CN109466053B - Production system and production method for polyethylene glass fiber winding structure wall pipe - Google Patents
Production system and production method for polyethylene glass fiber winding structure wall pipe Download PDFInfo
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- CN109466053B CN109466053B CN201811590132.9A CN201811590132A CN109466053B CN 109466053 B CN109466053 B CN 109466053B CN 201811590132 A CN201811590132 A CN 201811590132A CN 109466053 B CN109466053 B CN 109466053B
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- polyethylene
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- 239000003365 glass fiber Substances 0.000 title claims abstract description 85
- -1 polyethylene Polymers 0.000 title claims abstract description 78
- 239000004698 Polyethylene Substances 0.000 title claims abstract description 77
- 229920000573 polyethylene Polymers 0.000 title claims abstract description 77
- 238000004804 winding Methods 0.000 title claims abstract description 37
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 34
- 239000000463 material Substances 0.000 claims abstract description 86
- 238000001125 extrusion Methods 0.000 claims abstract description 58
- 229920001903 high density polyethylene Polymers 0.000 claims description 20
- 239000004700 high-density polyethylene Substances 0.000 claims description 20
- 238000002844 melting Methods 0.000 claims description 14
- 230000008018 melting Effects 0.000 claims description 14
- 239000002994 raw material Substances 0.000 claims description 12
- 238000007599 discharging Methods 0.000 claims description 8
- 239000000835 fiber Substances 0.000 claims description 8
- 238000000265 homogenisation Methods 0.000 claims description 8
- 238000010438 heat treatment Methods 0.000 claims description 7
- 239000011347 resin Substances 0.000 claims description 7
- 229920005989 resin Polymers 0.000 claims description 7
- 229920000049 Carbon (fiber) Polymers 0.000 claims description 6
- 235000019738 Limestone Nutrition 0.000 claims description 6
- 239000004917 carbon fiber Substances 0.000 claims description 6
- 239000006028 limestone Substances 0.000 claims description 6
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 claims description 6
- 230000002787 reinforcement Effects 0.000 claims description 3
- 238000002156 mixing Methods 0.000 abstract description 6
- 238000000034 method Methods 0.000 description 4
- 239000004743 Polypropylene Substances 0.000 description 3
- 239000000203 mixture Substances 0.000 description 3
- 229920001155 polypropylene Polymers 0.000 description 3
- 239000012779 reinforcing material Substances 0.000 description 3
- 230000007547 defect Effects 0.000 description 2
- 229920003023 plastic Polymers 0.000 description 2
- 239000004033 plastic Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000003014 reinforcing effect Effects 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
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
- 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
-
- 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
- B29C53/78—Winding and joining, e.g. winding spirally helically using profiled sheets or strips
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
- B29L2023/00—Tubular articles
- B29L2023/22—Tubes or pipes, i.e. rigid
Abstract
The invention relates to a production system of a polyethylene glass fiber winding structure wall pipe, which comprises a sheet inner wall layer strip extrusion unit and a tubular outer wall layer strip extrusion unit, wherein the sheet inner wall layer strip extrusion unit comprises a first double-screw extruder, a first single-screw extruder and a sheet material strip extrusion machine head, the first double-screw extruder is provided with a main feeding port and a side feeding port, and discharge ports of the first double-screw extruder and the first single-screw extruder are respectively connected to a first channel port and a second channel port of the sheet material strip extrusion machine head through a flow channel; the tubular outer wall layer belt extrusion unit comprises a second double-screw extruder, a second single-screw extruder and a tubular material belt extrusion machine head, wherein the second double-screw extruder is provided with a main feeding port and a side feeding port, and discharge ports of the second double-screw extruder and the second single-screw extruder are respectively connected to a first flow passage port and a second flow passage port of the tubular material belt extrusion machine head through flow passages. The invention can effectively improve the mixing uniformity of the glass fiber material and the rigidity of the product.
Description
Technical Field
The invention relates to the technical field of plastic pipe processing, in particular to a production system and a production method of a polyethylene glass fiber winding structure wall pipe.
