CN103978660A - Single-screw extrusion cavity with good mixing effect - Google Patents
Single-screw extrusion cavity with good mixing effect Download PDFInfo
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- CN103978660A CN103978660A CN201410179362.1A CN201410179362A CN103978660A CN 103978660 A CN103978660 A CN 103978660A CN 201410179362 A CN201410179362 A CN 201410179362A CN 103978660 A CN103978660 A CN 103978660A
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- Prior art keywords
- extrusion
- screw thread
- annular seal
- seal space
- housing
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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
- B29C48/59—Screws characterised by details of the thread, i.e. the shape of a single thread of the material-feeding screw
-
- 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
- B29C48/685—Barrels or cylinders characterised by their inner surfaces, e.g. having grooves, projections or threads
- B29C48/687—Barrels or cylinders characterised by their inner surfaces, e.g. having grooves, projections or threads having projections with a short length in the barrel direction, e.g. pins
-
- 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
- B29C48/397—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 a single screw
-
- 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
- B29C48/78—Thermal treatment of the extrusion moulding material or of preformed parts or layers, e.g. by heating or cooling
- B29C48/80—Thermal treatment of the extrusion moulding material or of preformed parts or layers, e.g. by heating or cooling at the plasticising zone, e.g. by heating cylinders
- B29C48/83—Heating or cooling the cylinders
- B29C48/834—Cooling
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Extrusion Moulding Of Plastics Or The Like (AREA)
Abstract
The invention discloses a single-screw extrusion cavity with a high mixing effect. The extrusion cavity comprises an extrusion rod combined by different screw threads, a seal cavity shell body, a cooling cavity shell body, an extrusion port close plate and a material guiding baffle plate; the seal cavity shell body is internally provided with a cylindrical seal cavity, and the inner side of the seal cavity shell body is provided with four groups of pin structures; the screw-thread extrusion rod is provided with two extrusion screw threads formed by combining different shapes; the outlet end of the seal cavity shell body is provided with the extrusion port close plate; the diameter of an extrusion port of the extrusion port close plate is 1.1-1.3 cm. Through shrinking the pore diameter of an extrusion port of a cavity body of a conventional commonly-used single-screw extruder, the pressure between the extrusion cavity internal screw-thread extrusion rod and mixed materials is improved, and at the same time, with cooperation of the multiple groups of pin structures inside an extrusion cavity, uniform stress between different materials at positions in the extruder seal cavity is ensured, and the mixing effect of whole powder coating raw materials is improved; and a produced product is high in density and high in glossiness, the materials are convenient to discharge by the intermittent extrusion screw threads, and large-scale continuity production of enterprises is convenient.
Description
Technical field
The present invention relates to a kind of production equipment field of powdery paints, relate in particular to a kind of single Screw Extrusion chamber of improving Mixing Efficiency of Single Screw Extruder.
Background technology
The thermoplastics such as that single screw extrusion machine is mainly used in extruding is soft, PVC-U, polyethylene, can process multiple plastic products, as blown film, squeeze pipe, pressing plate, hot candied band etc., also can be used for melt pelletization.Plastic extruder advanced design, quality is high, plastifies, and energy consumption is low, adopts Involutes Gears Transmission, has noise low, smooth running, the feature such as bearing capacity is large, and the life-span is long.
The extrusion diameter of current single screw extrusion machine is on the market generally 2cm, because the radially area of outlet is larger, stressed less in the cavity of extruder of the raw material of powdery paints, the time of staying is shorter, and then has caused raw material can not reach good melting effect in the extruding cavity of extruder; Due to extruding cavity internal thread, extrude the particularity of bar structure, although the continuous contact area of extruding screw thread and raw material is larger, its discharging efficiency is relatively low simultaneously, is difficult to carry out continuous material operation in actual production process.
Summary of the invention
For the problem of above-mentioned existence, the high single Screw Extrusion chamber of melting effect when the object of the invention is to provide the single screw rod of a kind of convenience to extrude operation.
In order to achieve the above object, the technical solution used in the present invention is as follows: single Screw Extrusion chamber that a kind of melting effect is high, described extruding cavity is inner adopts single screw thread to extrude bar, described screw thread is extruded on the transmission device that bar is connected to extruding cavity side, described extruding cavity comprises that screw thread extrudes bar, annular seal space housing, cooling chamber housing, extrusion shrouding and draw material baffle plate, described annular seal space housing by two rectangular housing by the airtight airtight integral body being combined into of rotating shaft of bottom, in described annular seal space housing, be provided with columniform annular seal space, the both sides of described annular seal space housing are provided with cooling chamber housing, the port of export of described annular seal space housing is provided with extrusion shrouding, the extrusion diameter of described extrusion shrouding is 1.1-1.3cm, the below of described extrusion shrouding is provided with draws material baffle plate.
