CN106194217A - Back sticking type in buried CPE plastics waterstop and processing method - Google Patents
Back sticking type in buried CPE plastics waterstop and processing method Download PDFInfo
- Publication number
- CN106194217A CN106194217A CN201610653418.1A CN201610653418A CN106194217A CN 106194217 A CN106194217 A CN 106194217A CN 201610653418 A CN201610653418 A CN 201610653418A CN 106194217 A CN106194217 A CN 106194217A
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- Prior art keywords
- waterstop
- cpe
- self
- processing method
- fin
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- 239000004033 plastic Substances 0.000 title claims abstract description 21
- 229920003023 plastic Polymers 0.000 title claims abstract description 21
- 238000003672 processing method Methods 0.000 title claims abstract description 12
- 239000000853 adhesive Substances 0.000 claims abstract description 13
- 239000003292 glue Substances 0.000 claims abstract description 11
- 238000003466 welding Methods 0.000 claims description 8
- 239000000463 material Substances 0.000 claims description 7
- 239000012760 heat stabilizer Substances 0.000 claims description 6
- 239000004014 plasticizer Substances 0.000 claims description 6
- 239000011347 resin Substances 0.000 claims description 4
- 229920005989 resin Polymers 0.000 claims description 4
- 239000005995 Aluminium silicate Substances 0.000 claims description 3
- 239000004593 Epoxy Substances 0.000 claims description 3
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 3
- 235000012211 aluminium silicate Nutrition 0.000 claims description 3
- UQLDLKMNUJERMK-UHFFFAOYSA-L di(octadecanoyloxy)lead Chemical group [Pb+2].CCCCCCCCCCCCCCCCCC([O-])=O.CCCCCCCCCCCCCCCCCC([O-])=O UQLDLKMNUJERMK-UHFFFAOYSA-L 0.000 claims description 3
- NLYAJNPCOHFWQQ-UHFFFAOYSA-N kaolin Chemical compound O.O.O=[Al]O[Si](=O)O[Si](=O)O[Al]=O NLYAJNPCOHFWQQ-UHFFFAOYSA-N 0.000 claims description 3
- UMKARVFXJJITLN-UHFFFAOYSA-N lead;phosphorous acid Chemical compound [Pb].OP(O)O UMKARVFXJJITLN-UHFFFAOYSA-N 0.000 claims description 3
- 238000000465 moulding Methods 0.000 claims description 3
- 239000002994 raw material Substances 0.000 claims description 3
- 230000002787 reinforcement Effects 0.000 claims description 3
- 239000012744 reinforcing agent Substances 0.000 claims description 3
- 235000012424 soybean oil Nutrition 0.000 claims description 3
- 239000003549 soybean oil Substances 0.000 claims description 3
- -1 benzene Dioctyl phthalate dioctyl ester Chemical class 0.000 claims description 2
- 239000012790 adhesive layer Substances 0.000 claims 1
- 239000006229 carbon black Substances 0.000 claims 1
- 239000010410 layer Substances 0.000 claims 1
- 239000012528 membrane Substances 0.000 abstract description 11
- 238000010276 construction Methods 0.000 abstract description 10
- 238000000034 method Methods 0.000 abstract description 9
- 230000032683 aging Effects 0.000 abstract description 6
- 238000005516 engineering process Methods 0.000 abstract description 6
- 238000005476 soldering Methods 0.000 abstract description 5
- 210000004243 sweat Anatomy 0.000 abstract description 5
- 241000168254 Siro Species 0.000 abstract description 2
- 239000002253 acid Substances 0.000 abstract description 2
- 150000007513 acids Chemical class 0.000 abstract description 2
- 238000009987 spinning Methods 0.000 abstract description 2
- 230000001680 brushing effect Effects 0.000 abstract 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 9
- 238000007789 sealing Methods 0.000 description 8
- 230000000694 effects Effects 0.000 description 6
- 230000006872 improvement Effects 0.000 description 5
- 230000008569 process Effects 0.000 description 5
- 239000008393 encapsulating agent Substances 0.000 description 4
- 230000008595 infiltration Effects 0.000 description 3
- 238000001764 infiltration Methods 0.000 description 3
- MQIUGAXCHLFZKX-UHFFFAOYSA-N Di-n-octyl phthalate Natural products CCCCCCCCOC(=O)C1=CC=CC=C1C(=O)OCCCCCCCC MQIUGAXCHLFZKX-UHFFFAOYSA-N 0.000 description 2
- 239000000654 additive Substances 0.000 description 2
- BJQHLKABXJIVAM-UHFFFAOYSA-N bis(2-ethylhexyl) phthalate Chemical group CCCCC(CC)COC(=O)C1=CC=CC=C1C(=O)OCC(CC)CCCC BJQHLKABXJIVAM-UHFFFAOYSA-N 0.000 description 2
- 230000008859 change Effects 0.000 description 2
- 230000007797 corrosion Effects 0.000 description 2
- 238000005260 corrosion Methods 0.000 description 2
- 230000007547 defect Effects 0.000 description 2
- 230000007123 defense Effects 0.000 description 2
- 238000006073 displacement reaction Methods 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 229920002521 macromolecule Polymers 0.000 description 2
- 238000004078 waterproofing Methods 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 230000004888 barrier function Effects 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 230000006378 damage Effects 0.000 description 1
- 230000004927 fusion Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000004513 sizing Methods 0.000 description 1
- 238000005987 sulfurization reaction Methods 0.000 description 1
Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D11/00—Lining tunnels, galleries or other underground cavities, e.g. large underground chambers; Linings therefor; Making such linings in situ, e.g. by assembling
- E21D11/38—Waterproofing; Heat insulating; Soundproofing; Electric insulating
- E21D11/385—Sealing means positioned between adjacent lining members
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L23/00—Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers
- C08L23/26—Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers modified by chemical after-treatment
- C08L23/28—Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers modified by chemical after-treatment by reaction with halogens or compounds containing halogen
- C08L23/286—Chlorinated polyethylene
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D29/00—Independent underground or underwater structures; Retaining walls
- E02D29/16—Arrangement or construction of joints in foundation structures
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D11/00—Lining tunnels, galleries or other underground cavities, e.g. large underground chambers; Linings therefor; Making such linings in situ, e.g. by assembling
- E21D11/38—Waterproofing; Heat insulating; Soundproofing; Electric insulating
- E21D11/383—Waterproofing; Heat insulating; Soundproofing; Electric insulating by applying waterproof flexible sheets; Means for fixing the sheets to the tunnel or cavity wall
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P20/00—Technologies relating to chemical industry
- Y02P20/141—Feedstock
Landscapes
- Engineering & Computer Science (AREA)
- Structural Engineering (AREA)
- Mining & Mineral Resources (AREA)
- Chemical & Material Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Civil Engineering (AREA)
- Geochemistry & Mineralogy (AREA)
- Geology (AREA)
- Architecture (AREA)
- Paleontology (AREA)
- General Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- General Chemical & Material Sciences (AREA)
- Health & Medical Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Organic Chemistry (AREA)
- Building Environments (AREA)
- Lining And Supports For Tunnels (AREA)
Abstract
The present invention provide a kind of back sticking type in buried CPE plastics waterstop and processing method, concrete, described CPE waterstop includes waterstop body, multiple fin it is provided with on described waterstop, it is provided with self-adhesive glue layer between the outer surface of described fin and two fins, use novel processing technique, can produce and there is the excellent ageing-resistant of the good pliability of rubber fastening band and plastics waterstop simultaneously, weatherability, the CPE self-adhering type waterstop of resistance to acids and bases, by brushing Macromolecular self-adhesive membrane on waterstop top layer, make waterstop and concrete, waterstop is well bonded together with splash guard, sweat soldering can be passed through, realize waterstop and waterstop quickly and easily, waterstop and the compact siro spinning technology of splash guard, convenient and quick construction, effectively solve the problem that waterstop joint area leaks.
Description
Technical field
The invention belongs to build sealing waterproofing work technology, relate to a kind of back sticking type in buried CPE plastics waterstop and
Processing method, is mainly used in the engineerings such as vcehicular tunnel, railway tunnel, subway, civil air defense constructions and installations, hypogee, plays sealing
Waterproof action
Background technology
Waterstop encapsulant should have preferable caking property, elasticity and an ageing resistance, for a long time through Tensile and vibrate tired
Labor etc., remain to keep good waterproof effect.Waterstop encapsulant should meet following performance requirement:
(1) there is good pliability, adapt to seam displacement and keep the deflection effectively sealed；
(2) seam displacement process does not produce bond damage and cohesional failure.Waterstop can be divided into according to material at present: rubber
Glue waterstop, plastics waterstop.Waterstop is widely used in various types of xoncrete structure, such as checkdam, cistern,
In the underground engineerings such as subway, culvert, tunnel.In some architectural engineerings, due to can not continuous placing, or due to the change of ground
Shape, or the reason such as expand with heat and contract with cold of the concrete component caused due to variations in temperature, cause pour often leave movement joint,
Construction joint, and these movement joints, construction joint would generally cause structural leakage, in order to prevent because of construction joint, deformation joint seepage, at this
Position uses waterstop encapsulant.
