CN108340592A - A kind of polyethylene enhancing spiral winding bellows processing method - Google Patents
A kind of polyethylene enhancing spiral winding bellows processing method Download PDFInfo
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- CN108340592A CN108340592A CN201810108378.1A CN201810108378A CN108340592A CN 108340592 A CN108340592 A CN 108340592A CN 201810108378 A CN201810108378 A CN 201810108378A CN 108340592 A CN108340592 A CN 108340592A
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- CN
- China
- Prior art keywords
- polyethylene
- spiral winding
- enhances
- profile shapes
- enhancing
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- 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.)
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
- B29C48/001—Combinations of extrusion moulding with other shaping operations
- B29C48/0019—Combinations of extrusion moulding with other shaping operations combined with shaping by flattening, folding or bending
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
- B29C48/03—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor characterised by the shape of the extruded material at extrusion
- B29C48/12—Articles with an irregular circumference when viewed in cross-section, e.g. window profiles
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
- B29C48/15—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor incorporating preformed parts or layers, e.g. extrusion moulding around inserts
- B29C48/151—Coating hollow articles
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C53/00—Shaping by bending, folding, twisting, straightening or flattening; Apparatus therefor
- B29C53/56—Winding and joining, e.g. winding spirally
- B29C53/58—Winding and joining, e.g. winding spirally helically
- B29C53/581—Winding and joining, e.g. winding spirally helically using sheets or strips consisting principally of plastics material
- B29C53/582—Winding and joining, e.g. winding spirally helically using sheets or strips consisting principally of plastics material comprising reinforcements, e.g. wires, threads
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C53/00—Shaping by bending, folding, twisting, straightening or flattening; Apparatus therefor
- B29C53/56—Winding and joining, e.g. winding spirally
- B29C53/58—Winding and joining, e.g. winding spirally helically
- B29C53/583—Winding and joining, e.g. winding spirally helically for making tubular articles with particular features
- B29C53/584—Winding and joining, e.g. winding spirally helically for making tubular articles with particular features having a non-circular cross-section
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C53/00—Shaping by bending, folding, twisting, straightening or flattening; Apparatus therefor
- B29C53/56—Winding and joining, e.g. winding spirally
- B29C53/58—Winding and joining, e.g. winding spirally helically
- B29C53/60—Winding and joining, e.g. winding spirally helically using internal forming surfaces, e.g. mandrels
- B29C53/62—Winding and joining, e.g. winding spirally helically using internal forming surfaces, e.g. mandrels rotatable about the winding axis
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
- B29K2023/00—Use of polyalkenes or derivatives thereof as moulding material
- B29K2023/04—Polymers of ethylene
- B29K2023/06—PE, i.e. polyethylene
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Rigid Pipes And Flexible Pipes (AREA)
Abstract
A kind of polyethylene enhancing spiral winding bellows processing method, belongs to plumbing tubing field；Processing method is trilaminate material spiral winding bonding connection composition, and Synchronous Heating bonding is wound, the online molding of integration, and tubing after molding has effects that polyethylene enhancing profile shapes enhances, and attenuating tubing cost improves tubing intensity.It can be widely used in tubing field.
Description
Technical field
The invention pertains to water drainage plastics tubing fields more particularly to polyethylene to enhance spiral winding bellows supplying drainage
Material processing method.
Background technology
With carrying forward vigorously for Urbanization Construction, the technological innovation in plumbing field is also maked rapid progress therewith.It is published
Patent：Hollow two flat walls plastic-steel spirally-wound pipe, notification number：203052005 U of CN are disclosed by several annular polyethylene plastic steels
Strip is spliced by linear low density polyethylene (LLDPE) primer, has ring stiffener between the outer wall and inner wall, etc..It is another
A published patent：A kind of hollow double-walled plastic-steel-wound drainage pipe production equipment of heavy caliber, notification number：CN 202702609
U discloses a kind of heavy caliber hollow double-walled plastic-steel-wound drainage pipe production equipment, including rack, heater, strip bracket etc.,
The integrated prefabricated storage for being formed without material online, has saved carrying cost and transportation cost.It is found after use disclosed above
The common shortcoming of product plastic-steel spirally-wound pipe of patent has：Steel band with vinyon simultaneously heat welding it is Wrapping formed, because of steel
Band is different with the material of vinyon, and the stress concentration when winding bending is different from vinyon for steel band, linear expansion coefficient
Difference, fatigue resistance is different, is transporting, and installs, in use, easy ting produce tubing inside and outside wall plastics cracking, the exposed rust of steel band
, there are leak, the qualitative problems of construction such as reduced service life in erosion.
