CN105128311B - Double screw extruder for EVA/PE crosslinked foaming materiel machinings - Google Patents
Double screw extruder for EVA/PE crosslinked foaming materiel machinings Download PDFInfo
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- CN105128311B CN105128311B CN201510572674.3A CN201510572674A CN105128311B CN 105128311 B CN105128311 B CN 105128311B CN 201510572674 A CN201510572674 A CN 201510572674A CN 105128311 B CN105128311 B CN 105128311B
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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
- B29C48/50—Details of extruders
- B29C48/505—Screws
- B29C48/53—Screws having a varying channel depth, e.g. varying the diameter of the longitudinal screw trunk
-
- 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
- B29C48/285—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
- 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
- B29C48/402—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 the screws having intermeshing parts
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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
- B29C48/625—Screws characterised by the ratio of the threaded length of the screw to its outside diameter [L/D ratio]
-
- 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
- B29C48/64—Screws with two or more threads
- B29C48/655—Screws with two or more threads having three or more threads
-
- 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
- B29C48/68—Barrels or cylinders
- B29C48/682—Barrels or cylinders for twin screws
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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
- B29C48/92—Measuring, controlling or regulating
-
- 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
- B29C2948/00—Indexing scheme relating to extrusion moulding
- B29C2948/92—Measuring, controlling or regulating
- B29C2948/92504—Controlled parameter
- B29C2948/92609—Dimensions
- B29C2948/92657—Volume or quantity
-
- 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
- B29C2948/00—Indexing scheme relating to extrusion moulding
- B29C2948/92—Measuring, controlling or regulating
- B29C2948/92819—Location or phase of control
- B29C2948/92828—Raw material handling or dosing, e.g. active hopper or feeding device
Abstract
The present invention relates to the double screw extruder for EVA/PE chemical crosslinking foamed material processing, it is made of transmission device, main drawing-in device, extruding cavity, heating and cooling system and control system；Feed inlet is in one end of extruding cavity and is provided with main drawing-in device；Parallel equidirectional two-screw is installed, twin-screw is divided into nine sections, and installs corresponding transportation section, mixing section and kneading block in respective stage in institute's extruding cavity；Pass through reasonable disposition transportation section, mixing section and kneading block, form the dual-screw-stem machine for meeting EVA foaming crosslinking production technologies, the autonomous drawing-in device in extruding cavity is equipped with again, realize that on-line automatic feeding, feeding, a component batch mixing of being continuously finished is uniform, the EVA foaming plates tensile strength produced is good, elongation is good, foam structure is fine and closely woven uniformly, and properties of product and color stability between the multiple batches of quantity-produced；The easy to operate of dual-screw-stem machine, production efficiency are high, can effectively control industrial production labor cost.
Description
Technical field
The production equipment field for being chemically crosslinked foamed material processing is blended the present invention relates to EVA, PE or both, especially
Refer to the double screw extruder for EVA/PE crosslinked foaming materiel machinings.
Background technology
EVA is the random copolymer of ethene and vinyl acetate.EVA resin has good flexibility, pliability, anti-ageing
Change and resistance to ozone intensity is good, therefore purposes is very extensive, has obtained quick development.The method that EVA complexs produce includes thing
Manage foaming and chemical blowing process.Chinese patent（Publication number CN1982363A, publication date 2007.06.20）Disclose a kind of suction
The production method of EVA foamed profiles is shaken, including：Mixing, be kneaded mixing, mill remix and carry out beam is thin, plate is made or
Grain, carry out moulded from foam or injection compression foaming, part foaming plate grinding and cutting, carry out second time of foaming.Above-mentioned production technology is outstanding
The process segment of its early period of foaming, there are following defect：（1）, each process will be carried out in relevant device, complex production process
And it is cumbersome, waste a large amount of manpowers；（2）, kneading machine required for the operative skill and qualification of operator it is high；（3）It is kneaded
Machine belongs to batch production equipment, it is necessary to is kneaded etc. in batches；Drawbacks described above make it that the low production efficiency of foamed profile is small
And it is difficult to obtain the EVA foamed profiles of performance stabilization；Labor cost needed for production can also be increased at the same time and take production area
Greatly.
