CN102863612A - Polyester postaddition melt modifying system - Google Patents
Polyester postaddition melt modifying system Download PDFInfo
- Publication number
- CN102863612A CN102863612A CN2011101892318A CN201110189231A CN102863612A CN 102863612 A CN102863612 A CN 102863612A CN 2011101892318 A CN2011101892318 A CN 2011101892318A CN 201110189231 A CN201110189231 A CN 201110189231A CN 102863612 A CN102863612 A CN 102863612A
- Authority
- CN
- China
- Prior art keywords
- melt
- additive
- polyester
- add
- screw rod
- 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.)
- Granted
Links
Images
Landscapes
- Processing And Handling Of Plastics And Other Materials For Molding In General (AREA)
- Processes Of Treating Macromolecular Substances (AREA)
- Polyesters Or Polycarbonates (AREA)
Abstract
The invention discloses a polyester postaddition melt modifying system, which belongs to the field of a polyester production technology. The polyester postaddition melt modifying system comprises a melt main pipe, a blending screw, a melt filter, a fluid converter and multiple melt pumps. In addition, the polyester postaddition melt modifying system further comprises a vacuum drying apparatus and/or a vacuum suction device. According to the polyester postaddition melt modifying system provided by the invention, as the vacuum drying device is arranged, an additive can be completely and uniformly dried before entering the modifying system, and further, the moisture brought into the modifying system through the additive can be reduced as much as possible; and as the vacuum suction device is arranged in the modifying system to suck the moisture removed from the additive after the additive and a melt are mixed, the moisture in the modifying system is further reduced, and further, the influence on the intrinsic viscosity of the melt, due to the addition of the additive, is finally reduced.
Description
Technical field
The present invention relates to the production of polyester field, relate in particular to and add the melt modification system behind a kind of polyester.
Background technology
In polyester production process, in order to access the polyester product with superior over-all properties, usually can before melt extruded, in polyester fondant, add additive at present, melt is carried out modification.Adding melt modification technique behind the polyester mainly finishes by following process: polyester fondant is sent to the blend screw rod, additive is added the blend screw rod, melt and additive fully are mixed to get the modification melt, filter the impurity in the modification melt, regulate the pressure of modification melt, at last the modification melt is sent to subsequent processing.
But in actual production process, although detect by analysis the over-all properties of finding melt modification has been improved the finished product, but the limiting viscosity fall of the finished product is 0.03-0.04, has exceeded the limiting viscosity fall 0.02 that system design allows.Causing the factor of melt characteristic viscosity degradation to reach by analysis production technique adjustment is found, mainly is the decline that the interior moisture of additive has caused melt characteristic viscosity.
Summary of the invention
The adding that the purpose of this invention is to provide a kind of additive is added the melt modification system after on the little polyester of the impact of melt characteristic viscosity.
In order to achieve the above object, the present invention adopts following technical scheme:
Add the melt modification system behind a kind of polyester, comprise melt supervisor, blend screw rod, fondant filter, fluid switch, the first to the 3rd Melt Pump, described blend screw rod has melt opening for feed, additive opening for feed and modification melt discharge port, wherein, described melt supervisor is connected with the melt opening for feed of described blend screw rod by described the first Melt Pump; The modification melt discharge port of described blend screw rod is connected with an end of described fondant filter by described the second Melt Pump, the other end of described fondant filter is connected with described fluid switch by described the 3rd Melt Pump, add the melt modification system behind the described polyester and also comprise Minton dryer and/or vacuum suction apparatus, wherein:
Described Minton dryer comprises horizontal tank body, the additive raw material opening for feed, additive discharge port after dry, the opening for feed separation valve door, the discharge port separation valve door, the first vacuum pump, heating unit and vibrating device, described horizontal tank body and described additive raw material opening for feed, additive discharge port after dry, the first vacuum pump connects respectively, described opening for feed separation valve door, the discharge port separation valve door is separately positioned on described horizontal tank body and additive raw material opening for feed, between the dry rear additive discharge port, described horizontal tank body has heating jacket, described heating jacket is connected with described heating unit, described vibrating device is connected with described horizontal tank body, and the additive discharge port is connected with the additive opening for feed of described blend screw rod after the described drying;
Described vacuum suction apparatus comprises the second vacuum pump, and described the second vacuum pump is connected with described blend screw rod.
