CN211972202U - Production system of modified asphalt waterproof roll material with tire self-adhesive polymer - Google Patents
Production system of modified asphalt waterproof roll material with tire self-adhesive polymer Download PDFInfo
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- CN211972202U CN211972202U CN201922483085.4U CN201922483085U CN211972202U CN 211972202 U CN211972202 U CN 211972202U CN 201922483085 U CN201922483085 U CN 201922483085U CN 211972202 U CN211972202 U CN 211972202U
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Abstract
The utility model relates to a have child self-adhesion polymer modified asphalt waterproofing membrane's production system, a serial communication port, include that the child base that sets gradually along the coiled material direction of motion expands frame, preimpregnation unit, first fat liquoring unit, first water-cooling bed, second fat liquoring unit, forced air cooling case, lower surface tectorial membrane unit, second water-cooling bed, coiled material rolling frame and baling press to and upper surface tectorial membrane unit, according to coiled material advancing direction upper surface tectorial membrane unit set up in the middle part or the front portion of second water-cooling bed. The utility model provides a water bed incrustation scale influence self-adhesion coiled material peel strength test problem and glue the sponge roller and cause the production shut down problem in the fat liquoring technology of tradition once, solved the direct tectorial membrane of traditional secondary fat liquoring technology after the fat liquoring, the result because the barrier film destroys, silicon oil takes place the migration and a series of problems that lead to.
Description
Technical Field
The utility model belongs to waterproofing membrane production field, concretely relates to have child self-adhesion polymer modified asphalt waterproofing membrane's production system.
Background
The self-adhesive polymer modified asphalt waterproof coiled material with the base is a self-adhesive waterproof coiled material which is prepared by taking a polyester base as a base, taking polymer modified asphalt added with resin as a coating material, covering a PE film, fine sand or a strippable isolating film with silicone oil on the upper surface and covering the strippable isolating film with the silicone oil on the lower surface as an anti-sticking material.
The production process of the self-adhesive polymer modified asphalt waterproof coiled material with the padding mainly comprises two processes: one oiling and two oiling. Wherein, the primary oiling process is that self-adhesive modified asphalt coating materials are coated on the upper surface and the lower surface of the pre-soaked tire base, and the tire base is directly coated with the self-adhesive modified asphalt coating materials through water bed cooling; it has the following problems: can produce the incrustation scale after the cooling water live time overlength, and self-adhesion pitch directly the tectorial membrane easily causes to peel off the test unqualifiedly behind the water bed that produces the incrustation scale, influences and peels off the test, simultaneously, needs the sponge roller to suck dry after the water bed cooling, also easily glues the roller and causes the production to shut down. The secondary oiling process is that the pre-impregnated tire base is coated with self-adhesive modified asphalt coating material on the primary upper surface, is cooled by a water bed, is coated with the self-adhesive modified asphalt coating material for the second time, and is coated with a film; although the above problems of one-time oiling can be avoided, the following problems still exist: because the temperature after secondary oil coating is higher (the temperature of the 3mm coated coil is 110 ℃ C. and the temperature of the 4mm coated coil is 130 ℃ C.) the isolating film is easy to damage if the coating is directly carried out, so that the silicone oil is migrated, the storage stability is affected, and the film is difficult to tear during construction. Therefore, the production process and the production system of the self-adhesive polymer-modified asphalt waterproof roll with the tire are urgently needed to be optimized and improved.
SUMMERY OF THE UTILITY MODEL
The utility model aims to overcome prior art's defect, provide a production system that has child self-adhesion polymer modified asphalt waterproofing membrane.
In order to achieve the above purpose, the technical scheme adopted by the utility model is as follows:
the utility model provides a have child self-adhesion polymer modified asphalt waterproofing membrane's production system, includes that the child base that sets gradually along the coiled material direction of motion expands frame, preimpregnation unit, first fat liquoring unit, first water-cooling bed, second fat liquoring unit, forced air cooling case, lower surface tectorial membrane unit, second water-cooling bed, upper surface tectorial membrane unit, coiled material rolling frame and baling press.