The content of the invention
The purpose of the present invention is to overcome the above shortcomings and to provide one kind automation, be conducive to EVA/PE crosslinked foaming materials
The serialization of processing, ensure foaming quality is moderately good, improve production efficiency be used for EV/PEA crosslinked foaming materiel machinings
Double screw extruder.
To achieve the above object, technical solution of the invention is：For the double of EVA/PE crosslinked foaming materiel machinings
Screw extruder, is mainly made of transmission device, main drawing-in device, extruding cavity, heating and cooling system and control system；Extruding cavity
One end for feed inlet and main drawing-in device is installed；Parallel equidirectional two-screw, the extruding cavity are installed in institute's extruding cavity
It is divided into nine sections, respectively first segment extruding cavity, second, which squeeze, saves out chamber, Section of three extruding cavity, four extruding cavities of section, Section of five extrusion
Chamber, Section of six extruding cavity, Section of seven extruding cavity, Section of eight extruding cavity and die orifice section；The twin-screw corresponds to first segment extruding cavity
Position be the first transportation section；The position that the twin-screw corresponds to the second section extruding cavity is the first mixing section；The twin-screw pair
The position for answering Section of three extruding cavity is the first kneading block；The position that the twin-screw corresponds to Section of four extruding cavity is kneaded for second
Section；The position that the twin-screw corresponds to Section of five extruding cavity is the second kneading block；Section of six extruding cavity of the twin-screw correspondence
Position is the second transportation section；The position that the twin-screw corresponds to Section of seven extruding cavity is followed successively by the 3rd mixing section and the 3rd kneading
Section；The position that the twin-screw corresponds to Section of eight extruding cavity is followed successively by the 4th kneading block, the 4th mixing section and the 5th kneading block.
Preferably, first kneading block, the second kneading block, the 3rd kneading block, the 4th kneading block are pinched by several
Module composition is closed, it is 30 °, 45 °, 60 °, 90 ° of kneading module that first kneading block, which is provided with stagger arrangement angle,；Described second mediates
It is 45 °, 60 °, 90 ° of kneading module that section, which is provided with stagger arrangement angle,；3rd kneading block and the 4th the kneading block installation is all stagger arrangement
Angle is 45 ° of kneading module.
Preferably, the draw ratio of the twin-screw is 46:1-48:1.
Preferably, it is equipped with side drawing-in device positioned at Section of three extruding cavity to the position of Section of six extruding cavity.
Preferably, the side drawing-in device is installed on Section of six extruding cavity.
Preferably, the main drawing-in device and side drawing-in device all claim to be weightless.
By using above-mentioned technical solution, the beneficial effects of the invention are as follows：The present invention passes through reasonable disposition transportation section, mixed
Section and kneading block are refined, forms the dual-screw-stem machine for the production technology for meeting EVA foaming crosslinking materiel machinings, then is equipped with extrusion
The autonomous drawing-in device of chamber, realize it is on-line automatic be continuously finished feeding, feeding, a component batch mixing uniformly, batch mixing plasticizing, produce
Next EVA foaming plates tensile strength is good, elongation is good, and foam structure is fine and closely woven uniformly, and between the multiple batches of quantity-produced
Properties of product and color stability are good；The occupying little space, is easy to operate of dual-screw-stem machine, production efficiency are high, can effectively control industry
Input of labor cost, while energy consumption and pollution can also be reduced, ensure the cleaning of workshop.This structure is also used for PE
（Polyethylene）Or PE is processed with the foaming of EVA blended cross linkings.
