CN104354286A - Drying and cooling device of plastic granulator - Google Patents
Drying and cooling device of plastic granulator Download PDFInfo
- Publication number
- CN104354286A CN104354286A CN201410620913.3A CN201410620913A CN104354286A CN 104354286 A CN104354286 A CN 104354286A CN 201410620913 A CN201410620913 A CN 201410620913A CN 104354286 A CN104354286 A CN 104354286A
- Authority
- CN
- China
- Prior art keywords
- bosh
- carry
- pinch rolls
- over pinch
- drying
- 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
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
- B29C48/03—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor characterised by the shape of the extruded material at extrusion
- B29C48/04—Particle-shaped
-
- 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
-
- 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
-
- 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
- B29C48/355—Conveyors for extruded articles
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F26—DRYING
- F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
- F26B21/00—Arrangements or duct systems, e.g. in combination with pallet boxes, for supplying and controlling air or gases for drying solid materials or objects
- F26B21/004—Nozzle assemblies; Air knives; Air distributors; Blow boxes
-
- 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
- B29C48/88—Thermal treatment of the stream of extruded material, e.g. cooling
- B29C48/919—Thermal treatment of the stream of extruded material, e.g. cooling using a bath, e.g. extruding into an open bath to coagulate or cool the material
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- General Engineering & Computer Science (AREA)
- Drying Of Solid Materials (AREA)
Abstract
The invention discloses a drying and cooling device of a plastic granulator. The drying and cooling device comprises an air-cooled drying device and a water cooling device, wherein the water cooling device comprises a cooling water tank, downward traction rollers are arranged in the front part of the cooling water tank, upward traction rollers are arranged above a tank opening of the rear part of the cooling water tank, the downward and upward traction rollers are mounted on the cooling water tank through traction roller frames, the air-cooled drying device comprises a lower tank body, an air distribution box, an air blower and a vertical ventilating pipe, the vertical ventilating pipe is connected with the air blower, the left sidewall of the lower tank body is fixed at the upper part of the vertical ventilating pipe, gaps are respectively formed in the front and rear sidewalls of the lower tank body, a water receiving groove plate is connected between the gap of the front side and the cooling water tank, a traction roller is mounted in the lower tank body, the air distribution box comprises a crescent-shaped box body, the two ends of the box body are located just above the traction roller, air outlets are respectively formed in the two ends of the box body, and an air inlet is formed in the middle part of the left sidewall of the box body and is connected with the bent portion of the upper end of the vertical ventilating pipe. The drying and cooling device is good in drying and cooling effect, low in energy consumption, simple in equipment structure and flexible and changeable in use.
Description
Technical field
The present invention relates to a kind of cooling and drying device of plastic granulator bar.
Background technology
Comminutor is a kind of forming machine that material can be manufactured given shape, is widely used in the fields such as chemical industry, petrochemical industry, pharmacy, food, building materials, mining and metallurgy, environmental protection, printing and dyeing, pottery, rubber, plastics.
When carrying out granulation to the material of the plastic materials such as PVC, be generally adopt mould to extrude strip the material of melting, then cold trap of intaking carry out water-cooled, makes it harden to facilitate pelletizing after water-cooled.Meeting adhesion moisture in strip-shaped materials after water cooling unavoidable surface is nowadays all adopt air blast directly to blow material make the moisture drying on material surface and cool further.Or by a pipeline, wind is guided to above bar, then aim at bar to blow, the fixed point on such direction is blown and is often caused the moisture on bar well not blow away, and drying effect is poor, just may need multiple air blast synergy, energy consumption is high.
In addition, at present, bar is all adopt carry-over pinch rolls traction bar when water-cooled, at present, mostly adopts four carry-over pinch rolls to draw, the first two carry-over pinch rolls are fixedly mounted on the bottom of the madial wall of tank, latter two is arranged on the upper end of the madial wall of tank, is equivalent to the first submergence of material like this and cools with water in the sink, and then get up gradually, leave the water surface, carry out drying.Such carry-over pinch rolls adopt fixed form, and inconvenient adjusting position, uses inconvenience.
Summary of the invention
For existing problem, the object of the present invention is to provide a kind of cooling, drying effect is good, plastic granulator device for drying and cooling that energy consumption is low.