(3) rubber fastening band is complex because of scene overlap joint with waterstop joint area, causes to exist in work progress and glues
Connect the problem such as loosely, cause water seepage.
The inefficacy of waterstop encapsulant and the material of waterstop itself, structure type have the biggest relation.Main cause
Have: the weatherability of (1) waterstop, ageing-resistant performance are poor, cause seal failure；(2) between waterstop and works " three seams "
There is bonding, the occlusion problem such as loosely, under external environment and External Force Acting, easily cause seal failure；(3) works is outside
Under the effect such as boundary's circumstance of temperature difference, settlement, cause the distortion of waterstop, deformation, thus lost efficacy.
At present, in the engineerings such as vcehicular tunnel, railway tunnel, subway, civil air defense constructions and installations, hypogee, in order to prevent water from oozing
Leakage, commonly used rubber fastening band and plastics waterstop.And because the different material of two kinds of waterstops causes each using
During defect in various degree.Rubber fastening band has good elasticity and pliability, can preferably be engaged, more with concrete
The good micro-deformation adapting to concrete, plays sealed waterproof effect, but, the ageing resistace of rubber fastening band is poor, makes
Become its service life short, have impact on itself excellent sealing, water resistance.And plastics waterstop has excellent weatherability
And corrosion resistance, but the material hardness of itself is higher, it is impossible to well adapt to the micro-deformation of concrete, sealed waterproof effect
Relatively poor.
Summary of the invention
It is an object of the invention to provide a kind of back sticking type in buried CPE plastics waterstop and processing method, solve anti-
In water, sealing field, rubber fastening band and the respective defect of plastics waterstop, solve the trace deformation due to concrete and sealing
Carry aging corrosion, cause concrete to produce, with waterstop faying face, the problem that gap causes infiltration；To the rubber that presently, there are only
The problems such as it is more difficult that water band overlapping part processes, Site Welding construction inconvenience have had the change of essence, breach CPE waterstop and use
The technology barriers that when expressing technique produces, sizing is difficult, are adjusted to expressing technique by CPE waterstop by original sulfuration process effective
Reduce production cost, the pollution to environment falls below minimum.
For solving above-mentioned technical problem, the present invention provides a kind of back sticking type CPE plastics waterstop, including waterstop body,
Being provided with multiple fin on described waterstop, described waterstop body both sides are provided with weld zone, the outer surface of described fin and
Being provided with self-adhesive glue layer between two fins, on described weld zone, thermofussion welding is connected to waterproof roll.
The present invention further provides buried CPE plastics waterstop in one, including waterstop body, described waterstop body
On be provided with multiple fin, described fin is obliquely installed, and is provided with self-adhesive between the outer surface of described fin and two fins
Layer, on described weld zone, thermofussion welding is connected to waterproof roll.
The present invention improves to be had, and the angle of inclination between described fin and waterstop body is 45 °.
For increasing the frictional force between self-adhesive glue layer and waterstop body, the surface configuration of above two waterstop has anti-skidding
Striped.
The present invention also provides for the processing method of a kind of CPE self-adhering type waterstop, comprises the following steps:
Step 1, by CPE resin 100 parts, plasticizer 30-60 part, heat stabilizer 5-10 part, reinforcement 20-40 part is put into double
Screw pelletizer；
Raw material is extruded by step 2, dual-screw pelletizer, and cools down molding by shaper.
As the improvement of the present invention, described plasticizer is dioctyl phthalate and epoxy soybean oil.
As the improvement of the present invention, described heat stabilizer is lead stearate and dibasic lead phosphite.
As the improvement of the present invention, described reinforcing agent is white carbon and Kaolin.
As the improvement of the present invention, the color of the CPE self-adhering type waterstop after processing be white, chlorinty at 10-45%,
Material hardness 60-90 Shao Er A/ degree.
