CN1095533C - Metal pipe with heat-insulating foamed plastic coating and its manufacture - Google Patents

Metal pipe with heat-insulating foamed plastic coating and its manufacture Download PDF

Info

Publication number
CN1095533C
CN1095533C CN00115382A CN00115382A CN1095533C CN 1095533 C CN1095533 C CN 1095533C CN 00115382 A CN00115382 A CN 00115382A CN 00115382 A CN00115382 A CN 00115382A CN 1095533 C CN1095533 C CN 1095533C
Authority
CN
China
Prior art keywords
heat
layer
metal pipe
foaming
plastics
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Fee Related
Application number
CN00115382A
Other languages
Chinese (zh)
Other versions
CN1267801A (en
Inventor
陈仁慈
周宝茂
沈亮
陈正良
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Shanghai Boym Plastics Industry
Original Assignee
Individual
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Family has litigation
First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=4584836&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=CN1095533(C) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by Individual filed Critical Individual
Priority to CN00115382A priority Critical patent/CN1095533C/en
Publication of CN1267801A publication Critical patent/CN1267801A/en
Application granted granted Critical
Publication of CN1095533C publication Critical patent/CN1095533C/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Landscapes

  • Thermal Insulation (AREA)
  • Extrusion Moulding Of Plastics Or The Like (AREA)

Abstract

The present invention relates to a heat insulating metal pipe coated with foamed plastics, which is composed of a metal pipe, a plastic foam body layer and a plastic protective layer from the inside to the outside. The present invention uses a plastic extruder to extrude plastics of the foam body layer and the protecting layer. The foam body layer and the protecting layer are compounded and molded with the metal pipe in one time by a compound mold. The heat insulating metal pipe coated with foamed plastics of the present invention has the advantages of heat thermal insulation, moisture prevention, fire prevention, stable production quality, long service life, etc. A construction progress can be enhanced for the installation of a heat insulating pipeline by the utilization of the pipe, and manual labor strength can be reduced.