Furthermore, the pre-dipping unit comprises a pre-dipping oil pool, and a first guide roller, a second guide roller, an extrusion roller group and a third guide roller which are sequentially arranged along the moving direction of the coiled material.
Furthermore, first fat liquoring unit includes first fat liquoring pond, first forging pump, along the fourth guide roll, first rotor roll, the first fixed thick roller set that the coiled material direction of motion set gradually, the material import of first forging pump pass through the pipeline with first fat liquoring pond is linked together, the discharge gate of first forging pump set up in the top of coiled material.
Furthermore, a sponge roller, a hot air knife and a carrier roller are further arranged between the first water cooling bed and the second oiling unit, the hot air knife is obliquely arranged in a direction opposite to the advancing direction of the coiled material, and the carrier roller is arranged close to the second oiling unit.
Further, the second oiling unit includes that the second scribbles the oil bath, and the second pump of beating, second live-rollers and the second that set gradually along the coiled material direction of motion decide thick roller set, the material import of second pump of beating pass through the pipeline with the second scribbles the oil bath and is linked together, the discharge gate of second pump of beating set up in the top of coiled material.
Furthermore, the air cooling box comprises a plurality of rows of cold air knives arranged in parallel, and the cold air knives are arranged in a direction opposite to the advancing direction of the coiled material in an inclined mode.
Furthermore, the included angle between the cold air knife and the direction opposite to the advancing direction of the coiled material is 135 degrees.
Furthermore, the width of the cold air knife is more than or equal to that of the coiled material, and the length of the air cooling box is 1 meter.
Further, the lower surface film coating unit comprises a lower isolating film, a first flattening roller and a first film coating roller, wherein the first flattening roller and the first film coating roller are sequentially arranged along the advancing direction of the lower isolating film.
Further, upper surface tectorial membrane unit includes the barrier film, follows go up second nip roll and the second tectorial membrane roller that barrier film advancing direction set gradually, the second tectorial membrane roller set up in the top of second water-cooling bed, and be close to the one end of coiled material rolling frame.
Compared with the prior art, the beneficial effects of the utility model reside in that:
the utility model adopts the secondary oil coating process by arranging the first oil coating unit and the second oil coating unit, solves the problems that the scale of the water bed affects the peeling strength test of the self-adhesive coiled material and the production shutdown is caused by the adhesion of the sponge roller, and improves the construction bonding performance of the self-adhesive coiled material; the utility model discloses an increase one set of forced air cooling case between second fat liquoring unit and lower surface tectorial membrane unit, the coiled material after the secondary fat liquoring carries out the cold wind cooling, reduce the tectorial membrane below 70 ℃, and set up upper surface tectorial membrane unit on second water-cooling bed, the cold bed that intakes immediately after the tectorial membrane of lower surface is accomplished carries out the secondary cooling, and the tectorial membrane of upper surface is accomplished at the secondary cooling in-process, thereby the tectorial membrane temperature of surface all obtains reducing about making, traditional secondary fat liquoring technology has been solved and direct tectorial membrane after the fat liquoring, destroy because of the barrier film, a series of problems that silicon oil takes place to migrate and lead to, for example: the storage stability of the coiled material is influenced, and the phenomenon of difficult film tearing occurs during construction. The utility model discloses set up air-cooling case width more than or equal to waterproofing membrane's width, it is 1m to set up air-cooling case length, it can be side by side 10 rows of cold air knives, and the next-door neighbour tectorial membrane position sets up, after self-adhesion coiled material secondary oiling, use air-cooling case device to cool off immediately, cold air knife cold air temperature control is at 10-15 ℃, and the reverse coiled material direction of advance of angle 135 sets up, through the cooling of air-cooling case, the tectorial membrane temperature can reduce to below 70 ℃, satisfy the expectation parameter value.
