CN112760734B - Fiber-grade polypropylene production system and use method - Google Patents
Fiber-grade polypropylene production system and use method Download PDFInfo
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- CN112760734B CN112760734B CN202110070131.7A CN202110070131A CN112760734B CN 112760734 B CN112760734 B CN 112760734B CN 202110070131 A CN202110070131 A CN 202110070131A CN 112760734 B CN112760734 B CN 112760734B
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- cooling
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- extruder
- fiber
- pipeline
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- D—TEXTILES; PAPER
- D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
- D01D—MECHANICAL METHODS OR APPARATUS IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS
- D01D13/00—Complete machines for producing artificial threads
-
- D—TEXTILES; PAPER
- D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
- D01D—MECHANICAL METHODS OR APPARATUS IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS
- D01D5/00—Formation of filaments, threads, or the like
- D01D5/08—Melt spinning methods
- D01D5/088—Cooling filaments, threads or the like, leaving the spinnerettes
- D01D5/092—Cooling filaments, threads or the like, leaving the spinnerettes in shafts or chimneys
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- D—TEXTILES; PAPER
- D10—INDEXING SCHEME ASSOCIATED WITH SUBLASSES OF SECTION D, RELATING TO TEXTILES
- D10B—INDEXING SCHEME ASSOCIATED WITH SUBLASSES OF SECTION D, RELATING TO TEXTILES
- D10B2321/00—Fibres made from polymers obtained by reactions only involving carbon-to-carbon unsaturated bonds
- D10B2321/02—Fibres made from polymers obtained by reactions only involving carbon-to-carbon unsaturated bonds polyolefins
- D10B2321/022—Fibres made from polymers obtained by reactions only involving carbon-to-carbon unsaturated bonds polyolefins polypropylene
Abstract
The invention discloses a fiber-grade polypropylene production system and a use method thereof, and the fiber-grade polypropylene production system comprises a rack, a motor, a transmission case, a driving case, a hopper, an extruder and an extrusion structure, wherein the motor is arranged at the lower end of the inner side of the rack, the driving case is horizontally arranged at the upper end of the rack, the motor is connected with the driving case through the transmission case, the extruder is horizontally arranged at the right side of the driving case, the hopper is vertically arranged at the upper end of the extruder, the extrusion structure is arranged at the right side of the extruder, the extrusion structure comprises a connecting disc, a discharge hole and a cooling structure, and the connecting disc is connected with the right side of the extruder; set up the cooling hole on the cooling tube, better cool off the cellosilk to prevented when not cooling down completely with the organism contact, and then prevented to bond with the organism, better carries out the roll-up to the cellosilk.
Description
The invention is a divisional application of a production device of fiber grade polypropylene, which has the application date of 2020, 1 month and 1 day and the application number of CN 202010026898.5.
Technical Field
The invention belongs to the field of polypropylene production, and particularly relates to a fiber-grade polypropylene production system and a use method thereof.
Background
The fiber-grade polypropylene is mainly a synthetic fiber which is polymerized and spun by using propylene as a raw material, in the process, the polypropylene needs to be melted, and then the polypropylene is extruded by a screw extruder to form a plurality of fiber threads, and the fiber threads are respectively pulled out to be wound and collected, but the prior art has the following defects:
because the fiber-grade polypropylene is melted at high temperature and extruded, the extruded silk threads at different positions are required to be cooled and formed by air during extrusion, and the extruded silk threads at different positions are pulled during winding, so that the silk threads are cooled to different degrees and different positions, and part of the silk threads fall down during pulling and are contacted with the silk threads or a machine body at other positions, thereby bonding the fiber-grade polypropylene which is not cooled completely and influencing the winding of the silk threads.
The application provides a fiber-grade polypropylene production system and a using method thereof, which improve the defects.
Disclosure of Invention
Aiming at the defects in the prior art, the invention aims to provide a fiber-grade polypropylene production system and a using method thereof, so as to solve the problem that in the prior art, as the fiber-grade polypropylene is melted at high temperature and extruded, air cooling molding is required during extrusion, extruded silk threads at different parts are pulled during winding, the cooling degree and the cooling position of the silk threads are different, and part of the silk threads drop down during pulling and are contacted with silk threads or machine bodies at other parts, so that the incompletely cooled fiber-grade polypropylene is bonded, and the winding of the silk threads is influenced.
