CN1267801A - 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 PDFInfo
- Publication number
- CN1267801A CN1267801A CN 00115382 CN00115382A CN1267801A CN 1267801 A CN1267801 A CN 1267801A CN 00115382 CN00115382 CN 00115382 CN 00115382 A CN00115382 A CN 00115382A CN 1267801 A CN1267801 A CN 1267801A
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- heat
- metal pipe
- foamed plastic
- plastic coating
- insulating foamed
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- Extrusion Moulding Of Plastics Or The Like (AREA)
Abstract
The heat insulated metal pipe consists of a metal pipe, a foamed plastic layer and a protecting plastic layer and is produced through one single forming process, when the plastic for the foamed layer and the protecting layer is extruded by an extruder and composited via a compositing mold to the metal pipe. The heat insulated metal pipe has the advantages of high heat insulating effect, being moisture-proof and fireproof, long service life, etc. and the use of the pipe results in high installation speed and lowered labor strength.
Description
The present invention relates to metallic conduit, particularly a kind of metal pipe with heat-insulating foamed plastic coating and manufacturing process thereof.
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.
Now also have a kind of metallic conduit to overlap the structure of plastic material protective layer sleeve pipe, the heat insulation effect of this structure is also undesirable.The pipeline foaming body of artificial bag thermal insulation layer exposes outside it, insufficient strength, and easy damaged, heat insulation effect is bad.
Purpose of the present invention is exactly in order to overcome above-mentioned defective, and a kind of metal pipe with heat-insulating foamed plastic coating is provided, and creates conditions with the large-scale industrial production that realizes the metal tube heat-insulation and heat-preservation.
Metal pipe with heat-insulating foamed plastic coating of the present invention is characterized in from inside to outside that by metal tube plastic foam material layer and plastic protective layer constitute.
Described metal tube can be various metal tubes or metallic hose.
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 manufacturing process of described metal pipe with heat-insulating foamed plastic coating is characterized in that comprising the following steps:
1〉mud, dirt, greasy dirt are removed in metal tube surface treatment;
2〉plastics foam raw material preparation, mixing in extruder, heat fused, foaming;
3〉plastic protective layer raw material preparation, mixing, heat fused in extruder;
4〉metal tube preheating;
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.
In the above-mentioned technology the 4th, the 5th, the 6th step is one-time formed in composite dies.
Said composite dies is to be connected to form by screw and adjusting screw by locknut, plug, mould parent, machine neck, big mouthful mould, locknut, sandwich layer rod, body, osculum mould, machine neck and heater, between mould parent, machine neck, sandwich layer rod and big mouthful mould, constitute mold runner S1, between body, machine neck and big mouthful mould, constitute mold runner S2.
Said metal tube is under the preheating of heater; the plastics foam of fusing and foaming imports mold runner S1 by extruder down by the extruding of machine neck; the protective layer plastics of fusing import mold runner S2 down by the extruding that extruder passes through the machine neck; compound at die orifice and metal tube, once-through has the metal pipe with heat-insulating foamed plastic coating of metal tube, plastics blister layer and plastic protective layer.
The invention will be further described below in conjunction with drawings and Examples.
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---locknut 02---plug 03---mould parent
04---machine neck 05---big mouthful mould 06---locknut
07---sandwich layer rod 08---body 09---osculum mould
011---screw 012---adjusting screw 013---machine neck
014---adjusting screw 015---heater
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 manufacturing process of metal pipe with heat-insulating foamed plastic coating of the present invention comprises the following steps:
Processing such as mud, dirt, greasy dirt are removed on the metal tube surface; The preparation of plastics foam raw material, mixed in extruder, heat fused, foaming; The preparation of plastic protective layer raw material, mixed in extrusion press, heat fused; Metal tube gives heat; Extruder will melt that the plastics foam that foamed is extruded and be compound with the surface extruding of metal tube; Extruder is extruded the protective layer plastics of fusing, and compound with the foaming layer plastic co-extrusion; Cooling and shaping.
Fig. 2 is the structure cross-sectional schematic of composite dies in the manufacturing process of the present invention.This composite dies is by locknut 01; plug 02; mould parent 03; machine neck 04; big mouthful mould 05; locknut 06; sandwich layer rod 07; body 08; osculum mould 09; machine neck 013 and heater 015 are by screw 011 and adjusting screw 012; 014 is formed by connecting; at mould parent 03; machine neck 04; constitute mold runner S1 between sandwich layer rod 07 and the big mouthful mould 05; pass through the extruding current downflow of machine neck 04 owing to extruder for the expandable plastic of fusing; at body 08; constitute mold runner S2 between 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 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 insulation pipe is applicable to that the insulation of any metal tube is handled, according to the pipe insulation requirement, but adjusting process changes insulation layer thickness, satisfies market demands.
