CN219948676U - Modified asphalt waterproof coiled material adhesive surface laminating device - Google Patents
Modified asphalt waterproof coiled material adhesive surface laminating device Download PDFInfo
- Publication number
- CN219948676U CN219948676U CN202321666563.5U CN202321666563U CN219948676U CN 219948676 U CN219948676 U CN 219948676U CN 202321666563 U CN202321666563 U CN 202321666563U CN 219948676 U CN219948676 U CN 219948676U
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- CN
- China
- Prior art keywords
- modified asphalt
- waterproof coiled
- coiled material
- asphalt waterproof
- upper roller
- Prior art date
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- 239000010426 asphalt Substances 0.000 title claims abstract description 89
- 239000000463 material Substances 0.000 title claims abstract description 62
- 238000010030 laminating Methods 0.000 title claims abstract description 23
- 239000000853 adhesive Substances 0.000 title claims abstract description 13
- 230000001070 adhesive effect Effects 0.000 title claims abstract description 13
- 238000007790 scraping Methods 0.000 claims abstract description 34
- 238000010438 heat treatment Methods 0.000 claims description 33
- 210000002489 tectorial membrane Anatomy 0.000 claims description 11
- 239000012528 membrane Substances 0.000 claims description 10
- 238000005520 cutting process Methods 0.000 claims description 4
- 239000003292 glue Substances 0.000 claims description 2
- 238000004078 waterproofing Methods 0.000 claims description 2
- 238000005498 polishing Methods 0.000 claims 1
- 239000002313 adhesive film Substances 0.000 abstract description 10
- 230000000181 anti-adherent effect Effects 0.000 abstract description 10
- 239000011248 coating agent Substances 0.000 abstract description 8
- 238000000576 coating method Methods 0.000 abstract description 8
- 230000005484 gravity Effects 0.000 abstract description 4
- 230000009286 beneficial effect Effects 0.000 abstract description 3
- 239000011159 matrix material Substances 0.000 abstract description 3
- 239000004744 fabric Substances 0.000 description 13
- 210000004379 membrane Anatomy 0.000 description 8
- 238000000034 method Methods 0.000 description 6
- 238000007711 solidification Methods 0.000 description 6
- 230000008023 solidification Effects 0.000 description 6
- 210000004400 mucous membrane Anatomy 0.000 description 5
- 238000005056 compaction Methods 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- 230000000903 blocking effect Effects 0.000 description 2
- 238000004140 cleaning Methods 0.000 description 2
- 238000001816 cooling Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000007599 discharging Methods 0.000 description 2
- 230000006872 improvement Effects 0.000 description 2
- 239000003208 petroleum Substances 0.000 description 2
- 240000000491 Corchorus aestuans Species 0.000 description 1
- 235000011777 Corchorus aestuans Nutrition 0.000 description 1
- 235000010862 Corchorus capsularis Nutrition 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000005485 electric heating Methods 0.000 description 1
- 230000005496 eutectics Effects 0.000 description 1
- 238000001125 extrusion Methods 0.000 description 1
- 239000000835 fiber Substances 0.000 description 1
- 239000007888 film coating Substances 0.000 description 1
- 238000009501 film coating Methods 0.000 description 1
- 239000003365 glass fiber Substances 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 238000002955 isolation Methods 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 239000007769 metal material Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000004745 nonwoven fabric Substances 0.000 description 1
- 239000002985 plastic film Substances 0.000 description 1
- 229920006255 plastic film Polymers 0.000 description 1
- 229920000728 polyester Polymers 0.000 description 1
- 238000003860 storage Methods 0.000 description 1
- 238000004804 winding Methods 0.000 description 1
Landscapes
- Road Paving Machines (AREA)
Abstract
The utility model discloses a modified asphalt waterproof coiled material adhesive surface laminating device which comprises a base and brackets, wherein the brackets are fixedly arranged on the top surface of the base, and a lower roller is rotationally connected between the brackets. The beneficial effects are that: when the modified asphalt waterproof coiled material is coated, the modified asphalt waterproof coiled material and the anti-adhesive film can pass through the space between the lower roller and the upper roller, the upper roller extrudes the anti-adhesive film through gravity, so that the anti-adhesive film and the modified asphalt waterproof coiled material are firmly bonded, the asphalt extruded by the upper roller flows out from the two sides of the modified asphalt waterproof coiled material to the surfaces of the upper roller and the lower roller, the asphalt adhered to the surfaces of the upper roller and the lower roller is scraped off by the scraping plate along with the rotation of the upper roller and the lower roller, flows into the material collecting tank along the scraping plate, flows into the material collecting tank through the bottom slope of the bottom surface of the material collecting tank, and is used for completing the removal and collection of the extruded asphalt, so that the pollution of the anti-adhesive film and the matrix of the modified asphalt waterproof coiled material is avoided, the neatness of the coating is improved, and the coating efficiency is improved.
