CN2477920Y

CN2477920Y - Foamed thermal insulating plastic composite tube

Info

Publication number: CN2477920Y
Application number: CN 00263332
Authority: CN
Inventors: 陈仁慈; 周宝茂; 沈亮; 陈正良
Original assignee: Shanghai Boym Plastics Industry
Current assignee: Shanghai Boym Plastics Industry
Priority date: 2000-12-15
Filing date: 2000-12-15
Publication date: 2002-02-20
Anticipated expiration: 2010-12-15

Abstract

The utility model provides an expanded insulating plastic composite pipe, comprising a plastic pipe, an expanded plastic layer and a protective plastic layer, characterized in that: the expanded plastic layer is evenly wrapped circumferentially and lengthways on the outer side of the plastic pipe, and a protective plastic layer is evenly wrapped circumferentially and lengthways on the outer side of the expanded plastic layer; the plastic pipe, the expanded plastic layer and the protective plastic layer are bound together through hot melting to form an expanded insulating plastic composite pipe of excellent and stable heat-insulating properties.

Description

Foaming body insulating plastic pipe composite pipe

The utility model relates to the pipe of a kind of composite tube, particularly a kind of multi-layer compound structure.

Supply various material plastic tubes in the market, because its corrosion-resistant, in light weight or the like advantage is used widely, wherein also be used for heating pipe and cooling duct, still, these plastic tubes, because its thermal conductivity is higher, heat insulation effect is not good enough, in order to improve its thermal insulation property, in construction, adopt measures such as on-the-spot coating thermal insulation layer, its result makes installing engineering complicated, both took a lot of work, time-consuming, and cost is also high, labor intensity is also big, and the performance of insulation is also unstable, and working life is not long.

The purpose of this utility model is that a kind of improved foaming body insulating plastic pipe composite pipe will be provided, and it can improve effect of heat insulation and stable performance, simple in structurely is beneficial to a large amount of productions, long service life, and have high economic benefit.

Model utility is achieved in that in the outside of plastic tube and is bonded as one in the outside of expandable plastic layer along circumferentially and vertically evenly coating a protection plastic layer, plastic tube, expandable plastic layer and protection plastic layer heat fusion joint along circumferentially and vertically all coating an expandable plastic layer.

The setting of the utility model mat expandable plastic layer, utilize expandable plastic to have good heat-shielding performance, characteristics such as good manufacturability, the foaming body insulating plastic pipe composite pipe of making, overcome the shortcoming of existing plastic tube, good and the maintenance stable performance of the utility model heat-shielding performance, its working life and the technology comparison of taking the scene to coat thermal-protective coating can prolong greatly, it is relatively simple for structure, can utilize the good process of these materials and produce in a large number, thereby its cost increases little, the expansion of the improvement of corresponding its quality and purposes scope both can make the producer obtain high economic benefit, can bring economic benefits with the person for using again, the goods of its standard, the condition of providing convenience is installed by the road, thereby can accelerates the engineering construction progress, reduce operator's labor intensity.

The concrete structure of model utility is provided by following examples and accompanying drawing thereof.

Fig. 1 is that the axle of the utility model foaming body insulating plastic pipe composite pipe is surveyed partial schematic sectional view.

With reference to Fig. 1, foaming body insulating plastic pipe composite pipe includes plastic tube 1, expandable plastic layer 2 and protection plastic layer 3, wherein:

Plastic tube 1 can be the pipe that various materials are made, and these materials include polyethylene, crosslinked polyethylene, modification by copolymerization polypropylene, polybutylene, acrylonitrile---butadiene---styrol copolymer or PVC etc.;

Expandable plastic layer 2, its main material can be polyethylene, polypropylene, polyurethane, any of acrylonitrile---butadiene---styrol copolymer or ethylene-vinyl acetate copolymer etc., expandable plastic layer 2 is along the external circumferential of plastic tube 1 and vertically coats equably, thereby the effect of heat insulation of obtained performance stabilizer pole, the thickness of expandable plastic layer 2 is the heat-shielding performancies that directly influence pipeline, can improve the effect of heat insulation of pipeline along with the increase of expandable plastic layer 2 thickness, this thickness can determine that the thickness of common expandable plastic layer 2 can be 1～20 times of plastic tube 1 pipe thickness by the actual demand of pipeline fed sheet of a media.

Protection plastic layer 3; its main material can be polyethylene, polypropylene---polyurethane, acrylonitrile---any of butadiene---styrol copolymer or ethene---acetate ethylene copolymer etc.; protection plastic layer 3 is along the external circumferential of expandable plastic layer 2 and vertically coats equably that protection plastic layer 3 is avoided extraneous damage in order to the lower expandable plastic layer 2 of protection intensity.

Plastic tube 1, expandable plastic layer 2 and protection plastic layer 3 can utilize machine for extrusion molding through the once-combined moulding of composite dies; can realize the technical scale production of foaming body insulating plastic pipe composite pipe; it is the foaming body insulating plastic pipe composite pipe goods of one that hot melt adhesive is provided; in order to keep each good bonding of goods; should select for use plastic tube 1, expandable plastic layer 2 and protection to mould the main material that layer 3 three have close melting point; select same product body material for use as the three, then its bonding effect is better.

Claims

1, a kind of foaming body insulating plastic pipe composite pipe; comprise plastic tube; it is characterized in that: circumferential and vertically even coating one expandable plastic layer (2) on the edge, the outside of plastic tube (1); at the external circumferential of expandable plastic layer (2) and the vertically even protection plastic layer (3) that coats, plastic tube (1), expandable plastic layer (2) and protection plastic layer (3) hot melt adhesive are one.

2, composite pipe according to claim 1 is characterized in that the thickness of expandable plastic layer (2) can be 1～20 times of plastic tube (1) pipe thickness.

3, composite pipe according to claim 1 is characterized in that the main material of expandable plastic layer (2) can be polyethylene, polypropylene, polyurethane, polystyrene, PVC, acrylonitrile---butadiene---styrol copolymer or ethene---acetate ethylene copolymer.

4, composite pipe according to claim 1 is characterized in that protecting the main material of plastic layer (3)---styrol copolymer or ethene---acetate ethylene copolymer that can be polyethylene, polypropylene, polyurethane, polystyrene, PVC, acrylonitrile, butadiene.