CN111152395A - Multi-roller continuous plastic sheet calender - Google Patents
Multi-roller continuous plastic sheet calender Download PDFInfo
- Publication number
- CN111152395A CN111152395A CN202010125234.4A CN202010125234A CN111152395A CN 111152395 A CN111152395 A CN 111152395A CN 202010125234 A CN202010125234 A CN 202010125234A CN 111152395 A CN111152395 A CN 111152395A
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- Prior art keywords
- roller
- rollers
- conveying roller
- plastic sheet
- continuous plastic
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- 239000002985 plastic film Substances 0.000 title claims abstract description 38
- 238000001816 cooling Methods 0.000 claims description 19
- 239000003638 chemical reducing agent Substances 0.000 claims description 9
- 230000005540 biological transmission Effects 0.000 claims description 7
- 230000014759 maintenance of location Effects 0.000 claims description 5
- 230000000712 assembly Effects 0.000 claims description 4
- 238000000429 assembly Methods 0.000 claims description 4
- 230000008878 coupling Effects 0.000 claims description 4
- 238000010168 coupling process Methods 0.000 claims description 4
- 238000005859 coupling reaction Methods 0.000 claims description 4
- 238000009434 installation Methods 0.000 claims description 2
- 238000004519 manufacturing process Methods 0.000 abstract description 7
- 238000000034 method Methods 0.000 description 4
- 230000008569 process Effects 0.000 description 4
- 239000002994 raw material Substances 0.000 description 4
- 238000001125 extrusion Methods 0.000 description 3
- 230000009471 action Effects 0.000 description 2
- 239000000498 cooling water Substances 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Images
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
- B29C43/00—Compression moulding, i.e. applying external pressure to flow the moulding material; Apparatus therefor
- B29C43/22—Compression moulding, i.e. applying external pressure to flow the moulding material; Apparatus therefor of articles of indefinite length
- B29C43/24—Calendering
-
- 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
- B29C43/00—Compression moulding, i.e. applying external pressure to flow the moulding material; Apparatus therefor
- B29C43/32—Component parts, details or accessories; Auxiliary operations
- B29C43/44—Compression means for making articles of indefinite length
- B29C43/46—Rollers
-
- 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
- B29C43/00—Compression moulding, i.e. applying external pressure to flow the moulding material; Apparatus therefor
- B29C43/32—Component parts, details or accessories; Auxiliary operations
- B29C43/52—Heating or cooling
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
- B29L2007/00—Flat articles, e.g. films or sheets
- B29L2007/002—Panels; Plates; Sheets
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Casting Or Compression Moulding Of Plastics Or The Like (AREA)
Abstract
The invention relates to a multi-roller continuous plastic sheet calender, which comprises a rack wall and a roller assembly, wherein the roller assembly comprises an inclined conveying roller and a horizontal conveying roller, the inclined conveying roller is arranged on an inclined plane at the feeding end of the rack wall, the inclined conveying roller is at least provided with two rollers, the horizontal conveying roller is horizontally arranged at the top of the rack wall, the horizontal conveying roller is at least provided with three rollers, a roller gap adjusting device is arranged between each two rollers, and an electric walking device is arranged at the bottom of the rack wall. The invention is continuous multi-roller arrangement, increases the number of rollers, effectively increases the contact area between the rollers and the sheets, prolongs the contact time between the rollers and the sheets, enables the sheets to be better cooled and formed, simultaneously reduces the internal stress of the sheets, improves the surface quality of the sheets, and is suitable for high-yield production of plastic sheets.
Description
Technical Field
The invention relates to the technical field of plastic processing, in particular to a calender for multi-roll continuous plastic sheet extrusion molding.
Background
At present, most of the calender machines for extrusion molding of domestic plastic sheets are three-roller calender machines, the raw materials used for production mainly comprise PET, PP, PVC and the like, and the sheet production line adopts the following processes: extruding the raw materials from a die after extrusion, plasticizing and melting by an extruder, extruding by a three-roller calender, and cooling and molding.
However, the demand for high yield in the market is more and more increased, but the temperature of the sheet is difficult to be reduced by the common three-roller calender after the high yield is achieved, so that the cooling capacity of the common three-roller sheet calender is insufficient during production, and the quality of the sheet is easily affected due to uneven heating of the upper surface and the lower surface of the sheet. The calender must increase the contact area of the sheet and the roller to achieve sufficient cooling effect, and prolong the contact time of the sheet and the roller, and the solution is to increase the diameter of the roller and the length of the roller, but the increase of the diameter and the length of the roller can reduce the quality of the plastic sheet product, and is inconvenient for the operation of the machine.