In order to achieve the purpose, the invention is realized by the following technical scheme: a fiber-grade polypropylene production system and a using method thereof comprise a rack, a motor, a transmission case, a driving case, a hopper, an extruder and an extrusion structure, wherein the motor is arranged at the lower end of the inner side of the rack and is mechanically connected, the driving case is horizontally arranged at the upper end of the rack and is welded with the upper end of the rack, the motor is connected with the driving case through the transmission case, the extruder is horizontally arranged at the right side of the driving case, the inner side of the extruder is mechanically connected, the hopper is vertically arranged at the upper end of the extruder and is fixed by bolts, and the extrusion structure is arranged at the right side of the extruder, and the inner sides of the extrusion structure are communicated; the extruding structure comprises a connecting disc, a discharging hole and a cooling structure, the connecting disc is connected to the right side of the extruder and located on the same central line, the discharging hole penetrates through the inner side of the connecting disc and is distributed in an annular mode, and the cooling structure is installed on the outer side of the connecting disc and communicated with the discharging hole.
The invention is further improved, the cooling structure comprises a pipeline, a fixing frame, a cooling pipe and an air inlet pipe, the pipeline is arranged on the inner side of the fixing frame and is positioned on the same axis, the cooling pipe is arranged on the inner side of the fixing frame and is welded with the fixing frame, the cooling pipe is communicated with the pipeline, the lower end of the outer surface of the air inlet pipe is provided with the pipeline, the inner side of the air inlet pipe is communicated with the pipeline, and the cooling pipe is embedded into the inner side of the discharge hole.
The invention is further improved, a plurality of cooling pipes are arranged and distributed on the inner side of the fixing frame in an annular mode, and the cooling pipes correspond to the discharge holes one by one.
The invention is further improved, the outer surface of the cooling pipe is provided with a communicating pipe, and the communicating pipe is provided with a plurality of communicating pipes which are respectively communicated with the pipeline and the cooling pipe.
In a further improvement of the present invention, the cooling pipe includes an outer pipe, a ventilation groove, a cooling groove, an inner pipe, and a connection port, the inner pipe is disposed inside the outer pipe, the ventilation groove is disposed between the outer pipe and the inner pipe, the cooling groove penetrates the inner pipe and is integrated, and the connection port penetrates the outer pipe and is communicated with the ventilation groove.
In a further improvement of the invention, the outer pipe is a transversely extending pipe body, and the connecting ports are provided in a plurality and are equidistantly distributed at the upper end of the outer pipe.
The invention is further improved, the upper end of the inner pipe is provided with a cooling port, and the cooling port is communicated with the ventilation groove.
In a further improvement of the invention, the cooling ports are provided in plurality, and each cooling port 8 forms a ring shape, and the air outlet directions of the cooling ports on the same ring shape converge at a point.
According to the technical scheme, the fiber-grade polypropylene production system and the using method have the following beneficial effects:
according to the invention, the cooling structure is arranged outside the discharge port, the fiber yarns are sent out from the discharge port and to the inner side of the cooling structure, cold air is sent into the pipeline by the air inlet pipe and is sent into the communicating pipe communicated with the pipeline, then the cold air is respectively sent into different cooling pipes, the fiber yarns positioned inside the cooling pipes are cooled at intervals, the fiber yarns are spaced during cooling, the fiber yarns which are not completely cooled are prevented from being contacted and bonded and wound, and the winding of the fiber yarns is smoother.
According to the invention, the upper end of the cooling pipe is provided with the cooling port, after the fiber yarn enters the cooling pipe, cold air enters the inner side of the outer pipe from different connecting ports respectively, the ventilation groove is utilized to convey the cold air to different positions, the cooling port is positioned on the outer surface of the inner pipe, the cooling port communicated with the ventilation groove can send the cold air out and uniformly blow the cold air on the outer surface of the fiber yarn, and the fiber yarn is blown by the cold air at different positions, is positioned at the central position of the cooling groove and further kept inside to prevent the fiber yarn from contacting with the inner side of the inner pipe, so that the fiber yarn is better cooled, and is prevented from contacting with a machine body when not completely cooled, so that the fiber yarn is prevented from being bonded with the machine body, and the fiber yarn is better coiled.
