CN201884802U - Composite polyethylene pipe with low cost - Google Patents
Composite polyethylene pipe with low cost Download PDFInfo
- Publication number
- CN201884802U CN201884802U CN2010205692171U CN201020569217U CN201884802U CN 201884802 U CN201884802 U CN 201884802U CN 2010205692171 U CN2010205692171 U CN 2010205692171U CN 201020569217 U CN201020569217 U CN 201020569217U CN 201884802 U CN201884802 U CN 201884802U
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- polyethylene
- waste
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- Extrusion Moulding Of Plastics Or The Like (AREA)
- Rigid Pipes And Flexible Pipes (AREA)
Abstract
The utility model discloses a composite polyethylene pipe with low cost, which has a three-layer composite structure, the inner layer and the outer layer are brand-new high-density low-pressure polyethylene, and the middle layer is low-cost polyethylene made of waste polyethylene material. For the composite polyethylene pipe with low cost disclosed by the utility model, the inner wall and the outer wall are made of brand-new high-density low-pressure polyethylene, so that the smoothness is guaranteed, and the friction and the deposition of waste are reduced; and the middle layer adopts the waste polyethylene for regeneration and granulation, and the cost is reduced as much as possible with the whole performance of the pipe material being guaranteed, therefore the competitiveness is improved.
Description
Technical field
The utility model relates to a kind of polyvinyl piping materials, is specifically related to a kind of non-excavation buried drain pipe with low-cost composite polyethylene tubing.
Background technique
Underground blowdown pipeline is the important foundation facility of depending on for existence and development in the city, yet sustainable development along with World Economics, increasing rapidly of the size of population, the continuous quickening of urbanization process, original pipeline design capacity and service requirement can not satisfy the modern city requirement, and that pipeline needs is constantly newly-built, reconstruction, reparation and dilatation.If adopt traditional excavation type construction, will inevitably cause traffic congestion, original building is destroyed, has strengthened construction cost greatly, and exists construction quality hidden danger.In order to solve above-mentioned drawback, change excavation and filling and fill out " road slide fastener " phenomenon that causes, breed and produced underground utility and build trenchless technology.Trenchless technology has energy-saving and environmental protection, civilized construction, noise free, free from dust, and short construction period does not influence traffic, does not destroy environment, and overall cost is low, the tangible advantage of social benefit.
The polyvinyl piping materials pipeline is pliable and tough, and welding performance becomes the first-selection of non-excavation-use pipe.Simultaneously as non-excavation blowdown with pipe, except needs pliability preferably, also need rigidity and bearing capacity preferably, need inside and outside wall smooth simultaneously, reduce friction and the accumulation of dirt.
Along with the polyethylene prices of raw and semifnished materials rise suddenly and sharply and to the attention of environment, the applicant has developed the buried pollution discharge polyvinyl piping materials that utilizes the waste polyethylene made, the patent of its art applications, its patent No. is " CN200810235124.2 ", patent name " modified polythene tube for buried pollution discharge ", disclose and " utilized the waste and old PE material after cleaning to make the PE granulation; in the PE granulation that obtains, to add modifier; to dry and extrude by high-speed mixing, produce complete standard compliant buried pollution discharge tubing.Realized recycle and reuse, reduced cost of production, reduced consumption, protected environment simultaneously existing resource to waste and old resource." though the tubing that manufactures of this invention met the use standard, on its performance and the high-performance tubing of brand-new high density low pressure polyethylene raw material manufacturing a certain distance is still arranged, also need further improvement badly.
Summary of the invention
The purpose of this utility model is to overcome above-mentioned shortcoming of the prior art, provides a kind of simple in structure, just can satisfy performance requirement, the low-cost polyvinyl piping materials that can reduce cost again.
A kind of low-cost composite polyethylene tubing of the present utility model, described tubing is three-layer composite structure, inside and outside layer is brand-new high density low pressure polyethylene, the low-cost polyethylene that make for the waste polyethylene material in the mesosphere.
In preferred embodiment of the utility model, described low-cost polyethylene is made by waste and old high density low pressure polyethylene, waste and old middle density low pressure polyethylene and waste and old polyethylene from high pressure process.
In preferred embodiment of the utility model, described waste and old high density low pressure polyethylene comprises waste and old water pipe, Hollow barrel, and waste and old middle density low pressure polyethylene comprises waste and old fuel tube, and waste and old polyethylene from high pressure process comprises bottle cap, coating materials.
In preferred embodiment of the utility model, described tubing is three-layer co-extruded composite structure.
