment of screw rod.
The tandem extruder extrusion diameter is variable.
The extruder, which can utilize, changes extrusion diameter, increases the method for extruder material pressure, to obtain higher
Filler percentage composition.
The beneficial effects of the invention are as follows：
Series circulation flow model plastic extruder saves energy than conventional extruder, by selecting optimal regurgitant volume, changing screw rod
Rotating speed and the suitable feed way of use, the high filling blend of thermoplastic can be only completed with one-step method, is filled out in PE
Charge reaches as high as 70%.The machine is suitable for the filling blend of plastics and plastics, plastics and filler.
Description of the drawings
The present invention is further described with reference to the accompanying drawings and examples.
Fig. 1 is series circulation flowing extruder action principle figure
Wherein, 1- hoppers 1,2- screw rods 1,3- heads Isosorbide-5-Nitrae-runner I, 5- drive 2,6- hoppers 2,7- runners III, 8- screw rods 2,9-
Head 2,10- runners II, 11- drivings 1.
Specific embodiment
Tandem extruder structure is as shown in Figure 1, it is in series by two single screw extrusion machines, and two extruders are side by side
It places, between them there are three runner, the effect of runner I is to make the connection end to end of two extruders, and the effect of runner II, III is
Fused materials is made to flow back into First extruder from second extruder.Two extruders have each independent motor, hopper
And extrusion, with manually can direct adjustment screw rotating speed.
Action principle:The pellet of plastics or powder are added in hopper 1, fusion plastification, then inputted in extruder 2, into
Single stage plastication, at the same time, portion's cloth fused materials can be from runners II, III back to the feeding section of extruder 1 and compression section.Melting
The recycling of material can function as follows:1. energy is saved since melting charging can adding from extruder 2 back to extruder 1
Expect section, compression section (maximum back amount is up to 30%), the heat entrained by this partial melting material can most promote the molten of solid material
Melt, the defeated flower for being conducive to pellet or powder is sent, and highest amount of energy saving is up to 10 as a result,.2. be conducive to plastics and inorganic fill out
When inorganic filler is added in from the hopper of extruder 2, the plastics and filler fully melted are common in extruder 2 for the blending of material
By a complete plasticizing process;Treat be not, when extruder 2 is using screw rod that fused materials and filler are grown altogether is suitable for,
It can be sufficiently mixed, reach highly filled purpose.In addition, when filler is added in by hopper 1, part is returned entrained by melting charge
Heat be also beneficial to the common rod of solid material and inorganic filler, save premixing device.
When two screw rods are with identical synchronization increase, with the increase of screw speed, filler percentage composition substantially increases,
When highest loading is up to 35%, filling effect is good, and sample surfaces are smooth.The 12nd two screw channel from the charge door of extruder 2
It is found during situation, when n1=n2=30 rev/min, the material of screw channel is in full state, when n1=n2=120 rev/min, in screw channel
Material is significantly to forerunner into bringing more fillers into therewith.Another kind, which is explained, to be thought, when screw speed increase, shearing force
Increase therewith, the work DPE for cutting quick property and filler is made preferably to mix, promotes loading increase still, with the increase of rotating speed,
The addition of LDPE also substantially increases, and therefore, cannot reach highest filling effect in this way.When screw rod 1 rotating speed n1=
30 revs/min, progressively classification increases the rotating speed n2 of screw rod 2, and when n2≤70 rev/min, with the increase of screw speed, filler adds in
Amount is apparent to be increased, and highest loading is up to 50%, and sample surfaces are uniform, and blending effect is good.As 70 revs/min of n2 ＞, with screw rod
The increase of rotating speed, filling adding amount tend towards stability, and are always maintained at 50%, squeeze out the surface of sample, with the increase of screw speed n1
It is more and more coarse, there is crocodile skin shape.It is thus regarded that the nl and n2 of tandem extruder have an optimum ratio, i.e. nl/n2=30/
70.Therefore, in order to increase filler percentage composition, it is impossible to unlimitedly increase n2, and optimum speed ratio should be found out, in optimum speed
The blending effect that not only ensure that is operated than under the conditions of, but also saves energy.Rotating ratio is kept in optimum state n1/n2=30/70
When, after changing the mode that feeds in hopper 1-be pre-mixed the LDPE of partial filler, added in from hopper 1, meanwhile, from
Hopper 2 also adds in filler, so filer content is promoted further to increase, as can be known from the results, with premixing grave doses in hopper
Increase, total filler amount rises to 65%.But with the increase of pre-add amount of filler in hopper 1, filling adding amount in hopper 2
It is decreased obviously, it is taken as that too many premix filler should not be added in hopper 1, and should first ensure that and maximum is added in from hopper 2
Amount of filler (50%), then adds in a small amount of filler from hopper 1 again.Make First extruder mainly based on the plasticizing of plastics, and
Second extruder is based on being blended, in favor of the reasonable employment of screw rod.Tandem extruder extrusion diameter is variable.In order to obtain
Higher filler percentage composition using extrusion diameter is changed, increases the method for extruder material pressure, and as a result filler is most
High percentage composition is up to 70%.This result illustrates that the machine can be used for high filling rod altogether.