Further, described Minton dryer also comprises condensing works, and described condensing works is connected with described the first vacuum pump.
Further, described Minton dryer also comprises washing unit, and described washing unit is connected with described horizontal tank body.
Further, the heat conduction media in the heating jacket of described Minton dryer are any one of water, thermal oil and low-pressure steam.
Further, be provided with vacuum degree measuring equipment on the horizontal tank body of described Minton dryer.
Further, described Minton dryer also comprises the heat source recovery device that is connected with heating jacket with described condensing works.
Further, be connected with sprinkling system between described the second vacuum pump and the blend screw rod.
Further, described sprinkling system is the ethylene glycol sprinkling system.
Further, described the second vacuum pump also directly is connected with described blend screw rod by pipeline, is provided with control valve on described the second vacuum pump and the direct-connected pipeline of blend screw rod.
Further, add the melt modification system behind the described polyester and also comprise the 4th Melt Pump, described melt supervisor also directly is connected with described fluid switch by described the 4th Melt Pump.
Add the melt modification system behind the polyester of the present invention, by Minton dryer is set in reforming system, can be before additive enter reforming system, additive is carried out fully and dry equably, thereby reduce as much as possible to bring moisture in the reforming system into by additive; And by vacuum suction apparatus is set in reforming system, can be after additive and melt-mixing, the moisture that suction is deviate from the additive further reduces the moisture in the reforming system, thereby finally reduces the adding of additive to the impact of melt characteristic viscosity.
Description of drawings
Fig. 1 is the structural representation that adds the melt modification system behind the polyester of the present invention;
Fig. 2 is the structural representation of the Minton dryer among Fig. 1.
Description of reference numerals
100 ... the melt modification system; 101 ... the melt supervisor; 102 ... the blend screw rod; 103 ... fondant filter; 104 ... fluid switch; 105 ... the first Melt Pump; 106 ... the second Melt Pump; 107 ... the 3rd Melt Pump; 108 ... the melt opening for feed; 109 ... the additive opening for feed; 110 ... modification melt discharge port; 111 ... the 4th Melt Pump; 200 ... Minton dryer; 201 ... horizontal body; 202 ... the additive raw material opening for feed; 203 ... additive discharge port after dry; 204 ... the opening for feed separation valve door; 205 ... the discharge port separation valve door; 206 ... the first vacuum pump; 207 ... heating unit; 208 ... vibrating device; 209 ... heating jacket; 210 ... condensing works; 211 ... heat source recovery device; 212 ... washing unit; 213 ... vacuum degree measuring equipment;
300 ... vacuum pick-up system; 301 ... the second vacuum pump; 302 ... sprinkling system; 303 ... the vacuum drawn point; 304 ... control valve; 305 ... spray pump; 306 ... the PIC micro-chip.
Embodiment
In order to make purpose of the present invention, technical scheme and advantage clearer, below in conjunction with drawings and Examples, the present invention is further elaborated.Specific embodiment described herein is only in order to explaining the present invention, but is not intended to limit the present invention.
As depicted in figs. 1 and 2, add melt modification system 100 after the invention provides a kind of polyester, comprise melt supervisor 101, blend screw rod 102, fondant filter 103, fluid switch 104, the first Melt Pump 105, the second Melt Pump 106 and the 3rd Melt Pump 107, blend screw rod 102 has melt opening for feed 108, additive opening for feed 109 and modification melt discharge port 110, wherein, melt supervisor 101 is connected with melt opening for feed 108 by the first Melt Pump 105; Modification melt discharge port 110 is connected with an end of fondant filter 103 by the second Melt Pump 106, the other end of fondant filter 103 is connected with fluid switch 104 by the 3rd Melt Pump 107, add melt modification system 100 behind the polyester and also comprise Minton dryer 200 and vacuum suction apparatus 300, wherein:
Minton dryer 200 comprises horizontal tank body 201, additive raw material opening for feed 202, additive discharge port 203 after dry, opening for feed separation valve door 204, discharge port separation valve door 205, the first vacuum pump 206, heating unit 207 and vibrating device 208, horizontal tank body 201 and additive raw material opening for feed 202, additive discharge port 203 after dry, the first vacuum pump 206 connects respectively, opening for feed separation valve door 204, discharge port separation valve door 205 is separately positioned on horizontal tank body 201 and additive raw material opening for feed 202, between the dry rear additive discharge port 203, horizontal tank body 201 has heating jacket 209, heating jacket 209 is connected with heating unit 207, vibrating device 208 is connected with horizontal tank body 201, and dry rear additive discharge port 203 is connected with the additive opening for feed 109 of blend screw rod 102;
Add the melt modification system behind the polyester of the present invention, by Minton dryer is set in reforming system, can be before additive enter reforming system, additive is carried out fully and dry equably, thereby reduce as much as possible to bring moisture in the reforming system into by additive; And by vacuum suction apparatus is set in reforming system, can be after additive and melt-mixing, the moisture that suction is deviate from the additive further reduces the moisture in the reforming system, thereby finally reduces the adding of additive to the impact of melt characteristic viscosity.