Screw thread of the present invention is extruded bar and is extruded screw thread for being provided with two sections, be respectively that discontinuous is extruded screw thread and continous way is extruded screw thread, described continous way is extruded screw thread and is arranged on the driving end that screw thread is extruded bar, and described discontinuous is extruded screw thread and is arranged on the extrusion end that screw thread is extruded bar.The screw thread disconnection spacing that described discontinuous is extruded screw thread is 1.3-1.5cm; The discharging efficiency of extruding screw thread due to continous way is lower, therefore by the discontinuous adding at the extruding cavity port of export, extrudes the discharging that screw thread facilitates raw material; Because the aperture of extrusion of the present invention is less, inside cavity pressure is larger, and the melting effect of raw material is good, and the screw thread disconnection spacing that discontinuous is extruded screw thread is greater than extrusion diameter 0.1-0.2cm, improves raw material and extrudes the discharging efficiency between bar and extrusion at screw thread.
Extrusion shrouding of the present invention is sleeved on the annular seal space housing port of export by nut structure, the inner side of the cylindrical extrusion on described extrusion shrouding be provided with taper draw material mouthful.The diameter of osculum end that material mouth is drawn in described taper is identical with the diameter of extrusion, and the diameter of big opening end is less than annular seal space internal diameter 0.8-1.0cm; Extrusion shrouding is mainly used in controlling the discharging diameter of extrusion and the blend pressure of annular seal space inside, guarantee raw material melting effect, under pressure by the extrusion that material mouthful facilitates raw material to enter that draws of taper, extrude effective, prevent that raw material from remaining on the housing of annular seal space inside, extrusion shrouding dismounting simultaneously and cleaning are convenient, and the inspection and maintenance cost of device is lower.
The inner side of annular seal space housing of the present invention is provided with four groups of pin feature, the installation angle of two groups of adjacent pin feature is 90 °, by pin feature, be mainly in order to facilitate raw material in the mixing of annular seal space inside, improve raw material and annular seal space housing and screw thread and extrude the contact area of bar, improved the melting effect of single unit system.
Single group pin feature of the present invention comprises three pins, and the spacing between two adjacent pins is identical with the distance of pin and annular seal space two end housing body of the present invention; By equally distributed pin feature, guaranteed that on interior each position of annular seal space, screw thread is extruded the uniform stressed between bar and raw material, prevent the phenomenon that local pressure part material uneven and that cause gathers, melting effect is high.
The top of two rectangular housing of the present invention is distributed with two handles structures; Rotating shaft by grip structure and annular seal space housing bottom is easy to open and closes annular seal space housing, facilitates dismounting and the cleaning of annular seal space inside, simple to operation, time saving and energy saving.
In cooling chamber housing of the present invention, be provided with many group cooling water pipelines; Due to the extruding cavity of extruder when the work because mechanical friction easily produces a large amount of heats, by cooling water pipeline coolant seal cavity shell, guarantee the normal operating temperature of extruding cavity, improve the service life of extruding cavity.
The invention has the advantages that: the present invention is by dwindling the aperture of the cavity extrusion of the extruder of existing conventional single screw rod, improve extruding cavity internal whorl and extruded the pressure between bar and mixed material, the many groups pin feature that simultaneously coordinates extruding cavity inside, guaranteed in extruder annular seal space on each position between different material uniform stressed, improved the melting effect of integrated powder coating raw material; The product density of producing is thus high, glossiness high (as shown in the table); The discharging efficiency of device is high, extrudes screw thread facilitate discharging by discontinuous, facilitates the extensive consecutive production of enterprise.
| the contents of a project | prior art | the present invention |
| gloss | 75-80% | 80-88% |
| outward appearance | naked eyes range estimation: have pin hole and little shrinkage cavity | naked eyes range estimation: surfacing, free of pinholes and little shrinkage cavity. |
| impact resistance | 30Kg.cm2 | 50Kg.cm2 |
Accompanying drawing explanation
Fig. 1 is side cross section structure figure of the present invention.