Drawings
Other features, objects and advantages of the invention will become more apparent upon reading of the detailed description of non-limiting embodiments with reference to the following drawings:
FIG. 1 is a schematic structural diagram of a fiber-grade polypropylene production system and a method of use according to the present invention;
FIG. 2 is a schematic diagram of the extruded structure of the present invention;
FIG. 3 is a schematic cross-sectional view of an extruded structure according to the present invention;
FIG. 4 is a schematic structural view of a cooling structure according to the present invention;
FIG. 5 is a schematic cross-sectional view of a cooling structure according to the present invention;
FIG. 6 is a schematic view of the structure of the cooling tube of the present invention;
FIG. 7 is a schematic cross-sectional view of a cooling tube according to the present invention.
In the figure: the device comprises a rack-1, a motor-2, a transmission case-3, a driving case-4, a hopper-5, an extruder-6, an extrusion structure-7, a connecting disc-71, a discharge port-72, a cooling structure-73, a pipeline-731, a fixing frame-732, a cooling pipe-733, an air inlet pipe-734, a communicating pipe-33 z, an outer pipe-33 a, a ventilating slot-33 b, a cooling slot-33 c, an inner pipe-33 d, a connecting port-33 e and a cooling port-d 1.
Detailed Description
In order to make the technical means, the creation characteristics, the achievement purposes and the effects of the invention easy to understand, the invention is further described with the specific embodiments.
The first embodiment is as follows: referring to fig. 1-7, the embodiments of the present invention are as follows:
the structure of the extruder comprises a rack 1, a motor 2, a transmission case 3, a driving case 4, a hopper 5, an extruder 6 and an extrusion structure 7, wherein the motor 2 is installed at the lower end of the inner side of the rack 1 and is in mechanical connection, the driving case 4 is horizontally installed at the upper end of the rack 1 and is welded with the driving case, the motor 2 is connected with the driving case 4 through the transmission case 3, the extruder 6 is horizontally installed at the right side of the driving case 4 and is in mechanical connection with the inner side, the hopper 5 is vertically installed at the upper end of the extruder 6 and is fixed by bolts, and the extrusion structure 7 is installed at the right side of the extruder 6 and is communicated with the inner side; the extrusion structure 7 comprises a connecting disc 71, discharge holes 72 and a cooling structure 73, wherein the connecting disc 71 is connected to the right side of the extruder 6 and is positioned on the same central line, the discharge holes 72 penetrate through the inner side of the connecting disc 71 and are distributed in an annular mode, and the cooling structure 73 is installed on the outer side of the connecting disc 71 and is communicated with the discharge holes 72.
Referring to fig. 2-3, the cooling structure 73 includes a duct 731, a fixed frame 732, a cooling pipe 733, and an air inlet pipe 734, the duct 731 is disposed inside the fixed frame 732 and located on the same axis, the cooling pipe 733 is mounted inside the fixed frame 732 and welded to the fixed frame 732, the cooling pipe 733 is in communication with the duct 731, the duct 731 is mounted at the lower end of the outer surface of the air inlet pipe 734 and in communication with the inside of the outer surface of the air inlet pipe, and the cooling pipe 733 is embedded inside the outlet 72 to cool different filaments and prevent contact therebetween.
Referring to fig. 2 to 3, the cooling pipes 733 are provided in plurality and are annularly distributed on the inner side of the fixed frame 732, and the cooling pipes 733 correspond to the discharge ports 72 one by one, so that the cooling pipes 733 can enter the cooling pipes 733 for cooling when the fiber filaments are extruded.
Referring to fig. 4-5, a communication pipe 33z is disposed on an outer surface of the cooling pipe 733, and the communication pipe 33z is disposed in plural and communicates with the duct 731 and the cooling pipe 733, respectively, so that the cooling pipe 733 can receive wind from plural positions, thereby cooling the fiber more uniformly.
Based on the above embodiment, the specific working principle is as follows:
the raw materials are fed into the inner side of the extruder 6 by the hopper 5, at the moment, the motor 2 starts to work and drives the transmission box 3, the extruder 6 connected with the driving box 4 starts to work, the raw materials are melted and extruded to the extrusion structure 7, the fiber yarns are fed out from the discharge port 72 and enter the inner side of the cooling structure 73, cold air is fed into the pipeline 731 by the air inlet pipe 734 and is fed into the communicating pipe 33z communicated with the cold air, then the cold air is respectively fed into different cooling pipes 733, the fiber yarns on the inner side of the cooling pipes 733 are cooled at intervals, the fiber yarns are extruded along with the continuous work of the extruder 6, the fiber yarns are fed out of the cooling pipes 733 and are wound up, and the circulation work is carried out.