Description

The manufacture method of metal pipe with heat-insulating foamed plastic coating
Technical field:
The present invention relates to metallic conduit, particularly a kind of manufacture method of metal pipe with heat-insulating foamed plastic coating.
Background technique:
The heat-insulation and heat-preservation of existing metallic conduit normally with thermal insulating material by manual wrapped or be set on the appearance of metal tube; and then be wrapped on the thermal insulating material with boundary belt (cloth); need to consume great amount of manpower and material resources, not only labor intensity is big, and operator safety also has problems.Usually cause waste of material because of manual operations is improper, heat insulation effect is also bad, causes the energy and loss economically.Also usually because thermal insulating material is selected for use improper or the appearance protective layer does not have protective action and causes economic loss.
European patent EP-726134A1 discloses a kind of manufacture method of multilayer thermoplastic tube, comprises the following steps:
1. make the first layer thermoplastic pipe of inner wall smooth, appearance that it is uneven and above-mentioned external pipe welding (the equal out-of-flatness of appearance in the external pipe);
2. keep the uneven shape of external pipe;
3. the external pipe with above-mentioned not planar surface is heated to fusion temp;
4. the external pipe to above-mentioned heating is forced into less than around atmospheric pressure;
5. on above-mentioned heating and the external pipe appearance injustice, extrude one deck thermoplastic pipe again;
6. to the pressurization of above-mentioned pipe, make the welding of the 3rd layer of pipe and second layer pipe, pressurization this moment and last time pressurizeed different;
7. cooling multiplayer pipe.
But this is a manufacture method of making the multilayer thermoplastic tube, does not disclose the manufacture method of metal pipe with heat-insulating foamed plastic coating.
Summary of the invention:
The technical problem to be solved in the present invention is to provide a kind of manufacture method of metal pipe with heat-insulating foamed plastic coating in order to overcome above-mentioned defective, creates conditions with the large-scale industrial production that realizes the metal tube heat-insulation and heat-preservation.
Technical solution of the present invention is as follows:
A kind of manufacture method of metal pipe with heat-insulating foamed plastic coating comprises the following steps:
Mud, dirt, greasy dirt are removed in the surface treatment of 1>metal tube;
The preparation of 2>plastics foam raw material, mixing in extruder, heat fused, foaming;
The preparation of 3>plastic protective layer raw material, mixing, heat fused in extruder;
The preheating of 4>metal tube;
5>extruder is extruded the plastics foam of fusing and is compound with the surface extruding of metal tube;
6>extruder is extruded the protective layer plastics of fusing, and compound with foaming body layer plastic co-extrusion;
7>cooling and shaping.
Be characterized in that above-mentioned the 4th, the 5th, the 6th step is one-time formed in composite machine head.
Said composite machine head is by lock screw, interior adjusting screw with regulate screw outward and connect to form by preceding locknut, plug, mould parent, foaming machine neck, big mouthful mould, back locknut, sandwich layer rod, body, osculum mould, sheath machine neck and heater, between mould parent, foaming machine neck, sandwich layer rod and big mouthful mould, constitute foaming body runner S1, between body, sheath machine neck and big mouthful mould, constitute sheath runner S2.
Said metal tube is under the preheating of heater; the plastics foam of fusing and foaming imports foaming body runner S1 by extruder down by the extruding of foaming machine neck; compound in the extruding of the surface of die orifice and metal tube; the protective layer plastics of fusing import sheath runner S2 down by the extruding that extruder passes through sheath machine neck; compound at die orifice and foaming layer plastic co-extrusion, once-through has the metal pipe with heat-insulating foamed plastic coating of metal tube, plastics blister layer and plastic protective layer.
The body material of described plastics blister layer can be PVC, polystyrene, polyethylene, polyurethane, polypropylene, or acrylonitrile butadient styrene, or ethylene-vinyl acetate copolymer.
The body material of described plastic protective layer can be PVC, polystyrene, polyethylene, polyurethane, polypropylene, or acrylonitrile butadient styrene, or ethylene-vinyl acetate copolymer.
The invention will be further described below in conjunction with drawings and Examples.
Description of drawings:
Fig. 1 is the structural representation of metal pipe with heat-insulating foamed plastic coating of the present invention.
Fig. 2 is the structure cross-sectional schematic of composite dies of the present invention.
Among the figure: 1---metal tube
2---the plastics blister layer
3---plastic protective layer
01---preceding locknut 02---plug 03---mould parent
04---foaming machine neck 05---big mouthful mould 06---back locknut
07---sandwich layer rod 08---body 09---osculum mould
011---lock screw 012---is regulated screw 013 outward---sheath machine neck
014---interior adjusting screw 015---heater
Embodiment:
The structure of metal pipe with heat-insulating foamed plastic coating of the present invention as shown in Figure 1, internal layer is a metal tube 1, the centre is a plastic foam material layer 2, skin is a plastic protective layer 3.Said metal tube can be various metal tubes or metallic hose.The body material of said plastics blister layer can be a PVC, or polystyrene, or polyethylene, or polyurethane, or polypropylene, or acrylonitrile. butadiene. and styrol copolymer, or ethene. acetate ethylene copolymer etc.The body material of said plastic protective layer also can be chosen from following raw materials according: PVC, polystyrene, polyethylene, polyurethane, polypropylene, acrylonitrile. ethene. and styrol copolymer, ethene. acetate ethylene copolymer.Certainly when once choosing foaming body body material and protective layer body material, wish that their melting point is approaching, same material is better certainly.
The manufacture method of metal pipe with heat-insulating foamed plastic coating of the present invention comprises the following steps:
1. processing such as mud, dirt, greasy dirt are removed on metal tube 1 surface; 2. plastics foam raw material preparation, mixed in extruder, heat fused, foaming; 3. plastic protective layer raw material preparation, mixed in extrusion press, heat fused; 4. metal tube gives heat; 5. extruder will melt that the plastics foam that foamed is extruded and be compound with the surface extruding of metal tube; 6. extruder is extruded the protective layer plastics of fusing, and compound with the foaming layer plastic co-extrusion; Above-mentioned the 4. 7. cooling and shaping is characterized in, 5., 6. the step is one step completed in a composite machine head.
Fig. 2 is the structure cross-sectional schematic of composite machine head in the manufacture method of the present invention.This composite machine head is by preceding locknut 01; plug 02; mould parent 03; foaming machine neck 04; big mouthful mould 05; back locknut 06; sandwich layer rod 07; body 08; osculum mould 09; sheath machine neck 013 and heater 015 are by lock screw 011; outer adjusting screw 012 and interior adjusting screw 014 are formed by connecting; at mould parent 03; foaming machine neck 04; constitute foaming body runner S1 between sandwich layer rod 07 and the big mouthful mould 05; pass through the extruding current downflow of foaming machine neck 04 owing to extruder for the expandable plastic of fusing; at body 08; constitute sheath runner S2 between sheath machine neck 013 and the big mouthful mould 05; by the extruding current downflow of extruder, has metal tube 1 for the protective layer plastics that melt at die orifice and metal tube 1 compound once-through by sheath machine neck 013; the metal pipe with heat-insulating foamed plastic coating of plastic foam material layer 2 and plastic protective layer 3.
The feasibility and the technique effect of explanation the present invention and the manufacturing process thereof of taking a single example below.
Select PVC to make the body material of foaming body, its prescription is as follows:
The raw material weight ratio
PVC 100
Stabilizer 10.2
Tissuemat E 1.3
Ceresine 14
Calcium stearate 3.8
Filler 6.3
Stabilizer 0.8
Protective layer (selecting PVC to make the main body raw material)
PVC 100
Stabilizer 12.0
Tissuemat E 1.3
Ceresine 8.0
Calcium stearate 2.5
Plasticizing agent 18.0
Filler 6.0
Fire retardant 15.0
Antiager 3.3
Pigment 0.2
Utilizing above-mentioned raw materials is 150 ℃ to Cu metal tubes in the extruder barrel temperature, 140 ℃ of die sleeve temperature, 45 rev/mins of extruder screw rotating speeds, head pressure 12 MPas have obtained compound one-time formed metal pipe with heat-insulating foamed plastic coating under the process parameter of copper pipe hauling speed 5 meter per seconds.Show that with on probation the performance and the advantage of the metal pipe with heat-insulating foamed plastic coating that technology of the present invention is compound are after tested:
(1), thermal conductivity is low, when 0 ℃ of mean temperature, pipeline thermal conductivity≤0.03 watt/meter. degree (w/m.k) only is 1/10th of a traditional insulation pipe thermal conductivity; Under identical environmental conditions, the thermal insulating material use amount that reaches identical heat insulation effect descends more than 50%.
(2), the closed pore thermal insulation layer, steam is difficult to be penetrated among the material, not only has been incubated but also moistureproof the wet resistance factor 〉=5000;
(3), owing to added fire retardant, preservative etc., the plastic protective layer fire-retardant fireproof, oxygen index is up to more than 28; Anti-corrosion capacity is strong, protective layer tensile strength 〉=10 MPas, and the anti-intensity height that damages of resistance to compression, working life 〉=30 year are fit to building and wait the facility use.
(4), install simple and easyly, will improve project progress greatly, greatly reduce labor intensity.
The advantage of manufacturing process of the present invention:
(1) but the large-scale industrial production utilidor is applicable to the insulation of any metal tube Process, according to the pipe insulation requirement, capable of regulating technology changes insulation layer thickness, satisfying the market Requirement.
(2), manual pipe insulation mode, use machinery equipment production metal pipe with heat-insulating have been changed The road, technological parameter and consistency of performance are good, and quality is secure.
(3), manufacturing process is reasonable, structure of compound mould and molding mode uniqueness are utilized plastics Self hot melt hot pressing characteristic is carried out the once-combined moulding of trilaminate material, and product is stable.