Fig. 2 is extrusion closing plate structure sketch of the present invention.
Fig. 3 is plan structure sketch of the present invention.
Wherein, 1 annular seal space housing, 2 screw threads are extruded bar, 3 extrusion shroudings, 4 transmission devices, 5 draw material baffle plate, 6 rotating shafts, 7 grip structures, 8 extrusions, mouth is expected in drawing of 9 tapers, 10 discontinuous are extruded screw thread, and 11 continous ways are extruded screw thread, 12 pins, 13 cooling water pipelines, 14 cooling chamber housings.
The specific embodiment
Below in conjunction with accompanying drawing explanation and the specific embodiment to the present invention further detailed explanation.
embodiment 1:single Screw Extrusion chamber that a kind of melting effect is high as shown in figs. 1 and 3, described extruding cavity is inner adopts single screw thread of following to extrude bar 2, described screw thread is extruded on the transmission device 4 that bar 2 is connected to extruding cavity side, described extruding cavity comprises that screw thread extrudes bar 2, annular seal space housing 1, cooling chamber housing 14, extrusion shrouding 3 is expected baffle plate 5 with drawing, described annular seal space housing 1 by two rectangular housing by the airtight airtight integral body being combined into of rotating shaft 6 of bottom, in described annular seal space housing 1, be provided with columniform annular seal space, the both sides of described annular seal space housing 1 are provided with cooling chamber housing 14, the port of export of described annular seal space housing 1 is provided with extrusion shrouding 3, the diameter of the extrusion 8 of described extrusion shrouding 3 is 1.1-1.3cm, the below of described extrusion shrouding 3 is provided with draws material baffle plate 5.
embodiment 2:as shown in Figure 1, screw thread is extruded bar 2 and is extruded screw thread for being provided with two sections, be respectively that discontinuous is extruded screw thread 10 and continous way is extruded screw thread 11, described continous way is extruded screw thread 11 and is arranged on the link that screw thread is extruded the transmission device 4 of bar 2, and described discontinuous is extruded screw thread 10 and is arranged on the extrusion end that screw thread is extruded bar 2.The screw thread disconnection spacing that described discontinuous is extruded screw thread 10 is 1.3-1.5cm; The discharging efficiency of extruding screw thread 11 due to continous way is lower, therefore by the discontinuous adding at the extruding cavity port of export, extrudes the discharging that screw thread 10 facilitates raw material; Because the aperture of extrusion 8 of the present invention is less, inside cavity pressure is larger, the melting effect of raw material is good, and the screw thread disconnection spacing that discontinuous is extruded screw thread 10 is greater than extrusion 8 diameter 0.1-0.2cm, improves raw material and extrudes the discharging efficiency between bar 2 and extrusion 8 at screw thread.
embodiment 3:as shown in Figure 1,2 and 3, extrusion shrouding 3 is sleeved on the port of export of annular seal space housing 1 by nut structure, and what the inner side of the cylindrical extrusion 8 on described extrusion shrouding 3 was provided with taper draws material mouthfuls 9.The diameter that the osculum end of expecting mouth 9 is drawn in described taper is identical with the diameter of extrusion 8, and the diameter of big opening end is less than the internal diameter 0.8-1.0cm of annular seal space 1; Extrusion shrouding 3 is mainly used in controlling the discharging diameter of extrusion 8 and the blend pressure of annular seal space 1 inside, guarantee the melting effect of annular seal space inside, by drawing of taper, expect mouthful 9 extrusions 8 that facilitate raw material to enter under pressure, extrude effective, prevent that raw material from remaining on the housing of annular seal space 1 inside, extrusion shrouding 3 dismounting simultaneously and cleaning are convenient, and the inspection and maintenance cost of device is lower.
embodiment 4:as shown in Figure 1, the inner side of annular seal space housing 1 of the present invention is provided with four groups of pin feature 12, the installation angle of two groups of adjacent pin feature 12 is 90 °, by pin 12 structures, be mainly in order to facilitate raw material in the mixing of annular seal space 1 inside, improve raw material and annular seal space housing 1 and screw thread and extrude the contact area of bar 2, improved the melting effect of single unit system.Single group pin feature 12 of the present invention comprises three pins, and the spacing between two adjacent pins is identical with the distance of pin and annular seal space two end housing body of the present invention; By equally distributed pin feature 12, guaranteed that on interior each position of annular seal space 1, screw thread is extruded the uniform stressed between bar 2 and raw material, prevent the phenomenon that local pressure part material uneven and that cause gathers, melting effect is high.
