CN210552477U - Cooling device is used in waterproofing membrane production - Google Patents
Cooling device is used in waterproofing membrane production Download PDFInfo
- Publication number
- CN210552477U CN210552477U CN201920991492.3U CN201920991492U CN210552477U CN 210552477 U CN210552477 U CN 210552477U CN 201920991492 U CN201920991492 U CN 201920991492U CN 210552477 U CN210552477 U CN 210552477U
- Authority
- CN
- China
- Prior art keywords
- cooling
- cooling box
- water
- waterproofing membrane
- cooling device
- 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.)
- Expired - Fee Related
Links
- 238000001816 cooling Methods 0.000 title claims abstract description 114
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 14
- 239000012528 membrane Substances 0.000 title abstract description 23
- 238000004078 waterproofing Methods 0.000 title abstract description 23
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 51
- 239000000463 material Substances 0.000 claims abstract description 32
- 238000003466 welding Methods 0.000 claims abstract description 16
- 238000005507 spraying Methods 0.000 claims abstract description 12
- 238000007599 discharging Methods 0.000 claims abstract description 6
- 239000007921 spray Substances 0.000 claims description 11
- 238000002347 injection Methods 0.000 claims description 3
- 239000007924 injection Substances 0.000 claims description 3
- 239000008399 tap water Substances 0.000 claims description 3
- 235000020679 tap water Nutrition 0.000 claims description 3
- 238000009825 accumulation Methods 0.000 claims 3
- 238000009434 installation Methods 0.000 claims 1
- 239000000779 smoke Substances 0.000 abstract description 14
- 230000000694 effects Effects 0.000 abstract description 12
- 230000002349 favourable effect Effects 0.000 abstract description 5
- 230000000712 assembly Effects 0.000 abstract 2
- 238000000429 assembly Methods 0.000 abstract 2
- 239000003595 mist Substances 0.000 description 7
- 238000000034 method Methods 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- 230000009471 action Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 2
- 238000000265 homogenisation Methods 0.000 description 2
- 230000003993 interaction Effects 0.000 description 2
- 239000010426 asphalt Substances 0.000 description 1
- 239000004566 building material Substances 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 229920000642 polymer Polymers 0.000 description 1
Images
Landscapes
- Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)
Abstract
The utility model discloses a cooling device for producing waterproof coiled materials, which comprises a base, a cooling box, a feeding roller and a discharging roller, wherein the cooling box is fixed on the base in a bolt fixing or welding mode, the upper end and the lower end of the cooling box are respectively provided with an upper air cooling assembly and a lower air cooling assembly, the inner walls at the two sides of the cooling box are provided with spraying assemblies, and the spraying assemblies are positioned below the upper air cooling assembly and above the lower air cooling assembly; the utility model relates to a cooling device is used in waterproofing membrane production, produce water smoke through atomizing humidifier, water smoke is spout from the shower nozzle, under the air current effect that upper and lower air-cooled subassembly produced, carry water smoke and spout waterproofing membrane's surface, water smoke both can contact with waterproofing membrane, play water-cooled effect, air-cooled subassembly and spraying subassembly combine together, make waterproofing membrane can carry out forced air cooling and water-cooling simultaneously, thereby be favorable to improving waterproofing membrane's cooling efficiency, the heat in the cooler bin can also be taken away to water smoke simultaneously, be favorable to improving waterproofing membrane's cooling effect.
Description
Technical Field
The utility model relates to a waterproofing membrane production facility field, in particular to cooling device is used in waterproofing membrane production.
Background
Asphalt waterproof materials or polymer waterproof materials are soaked on a tire body, and the manufactured waterproof material product is provided in a roll form and is called a waterproof roll. The waterproof coiled material is a flexible building material product which can be curled into a roll shape and has the function of resisting external rainwater and underground water leakage, and is commonly used for building walls, roofs, tunnels, highways, refuse landfills and the like.
In the production process of the waterproof roll, the roll is usually cooled before being rolled. The waterproof coiled material cooling in the prior art mainly adopts two modes of wind cooling and water cooling, but the existing waterproof coiled material cooling device is generally a single cooling mode and has low cooling efficiency.
