CN203442349U - Polyethylene water supply pipe material for trenchless construction - Google Patents
Polyethylene water supply pipe material for trenchless construction Download PDFInfo
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- CN203442349U CN203442349U CN201320523629.5U CN201320523629U CN203442349U CN 203442349 U CN203442349 U CN 203442349U CN 201320523629 U CN201320523629 U CN 201320523629U CN 203442349 U CN203442349 U CN 203442349U
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Abstract
The utility model provides a polyethylene water supply pipe material for trenchless construction. The polyethylene water supply pipe material comprises an outer reinforcing layer and an inner raw material layer, wherein the outer reinforcing layer is made of reinforced modified polyethylene, and the inner raw material layer is made of pure polyethylene. The outer reinforcing layer is of a hollow pipe shape, and the inner raw material layer completely covers the inner wall of the outer reinforcing layer. The ratio of the thickness of the inner raw material layer to the thickness of the outer reinforcing layer is 1:3-1:5. According to the polyethylene water supply pipe material for trenchless construction, the thin inner raw material layer made of pure polyethylene is arranged on the inner wall of the outer reinforcing layer, the inner raw material layer is safe, free of migration, and can prevent an antioxidant, an activating agent and other auxiliaries in the outer reinforcing layer from migrating inwards, and it is guaranteed that water is clean and safe. Consequently the pipe material can meet the requirement of trenchless construction for ring stiffness and tensile strength, and can also meet the requirement of drinking water conveying for the safety performance.
Description
Technical field
The utility model belongs to polyethylene water-feeding pipes field, is specifically related to a kind of polyethylene water-feeding pipes for non-excavating construction.
Background technique
Pipe-line system is the lifeblood in cities and towns, and especially water supply and sewage pipe network, directly has influence on daily life and production.Along with the development of urbanization process and the propelling of rural safe water works, the application of water-feeding pipes is more and more extensive, and that most pipeline is embedded in is underground, especially when needs pass through road, building, green belt, river and original pipe network.Destroyed for fear of original building on ground and facility, people have more selected no-excavation construction method, and this also has higher requirement to the performance of tubing itself.
Because polyethylene pipe has good performance at aspects such as flexible, toughness, wear resistance and anti-fast open fragilities, so what in no-excavation construction method, generally adopt is polyethylene water-feeding pipes.Application number is that 200910254296.9 Chinese invention patent discloses a kind of polyethylene water-feeding pipes for non-excavating construction, it is mainly the polyvinyl piping materials by adding a certain proportion of atactic copolymerized polypropene in polyethylene raw material, preparing through mixing, granulation, extruding forming method without boron alkali-free glass fiber and specific auxiliary agent, this pipe ring stiffness, tensile strength improve a lot compared with common polythene water-feeding pipes, special for being applicable to non-excavating construction, avoid tubing drawn flat or break in construction.But this polyethylene water-feeding pipes contains a part of auxiliary agent, while using for a long time, auxiliary agent has part and moves in the water in pipe, affects water quality.
Model utility content
The utility model, for above-mentioned the deficiencies in the prior art, provides a kind of polyethylene water-feeding pipes for non-excavating construction that can guarantee that water quality is clean, safe.
The utility model is achieved by the following technical solution:
A polyethylene water-feeding pipes for non-excavating construction, comprises the interior raw material layer that an outer reinforced layer and of being made by enhancing modified poly ethylene is made by pure polyethylene, and described outer reinforced layer is hollow tubular, and described interior raw material layer covers the inwall of outer reinforced layer completely; The thickness proportion of described interior raw material layer and outer reinforced layer is 1:3～1:5.
Further setting of the present utility model is, described outer reinforced layer and interior raw material layer are completely bonding by coextrusion mold.
Polyethylene water-feeding pipes for non-excavating construction described in the utility model is provided with the interior raw material layer that skim is made by pure polyethylene on the inwall of reinforced layer outside, this interior raw material layer safety is non-migratory, also can stop the auxiliary agents such as middle antioxidant, activator of outer reinforced layer inwardly to move simultaneously, guarantee that water quality is clean, safety.So tubing described in the utility model can meet non-excavating construction for the requirement of ring stiffness and tensile strength, can meet again potable water and carry the requirement for Safety performance.
Accompanying drawing explanation
Fig. 1 is the sectional view of polyethylene water-feeding pipes described in the utility model.
Embodiment
Below in conjunction with the drawings and specific embodiments, the utility model is described in more detail.
As shown in Figure 1, the utility model provides a kind of polyethylene water-feeding pipes for non-excavating construction, comprise the interior raw material layer 3 that an outer reinforced layer 1 and of being made by enhancing modified poly ethylene is made by pure polyethylene, described outer reinforced layer 1 is hollow tubular, and inside is provided with cavity 2; Described interior raw material layer 3 covers the inwall of outer reinforced layer 1 completely.Because interior raw material layer 3 mainly plays iris action, so it is only skim, described interior raw material layer 3 is 1:3～1:5 with the thickness proportion of outer reinforced layer 1.Wherein, in the Chinese invention patent that outer reinforced layer 1 is 200910254296.9 with application number, disclosed polyethylene water-feeding pipes is identical.
Described outer reinforced layer 1 is completely bonding by coextrusion mold when producing with interior raw material layer 3, meanwhile, because outer reinforced layer 1 and the base-material of interior raw material layer 3 are all polyethylene, thermal expansion coefficient is the same, therefore inside and outside two-layer can be completely bonding, can when the temperature difference is large, there is not the situations such as layering.
It is apparent to one skilled in the art that the utility model can be changed into various ways, and such change is not thought and departed from scope of the present utility model.All so apparent modifications of the technician to described field, within being included in the scope of this claim.
Claims (2)
1. the polyethylene water-feeding pipes for non-excavating construction, comprise the interior raw material layer that an outer reinforced layer and of being made by enhancing modified poly ethylene is made by pure polyethylene, described outer reinforced layer is hollow tubular, and described interior raw material layer covers the inwall of outer reinforced layer completely; The thickness proportion of described interior raw material layer and outer reinforced layer is 1:3～1:5.
2. the polyethylene water-feeding pipes for non-excavating construction according to claim 1, is characterized in that, described outer reinforced layer and interior raw material layer are completely bonding by coextrusion mold.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320523629.5U CN203442349U (en) | 2013-08-26 | 2013-08-26 | Polyethylene water supply pipe material for trenchless construction |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320523629.5U CN203442349U (en) | 2013-08-26 | 2013-08-26 | Polyethylene water supply pipe material for trenchless construction |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203442349U true CN203442349U (en) | 2014-02-19 |
Family
ID=50093406
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320523629.5U Expired - Fee Related CN203442349U (en) | 2013-08-26 | 2013-08-26 | Polyethylene water supply pipe material for trenchless construction |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203442349U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108623887A (en) * | 2018-05-28 | 2018-10-09 | 宜昌宜硕塑业有限公司 | A kind of wear-resisting no-dig technique tubing of ultra-toughness |
-
2013
- 2013-08-26 CN CN201320523629.5U patent/CN203442349U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108623887A (en) * | 2018-05-28 | 2018-10-09 | 宜昌宜硕塑业有限公司 | A kind of wear-resisting no-dig technique tubing of ultra-toughness |
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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: 20140219 Termination date: 20160826 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |