CN102252148A - Anti-corrosion heat-shrinkable sleeve for joint-coating of engineering pipeline - Google Patents
Anti-corrosion heat-shrinkable sleeve for joint-coating of engineering pipeline Download PDFInfo
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- CN102252148A CN102252148A CN2010101752318A CN201010175231A CN102252148A CN 102252148 A CN102252148 A CN 102252148A CN 2010101752318 A CN2010101752318 A CN 2010101752318A CN 201010175231 A CN201010175231 A CN 201010175231A CN 102252148 A CN102252148 A CN 102252148A
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Abstract
The invention discloses an anti-corrosion heat-shrinkable sleeve for joint-coating of an engineering pipeline. The anti-corrosion heat-shrinkable sleeve is formed by butting the head and tail of a heat-shrinkable band sheet into a tube, wherein the heat-shrinkable band sheet consists of a heat-shrinkable base material outer layer and a hot melting inner layer which is coated on an inner surface of the heat-shrinkable base material outer layer; and the head and tail of the heat-shrinkable band sheet are sewn on a fixed sheet. In the shrinkage and usage processes of the anti-corrosion heat-shrinkable sleeve, cracking resistance is good, and the quality problems of cracking, edge-warping and the like are difficult to occur at a butting position; and a seam can be fully heated, slippage is avoided, and hot melt adhesives of a seam part and other parts of the heat-shrinkable sleeve can be fully melted, so the whole sealing anti-corrosion performance can be improved. The anti-corrosion heat-shrinkable sleeve for the joint-coating of the engineering pipeline is simple in process, environment-friendly, energy-saving, low in processing cost and good in quality stability.
Description
Technical field
The present invention relates to heat-contraction sleeve, particularly the engineering pipeline anticorrosive heat shrink sleeve for mouth-repairing.
Background technique
In the prior art, the structure of engineering pipeline anticorrosive heat shrink sleeve for mouth-repairing pipe generally is to be made of pyrocondensation base material skin and hot melt adhesive internal layer, and two kinds of forms of pyrocondensation belt and thermal shrinkable sleeve are specifically arranged again.
Characteristics such as pyrocondensation belt has the manufacturing efficiency height, and is easy for installation, but the pyrocondensation belt overlapping part adopts the fixed plate mode fixing at the construction field (site) usually.Because fixed plate internal layer hot melt adhesive and pyrocondensation belt shear strength at high temperature are lower, when the pyrocondensation belt heat shrink, flame usually will be away from the fixed plate lap position, to prevent the overlapping part slippage.The problem of bringing like this is that the heat-fusing glue layer of overlapping part is difficult to fully fusing, and it is poor to cause with the bonding force of basic unit, becomes pyrocondensation belt the weakest bonding position.Occurring from then in long-term using process easily, the position produces infiltration and corrosion.
Its molding mode of thermal shrinkable sleeve mainly be by raw material by granulation, pipe extruded, irradiation, add operations such as thermal enlargement, gluing and produce.Adopt this mode, be difficult to produce the bigger heat-contraction sleeve of diameter, and manufacturing efficiency is low, operation is loaded down with trivial details, yield rate is low, and mechanization degree is low, and the product internal stress is big, shrinks to occur the cracking quality problems when installing easily.
Utilizing the thermal shrinkable sleeve that the moderate shrink belt of internal stress is processed into tubulose is an approach that overcomes the above problems.Because the polyethylene pyrocondensation belt material of cross-linking radiation has good, the infusible characteristics of heat resistance, the welding of pyrocondensation belt is very difficult.Adopt ultrasonic welding method among the Chinese patent CN1664431A, realized the welding of pyrocondensation belt dot type.But existing ultrasonic fusing type thermal shrinkable sleeve, because welding control difficulty height, mass stability is poor, seam crossing is easy to occur cracking.And existing energy consumption height, ultrasound to problems such as employee's physical effects are big, this technology is difficult to promote in actual applications.
Summary of the invention
Purpose of the present invention is intended to overcome above-mentioned deficiency of the prior art, and a kind of engineering pipeline repaired mouth that is used for is provided, and adopt shrink belt to be processed into thermal shrinkable sleeve, and processing method is simple, and energy consumption is low, the reliable engineering pipeline anticorrosive heat shrink sleeve for mouth-repairing of steady quality.