Background
In urban drainage engineering, plastic pipes are increasingly used. In order to improve the performance of resisting external pressure and impact, reinforcing ribs in different forms are arranged on the periphery of the pipe wall. There are two main types of materials commonly used: one is to use direct extrusion molding, most typically a double wall bellows: the other is represented by spiral winding forming, namely a double-wall pipe and a polyethylene winding structure wall pipe.
Polyethylene wound structural wall tubing is widely used with its excellent properties. The polyethylene winding structure wall pipe is a special structure wall pipe with higher external pressure resistance, which is manufactured by taking high-density polyethylene resin as a main raw material, adopting a thermal winding forming process and taking a polypropylene single-wall corrugated pipe as an auxiliary supporting structure.
When producing high stiffness pipes, in particular large diameter pipes, the following must be used: the thickness of the flat material belt is increased as soon as the number of layers of the winding solid wall pipe is increased; secondly, increasing the number of layers of the winding framework pipe; thirdly, enlarging the diameter of the skeleton pipe; fourthly, the thickness of the material belt coating the framework pipe is increased to meet the requirement of the product on the design ring rigidity, and the defects are that the raw material consumption is high, the winding time is long, and the product weight and the cost are high; fifthly, a polyethylene glass fiber winding structure wall pipe is adopted.
The existing polyethylene winding structure wall pipe adopts a premixing mode of a polyethylene raw material and a glass fiber material, the two raw materials are stirred and mixed in a mixing device and then are fed into an extruder for extrusion, the problem that the glass fiber material is unevenly mixed exists, and the problems that the content of glass fiber in the extruded polyethylene material in a molten state is locally too high, locally insufficient and the like are caused, so that the performance of a product is influenced.
Disclosure of Invention
The invention aims to overcome the defects of the prior art and provides a production system and a production method of a polyethylene glass fiber winding structure wall pipe, which can improve the mixing uniformity of glass fiber materials, thereby effectively improving the rigidity of products.
The invention solves the technical problems by the following technical proposal:
a production system of a polyethylene glass fiber winding structure wall pipe is characterized in that: the extrusion device comprises a sheet-shaped inner wall layer strip extrusion unit and a tubular outer wall layer strip extrusion unit, wherein the sheet-shaped inner wall layer strip extrusion unit comprises a first double-screw extruder, a first single-screw extruder and a sheet-shaped material strip extrusion machine head, the first double-screw extruder is provided with a main feeding port and a side feeding port, and discharge ports of the first double-screw extruder and the first single-screw extruder are respectively connected to a first flow channel port and a second flow channel port of the sheet-shaped material strip extrusion machine head through flow channels; the tubular outer wall layer belt extrusion unit comprises a second double-screw extruder, a second single-screw extruder and a tubular material belt extrusion machine head, wherein the second double-screw extruder is provided with a main feeding port and a side feeding port, and discharge ports of the second double-screw extruder and the second single-screw extruder are respectively connected to a first flow passage port and a second flow passage port of the tubular material belt extrusion machine head through flow passages.
The sheet-shaped inner wall layer belt extrusion unit further comprises a first pressurizing single-screw extruder, wherein the first pressurizing single-screw extruder is arranged at the feeding end or the discharging end of the first double-screw extruder, namely, the discharging port of the first pressurizing single-screw extruder is connected to the main feeding port of the first double-screw extruder through a runner; or the feed inlet of the first pressurizing single-screw extruder is connected with the discharge outlet of the first double-screw extruder through a runner, and the discharge outlet of the first pressurizing single-screw extruder is connected to the first runner of the sheet material belt extruder head through a runner.
The tubular outer wall layer belt extrusion unit further comprises a second pressurizing single-screw extruder, wherein the second pressurizing single-screw extruder is arranged at the feeding end or the discharging end of the second double-screw extruder, namely, the discharging port of the second pressurizing single-screw extruder is connected to the main feeding port of the second double-screw extruder through a runner; or the feed inlet of the second pressurizing single-screw extruder is connected with the discharge outlet of the second double-screw extruder through a runner, and the discharge outlet of the second pressurizing single-screw extruder is connected to the first runner of the tubular material belt extruder head through a runner.
And the tubular material belt extruder head of the tubular outer wall layer belt extrusion unit is provided with a skeleton pipe feeding port.