Description
Technical Field
The utility model relates to the technical field of production of modified asphalt waterproof coiled materials, in particular to a surface sticking and film laminating device for modified asphalt waterproof coiled materials.
Background
The SBS modified asphalt waterproof coiled material is manufactured by taking SBS rubber modified petroleum asphalt as an impregnating covering layer, taking polyester fiber non-woven fabrics, jute cloth, glass fiber felts and the like as a base, taking a plastic film as an anti-sticking isolation layer, processing and manufacturing the base through the procedures of material selection, proportioning, eutectic melting, impregnating, composite forming, curling and the like, wherein in the manufacturing process of the base coiled material, the base cloth is unreeled by an unreeler, then passes through an asphalt impregnating device filled with liquid petroleum asphalt, the base cloth is adhered with asphalt by the asphalt impregnating device, the base cloth is primarily formed into the waterproof coiled material, the base cloth is continuously conveyed by the asphalt impregnating device, then enters the laminating device, the two surfaces of the base cloth, which are away from each other, are covered by a layer of anti-sticking film by the laminating device, so that a waterproof coiled material finished product can be coiled, and is convenient to store, transport and develop in future construction, and then the base cloth finished product is subjected to cooling treatment, the utility model provides a cooling and solidification of asphalt and finally form a waterproof coiled material finished product, found after retrieving that, publication number is CN214294937U, the name is a modified asphalt waterproof coiled material tectorial membrane device, this application proposes the tectorial membrane device with prevent the mucous membrane adhesion in child base cloth lower surface's in-process, because asphalt has not yet solidified, the asphalt that presss from both sides between child base cloth and the mucous membrane and child base cloth upper surface can flow to child base cloth's both sides, afterwards, asphalt can bore the space between mucous membrane and the tectorial membrane platform, pollute the mucous membrane, reduce the problem of tectorial membrane quality, through setting up a part distance of tectorial membrane platform to the shape that the middle part is high and both sides are low in the formation, make tectorial membrane platform inside cavity, offer a plurality of through-holes at the mesa of tectorial membrane platform, tectorial membrane platform makes child base cloth and mucous membrane receive the extrusion, asphalt can flow to child base cloth's both sides, and pass through the through-hole and flow into tectorial membrane platform inside temporary storage, the asphalt can be reduced and the amount of the gap between the anti-mucous membrane and the laminating table is reduced, the risk of pollution of the anti-mucous membrane is reduced, and the laminating quality is improved.
However, the application still needs to adopt the compaction roller to extrude and fix waterproof coiled material and anti-mucous membrane in later stage, though the work of discharging asphalt is carried out in earlier stage, but the excessive asphalt is difficult to be discharged by providing enough pressure by means of the raised laminating table, a small amount of asphalt is still extruded in the later stage compaction process, so that the asphalt is adhered to the surface of the compaction roller, pollution can still be generated, meanwhile, the phenomenon of precooling solidification of the asphalt is inevitably generated after the asphalt is extruded, the fluidity is reduced, even the phenomenon of blocking holes is generated, the phenomenon of blocking occurs in asphalt discharging and collecting, the working efficiency is influenced, and further improvement can be made.