Solution of the present invention is: a kind of engineering pipeline anticorrosive heat shrink sleeve for mouth-repairing, by shrink belt sheet material head and the tail to being connected into tubular shape, wherein the shrink belt sheet material is made of pyrocondensation base material skin, the hot melt adhesive internal layer that is coated on the outer internal surface of pyrocondensation base material, is characterized in that the head and the tail of shrink belt sheet material are sewn on the fixed plate.Strong in the solution of the present invention owing to shrink belt sheet material plasticity, the head and the tail that can easily the shrink belt sheet material be docked by fixed plate are fixed on the fixed plate, make the shrink belt sheet forming become shrink sleeve on the one hand, fixed plate gets lodged in head and the tail butt-welded side seam place on the other hand, plays seal action.
The shrink belt sheet material docks from beginning to end and can adopt the outer butt joint mutually of pyrocondensation base material in the solution of the present invention, and the hot melt adhesive internal layer docks mutually.
Stitching thread is IXPE silk or nylon thread or carbon fiber in the solution of the present invention.
The fixed plate employing is made up of fixed plate base material skin and fixed plate hot melt adhesive internal layer in the solution of the present invention.
Fixed plate in the solution of the present invention (3) is the outer surface that is overlapped on pyrocondensation base material skin (1) head and the tail joint.
Described fixed plate (3) is made up of fixed plate base material skin (4) and hot melt adhesive internal layer (5), fixed plate (3) in length and breadth to shrinkage less than 5%, fixed plate base material skin (4) is to be made behind compression molding and cross-linking radiation by polyethylene, between 0.5mm～1.0mm, hot melt adhesive internal layer (5) thickness is preferably between 0.3mm～0.7mm preferably for its thickness.
In the technical solution of the present invention: described heatproof stitching thread is preferably radiant crosslinked polyethylene line, nylon thread or carbon fiber etc.
The fixed plate that the present invention cuts the head and the tail butt joint of shrink belt and overlap joint by the industrial sewing machine of special use to branch is sewed up and is become heat-contraction sleeve.
Compared with prior art, advantage of the present invention is:
(1) heat-shrinkable T bush is in contraction and using process, and splitting resistance is good, is not easy to occur quality problems such as cracking, alice at joint;
(2) during the heat-shrinkable T bush heat shrink, seam crossing can fully heat, and slippage does not appear, can guarantee the same can fully fusing of other position hot melt adhesive of seam areas hot melt adhesive and heat-contraction sleeve, thereby can guarantee that thermal contraction casing tube integral sealing antiseptic property can be improved significantly.
(3) simple, the environmental protection and energy saving of processing technology, processing cost is low, mass stability good.
Description of drawings
Fig. 1 is a structural representation of the present invention;
Fig. 2 is that schematic representation is sewed up in pyrocondensation belt sheet material butt joint of the present invention.
Embodiment
The embodiment of the invention is as shown in the figure:
Among Fig. 1, the engineering pipeline anticorrosive heat shrink sleeve for mouth-repairing is combined on the fixed plate 3 by shrink belt sheet material head and the tail butt joint and forms, fixed plate 3 is the outer surfaces that are overlapped on the outer 1 head and the tail joint of pyrocondensation base material, and stitching thread 6 is to be sewn to the inner end of heat-contraction sleeve topmost from fixed plate 3.Wherein the shrink belt sheet material is made of pyrocondensation base material skin 1, the hot melt adhesive internal layer 2 that is coated on the outer internal surface of pyrocondensation base material.Fixed plate 3 is made of base material outer 4 and hot melt adhesive internal layer 5, fixed plate 3 in length and breadth to shrinkage less than 5%, the base material skin 4 of fixed plate 3 is to be made behind compression molding and cross-linking radiation by polyethylene, and its thickness is between 0.5mm～1.0mm, and hot melt adhesive internal layer 5 thickness are between 0.3mm～0.7mm.The shrink belt sheet material docks from beginning to end and adopts pyrocondensation base material skin 1 butt joint mutually, and hot melt adhesive internal layer 2 docks mutually.The stitching thread 6 that the shrink belt sheet material is sewn on the fixed plate 3 is IXPE silks
Claims (6)
1. engineering pipeline anticorrosive heat shrink sleeve for mouth-repairing, by shrink belt sheet material head and the tail to being connected into tubular shape, wherein the shrink belt sheet material is made of pyrocondensation base material skin (1), the hot melt adhesive internal layer (2) that is coated on pyrocondensation base material skin (1) internal surface, it is characterized in that the head and the tail of shrink belt sheet material are sewn on the fixed plate (3).
2. engineering pipeline anticorrosive heat shrink sleeve for mouth-repairing according to claim 1 is characterized in that pyrocondensation base material skin (1) butt joint mutually, and hot melt adhesive internal layer (2) is butt joint mutually.