Invention content
For overcome existing polyvinyl piping materials adhesive joins intensity shortcoming and solve stress concentration it is different not
Foot place invents a kind of polyethylene enhancing spiral winding bellows processing method.
A kind of polyethylene enhancing spiral winding bellows processing method, the polyethylene enhance spiral winding bellows by interior
Strata ethylene, polyethylene enhance profile shapes, outer layer polyethylene composition；Polyethylene enhancing spiral winding bellows process equipment is packet
Polyethylene enhancing profile extruder is included, polyethylene enhances profile shapes mold, and polyethylene enhances profile shapes, Vacuum shaping cooling water
Case, dragger, polyethylene inner sheet extruder, polyethylene inner sheet, hot air heating apparatus, polyethylene outer plate extruder, outside polyethylene
Piece winds rack, radial pinch roller, axial baffle, tubing pitch adjustment means, winding roller drive arrangement, chain tension gear, winding
Roller, wrapping machine main shaft, vacuum pump, water pump, outer layer polyethylene, inner layer polyethylene, reinforcing rib；Polyethylene enhances spiral winding ripple
Pipe procedure of processing is as follows：
Step 1：The extrusion winding production line for checking polyethylene enhancing spiral winding bellows opens after meeting safety in production requirement
Dynamic power supply, polyethylene inner sheet extruder squeeze out on melting state polyethylene inner sheet to winding roller, under the action of temperature and pressure, melt
Melt polyethylene inner sheet spiral winding forms inner layer polyethylene；
Step 2：Polyethylene enhancing profile shapes shaping cover is mounted in Vacuum shaping cooling water tank, polyethylene enhances profile shapes
Melting state polyethylene is squeezed out the polyethylene with reinforcing rib by extruder by mold enhances profile shapes, and polyethylene enhances profile shapes
Through Vacuum shaping cooling water tank cooling and shaping, polyethylene enhancing profile shapes is continuously pulled out by Vacuum shaping cooling using dragger
Water tank is simultaneously sent into wrapping machine, and the inner layer polyethylene outer surface on wrapping machine enhances the bottom surface of profile shapes in temperature with polyethylene
Synchronous screw winds bonding connection under the action of degree and pressure；
Step 3：Polyethylene outer plate extruder squeezes out melting state polyethylene outer plate, under the action of temperature and pressure, spiral winding
It is coated on the outer surface of polyethylene enhancing profile shapes and inner layer polyethylene, finally in winding roller, radial pinch roller, axial baffle
Polyethylene enhancing spiral winding bellows is shaped under collective effect；
Step 4：After polyethylene enhances spiral winding bellows according to customer order requirement length cutting, deburring is examined, qualified
Polyethylene enhancing spiral winding bellows enter warehouse for finished product.
The polyethylene enhancing spiral winding bellows is to wind bonding connection clockwise.
Or, the polyethylene enhancing spiral winding bellows is counterclockwise to wind bonding connection.
The distinguishing feature of polyethylene enhancing spiral winding bellows processing method of the present invention and technological progress are：Technology path
It is designed to three-layer polyethylene plastic spiral winding bonding connection to form, the material of inner layer polyethylene and outer layer polyethylene is poly- second
The material of alkene virgin material, polyethylene enhancing profile shapes is the modified recycled polyethylene of recovery processing；Synchronous Heating bonding winding,
Integrated online molding, tubing after molding have effects that polyethylene enhancing profile shapes enhances, and overcome the synchronous bending production of steel modeling
The linear expansion coefficient of raw different materials is different, and fatigue resistance is different, is transporting, and installs, in use, tubing inside and outside wall plastics
There is the shortcomings that leak, reduced service life in cracking, the exposed corrosion of steel band；That realizes has the technical effect that reduction tubing cost, carries
High tubing compression strength and service life.
Description of the drawings
Winding polyethylene enhances spiral winding bellows structure schematic diagram to Fig. 1 clockwise.
Winding polyethylene enhances spiral winding bellows A enlarged structure schematic diagrams to Fig. 2 clockwise.