Drawings
Fig. 1 is a schematic structural diagram of an embodiment of the present invention;
FIG. 2 is an enlarged view of FIG. 1 at A;
in the figure: 1. the device comprises a tire base unfolding frame, 2, a pre-dipping unit, 3, a first oiling unit, 4, a first water cooling bed, 5, a second oiling unit, 6, an air cooling box, 7, a lower surface film coating unit, 8, a second water cooling bed, 9, a coiled material winding frame, 10, a packaging machine, 11, an upper surface film coating unit, 12, a pre-dipping oil pool, 13, a first guide roller, 14, a second guide roller, 15, an extrusion roller, 16 and a third guide roller; 17. the device comprises a first coating pool, 18, a first material applying pump, 19, a fourth guide roller, 20, a first rotating roller, 21, a first fixed-thickness roller, 22, a sponge roller, 23, a hot air knife, 24, a carrier roller, 25, a second coating pool, 26, a second material applying pump, 27, a second rotating roller, 28, a second fixed-thickness roller, 30, a cold air knife, 31, a lower isolating film, 32, a first flattening roller, 33, a first film coating roller, 34, an upper isolating film, 35, a second flattening roller, 36, a second film coating roller, 37, a coiled material, 38 and a base.
Detailed Description
The technical solution of the present invention will be described clearly and completely with reference to the accompanying drawings, and obviously, the described embodiments are some, but not all embodiments of the present invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.
The present invention will be described in further detail with reference to the accompanying drawings.
As shown in fig. 1-2 the utility model relates to an embodiment of child self-adhesion polymer modified asphalt waterproofing membrane's production system, include along the child base expansion frame 1 that 37 direction of motion of coiled material set gradually, pre-soak unit 2, first fat liquoring unit 3, first water-cooling bed 4, second fat liquoring unit 5, air-cooled box 6, lower surface tectorial membrane unit 7, second water-cooling bed 8, upper surface tectorial membrane unit 11, coiled material rolling frame 9 and 10, upper surface tectorial membrane unit 11 set up in the top of second water-cooling bed 8.
As an embodiment of the production system of the self-adhesive polymer modified asphalt waterproof coiled material with the tire of the present invention, the pre-dipping unit 2 comprises a pre-dipping oil tank 12, and a first guide roller 13, a second guide roller 14, an extrusion roller 15 group and a third guide roller 16 which are sequentially arranged along the moving direction of the coiled material 37; the first guide roller 13, the second guide roller 14, the pressing roller 15 group, and the third guide roller 16 are disposed above the prepreg oil bath 12, and the second guide roller 14 is disposed below the liquid level in the prepreg oil bath 12.
Further, the group of squeeze rollers 15 includes 2 squeeze rollers 15 symmetrically disposed with the web 37 as a central plane, and the web 37 is disposed between the 2 squeeze rollers 15.
As an embodiment of the production system of the self-adhesive polymer modified asphalt waterproof roll with a tire, the first oiling unit 3 includes a first oiling pool 17, a first material-feeding pump 18, a fourth guide roller 19, a first rotating roller 20 and a first fixed thickness roller set in sequence along the moving direction of the roll material 37, the material inlet of the first material-feeding pump 18 is communicated with the first oiling pool 17 through a pipeline, the discharge port of the first material-feeding pump 18 is arranged above the roll material 37 and corresponds to the position of the first rotating roller 20; the bottom portions of the fourth guide roller 19 and the first rotating roller 20 are disposed below the liquid level in the first oiling pool 17.
Further, the first fixed thick roller group comprises 2 first fixed thick rollers 21 symmetrically arranged along the vertical direction; the web 37 is arranged between 2 first fixed-thickness rollers 21 and is tangent to 2 first fixed-thickness rollers 21.
As an embodiment of the utility model relates to a there is child self-adhesion polymer modified asphalt waterproofing membrane's production system, be provided with cooling liquid in the first water-cooling bed 4, coiled material 37's lower surface with cooling liquid's upper surface butt.
As an embodiment of the production system of the self-adhesive polymer modified asphalt waterproof roll with a tire of the present invention, a sponge roller 22, a hot air knife 23 and a carrier roller 24 are further disposed between the first water-cooling bed 4 and the second oiling unit 5, and the sponge roller 22 is disposed below the roll 37 and tangent to the roll 37; the hot air knife 23 is obliquely arranged opposite to the advancing direction of the web 37, so that hot air flow opposite to the advancing direction of the web 37 is formed; the carrier roller 24 is arranged next to the second oiling unit 5.
