CN201354891Y

CN201354891Y - Plastic wound structural wall pipe

Info

Publication number: CN201354891Y
Application number: CNU2008201581079U
Authority: CN
Inventors: 苏长裕; 李华维
Original assignee: SHANGHAI QINGYUAN PIPE TECHNOLOGY Co Ltd
Current assignee: SHANGHAI QINGYUAN PIPE TECHNOLOGY Co Ltd
Priority date: 2008-12-29
Filing date: 2008-12-29
Publication date: 2009-12-02
Anticipated expiration: 2018-12-29

Abstract

The utility model provides a plastic wound structural wall pipe, which is obtained by spirally winding plastic square pipe and by welding through hot-melt adhesive, wherein the plastic square pipe is manufactured by using ultra-high molecular weight polyethylene as an external layer and by using common polyethylene as an internal layer. As the utility model adopts the ultra-high molecular weight polyethylene as the external layer of the square pipe, the pipe not only has excellent scratch resistance and corrosion resistance, but also improves the ring stiffness of the pipe workpiece.

Description

Plastic winding structure tube

Technical field

The utility model relates to a kind of plastic tube, relates in particular to a kind of plastic winding structure tube.

Background technique

At present, the tubing that domestic underground water supply and drainage pipe-line system is used mainly contains concrete pipe, concrete reinforced pipe and cast iron tube, because it is bigger than length and vehicle flowrate that it builds the time limit, the buried concrete waste pipe in some highway section and cast iron water pipe are damaged in succession aging, cause municipal drainage to stop up, the water pipe explosion, not only bring inconvenience to citizen's life, and because of working procedure complicated, the pipe joint number is more, leakage proof is difficult in time handling, accumulate over a long period and not only can cause road foundation to sink, effluent seepage, also can pollute soil property, the water source becomes public hazards.For this reason, adopt have good withstand voltage, light weight, corrosion-resistant, environment protection type tubing become the task of top priority.

Recent years, all types of plastic tubing rises gradually at home, and progressively replaces concrete pipe, concrete reinforced pipe and cast iron tube.With respect to concrete pipe, concrete reinforced pipe and cast iron tube, plastic tube have light weight, corrosion-resistant, the low pollution or free of contamination remarkable advantage, and plastic tube is also longer working life under identical withstand voltage condition.What plastic tube was relatively more commonly used at present is the pvc pipe material, though price is lower, it is heavier to exist quality, and withstand voltage deficiency has shortcomings such as a small amount of pollution.And the HDPE solid wall pipe, though function admirable, cost is higher, waste material.So a kind of novel plastic winding structural wall tube arises at the historic moment, it has kept the advantage of common plastics tubing, has overcome their some shortcomings simultaneously again.

The polythene winding structure wall pipeline purposes is boundless, and its main advantage can use mini-plant to produce the tubing of bore greater than 2000mm aspect bore.But because the raw material that polythene winding structure wall pipeline uses mainly is a polyethylene, though and polyethylene self has toughness preferably, but Young's modulus is less, the tubing of making is if satisfy the ring stiffness of tubing, must increase the product substance, even like this, in a lot of practical engineering application, because limitation of field condition, often make outer pipe wall be easy to be subjected to scratch or impact and produce broken hole, thereby influence the product engineering application quality, can't satisfy the requirement of mal-condition, so the application and the development of polythene winding structure wall pipeline have been limited.

The model utility content

The purpose of this utility model in order to overcome the problems referred to above that prior art exists, provides a kind of plastic winding structure tube with new structure exactly.

The purpose of this utility model is achieved in that a kind of plastic winding structure tube, twine and be made of welded connection by plastics square tube spiral with hot melt adhesive, described plastics square tube with ultra-high molecular weight polyethylene as outer, be made as internal layer with common polythene.

The outer field thickness of described plastics square tube is the 2%-50% of pipe thickness, and the thickness of internal layer is the 50%-98% of pipe thickness.

The utility model plastic winding structure tube is owing to adopted the skin of ultra-high molecular weight polyethylene as square tube, make pipeline not only have good scratch resistance wound, decay resistance, and because the high elastic modulus of ultra-high molecular weight polyethylene, can improve the ring stiffness of tubing, reduce the use amount of polythene material.

Description of drawings

The sectional structure schematic representation of Fig. 1 the utility model plastic winding structure tube;

Fig. 2 is the partial enlarged drawing of Fig. 1.

Embodiment

Referring to Fig. 1, Fig. 2, plastic winding structure tube of the present utility model, be made of welded connection by the winding of plastics square tube 1 spiral and with hot melt adhesive 2, its axial section comprises the rectangle square tube 1 that a plurality of structures are identical, be welded to connect by hot melt adhesive 2 between square tube and the square tube, form a plurality of continuous I-shaped die structures.Plastics square tube 1 with ultra-high molecular weight polyethylene as outer 11, be made as internal layer 12 with common polythene.Outer field thickness is the 2%-50% of pipe thickness, and the thickness of internal layer is the 50%-98% of pipe thickness.

The making method of plastic winding structure tube of the present utility model is, at first use an extruder, with High molecular weight polyethylene as raw material, the control processing temperature is 190～230 ℃, melt extrude the outer layered material embryo of ultra-high molecular weight polyethylene, use another extruder as square tube, with common polythene as raw material, the control processing temperature is 160～200 ℃, extrudes the interior layered material embryo of common polythene as square tube.Then outer layered material embryo and interior layered material embryo are combined by the extruder core together, the through port mould is extruded again, behind the cooling unit cooling and shaping, promptly obtains the inside and outside two-layer square tube that is made of different materials.Square tube is sent into wind carry out that spiral twines and be welded to connect,, promptly become plastic winding structure tube of the present utility model through cooling, typing, fixed length cutting with hot melt adhesive.

Claims

1, a kind of plastic winding structure tube is characterized in that: twine and be made of welded connection by plastics square tube spiral with hot melt adhesive, described plastics square tube with ultra-high molecular weight polyethylene as outer, be made as internal layer with common polythene.

2, plastic winding structure tube as claimed in claim 1 is characterized in that: the outer field thickness of described plastics square tube is the 2%-50% of pipe thickness, and the thickness of internal layer is the 50%-98% of pipe thickness.