The production method of the polyethylene glass fiber winding structure wall pipe by adopting the production system is characterized by comprising the following steps of: the method comprises the following steps:
1) Extruding the sheet-shaped inner wall layer material belt through a sheet-shaped inner wall layer belt extruding unit: adding a polyethylene raw material into a main feeding port of a first double-screw extruder with an extrusion unit on a sheet inner wall layer, adding a glass fiber reinforced material into a side feeding port of the first double-screw extruder, heating, plasticizing and homogenizing in the first double-screw extruder to form a polyethylene glass fiber mixed melt, and adding high-density polyethylene resin into the first single-screw extruder to heat, plasticize and homogenize to form a high-density polyethylene melt; the polyethylene glass fiber mixed melting material and the high-density polyethylene melting material enter a sheet material belt extruder head to be extruded to form a sheet polyethylene glass fiber inner wall layer material belt, and the sheet polyethylene glass fiber inner wall layer material belt is wound on a roller to form a polyethylene glass fiber winding structure wall pipe inner wall layer;
2) Extruding a tubular outer wall layer material belt through a tubular outer wall layer belt extrusion unit: adding a polyethylene raw material into a main feeding port of a second double-screw extruder with an extrusion unit on a tubular outer wall layer, adding a glass fiber reinforced material into a side feeding port of the second double-screw extruder, heating, plasticizing and homogenizing in the second double-screw extruder to form a polyethylene glass fiber mixed melt, and adding high-density polyethylene resin into a second single-screw extruder to heat, plasticize and homogenize to form a high-density polyethylene melt; and (2) feeding the polyethylene glass fiber mixed melting material, the high-density polyethylene melting material and the skeleton pipe into a tubular material belt extruder head to extrude to form a tubular polyethylene glass fiber outer wall layer material belt, and spirally winding the tubular material belt on the outer surface of the inner wall layer of the tubular material formed in the step (1) to form a polyethylene glass fiber winding structure wall tubular material outer wall layer.
And the step 1) further comprises a secondary homogenization and pressurization step of the polyethylene glass fiber mixed melt, wherein the polyethylene glass fiber mixed melt extruded by the first twin-screw extruder is pressurized by the first pressurization single-screw extruder.
And the step 2) further comprises a secondary homogenization and pressurization step of the polyethylene glass fiber mixed melt, and the polyethylene glass fiber mixed melt extruded by the second double-screw extruder is pressurized by the second pressurizing single-screw extruder.
And the glass fiber reinforcement material is short glass fiber, short carbon fiber and short limestone fiber, or continuous glass fiber, continuous carbon fiber and continuous limestone fiber.
The invention has the advantages and beneficial effects that:
1. according to the production system of the polyethylene glass fiber winding structure wall pipe, the polyethylene/polypropylene raw material and the glass fiber reinforcing material are placed in the double-screw extruder for mixing, heating, plasticizing and homogenizing, so that the uniform mixing of the polyethylene/polypropylene and the glass fiber reinforcing material can be well realized, the glass fiber reinforcing material is uniformly distributed after the raw material is extruded, the rigidity of the pipe can be effectively improved, and the product performance is improved.
2. According to the production system of the polyethylene glass fiber winding structure wall pipe, disclosed by the invention, the pressurizing single-screw extruder is adopted to carry out secondary homogenization and pressurizing operation on the mixture, so that the mixture can smoothly enter the extruder head, the extrusion of the extruder head is realized, the homogenization degree of the polyethylene glass fiber mixture is improved, and the product quality is improved.
3. The production method of the polyethylene glass fiber winding structure wall pipe can effectively improve the mixing uniformity of glass fiber materials, thereby improving the rigidity of the product.
Drawings
FIG. 1 is a schematic structural view of a first embodiment of the present invention;
FIG. 2 is a schematic structural view of a second embodiment of the present invention;
fig. 3 is a schematic structural view of a third embodiment of the present invention.