In addition, take heat recovery and utilization as purpose, Minton dryer 200 can also arrange condensing works 210, and condensing works 210 preferably is connected with the first vacuum pump 206.
Further, Minton dryer 200 can also arrange the heat source recovery device 211 that is connected with heating jacket 209 with condensing works 210, thus more save energy, reduce production costs.
Simultaneously, for can dedusting and sterilization, Minton dryer 200 can also comprise washing unit 212, and washing unit 212 preferably is connected with horizontal tank body 201.
And the heat conduction media in the heating jacket 209 of Minton dryer 200 can be any one of water, thermal oil and low-pressure steam.Certainly the heat conduction media of indication also can be other conduction materials that are fit to herein, perhaps for making the heating agent of the certain Heating temperature of inner tank wall maintenance.
Apart from the above, the vacuum tightness in the horizontal tank body 201 that can monitor at any time Minton dryer 200 preferably arranges vacuum degree measuring equipment 213 on the horizontal tank body 201.
In vacuum suction apparatus 300, in order to pounce on the degradation of small molecular that gathers the ester melt, preferably connect sprinkling system 302 between the second vacuum pump 301 and the blend screw rod 102.Wherein, in order to reach the good collection effect of pouncing on, sprinkling system 302 is preferably the ethylene glycol sprinkling system, and this ethylene glycol sprinkling system can comprise spray pump 305, pounces on the collection amount by the spray of spray pump 305 controlled preparing ethylene glycols.
In addition, the second vacuum pump 301 can also directly be connected with blend screw rod 102 by pipeline, mode of connection can for, at blend screw rod 102 one or more vacuum suction points are set, then pipeline and these vacuum suction points is continuous, thus finish being connected of the second vacuum pump 301 and blend screw rod 102.In the present embodiment, 2 vacuum drawn points 303 preferably are set.And, on the second vacuum pump 301 and blend screw rod 102 direct-connected pipelines, control valve 304 is set preferably.
In other embodiments of the invention, all can be provided with control valve 304 and under meter on the connecting pipeline of the second vacuum pump 301 and blend screw rod 102.Thus, but by the just flow situation of gas in this vacuum pick-up system of Real Time Monitoring of control valve 304 and under meter, and can carry out regulating and controlling according to Production requirement.Obviously can adopt in the present invention PIC micro-chip 306 to come the running of automatization ground control the second vacuum pump 301 and sprinkling system 302.
Simultaneously, in order to make the use range of adding melt modification system 100 behind the polyester more versatile and flexible, add melt modification system 100 behind the polyester and can also comprise the 4th Melt Pump 111, melt supervisor 102 can also directly be connected with fluid switch 104 by the 4th Melt Pump 111.
Below in conjunction with Fig. 1 and Fig. 2, specify the working condition of adding melt modification system 100 behind the polyester of the present invention.