For the problems in the related art, no effective solution has been proposed at present.
Disclosure of Invention
(one) solving the technical problems
Aiming at the defects of the prior art, the utility model provides the surface-sticking film laminating device for the modified asphalt waterproof coiled material, which has the advantages of avoiding pollution, improving film laminating efficiency and improving use convenience, thereby solving the problems in the prior art.
(II) technical scheme
In order to realize the advantages of avoiding pollution, improving the film coating efficiency and improving the use convenience, the utility model adopts the following specific technical scheme:
modified asphalt waterproofing membrane glues face tectorial membrane device, including base and support, base top surface fixed mounting has the support, and rotates between the support and be connected with the lower roll to the support surface runs through and has seted up the movable trough, the movable trough inboard is provided with the movable block, and the movable block both ends are located movable trough inner wall both sides fixedly connected with spout, and spout and the inside sliding connection of movable trough, rotate between the movable block and be connected with the upper roll, base top surface position support both sides fixedly connected with mounting bracket, and the vertical sliding connection that runs through of mounting bracket surface has the guide arm, and guide arm bottom surface fixedly connected with link plate, be connected with the spring between link plate and the base, guide arm top surface fixed mounting has the heating cabinet, and heating cabinet top surface fixed mounting has the scraper blade, and scraper blade top surface one end is located the heating cabinet top and has seted up the collection groove, the bottom slope has been seted up to the bottom surface in the collection groove, fixedly connected with workbin between the guide arm below the heating cabinet.
Further, heating wires are fixedly arranged in the heating box, and a plurality of heating wires are uniformly distributed.
Furthermore, the bottom slope is put down to two ends along the middle position of the material collecting groove, and the top surface of the bottom slope is polished.
Further, the length of the material box is longer than that of the scraping plate, and two ends of the material box extend to the outer side of the material collecting groove.
Further, the scraping plates are obliquely arranged, the scraping plates are provided with cutting edges, and side plates are fixedly arranged at the two side edges of the top surface of each scraping plate.
Further, the two ends of the spring are fixedly connected with the connecting plate and the base respectively.
Further, the length of the scraping plate is larger than that of the upper roller, and the length of the upper roller is equal to that of the lower roller.
Further, the upper roller rotates counterclockwise, and the lower roller rotates clockwise.
(III) beneficial effects
Compared with the prior art, the utility model provides a modified asphalt waterproof coiled material adhesive surface laminating device, which has the following beneficial effects:
(1) When the modified asphalt waterproof coiled material is coated, the modified asphalt waterproof coiled material and the anti-adhesive film can pass through the space between the lower roller and the upper roller, the upper roller extrudes the anti-adhesive film through gravity, so that the anti-adhesive film and the modified asphalt waterproof coiled material are firmly bonded, the asphalt extruded by the upper roller flows out from two sides of the modified asphalt waterproof coiled material to the surfaces of the upper roller and the lower roller, the asphalt adhered to the surfaces of the upper roller and the lower roller is scraped off by the scraping plate along with the rotation of the upper roller and the lower roller, flows into the material collecting tank along the scraping plate, flows into the material collecting tank through the bottom slope at the bottom surface of the material collecting tank, and is completely removed and collected, the extruded asphalt is prevented from polluting the anti-adhesive film and the modified asphalt waterproof coiled material body, the neatness of the coating is improved, and the coating efficiency is improved.
(2) According to the utility model, the heating box and the spring are adopted, the spring is always in a compressed state in the asphalt scraping process of the scraping plate, an upward force is generated to push the scraping plate to abut against the upper roller and the lower roller, the stability and the efficiency of scraping are improved, meanwhile, the electric heating wire in the heating box is in a heating state, the top surface of the scraping plate and the collecting groove are in a high-temperature state through heat conduction, and asphalt solidification is avoided, so that the asphalt collection efficiency is improved, the problem of difficult later cleaning caused by asphalt solidification is avoided, and the convenience of use is improved.