Further, the hot air knife 23 is angled 135 degrees from the direction of advance of the web 37.
As an embodiment of the utility model relates to a there is child self-adhesion polymer modified asphalt waterproofing membrane's production system, second fat liquoring unit 5 includes that the second scribbles the oil bath 25, and second material pump 26 is beaten to the second, along second live-rollers 27 and the second fixed-thickness roller group that 37 direction of motion of coiled material set gradually, the material import of second material pump 26 through the pipeline with second scribbles oil bath 25 and is linked together, second material pump 26's discharge gate set up in coiled material 37 the top, and with second live-rollers 27's position is corresponding.
Further, the second fixed-thickness roller group comprises 2 second fixed-thickness rollers 28 symmetrically arranged along the vertical direction; the web 37 is arranged between 2 of the second fixed-thickness rollers 28 and is tangent to 2 of the second fixed-thickness rollers 28.
As an embodiment of the utility model relates to a there is child self-adhesion polymer modified asphalt waterproofing membrane's production system, air-cooling box 6 includes a plurality of rows of parallel arrangement's cold wind sword 30, cold wind sword 30 is to the reversal 37 advancing direction slopes to set up of coiled material to it is reverse to form 37 advancing direction cold wind air current of coiled material.
Further, the angle between the cold air knife 30 and the direction opposite to the advancing direction of the coiled material 37 is 135 degrees.
Further, the width of the cold air knife 30 is greater than or equal to the width of the coiled material 37, and the length of the air cooling box 6 is 1 m.
Further, the number of the cold air knives 30 is 10.
As an embodiment of the utility model relates to a there is child self-adhesion polymer modified asphalt waterproofing membrane's production system, lower surface tectorial membrane unit 7 includes barrier film 31 down, follows first nip roll 32 and the first tectorial membrane roller 33 that barrier film 31 direction of advance set gradually down, first tectorial membrane roller 33 with coiled material 37 is tangent.
The lower isolation film 31 is a peelable isolation film with silicone oil.
As an embodiment of the production system of the self-adhesive polymer modified asphalt waterproof roll with a tire of the present invention, the upper surface film covering unit 11 includes an upper isolation film 34, a second flattening roller 35 and a second film covering roller 36 sequentially arranged along the advancing direction of the upper isolation film 34, and the second film covering roller 36 is tangent to the roll 37; the second film coating roller 36 is arranged above the second water cooling bed 8 and close to one end of the coiled material winding frame 9.
Further, the upper isolation film 34 is made of a PE film, fine sand or a peelable isolation film with silicone oil.
As an embodiment of the utility model relates to a there is child self-adhesion polymer modified asphalt waterproofing membrane's production system, according to coiled material 37 advancing direction, first nip roll 32 set up in the place ahead of first tectorial membrane roller 33, according to coiled material 37 advancing direction, second nip roll 35 set up in the rear of second tectorial membrane roller 36. That is, the traveling direction of the lower separator 31 at the stage of the first nip roller 32 to the first laminating roller 33 is opposite to the traveling direction of the web 37, and the traveling direction of the upper separator 34 at the stage of the second nip roller 35 to the second laminating roller 36 is the same as the traveling direction of the web 37.