SUMMERY OF THE UTILITY MODEL
The utility model discloses a main aim at provides a cooling device is used in waterproofing membrane production can effectively solve the problem in the background art.
In order to achieve the above object, the utility model provides a following technical scheme: the utility model provides a cooling device is used in waterproofing membrane production, includes base, cooler bin, feed roll and discharge roller, be fixed with the cooler bin through bolt fastening or welded mode on the base, the feed roll is installed to the feed inlet one end of cooler bin, the discharge roller is installed to the discharge gate one end of cooler bin, both ends are provided with air-cooled subassembly and lower air-cooled subassembly respectively about the cooler bin, be provided with the spraying subassembly on the both sides inner wall of cooler bin, the spraying subassembly is located the below of air-cooled subassembly and the top of lower air-cooled subassembly.
Preferably, the upper air cooling assembly comprises a first fan and an upper air deflector, the first fan is installed on the inner wall of the top of the cooling box, the upper air deflector is located below the first fan, the periphery of the upper air deflector is fixedly connected with the inner wall of the cooling box in a bolt fixing or welding mode, and a plurality of upper air guide holes are uniformly distributed in the upper air deflector.
Preferably, the lower air cooling assembly comprises a supporting plate, a mounting plate, a second fan and a lower air guide plate, the supporting plate is fixed to the bottom of the cooling box in a bolt fixing or welding mode, the mounting plate, the second fan and the lower air guide plate are sequentially arranged above the supporting plate, the periphery of the mounting plate is fixed to the supporting plate in a bolt fixing or welding mode, the second fan is mounted on the mounting plate, the periphery of the lower air guide plate is fixed to the top of the supporting plate in a bolt fixing or welding mode, and a plurality of lower air guide holes are uniformly distributed in the lower air guide plate.
Preferably, a water accumulating tank for collecting accumulated water is formed between the supporting plate and the inner wall of the cooling box, and the water accumulating tank is connected with a water accumulating discharge pipe.
Preferably, the spraying assembly comprises an atomizing humidifier and a spray head, the atomizing humidifier is fixed on the outer wall of the cooling box through bolts, a water injection port of the atomizing humidifier is connected with a tap water pipe through a water supply pipe, an output end of the atomizing humidifier is connected with a header pipe, and the header pipe is connected with the spray head through a hose.
Preferably, the shower nozzle one end is through screw fixation or welded mode fixedly connected with thread block, thread block screw thread suit is on the lead screw, the both sides at the cooling tank are installed through the bearing in the lead screw both ends, the one end of lead screw is passed through the shaft coupling and is set up the motor fixed connection on the cooling tank outer wall.
Preferably, the inside one end that is close to the discharge roller of cooler bin is provided with two sponge rollers from top to bottom, the roller at sponge roller both ends passes through the bearing and rotates and install on the inner wall of cooler bin, waterproofing membrane's surface is hugged closely to the sponge roller.
Compared with the prior art, the utility model discloses following beneficial effect has:
1) the cooling device for producing the waterproof coiled material generates water mist through the atomizing humidifier, the water mist is sprayed out from the spray head and is carried to be sprayed to the surface of the waterproof coiled material under the action of air flow generated by the upper air cooling assembly and the lower air cooling assembly, the water mist can be contacted with the waterproof coiled material to play a role of water cooling, heat in the cooling box can be taken away, and therefore the cooling effect of waterproof coiled material is improved; the cooling device utilizes the air cooling assembly and the spraying assembly to realize the mutually combined cooling of water cooling and air cooling, so that the waterproof coiled material can be simultaneously subjected to air cooling and water cooling, and the cooling efficiency of the waterproof coiled material is favorably improved.
2) Through installing the shower nozzle on the lead screw, utilize the lead screw to drive the reciprocating motion of shower nozzle round trip to be favorable to the water smoke evenly to blow to waterproofing membrane surface.