Example two: referring to fig. 6-7, the embodiment of the present invention is as follows:
the cooling pipe 733 includes an outer pipe 33a having an inner pipe 33d formed therein and a ventilation groove 33b formed therebetween, a ventilation groove 33b formed inside the outer pipe 33a, a cooling groove 33c penetrating inside the inner pipe 33d and integrally formed therewith, and a connection port 33e penetrating inside the outer pipe 33a and communicating with the ventilation groove 33 b.
Referring to fig. 7, the outer tube 33a is a tube extending in a transverse direction, and the connection ports 33e are disposed in a plurality and equidistantly distributed at the upper end of the outer tube 33a to uniformly receive wind, so that cooling is more uniform.
Referring to fig. 6-7, the inner tube 33d is provided at an upper end thereof with a cooling port d1, and the cooling port d1 is communicated with the ventilation slot 33b so as to blow air to cool the filaments.
Referring to fig. 6-7, a plurality of cooling ports d1 are provided, and each cooling port d1 forms a ring, and the air outlet direction of the cooling ports d 3578 on the same ring converges at a point, so that the fiber filaments are blown by wind and concentrated at the center of the cooling groove 33c while being cooled.
Based on the above embodiment, the specific working principle is as follows:
after the fiber yarn enters the cooling tube 733, the cold air enters the outer tube 33a from different connecting ports 33e respectively, and is conveyed to different positions by the ventilation groove 33b to be positioned on the outer surface of the inner tube 33d, at the moment, the cooling port d1 communicated with the ventilation groove 33b sends out the cold air to be uniformly blown on the outer surface of the fiber yarn, and the fiber yarn is blown by the cold air at different positions to be positioned at the center position of the cooling groove 33c, so that the fiber yarn is kept inside to be prevented from contacting with the inner side of the inner tube 33d, and the fiber yarn is slowly sent out from the cooling groove 33c to finish the cooling work.
The invention solves the problems that in the prior art, as the fiber-grade polypropylene is melted at high temperature and extruded, the extruded silk threads at different parts need to be cooled and formed by air during extrusion, and the extruded silk threads at different parts are pulled during winding, but the cooling degree and the positions of the silk threads are different, and when the silk threads are pulled, part of the silk threads drop down and contact with the silk threads or machine bodies at other parts, so that the incompletely cooled fiber-grade polypropylene is bonded, thereby influencing the winding of the silk threads, the invention arranges a cooling structure outside a discharge port by mutually combining the components, the silk threads are sent out from the discharge port to the inner side of the cooling structure, sends cold air into a pipeline by using an air inlet pipe and sends the cold air into communicating pipes communicated with the pipeline, then respectively sends the cold air into different cooling pipes, and cools the silk threads at the inner side of the cooling pipes at intervals, the fiber yarns are spaced during cooling, so that the fiber yarns which are not completely cooled are prevented from being contacted and bonded and wound in a mode, and the fiber yarns are wound more smoothly; set up the cooling hole in the cooling tube upper end, behind the cellosilk entering cooling tube, cold wind will be respectively from the connector of difference entering into the outer tube inboard, and utilize the ventilation groove to carry cold wind different positions, and be in the inner tube surface, the cooling hole with the ventilation groove intercommunication this moment will see cold wind off, and even blow at the cellosilk surface, and the cellosilk receives the cold wind of different positions to blow, the central point that will be in the cooling groove puts, and then keep preventing in the inboard and the inboard contact of inner tube, better cool off the cellosilk, and prevented when not cooling down completely with the organism contact, and then prevent to bond with the organism, better carry out the roll-up to the cellosilk.
While there have been shown and described what are at present considered the fundamental principles and essential features of the invention and its advantages, it will be apparent to those skilled in the art that the invention is not limited to the details of the foregoing exemplary embodiments, but is capable of other specific forms without departing from the spirit or essential characteristics thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.
