Belt-type reinforced composite plastic pipe and production method thereof

Abstract

The present invention relates to the technical field of pipeline production, and discloses a belt-type reinforced composite plastic pipe and a production method thereof, comprising a winding step of winding a reinforcement belt (1) onto a plastic core pipe (2) using a winding machine, wherein the winding machine has a plurality of belt reels for simultaneously releasing a plurality of the reinforcement belts (1), wherein, in the winding step, the reinforcement belts (1) released by adjacent belt reels of the same winding machine are spirally wound onto the plastic core pipe (2) in an at least partially stacked manner. The production method can form multiple reinforcement layers on the outer periphery of the plastic core pipe after the plastic core pipe advances in a straight line along its axial direction and passes through a winding machine, thereby effectively reducing the number of winding machines required in the production of belt-type reinforced composite plastic pipes. At the same time, there is no need to wind and unwind the pipe material multiple times during the production process, and it is convenient to use a reinforcement belt with a wider bandwidth to form the reinforcement layer, thereby ensuring high production efficiency and the quality of the pipe material.

Description

Technical Field

[0001] The present invention relates to a pipe production technology, and in particular to a method for producing a belt-type reinforced composite plastic pipe. Furthermore, the present invention also relates to a belt-type reinforced composite plastic pipe produced by the production method. Background Art

[0002] Reinforced thermoplastic pipe (RTP) usually has a three-layer structure including an inner layer, an intermediate layer and an outer layer, wherein the inner layer is a corrosion-resistant and wear-resistant thermoplastic core pipe, the intermediate layer is a reinforcing layer that plays a reinforcing role, and the outer layer is an outer coating layer that plays a protective role. The intermediate layer can be formed by spirally winding a ribbon-shaped reinforcing material such as a polyester fiber tape, a glass fiber tape, a metal ribbon, or a metal tape around the inner plastic core pipe. Due to its good corrosion resistance, high temperature resistance, light weight, and easy installation advantages, and its high tensile, compressive, and flexural strengths, RTP pipes are widely used in the fields of oil production and injection, gathering and transportation, long-distance transportation, marine engineering, etc., and can be used to replace traditional steel pipes, glass fiber reinforced plastic pipes, and have broad market prospects.

[0003] In the production process of such a tape-reinforced composite plastic pipe, the plastic core pipe can be extruded, for example, to advance in a straight line along its axial direction and pass through a winding machine having a tape reel. The winding machine rotates around the plastic core pipe, so that the reinforcement tape released by the tape reel is spirally wound onto the outer circumference of the plastic core pipe, forming a reinforcement layer composited onto the outer circumferential wall of the plastic core pipe. Typically, each winding machine has multiple (e.g., four, six, eight, etc.) tape reels, and accordingly, the winding machine can be referred to as a "four-reel tape winding machine," a "six-reel tape winding machine," etc. During operation, these tape reels simultaneously release the wound reinforcement tape, thereby achieving higher production efficiency.

[0004] Take the production method of using four-reel winding machine as an example, Figure 1 and Figure 2 As shown, the reinforcement tape 1 released by the four-reel winding machine is spirally wound onto the plastic core tube 2. Figure 1 The figure shows a situation where only one reinforcement tape 1 is spirally wound. The reinforcement tape 1 is wound on the outer peripheral wall of the plastic core tube 2 at a pitch P, with winding gaps 4 between adjacent spirals. Figure 2The figure shows four reinforcing tapes 1 released from four reels of the same winding machine being spirally wound. Specifically, a first reinforcing tape 11 is wound onto the outer circumferential wall of a plastic core tube 2 at a pitch P, with winding gaps 4 between adjacent spirals. A second reinforcing tape 12, a third reinforcing tape 13, and a fourth reinforcing tape 14 are wound into the winding gaps 4 between adjacent spirals of the first reinforcing tape 11 at the same pitch P. As a result, when the plastic core tube advances in a straight line along its axial direction and passes through the four-reel winding machine, a reinforcement layer is formed on the outer circumference of the plastic core tube 2. Different reinforcing tapes can be adjacent to each other or have gaps therebetween.

[0005] To ensure that belt-reinforced composite plastic pipes meet performance requirements, multiple winding machines are required. For example, if 20 reinforcement layers are required on the outer circumference of the plastic core pipe 2, 20 winding machines are required. However, this not only requires a significant investment in equipment but also occupies a significant production site. Alternatively, if fewer winding machines, such as four, are used, the pipe must be reeled and unreeled, passing through each winding machine five times, severely impacting production efficiency and pipe quality. Summary of the Invention

[0006] The purpose of the present invention is to overcome the problems of large equipment investment and large production site area in the existing technology of belt-type reinforced composite plastic pipe production line, and to provide a production method of belt-type reinforced composite plastic pipe. The production method can effectively reduce the number of winding machines required in the production of belt-type reinforced composite plastic pipe, greatly improve production efficiency, and will not affect the quality of the pipe.