Disclosure of Invention
The invention aims to provide a multi-roller continuous plastic sheet calender, which improves the cooling performance of a roller, reduces the internal stress of sheets, improves the surface quality of the sheets and improves the yield so as to solve the problems in the background technology.
In order to achieve the purpose, the technical scheme of the invention is as follows:
a multi-roller continuous plastic sheet calender comprises frame walls and roller assemblies, wherein the roller assemblies are arranged on the top sides of the two frame walls, the roller assembly comprises an inclined conveying roller and a horizontal conveying roller, the inclined conveying roller is arranged on the inclined surface of the feeding end of the frame wall body, the inclined conveying roller is at least provided with two rollers, the horizontal conveying roller is horizontally arranged at the top of the wall body of the rack, the horizontal conveying roller is at least provided with three rollers, roller gap adjusting devices are respectively arranged between the inclined conveying roller and the adjacent roller of the horizontal conveying roller, between the rollers of the inclined conveying roller and between the rollers of the horizontal conveying roller, electric walking devices are arranged at the bottoms of the two frame wall bodies, the electric walking device is in transmission connection with the rollers at four corners at the bottom of the two frame wall bodies through universal couplings.
In the scheme, the diameters of the rollers in the inclined conveying rollers are the same, the diameters of the rollers in the horizontal conveying rollers are the same, and the diameters of the rollers in the inclined conveying rollers are larger than those of the rollers in the horizontal conveying rollers.
In the scheme, the diameter of the roller in the inclined conveying roller is 1.2-1.5 times that of the roller in the horizontal conveying roller.
In the scheme, each roller in the inclined conveying roller and each roller in the horizontal conveying roller are thin-wall rollers with the wall thickness of 10-15 mm.
In the scheme, the roller gap adjusting device is arranged on the bearing seats at two sides of the rollers, and the distance between two adjacent rollers is adjusted by the roller gap adjusting device through the lead screw.
In the scheme, the oil cylinders are mounted at the bottoms of the bearing seats of the rollers of the horizontal conveying roller and are connected end to end.
In the scheme, the driving device of the roller assembly is a servo motor and a speed reducer, and the servo motor and the speed reducer are respectively in transmission connection with the rollers through couplers.
In the scheme, the discharge end at the top of the frame wall body is provided with a retention area.
In the scheme, the end part of the retention area is provided with at least one auxiliary cooling roller.
In the scheme, the auxiliary cooling roller is vertically arranged at the top of the frame wall.
Compared with the prior art, the invention has the beneficial effects that: compared with the traditional three-roller calender, the invention adopts continuous multi-roller arrangement, increases the number of rollers, effectively increases the contact area between the rollers and the sheets, prolongs the contact time between the rollers and the sheets, and enables the sheets to be cooled and molded better. The upper surface and the lower surface of the plastic sheet are heated uniformly by changing the cooling surface of the sheet for many times in a short time, so that the internal stress of the sheet is reduced, and the surface quality of the plastic sheet is improved. Therefore, the multi-roller continuous plastic sheet calender improves the cooling performance of each roller and reduces the internal stress of the plastic sheet while improving the yield, thereby improving the surface quality of the sheet.
Drawings
FIG. 1 is a schematic view of the overall structure of the present invention;
FIG. 2 is a schematic side view of the present invention;
FIG. 3 is a schematic top view of the present invention.
Reference numbers in the figures: 1-a frame wall; 11-a retention zone; 2-a first roller; 21-a first oil cylinder; 3-a second roller; 31-a servo motor; 32-a speed reducer; 33-a cooling water pipe; 4-a third roller; 41-a second oil cylinder; 5-a fourth roller; 51-a third oil cylinder; 6-a fifth roller; 61-a fourth cylinder; 7-roll gap adjusting means; 8-auxiliary cooling roller; 9-electric walking device.
Detailed Description
The technical solution of the present invention is further described in detail with reference to the accompanying drawings and examples.