The inside and outside wall of low-cost composite polyethylene tubing of the present utility model uses the manufacturing of brand-new high density low pressure polyethylene raw material, has guaranteed degree of finish, has reduced the accumulation of friction and dirt; The waste polyethylene regeneration and granulation is adopted in the mesosphere, under the condition that guarantees the tubing overall performance, has reduced cost as much as possible, has improved competitive ability.
Description of drawings
Fig. 1 is a kind of embodiment's of the utility model a cross section structure.
Among the figure: 1 is that skin, 2 is that mesosphere, 3 is internal layer.
Embodiment
Below in conjunction with accompanying drawing preferred embodiment of the present utility model is described in detail, thereby protection domain of the present utility model is made more explicit defining so that advantage of the present utility model and feature can be easier to be it will be appreciated by those skilled in the art that.
As shown in Figure 1, low-cost composite polyethylene tubing of the present utility model comprises three-decker, and internal layer 3 and outer 1 is brand-new high density low pressure polyethylene, the low-cost polyethylene that make for the waste polyethylene material in mesosphere 2.Described composite pipe is three-layer co-extruded structure.Described low-cost polyethylene is made by waste and old high density low pressure polyethylene, waste and old middle density low pressure polyethylene and waste and old polyethylene from high pressure process.Described waste and old high density low pressure polyethylene comprises waste and old water pipe, Hollow barrel, and waste and old middle density low pressure polyethylene comprises waste and old fuel tube, and waste and old polyethylene from high pressure process comprises bottle cap, coating materials etc.
The concrete processing technology of the utility model composite pipe is:
(1), sorting: waste polyethylene is removed impurity, and classify; Described method for separating is one or more the combination that hand-sorting, magnetic separation, density separation, electrostatic separation, flotation, temperature difference sorting, pneumatic jig branch are chosen.
(2), cleaning and dry: will divide the waste polyethylene of class to clean and drying;
(3), regeneration and granulation: choose and reclaim waste and old high density low pressure polyethylene 40%-60%, middle density low pressure polyethylene 5%-20%, polyethylene from high pressure process 5-10% as raw material, add reinforcing agent 5-10%, antioxidant 3-10%, can also add colorant 2-5% and oiling agent 2%, mix the pulverizing granulation, form the waste polyethylene granulation.Described reinforcing agent is diamond, graphite or microfine coal.
(4), extruding and moulding: waste polyethylene granulation and brand-new high density low pressure polyethylene raw material are added two barrels of extruder respectively, and heating and melting forms two kinds of materials flows, converges through mould, carries out three-layer co-extrudedly, forms described composite polyethylene tubing; Described composite polyethylene tubing comprises three layers, inside and outside two-layerly form by brand-new high density low pressure polyethylene raw material, and the mesosphere is formed by the waste polyethylene granulation.
The inside and outside wall of low-cost composite polyethylene tubing of the present utility model uses the manufacturing of brand-new high density low pressure polyethylene raw material, has guaranteed degree of finish, has reduced the accumulation of friction and dirt; The waste polyethylene regeneration and granulation is adopted in the mesosphere, under the condition that guarantees the tubing overall performance, has reduced cost as much as possible, has improved competitive ability.
The above; it only is embodiment of the present utility model; but protection domain of the present utility model is not limited thereto; any those of ordinary skill in the art are in the disclosed technical scope of the utility model; variation or the replacement that can expect without creative work all should be encompassed within the protection domain of the present utility model.Therefore, protection domain of the present utility model should be as the criterion with the protection domain that claims were limited.
Claims (2)
1. a low-cost composite polyethylene tubing is characterized in that, described tubing is three-layer composite structure, and inside and outside layer is brand-new high density low pressure polyethylene, the low-cost polyethylene that make for the waste polyethylene material in the mesosphere.
2. a kind of low-cost composite polyethylene tubing according to claim 1 is characterized in that described tubing is three-layer co-extruded composite structure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010205692171U CN201884802U (en) | 2010-10-20 | 2010-10-20 | Composite polyethylene pipe with low cost |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010205692171U CN201884802U (en) | 2010-10-20 | 2010-10-20 | Composite polyethylene pipe with low cost |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201884802U true CN201884802U (en) | 2011-06-29 |
Family
ID=44182350
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010205692171U Expired - Fee Related CN201884802U (en) | 2010-10-20 | 2010-10-20 | Composite polyethylene pipe with low cost |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201884802U (en) |
-
2010
- 2010-10-20 CN CN2010205692171U patent/CN201884802U/en not_active Expired - Fee Related
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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: 20110629 Termination date: 20141020 |
|
| EXPY | Termination of patent right or utility model |