Furthermore, it should be understood that although the present description refers to embodiments, not every embodiment may contain only a single embodiment, and such description is for clarity only, and those skilled in the art should integrate the description, and the embodiments may be combined as appropriate to form other embodiments understood by those skilled in the art.
Claims (1)
1. The production equipment of the fiber-grade polypropylene structurally comprises a rack (1), a motor (2), a transmission case (3), a driving case (4), a hopper (5), an extruder (6) and an extrusion structure (7), wherein the motor (2) is installed at the lower end of the inner side of the rack (1), the driving case (4) is horizontally installed at the upper end of the rack (1), the motor (2) is connected with the driving case (4) through the transmission case (3), the extruder (6) is horizontally installed on the right side of the driving case (4), the hopper (5) is vertically installed at the upper end of the extruder (6), and the extrusion structure (7) is installed on the right side of the extruder (6); the method is characterized in that: the extrusion structure (7) comprises a connecting disc (71), a discharge hole (72) and a cooling structure (73), wherein the connecting disc (71) is connected to the right side of the extruder (6), the discharge hole (72) penetrates through the inner side of the connecting disc (71), the cooling structure (73) is installed on the outer side of the connecting disc (71), the cooling structure (73) comprises a pipeline (731), a fixed frame (732), a cooling pipe (733) and an air inlet pipe (734), the pipeline (731) is arranged on the inner side of the fixed frame (732), the cooling pipe (733) is installed on the inner side of the fixed frame (732), the cooling pipe (733) is communicated with the pipeline (731), the pipeline (731) is installed at the lower end of the outer surface of the air inlet pipe (734), the cooling pipe (733) is embedded into the inner side of the discharge hole (72), and the cooling pipe (733) is provided with a plurality of pipes and annularly distributed on the inner side of the fixed frame (732), the cooling pipes (733) are in one-to-one correspondence with the discharge holes (72), a communicating pipe (33z) is arranged on the outer surface of the cooling pipe (733), the communicating pipe (33z) is provided with a plurality of communicating pipes (731) and the cooling pipe (733) respectively, the cooling pipe (733) comprises an outer pipe (33a), a ventilation groove (33b), a cooling groove (33c), an inner pipe (33d) and a connecting port (33e), the inner pipe (33d) is arranged on the inner side of the outer pipe (33a) and forms the ventilation groove (33b), the cooling groove (33c) penetrates through the inner pipe (33d), the connecting port (33e) penetrates through the outer pipe (33a) and is communicated with the ventilation groove (33b), the outer pipe (33a) is a transversely extending pipe body, the connecting port (33e) is provided with a plurality of communicating pipes and is equidistantly distributed at the upper end of the outer pipe (33a), the upper end of the inner pipe (33d) is provided with a cooling port (d1), the cooling port (d1) is communicated with the ventilation groove (33b), a plurality of cooling ports (d1) are arranged, and the air outlet directions of the cooling ports (d1) on the same ring shape converge at one point; the raw materials are sent to the inner side of the extruder (6) by the hopper (5), at the moment, the motor (2) starts to work and drives the transmission box (3) to ensure that the extruder (6) connected with the driving box (4) starts to work, melting the raw materials and extruding the raw materials to an extruding structure (7), wherein the fiber filaments are sent out from a discharge hole (72), and coming to the inner side of the cooling structure (73), the air inlet pipe (734) is used to send cold air into the pipeline (731), and sent to a communicating pipe (33z) communicated with the cooling pipe, and then sent to different cooling pipes (733), cooling the fiber filaments at the inner side of the cooling pipe (733) at intervals, and the fiber is extruded out along with the continuous work of the extruder (6), sent out of the cooling pipe (733) and further wound up, and the circulation work is carried out.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110070131.7A CN112760734B (en) | 2020-01-10 | 2020-01-10 | Fiber-grade polypropylene production system and use method |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110070131.7A CN112760734B (en) | 2020-01-10 | 2020-01-10 | Fiber-grade polypropylene production system and use method |