[0007] In order to achieve the above-mentioned objectives, the present invention provides, on the one hand, a method for producing a belt-type reinforced composite plastic pipe, comprising a winding step of winding a reinforcement belt onto a plastic core pipe using a winding machine, wherein the winding machine has multiple belt reels for simultaneously releasing the reinforcement belts, wherein, in the winding step, multiple reinforcement belts released by multiple belt reels of the same winding machine are spirally wound on the plastic core pipe in an at least partially stacked manner.

[0008] Preferably, the reinforcement tapes released by the respective tape reels of the same winding machine have the same bandwidth d. In the winding step, the reinforcement tapes released by the respective tape reels of the same winding machine are spirally wound on the plastic core tube at the same helix angle α.

[0009] Preferably, in the winding step, the pitch P of the reinforcing tape spirally wound on the plastic core tube satisfies: P≥d / sinα, and the reinforcing tape located in the outer layer released by the adjacent tape reel of the same winding machine is stacked on the two adjacent spirals of the reinforcing tape located in the inner layer at its two side edges.

[0010] Preferably, in the winding step, the pitch P of the reinforcing tape spirally wound on the plastic core tube satisfies: P = (d + △) / sinα, where △ is the spacing between adjacent spirals of the reinforcing tape released from the same reel and ranges from 0mm to 5mm.

[0011] Preferably, in the winding step, the stacking width L of the corresponding spirals of the reinforcement tape located in the outer layer released by the adjacent tape reel of the same winding machine and the reinforcement tape located in the inner layer satisfies: L<d / sinα, or, in the winding step, the reinforcement tape located in the outer layer released by the adjacent tape reel of the same winding machine is spirally wound to completely overlap with the reinforcement tape located in the inner layer.

[0012] Preferably, the production method further comprises the steps of extruding the plastic core tube before the winding step and compounding a plastic outer tube on the periphery of the reinforcement tape.

[0013] Preferably, a plurality of the winding machines are arranged in the production line for executing the production method, and the winding points of the reinforcement tapes released by the respective tape reels of the same winding machine on the plastic core tube are evenly distributed along the circumference of the plastic core tube, and along the moving direction of the plastic core tube, the reinforcement tapes released by the winding machine arranged downstream are spirally wound on the reinforcement tapes released by the winding machine arranged upstream.

[0014] Preferably, each of the winding machines has an even number of the tape reels.

[0015] Preferably, in the winding step, the rotation directions of the tape reels of the adjacent winding machines are opposite, so that the released reinforcement tape is wound on the plastic core tube in the opposite rotation direction.

[0016] A second aspect of the present invention provides a belt-type reinforced composite plastic pipe produced by the above production method.

[0017] Through the above-described technical solution, the production method of the present invention allows the reinforcing tape released from different reels of the same winding machine to be spirally wound in an at least partially overlapping manner during the winding step of winding the reinforcing tape onto the plastic core tube. As a result, multiple reinforcement layers are formed on the outer circumference of the plastic core tube after the plastic core tube advances linearly along its axial direction and passes through a winding machine. This reduces the number of winding machines in the production line to less than the number of reinforcement layers required to produce a tape-reinforced composite plastic tube that meets performance requirements, effectively reducing the number of winding machines required for the production of tape-reinforced composite plastic tubes. Furthermore, the production process eliminates the need for multiple winding and unwinding of the tube, and facilitates the use of a wider-band reinforcing tape to form the reinforcement layer, thereby ensuring high production efficiency and the quality of the resulting tube. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of a process of spirally winding a reinforcement tape onto a plastic core tube using a production method of the prior art;

[0019] Figure 2 It is a schematic diagram of using the existing production method to spirally wind four reinforcement tapes released from four tape reels of the same winding machine onto a plastic core tube to form a reinforcement layer;

[0020] Figure 3 This is a schematic diagram of a process of spirally winding a reinforcement tape onto a plastic core tube using the production method of the present invention;

[0021] Figure 4 yes Figure 3 An enlarged view of the local A in FIG;

[0022] Figure 5 Schematic diagram of using the production method of the present invention to spirally wind two reinforcement tapes released from two adjacent tape reels of the same winding machine onto a plastic core tube, wherein the two reinforcement tapes are spirally wound so as to completely overlap;

[0023] Figure 6 Schematic diagram of using the production method of the present invention to spirally wind two reinforcement tapes released from two adjacent tape reels of the same winding machine onto a plastic core tube, wherein the outer reinforcement tape and the inner reinforcement tape have a stacking width L;

[0024] Figure 7 It is a schematic diagram of using the production method of the present invention to spirally wind four reinforcement tapes released from four tape reels of the same winding machine onto a plastic core tube;

[0025] Figure 8 This is a structural diagram of each layer of a belt-type reinforced composite plastic pipe produced using the production method of the present invention.