The working condition of Minton dryer 200 at first is described.As shown in Figure 2, additive to be dried is filled in the additive raw material opening for feed 202, opens opening for feed separation valve door 204, additive is transferred in the horizontal tank body 201, and close opening for feed separation valve door 204, and start the first vacuum pump 206, horizontal tank body 201 is evacuated to vacuum state;
Then, start simultaneously heating unit 207 and vibrating device 208, vibrating device 208 is installed on the base of horizontal tank body 201, the mechanical exciting force of its generation drives horizontal tank body 201 generations and is synchronized with the movement, and makes the interior additive of tank body under vacuum state, through secondary ballistic fluidisation, be suspended state, produce exciting force because tank body passes through mechanical exciting simultaneously, make interior each position of tank body by 900---1800UPM vibration, the amplitude of generation 15-35mm; At this moment, additive in the tank body becomes fluidized state under the effect of vibrating device 208, and fully contact with the inwall of horizontal tank body 201, realize the heat transmission and constantly update heating surface, the storeroom lamellar spacing is increased, carry out heat exchange by the hot media in the heating jacket 209, the temperature of additive is constantly raise, water molecules in the additive or the solvent disengaging of gasifying rapidly, the water molecules that has gasified and solvent rise rapidly and are taken away by the first vacuum pump 206;
In said process, the vacuum tightness of 212 pairs of horizontal tank bodies of vacuum degree measuring equipment, 201 inside is monitored, when this low vacuum during in a certain preset value, heating unit 207 stops horizontal tank body 201 heating, the first vacuum pump 206 continues horizontal tank body 201 is carried out vacuum pumping, until this tank body vacuum tightness meets or exceeds described preset value, heating unit 207 begins that horizontal tank body is continued heating and reaches drying purpose;
At last, after a scheduled time, vacuum pump 206 stops vacuum pumping, heating unit 207 stopped heatings, open discharge port separation valve door 205, dried additive is taken out to dry rear additive discharge port 203, close discharge port separation valve door 205, close vibrating device 208, whole drying process is finished again.The additive that additive discharge port 203 takes out after the drying directly by the additive opening for feed 109 of blend screw rod 102, enters blend screw rod 102, and preparation mixes with polyester fondant.
At the same time, as shown in Figure 1, the polyester fondant that needs modification is through melt supervisor 100, and is sent to blend screw rod 102 by the first Melt Pump 105 and melt opening for feed 108, mixes with above-mentioned dried additive in blend screw rod 102.
When polyester fondant and additive mixed, vacuum suction apparatus 300 was started working.At first start the second vacuum pump 301 by PIC micro-chip 306, begin to vacuumize; Then the second vacuum pump 301 is by pipeline and the vacuum drawn point 303 that is arranged on the blend screw rod 102, the steam and the small molecules degraded gas that produce after additive and the polyester fondant mixing are extracted out from blend screw rod 102, and be sent to sprinkling system 302 (being in the present embodiment the ethylene glycol sprinkling system) along pipeline; Then in sprinkling system 302, spray the collection work of pouncing on by the degradation of small molecular in 305 pairs of gases of PIC micro-chip 306 control spray pumps; At last steam is discharged vacuum suction apparatus 300, so far vacuum suction apparatus is finished the work.
In vacuum suction apparatus 300 work, polyester fondant is by mixing with dried additive, and by generation steam after mixing, thereby carry out modification; Melt after the modification flows into pipeline by the modification melt discharge port 110 of blend screw rod 102, and is transported to fondant filter 103 by the second Melt Pump 106; Modification melt after fondant filter 103 filters by pipeline and the second Melt Pump 107, is sent to fluid switch 104; The subsequent processing that last melt is sent to through fluid switch 104.So far the work of adding melt modification system 100 behind the polyester of present embodiment is finished.
Add the melt modification system behind the polyester of the present invention, by Minton dryer is set in reforming system, can be before additive enter reforming system, additive is carried out fully and dry equably, thereby reduce as much as possible to bring moisture in the reforming system into by additive; And by vacuum suction apparatus is set in reforming system, can be after additive and melt-mixing, the moisture that suction is deviate from the additive further reduces the moisture in the reforming system, thereby finally reduces the adding of additive to the impact of melt characteristic viscosity.
Certainly, when not needing melt modification, polyester fondant can be responsible for the 101 and the 4th Melt Pump 111 by melt and directly be sent to fluid switch 104, thereby enters subsequent processing.
The above is preferred embodiment of the present invention only, is not to limit practical range of the present invention; If do not break away from the spirit and scope of the present invention, the present invention is made amendment or is equal to replacement, all should be encompassed in the middle of the protection domain of claim of the present invention.
Claims (10)
1. add the melt modification system behind a polyester, comprise melt supervisor, blend screw rod, fondant filter, fluid switch, the first to the 3rd Melt Pump, described blend screw rod has melt opening for feed, additive opening for feed and modification melt discharge port, wherein, described melt supervisor is connected with the melt opening for feed of described blend screw rod by described the first Melt Pump; The modification melt discharge port of described blend screw rod is connected with an end of described fondant filter by described the second Melt Pump, the other end of described fondant filter is connected with described fluid switch by described the 3rd Melt Pump, it is characterized in that, add the melt modification system behind the described polyester and also comprise Minton dryer and/or vacuum suction apparatus, wherein:
Described Minton dryer comprises horizontal tank body, the additive raw material opening for feed, additive discharge port after dry, the opening for feed separation valve door, the discharge port separation valve door, the first vacuum pump, heating unit and vibrating device, described horizontal tank body and described additive raw material opening for feed, additive discharge port after dry, the first vacuum pump connects respectively, described opening for feed separation valve door, the discharge port separation valve door is separately positioned on described horizontal tank body and additive raw material opening for feed, between the dry rear additive discharge port, described horizontal tank body has heating jacket, described heating jacket is connected with described heating unit, described vibrating device is connected with described horizontal tank body, and the additive discharge port is connected with the additive opening for feed of described blend screw rod after the described drying;
Described vacuum suction apparatus comprises the second vacuum pump, and described the second vacuum pump is connected with described blend screw rod.
2. add the melt modification system behind the polyester according to claim 1, it is characterized in that described Minton dryer also comprises condensing works, described condensing works is connected with described the first vacuum pump.
3. add the melt modification system behind the polyester according to claim 1 and 2, it is characterized in that described Minton dryer also comprises washing unit, described washing unit is connected with described horizontal tank body.
4. add the melt modification system behind the polyester according to claim 1 and 2, it is characterized in that the heat conduction media in the heating jacket of described Minton dryer are any one of water, thermal oil and low-pressure steam.
5. add the melt modification system behind the polyester according to claim 1 and 2, it is characterized in that, be provided with vacuum degree measuring equipment on the horizontal tank body of described Minton dryer.
6. add the melt modification system behind the polyester according to claim 2, it is characterized in that described Minton dryer also comprises the heat source recovery device that is connected with heating jacket with described condensing works.
7. add the melt modification system behind the polyester according to claim 1, it is characterized in that, be connected with sprinkling system between described the second vacuum pump and the blend screw rod.
8. add the melt modification system behind the polyester according to claim 7, it is characterized in that described sprinkling system is the ethylene glycol sprinkling system.
9. add the melt modification system behind the polyester according to claim 8, it is characterized in that described the second vacuum pump also directly is connected with described blend screw rod by pipeline, is provided with control valve on described the second vacuum pump and the direct-connected pipeline of blend screw rod.
10. add the melt modification system behind the polyester according to claim 1, it is characterized in that, add the melt modification system behind the described polyester and also comprise the 4th Melt Pump, described melt supervisor also directly is connected with described fluid switch by described the 4th Melt Pump.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110189231.8A CN102863612B (en) | 2011-07-07 | 2011-07-07 | Melt modification system is added after a kind of polyester |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110189231.8A CN102863612B (en) | 2011-07-07 | 2011-07-07 | Melt modification system is added after a kind of polyester |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102863612A true CN102863612A (en) | 2013-01-09 |
| CN102863612B CN102863612B (en) | 2015-10-21 |
Family
ID=47442762