Fig. 3 polyethylene enhances spiral winding bellows clockwise direction wrapping machine structural schematic diagram.
Fig. 4 polyethylene enhances profile shapes sector sizing dragger structural schematic diagram.
Fig. 5 polyethylene enhances profile shapes cross section B-B enlarged structure schematic diagram.
Counterclockwise winding polyethylene enhances spiral winding bellows structure schematic diagram to Fig. 6.
Fig. 7 polyethylene enhances spiral winding bellows counter clockwise direction wrapping machine structural schematic diagram.
In figure：Polyethylene enhances profile extruder 1, and polyethylene enhances profile shapes mold 2, and polyethylene enhances profile shapes 3,
Vacuum shaping cooling water tank 4, dragger 5, polyethylene inner sheet extruder 6, polyethylene inner sheet 7, hot air heating apparatus 8, polyethylene
Outer plate extruder 9, polyethylene outer plate 10, winding rack 11, radial pinch roller 12, axial baffle 13, tubing pitch adjustment means 14,
Wind roller drive arrangement 15, chain tension gear 16, winding roller 17, wrapping machine main shaft 18, vacuum pump 19, water pump 20, outer strata second
Alkene 21, inner layer polyethylene 22, reinforcing rib 23.
Specific implementation mode
In building site or the workshop implementation processing patent of the present invention for needing polyethylene to enhance spiral winding bellows.
Embodiment one,
A kind of polyethylene enhances spiral winding bellows, the polyethylene enhancing spiral winding bellows by inner layer polyethylene 22,
Polyethylene enhances profile shapes 3, and outer layer polyethylene 21 forms；Polyethylene enhancing spiral winding bellows connection relation be：Internal layer
The bottom surface of 22 outer surface of polyethylene and polyethylene enhancing profile shapes 3 winds bonding connection, and polyethylene enhances the outer of profile shapes 3
Surface and the inner surface of outer layer polyethylene 21 wind bonding connection.
The cross section of the polyethylene enhancing profile shapes 3 is fan shape, and upper surface is semi arch, and bottom surface is flat
, in fan-shaped hollow setting reinforcing rib 23.
The reinforcing rib 23 refers to the reinforcement in the 3 fan-shaped hollow setting at least one or more of polyethylene enhancing profile shapes
Muscle 23.
The material of the inner layer polyethylene 22 and outer layer polyethylene 21 is polyethylene virgin material.
The material of the polyethylene enhancing profile shapes 3 is the modified recycled polyethylene of recovery processing.
Polyethylene enhancing spiral winding bellows is to wind bonding connection clockwise, or counterclockwise wind viscous
It connects in succession.
Polyethylene enhances the extrusion winding production line of spiral winding bellows, and it includes polyethylene enhancing to squeeze out winding production line
Profile extruder 1, polyethylene enhance profile shapes mold 2, and polyethylene enhances profile shapes 3, Vacuum shaping cooling water tank 4, traction
Machine 5, polyethylene inner sheet extruder 6, polyethylene inner sheet 7, hot air heating apparatus 8, polyethylene outer plate extruder 9, polyethylene outer plate
10, wind rack 11, radial pinch roller 12, axial baffle 13, tubing pitch adjustment means 14, winding roller drive arrangement 15, chain
Tensioning wheel 16, winding roller 17, wrapping machine main shaft 18, vacuum pump 19, water pump 20, outer layer polyethylene 21, inner layer polyethylene 22 are reinforced
Muscle 23.
Polyethylene enhancing spiral winding bellows processing method be：
Method and step one：The extrusion winding production line for checking polyethylene enhancing spiral winding bellows meets safety in production and requires
Afterwards, startup power supply, polyethylene inner sheet extruder 6 squeeze out melting state polyethylene inner sheet 7 to winding roller 17, in temperature and pressure
Under effect, 7 spiral winding of melting state polyethylene inner sheet forms inner layer polyethylene 22.
Method and step two：Polyethylene enhancing 3 shaping cover of profile shapes is mounted in Vacuum shaping cooling water tank 4, polyethylene
Enhance 3 extruder of profile shapes and melting state polyethylene is squeezed out into the polyethylene enhancing profile shapes 3 with reinforcing rib 23 by mold, gathers
Ethylene enhances profile shapes 3 through 4 cooling and shaping of Vacuum shaping cooling water tank, and polyethylene is enhanced profile shapes 3 continuously using dragger
It pulls out Vacuum shaping cooling water tank 4 and is sent into wrapping machine, 22 outer surface of inner layer polyethylene on wrapping machine increases with polyethylene
The bottom surface of strong profile shapes 3 synchronous screw under the action of temperature and pressure winds bonding connection.