Brief description of the drawings
Fig. 1 is the structure diagram of the present invention；
Fig. 2 is the structure diagram of twin-screw；
Main Reference Numerals explanation：
（1st, control system；2nd, transmission device；3rd, main drawing-in device；4th, side drawing-in device；5th, extruding cavity；51st, first segment squeezes
Go out chamber；52nd, the second section extruding cavity；53rd, Section of three extruding cavity；54th, Section of four extruding cavity；55th, Section of five extruding cavity；56th, the 6th
Save extruding cavity；57th, Section of seven extruding cavity；58th, Section of eight extruding cavity；59th, modular segment；61st, the first transportation section；62nd, the second conveying
Section；71st, the first mixing section；72nd, the second mixing section；73rd, the 3rd mixing section；74 the 4th mixing sections；81st, the first kneading block；82nd,
Two kneading blocks；83rd, the 3rd kneading block；84 the 4th kneading blocks；85 the 5th kneading blocks）.
Embodiment
The present invention is further illustrated below in conjunction with the drawings and specific embodiments.
As shown in Figure 1, dual-screw-stem machine is mainly by transmission device 2, extruding cavity 5, heating and cooling system（It is not shown）And control
System 1 forms.Heating and cooling system is provided on 5 outer wall of extruding cavity, using the mode of electrical heating and water cooling quick and precisely
Adjust the temperature in extruding cavity 5.Motor and the reduction box composition that transmission device 2 uses, for driving double spiral shells in extruding cavity
Bar rotates, and above main composition is all the prior art using double screw extruder, while according to the prior art also in extruding cavity 5
Inside also set up extract system.This structure is provided with main drawing-in device 3 in the initiating terminal of extruding cavity, and middle part is provided with side drawing-in device
4.The main drawing-in device 3 and side drawing-in device 4 are claimed using weightless, are a kind of weighing-appliances for being interrupted feed continuous discharge, by
In vector control carried out in hopper, can reach higher control accuracy dosing, structure is easy to seal again.Transmission device
2nd, main drawing-in device 3, side drawing-in device 4, heating and cooling system are all connected with control system 1, uniformly there is each device of control
Working status.
As shown in Fig. 2, the present invention extruding cavity be divided into nine sections altogether, initiating terminal be divided into first segment extruding cavity 51,
Second section extruding cavity 52, Section of three extruding cavity 53, Section of four extruding cavity 54, Section of five extruding cavity 55, Section of six extruding cavity 56, the
Seven section extruding cavities 57, Section of eight extruding cavity 58, modular segment 59.The draw ratio of twin-screw is 46:1-48:1, it can specifically be set to 46：
1、47:1、48:1.Twin-screw includes the first transportation section 61, the first mixing section 71, the first kneading block 81, the second mixing section successively
72nd, the second kneading block 82, the second transportation section 62, the 3rd mixing section 73, the 3rd kneading block 83, the 4th kneading block the 84, the 4th are kneaded
The 74, the 5th kneading block 85 of section.First transportation section 61 is in first segment extruding cavity 51, and the first mixing section 71 is in the second section and extrudes
In chamber 52, the first kneading block 81 is in Section of three extruding cavity 53, and the second mixing section 72 is in Section of four extruding cavity 54, and second pinches
Close section 82 to be in Section five extruding cavity 55, the second transportation section 62 is in Section of six extruding cavity 56, the 3rd mixing section 73 and the
Three kneading blocks 83 are in Section seven extruding cavity 57, and the 4th kneading block 84, the 4th mixing section 74 and the 5th kneading block 85 are in the
In eight section extruding cavities 58.First transportation section 61 and the second transportation section 61 are specially the installation conveying screw thread in the drive shaft of twin-screw
Module, includes the conveying screw thread module and helical pitch 32mm, the conveying screw thread module of length 32mm of helical pitch 48mm, length 48mm.