To achieve these goals, technical scheme of the present invention is: a kind of plastic granulator device for drying and cooling, comprise wind cold drying device and water cooling plant, described water cooling plant comprises bosh, the front end of described bosh is provided with water inlet, and rear end is provided with delivery port, it is characterized in that: be provided with lower carry-over pinch rolls in the front portion of described bosh, the notch at the rear portion of described bosh is provided with carry-over pinch rolls, and described lower carry-over pinch rolls and upper carry-over pinch rolls are all contained on bosh by traction roll stand;
Described traction roll stand comprises left socle, right support, connecting plate and vertically installs support plate, described left socle and the right support cross frame all for being made up of longitudinal plate and transverse plate, connected by connecting plate between described left socle and right support, the upper end of longitudinal plate of described left socle and right support is provided with vertically installs support plate, and the two ends of the jackshaft of described lower carry-over pinch rolls or upper carry-over pinch rolls are separately fixed at the top of the vertical installation support plate of left socle and right support; In the front portion of bosh, described traction roll stand upside down and is placed on the notch of bosh, the lower carry-over pinch rolls drawn in roll stand are made to be positioned at bosh, at the rear portion of bosh, described traction roll stand is placed on the notch of bosh, makes the upper carry-over pinch rolls drawn in roll stand be positioned at above bosh;
Described wind cold drying device comprises lower groove, cloth bellows, air blast and vertical ventilation duct, and the lower end of described vertical ventilation duct is connected with the air outlet of air blast by ring flange, the upper end bending of described vertical ventilation duct;
Described lower groove is positioned at the rear of bosh, the left side wall of described lower groove is fixed on the top of vertical ventilation duct, the height of described lower groove is higher than bosh, the top of the forward and backward sidewall of described lower groove all has breach, water receiving frid is connected with between the breach of the front side of described lower groove and the rear end of bosh, breach in described lower groove on front-rear side walls is provided with carry-over pinch rolls, and the two ends of the central shaft of described carry-over pinch rolls are arranged on the left and right sidewall of lower groove;
Described cloth bellows are positioned at the top of lower groove, described cloth bellows comprise crescent casing, the rear and front end of described crescent casing is just in time positioned at directly over two carry-over pinch rolls, the rear and front end of described crescent casing is respectively equipped with air outlet, the middle part of the left side wall of described crescent casing is provided with air inlet, and described air inlet is connected with the upper end kink of vertical ventilation duct.
Adopt such scheme, extrusion die is terminated to before bosh, the bar extruded out, under the effect of lower carry-over pinch rolls, enter in tank and carry out water-cooled, when arriving the rear portion of water-cooling groove, bar from water-cooling groove out, in the distraction procedure of upper carry-over pinch rolls, most of water drops onto tank under gravity.Be drawn to first carry-over pinch rolls on front side of lower groove from water-cooling groove bar out, now, still have part water droplet to drip, the water droplet of drippage is dropped on water receiving frid, returns bosh.The air outlet of the cloth bellows of wind above the front side carry-over pinch rolls of lower groove out, first time cooling and drying are carried out to bar, bar moves on, in the meantime, under the effect of first time wind, the a part of water do not taken away is fallen in lower groove under gravity, the base plate of lower groove is assembled, when arriving the carry-over pinch rolls of rear side, dry and cooling is further carried out under the effect of the air outlet of the cloth bellows again above these carry-over pinch rolls, bar drying effect is good, and only needs an air blast, and energy consumption is low.
In addition, we adopt half moon-shaped cloth bellows, air inlet is positioned at the middle part of rear wall, air inlet is connected with air blast by vertical duct, after air intake, tank-volumes becomes more and more narrower to air outlet place, is the equal of pressurize to air intake like this, blow to again after pressurization on the bar on carry-over pinch rolls, make cool drying effect become better.Namely our air-out is blown down directly over bar by direct after extruding pressurization, better effects if.
By traction roll stand, carry-over pinch rolls are installed in the sink.When needing carry-over pinch rolls to be positioned at tank, just traction roll stand be upside down placement, when needing to be positioned at above tank, just will draw roll stand along placement, flexible and changeable, can also increase and reduce the number of carry-over pinch rolls in tank at any time.
As preferably, the front portion of described bosh is provided with two lower carry-over pinch rolls, and the rear portion of described bosh is provided with two upper carry-over pinch rolls.Such traction effect is better.