Claims (6)
1. a kind of series circulation flow model plastic extruder is in series by two single screw extrusion machines, two extruders are side by side
It places, between them there are three runner, the effect of runner I is to make the connection end to end of two extruders, and the effect of runner II, III is
Fused materials is made to flow back into First extruder from second extruder；Two extruders have each independent motor, hopper
And extrusion, with manually can direct adjustment screw rotating speed.
2. series circulation flow model plastic extruder according to claim 1, it is characterized in that the two screw rods are with identical
Synchronization increase when, with the increase of screw speed, filler percentage composition substantially increases, and when highest loading is up to 35%, fills out
It is good to fill effect, sample surfaces are smooth.
3. series circulation flow model plastic extruder according to claim 1, it is characterized in that the tandem extruder
Rotating speed has an optimum ratio, is 30/70, and highest loading is up to 50%, and sample surfaces are uniform, and blending effect is good.
4. series circulation flow model plastic extruder according to claim 1, it is characterized in that the First extruder
Mainly based on the plasticizing of plastics, and second extruder to be based on being blended, in favor of the reasonable employment of screw rod.
5. series circulation flow model plastic extruder according to claim 1, it is characterized in that the tandem extruder squeezes
Outlet diameter is variable.
6. series circulation flow model plastic extruder according to claim 1, it is characterized in that the extruder is available
Change extrusion diameter, increase the method for extruder material pressure, to obtain higher filler percentage composition.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611045658.XA CN108099157A (en) | 2016-11-24 | 2016-11-24 | A kind of series circulation flow model plastic extruder |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611045658.XA CN108099157A (en) | 2016-11-24 | 2016-11-24 | A kind of series circulation flow model plastic extruder |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108099157A true CN108099157A (en) | 2018-06-01 |
Family
ID=62204826
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201611045658.XA Pending CN108099157A (en) | 2016-11-24 | 2016-11-24 | A kind of series circulation flow model plastic extruder |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108099157A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109016438A (en) * | 2018-08-06 | 2018-12-18 | 芜湖市旭辉电工新材料有限责任公司 | A kind of PTC exothermic material mixed melting extrusion method |
| CN111098423A (en) * | 2019-12-30 | 2020-05-05 | 北京路德永泰环保科技有限公司 | Solid-liquid mixed modifier production line |
| WO2020238461A1 (en) * | 2019-05-31 | 2020-12-03 | 金发科技股份有限公司 | Pre-impregnation side feeding device and method |
| CN114605849A (en) * | 2022-03-24 | 2022-06-10 | 华南农业大学 | Manufacturing method of wood-plastic granules and composite material with ultrahigh wood fiber content |
-
2016
- 2016-11-24 CN CN201611045658.XA patent/CN108099157A/en active Pending
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109016438A (en) * | 2018-08-06 | 2018-12-18 | 芜湖市旭辉电工新材料有限责任公司 | A kind of PTC exothermic material mixed melting extrusion method |
| WO2020238461A1 (en) * | 2019-05-31 | 2020-12-03 | 金发科技股份有限公司 | Pre-impregnation side feeding device and method |
| CN111098423A (en) * | 2019-12-30 | 2020-05-05 | 北京路德永泰环保科技有限公司 | Solid-liquid mixed modifier production line |
| CN111098423B (en) * | 2019-12-30 | 2021-09-14 | 北京路德永泰环保科技有限公司 | Solid-liquid mixed modifier production line |
| CN114605849A (en) * | 2022-03-24 | 2022-06-10 | 华南农业大学 | Manufacturing method of wood-plastic granules and composite material with ultrahigh wood fiber content |
| CN114605849B (en) * | 2022-03-24 | 2022-11-11 | 华南农业大学 | Manufacturing method of wood-plastic granules and composite material with ultrahigh wood fiber content |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20180601 |
|
| WD01 | Invention patent application deemed withdrawn after publication |