The production process for producing the filled self-adhesive polymer modified asphalt waterproof roll 37 by using the production system specifically comprises the following steps:
step 1, base unfolding
Placing the tire base 38 on a tire base unfolding frame 1 for uncoiling, and introducing the tire base to a production line to ensure that a joint is flat and aligned;
step 2, presoaking and one-time oiling
After the base 38 is unfolded, the base enters a pre-soaking oil tank 12, the temperature of pre-soaking oil is regulated at 190-200 ℃ to ensure that the base 38 is thoroughly soaked, when the base 38 is pre-soaked, the base is squeezed through a squeezing roller set, two squeezing rollers 15 are parallel to each other, squeezing air pressure of 0.4MPa is approximately applied to squeeze the base, when the soaked base 38 is squeezed, the base enters a first oil coating tank 17, a first rotating roller 20 brings oil in the first oil coating tank 17 to the lower surface of a base coiled material for lower surface oil coating, a first material pump 18 pumps oil to the upper part of the coiled material 37 for upper surface oil coating to ensure that both the upper surface and the lower surface are coated with oil and coated with covering materials, namely the first oil coating is completed, and the temperature of the covering materials is controlled at 165-175 ℃;
step 3, cooling by a water cooling bed
After the first oiling, the coiled material enters a first water cooling bed 4, the lower surface of the coiled material 37 is in contact with the upper surface of cooling liquid to carry out first water cooling bed cooling, and the temperature of the water cooling bed is controlled to be 30-50 ℃;
step 4, secondary oiling
After the self-adhesive coiled material 37 is cooled by the first water cooling bed 4, the water on the lower surface of the coiled material 37 is dried by the sponge roller 22 and the hot air knife 23, and then the self-adhesive coiled material enters the second oil coating pool 25 for secondary oil coating, wherein the temperature of the coating cover material is controlled at 165-175 ℃;
After the self-adhesive coiled material 37 is oiled for the second time, cooling is immediately carried out by using an air cooling box 6 device, the width of the air cooling box 6 is 1m, the length of the air cooling box is 1m, 10 rows of cold air knives 30 are arranged in parallel, the cold air temperature of the cold air knives 30 is controlled to be 10-15 ℃, the angle is set in a mode of reversing the advancing direction of the coiled material 37 to be 135 degrees, and the surface temperature of the coiled material 37 can be reduced to be below 70 ℃ through cooling of the air cooling box 6;
step 6, coating a film on the lower surface
The self-adhesive coiled material 37 is immediately coated with a strippable isolating film with silicone oil on the lower surface after being cooled by the air cooling box 6, and the coating temperature of the lower surface is reduced to below 70 ℃ under the action of the air cooling box 6 in the step 5;
After the lower surface of the self-adhesive coiled material 37 is coated with the film, the self-adhesive coiled material enters a second water cooling bed 8 to be continuously cooled, and the water temperature is controlled to be 30-50 ℃; after the coiled material 37 reaches the middle part of the second water-cooling bed 8, according to the product requirement, covering a PE film, fine sand or a strippable isolating film with silicone oil on the upper surface of the coiled material 37, and then coiling the coiled material on a coiled material coiling frame 9;
The coiled material 37 can be automatically conveyed to a packaging position after being rolled, and is automatically packaged and tidily by a thermoplastic packaging machine.
The above-described embodiments are merely preferred examples of the present invention and are not exhaustive of the possible implementations of the present invention. Any obvious modifications to the above would be obvious to those of ordinary skill in the art, but would not bring the invention so modified beyond the spirit and scope of the present invention.
Claims (10)
1. The utility model provides a have child self-adhesion polymer modified asphalt waterproofing membrane's production system, its characterized in that includes child base expansion frame (1), preimpregnation unit (2), first fat liquoring unit (3), first water-cooling bed (4), second fat liquoring unit (5), air-cooled case (6), lower surface tectorial membrane unit (7), second water-cooling bed (8), upper surface tectorial membrane unit (11), coiled material rolling frame (9) and baling press (10) that set gradually along coiled material (37) direction of motion.
2. A production system of self-adhesive polymer modified asphalt waterproofing coiled material with tire according to claim 1, characterized in that the pre-soaking unit (2) comprises a pre-soaking oil pool (12), and a first guide roller (13), a second guide roller (14), a squeezing roller group and a third guide roller (16) which are arranged in sequence along the moving direction of the coiled material (37).
3. The production system of self-adhesive polymer modified asphalt waterproof coiled material with a tire as claimed in claim 1, wherein the first oiling unit (3) comprises a first oiling tank (17), a first material-applying pump (18), a fourth guide roller (19), a first rotating roller (20) and a first fixed-thickness roller set in sequence along the moving direction of the coiled material (37), the material inlet of the first material-applying pump (18) is communicated with the first oiling tank (17) through a pipeline, and the material outlet of the first material-applying pump (18) is arranged above the coiled material (37).