3) The upper surface and the lower surface of the waterproof roll are subjected to air cooling through the interaction of the upper air cooling assembly and the lower air cooling assembly, so that the cooling efficiency is improved; meanwhile, due to the arrangement of the upper air deflector and the lower air deflector, when air flow generated by the fan flows through the upper air deflector and the lower air deflector, the effect of air homogenization can be achieved, and the air flow blown to the surface of the waterproof roll is more uniform.
4) The water accumulating tank can collect the accumulated water dropping in the cooling process of the waterproof coiled material and discharge the accumulated water to the outside of the cooling box.
5) Through the arrangement of the sponge roller, water drops on the surface of the waterproof roll can be adsorbed, so that the moisture on the surface of the waterproof roll can be removed.
Drawings
FIG. 1 is a front view of a cooling device for producing a waterproof roll according to the present invention;
FIG. 2 is a sectional view of a cooling device for producing a waterproof roll according to the present invention;
3 fig. 3 3 3 is 3 a 3 schematic 3 cross 3- 3 sectional 3 view 3 of 3 a 3 cooling 3 device 3 for 3 producing 3 a 3 waterproof 3 roll 3 along 3 a 3 direction 3 of 3 a 3- 3 a 3. 3
In the figure: 1. a base; 2. a cooling tank; 3. an atomizing humidifier; 4. a water supply pipe; 5. a header pipe; 6. a feed roll; 7. a discharging roller; 8. a sponge roller; 9. a first fan; 10. an upper air deflector; 11. an upper air guide hole; 12. a spray head; 13. a support plate; 14. mounting a plate; 15. a second fan; 16. a lower air deflector; 17. a lower air guide hole; 18. a screw rod; 19. a thread block; 20. an electric motor.
Detailed Description
In order to make the technical means, creation features, achievement purposes and functions of the present invention easy to understand, the present invention is further described below with reference to the following embodiments.
Referring to fig. 1-2, a cooling device is used in waterproofing membrane production, including base 1, cooler bin 2, feed roller 6 and discharge roller 7, be fixed with cooler bin 2 through bolt fastening or welded mode on the base 1, feed roller 6 is installed to the feed inlet one end of cooler bin 2, discharge roller 7 is installed to the discharge gate one end of cooler bin 2, both ends are provided with air-cooled subassembly and air-cooled subassembly down respectively about cooler bin 2, be provided with the spraying subassembly on the both sides inner wall of cooler bin 2, the spraying subassembly is located the below of air-cooled subassembly and the top of air-cooled subassembly down.
Through adopting above-mentioned technical scheme, combine together through air-cooled subassembly and spraying subassembly for waterproofing membrane can carry out forced air cooling and water-cooling simultaneously, thereby is favorable to improving waterproofing membrane's cooling efficiency.
Referring to fig. 2, the upper air cooling assembly includes a first fan 9 and an upper air guiding plate 10, the first fan 9 is installed on the inner wall of the top of the cooling box 2, the upper air guiding plate 10 is located below the first fan 9, the periphery of the upper air guiding plate 10 is fixedly connected with the inner wall of the cooling box 2 in a bolt fixing or welding manner, and a plurality of upper air guiding holes 11 are uniformly distributed on the upper air guiding plate 10.
Referring to fig. 2, the lower air cooling assembly includes a supporting plate 13, a mounting plate 14, a second fan 15, and a lower air guide plate 16, the supporting plate 13 is fixed to the bottom of the cooling box 2 by means of bolting or welding, the mounting plate 14, the second fan 15, and the lower air guide plate 16 are sequentially disposed above the supporting plate 13, the periphery of the mounting plate 14 is fixed to the supporting plate 13 by means of bolting or welding, the second fan 15 is mounted to the mounting plate 14, the periphery of the lower air guide plate 16 is fixed to the top of the supporting plate 13 by means of bolting or welding, and a plurality of lower air guide holes 17 are uniformly distributed on the lower air guide plate 16.