Reference numerals
1-second twin-screw extruder, 2-second twin-screw extruder main feed port, 3-second twin-screw extruder side feed port, 4-sixth runner, 5-second pressurized single-screw extruder, 6-cylinder, 7-second single-screw extruder, 8-fourth runner, 9-tubular strand extruder head first feed port, 10-tubular strand extruder head second feed port, 11-tubular strand extruder head, 12-backbone tube, 13-first single-screw extruder, 14-sheet strand extruder head, 15-sheet strand extruder head first runner, 16-sheet strand extruder head second feed port, 17-second runner, 18-first runner, 19-first pressurized single-screw extruder, 20-first twin-screw extruder, 21-first twin-screw extruder main feed port, 22-first twin-screw extruder side feed port, 23-tubular polyethylene fiber outer wall layer strand, 24-sheet polyethylene fiber inner wall layer strand, 25-third runner, 26-fifth runner.
Detailed Description
The invention is further illustrated by the following examples, which are intended to be illustrative only and not limiting in any way.
Example 1:
a production system of a polyethylene glass fiber winding structure wall pipe, as shown in fig. 1, comprises a sheet-shaped inner wall layer strip extrusion unit and a tubular outer wall layer strip extrusion unit, wherein the sheet-shaped inner wall layer strip extrusion unit comprises a first double-screw extruder 20, a first single-screw extruder 13 and a sheet-shaped material strip extrusion machine head 14, the first double-screw extruder is provided with a main feeding port 21 and a side feeding port 22, and a discharge port of the first double-screw extruder is connected to a first flow port 15 of the sheet-shaped material strip extrusion machine head through a first flow channel 18; the discharge opening of the first single-screw extruder is connected via a second flow channel 17 to a second flow channel opening 16 of the sheet-like material web extruder head.
The tubular outer wall layer strip extrusion unit comprises a second double-screw extruder 1, a second single-screw extruder 7 and a tubular material strip extrusion machine head 11, wherein the second double-screw extruder is provided with a main feeding port 2 and a side feeding port 3, the discharge ports of the second double-screw extruder are respectively connected to a first runner port 9 of the tubular material strip extrusion machine head through third runners 25, and the discharge ports of the second single-screw extruder are connected to a second runner port 10 of the tubular material strip extrusion machine head through fourth runners 8. The tubular material belt extruder head of the tubular outer wall layer belt extrusion unit is provided with a skeleton pipe feeding port of a skeleton pipe 12.
Example 2:
as shown in fig. 2, the sheet-shaped inner wall layer belt extrusion unit further includes a first pressurizing single screw extruder 19 provided at a feed end of the first twin screw extruder, that is, a discharge port of the first pressurizing single screw extruder is connected to a main feed port of the first twin screw extruder through a fifth flow passage 26.
The tubular outer wall layer belt extrusion unit further comprises a second pressurizing single-screw extruder 5 which is arranged at the feed end of the second double-screw extruder, namely, the discharge port of the second pressurizing single-screw extruder is connected to the main feed port of the second double-screw extruder through a sixth runner 4. Otherwise, the method is the same as in example 1.
Example 3:
as shown in fig. 3, the sheet-shaped inner wall layer belt extrusion unit further includes a first pressurizing single screw extruder 19, where the first pressurizing single screw extruder is disposed at a discharge end of the first twin screw extruder, that is, a feed port of the first pressurizing single screw extruder is connected to a discharge port of the first twin screw extruder through a fifth flow channel 26, and the discharge port of the first pressurizing single screw extruder is connected to a first flow channel port of the sheet-shaped material belt extruder head through a first flow channel 18.
The tubular outer wall layer belt extrusion unit further comprises a second pressurizing single-screw extruder 5, wherein the second pressurizing single-screw extruder is arranged at the discharge end of the second double-screw extruder, namely, the feed inlet of the second pressurizing single-screw extruder is connected with the discharge outlet of the second double-screw extruder through a sixth flow channel 4, and the discharge outlet of the second pressurizing single-screw extruder is connected to the first flow channel opening of the tubular material belt extrusion machine head through a third flow channel 25. Otherwise, the method is the same as in example 1.