embodiment 5:as shown in figs. 1 and 3, the top of two rectangular housing is distributed with two handles structures 7; Rotating shaft 6 by grip structure 7 and annular seal space housing 1 bottom is easy to open and closes annular seal space housing 1, facilitates dismounting and the cleaning of annular seal space inside, simple to operation, time saving and energy saving.
embodiment 6:as shown in Figure 3, in cooling chamber housing 14, be provided with many group cooling water pipelines 13; Due to the extruding cavity of extruder when the work because mechanical friction easily produces a large amount of heats, by cooling water pipeline 13 coolant seal cavity shells 1, guarantee the normal operating temperature of extruding cavity, improve the service life of extruding cavity.
embodiment 7:the comparative example of actual product
Under the condition of same recipe, same process, technological parameter:
Screw speed: 45 Hz;
I district temperature: 80 ℃;
II district temperature: 100 ℃;
Feeding speed: 30 Hz;
Sieve number: 160 orders;
Pulverizer main frame: 48 Hz;
Classification rotating speed: 27 Hz;
Pulverize feeding speed: 26 Hz;
Adopt the extruding cavity of existing single screw extrusion machine and the extruding cavity of single screw extrusion machine of the present invention to carry out contrast test, the contrast to properties of product before and after the improvement obtaining: (as shown in the table)
| the contents of a project | prior art | the present invention |
| gloss | 75-80% | 80-88% |
| outward appearance | naked eyes range estimation: have pin hole and little shrinkage cavity | naked eyes range estimation: surfacing, free of pinholes and little shrinkage cavity. |
| impact resistance | 30Kg.cm2 | 50Kg.cm2 |
By upper table, can be drawn, the density due to product of the powdery paints of producing by the extruding cavity of single screw extrusion machine of the present invention is higher, compactness is better, therefore outward appearance and glossiness are all greater than the powdery paints of prior art, higher density has improved the impact resistance of product greatly simultaneously, overall performance and the range of application of powdery paints have greatly been improved, simultaneously the present invention adopts discontinuous to extrude screw thread to facilitate discharging, the extensive consecutive production that facilitates enterprise, has improved the economic benefit of enterprise.
In addition to the implementation, the present invention can also have other embodiments.All employings are equal to the technical scheme of replacement or equivalent transformation formation, all drop on the protection domain of requirement of the present invention.
Claims (9)
1. single Screw Extrusion chamber that melting effect is high, described extruding cavity is inner adopts single screw thread to extrude bar, described screw thread is extruded on the transmission device that bar is connected to extruding cavity side, it is characterized in that, described extruding cavity comprises that screw thread extrudes bar, annular seal space housing, cooling chamber housing, extrusion shrouding and draw material baffle plate, described annular seal space housing by two rectangular housing by the airtight airtight integral body being combined into of rotating shaft of bottom, in described annular seal space housing, be provided with columniform annular seal space, the both sides of described annular seal space housing are provided with cooling chamber housing, the port of export of described annular seal space housing is provided with extrusion shrouding, the extrusion diameter of described extrusion shrouding is 1.1-1.3cm, the below of described extrusion shrouding is provided with draws material baffle plate.
2. single Screw Extrusion chamber that melting effect according to claim 1 is high, it is characterized in that, described screw thread is extruded bar and is extruded screw thread for being provided with two sections, be respectively that discontinuous is extruded screw thread and continous way is extruded screw thread, described continous way is extruded screw thread and is arranged on the driving end that screw thread is extruded bar, and described discontinuous is extruded screw thread and is arranged on the extrusion end that screw thread is extruded bar.
3. single Screw Extrusion chamber that melting effect according to claim 2 is good, is characterized in that, the screw thread disconnection spacing that described discontinuous is extruded screw thread is 1.3-1.5cm.
4. single Screw Extrusion chamber that melting effect according to claim 1 is good, it is characterized in that, described extrusion shrouding is sleeved on the annular seal space housing port of export by nut structure, the inner side of the cylindrical extrusion on described extrusion shrouding be provided with taper draw material mouthful.
5. single Screw Extrusion chamber that melting effect according to claim 4 is good, is characterized in that, the diameter of osculum end that material mouth is drawn in described taper is identical with the diameter of extrusion, and the diameter of big opening end is less than annular seal space internal diameter 0.8-1.0cm.