Drawings
In order to more clearly illustrate the embodiments of the present utility model or the technical solutions in the prior art, the drawings that are needed in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present utility model, and other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
Fig. 1 is a schematic structural diagram of a modified asphalt waterproof coiled material adhesive surface laminating device;
fig. 2 is a front view of the modified asphalt waterproof coiled material adhesive surface laminating device provided by the utility model;
FIG. 3 is a schematic view of a heating box according to the present utility model;
fig. 4 is a schematic diagram showing the connection of the upper roller and the moving block according to the present utility model.
In the figure:
1. a base; 2. a bracket; 3. a lower roller; 4. an upper roller; 5. a moving groove; 6. a moving block; 7. a chute; 8. a heating box; 9. heating wires; 10. a material collecting groove; 11. a side plate; 12. a feed box; 13. a guide rod; 14. a mounting frame; 15. a connecting plate; 16. a spring; 17. a scraper; 18. and (5) a bottom slope.
Detailed Description
For the purpose of further illustrating the various embodiments, the present utility model provides the accompanying drawings, which are a part of the disclosure of the present utility model, and which are mainly used to illustrate the embodiments and, together with the description, serve to explain the principles of the embodiments, and with reference to these descriptions, one skilled in the art will recognize other possible implementations and advantages of the present utility model, wherein elements are not drawn to scale, and like reference numerals are generally used to designate like elements.
According to the embodiment of the utility model, a modified asphalt waterproof coiled material adhesive surface laminating device is provided.
The utility model is further described with reference to the accompanying drawings and the specific embodiments, as shown in fig. 1-4, the modified asphalt waterproof coiled material adhesive surface laminating device according to the embodiment of the utility model comprises a base 1 and a support 2, wherein the support 2 is fixedly arranged on the top surface of the base 1, the supports 2 are rotationally connected with a lower roller 3, the lower roller 3 is rotationally connected with the support 2 through a roller shaft, a movable groove 5 is penetrated through the surface of the support 2, a movable block 6 is arranged on the inner side of the movable groove 5, two ends of the movable block 6 are fixedly connected with sliding grooves 7 on two sides of the inner wall of the movable groove 5, the sliding grooves 7 are in sliding connection with the inside of the movable groove 5, the sliding grooves 7 play a limiting role, the movable block 6 is prevented from falling off, an upper roller 4 is rotationally connected between the movable blocks 6, the upper roller 4 is rotationally connected with the movable block 6 through the roller shaft, two sides of the support 2 on the top surface of the base 1 are fixedly connected with a mounting frame 14, the surface of the mounting frame 14 vertically penetrates through the guide rod 13 in a sliding connection manner, the bottom surface of the guide rod 13 is fixedly connected with the connecting plate 15, a spring 16 is connected between the connecting plate 15 and the base 1, the top surface of the guide rod 13 is fixedly provided with the heating box 8, the top surface of the heating box 8 is fixedly provided with the scraping plate 17, one end of the scraping plate 17 is abutted against the upper roller 4 and the lower roller 3, one end of the top surface of the scraping plate 17 is positioned above the heating box 8 and provided with the collecting tank 10, the inner bottom surface of the collecting tank 10 is provided with the bottom slope 18, the lower part of the heating box 8 is fixedly connected with the feed box 12 between the guide rods 13, the two sides of the base 1 are provided with the modified asphalt waterproof coiled material winding frame and the anti-mucosa unwinding frame, which are common structures in the field are not repeated in many ways, when the modified asphalt waterproof coiled material is coated, the modified asphalt waterproof coiled material and the anti-mucosa can pass through between the lower roller 3 and the upper roller 4, the anti-mucosa is extruded by gravity, the anti-adhesive film and the modified asphalt waterproof coiled material are firmly adhered, asphalt extruded by the upper roller 4 flows out from two sides of the modified asphalt waterproof coiled material to the surfaces of the upper roller 4 and the lower roller 3, the scraping plate 17 scrapes off the asphalt adhered to the surfaces of the upper roller 4 and the lower roller 3 along with the rotation of the upper roller 4 and the lower roller 3, the asphalt flows into the aggregate tank 10 along the scraping plate 17, flows into the feed box 12 through the bottom slope 18 on the bottom surface of the aggregate tank 10, the cleaning and the collection of the extruded asphalt are completed, the extruded asphalt is prevented from polluting the anti-adhesive film and the matrix of the modified asphalt waterproof coiled material, the neatness of a coating is improved, and the coating efficiency is improved.