By adopting the technical scheme, the upper surface and the lower surface of the waterproof coiled material are subjected to air cooling through the interaction of the upper air cooling assembly and the lower air cooling assembly, so that the cooling efficiency is improved; meanwhile, due to the arrangement of the upper air deflector 10 and the lower air deflector 16, when the air current generated by the fan flows through the upper air deflector 10 and the lower air deflector 16, the effect of air homogenization can be achieved, and the air current blown to the surface of the waterproof roll is more uniform.
Referring to fig. 2, a water collecting tank for collecting the collected water is formed between the support plate 13 and the inner wall of the cooling tank 2, and the water collecting tank is connected to a water collecting discharge pipe.
Through adopting above-mentioned technical scheme, ponding groove can be collected the ponding of waterproofing membrane cooling process in drippage to arrange 2 outsidess of cooler bin with it.
Referring to fig. 1-2, the atomizing assembly includes an atomizing humidifier 3 and a nozzle 12, the atomizing humidifier 3 is an existing cold mist type humidifier, the atomizing humidifier 3 is fixed on the outer wall of the cooling box 2 by bolts, a water injection port of the atomizing humidifier 3 is connected with a tap water pipe through a water supply pipe 4, an output end of the atomizing humidifier 3 is connected with a header pipe 5, and the header pipe 5 is connected with the nozzle 12 through a hose.
Through adopting above-mentioned technical scheme, produce water smoke through atomizing humidifier 3, water smoke is from 12 blowout of shower nozzle, and under the air current effect that upper and lower air-cooled subassembly produced, carry water smoke and spout waterproofing membrane's surface, water smoke not only can contact with waterproofing membrane, plays water-cooling effect, can also take away the heat in cooler bin 2, is favorable to improving waterproofing membrane's cooling effect.
Referring to fig. 3, one end of the nozzle 12 is fixedly connected with a thread block 19 through screws or welding, the thread block 19 is sleeved on a screw rod 18, two ends of the screw rod 18 are mounted on two sides of the cooling box 2 through bearings, one end of the screw rod 18 is fixedly connected with a motor 20 through a coupler, and the motor 20 is mounted on the outer wall of the cooling box 2 through bolts.
By adopting the technical scheme, the spray head 12 is arranged on the screw rod 18, and the screw rod 18 is utilized to drive the spray head 12 to reciprocate back and forth, so that the water mist can be favorably and uniformly blown to the surface of the waterproof coiled material.
Referring to fig. 2, an upper sponge roller 8 and a lower sponge roller 8 are arranged at one end, close to the discharging roller 7, inside the cooling box 2, roller shafts at two ends of each sponge roller 8 are rotatably installed on the inner wall of the cooling box 2 through bearings, and the sponge rollers 8 are tightly attached to the surface of the waterproof coiled material.
Through adopting above-mentioned technical scheme, through the setting of sponge roller 8, can adsorb the drop on waterproofing membrane surface to detach the surperficial moisture of waterproofing membrane.
It should be noted that, the utility model relates to a cooling device for producing waterproof coiled material, when using, waterproof coiled material enters into the cooling box 2 through the feed roller 6, and leave the cooling box 2 from the discharge roller 7, when waterproof coiled material cools off in the cooling box 2, first fan 9 produces the air current downwards, the air current downwards blows off from upper wind guiding hole 11 through upper wind guiding plate 10, second fan 15 produces the air current upwards, the air current upwards blows off from lower wind guiding hole 17 through lower wind guiding plate 16, meanwhile, atomizing humidifier 3 produces water smoke, and flow into every shower nozzle 12 from header pipe 5, and spout water smoke below upper wind guiding plate 10 and above lower wind guiding plate 16, the water smoke falls to the waterproof coiled material surface along with the air current under the effect of air current, the water smoke not only can contact with waterproof coiled material, play the water-cooling effect, in order to realize the combination of air cooling and water-cooling, thereby being beneficial to improving the cooling efficiency of the waterproof coiled material; the heat in the cooling box 2 can be taken away, and the cooling effect of the waterproof coiled material is improved; the water droplets in the cooling tank 2 drop into the water collection tank and are discharged to the outside of the cooling tank 2 through the water collection discharge pipe.
In the process of spraying water mist by the spray head 12, the motor 20 drives the screw rod 18 to rotate, and the thread block 19 on the screw rod 18 carries the spray head 12 to reciprocate under the action of the threads, so that the water mist is favorably and uniformly blown to the surface of the waterproof coiled material.
The basic principles and the main features of the invention and the advantages of the invention have been shown and described above. It will be understood by those skilled in the art that the present invention is not limited to the above embodiments, and that the foregoing embodiments and descriptions are provided only to illustrate the principles of the present invention without departing from the spirit and scope of the present invention. The scope of the invention is defined by the appended claims and equivalents thereof.
Claims (7)
1. The cooling device for producing the waterproof coiled material comprises a base (1), a cooling box (2), a feeding roller (6) and a discharging roller (7), wherein the cooling box (2) is fixed on the base (1) in a bolt fixing or welding mode, the feeding roller (6) is installed at one end of a feeding hole of the cooling box (2), and the discharging roller (7) is installed at one end of a discharging hole of the cooling box (2).
2. The cooling device for the production of the waterproof roll is characterized in that the upper air cooling component comprises a first fan (9) and an upper air guide plate (10), the first fan (9) is installed on the inner wall of the top of the cooling box (2), the upper air guide plate (10) is located below the first fan (9), the periphery of the upper air guide plate (10) is fixedly connected with the inner wall of the cooling box (2) in a bolt fixing or welding mode, and a plurality of upper air guide holes (11) are uniformly distributed in the upper air guide plate (10).
3. The cooling device for producing the waterproof roll material according to claim 1, wherein: the lower air cooling component comprises a supporting plate (13), a mounting plate (14), a second fan (15) and a lower air deflector (16), the supporting plate (13) is fixed at the bottom of the cooling box (2) in a bolt fixing or welding way, an installation plate (14), a second fan (15) and a lower air deflector (16) are sequentially arranged above the support plate (13), the periphery of the mounting plate (14) is fixed on the support plate (13) in a bolt fixing or welding way, the second fan (15) is arranged on the mounting plate (14), the periphery of the lower air deflector (16) is fixed on the top of the support plate (13) in a bolt fixing or welding way, a plurality of lower air guide holes (17) are uniformly distributed on the lower air guide plate (16).
4. The cooling device for the production of the waterproof roll material is characterized in that a water accumulation groove for collecting accumulated water is formed between the supporting plate (13) and the inner wall of the cooling box (2), and the water accumulation groove is connected with a water accumulation discharge pipe.
5. The cooling device for the production of the waterproof coiled material is characterized in that the spraying assembly comprises an atomizing humidifier (3) and a spray head (12), the atomizing humidifier (3) is fixed on the outer wall of the cooling box (2) through bolts, a water injection port of the atomizing humidifier (3) is connected with a tap water pipe through a water supply pipe (4), an output end of the atomizing humidifier (3) is connected with a main pipe (5), and the main pipe (5) is connected with the spray head (12) through a hose.
6. The cooling device for the production of the waterproof roll material is characterized in that one end of the spray head (12) is fixedly connected with a thread block (19) in a screw fixing or welding mode, the thread block (19) is sleeved on a screw rod (18) in a threaded mode, two ends of the screw rod (18) are installed on two sides of the cooling box (2) through bearings, and one end of the screw rod (18) is fixedly connected with a motor (20) arranged on the outer wall of the cooling box (2) through a coupler.