The invention have the benefit that novel processing technique, can produce and there is good soft of rubber fastening band simultaneously
Toughness and excellent ageing-resistant, the CPE self-adhering type waterstop of weatherability, resistance to acids and bases of plastics waterstop, by sealing
Macromolecular self-adhesive membrane is brushed on band top layer, makes waterstop and concrete, and waterstop is well bonded together with splash guard, can pass through
Sweat soldering, realizes waterstop and waterstop quickly and easily, the compact siro spinning technology of waterstop and splash guard, convenient and quick construction,
Effectively solve the problem that waterstop joint area leaks.
Accompanying drawing explanation
Accompanying drawing 1 is the structural representation of the back sticking type CPE plastics waterstop of the present invention；
Accompanying drawing 2 is the structural representation of buried CPE plastics waterstop in the present invention；
Accompanying drawing illustrates: 1-waterstop body；2-fin；3-weld zone；4-self-adhesive glue layer.
Detailed description of the invention
By describing the technology contents of the present invention, structural feature in detail, being realized purpose and effect, below in conjunction with embodiment
And coordinate accompanying drawing to be explained in detail.
Referring to the drawings 1, the present invention provides a kind of back sticking type CPE plastics waterstop of improvement, including waterstop body 1, institute
Stating and be provided with multiple fin 2 on waterstop body 1, described waterstop body 1 both sides are provided with weld zone 3, outside described fin 2
Being provided with self-adhesive glue layer 4 between surface and two fins 2, on described weld zone 3, thermofussion welding is connected to waterproof roll.
Scribble self-adhesion glued membrane between fin 2 and fin 2, make concrete and waterstop main body being bonded together tightly, it is to avoid
Water seepage.Fin 2 side scribbles self-adhesion glued membrane, makes fin 2 and concrete bonding, so that waterstop and concrete bonding
Integral, prevent from, because trace deformation produces gap, preventing water seepage, weld zone 3, sweat soldering can be used or use self-adhesive glue layer
The mode of 4 is welded with waterproof roll or bonds together, and plays more preferable integral waterproofing, stagnant water effect, convenient and quick construction.
Referring to the drawings 2, the present invention further provides buried CPE plastics waterstop in one, including waterstop body 1, institute
Stating and be provided with multiple fin 2 on waterstop body 1, described fin 2 is obliquely installed, the outer surface of described fin 2 and two fins 2
Between be provided with self-adhesive glue layer 4, on described weld zone 3, thermofussion welding is connected to waterproof roll.
Compared with back sticking type CPE plastics waterstop, the fin 2 of middle buried water stop be tilt, this be due in buried
Waterstop fin 2 is relatively low, and in order to preferably make waterstop together with concrete bonding, special envoy, by this kind of structure, effectively carries
The high waterstop adhesive strength with concrete, reduces the gap caused because of the trace deformation of concrete, prevents infiltration.
Angle of inclination between described fin and waterstop body is 45 °, and specific angle can increase by force to greatest extent
Spend and prevent infiltration.
It is provided with anti-skidding striped on above two waterstop body, further increases waterstop body and self-adhesive glue layer
Frictional force.
The processing method of above-mentioned waterstop, specifically includes following steps:
Step 1, by CPE resin 100 parts, plasticizer 30-60 part, heat stabilizer 5-10 part, reinforcement 20-40 part is put into double
Screw pelletizer；
Raw material is extruded by step 2, dual-screw pelletizer, and cools down molding by shaper.
Concrete, described plasticizer is dioctyl phthalate and epoxy soybean oil,
Described heat stabilizer is lead stearate and dibasic lead phosphite.
Described reinforcing agent is white carbon and Kaolin.
Certainly, the selection of these additives, the present invention is also not particularly limited, as long as the specific of these additives can be realized
Function.
The color of the CPE self-adhering type waterstop after processing is white, and chlorinty is at 10-45%, material hardness 60-90 Shao Er
A/ degree.
Use extruding-out process, with double screw extruder by resin extruded for CPE pelletize, above two CPE plastics sealing
The site operation of band is quite convenient to, and directly with waterproof roll, waterstop is passed through sweat soldering, makes waterstop and waterproof roll
Conveniently welding, further, waterstop and waterstop field joint may be used without sweat soldering, exist weld interval
The 20-40 second, convenient and quick construction, solve the problem that rubber water-proof belt lacing easily leaks.