It is to install to be kneaded in the drive shaft of twin-screw that first mixing section 71, the second mixing section 72, the 3rd mixing section the 73, the 4th, which are kneaded 74,
Rotor module, is specially helical pitch 22mm, the kneading rotor module of length 22mm.Five kneading blocks（81/82/83/84/85）Then lead to
Cross the installation in the drive shaft of twin-screw and mediate module, kneading parameter method for expressing use herein " stagger arrangement angle/kneading disk quantity/
Block length "；First kneading block is combined as 30 °/7/48,45 °/5/32,60 °/4/22,90 °/5/32；Second kneading block combines
For 45 °/5/32,45 °/5/32,60 °/4/22,60 °/4/22；3rd kneading block is combined as 45 °/5/32；4th kneading block combines
For 45 °/5/32；5th kneading block is combined as 45 °/5/32., will hair in this structure to avoid foaming agent and crosslinking agent from decomposing in advance
The processing aids such as infusion, crosslinking agent, dispersant, blowing promotor are placed in side drawing-in device 4, and can be pacified in side drawing-in device 4
Any section extruding cavity loaded on Section of three extruding cavity 53 to Section of six extruding cavity 56, is preferably installed on the by side drawing-in device 4
Six section extruding cavities 56.It is to be fixedly installed in driving by spline that screw thread module is conveyed in this structure, mediates module and kneading rotor
Axis, 59 extrusion neck ring mold of modular segment are designed as circular or ellipse as needed.
Experiment 1
Stock：By EVA200kg, regeneration LDPE800kg, EVA/PE foam recovery material 300kg, colorant black masterbatch 60kg,
Calcium carbonate 300kg is put into main drawing-in device 3, by Foam agent ADC 50kg, crosslink agent DCP 60kg, dispersant St20kg, foaming
Auxiliary agent zinc oxide 50kg puts into side drawing-in device 4.
Table 1 tests 1 dual-screw-stem machine technological parameter
| Motor speed | First segment | Second section | Section three, | Section four, | Section five, | Section six, | Section seven, | Section eight, | Die orifice |
| 200 turns/min | 140℃ | 140℃ | 130℃ | 125℃ | 120℃ | 115℃ | 100℃ | 95℃ | 0℃ |
The draw ratio of twin-screw is 46 in this experiment:1, and side drawing-in device 4 is installed on Section of six extruding cavity 56.Pass through control
The corresponding transmission device 2 of the process parameter control according to table 1 of system 1 processed, the working status of heating and cooling system, and according to double spiral shells
Bar extrusion yield in unit time sets the main timing of drawing-in device 3 and side drawing-in device 4, quantitative feeding.Add by testing 1 material
Work, then the EVA/PE foaming plate tensile strengths 0.81- produced successively through rolling out film and vulcanizing press vulcanization
0.86Mpa, elongation 171-175%, density 1.31-1.35kg/cm3, appearance foam structure is fine and closely woven uniformly, a batch color base
This consistent no color differnece.Same recipe, by conventionally produced product, the test result between often expecting has fluctuation, tensile strength
For 0.6-0.9 Mpa, elongation 162-179%, density 1.29-1.38kg/cm3, appearance foam structure has fine and closely woven, has
Slightly thick, fine and closely woven is of light color, and the slightly thick color of abscess is deep.
Experiment 2
Dispensing：Regenerate LDPE100kg, EVA/PE foam recovery material 30kg, colorant 2kg, calcium carbonate 30kg and put into main feeding
In device 3, Foam agent ADC 5kg, crosslink agent DCP 0.8kg, dispersant St1kg, blowing promotor zinc oxide 2kg are put into side feeding
Device 4.
Table 2 tests 2 dual-screw-stem machine technological parameters
| Motor speed | First segment | Second section | Section three, | Section four, | Section five, | Section six, | Section seven, | Section eight, | Die orifice |
| 200 turns/min | 150℃ | 150℃ | 150℃ | 140℃ | 130℃ | 125℃ | 120℃ | 120℃ | 0℃ |
The draw ratio of twin-screw is 48 in this experiment:1, and side drawing-in device 4 is installed on Section of five extruding cavity 55.Pass through control
The corresponding transmission device 2 of the process parameter control according to table 2 of system 1 processed, the working status of heating and cooling system, and according to double spiral shells
Bar extrusion yield in unit time sets the main timing of drawing-in device 3 and side drawing-in device 4, quantitative feeding.Through testing 2 materiel machinings,
The EVA/PE foaming plate tensile strength 1.7Mpa produced successively through rolling out film and vulcanizing press vulcanization again, elongation
152%, density 1.31kg/cm3, appearance foam structure are fine and closely woven uniformly.