As shown in fig. 1 to 3, a multi-roll continuous plastic sheet calender comprises frame walls 1 and a roll assembly, wherein the roll assembly is arranged on the top sides of the two frame walls 1, and the existing three-roll calender is also in the assembly mode. The driving device of the roller assembly is a servo motor 31 and a speed reducer 32, the servo motor 31 is electrically connected with an external power supply, the servo motor 31 is in transmission connection with the speed reducer 32, and the servo motor 31 and the speed reducer 32 are in transmission connection with the rollers through couplers respectively, so that the rotating speed of the rollers is controlled more accurately. The cooling water pipe 33 is arranged on the other side, opposite to the driving device, of the roller assembly, so that each roller can independently control the temperature, and the temperature of each roller can be adjusted according to the water temperature of inlet and outlet water, so that the requirements of different raw materials, different yields and different thicknesses during sheet production are met.
The roller assembly comprises an inclined conveying roller and a horizontal conveying roller, the inclined conveying roller is installed on the inclined plane of the feeding end of the frame wall body 1, and the inclined conveying roller is at least provided with two rollers. As can be seen from fig. 1, the inclined plane conveying roller at least comprises a first roller 2 and a second roller 3, the first roller 2 and the second roller 3 are both installed on the inclined plane of the feeding end of the rack wall 1, the first roller 2 and the second roller 3 are inclined planes at the inclined plane of the feeding end of the rack wall 1, and a manufacturer adjusts the inclination of the inclined planes according to requirements. The bearing blocks on two sides of the first roller 2 are provided with first oil cylinders 21 for adjusting the height of the first roller 2 from a plastic sheet feeding die orifice, and the first roller 2 and the second roller 3 can be loosened and clamped by the action of the first oil cylinders 21 so as to adapt to plastic sheets with different thicknesses.
Horizontal conveying roller horizontal installation is at the top of frame wall body 1, and horizontal conveying roller is equipped with three roller at least. As can be seen from fig. 1, the horizontal conveying roller at least comprises a third roller 4, a fourth roller 5 and a fifth roller 6, and the third roller 4, the fourth roller 5 and the fifth roller 6 are horizontally installed on the top of the rack wall 1 and are in a straight line on the top of the rack wall 1. The bottom of a bearing seat of each roller of the horizontal conveying roller is provided with an oil cylinder, correspondingly, the bottom of a bearing seat of the third roller 4 is provided with a second oil cylinder 41, the bottom of a bearing seat of the fourth roller 5 is provided with a third oil cylinder 51, the bottom of a bearing seat of the fifth roller 6 is provided with a fourth oil cylinder 61, the oil cylinders are connected end to end, and the two adjacent rollers can be loosened and clamped by the action of the oil cylinders, so that the horizontal conveying roller is suitable for plastic sheets with different thicknesses.
The roller gap adjusting device 7 is arranged between the oblique conveying roller and the adjacent roller of the horizontal conveying roller, between the rollers of the oblique conveying roller and between the rollers of the horizontal conveying roller, and the gap between every two rollers can be adjusted according to the thickness of different produced sheets. The roller gap adjusting device 7 is arranged on bearing seats at two sides of the roller, and the roller gap adjusting device 7 adjusts the distance between two adjacent rollers through a lead screw. The roller gap adjusting device 7 adopts purchased parts, and the distance between two adjacent rollers is adjusted through a lead screw, so that the roller gap adjusting device is suitable for different plastic sheet requirements.
The diameters of the rollers in the inclined conveying roller are the same, the diameters of the rollers in the horizontal conveying roller are the same, and the diameters of the rollers in the inclined conveying roller are larger than those of the rollers in the horizontal conveying roller. As a preferable scheme, the diameter of the roller in the inclined conveying roller is 1.2-1.5 times of that of the roller in the horizontal conveying roller.
As a preferred scheme, each roller in the inclined conveying roller and each roller in the horizontal conveying roller are thin-walled rollers with the wall thickness of 10-15 mm. The thin-wall roller is adopted in the invention, the heat-conducting property of the roller is effectively increased, and the plastic sheet can take away heat more quickly when contacting with the roller.
The electric walking devices 9 are installed at the bottoms of the two frame wall bodies 1, and the electric walking devices 9 are matched with the speed reducing motor and are in transmission connection with the rollers at four corners at the bottom of the two frame wall bodies 1 through universal couplings. The electric walking device 9 drives the rollers at four corners of the calender to rotate through the universal coupling for the speed reducer so as to realize the back and forth movement of the calender, and can adjust the level of the discharging die orifice in the first roller 2 of the calender and the previous process by adjusting the height of the roller base, thereby facilitating the contact with plastic sheet materials.