In such scheme: the notch of described bosh is provided with flanging.More convenient like this placement traction roll stand.
In such scheme: connect connecting plate between the two ends of the transverse plate of described left socle and right support.
In such scheme: connect " n " shape connecting plate between the middle part of the transverse plate of described left socle and right support, the upper end of two vertical plate of described " n " shape connecting plate is welded on the middle part of the transverse plate of left socle and right support.This n shape frame not only plays the effect connecting left socle and right support, when drawing roll stand and upside down placement, can also as a handle, and easy to use.
In such scheme: the base plate of described lower groove is the curved plate to lower recess.Be conducive to collecting on base plate of dripping like this.
At such scheme: the two ends of the left side plate of described lower groove are provided with vertical waist-shaped hole respectively relatively, and the two ends of the central shaft of described carry-over pinch rolls are provided with screw rod, and the two ends of the central shaft of described carry-over pinch rolls are fixed in waist-shaped hole respectively by nut.Be convenient to the position regulating carry-over pinch rolls like this.
The invention has the beneficial effects as follows: bar is just mentioned at the rear portion of bosh by the present invention, pass through Air flow, bar arrives wind cold drying device again, carry out air-cooled and dry, when air-cooled, again by crescent cloth bellows cloth wind, air blast wind out by two, left and right outlet pressurization after out, wind out directly blows on bar, and cool drying is effective, and energy consumption is low.Employing traction roll stand of the present invention installs carry-over pinch rolls and lower carry-over pinch rolls, the shelf of a same structure, can meet and be immersed in water by bar, can meet again the requirement making bar on the water surface, meet multiduty needs, structure is simple, flexible and convenient to use, when roller goes wrong, can change in time, do not affect production efficiency, can also increase in the sink according to need of production at any time and reduce the number of carry-over pinch rolls, flexible and changeable.
Accompanying drawing illustrates:
Fig. 1 is structural representation of the present invention;
Fig. 2 is the structural representation of carry-over pinch rolls installing rack.
Detailed description of the invention
Below in conjunction with the drawings and specific embodiments, the present invention will be further described:
Embodiment 1
Relative position all around only in representative graph of the present invention, does not represent the absolute position of product, and in the drawings, our agreement, the front end of bosh 1 is front, and tail end is rear.
As shown in Figure 1: plastic granulator device for drying and cooling of the present invention is made up of wind cold drying device and water cooling plant.
Water cooling plant comprises bosh 1, and the front end of bosh 1 is provided with water inlet, and rear end is provided with delivery port, and this is prior art, and do not repeat at this, also do not have imbody to go out water inlet and delivery port in figure, the notch of bosh 1 is provided with flanging 1a.Be provided with lower carry-over pinch rolls 2 in the front portion of bosh 1, the notch at the rear portion of bosh 1 is provided with carry-over pinch rolls 4, and lower carry-over pinch rolls 2 and upper carry-over pinch rolls 4 are all contained on bosh 1 by traction roll stand 3.
Traction roll stand 3 comprises left socle 31, right support 32, connecting plate 33 and vertical installation support plate 34, left socle 31 and the right support 32 cross frame all for being made up of longitudinal plate and transverse plate, connecting respectively by connecting plate 33 between the transverse plate two ends of left socle 31 and right support 32, connect " n " shape connecting plate 35 between the middle part of the transverse plate of left socle 31 and right support 32, the upper end of two vertical plate of " n " shape connecting plate 35 is welded on the middle part of the transverse plate of left socle 31 and right support 32.
The upper end of longitudinal plate of left socle 33 and right support 32 is provided with vertical installation support plate 34, and the two ends of the jackshaft of lower carry-over pinch rolls 2 or upper carry-over pinch rolls 4 are separately fixed at the top of the vertical installation support plate 34 of left socle 31 and right support 32; In the front portion of bosh 1, traction roll stand 3 upside down on the flanging 1a of the notch being placed on bosh 1, the lower carry-over pinch rolls 2 drawn in roll stand 3 are made to be positioned at bosh 1, at the rear portion of bosh 1, traction roll stand 3 is placed on the flanging of the notch of bosh 1, makes the upper carry-over pinch rolls 4 drawn in roll stand 3 be positioned at above bosh 1; Preferably arrange two lower carry-over pinch rolls 2 in the front portion of bosh 1, the rear portion of bosh 1 arranges two upper carry-over pinch rolls 4.
