CN203668296U - Heat-shrinkable tape for pipeline joint coating - Google Patents
Heat-shrinkable tape for pipeline joint coating Download PDFInfo
- Publication number
- CN203668296U CN203668296U CN201320623640.9U CN201320623640U CN203668296U CN 203668296 U CN203668296 U CN 203668296U CN 201320623640 U CN201320623640 U CN 201320623640U CN 203668296 U CN203668296 U CN 203668296U
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- unvulcanized rubber
- waterproof glue
- glue line
- heat
- rubber class
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Abstract
The utility model relates to a heat-shrinkable tape for a pipeline joint coating, and belongs to the technical field of pipelines for petroleum, natural gas, heating power and the like. A hot melt adhesive layer is adhered on the surface of an irradiated crosslinked polyethylene substrate, and a left unvulcanized rubber waterproof adhesive layer and a right unvulcanized rubber waterproof adhesive layer are adhered on two sides of the surface of the hot melt adhesive layer respectively and are at a 200-300 mm distance. The heat-shrinkable tape has the advantages that the water resisting property of the heat-shrinkable tape joint coating is improved by means of holding power and waterproof actions of unvulcanized rubber waterproof adhesive while the soil stress resistance of the heat-shrinkable tape joint coating is kept, so that reliability of the heat-shrinkable tape is improved.
Description
Technical field
The utility model relates to a kind of joint coating on pipeline shrink belt, belongs to the pipe technology fields such as oil, Sweet natural gas, heating power.
Background technology
Along with China's economy continue, fast-developing, the status of steel pipe in daily life and economic construction such as oil, Sweet natural gas, heating power are more important.For ensureing the safe operation of steel pipe, it is particularly crucial that the quality of pipeline anticorrosion coating repaired mouth seems.
At present pipeline anticorrosion coating opening-supplementing material adopts shrink belt (cover) more, and it is made up of epoxy primer, fixed plate, hot melt adhesive, IXPE base material, and hot melt adhesive and polyethylene base material are pasted together by the compound mode of hot pressing.
In field joint construction process, first epoxy primer is coated with and installs to repaired mouth position, then wrap up shrink belt, and utilize fixed plate that shrink belt two ends are bonded together, then make shrink belt be retracted to mouth of pipe surface by type of heating.Due to the water tolerance deficiency of existing repaired mouth, after pipeline During Process of Long-term Operation, along with the immersion of aqueous vapor, shrink belt repaired mouth coating has more now inharmonious failure phenomenon, and causes pipeline to corrode.
Summary of the invention
In order to overcome the deficiencies in the prior art, the utility model provides a kind of joint coating on pipeline shrink belt.For improving the water tolerance of shrink belt repaired mouth coating, adopt unvulcanized rubber class waterproof glue to seal shrink belt.
A kind of joint coating on pipeline shrink belt, the surface bonding of IXPE base material has hot melt adhesive layer, the surperficial both sides of hot melt adhesive layer are bonded with respectively left unvulcanized rubber class Waterproof glue line, right unvulcanized rubber class Waterproof glue line connects, and left unvulcanized rubber class Waterproof glue line and right unvulcanized rubber class Waterproof glue line are apart 200-300mm.
Unvulcanized rubber has good lasting adhesive property and water-repellancy, it is widely used in water-proof material, unvulcanized rubber class waterproof glue sticks on the surface of shrink belt containing glue one side, in repaired mouth process, can seal shrink belt repaired mouth coating formation, thus the water resistance of raising shrink belt repaired mouth coating.Because unvulcanized rubber class waterproof glue softness, intensity are low, if shrink belt is containing glue one side surface paste List unvulcanized rubber class waterproof glue, the anti-soil stress performance of shrink belt repaired mouth coating is low, shrink belt can produce wrinkling and cause repaired mouth coating to lose efficacy because of soil stress, therefore according to the specification of shrink belt, unvulcanized rubber class waterproof glue sticks on shrink belt containing the part or all of surface beyond glue one side central zone 200mm～300mm, utilize remaining hot melt adhesive region, keep the performance of the anti-soil stress of shrink belt.
The utility model has the advantages that in keeping the anti-soil stress performance of shrink belt repaired mouth coating, that utilizes unvulcanized rubber class waterproof glue holds viscosity and waterproof action, improve the water tolerance of shrink belt repaired mouth coating, thereby improved the reliability of shrink belt.