4. The production system of the self-adhesive polymer modified asphalt waterproof roll with the tire as claimed in claim 1, wherein a sponge roller (22), a hot air knife (23) and a carrier roller (24) are further arranged between the first water-cooling bed (4) and the second oiling unit (5), the hot air knife (23) is arranged in an inclined manner in a direction opposite to the advancing direction of the roll (37), and the carrier roller (24) is arranged next to the second oiling unit (5).
5. The production system of the self-adhesive polymer modified asphalt waterproof roll with the tire as claimed in claim 1, wherein the second oiling unit (5) comprises a second oiling tank (25), a second material pumping pump (26), a second rotating roller (27) and a second fixed-thickness roller set sequentially arranged along the moving direction of the roll (37), the material inlet of the second material pumping pump (26) is communicated with the second oiling tank (25) through a pipeline, and the material outlet of the second material pumping pump (26) is arranged above the roll (37).
6. The production system of the self-adhesive polymer modified asphalt waterproof roll with the tire as claimed in claim 1, wherein the air cooling box (6) comprises a plurality of rows of cold air knives (30) arranged in parallel, and the cold air knives (30) are arranged in an inclined manner in a direction opposite to the advancing direction of the roll (37).
7. A production system for a self-adhesive polymer modified asphalt waterproof roll with a tire as claimed in claim 6, wherein the included angle between the cold air knife (30) and the direction opposite to the advancing direction of the roll (37) is 135 degrees.
8. A production system of self-adhesive polymer modified asphalt waterproofing membrane with tire according to claim 6, characterized in that the width of the cold air knife (30) is greater than or equal to the width of the membrane (37), and the length of the air cooling box (6) is 1 meter.
9. A production system of self-adhesive polymer modified asphalt waterproofing membrane with tire according to claim 1, characterized in that the lower surface film covering unit (7) comprises a lower isolation film (31), a first flattening roller (32) and a first film covering roller (33) which are arranged in sequence along the advancing direction of the lower isolation film (31).
10. A production system of self-adhesive polymer modified asphalt waterproof roll with a tire according to claim 1, wherein the upper surface film covering unit (11) comprises an upper isolation film (34), a second flattening roller (35) and a second film covering roller (36) which are sequentially arranged along the advancing direction of the upper isolation film (34), and the second film covering roller (36) is arranged above the second water cooling bed (8) and close to one end of the roll winding frame (9).
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922483085.4U CN211972202U (en) | 2019-12-31 | 2019-12-31 | Production system of modified asphalt waterproof roll material with tire self-adhesive polymer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922483085.4U CN211972202U (en) | 2019-12-31 | 2019-12-31 | Production system of modified asphalt waterproof roll material with tire self-adhesive polymer |
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| CN211972202U true CN211972202U (en) | 2020-11-20 |
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| CN201922483085.4U Active CN211972202U (en) | 2019-12-31 | 2019-12-31 | Production system of modified asphalt waterproof roll material with tire self-adhesive polymer |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112829418A (en) * | 2021-01-20 | 2021-05-25 | 深圳市卓宝科技股份有限公司 | Waterproof and heat-insulating integrated plate and construction process and online composite production process thereof |
| CN113771382A (en) * | 2021-09-15 | 2021-12-10 | 江苏凯伦建材股份有限公司 | Production method of waterproof coiled material |
-
2019
- 2019-12-31 CN CN201922483085.4U patent/CN211972202U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112829418A (en) * | 2021-01-20 | 2021-05-25 | 深圳市卓宝科技股份有限公司 | Waterproof and heat-insulating integrated plate and construction process and online composite production process thereof |
| CN113771382A (en) * | 2021-09-15 | 2021-12-10 | 江苏凯伦建材股份有限公司 | Production method of waterproof coiled material |
| CN113771382B (en) * | 2021-09-15 | 2023-02-17 | 江苏凯伦建材股份有限公司 | Production method of waterproof roll |
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