CN201322144Y - Stripping-free hot melt connecting aluminum-plastic composite pipe - Google Patents
Stripping-free hot melt connecting aluminum-plastic composite pipe Download PDFInfo
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- CN201322144Y CN201322144Y CNU2008202414317U CN200820241431U CN201322144Y CN 201322144 Y CN201322144 Y CN 201322144Y CN U2008202414317 U CNU2008202414317 U CN U2008202414317U CN 200820241431 U CN200820241431 U CN 200820241431U CN 201322144 Y CN201322144 Y CN 201322144Y
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- aluminum
- layer
- tube
- composite pipe
- pipe
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Abstract
The utility model relates to an aluminum-plastic composite pipe, particularly relates to a stripping-free hot melt connecting aluminum-plastic composite pipe, which comprises a polypropylene external pipe layer, an aluminum pipe layer, a plastic internal cladding layer, wherein adhesive layers are arranged between the polypropylene external pipe layer and the aluminum pipe layer and between the aluminum pipe layer and the plastic internal cladding layer, and the thickness of the polypropylene external pipe layer accounts for above 70% of the total wall thickness of the composite pipe. The stripping-free hot melt connecting aluminum-plastic composite pipe provides the best safety assurance for the pipeline connection in hot melt connecting form; the aluminum pipe is positioned at the inner side of the composite pipeline, thus reducing the procedure that a thin-wall external plastic cladding layer and the aluminum layer are stripped with special stripping and cutting tools when the existing polyolefin aluminum-plastic composite pipes in the market are hot molten for connection so that a large quantity of manpower and resources are saved and the work efficiency is greatly improved; the problems that as the cutting depth and thickness are difficult to master in prior art, the stripped pipes have oversize, undersize outer diameter and have no roundness so as to cause pipeline joint water leakage and air leakage after hot melt connection are solved.
Description
One, technical field:
The utility model relates to a kind of aluminium plastic composited tube, particularly relates to a kind of stripping type thermal fusion welding aluminium plastic composited tube of exempting from.
Two, background technique:
No matter being industry or civilian in the past, generally all is to adopt the transmission pipeline of Coating Steel Pipe as media such as hot water or cold water or steam, and cost is higher.Afterwards along with the development of plastics macromolecule technology, the intensity of plastics and other performance are greatly improved, it has low, the corrosion resistant advantage of cost in addition, be widely used in the hot water or cold water gradually and use pipeline tubing, but common polypropylene pipe has that linear expansion coeffcient is big, uvioresistant and impervious oxygen poor performance, predisposed to damage by external force and shortcoming such as low temperature brittleness.Industry at present or civil building etc. extensively adopt aluminium-plastic composite pipe.Aluminium-plastic composite pipe is a chemical building material pipeline of new generation, has the advantage of plastic tube and metal pipe concurrently, owing to have plastic tube anticorrosive property and the high advantage of metal pipe intensity concurrently, thereby in various fields such as building, petrochemical industry, be widely used.
The pipe fittings such as thread types or clamp-press type that adopt are connected more between the aluminium-plastic composite pipe originally, tubing and tubing, and the leakage problems of joint does not have all the time and can fundamentally solve.Occurred the aluminium-plastic composite pipe that can hot melt connects afterwards on the market, hot melt connects good seal performance, and easy construction is popularized very soon.But the shortcoming that present aluminium-plastic composite pipe exists is: a kind of outer field plastic layer is thinner, can not satisfy the hot melt requirement, is heat fused to aluminum pipe easily during connection and causes the hot melt connection failure, causes that the pipe joint of installation leaks, leaks gas; Also having a kind of skin is plastic coatings and aluminum tube layer, hot melt must use special-purpose exploitation instrument to peel off its outer field thin-walled plastic overcoating and aluminum tube layer when connecting, be not easy operation, inefficiency, simultaneously when exploiting outer thin-walled plastic overcoating with the exploitation device, often because of being difficult to grasp the degree of depth and the thickness of exploitation, and the tube outer diameter after causing exploiting is excessive, too small or lose circularity, causes the pipe joint after the hot melt connection to leak, leak gas.