3. engineering pipeline anticorrosive heat shrink sleeve for mouth-repairing according to claim 1 is characterized in that stitching thread (6) is IXPE silk or nylon thread or carbon fiber.
4. engineering pipeline anticorrosive heat shrink sleeve for mouth-repairing according to claim 1 is characterized in that fixed plate (3) is made up of fixed plate base material skin (4) and fixed plate hot melt adhesive internal layer (5).
5. engineering pipeline anticorrosive heat shrink sleeve for mouth-repairing according to claim 4, it is characterized in that fixed plate base material skin (4) be by polythene material through compression molding, behind cross-linking radiation, make again.
6. engineering pipeline anticorrosive heat shrink sleeve for mouth-repairing according to claim 1 is characterized in that fixed plate (3) is the outer surface that is overlapped on pyrocondensation base material skin (1) head and the tail joint.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010101752318A CN102252148A (en) | 2010-05-18 | 2010-05-18 | Anti-corrosion heat-shrinkable sleeve for joint-coating of engineering pipeline |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010101752318A CN102252148A (en) | 2010-05-18 | 2010-05-18 | Anti-corrosion heat-shrinkable sleeve for joint-coating of engineering pipeline |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102252148A true CN102252148A (en) | 2011-11-23 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010101752318A Pending CN102252148A (en) | 2010-05-18 | 2010-05-18 | Anti-corrosion heat-shrinkable sleeve for joint-coating of engineering pipeline |
Country Status (1)
| Country | Link |
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| CN (1) | CN102252148A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104110556A (en) * | 2013-04-17 | 2014-10-22 | 中国石油天然气股份有限公司 | Joint coating repairing anticorrosion layer structure for in-service pipeline |
| CN105221856A (en) * | 2015-10-30 | 2016-01-06 | 成都长江热缩材料有限公司 | Based on the pyrocondensation pipe improving working life |
| CN106287110A (en) * | 2016-08-17 | 2017-01-04 | 安徽兴源塑料包装有限公司 | A kind of thermal contraction gum cover of MULTILAYER COMPOSITE |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0023788A1 (en) * | 1979-07-19 | 1981-02-11 | RAYCHEM CORPORATION (a California corporation) | Arrangement and method for covering elongate substrates |
| EP0445445A1 (en) * | 1989-03-06 | 1991-09-11 | The Kendall Company | Novel closure device for shrinkwraps |
| DE4039276A1 (en) * | 1990-12-08 | 1992-06-11 | Stewing Gmbh & Co Kg | Versatile heat-shrink plastic covering - has sliding clasp fastener attached to its edges e.g. by sewing on with heat-resistant thread, to be easily unfastened again when desired |
| CN1664431A (en) * | 2005-03-25 | 2005-09-07 | 四川久远科技股份有限公司 | Anticorrosive heat shrink sleeve for mouth-repairing for welding engineering pipeline |
-
2010
- 2010-05-18 CN CN2010101752318A patent/CN102252148A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0023788A1 (en) * | 1979-07-19 | 1981-02-11 | RAYCHEM CORPORATION (a California corporation) | Arrangement and method for covering elongate substrates |
| EP0445445A1 (en) * | 1989-03-06 | 1991-09-11 | The Kendall Company | Novel closure device for shrinkwraps |
| DE4039276A1 (en) * | 1990-12-08 | 1992-06-11 | Stewing Gmbh & Co Kg | Versatile heat-shrink plastic covering - has sliding clasp fastener attached to its edges e.g. by sewing on with heat-resistant thread, to be easily unfastened again when desired |
| CN1664431A (en) * | 2005-03-25 | 2005-09-07 | 四川久远科技股份有限公司 | Anticorrosive heat shrink sleeve for mouth-repairing for welding engineering pipeline |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104110556A (en) * | 2013-04-17 | 2014-10-22 | 中国石油天然气股份有限公司 | Joint coating repairing anticorrosion layer structure for in-service pipeline |
| CN104110556B (en) * | 2013-04-17 | 2017-05-10 | 中国石油天然气股份有限公司 | Joint coating repairing anticorrosion layer structure for in-service pipeline |
| CN105221856A (en) * | 2015-10-30 | 2016-01-06 | 成都长江热缩材料有限公司 | Based on the pyrocondensation pipe improving working life |
| CN106287110A (en) * | 2016-08-17 | 2017-01-04 | 安徽兴源塑料包装有限公司 | A kind of thermal contraction gum cover of MULTILAYER COMPOSITE |
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Application publication date: 20111123 |