Wind cold drying device comprises lower groove 5, cloth bellows 6, air blast 10 and vertical ventilation duct 11.
The lower end of vertical ventilation duct 11 is connected by the air outlet of ring flange with air blast 10, the upper end bending of vertical ventilation duct 11.
Lower groove 5 is made up of front and back side plate, left side plate and base plate, and base plate is the arc to lower recess.The centre on the top of the front-rear side walls of lower groove 5 has rectangle breach 7, lower groove 5 is positioned at the rear of bosh 1, the left side wall of lower groove 5 is fixed on the top of vertical ventilation duct 11, the height of lower groove 5, higher than bosh 1, is connected with water receiving frid 9 between the breach 7 of the front side of institute's lower groove 5 and the rear end of bosh 1.
Breach 7 in lower groove 5 on front-rear side walls is provided with carry-over pinch rolls 8, the top at the two ends of the left side plate of lower groove 1 is provided with vertical waist-shaped hole 51 respectively relatively, the two ends of the central shaft of carry-over pinch rolls 8 are provided with screw rod, and the two ends of the central shaft of carry-over pinch rolls 8 are fixed in waist-shaped hole 51 respectively by nut.Be convenient to the upper-lower position regulating carry-over pinch rolls 8 like this.
Cloth bellows 6 are positioned at the top of lower groove 5, cloth bellows 6 comprise crescent casing, namely the central space of casing is large, rear and front end is bent downwardly, and the space of rear and front end diminishes, the rear and front end of crescent casing is just in time positioned at directly over two carry-over pinch rolls 8, and the rear and front end of crescent casing is provided with air outlet 62, and the middle part of the left side wall of crescent casing is provided with air inlet 61.Air inlet 61 is connected with the upper end kink of vertical ventilation duct 11.
More than describe preferred embodiment of the present invention in detail.Should be appreciated that those of ordinary skill in the art just design according to the present invention can make many modifications and variations without the need to creative work.Therefore, all technical staff in the art, all should by the determined protection domain of claims under this invention's idea on the basis of existing technology by the available technical scheme of logical analysis, reasoning, or a limited experiment.
Claims (7)
1. a plastic granulator device for drying and cooling, comprise wind cold drying device and water cooling plant, described water cooling plant comprises bosh (1), the front end of described bosh (1) is provided with water inlet, rear end is provided with delivery port, it is characterized in that: in the front portion of described bosh (1), be provided with lower carry-over pinch rolls (2), the notch at the rear portion of described bosh (1) is provided with carry-over pinch rolls (4), and described lower carry-over pinch rolls (2) and upper carry-over pinch rolls (4) are all contained on bosh (1) by traction roll stand (3);
Described traction roll stand (3) comprises left socle (31), right support (32), connecting plate (33) and vertically install support plate (34), described left socle (31) and the cross frame of right support (32) all for being made up of longitudinal plate and transverse plate, connected by connecting plate (33) between described left socle (31) and right support (32), the upper end of longitudinal plate of described left socle (33) and right support (32) is provided with vertically installs support plate (34), the two ends of the jackshaft of described lower carry-over pinch rolls (2) or upper carry-over pinch rolls (4) are separately fixed at the top of the vertical installation support plate (34) of left socle (31) and right support (32), in the front portion of bosh (1), described traction roll stand (3) upside down be placed on bosh (1) notch on, the lower carry-over pinch rolls (2) drawn in roll stand (3) are made to be positioned at bosh (1), at the rear portion of bosh (1), described traction roll stand (3) is placed on the notch of bosh (1), makes the upper carry-over pinch rolls (4) drawn in roll stand (3) be positioned at bosh (1) top,
Described wind cold drying device comprises lower groove (5), cloth bellows (6), air blast (10) and vertical ventilation duct (11), the lower end of described vertical ventilation duct (11) is connected by the air outlet of ring flange with air blast (10), the upper end bending of described vertical ventilation duct (11);
Described lower groove (5) is positioned at the rear of bosh (1), the left side wall of described lower groove (5) is fixed on the top of vertical ventilation duct (11), the height of described lower groove (5) is higher than bosh (1), before described lower groove (5), the top of rear wall all has breach (7), water receiving frid (9) is connected with between the breach (7) of the front side of described lower groove (5) and the rear end of bosh (1), breach (7) in described lower groove (5) on front-rear side walls is provided with carry-over pinch rolls (8), the two ends of the central shaft of described carry-over pinch rolls (8) are arranged on the left and right sidewall of lower groove (5),
Described cloth bellows (6) are positioned at the top of lower groove (5), described cloth bellows (6) comprise crescent casing, the rear and front end of described crescent casing is just in time positioned at directly over two carry-over pinch rolls (8), the rear and front end of described crescent casing is respectively equipped with air outlet (62), the middle part of the left side wall of described crescent casing is provided with air inlet (61), and described air inlet (61) is connected with the upper end kink of vertical ventilation duct (11).