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201110189231.8A Active CN102863612B (en) | 2011-07-07 | 2011-07-07 | Melt modification system is added after a kind of polyester |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102863612B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107245141A (en) * | 2016-04-26 | 2017-10-13 | 宁波浙铁大风化工有限公司 | A kind of makrolon hybrid system |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1569959A (en) * | 2003-07-27 | 2005-01-26 | 横店集团得邦工程塑料有限公司 | Heat and humidity resistant ,enhanced flame-retardant poly-butylene terephthalate composite materials and preparation method thereof |
| CN2743764Y (en) * | 2004-11-22 | 2005-11-30 | 吕江强 | Efficient vacuum vibration drier |
| CN1749318A (en) * | 2005-10-21 | 2006-03-22 | 中国科学院长春应用化学研究所 | The poly lactic acid type composite material preparation method of ternary built completely biological degradation |
| CN101899201A (en) * | 2010-07-28 | 2010-12-01 | 江阴济化新材料有限公司 | Method for preparing PET (Polyethylene Terephthalate) engineering plastic particle of attapulgite fast crystallization |
-
2011
- 2011-07-07 CN CN201110189231.8A patent/CN102863612B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1569959A (en) * | 2003-07-27 | 2005-01-26 | 横店集团得邦工程塑料有限公司 | Heat and humidity resistant ,enhanced flame-retardant poly-butylene terephthalate composite materials and preparation method thereof |
| CN2743764Y (en) * | 2004-11-22 | 2005-11-30 | 吕江强 | Efficient vacuum vibration drier |
| CN1749318A (en) * | 2005-10-21 | 2006-03-22 | 中国科学院长春应用化学研究所 | The poly lactic acid type composite material preparation method of ternary built completely biological degradation |
| CN101899201A (en) * | 2010-07-28 | 2010-12-01 | 江阴济化新材料有限公司 | Method for preparing PET (Polyethylene Terephthalate) engineering plastic particle of attapulgite fast crystallization |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107245141A (en) * | 2016-04-26 | 2017-10-13 | 宁波浙铁大风化工有限公司 | A kind of makrolon hybrid system |
Also Published As
| Publication number | Publication date |
|---|---|
| CN102863612B (en) | 2015-10-21 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN101984263A (en) | Continuous cleaning device for vacuum pump and method thereof | |
| CN104390431A (en) | Vacuum rotary drying device and application method thereof | |
| CN102863612A (en) | Polyester postaddition melt modifying system | |
| CN207763450U (en) | A kind of fire retardant finished product rapid drying device | |
| CN204091773U (en) | Integrated energy-saving steaming-roasting device | |
| CN205495000U (en) | Pressure spraying drying tower with quick forced air cooling cooling function | |
| CN204240710U (en) | Boiling type Chinese medicine drying machine | |
| CN201884243U (en) | Vacuum pump continuous cleaning device | |
| CN204535308U (en) | The husky fine granularity of a kind of oven dry is from screening plant | |
| CN104315804B (en) | A kind of boiling type drying machine for Chinese medicine drying | |
| CN204254976U (en) | A kind of vacuum dried flower equipment | |
| CN210569707U (en) | Drying device for producing hydroxypropyl methyl cellulose | |
| CN210801947U (en) | Drying equipment for fine chemical engineering | |
| CN208193779U (en) | A kind of integration diaphragm filter press | |
| CN204240739U (en) | Cyclone drying formula Chinese medicine boiling drier | |
| CN103538199B (en) | Polystyrene sends out aging system in advance | |
| CN206648419U (en) | A kind of chemical fibre raw material drying unit | |
| CN204901767U (en) | Energy -concerving and environment -protective high -efficient cremation machine | |
| CN209438059U (en) | A kind of dry machine of rake of Petroleum Refining Additives production | |
| CN105157367B (en) | Adjustable Scroll-tupe air flow oven | |
| CN209548727U (en) | One kind being used to prepare graphite product spray dryer | |
| CN204672252U (en) | The structure of spraying spray gun at the bottom of fluid bed changed by a kind of line that can be implemented in | |
| CN203889663U (en) | Purging device used at blind end of pipeline | |
| CN219037098U (en) | Loose damping hot air heater wiper mechanism | |
| CN109551688A (en) | The vulcanizer of Multi-layer warming slab construction |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20181207 Address after: 223 700 No. 88 Changjiang South Road, Eastern District of Siyang Economic Development Zone, Suqian City, Jiangsu Province Patentee after: Jiangsu Haixin Fiber Co. Ltd. Address before: 215428 Shalu Highway 99, Jungjing Town, Taicang City, Jiangsu Province Patentee before: Jiangsu Shenjiu Chemical Fiber Co., Ltd. |
|
| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20210930 Address after: 223700 No. 88, Changjiang South Road, economic development zone, Siyang County, Suqian City, Jiangsu Province Patentee after: Jiangsu Tongkun Hengxin New Material Co.,Ltd. Address before: 223 700 No. 88 Changjiang South Road, Eastern District of Siyang Economic Development Zone, Suqian City, Jiangsu Province Patentee before: JIANGSU HAIXIN FIBER Co.,Ltd. |