Brief description of the drawings
When considered in conjunction with the accompanying drawings, by the detailed description with reference to below, can more completely understand better the utility model and easily learn wherein many advantages of following, but accompanying drawing described herein is used to provide further understanding of the present utility model, form a part of the present utility model, schematic description and description of the present utility model is used for explaining the utility model, do not form improper restriction of the present utility model, as schemed wherein:
Fig. 1 is the orthographic plan of a kind of shrink belt of the present utility model containing glue one side;
Fig. 2 is the sectional view of shrink belt shown in Fig. 1;
Fig. 3 a kind of shrink belt of the present utility model is containing the orthographic plan of glue one side;
Fig. 4 is the side-view of shrink belt shown in Fig. 3;
Below in conjunction with drawings and Examples, the utility model is further illustrated.
Embodiment
Obviously the many modifications and variations that, those skilled in the art do based on aim of the present utility model belong to protection domain of the present utility model.
Embodiment 1: as shown in Figure 1, Figure 2, Figure 3 and Figure 4, a kind of joint coating on pipeline shrink belt, the surface of polyethylene base material 3 has hot melt adhesive layer 2 bonding, the surface of hot melt adhesive layer 2 has left unvulcanized rubber class Waterproof glue line 4, right unvulcanized rubber class Waterproof glue line 1 bonding, left unvulcanized rubber class Waterproof glue line 4, right unvulcanized rubber class Waterproof glue line 1 are respectively in the surperficial both sides of hot melt adhesive layer 2, and left unvulcanized rubber class Waterproof glue line 4 is 200-300mm with right unvulcanized rubber class Waterproof glue line 1 at a distance of a.
Hot melt adhesive layer 2 hot pressing are compound on the wide polyethylene base material 3 of the 540mm of cross-linking radiation, then utilize forcing machine left unvulcanized rubber class Waterproof glue line 4 thick 0.5mm, right unvulcanized rubber class Waterproof glue line 1 are bonded in apart from polyethylene base material 3 edge 100mm to the region at edge in hot melt adhesive 2 surfaces, then carry out the cutting of shrink belt by existing specification, packaging.
Hot melt adhesive layer 2 hot pressing are compound on the wide polyethylene base material 3 of the 470mm of cross-linking radiation, and left unvulcanized rubber class Waterproof glue line 4, right unvulcanized rubber class Waterproof glue line 1 are that unvulcanised butyl rubber belt is replaced.
Unvulcanised butyl rubber belt wide thick 1mm 10mm is sticked on hot melt adhesive layer, and butyl rubber belt, apart from more than the edge 10mm of polyethylene base material 3, carries out the cutting of shrink belt by existing specification, packaging.
As mentioned above, embodiments of the invention are explained, but as long as not departing from fact inventive point of the present invention and effect can have a lot of distortion, this will be readily apparent to persons skilled in the art.Therefore, within such variation is also all included in protection scope of the present invention.
Claims (3)
1. a joint coating on pipeline shrink belt, the surface bonding that it is characterized in that IXPE base material has hot melt adhesive layer, the surperficial both sides of hot melt adhesive layer are bonded with respectively left unvulcanized rubber class Waterproof glue line, right unvulcanized rubber class Waterproof glue line connects, and left unvulcanized rubber class Waterproof glue line and right unvulcanized rubber class Waterproof glue line are apart 200-300mm.
2. a kind of joint coating on pipeline shrink belt according to claim 1, is characterized in that left unvulcanized rubber class Waterproof glue line, right left unvulcanized rubber class Waterproof glue line are respectively more than the edge 10mm apart from polyethylene base material.
3. a kind of joint coating on pipeline shrink belt according to claim 1 and 2, is characterized in that left unvulcanized rubber class Waterproof glue line, right unvulcanized rubber class Waterproof glue line are butyl rubber belt.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320623640.9U CN203668296U (en) | 2013-10-10 | 2013-10-10 | Heat-shrinkable tape for pipeline joint coating |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320623640.9U CN203668296U (en) | 2013-10-10 | 2013-10-10 | Heat-shrinkable tape for pipeline joint coating |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203668296U true CN203668296U (en) | 2014-06-25 |
Family
ID=50964612
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320623640.9U Expired - Fee Related CN203668296U (en) | 2013-10-10 | 2013-10-10 | Heat-shrinkable tape for pipeline joint coating |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203668296U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110922689A (en) * | 2019-12-13 | 2020-03-27 | 中国科学院长春应用化学研究所 | Butyl adhesive tape covered with hot melt adhesive film and preparation method thereof |
-
2013
- 2013-10-10 CN CN201320623640.9U patent/CN203668296U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110922689A (en) * | 2019-12-13 | 2020-03-27 | 中国科学院长春应用化学研究所 | Butyl adhesive tape covered with hot melt adhesive film and preparation method thereof |
| CN110922689B (en) * | 2019-12-13 | 2020-10-23 | 中国科学院长春应用化学研究所 | Butyl adhesive tape covered with hot melt adhesive film and preparation method thereof |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140625 Termination date: 20141010 |
|
| EXPY | Termination of patent right or utility model |