CN2531216Y - Aluminium-sandwiched polythene and random copolymerization polypropylene pressure pipe - Google Patents
Aluminium-sandwiched polythene and random copolymerization polypropylene pressure pipe Download PDFInfo
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- CN2531216Y CN2531216Y CN 02236805 CN02236805U CN2531216Y CN 2531216 Y CN2531216 Y CN 2531216Y CN 02236805 CN02236805 CN 02236805 CN 02236805 U CN02236805 U CN 02236805U CN 2531216 Y CN2531216 Y CN 2531216Y
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- utility
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- tube
- hot melt
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Abstract
The utility model provides a polyethylene and tri-type random copolymerization polypropylene aluminum clipping pressure tube. The utility model has five layers in total. The structure characteristic of the utility model is that the utility model comprises an inner layer (1), a framework layer (3), and an outer layer (5). A special using hot melt adhesive layer (2) is arranged between the inner layer (1) and the frame work layer (3), and another special using hot melt adhesive layer (4) is arranged between the framework layer (3) and the outer layer (5). The tube inner layer (1) is made of polyethylene material. The tube outer layer (5) is made of tri-type random copolymerization polypropylene material. The utility model provides the advantages of long term pressure withstanding, heat withstanding, and partial acid, alkali, salt withstanding in use. Moreover, the tube is hard to deform or leakage. Therefore, the utility model is suitable for cold water or hot water and has good heat preservation and energy saving performance.
Description
Affiliated technical field the utility model relates to a kind of building water supply pipeline, particularly a kind of folder aluminium pressure tube.
Background technique is present, and general building water supply pipeline has galvanized pipe, copper pipe, aluminium-plastic composite pipe, U-PVC pipe, steel to mould pipe, PP-R pipe, and PP-R folder aluminum pipe exists in use that corrosion, verdigris, joint seep water, yielding, the problem of grading that hot and cold pipe is arranged.Use polypropylene in the building pipe, though this tubing has the good corrosion resistance of religion, connect with hot melt, because intensity is low, expansion coefficient is big, can not carry the liquids and gases of special media, has therefore limited its application area.
Summary of the invention
Goal of the invention of the present utility model is: a kind of polyethylene and the atactic copolymerized polypropene aluminium-sandwiched pressure tube of three types are provided, in use can be withstand voltage for a long time, heat-resisting, the soda acid of anti-part salt, pipeline is not yielding, easy to leak, hot and cold water are not general, and heat preservation energy-saving is good.
The technical scheme in the invention for solving the technical problem is; The structure characteristic of polyethylene and the atactic copolymerized polypropene aluminium-sandwiched pressure tube of three types is hot melt adhesive special by internal layer, framework layer, the outer composition between internal layer and the framework layer, is hot melt adhesive special between framework layer and the skin.Inner tube layer is a polythene material, and is bonding with hot melt adhesive special with the aluminum pipe inwall that framework layer adopts the vertical welding of stack to form; Outer tube layer is three type atactic copolymerized polypropene materials, and is bonding with hot melt adhesive special with the aluminum pipe outer wall, totally five layers of once-through.
The beneficial effects of the utility model are: because the inner tube layer polythene material is high temperature resistant food grade plastic, operating temperature is-40 ℃-95 ℃, and the fluid operating internal pressure is 1.0MPa, normal temperature, anti-various acid-base salt solutions; Hot melt adhesive special is used for polyethylene and the metal aluminum pipe is bonding; Vertically stack welding aluminum pipe plays skeleton function to whole pipe and therefore is called framework layer, and the adjustment by aluminum pipe elasticity counterpressure comes the stable of holding tube road shape, have flexible, do not rebound, vertical strong, the flame retarding that improves pipeline of heat dissipation potential; Hot melt adhesive special be used for three type atactic copolymerized polypropenes and the metal aluminum pipe bonding; Outer tube layer three type atactic copolymerized polypropenes have health, withstand voltage, heat-resisting, corrosion-resistant, insulation, energy-conservation, soft, anti-seismic performance, and its heat distortion temperature is 150 ℃, flexural strength 3MPa,, tensile strength reaches 2.5MPa, compressive strength 5MPa, thermal conductivity 0.24W/mk.Its product technology parameter is:
Long-term work temperature-40 ℃～95 ℃
Short-term job temperature～110 ℃
Allow 5 times of pipes of bending radius diameter
Thermal expansion coefficient 25*10-6m/mk
Thermal conductivity 0.45m/mk
Long-term work pressure 3.0Mpa.
Use above-mentioned model utility pressure tube and pipe fitting Placement to adopt hot-melt technology, thoroughly avoid fluid seepage.
Description of drawings
Below in conjunction with drawings and Examples the utility model is described further.
The transverse sectional view of Fig. 1 polyethylene and the atactic copolymerized polypropene aluminium-sandwiched pressure tube of three types
The longitudinal sectional view of Fig. 2 polyethylene and the atactic copolymerized polypropene aluminium-sandwiched pressure tube of three types
Structure characteristic is made up of internal layer 1, framework layer 3, outer 5, is hot melt adhesive special layer 2 between internal layer 1 and the framework layer 3, is hot melt adhesive special layer 4 between the framework layer 3 and outer 5.Inner tube layer is a polythene material, and is bonding with hot melt adhesive special with the aluminum pipe inwall that framework layer adopts the vertical welding of stack to form; Outer tube layer is three type atactic copolymerized polypropene materials, and is bonding with hot melt adhesive special with the aluminum pipe outer wall, and with four plastic extruders and a ultrasonic welding machine synchronous working, through heating, heating, welding makes the five-layer structure once-through.
Claims (2)
1: polyethylene and the atactic copolymerized polypropene aluminium-sandwiched pressure tube of three types have five layers, its structure characteristic is made up of internal layer (1), framework layer (3), outer (5), being hot melt adhesive special layer (2) between internal layer (1) and the framework layer (3), is hot melt adhesive special layer (4) between framework layer (3) and outer (5).
2: polyethylene according to claim 1 and the atactic copolymerized polypropene aluminium-sandwiched pressure tube of three types is characterized in that; Inner tube layer (1) is a polythene material; Outer tube layer (5) is three type atactic copolymerized polypropene materials.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 02236805 CN2531216Y (en) | 2002-05-29 | 2002-05-29 | Aluminium-sandwiched polythene and random copolymerization polypropylene pressure pipe |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 02236805 CN2531216Y (en) | 2002-05-29 | 2002-05-29 | Aluminium-sandwiched polythene and random copolymerization polypropylene pressure pipe |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2531216Y true CN2531216Y (en) | 2003-01-15 |
Family
ID=33710950
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 02236805 Expired - Fee Related CN2531216Y (en) | 2002-05-29 | 2002-05-29 | Aluminium-sandwiched polythene and random copolymerization polypropylene pressure pipe |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2531216Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101699120B (en) * | 2009-11-06 | 2011-01-05 | 周宝茂 | Microporous plastic-covered PPR copper liner reinforced composite pipe and preparation method thereof |
-
2002
- 2002-05-29 CN CN 02236805 patent/CN2531216Y/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101699120B (en) * | 2009-11-06 | 2011-01-05 | 周宝茂 | Microporous plastic-covered PPR copper liner reinforced composite pipe and preparation method thereof |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20030115 Termination date: 20100529 |