2. a kind of plastic granulator device for drying and cooling according to claim 1; the front portion of described bosh (1) is provided with two lower carry-over pinch rolls (2), and the rear portion of described bosh (1) is provided with two upper carry-over pinch rolls (4).
3. a kind of plastic granulator device for drying and cooling according to claim 1, is characterized in that: the notch of described bosh (1) is provided with flanging (1a).
4. a kind of plastic granulator device for drying and cooling according to claim 1, is characterized in that: connect connecting plate (33) between the two ends of the transverse plate of described left socle (31) and right support (32).
5. a kind of plastic granulator device for drying and cooling according to claim 4; it is characterized in that: connect " n " shape connecting plate (35) between the middle part of the transverse plate of described left socle (31) and right support (32), the upper end of two vertical plate of described " n " shape connecting plate (35) is welded on the middle part of the transverse plate of left socle (3) and right support (4).
6. a kind of plastic granulator device for drying and cooling according to claim 1, is characterized in that: the base plate of described lower groove (5) is the curved plate to lower recess.
7. a kind of plastic granulator device for drying and cooling according to claim 1 or 2; it is characterized in that: the two ends of the left side plate of described lower groove (5) are provided with vertical waist-shaped hole (51) respectively relatively; the two ends of the central shaft of described carry-over pinch rolls (8) are provided with screw rod, and the two ends of the central shaft of described carry-over pinch rolls (8) are fixed in waist-shaped hole (51) respectively by nut.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410620913.3A CN104354286A (en) | 2014-11-05 | 2014-11-05 | Drying and cooling device of plastic granulator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410620913.3A CN104354286A (en) | 2014-11-05 | 2014-11-05 | Drying and cooling device of plastic granulator |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104354286A true CN104354286A (en) | 2015-02-18 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410620913.3A Pending CN104354286A (en) | 2014-11-05 | 2014-11-05 | Drying and cooling device of plastic granulator |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104354286A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106696117A (en) * | 2017-01-05 | 2017-05-24 | 江苏弘盛新材料股份有限公司 | Nylon-6 low-cost granulating technology and double-screw granulating machine |
| CN107471604A (en) * | 2017-10-11 | 2017-12-15 | 北京工商大学 | A kind of screw extruder observing and controlling cooling device |
| CN113787657A (en) * | 2021-11-01 | 2021-12-14 | 雄县鑫盛达塑料包装有限公司 | Reed-based biodegradable new material type co-extrusion unit for thin film |
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| CN204278491U (en) * | 2014-11-05 | 2015-04-22 | 重庆鸿岱科技有限公司 | Plastic granulator device for drying and cooling |
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| CN102837410A (en) * | 2012-08-30 | 2012-12-26 | 苏州博云塑业有限公司 | Cooling drying device for plastic extruded material |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN106696117A (en) * | 2017-01-05 | 2017-05-24 | 江苏弘盛新材料股份有限公司 | Nylon-6 low-cost granulating technology and double-screw granulating machine |
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| CN107471604A (en) * | 2017-10-11 | 2017-12-15 | 北京工商大学 | A kind of screw extruder observing and controlling cooling device |
| CN107471604B (en) * | 2017-10-11 | 2019-06-04 | 北京工商大学 | A kind of cooling equipment of screw extruder observing and controlling |
| CN113787657A (en) * | 2021-11-01 | 2021-12-14 | 雄县鑫盛达塑料包装有限公司 | Reed-based biodegradable new material type co-extrusion unit for thin film |
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Application publication date: 20150218 |
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