It is above-described, be only presently preferred embodiments of the present invention, it is impossible to limit the scope implemented of the present invention, it is every according to
The equivalent change and decoration that scope of the present invention patent is made, should all still fall within the range of the present invention covers.
Claims (5)
1. for the double screw extruder of EVA/PE crosslinked foaming materiel machinings, mainly by transmission device, main drawing-in device, extrusion
Chamber, heating and cooling system and control system composition；Feed inlet is in one end of extruding cavity and is provided with main drawing-in device；Extruded
Intracavitary is provided with parallel equidirectional two-screw, it is characterised in that：The extruding cavity is divided into nine sections, is respectively first segment extruding cavity, the
Two squeeze save out chamber, Section three extruding cavity, the save four extruding cavities, Section of five extruding cavity, Section of six extruding cavity, Section of seven extruding cavity,
Section eight, extruding cavity and die orifice section；The position that the twin-screw corresponds to first segment extruding cavity is the first transportation section；The twin-screw
The position of corresponding second section extruding cavity is the first mixing section；Mediated for first at the position that the twin-screw corresponds to Section of three extruding cavity
Section；The position that the twin-screw corresponds to Section of four extruding cavity is the second mixing section；Section of five extruding cavity of the twin-screw correspondence
Position is the second kneading block；The position that the twin-screw corresponds to Section of six extruding cavity is the second transportation section；The twin-screw corresponds to
Section seven, the position of extruding cavity is followed successively by the 3rd mixing section and the 3rd kneading block；The twin-screw corresponds to the portion of Section of eight extruding cavity
Position is followed successively by the 4th kneading block, the 4th mixing section and the 5th kneading block；First kneading block, the second kneading block, the 3rd mediate
Section, the 4th kneading block are all by several kneading module compositions, mediate the parameter of module with stagger arrangement angle/kneading disk quantity/module
The mode of length represents that the kneading module of first kneading block is 30 °/7/48,45 °/5/32,60 °/4/22,90 °/5/32；
The kneading module of second kneading block is 45 °/5/32,45 °/5/32,60 °/4/22,60 °/4/22；3rd kneading block
Kneading module be 45 °/5/32, the kneading module of the 4th kneading block is 45 °/5/32, and the kneading module of the 5th kneading block is
45°/5/32。
2. it is used for the double screw extruder of EVA/PE crosslinked foaming materiel machinings according to claim 1, it is characterised in that：Institute
The draw ratio for stating twin-screw is 46:1-48:1.
3. it is used for the double screw extruder of EVA/PE crosslinked foaming materiel machinings according to claim 1, it is characterised in that：Position
Side drawing-in device is equipped with Section of three extruding cavity to the position of Section of six extruding cavity.
4. it is used for the double screw extruder of EVA/PE crosslinked foaming materiel machinings according to claim 3, it is characterised in that：Institute
State side drawing-in device and be installed on Section of six extruding cavity.
5. it is used for the double screw extruder of EVA/PE crosslinked foaming materiel machinings according to claim 3, it is characterised in that：The master
Drawing-in device and side drawing-in device all claim to be weightless.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510572674.3A CN105128311B (en) | 2015-09-10 | 2015-09-10 | Double screw extruder for EVA/PE crosslinked foaming materiel machinings |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510572674.3A CN105128311B (en) | 2015-09-10 | 2015-09-10 | Double screw extruder for EVA/PE crosslinked foaming materiel machinings |
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| Publication Number | Publication Date |
|---|---|
| CN105128311A CN105128311A (en) | 2015-12-09 |
| CN105128311B true CN105128311B (en) | 2018-04-24 |
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Families Citing this family (2)
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|---|---|---|---|---|
| CN106553325B (en) * | 2016-12-08 | 2018-12-11 | 北京工商大学 | A kind of double screw extruder that shearing mixing area's kneading block can change automatically |
| CN107199653A (en) * | 2017-07-12 | 2017-09-26 | 杨强 | A kind of process for subsequent treatment of EVA foaming products, equipment and its sheet material made |
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