CN2437932Y

CN2437932Y - Stretch oriented high-strength composite plastic pipe

Info

Publication number: CN2437932Y
Application number: CN 00257952
Authority: CN
Inventors: 甘国工
Original assignee: Individual
Current assignee: Individual
Priority date: 2000-10-23
Filing date: 2000-10-23
Publication date: 2001-07-04
Anticipated expiration: 2010-10-23

Abstract

The utility model provides a stretch oriented high-strength composite plastic pipe whose strength can be increased by stretching and orienting the polymer of the high molecular. The utility model is characterized in that the inner part of the pipe wall of the plastic pipe at least is provided with a plastic layer which is stretched and oriented in radial and axial way or a plastic layer which is stretched and oriented in radial way or a plastic layer with radial strength and/or at least a plastic layer whose radial strength is higher than axial strength by stretching and orienting and/or at least a plastic layer which is stretched and oriented in axial way. Compared with the general plastic pipe and the general composite pipe which are produced by the extrusion process, the composite plastic pipe of the utility model not only can save the raw material, but also can have higher internal and external pressure bearing ability and higher combination property.

Description

The high-strength composite plastic pipe of stretch orientation

The utility model relates to the high-strength composite plastic pipe of the stretch orientation that a kind of macromolecule stretch orientation by polymer gains in strength.

The plastic tube of various materials is quite general in engineering is used, people are in order to adapt to different requirement of engineering, on the basis of extrusion molding production plastic tube, further develop again and formed and produce the compound composite pipe of various plastic materialss with coextruding method, the appearance of these composite pipes, for various requirement of engineering provide more broad selection space, because the compound pipe that is extruded into of different plastics, make the different pressure conveying of different performance adaptation of plastics obtain maximum performance with different fed sheet of a media and different serviceability temperatures, as everybody knows, when the material of plastic tube constant, under fed sheet of a media and the temperature-resistant situation, if will improve discharge pressure, have to increase the wall thickness of plastic tube, even employing is the plastic composite pipe that coetrusion is produced, if will improve discharge pressure, also can only be the wall thickness that increases plastic tube.Otherwise the kind of the material that just only changes, compound as metal and plastics, or resin and winding fiber is compound etc.

In view of above reason, the purpose of this utility model is in order to overcome above deficiency, to provide a kind of by saving material that the macromolecule stretch orientation of polymer is gained in strength, the high-strength composite plastic pipe of the stretch orientation of higher bearing capacity being arranged.

The purpose of this utility model is achieved like this: the high-strength composite plastic pipe of the utility model stretch orientation, it is characterized in that having at least in the plastic tube tube wall one deck through radial and axial biaxial tension orientation or through radially monoway stretch-oriented or radial strength be higher than the plastic layer of axial strength and/or at least the unstretched orientation of one deck plastic layer and/or at least one deck through the plastic layer of axial tension orientation.

Have one deck expandable plastic layer in the above-mentioned plastic tube tube wall at least, be used to be incubated or reduce the rigidity of FLUID TRANSPORTATION noise or increase pipe.

Each plastic layer is the variety classes high molecular polymer in the above-mentioned plastic tube tube wall.

Compound between each plastic layer in the above-mentioned plastic tube tube wall by adhesive layer.

For adapt to different usage requirements, connection request and different medium and environmental requirement can with the utility model plastic tube tube wall with the variety classes high molecular polymerization with needs carry out stretch orientation or not stretch orientation be composited.The tube wall of the utility model plastic tube is to be composited by the plastic layer that needs by different designs, also can add nanometer or micron-sized mineral filler in some plastic layer and improve the performance of composite plastic layer, compound between each plastic layer can be compound with Bond, also can be compound with fusion or alternate manner.

Not 5 to 14 times of the plastic tube wall of stretch orientation and plastics floor heights of strength ratio after the plastic layer drawn directional process in the utility model plastic tube, the tube wall attenuate several times, can utilize that wall thickness reduction is convenient to flatten plastic tube, thus this kind plastic tube can flatten be tubular band and one-tenth coil around.

The utility model also has higher interior bearing capacity and integration capability except that saving material.

Describe embodiment of the present utility model in detail below in conjunction with accompanying drawing:

Fig. 1 is the utility model structural representation Fig. 1.

Fig. 2 is the utility model structural representation Fig. 2.

Fig. 3 is the utility model structural representation Fig. 3.

Fig. 4 becomes to coil around phase diagram for the utility model.

Embodiment 1:

Fig. 1 has provided embodiment 1 figure of the present utility model.The polypropylene plastics bed of material 3 that the compound radial and axial biaxial tension orientation (or radially monoway stretch-oriented) of high density polyethylene (HDPE) (or medium density polyethylene) plastic layer 2 of unstretched orientation and fusion is arranged in the high-strength composite plastic pipe 1.

Embodiment 2:

Fig. 2 has provided embodiment 2 figure of the present utility model.High-strength composite plastic pipe 4 (being polypropylene) is to be composited by the polypropylene plastics bed of material 5 of radial drawing orientation and the polypropylene plastics bed of material 6 fusions that are positioned at the axial tension orientation in week inside and outside the polypropylene plastics bed of material.

Embodiment 3:

Fig. 3 has provided embodiment 3 figure of the present utility model.The periphery of the plastic foamed layer 8 of the high density polyethylene (HDPE) in the high-strength composite plastic pipe 7 (or medium density polyethylene) is the close layers 9 of matter, is the high-density polyethylene plastics layer 10 of biaxial tension orientation (or radial drawing orientation) in the plastic foamed layer 8.

The utility model high-strength composite plastic pipe is because of adopting the reason of stretch orientation process treating, and the interior bearing capacity of tube wall is higher, and is much thinner than the tube wall of general pipe, can flatten be the tubular band and can become to coil as shown in Figure 4 around.

Claims

1, a kind of high-strength composite plastic pipe of stretch orientation, it is characterized in that having at least in the plastic tube tube wall one deck through radial and axial biaxial tension orientation or through radially monoway stretch-oriented or radial strength be higher than the plastic layer of axial strength and/or at least the unstretched orientation of one deck plastic layer and/or at least one deck through the plastic layer of axial tension orientation.

2, the high-strength composite plastic pipe of stretch orientation as claimed in claim 1 is characterized in that having one deck expandable plastic layer in the plastic tube tube wall at least.

3, the high-strength composite plastic pipe of stretch orientation as claimed in claim 1 or 2 is characterized in that each plastic layer is the variety classes high molecular polymer in the plastic tube tube wall.

4, the high-strength composite plastic pipe of stretch orientation as claimed in claim 1 or 2 is characterized in that in the plastic tube tube wall compound by adhesive layer between each plastic layer.

5, the high-strength composite plastic pipe of stretch orientation as claimed in claim 3 is characterized in that in the plastic tube tube wall compound by adhesive layer between each plastic layer.

6, the high-strength composite plastic pipe of stretch orientation as claimed in claim 1 or 2 is characterized in that in the plastic tube tube wall it being that fusion is compound between each plastic layer.

7, the high-strength composite plastic pipe of stretch orientation as claimed in claim 3 is characterized in that in the plastic tube tube wall it being that fusion is compound between each plastic layer.