Claims (5)

1, a kind of manufacture method of metal pipe with heat-insulating foamed plastic coating comprises the following steps:
Mud, dirt, greasy dirt are removed in 1>metal tube (1) surface treatment;
The preparation of 2>plastics blister layer raw material, mixing in extruder, heat fused, foaming;
The preparation of 3>plastic protective layer raw material, mixing, heat fused in extruder;
4>metal tube (1) preheating;
5>extruder is extruded the plastics foam of fusing and is pushed a compound plastics blister layer (2) with the surface of metal tube;
6>extruder is extruded the protective layer plastics of fusing, and is combined into one deck plastic protective layer (3) with foaming body layer plastic co-extrusion;
7>cooling and shaping.
It is characterized in that: the step of the 4th, the 5th, the 6th in the above-mentioned technology is one step completed in a composite machine head.
2, the manufacture method of metal pipe with heat-insulating foamed plastic coating according to claim 1, it is characterized in that said composite dies is by preceding locknut (01), plug (02), mould parent (03), foaming machine neck (04), big mouthful mould (05), back locknut (06), sandwich layer rod (07), body (08), osculum mould (09), sheath machine neck (013) and heater (015) are by lock screw (011) and the outer screw (012) of regulating, interior adjusting screw (014) connects to form, in mould parent (03), foaming machine neck (04), constitute foaming body runner (S1) between sandwich layer rod (07) and big mouthful of mould (05), in body (08), constitute sheath runner (S2) between sheath machine neck (013) and big mouthful of mould (05).
3; the manufacture method of metal pipe with heat-insulating foamed plastic coating according to claim 1 and 2; it is characterized in that: said metal tube (1) is under the preheating of heater (015); the plastics foam of fusing and foaming imports foaming body runner (S1) by extruder down by foaming machine neck (04) extruding; compound in the extruding of the surface of die orifice and metal tube (1); the fusing the protective layer plastics by extruder by extruding through sheath runner (S2) under the extruding of sheath machine neck (013); compound at die orifice and foaming layer plastic co-extrusion, once-through has metal tube (1); the metal pipe with heat-insulating foamed plastic coating of plastics blister layer (2) and plastic protective layer (3).
4, the manufacture method of metal pipe with heat-insulating foamed plastic coating according to claim 3, it is characterized in that: the body material of described plastics blister layer (2) can be PVC, polystyrene, polyethylene, polyurethane, polypropylene, or acrylonitrile butadient styrene, or ethylene-vinyl acetate copolymer.
5, the manufacture method of metal pipe with heat-insulating foamed plastic coating according to claim 3; it is characterized in that: the body material of described plastic protective layer (3) can be PVC, polystyrene, polyethylene, polyurethane, polypropylene; or acrylonitrile butadient styrene, or ethylene-vinyl acetate copolymer.
CN00115382A 2000-04-13 2000-04-13 Metal pipe with heat-insulating foamed plastic coating and its manufacture Expired - Fee Related CN1095533C (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN00115382A CN1095533C (en) 2000-04-13 2000-04-13 Metal pipe with heat-insulating foamed plastic coating and its manufacture

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN00115382A CN1095533C (en) 2000-04-13 2000-04-13 Metal pipe with heat-insulating foamed plastic coating and its manufacture

Publications (2)

Publication Number Publication Date
CN1267801A CN1267801A (en) 2000-09-27
CN1095533C true CN1095533C (en) 2002-12-04

Family

ID=4584836

Family Applications (1)

Application Number Title Priority Date Filing Date
CN00115382A Expired - Fee Related CN1095533C (en) 2000-04-13 2000-04-13 Metal pipe with heat-insulating foamed plastic coating and its manufacture

Country Status (1)

Country Link
CN (1) CN1095533C (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1303352C (en) * 2003-03-21 2007-03-07 上海久通塑胶制品有限公司 Metal pipe convered with foamed plastic for thermal insulation and its mfg. method

Families Citing this family (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101746034B (en) * 2009-12-30 2013-04-10 王远孔 Method for fabricating three-layer co-extruded composite section
CN102954293A (en) * 2012-11-11 2013-03-06 大连日盛实业有限公司 Small-size medium-high-temperature aluminum alloy and PVC (Polyvinyl Chloride) compound heat-insulating tube
CN103758439A (en) * 2014-01-20 2014-04-30 郑建祥 Steel-plastic co-extruded energy-saving profile full coated with hard PVC (polyvinyl chloride)
CN103883811A (en) * 2014-04-11 2014-06-25 苏州市依星橡塑有限公司 Cold-resistant plastic tube
CN105065792A (en) * 2015-07-31 2015-11-18 大禹节水(天津)有限公司 Cold-resistant high impact strength unplasticized polyvinyl chloride (PVC-U) composite pipe and preparation method thereof
CN105437490A (en) * 2015-12-08 2016-03-30 朗格斯特哈尔滨环保节能产品制造有限公司 Continuous production complete equipment of crosslinked polyethylene polyurethane thermal insulation pipe and production method
CN105383066A (en) * 2015-12-08 2016-03-09 朗格斯特哈尔滨环保节能产品制造有限公司 Continuous production device and method for straight pipe polyurethane thermal insulation pipes
CN106287112A (en) * 2016-08-11 2017-01-04 珠海格力电器股份有限公司 Heat insulation pipeline, processing method thereof and air conditioner
CN107314194A (en) * 2017-06-07 2017-11-03 海宁亚丰塑业有限公司 A kind of metal pipe with heat-insulating and its preparation technology
CN109130130B (en) * 2018-11-05 2023-12-15 福建亚通新材料科技股份有限公司 Composite pipe protective layer coating die
CN110171091A (en) * 2019-03-26 2019-08-27 江苏欣荣普尔斯机械有限公司 A kind of second time of foaming mold