6. single Screw Extrusion chamber that melting effect according to claim 1 is good, is characterized in that, the inner side of described annular seal space housing is provided with four groups of pin feature, and the installation angle of two groups of adjacent pin feature is 90 °.
7. single Screw Extrusion chamber that melting effect according to claim 6 is good, is characterized in that, described single group pin feature comprises three pins, and the spacing between two adjacent pins is identical with the distance of pin and annular seal space two ends housing.
8. single Screw Extrusion chamber that melting effect according to claim 1 is good, is characterized in that, the top of two described rectangular housing is distributed with two handles structures.
9. single Screw Extrusion chamber that melting effect according to claim 1 is good, is characterized in that, is provided with many group cooling water pipelines in described cooling chamber housing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410179362.1A CN103978660B (en) | 2014-04-30 | 2014-04-30 | The Single screw extrusion chamber that melting effect is good |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410179362.1A CN103978660B (en) | 2014-04-30 | 2014-04-30 | The Single screw extrusion chamber that melting effect is good |
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| Publication Number | Publication Date |
|---|---|
| CN103978660A true CN103978660A (en) | 2014-08-13 |
| CN103978660B CN103978660B (en) | 2016-08-17 |
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| CN201410179362.1A Active CN103978660B (en) | 2014-04-30 | 2014-04-30 | The Single screw extrusion chamber that melting effect is good |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106425496A (en) * | 2016-10-26 | 2017-02-22 | 浙江博海机械有限公司 | Multifunctional machine barrel machining equipment |
| CN107428104A (en) * | 2014-12-30 | 2017-12-01 | 奥特克莱夫高压高温有限公司 | Device (deformation program) for material deformation processing |
| CN110300650A (en) * | 2016-12-21 | 2019-10-01 | 巴斯夫欧洲公司 | The purposes of single axle extruding machine and single axle extruding machine, and the method for the form using single axle extruding machine change super water absorption polymer gel |
| TWI756469B (en) * | 2017-09-29 | 2022-03-01 | 德商馬格德國有限公司 | Cutting chamber housing for underwater granulator |
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| KR20110034995A (en) * | 2009-09-29 | 2011-04-06 | 엘에스전선 주식회사 | Extruding screw |
| CN103231461A (en) * | 2013-04-27 | 2013-08-07 | 济南永胜化工有限公司 | Method for producing polyacrylamide colloidal particle |
| CN203831764U (en) * | 2014-04-30 | 2014-09-17 | 张家港江南粉末涂料有限公司 | Single screw extrusion cavity good in mixing effect |
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| JPH0985739A (en) * | 1995-09-22 | 1997-03-31 | Sumitomo Bakelite Co Ltd | Kneading machine |
| CN2761401Y (en) * | 2005-01-01 | 2006-03-01 | 杭州中法化学有限公司 | Tetra screw sheets reciprocating type pin screw extruder |
| KR20110034995A (en) * | 2009-09-29 | 2011-04-06 | 엘에스전선 주식회사 | Extruding screw |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107428104A (en) * | 2014-12-30 | 2017-12-01 | 奥特克莱夫高压高温有限公司 | Device (deformation program) for material deformation processing |
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| US10821645B2 (en) | 2014-12-30 | 2020-11-03 | Obshchestvo s ogranichennoy otvetstvennostyu “Avtoklavy vysokogo davleniya i temperatury” | Device for deformational processing of materials (variants) |
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| CN110300650A (en) * | 2016-12-21 | 2019-10-01 | 巴斯夫欧洲公司 | The purposes of single axle extruding machine and single axle extruding machine, and the method for the form using single axle extruding machine change super water absorption polymer gel |
| TWI756469B (en) * | 2017-09-29 | 2022-03-01 | 德商馬格德國有限公司 | Cutting chamber housing for underwater granulator |
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| Publication number | Publication date |
|---|---|
| CN103978660B (en) | 2016-08-17 |
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Address after: No. 82, Huada Road, Jiangsu Yangzi River International Chemical Industrial Park, Jiangsu, Suzhou, Jiangsu Patentee after: Jiangnan powder coating (Zhangjiagang) Co., Ltd. Address before: No. 82, Huada Road, Jiangsu Yangzi River International Chemical Industrial Park, Jiangsu, Suzhou, Jiangsu Patentee before: Zhangjiagang Jiangnan Powder Coating Co., Ltd. |
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