(2), changed manual pipe insulation mode, use machinery equipment to produce the metal pipe with heat-insulating road, process parameter and consistency of performance are good, quality is secure.
(3), manufacturing process is reasonable, composite dies structure and molding mode uniqueness utilize plastics self hot melt hot pressing characteristic to carry out the once-combined moulding of trilaminate material, product is stable.
Claims (8)
1, a kind of metal pipe with heat-insulating foamed plastic coating is characterized in that also having plastics blister layer (2) between metal tube (1) and the plastic protective layer outside it (3).
2, metal pipe with heat-insulating foamed plastic coating according to claim 1 is characterized in that: described metal tube (1) can be various metal tubes or metallic hose.
3, metal pipe with heat-insulating foamed plastic coating according to claim 1, 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.
4. metal pipe with heat-insulating foamed plastic coating according to claim 1; 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.
5, the manufacturing process of metal pipe with heat-insulating foamed plastic coating according to claim 1 is characterized in that comprising the following steps:
1〉mud, dirt, greasy dirt are removed in metal tube surface treatment;
2〉plastics foam raw material preparation, mixing in extruder, heat fused, foaming;
3〉plastic protective layer raw material preparation, mixing, heat fused in extruder;
4〉metal tube preheating;
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.
6, the manufacturing process of metal pipe with heat-insulating foamed plastic coating according to claim 5 is characterized in that: the step of the 4th, the 5th, the 6th in the above-mentioned technology is one step completed in composite dies.
7, the manufacturing process of metal pipe with heat-insulating foamed plastic coating according to claim 6, it is characterized in that said composite dies is by locknut (01), plug (02), mould parent (03), machine neck (04), big mouthful mould (05), locknut (06), sandwich layer rod (07), body (08), osculum mould (09), machine neck (013) and heater (015) are by screw (011) and adjusting screw (012,014) connects to form, in mould parent (03), constitute mold runner (S1) between machine neck (04) sandwich layer rod (07) and big mouthful of mould (05), in body (08), constitute mold runner (S2) between machine neck (013) and big mouthful of mould (05).
8, the manufacturing process of metal pipe with heat-insulating foamed plastic coating according to claim 7; it is characterized in that: said metal tube (1) is under the preheating of heater (015); the plastics foam of fusing and foaming imports mold runner (S1) by extruder down by machine neck (04) extruding; the protective layer plastics of fusing import mold runner (S2) down by the extruding that extruder passes through machine neck (013); compound at die orifice and metal tube (1), once-through has the metal pipe with heat-insulating foamed plastic coating of metal tube (1), plastics blister layer (2) and plastic protective layer (3).
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 true CN1267801A (en) | 2000-09-27 |
| CN1095533C CN1095533C (en) | 2002-12-04 |
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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 |
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| CN (1) | CN1095533C (en) |
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| CN101746034B (en) * | 2009-12-30 | 2013-04-10 | 王远孔 | Method for fabricating three-layer co-extruded composite section |
| 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 |
| 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 |
| 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 |
| CN106287112A (en) * | 2016-08-11 | 2017-01-04 | 珠海格力电器股份有限公司 | A kind of utilidor and processing method, 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 |
| CN109130130A (en) * | 2018-11-05 | 2019-01-04 | 福建亚通新材料科技股份有限公司 | A kind of multiple tube protective layer covers painting mold |
| 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 |
Families Citing this family (1)
| 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 |
Family Cites Families (4)
| 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 |
| DE19504501A1 (en) * | 1995-02-13 | 1996-08-14 | Wilhelm Hegler | Process and plant for producing a multilayer pipe made of thermoplastic, in particular polyolefin |
| CA2186519A1 (en) * | 1995-10-10 | 1997-04-11 | Henry S. Hsich | Metal tubing coated with multiple layers of polymeric materials |
| CN2341001Y (en) * | 1998-10-01 | 1999-09-29 | 于镇旗 | Steel plastic composite pipe |
-
2000
- 2000-04-13 CN CN00115382A patent/CN1095533C/en not_active Expired - Fee Related
Cited By (12)
| 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 |
| 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 |
| 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 |
| CN106287112A (en) * | 2016-08-11 | 2017-01-04 | 珠海格力电器股份有限公司 | A kind of utilidor and processing method, 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 |
| CN109130130A (en) * | 2018-11-05 | 2019-01-04 | 福建亚通新材料科技股份有限公司 | A kind of multiple tube protective layer covers painting mold |
| 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 |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1095533C (en) | 2002-12-04 |
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Legal Events
| Date | Code | Title | Description |
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| 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 |
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| 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 |
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| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20021204 Termination date: 20100413 |