Method and step three：Polyethylene outer plate extruder 9 squeezes out melting state polyethylene outer plate 10, in the effect of temperature and pressure
Under, spiral winding is coated on the outer surface of polyethylene enhancing profile shapes 3 and inner layer polyethylene 22, finally in winding roller 17, diameter
To pinch roller 12, polyethylene enhancing spiral winding bellows is shaped under the collective effect of axial baffle 13.
Method and step four：After polyethylene enhances spiral winding bellows according to customer order requirement length cutting, deburring, inspection
It tests, qualified polyethylene enhancing spiral winding bellows enters warehouse for finished product.
Embodiment two,
The process equipment that polyethylene enhances spiral winding bellows is clockwise direction wrapping machine.
The reinforcing rib 23 refer in fan-shaped hollow of polyethylene enhancing profile shapes according to fan shaped cross section symmetrically and evenly
Two reinforcing ribs 23 are set.
Remaining is same as above, and repeats no more.
Embodiment three,
The process equipment that polyethylene enhances spiral winding bellows is counter clockwise direction wrapping machine.
The reinforcing rib 23 refer in fan-shaped hollow of polyethylene enhancing profile shapes according to fan shaped cross section symmetrically and evenly
A piece reinforcing rib 23 is set.
Remaining is same as above, and repeats no more.
The above processing method be combine specific embodiment to the further description done of the present invention, and it cannot be said that
The specific implementation of the present invention is confined to these explanations.For those of ordinary skill in the art to which the present invention belongs, exist
Under the premise of not departing from present inventive concept, a number of simple deductions or replacements can also be made, all shall be regarded as belonging to the present invention's
Protection domain.
Claims (3)
1. a kind of polyethylene enhances spiral winding bellows processing method, it is characterised in that：The polyethylene enhances spiral winding
Ripple
For pipe by inner layer polyethylene, polyethylene enhances profile shapes, outer layer polyethylene composition；Polyethylene enhancing spiral winding bellows adds
Construction equipment be include polyethylene enhancing profile extruder, polyethylene enhance profile shapes mold, polyethylene enhance profile shapes, vacuum
Sizing cooling water tank, dragger, polyethylene inner sheet extruder, polyethylene inner sheet, hot air heating apparatus, polyethylene outer plate squeeze out
Machine, polyethylene outer plate wind rack, radial pinch roller, axial baffle, tubing pitch adjustment means, winding roller drive arrangement, chain
Tensioning wheel, winding roller, wrapping machine main shaft, vacuum pump, water pump, outer layer polyethylene, inner layer polyethylene, reinforcing rib；Polyethylene enhances
Spiral winding bellows procedure of processing is as follows：
Step 1：The production equipment for checking polyethylene enhancing spiral winding bellows starts electricity after meeting safety in production requirement
Source, polyethylene inner sheet extruder squeezes out on melting state polyethylene inner sheet to winding roller, under the action of temperature and pressure, melting state
Polyethylene inner sheet spiral winding forms inner layer polyethylene；
Step 2：Polyethylene enhancing profile shapes shaping cover is mounted in Vacuum shaping cooling water tank, polyethylene enhances profile shapes
Melting state polyethylene is squeezed out the polyethylene with reinforcing rib by extruder by mold enhances profile shapes, and polyethylene enhances profile shapes
Through Vacuum shaping cooling water tank cooling and shaping, polyethylene enhancing profile shapes is continuously pulled out by Vacuum shaping cooling using dragger
Water tank is simultaneously sent into wrapping machine, and the inner layer polyethylene outer surface on wrapping machine enhances the bottom surface of profile shapes in temperature with polyethylene
Synchronous screw winds bonding connection under the action of degree and pressure；
Step 3：Polyethylene outer plate extruder squeezes out melting state polyethylene outer plate, under the action of temperature and pressure, spiral winding
It is coated on the outer surface of polyethylene enhancing profile shapes and inner layer polyethylene, finally in winding roller, radial pinch roller, axial baffle
Polyethylene enhancing spiral winding bellows is shaped under collective effect；
Step 4：After polyethylene enhances spiral winding bellows according to customer order requirement length cutting, deburring is examined, qualified
Polyethylene enhancing spiral winding bellows enter warehouse for finished product.