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN2040208U (en) * 1987-09-02 1989-06-28 营口市示范消声器厂 Insulating polyurethane tube with outer plastic casing
EP0726134A1 (en) * 1995-02-13 1996-08-14 Wilhelm Hegler Method and apparatus for producing a thermoplastic multi layer pipe, especially from polyolefin
EP0768488A2 (en) * 1995-10-10 1997-04-16 Bundy Corporation Metal tubing coated with multiple layers of polymeric materials
CN2341001Y (en) * 1998-10-01 1999-09-29 于镇旗 Steel plastic composite pipe

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN2040208U (en) * 1987-09-02 1989-06-28 营口市示范消声器厂 Insulating polyurethane tube with outer plastic casing
EP0726134A1 (en) * 1995-02-13 1996-08-14 Wilhelm Hegler Method and apparatus for producing a thermoplastic multi layer pipe, especially from polyolefin
EP0768488A2 (en) * 1995-10-10 1997-04-16 Bundy Corporation Metal tubing coated with multiple layers of polymeric materials
CN2341001Y (en) * 1998-10-01 1999-09-29 于镇旗 Steel plastic composite pipe

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1303352C (en) * 2003-03-21 2007-03-07 上海久通塑胶制品有限公司 Metal pipe convered with foamed plastic for thermal insulation and its mfg. method

Also Published As

Publication number Publication date
CN1267801A (en) 2000-09-27

Similar Documents

Publication Publication Date Title
CN1095533C (en) Metal pipe with heat-insulating foamed plastic coating and its manufacture
US8021588B2 (en) Processes for forming a fiber-reinforced product
CN104893084A (en) Carbon fiber reinforced polyethylene waterproof roll and preparation method thereof
CN101186133A (en) Polymer composite heat resisting waterproof sheet and preparation method thereof
CN106564218A (en) Plastic composite board and forming equipment
CN106641585A (en) PPR insulating composite tube for home decoration and preparation method of composite tube
CN111844677A (en) Multilayer foamed recycled plastic and preparation method thereof
CN110271159A (en) A kind of manufacturing method of wallboard
US20140227485A1 (en) Composite profile and producing method thereof
CN102582186B (en) Hollow glass bead plastic composite building template and preparation method thereof
CN105024028A (en) Preparation method of three-layer composite lithium battery membrane
CN1169666C (en) Method for manufacturing steel-plastic composite pipe with zinc plated outside and polyethylene lined inside
CN105128323A (en) Composite reinforced winding-type pressure pipe and forming method thereof
CN102788198B (en) Multifunctional PP-R pipe and preparation method thereof
CN104760261B (en) A kind of preparation technology of PE super large calibers thick-wall tube
CN104385546B (en) PP and TPU composite double-layer hollow plastic plate coextrusion manufacture technology
CN103707482A (en) Polyolefin pipe with high strength and high oxygen barrier properties and preparation method thereof
CN109971074B (en) Multilayer co-extrusion composite hollow glass warm edge spacing bar and preparation method thereof
CN111231385A (en) Preparation process of multilayer steel wire winding modified polyethylene composite pipe
US3919386A (en) Method of rapidly forming hollow objects from reinforced plastic sheeting
CN104890340B (en) A kind of outdoor high-weatherability high intensity co-extruded plastic-wood composite floor board and its manufacturing process
CN101716819B (en) Method for producing roughened surface geomembrane
CN105415839A (en) Polyvinyl chloride co-extrusion wood-plastic plate and preparation method thereof
CN212072872U (en) Double-wall corrugated pipe production device
CN1629217A (en) Method for producing polymer-straw composite material pipe

Legal Events

Date Code Title Description
C10 Entry into substantive examination
SE01 Entry into force of request for substantive examination
C06 Publication
PB01 Publication
C14 Grant of patent or utility model
GR01 Patent grant
ASS Succession or assignment of patent right

Owner name: SHANGHAI BOYANG PLASTIC INDUSTRIAL CO., LTD.

Free format text: FORMER OWNER: CHEN RENCI; ZHOU BAOMAO; SHEN LIANG; CHEN ZHENGLIANG

Effective date: 20030214

C41 Transfer of patent application or patent right or utility model
TR01 Transfer of patent right

Effective date of registration: 20030214

Patentee after: Shanghai Boym Plastics Industry

Patentee before: Chen Renci

Patentee before: Zhou Baomao

Patentee before: Shen Liang

Patentee before: Chen Zhengliang

C17 Cessation of patent right
CF01 Termination of patent right due to non-payment of annual fee

Granted publication date: 20021204

Termination date: 20100413