During use, will coat self-adhesion glued membrane between the fin 2 on waterstop body 1, described self-adhesion glued membrane is macromolecule heat
Fusion pressure sensitized self-adhering glued membrane, concrete, self-adhesion glued membrane is non-bituminous family macromolecule self-adhesion glued membrane, and self-adhesion glued membrane is imitated with concrete bonding
The most splendid, make good being bonded together of waterstop and concrete, self-adhesion glued membrane and the concrete on top layer, waterstop sealing district can be made
The two bonds together firmly, thus reaches the purpose of water-impervious.
The foregoing is only embodiments of the invention, not thereby limit the scope of the claims of the present invention, every utilize this
Equivalent structure or equivalence flow process that bright description and accompanying drawing content are made convert, or are directly or indirectly used in other relevant skills
Art field, is the most in like manner included in the scope of patent protection of the present invention.
Claims (7)
1. a back sticking type CPE plastics waterstop, it is characterised in that include being provided with on waterstop body, described waterstop many
Individual fin, described waterstop body both sides are provided with between weld zone, the outer surface of described fin and two fins and are provided with certainly
Adhesive-layer, on described weld zone, thermofussion welding is connected to waterproof roll.
2. buried CPE plastics waterstop in a kind, it is characterised in that include waterstop body, described waterstop body is arranged
There are multiple fin, described fin to be obliquely installed, between the outer surface of described fin and two fins, are provided with self-adhesive glue layer, described
On weld zone, thermofussion welding is connected to waterproof roll.
3. the processing method of a CPE self-adhering type waterstop, it is characterised in that comprise the following steps:
Step 1, by CPE resin 100 parts, plasticizer 30-60 part, heat stabilizer 5-10 part, reinforcement 20-40 part puts into twin screw
Comminutor；
Raw material is extruded by step 2, dual-screw pelletizer, and cools down molding by shaper.
The processing method of CPE self-adhering type waterstop the most according to claim 3, it is characterised in that described plasticizer is benzene
Dioctyl phthalate dioctyl ester and epoxy soybean oil.
The processing method of CPE self-adhering type waterstop the most according to claim 3, it is characterised in that described heat stabilizer is
Lead stearate and dibasic lead phosphite.
The processing method of CPE self-adhering type waterstop the most according to claim 3, it is characterised in that described reinforcing agent is white
White carbon black and Kaolin.
The processing method of CPE self-adhering type waterstop the most according to claim 3, it is characterised in that the CPE self-adhesion after processing
The color of formula waterstop is white, and chlorinty is at 10-45%, material hardness 60-90 Shao Er A/ degree.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610653418.1A CN106194217A (en) | 2016-08-10 | 2016-08-10 | Back sticking type in buried CPE plastics waterstop and processing method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610653418.1A CN106194217A (en) | 2016-08-10 | 2016-08-10 | Back sticking type in buried CPE plastics waterstop and processing method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106194217A true CN106194217A (en) | 2016-12-07 |
Family
ID=57514861
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610653418.1A Pending CN106194217A (en) | 2016-08-10 | 2016-08-10 | Back sticking type in buried CPE plastics waterstop and processing method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106194217A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106948844A (en) * | 2017-05-08 | 2017-07-14 | 谌成勋 | Waterstop and building structure |
| CN110984240A (en) * | 2019-11-19 | 2020-04-10 | 中冶天工集团有限公司 | Fixing device and fixing method for buried steel-edged rubber water stop in underground structure |
| CN113322804A (en) * | 2021-05-10 | 2021-08-31 | 中国铁路设计集团有限公司 | Single-face combined reverse-adhesion type back-attached water stop belt with simple structure |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106948844A (en) * | 2017-05-08 | 2017-07-14 | 谌成勋 | Waterstop and building structure |
| CN106948844B (en) * | 2017-05-08 | 2024-04-12 | 河北汇海橡塑材料股份有限公司 | Water stop and building structure |
| CN110984240A (en) * | 2019-11-19 | 2020-04-10 | 中冶天工集团有限公司 | Fixing device and fixing method for buried steel-edged rubber water stop in underground structure |
| CN113322804A (en) * | 2021-05-10 | 2021-08-31 | 中国铁路设计集团有限公司 | Single-face combined reverse-adhesion type back-attached water stop belt with simple structure |
| CN113322804B (en) * | 2021-05-10 | 2023-03-10 | 中国铁路设计集团有限公司 | Single-face combined reverse-adhesion type back-pasting water stop belt with simple structure |
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Application publication date: 20161207 |
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| RJ01 | Rejection of invention patent application after publication |