A reserving area 11 is arranged at the discharge end of the top of the frame wall body 1, and the reserving area 11 is used for additionally installing another roller according to the production cooling requirement. The end of the reserving area 11 is provided with at least one auxiliary cooling roller 8, and when a plurality of auxiliary cooling rollers 8 are arranged, the auxiliary cooling rollers 8 are vertically arranged on the top of the rack wall 1.
The working process is as follows: according to the invention, the plastic sheet raw material enters the calender after being extruded from a die, is extruded, cooled and molded by the first roller 2 and the second roller 3, then passes through the third roller 4, the fourth roller 5 and the fifth roller 6 to be continuously extruded and cooled, and then is sent to the next equipment of the production line. After being extruded and conveyed out of the fifth roller 6, the plastic sheet can pass through an auxiliary cooling roller 8 arranged at the end part of the reserving area 11 as required to continue to be extruded and cooled, so that the internal stress of the product and the temperature of the surface of the plastic sheet are removed, and the product meets the process quality requirement of the product.
Compared with the traditional three-roller calender, the invention adopts continuous multi-roller arrangement, increases the number of rollers, effectively increases the contact area between the rollers and the sheets, prolongs the contact time between the rollers and the sheets, and enables the sheets to be cooled and molded better. The upper surface and the lower surface of the plastic sheet are heated uniformly by changing the cooling surface of the sheet for many times in a short time, so that the internal stress of the sheet is reduced, and the surface quality of the plastic sheet is improved.
Therefore, the multi-roller continuous plastic sheet calender improves the cooling performance of each roller and reduces the internal stress of the plastic sheet while improving the yield, thereby improving the surface quality of the sheet.
The above-mentioned embodiments, objects, technical solutions and advantages of the present invention are further described in detail, it should be understood that the above-mentioned embodiments are only specific embodiments of the present invention, and are not intended to limit the scope of the present invention, and any modifications, equivalent substitutions, improvements and the like made within the spirit and principle of the present invention should be included in the scope of the present invention.
Claims (10)
1. The multi-roller continuous plastic sheet calender comprises frame walls (1) and roller assemblies, wherein the roller assemblies are arranged on the top sides of the two frame walls (1), and the multi-roller continuous plastic sheet calender is characterized in that: the roller subassembly includes inclined plane conveying roller and horizontal conveying roller, the inclined plane conveying roller is installed on the feed end inclined plane of frame wall body (1), the inclined plane conveying roller is equipped with two rollers at least, horizontal conveying roller horizontal installation be in the top of frame wall body (1), horizontal conveying roller is equipped with three roller at least, between inclined plane conveying roller and the adjacent roller of horizontal conveying roller between each roller of inclined plane conveying roller all install roller clearance adjustment device (7), two between each roller of horizontal conveying roller electric running gear (9) are installed to the bottom of frame wall body (1), electric running gear (9) are through universal coupling and two the roller transmission at four angles in frame wall body (1) bottom is connected.
2. A multi-roll continuous plastic sheet calender according to claim 1, characterised in that: the diameters of the rollers in the inclined conveying rollers are the same, the diameters of the rollers in the horizontal conveying rollers are the same, and the diameters of the rollers in the inclined conveying rollers are larger than those of the rollers in the horizontal conveying rollers.
3. A multi-roll continuous plastic sheet calender according to claim 2, characterised in that: the diameter of the roller in the inclined conveying roller is 1.2-1.5 times of that of the roller in the horizontal conveying roller.
4. A multi-roll continuous plastic sheet calender according to claim 2, characterised in that: and each roller in the inclined conveying roller and each roller in the horizontal conveying roller are thin-walled rollers with the wall thickness of 10-15 mm.
5. A multi-roll continuous plastic sheet calender according to claim 1, characterised in that: the roller gap adjusting device (7) is installed on bearing seats on two sides of the rollers, and the roller gap adjusting device (7) adjusts the distance between two adjacent rollers through a lead screw.
6. A multi-roll continuous plastic sheet calender according to claim 1, characterised in that: and oil cylinders are arranged at the bottoms of the bearing seats of the rollers of the horizontal conveying roller and are connected end to end.
7. A multi-roll continuous plastic sheet calender according to claim 1, characterised in that: the driving device of the roller assembly comprises a servo motor (31) and a speed reducer (32), and the servo motor (31) and the speed reducer (32) are in transmission connection with the rollers through couplers respectively.