Three, model utility content:
The utility model is at the prior art deficiency, a kind of stripping type thermal fusion welding aluminium plastic composited tube of exempting from is proposed, can be connected with material fitting to fitting hot melt, reduced the operation that to peel off outer thin-walled plastic overcoating and aluminum tube layer when existing aluminium-plastic composite pipe connects, improved working efficiency, connect good sealing effect simultaneously, stopped that pipe joint after the hot melt connection leaks, the gas leakage problem.
The technological scheme that the utility model adopted:
A kind of stripping type thermal fusion welding aluminium plastic composited tube of exempting from, contain the polypropylene external tube layer, aluminum tube layer, plastics internal coated layer, be provided with bonding glue-line between polypropylene external tube layer and the aluminum tube layer and between aluminum tube layer and the plastics internal coated layer, the thickness of described polypropylene external tube layer accounts for more than 70% of the total wall thickness of composite pipe.
The described stripping type thermal fusion welding aluminium plastic composited tube of exempting from is the composite pipe of Φ 20 for format diameter, and the thickness H of its outer polypropylene tube layer satisfies: 2.0mm＜H≤3.6mm.
The described stripping type thermal fusion welding aluminium plastic composited tube of exempting from is the composite pipe of Φ 25 for format diameter, and the thickness H of its outer polypropylene tube layer satisfies: 2.4mm＜H≤4.4mm.
The described stripping type thermal fusion welding aluminium plastic composited tube of exempting from is the composite pipe of Φ 32 for format diameter, and the thickness H of its outer polypropylene tube layer satisfies: 2.8mm＜H≤5.2mm.
The described stripping type thermal fusion welding aluminium plastic composited tube of exempting from is the composite pipe of Φ 40 for format diameter, and the thickness H of its outer polypropylene tube layer satisfies: 3.8mm＜H≤6.2mm.
The described stripping type thermal fusion welding aluminium plastic composited tube of exempting from is the composite pipe of Φ 50 for format diameter, and the thickness H of its outer polypropylene tube layer satisfies: 3.9mm＜H≤7.1mm.
The described stripping type thermal fusion welding aluminium plastic composited tube of exempting from is the composite pipe of Φ 63 for format diameter, and the thickness H of its outer polypropylene tube layer satisfies: 5.4mm＜H≤8.7mm.
Useful good effect of the present utility model:
1, the utility model is exempted from stripping type thermal fusion welding aluminium plastic composited tube, and outermost surface polypropylene tube thickness accounts for more than 70% of the total wall thickness of composite pipe, provides the highest safety guarantee for the pipeline with the hot melt Placement connects.The one, be heat fused to aluminum pipe easily when having avoided existing in the market plastic-aluminum PP-R composite pipe to cause hot melt to connect and cause the hot melt connection failure because of outer (heat crucible zone) is too thin, cause that the pipe joint of installation leaks, leak gas; The 2nd, avoided existing in the market plastic-aluminum PP-R composite pipe using tube scissors tool (old tube scissors tool that tube scissors tool especially inferior and blade are blunt) to cause when cutting clamp that tubing loses circularity and becomes ellipse, the tube surfaces hot melt that causes flat direction when hot melt connects less than, and the tube surfaces of ellipse direction has been heat fused to aluminum pipe and cause and the pipe joint of installation is leaked hot melt failure, leak gas.
2, the utility model is exempted from stripping type thermal fusion welding aluminium plastic composited tube, aluminum pipe is positioned at the multiple tube internal layer and presses close to inwall polyethylene thin layer, reduce existing in the market polyolefin aluminium plastic composited tube and when hot melt connects, must peel off the operation of its outer thin-walled plastic overcoating and aluminum tube layer earlier with special-purpose exploitation instrument, thereby saved great amount of manpower and material resources (exploitation device), improved working efficiency greatly; Avoided simultaneously when exploiting outer thin-walled polypropylene tube layer with the exploitation device, because of being difficult to grasp the degree of depth and the thickness of exploitation, and cause excessively, too small or lose circularity because of the tube outer diameter of having exploited, cause the problem that the pipe joint after the hot melt connection leaks, leak gas easily.
3, the utility model is exempted from stripping type thermal fusion welding aluminium plastic composited tube, internal layer adopts aluminum pipe, improved the intensity of composite pipe self, reduced the thermal expansion coefficient of tubing, make its thermal expansion coefficient near metal pipe, avoided the shortcoming of common pure-plastics pipe easy dilatancy the time, can be widely used in industry, civilian by high temperature media such as hot water.