In one embodiment, heating wire 9 is fixed inside heating cabinet 8, and heating wire 9 evenly distributed has a plurality ofly, heating cabinet 8 and scraper blade 17 all adopt the metal material, be convenient for heat conduction, in the in-process that scraper blade 17 scraped pitch, spring 16 is in compression state all the time, upward power is produced, promote scraper blade 17 to support tightly upper roller 4 and lower roller 3, improve the stability and the efficiency of scraping the material, simultaneously, heating wire 9 inside heating cabinet 8 is in heating state, make scraper blade 17 top surface and collecting tank 10 be in the high temperature state through heat conduction, avoid pitch solidification, thereby improved the collection efficiency to pitch, avoid pitch solidification to arouse the difficult problem of later stage clearance, the convenience of using has been improved.
In one embodiment, the bottom slope 18 slopes toward both ends along the middle position of the collecting tank 10, and the top surface of the bottom slope 18 is polished to facilitate the outward flow of asphalt.
In one embodiment, bin 12 is longer than flight 17 and both ends of bin 12 extend outside of trough 10 to facilitate the flow of asphalt into bin 12.
In one embodiment, the scraping plate 17 is obliquely arranged, the scraping plate 17 is provided with a cutting edge, the cutting edge is abutted with the upper roller 4 and the lower roller 3, scraping is facilitated, and the edge plates 11 are fixedly arranged on the two side edges of the top surface of the scraping plate 17, so that asphalt is prevented from sliding down along the two sides of the scraping plate 17.
In one embodiment, the two ends of the spring 16 are fixedly connected with the connecting plate 15 and the base 1 respectively, so that the connection is prevented from being separated.
In one embodiment, the length of the scraping plate 17 is longer than the length of the upper roller 4, and the length of the upper roller 4 is equal to the length of the lower roller 3, so that the comprehensiveness of scraping asphalt is ensured.
In one embodiment, the upper roller 4 rotates anticlockwise, the lower roller 3 rotates clockwise, the upper roller 4 rotates under the friction force of the anti-mucous membrane, and the lower roller 3 rotates under the friction force of the matrix of the modified asphalt waterproof coiled material.
Working principle:
when the modified asphalt waterproof coiled material is coated, the modified asphalt waterproof coiled material and the anti-mucous membrane can pass through the space between the lower roller 3 and the upper roller 4, the upper roller 4 is used for extruding the anti-mucous membrane through gravity, so that the anti-mucous membrane and the modified asphalt waterproof coiled material are firmly bonded, asphalt extruded by the upper roller 4 flows out of the two sides of the modified asphalt waterproof coiled material to the surfaces of the upper roller 4 and the lower roller 3, along with the rotation of the upper roller 4 and the lower roller 3, the asphalt attached to the surfaces of the upper roller 4 and the lower roller 3 is scraped off by the scraper 17, flows into the aggregate tank 10 along the scraper 17, flows into the feed box 12 through the bottom slope 18 at the bottom surface of the collecting tank 10, and is used for completing the removal and collection of the extruded asphalt, the anti-mucous membrane and the modified asphalt waterproof coiled material carcass are prevented from being polluted by the extruded asphalt, the neatly of the coating is improved, the efficiency of the coating is improved, meanwhile, the spring 16 is always in a compressed state in the process of scraping the asphalt by the scraper 17, the scraper 17 is pushed to tightly the upper roller 4 and the lower roller 3, the stability and the efficiency of the scraping are improved, meanwhile, the 9 inside the heating box 8 is in a heating state, the asphalt is in a high temperature state, the top surface is enabled to be kept in a high temperature state, the heating state is enabled, the asphalt is prevented from being difficult to be cleaned, and the problem is prevented from being caused, and the difficult to be cleaned up.