8. A multi-roll continuous plastic sheet calender according to claim 1, characterised in that: and a retention area (11) is arranged at the discharge end at the top of the frame wall body (1).
9. A multi-roll continuous plastic sheet calender according to claim 8, characterised in that: and the end part of the retention area (11) is provided with an auxiliary cooling roller (8), and at least one auxiliary cooling roller (8) is arranged.
10. A multi-roll continuous plastic sheet calender according to claim 9, characterised in that: the auxiliary cooling roller (8) is vertically arranged at the top of the frame wall body (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010125234.4A CN111152395A (en) | 2020-02-27 | 2020-02-27 | Multi-roller continuous plastic sheet calender |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010125234.4A CN111152395A (en) | 2020-02-27 | 2020-02-27 | Multi-roller continuous plastic sheet calender |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111152395A true CN111152395A (en) | 2020-05-15 |
Family
ID=70566645
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010125234.4A Pending CN111152395A (en) | 2020-02-27 | 2020-02-27 | Multi-roller continuous plastic sheet calender |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN111152395A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112848015A (en) * | 2020-12-31 | 2021-05-28 | 江苏恒隆通新材料科技有限公司 | A four-roller plating press for production of light diffuser plate |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2381465Y (en) * | 1999-07-23 | 2000-06-07 | 江苏维达机械有限公司 | Three roller press for plastic calender train |
| US6575726B1 (en) * | 2000-09-06 | 2003-06-10 | Welex Incorporated | Apparatus for cooling an extruded plastic sheet |
| CN102452170A (en) * | 2010-10-22 | 2012-05-16 | 张家港市贝尔机械有限公司 | Wedge-type gap adjustment mechanism of plastic sheet calender |
| CN103347678A (en) * | 2011-02-03 | 2013-10-09 | 巴顿菲尔-辛辛那提德国有限公司 | Cooling device and cooling method for extrudate |
| CN206124059U (en) * | 2016-06-27 | 2017-04-26 | 大连华韩橡塑机械有限公司 | Five -roller calendar |
| US20170182685A1 (en) * | 2015-12-28 | 2017-06-29 | Graham Engineering Corporation | Multi-nip takeoff |
| CN207044734U (en) * | 2017-06-21 | 2018-02-27 | 无锡康浩塑料机械有限公司 | A kind of six roller plastic plates, sheet production line |
| CN209738280U (en) * | 2019-03-04 | 2019-12-06 | 南京赛旺科技发展有限公司 | Five-roller calender for PVC floor production |
| CN211868408U (en) * | 2020-02-27 | 2020-11-06 | 南京光瑞挤出装备有限公司 | Multi-roller continuous plastic sheet calender |
-
2020
- 2020-02-27 CN CN202010125234.4A patent/CN111152395A/en active Pending
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2381465Y (en) * | 1999-07-23 | 2000-06-07 | 江苏维达机械有限公司 | Three roller press for plastic calender train |
| US6575726B1 (en) * | 2000-09-06 | 2003-06-10 | Welex Incorporated | Apparatus for cooling an extruded plastic sheet |
| CN102452170A (en) * | 2010-10-22 | 2012-05-16 | 张家港市贝尔机械有限公司 | Wedge-type gap adjustment mechanism of plastic sheet calender |
| CN103347678A (en) * | 2011-02-03 | 2013-10-09 | 巴顿菲尔-辛辛那提德国有限公司 | Cooling device and cooling method for extrudate |
| US20170182685A1 (en) * | 2015-12-28 | 2017-06-29 | Graham Engineering Corporation | Multi-nip takeoff |
| CN206124059U (en) * | 2016-06-27 | 2017-04-26 | 大连华韩橡塑机械有限公司 | Five -roller calendar |
| CN207044734U (en) * | 2017-06-21 | 2018-02-27 | 无锡康浩塑料机械有限公司 | A kind of six roller plastic plates, sheet production line |
| CN209738280U (en) * | 2019-03-04 | 2019-12-06 | 南京赛旺科技发展有限公司 | Five-roller calender for PVC floor production |
| CN211868408U (en) * | 2020-02-27 | 2020-11-06 | 南京光瑞挤出装备有限公司 | Multi-roller continuous plastic sheet calender |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112848015A (en) * | 2020-12-31 | 2021-05-28 | 江苏恒隆通新材料科技有限公司 | A four-roller plating press for production of light diffuser plate |
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