The production method of the polyethylene glass fiber winding structure wall pipe by adopting the production system comprises the following steps:
1) Extruding the sheet-shaped inner wall layer material belt through a sheet-shaped inner wall layer belt extruding unit: adding a polyethylene raw material into a main feeding port of a first double-screw extruder with an extrusion unit on a sheet inner wall layer, adding a glass fiber reinforced material into a side feeding port of the first double-screw extruder, heating, plasticizing and homogenizing in the first double-screw extruder to form a polyethylene glass fiber mixed melt, and adding high-density polyethylene resin into the first single-screw extruder to heat, plasticize and homogenize to form a high-density polyethylene melt; the polyethylene glass fiber mixed melting material and the high-density polyethylene melting material enter a sheet material belt extruder head to be extruded to form a sheet polyethylene glass fiber inner wall layer material belt 24, and the sheet polyethylene glass fiber inner wall layer material belt is wound on a roller 6 to form a polyethylene glass fiber winding structure wall pipe inner wall layer; and pressurizing the polyethylene glass fiber mixed melt extruded by the first double-screw extruder through the first pressurizing single-screw extruder.
2) Extruding a tubular outer wall layer material belt through a tubular outer wall layer belt extrusion unit: adding a polyethylene raw material into a main feeding port of a second double-screw extruder with an extrusion unit on a tubular outer wall layer, adding a glass fiber reinforced material into a side feeding port of the second double-screw extruder, heating, plasticizing and homogenizing in the second double-screw extruder to form a polyethylene glass fiber mixed melt, and adding high-density polyethylene resin into a second single-screw extruder to heat, plasticize and homogenize to form a high-density polyethylene melt; the polyethylene glass fiber mixed melting material, the high-density polyethylene melting material and the skeleton pipe enter a tubular material belt extruder head to be extruded to form a tubular polyethylene glass fiber outer wall layer material belt 23, and the tubular polyethylene glass fiber mixed melting material, the high-density polyethylene melting material and the skeleton pipe are spirally wound on the outer surface of the inner wall layer of the pipe formed in the step 1) to form a polyethylene glass fiber winding structure wall pipe outer wall layer. And (3) a secondary homogenization and pressurization step of the polyethylene glass fiber mixed melt, wherein the polyethylene glass fiber mixed melt extruded by the second double-screw extruder is pressurized by the second pressurization single-screw extruder.
The glass fiber reinforcement material is short glass fiber, short carbon fiber, short limestone fiber, or continuous glass fiber, continuous carbon fiber, continuous limestone fiber.
While the present invention has been disclosed with reference to the embodiments and the accompanying drawings, it will be understood by those skilled in the art that: various substitutions, changes and modifications are possible without departing from the spirit and scope of the invention and the appended claims, and therefore the scope of the invention is not limited to the embodiments and the disclosure of the drawings.
Claims (7)
1. A production method of a polyethylene glass fiber winding structure wall pipe by adopting a polyethylene glass fiber winding structure wall pipe production system is characterized by comprising the following steps of:
the production system comprises a sheet inner wall layer strip extrusion unit and a tubular outer wall layer strip extrusion unit, wherein the sheet inner wall layer strip extrusion unit comprises a first double-screw extruder, a first single-screw extruder and a sheet material strip extrusion machine head, the first double-screw extruder is provided with a main feeding port and a side feeding port, and discharge ports of the first double-screw extruder and the first single-screw extruder are respectively connected to a first channel port and a second channel port of the sheet material strip extrusion machine head through flow channels; the tubular outer wall layer belt extrusion unit comprises a second double-screw extruder, a second single-screw extruder and a tubular material belt extrusion machine head, wherein the second double-screw extruder is provided with a main feeding port and a side feeding port, and discharge ports of the second double-screw extruder and the second single-screw extruder are respectively connected to a first flow channel port and a second flow channel port of the tubular material belt extrusion machine head through flow channels;
the production method comprises the following steps:
1) Extruding the sheet-shaped inner wall layer material belt through a sheet-shaped inner wall layer belt extruding unit: adding a polyethylene raw material into a main feeding port of a first double-screw extruder with an extrusion unit on a sheet inner wall layer, adding a glass fiber reinforced material into a side feeding port of the first double-screw extruder, heating, plasticizing and homogenizing in the first double-screw extruder to form a polyethylene glass fiber mixed melt, and adding high-density polyethylene resin into the first single-screw extruder to heat, plasticize and homogenize to form a high-density polyethylene melt; the polyethylene glass fiber mixed melting material and the high-density polyethylene melting material enter a sheet material belt extruder head to be extruded to form a sheet polyethylene glass fiber inner wall layer material belt, and the sheet polyethylene glass fiber inner wall layer material belt is wound on a roller to form a polyethylene glass fiber winding structure wall pipe inner wall layer;
2) Extruding a tubular outer wall layer material belt through a tubular outer wall layer belt extrusion unit: adding a polyethylene raw material into a main feeding port of a second double-screw extruder with an extrusion unit on a tubular outer wall layer, adding a glass fiber reinforced material into a side feeding port of the second double-screw extruder, heating, plasticizing and homogenizing in the second double-screw extruder to form a polyethylene glass fiber mixed melt, and adding high-density polyethylene resin into a second single-screw extruder to heat, plasticize and homogenize to form a high-density polyethylene melt; and (2) feeding the polyethylene glass fiber mixed melting material, the high-density polyethylene melting material and the skeleton pipe into a tubular material belt extruder head to extrude to form a tubular polyethylene glass fiber outer wall layer material belt, and spirally winding the tubular material belt on the outer surface of the inner wall layer of the tubular material formed in the step (1) to form a polyethylene glass fiber winding structure wall tubular material outer wall layer.