In the present utility model, unless explicitly specified and limited otherwise, the terms "mounted," "configured," "connected," "secured," "screwed," and the like are to be construed broadly and may be, for example, fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; either directly or indirectly through intermediaries, or in communication with each other or in interaction with each other, unless explicitly defined otherwise, the meaning of the terms described above in this application will be understood by those of ordinary skill in the art in view of the specific circumstances.
The foregoing description of the preferred embodiments of the utility model is not intended to be limiting, but rather is intended to cover all modifications, equivalents, alternatives, and improvements that fall within the spirit and scope of the utility model.
Claims (8)
1. The utility model provides a modified asphalt waterproofing membrane glues face tectorial membrane device, its characterized in that, including base (1) and support (2), base (1) top surface fixed mounting has support (2), and rotates between support (2) and be connected with lower roller (3) to support (2) surface runs through and has seted up movable groove (5), movable groove (5) inboard is provided with movable block (6), and movable block (6) both ends are located movable groove (5) inner wall both sides fixedly connected with spout (7) to spout (7) and movable groove (5) inside sliding connection, rotate between movable block (6) and be connected with upper roller (4), base (1) top surface position support (2) both sides fixedly connected with mounting bracket (14), and vertical running through sliding connection in mounting bracket (14) surface has guide arm (13) to guide arm (13) bottom surface fixedly connected with link plate (15), be connected with spring (16) between link plate (15) and base (1), guide arm (13) top surface fixed mounting has heating box (8), and heating box (8) top surface fixedly connected with scraper blade (17) to be provided with scraper blade (8) top surface and inside sliding connection, top surface (17) is seted up on top surface (10), a feed box (12) is fixedly connected between the guide rods (13) below the heating box (8).
2. The modified asphalt waterproof coiled material surface-sticking film laminating device according to claim 1, wherein heating wires (9) are fixedly arranged in the heating box (8), and a plurality of heating wires (9) are uniformly distributed.
3. The modified asphalt waterproof coiled material adhesive surface laminating device according to claim 1, wherein the bottom slope (18) is arranged along the middle position of the aggregate groove (10) towards two ends, and the top surface of the bottom slope (18) is subjected to polishing treatment.
4. The modified asphalt waterproof roll adhesive surface laminating device according to claim 1, wherein the length of the material box (12) is longer than that of the scraping plate (17), and two ends of the material box (12) extend to the outer side of the material collecting groove (10).
5. The modified asphalt waterproof coiled material adhesive surface laminating device according to claim 1, wherein the scraping plates (17) are obliquely arranged, cutting edges are formed on the scraping plates (17), and side plates (11) are fixedly arranged on two side edges of the top surface of the scraping plates (17).
6. The modified asphalt waterproof coiled material surface-sticking laminating device according to claim 1, wherein two ends of the spring (16) are fixedly connected with the connecting plate (15) and the base (1) respectively.
7. The modified asphalt waterproof coiled material adhesive surface laminating device according to claim 1, wherein the length of the scraping plate (17) is larger than that of the upper roller (4), and the length of the upper roller (4) is equal to that of the lower roller (3).
8. The modified asphalt waterproof coiled material adhesive surface laminating device according to claim 1, wherein the upper roller (4) rotates anticlockwise, and the lower roller (3) rotates clockwise.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321666563.5U CN219948676U (en) | 2023-06-28 | 2023-06-28 | Modified asphalt waterproof coiled material adhesive surface laminating device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321666563.5U CN219948676U (en) | 2023-06-28 | 2023-06-28 | Modified asphalt waterproof coiled material adhesive surface laminating device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219948676U true CN219948676U (en) | 2023-11-03 |
Family
ID=88543530
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202321666563.5U Active CN219948676U (en) | 2023-06-28 | 2023-06-28 | Modified asphalt waterproof coiled material adhesive surface laminating device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219948676U (en) |
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2023
- 2023-06-28 CN CN202321666563.5U patent/CN219948676U/en active Active
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