Four, description of drawings:
Fig. 1: the utility model is exempted from stripping type thermal fusion welding aluminium plastic composited tube structural representation
Five, embodiment:
Embodiment one: referring to Fig. 1, the utility model is exempted from stripping type thermal fusion welding aluminium plastic composited tube, contain polypropylene external tube layer 5, aluminum tube layer 3, plastics internal coated layer 1, be provided with outer bonding glue-line 4 between polypropylene external tube layer 5 and the aluminum tube layer 3, bonding glue-line 2 in being provided with between aluminum tube layer 3 and the plastics internal coated layer 1, the utility model exempt from stripping type thermal fusion welding aluminium plastic composited tube different with existing aluminium-plastic composite pipe be: the thickness of polypropylene external tube layer 5 accounts for more than 70% of the total wall thickness of composite pipe.The utility model is exempted from stripping type thermal fusion welding aluminium plastic composited tube, when connecting construction, pipeline need not exploit, with the external layer of composite pipe termination with hot melt (adopting special-purpose heat melting device) and socket joint are connected simultaneously with the inner surface layer of material pipe fitting, structure of molecule interpenetrates between tubing, pipe fitting, has stopped the leaking of pipe joint place, gas leakage problem.
Embodiment two: referring to Fig. 1, present embodiment is exempted from stripping type thermal fusion welding aluminium plastic composited tube, is the composite pipe of Φ 20 for format diameter, and the thickness of its outer polypropylene tube layer 5 is 2.4mm.
Embodiment three: referring to Fig. 1, present embodiment is exempted from stripping type thermal fusion welding aluminium plastic composited tube, is the composite pipe of Φ 20 for format diameter, and the thickness of its outer polypropylene tube layer 5 is 2.6mm.
Embodiment four: referring to Fig. 1, present embodiment is exempted from stripping type thermal fusion welding aluminium plastic composited tube, is the composite pipe of Φ 20 for format diameter, and the thickness of its outer polypropylene tube layer 5 is 3.0mm.
Embodiment five: referring to Fig. 1, present embodiment is exempted from stripping type thermal fusion welding aluminium plastic composited tube, is the composite pipe of Φ 25 for format diameter, and the thickness of its outer polypropylene tube layer 5 is 2.6mm.
Embodiment six: referring to Fig. 1, present embodiment is exempted from stripping type thermal fusion welding aluminium plastic composited tube, is the composite pipe of Φ 25 for format diameter, and the thickness of its outer polypropylene tube layer 5 is 3.3mm.
Embodiment seven: referring to Fig. 1, present embodiment is exempted from stripping type thermal fusion welding aluminium plastic composited tube, is the composite pipe of Φ 25 for format diameter, and the thickness of its outer polypropylene tube layer 5 is 3.8mm.
Embodiment eight: referring to Fig. 1, present embodiment is exempted from stripping type thermal fusion welding aluminium plastic composited tube, is the composite pipe of Φ 32 for format diameter, and the thickness H of its outer polypropylene tube layer 5 is 3.0mm.
Embodiment nine: referring to Fig. 1, present embodiment is exempted from stripping type thermal fusion welding aluminium plastic composited tube, is the composite pipe of Φ 32 for format diameter, and the thickness H of its outer polypropylene tube layer 5 is 4.0mm.
Embodiment ten: referring to Fig. 1, present embodiment is exempted from stripping type thermal fusion welding aluminium plastic composited tube, is the composite pipe of Φ 32 for format diameter, and the thickness H of its outer polypropylene tube layer 5 is 4.6mm.
Embodiment 11: referring to Fig. 1, present embodiment is exempted from stripping type thermal fusion welding aluminium plastic composited tube, is the composite pipe of Φ 40 for format diameter, and the thickness H of its outer polypropylene tube layer 5 is 4.0mm.
Embodiment 12: referring to Fig. 1, present embodiment is exempted from stripping type thermal fusion welding aluminium plastic composited tube, is the composite pipe of Φ 40 for format diameter, and the thickness H of its outer polypropylene tube layer 5 is 5.0mm.
Embodiment 13: referring to Fig. 1, present embodiment is exempted from stripping type thermal fusion welding aluminium plastic composited tube, is the composite pipe of Φ 40 for format diameter, and the thickness H of its outer polypropylene tube layer 5 is 5.8mm.