2. The production method of the polyethylene glass fiber winding structure wall pipe according to claim 1, wherein the production method comprises the following steps: the sheet inner wall layer belt extrusion unit further comprises a first pressurizing single-screw extruder, wherein the first pressurizing single-screw extruder is arranged at the feeding end or the discharging end of the first double-screw extruder, namely, the discharging port of the first pressurizing single-screw extruder is connected to the main feeding port of the first double-screw extruder through a runner; or the feed inlet of the first pressurizing single-screw extruder is connected with the discharge outlet of the first double-screw extruder through a runner, and the discharge outlet of the first pressurizing single-screw extruder is connected to the first runner of the sheet material belt extruder head through a runner.
3. The production method of the polyethylene glass fiber winding structure wall pipe according to claim 1, wherein the production method comprises the following steps: the tubular outer wall layer belt extrusion unit further comprises a second pressurizing single-screw extruder, wherein the second pressurizing single-screw extruder is arranged at the feeding end or the discharging end of the second double-screw extruder, namely, the discharging port of the second pressurizing single-screw extruder is connected to the main feeding port of the second double-screw extruder through a runner; or the feed inlet of the second pressurizing single-screw extruder is connected with the discharge outlet of the second double-screw extruder through a runner, and the discharge outlet of the second pressurizing single-screw extruder is connected to the first runner of the tubular material belt extruder head through a runner.
4. The production method of the polyethylene glass fiber winding structure wall pipe according to claim 1, wherein the production method comprises the following steps: the tubular material belt extruder head of the tubular outer wall layer belt extrusion unit is provided with a skeleton pipe feeding port.
5. The production method of the polyethylene glass fiber winding structure wall pipe according to claim 1, wherein the production method comprises the following steps: the step 1) further comprises a secondary homogenization and pressurization step of the polyethylene glass fiber mixed melt, and the polyethylene glass fiber mixed melt extruded by the first twin-screw extruder is pressurized by the first pressurization single-screw extruder.
6. The production method of the polyethylene glass fiber winding structure wall pipe according to claim 1, wherein the production method comprises the following steps: the step 2) further comprises a secondary homogenization and pressurization step of the polyethylene glass fiber mixed melt, and the secondary homogenization and pressurization is carried out on the polyethylene glass fiber mixed melt extruded by the second double-screw extruder through the second pressurization single-screw extruder.
7. The production method of the polyethylene glass fiber winding structure wall pipe according to claim 1, wherein the production method comprises the following steps: the glass fiber reinforcement material is short glass fiber, short carbon fiber and short limestone fiber, or continuous glass fiber, continuous carbon fiber and continuous limestone fiber.
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| CN201811590132.9A CN109466053B (en) | 2018-12-25 | 2018-12-25 | Production system and production method for polyethylene glass fiber winding structure wall pipe |
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| CN201811590132.9A CN109466053B (en) | 2018-12-25 | 2018-12-25 | Production system and production method for polyethylene glass fiber winding structure wall pipe |
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