7. The cooling device for the production of the waterproof roll material according to claim 1, wherein an upper sponge roll (8) and a lower sponge roll (8) are arranged at one end of the interior of the cooling box (2) close to the discharge roll (7), roll shafts at two ends of each sponge roll (8) are rotatably arranged on the inner wall of the cooling box (2) through bearings, and the sponge rolls (8) are tightly attached to the surface of the waterproof roll material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920991492.3U CN210552477U (en) | 2019-06-27 | 2019-06-27 | Cooling device is used in waterproofing membrane production |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920991492.3U CN210552477U (en) | 2019-06-27 | 2019-06-27 | Cooling device is used in waterproofing membrane production |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210552477U true CN210552477U (en) | 2020-05-19 |
Family
ID=70675922
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920991492.3U Expired - Fee Related CN210552477U (en) | 2019-06-27 | 2019-06-27 | Cooling device is used in waterproofing membrane production |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210552477U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112577226A (en) * | 2020-12-11 | 2021-03-30 | 熊明舒 | Waterproofing membrane cooling device |
| CN113492506A (en) * | 2021-06-22 | 2021-10-12 | 深圳市旭龙光电有限公司 | Cooling device of optics level polycarbonate board |
| CN114368095A (en) * | 2021-12-30 | 2022-04-19 | 佛山市高明基业冷轧钢板有限公司 | Plate cooling device |
| CN117564467A (en) * | 2024-01-16 | 2024-02-20 | 辽宁华天航空科技股份有限公司 | Double-beam laser welding system and method for titanium alloy parts |
-
2019
- 2019-06-27 CN CN201920991492.3U patent/CN210552477U/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112577226A (en) * | 2020-12-11 | 2021-03-30 | 熊明舒 | Waterproofing membrane cooling device |
| CN113492506A (en) * | 2021-06-22 | 2021-10-12 | 深圳市旭龙光电有限公司 | Cooling device of optics level polycarbonate board |
| CN114368095A (en) * | 2021-12-30 | 2022-04-19 | 佛山市高明基业冷轧钢板有限公司 | Plate cooling device |
| CN114368095B (en) * | 2021-12-30 | 2023-11-21 | 佛山市高明基业冷轧钢板有限公司 | Panel cooling device |
| CN117564467A (en) * | 2024-01-16 | 2024-02-20 | 辽宁华天航空科技股份有限公司 | Double-beam laser welding system and method for titanium alloy parts |
| CN117564467B (en) * | 2024-01-16 | 2024-03-15 | 辽宁华天航空科技股份有限公司 | Double-beam laser welding system and method for titanium alloy parts |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN210552477U (en) | Cooling device is used in waterproofing membrane production | |
| CN209791630U (en) | Building rubbish crushing apparatus for building engineering | |
| CN203629358U (en) | Water-wheel driving type packless spray cooling tower | |
| CN115351956A (en) | A product cooling device for waterproofing membrane production | |
| CN219425274U (en) | Screw-thread steel production cooling device | |
| CN214872519U (en) | Cooling device of PE pipe extruder | |
| CN210453748U (en) | A multistage heat sink for inflation film manufacturing machine | |
| CN201032408Y (en) | Electrolyte cooling tower for electrolytic copper powder | |
| CN212666657U (en) | Circulating cooling device for automobile skylight drain pipe after extrusion molding | |
| CN2690066Y (en) | Dust removing device for hot-rolling fine rolling machine group | |
| CN210362115U (en) | Cooling device of elastomer modified asphalt waterproof coiled material | |
| CN210552327U (en) | Cable material cooling device | |
| CN214872928U (en) | Efficient screw rod cleaner material strip cooling solidification equipment | |
| CN218692863U (en) | Profiled steel forming cooling system for photovoltaic support | |
| CN216884840U (en) | Exempt from to beat protective layer cooling device for waterproofing membrane production | |
| CN212707633U (en) | Cold air device for plastic sheet production | |
| CN221122741U (en) | Waterproofing membrane production cooling device | |
| CN218730115U (en) | Cable cooling device | |
| CN220534895U (en) | Material guiding device of plastic processing extruder | |
| CN216680078U (en) | Batch cooling device for nut production | |
| CN216466089U (en) | Modified plastics production is with cooling air-dries integrative device | |
| CN213968971U (en) | Antidetonation screw-thread steel die-casting device | |
| CN220004703U (en) | Rust-proof device for bolt production | |
| CN214780765U (en) | Skid-mounted integrated nitrogen generating device special for laser cutting or welding | |
| CN216885183U (en) | Use efficient feed arrangement on inflation film manufacturing machine |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20200519 |