Embodiment 14: referring to Fig. 1, present embodiment is exempted from stripping type thermal fusion welding aluminium plastic composited tube, is the composite pipe of Φ 50 for format diameter, and the thickness H of its outer polypropylene tube layer 5 is 4.2mm.
Embodiment 15: referring to Fig. 1, present embodiment is exempted from stripping type thermal fusion welding aluminium plastic composited tube, is the composite pipe of Φ 50 for format diameter, and the thickness H of its outer polypropylene tube layer 5 is 5.3mm.
Embodiment 16: referring to Fig. 1, present embodiment is exempted from stripping type thermal fusion welding aluminium plastic composited tube, is the composite pipe of Φ 50 for format diameter, and the thickness H of its outer polypropylene tube layer 5 is 6.6mm.
Embodiment 17: referring to Fig. 1, present embodiment is exempted from stripping type thermal fusion welding aluminium plastic composited tube, is the composite pipe of Φ 63 for format diameter, and the thickness H of its outer polypropylene tube layer is 5.8mm.
Embodiment 18: referring to Fig. 1, present embodiment is exempted from stripping type thermal fusion welding aluminium plastic composited tube, is the composite pipe of Φ 63 for format diameter, and the thickness H of its outer polypropylene tube layer is 6.8mm.
Embodiment 19: referring to Fig. 1, present embodiment is exempted from stripping type thermal fusion welding aluminium plastic composited tube, is the composite pipe of Φ 63 for format diameter, and the thickness H of its outer polypropylene tube layer is 8.0mm.
Claims (7)
1, a kind of stripping type thermal fusion welding aluminium plastic composited tube of exempting from, contain the polypropylene external tube layer, aluminum tube layer, the plastics internal coated layer, be provided with bonding glue-line between polypropylene external tube layer and the aluminum tube layer and between aluminum tube layer and the plastics internal coated layer, it is characterized in that: the thickness of described polypropylene external tube layer accounts for more than 70% of the total wall thickness of composite pipe.
2, according to the described stripping type thermal fusion welding aluminium plastic composited tube of exempting from of claim 1, it is characterized in that: for format diameter is the composite pipe of Φ 20, and the thickness H of its outer polypropylene tube layer satisfies: 2.0mm＜H≤3.6mm.
3, according to the described stripping type thermal fusion welding aluminium plastic composited tube of exempting from of claim 1, it is characterized in that: for format diameter is the composite pipe of Φ 25, and the thickness H of its outer polypropylene tube layer satisfies: 2.4mm＜H≤4.4mm.
4, according to the described stripping type thermal fusion welding aluminium plastic composited tube of exempting from of claim 1, it is characterized in that: for format diameter is the composite pipe of Φ 32, and the thickness H of its outer polypropylene tube layer satisfies: 2.8mm＜H≤5.2mm.
5, according to the described stripping type thermal fusion welding aluminium plastic composited tube of exempting from of claim 1, it is characterized in that: for format diameter is the composite pipe of Φ 40, and the thickness H of its outer polypropylene tube layer satisfies: 3.8mm＜H≤6.2mm.
6, according to the described stripping type thermal fusion welding aluminium plastic composited tube of exempting from of claim 1, it is characterized in that: for format diameter is the composite pipe of Φ 50, and the thickness H of its outer polypropylene tube layer satisfies: 3.9mm＜H≤7.1mm.
7, according to the described stripping type thermal fusion welding aluminium plastic composited tube of exempting from of claim 1, it is characterized in that: for format diameter is the composite pipe of Φ 63, and the thickness H of its outer polypropylene tube layer satisfies: 5.4mm＜H≤8.7mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008202414317U CN201322144Y (en) | 2008-12-31 | 2008-12-31 | Stripping-free hot melt connecting aluminum-plastic composite pipe |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008202414317U CN201322144Y (en) | 2008-12-31 | 2008-12-31 | Stripping-free hot melt connecting aluminum-plastic composite pipe |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201322144Y true CN201322144Y (en) | 2009-10-07 |
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ID=41159527
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2008202414317U Expired - Lifetime CN201322144Y (en) | 2008-12-31 | 2008-12-31 | Stripping-free hot melt connecting aluminum-plastic composite pipe |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201322144Y (en) |
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2008
- 2008-12-31 CN CNU2008202414317U patent/CN201322144Y/en not_active Expired - Lifetime
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20091007 |