| CN202010026898.5A CN111155184B (en) | 2020-01-10 | 2020-01-10 | Production equipment of fiber-grade polypropylene |
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| CN202010026898.5A Division CN111155184B (en) | 2020-01-10 | 2020-01-10 | Production equipment of fiber-grade polypropylene |
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| CN112760734A CN112760734A (en) | 2021-05-07 |
| CN112760734B true CN112760734B (en) | 2022-04-01 |
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| CN202010026898.5A Active CN111155184B (en) | 2020-01-10 | 2020-01-10 | Production equipment of fiber-grade polypropylene |
| CN202110070131.7A Active CN112760734B (en) | 2020-01-10 | 2020-01-10 | Fiber-grade polypropylene production system and use method |
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| CN113681864B (en) * | 2021-08-25 | 2023-12-15 | 汕头市龙盛实业有限公司 | Interval heating plastic extruder |
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| DE3923067C2 (en) * | 1988-07-16 | 1994-02-03 | Barmag Barmer Maschf | Spinning plant for chemical fibers |
| IT1227263B (en) * | 1988-10-03 | 1991-03-28 | Filteco Spa | APPARATUS AND SPINNING METHOD FOR EXTRUSION |
| KR100305668B1 (en) * | 1999-09-13 | 2001-09-24 | 조민호 | Multifilament Quenching Apparatus |
| DE10116294A1 (en) * | 2001-03-31 | 2002-10-10 | Barmag Barmer Maschf | Melt-spinning thermoplastic filament bundles from nozzles to form composite thread, employs separate cooling for each bundle to differentiate crystallization |
| DE10200405A1 (en) * | 2002-01-08 | 2002-08-01 | Zimmer Ag | Cooling blowing spinning apparatus and process |
| US6878327B2 (en) * | 2002-04-19 | 2005-04-12 | Fina Technology, Inc. | Process of making polypropylene fibers |
| CN201236247Y (en) * | 2008-07-25 | 2009-05-13 | 江苏恒力化纤有限公司 | Elasticizer cooling apparatus |
| DE202008015311U1 (en) * | 2008-09-16 | 2009-04-30 | Oerlikon Textile Gmbh & Co. Kg | Apparatus for cooling a plurality of synthetic filament bundles |
| CN202401178U (en) * | 2011-12-06 | 2012-08-29 | 连云港蓝翔机械设备有限公司 | PE/PP (polyethylene/propene polymer) plastic round wire drawing device |
| EP2951338B1 (en) * | 2013-02-04 | 2016-09-28 | NV Bekaert SA | Quench tube for polymer fiber extrusion |
| CN204325566U (en) * | 2014-06-13 | 2015-05-13 | 太仓振辉化纤有限公司 | A kind of allocation of the amount of air air duct |
| CN204982153U (en) * | 2015-10-10 | 2016-01-20 | 诸暨华海氨纶有限公司 | Spandex silk spouts antiwind device of a device |
| CN205398790U (en) * | 2016-02-23 | 2016-07-27 | 上海铁美机械有限公司 | Novel spinning ring blows device |
| CN106192029B (en) * | 2016-09-30 | 2018-03-09 | 苏州金泉新材料股份有限公司 | The gradient type ring wind quenching device of polylactic acid short-fiber super high-speed spinning |
| CN206692791U (en) * | 2017-04-25 | 2017-12-01 | 潍坊美珂新材料有限公司 | A kind of composite filament production device for spinning |
| CN206855982U (en) * | 2017-06-29 | 2018-01-09 | 江西省龙晨管业科技发展有限责任公司 | A kind of polypropylene pipe extrusion production equipment |
| CN207987514U (en) * | 2018-01-25 | 2018-10-19 | 吴江市天缘纺织有限公司 | A kind of starching machine cooling device |
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| CN109881274B (en) * | 2019-03-04 | 2020-08-11 | 浙江恒百华化纤有限公司 | POY silk production facility |
| CN110575806A (en) * | 2019-06-28 | 2019-12-17 | 范儒毅 | Fiber-grade polypropylene production equipment |
| CN110524844A (en) * | 2019-07-29 | 2019-12-03 | 林振亮 | A kind of PVC pipe cooling and shaping equipment |
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2020
- 2020-01-10 CN CN202010026898.5A patent/CN111155184B/en active Active
- 2020-01-10 CN CN202110070131.7A patent/CN112760734B/en active Active
Also Published As
| Publication number | Publication date |
|---|---|
| CN111155184B (en) | 2021-04-20 |
| CN112760734A (en) | 2021-05-07 |
| CN111155184A (en) | 2020-05-15 |
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