2. a kind of polyethylene as described in claim 1 enhances spiral winding bellows processing method, it is characterised in that：Institute
The polyethylene enhancing spiral winding bellows stated is to wind bonding connection clockwise.
3. a kind of polyethylene as described in claim 1 enhances spiral winding bellows processing method, it is characterised in that：Institute
The polyethylene enhancing spiral winding bellows stated is counterclockwise to wind bonding connection.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810108378.1A CN108340592A (en) | 2018-02-02 | 2018-02-02 | A kind of polyethylene enhancing spiral winding bellows processing method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810108378.1A CN108340592A (en) | 2018-02-02 | 2018-02-02 | A kind of polyethylene enhancing spiral winding bellows processing method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108340592A true CN108340592A (en) | 2018-07-31 |
Family
ID=62958910
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810108378.1A Pending CN108340592A (en) | 2018-02-02 | 2018-02-02 | A kind of polyethylene enhancing spiral winding bellows processing method |
Country Status (1)
| Country | Link |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110307404A (en) * | 2019-08-02 | 2019-10-08 | 贵州兴四通塑胶有限公司 | Hollow wall winding enhancing compound bellows |
| CN111396649A (en) * | 2020-03-25 | 2020-07-10 | 上海英泰塑胶股份有限公司 | Arc preimpregnation band plate reinforcing winding bellows |
| CN114379073A (en) * | 2021-11-03 | 2022-04-22 | 湖北天霖新材料有限公司 | Polyethylene hollow wall winding composite tool and operation method thereof |
| CN115503225A (en) * | 2022-10-31 | 2022-12-23 | 河北君业科技股份有限公司 | Insulating tube polyethylene outer jacket coiler |
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| CN101016964A (en) * | 2007-02-07 | 2007-08-15 | 李寿山 | Heavy caliber high-strength plastic wound pipe having pipe wall made of wrapping material and manufacture method therefor |
| CN104061378A (en) * | 2014-05-09 | 2014-09-24 | 张娟 | Continuous twining reinforced structure wall pipe, manufacturing equipment and manufacturing method |
| CN105538756A (en) * | 2016-02-27 | 2016-05-04 | 云南驰通环保科技有限责任公司 | Production method of steel belt reinforced hollow double-flat-wall polyethylene intertwined drainage pipe |
| CN105619855A (en) * | 2016-02-27 | 2016-06-01 | 云南驰通环保科技有限责任公司 | Production device of steel belt reinforced hollow dual-flat-wall polyethylene wound water drainage pipe |
-
2018
- 2018-02-02 CN CN201810108378.1A patent/CN108340592A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101016964A (en) * | 2007-02-07 | 2007-08-15 | 李寿山 | Heavy caliber high-strength plastic wound pipe having pipe wall made of wrapping material and manufacture method therefor |
| CN104061378A (en) * | 2014-05-09 | 2014-09-24 | 张娟 | Continuous twining reinforced structure wall pipe, manufacturing equipment and manufacturing method |
| CN105538756A (en) * | 2016-02-27 | 2016-05-04 | 云南驰通环保科技有限责任公司 | Production method of steel belt reinforced hollow double-flat-wall polyethylene intertwined drainage pipe |
| CN105619855A (en) * | 2016-02-27 | 2016-06-01 | 云南驰通环保科技有限责任公司 | Production device of steel belt reinforced hollow dual-flat-wall polyethylene wound water drainage pipe |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110307404A (en) * | 2019-08-02 | 2019-10-08 | 贵州兴四通塑胶有限公司 | Hollow wall winding enhancing compound bellows |
| CN111396649A (en) * | 2020-03-25 | 2020-07-10 | 上海英泰塑胶股份有限公司 | Arc preimpregnation band plate reinforcing winding bellows |
| CN114379073A (en) * | 2021-11-03 | 2022-04-22 | 湖北天霖新材料有限公司 | Polyethylene hollow wall winding composite tool and operation method thereof |
| CN115503225A (en) * | 2022-10-31 | 2022-12-23 | 河北君业科技股份有限公司 | Insulating tube polyethylene outer jacket coiler |
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| PB01 | Publication | ||
| PB01 | Publication | ||
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Application publication date: 20180731 |