[0026] Description of Reference Numerals

[0027] 1-reinforcement tape; 11-first reinforcement tape; 12-second reinforcement tape; 13-third reinforcement tape; 14-fourth reinforcement tape; 2-plastic core tube; 3-plastic outer tube; 4-winding gap; P-pitch; △-spacing between adjacent spirals; d-bandwidth; α-helix angle; L-stack width; 10-first reinforcement layer; 20-second reinforcement layer. DETAILED DESCRIPTION

[0028] The following describes the specific embodiments of the present invention in detail with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are only used to illustrate and explain the present invention and are not intended to limit the present invention.

[0029] One aspect of the present invention provides a method for producing a belt-type reinforced composite plastic pipe. Figures 3 to 8As shown, the production method includes the steps of using a winding machine (not shown) to wind a reinforcement tape 1 onto a plastic core tube 2 to form multiple reinforcement layers (such as a first reinforcement layer 10 and a second reinforcement layer 20), wherein the winding machine has multiple reels for simultaneously releasing the reinforcement tape 1. The reinforcement tape can be a belt-type reinforcement material of various suitable materials, such as polyester fiber tape, glass fiber tape, metal ribbon, metal tape, etc. The winding machine can have a suitable number of reels, such as two, three, four, six, eight, etc., that is, the winding machine is a "two-reel winding machine", "three-reel winding machine", "four-reel winding machine", etc. In the following exemplary description, the production method of the present invention will be mainly described by taking a production line using a four-reel winding machine as an example. In order from the inside to the outside, the reinforcement tapes 1 released by each reel are respectively the first reinforcement tape 11, the second reinforcement tape 12, the third reinforcement tape 13 and the fourth reinforcement tape 14.

[0030] For ease of explanation, Figure 3 The figure shows a situation where only one reinforcement tape 1 (ie, the first reinforcement tape 11) is spirally wound. Figure 4 As shown in the enlarged view of FIG, the first reinforcement tape 11 is wound around the outer circumferential wall of the plastic core tube 2 at a pitch P, with a winding gap 4 between adjacent spirals. In alternative embodiments, adjacent spirals of the first reinforcement tape 11 may also abut one another, i.e., the winding gap 4 is zero. By setting a non-zero winding gap 4, overlapping adjacent spirals of the same reinforcement tape 1 can be effectively prevented, thereby ensuring the quality of the resulting pipe without having to strictly control the manufacturing and winding accuracy of the reinforcement tape 1.

[0031] Figure 4 Parameters such as the width d of the wound reinforcement tape 1, the helical angle α of the helical winding, and the spacing △ between adjacent helices are also marked. Figures 5 to 7 In the preferred embodiment described, these parameters are identical for different reinforcement tapes 1 so that the resulting pipe has substantially the same strength at all circumferential wall locations. When the pitch P of the reinforcement tape 1 helically wound around the plastic core tube 2 satisfies: P = d / sinα, adjacent spirals of the reinforcement tape 1 are adjacent to each other, i.e., the winding gap is 0. When the pitch P of the reinforcement tape 1 helically wound around the plastic core tube 2 satisfies: P > d / sinα, adjacent spirals of the reinforcement tape 1 are spaced apart from each other, i.e., there is a non-zero winding gap 4.

[0032] Figure 5 and Figure 6 The figures show two reinforcing tapes 1 released from two adjacent reels of the same winding machine being spirally wound, i.e., the first reinforcing tape 11 is spirally wound on the outer peripheral wall of the plastic core tube 2 at a pitch P, and the second reinforcing tape 12 is spirally wound on the outside of the first reinforcing tape 11 at the same pitch P, and the second reinforcing tape 12 is completely or partially stacked on the first reinforcing tape 11. Figure 7 As shown, four reinforcing tapes 1 released from four reels of the same winding machine can be spirally wound, i.e. Figure 6 On the basis of the structure shown, the third reinforcement tape 13 is spirally wound on the outside of the second reinforcement tape 12 with the same pitch P, and the third reinforcement tape 13 is completely or partially overlapped ( Figure 7 fourth reinforcement tape 14 is spirally wound on the outside of the third reinforcement tape 13 with the same pitch P, and the fourth reinforcement tape 14 is completely or partially stacked on the third reinforcement tape 13.

[0033] Thus, in the production method of the present invention, during the winding step of winding the reinforcement tape 1 onto the plastic core tube 2, the reinforcement tapes 1 released from different reels of the same winding machine are spirally wound in an at least partially overlapping manner. Thus, when the plastic core tube 2 advances in a straight line along its axial direction and passes through a winding machine, multiple reinforcement layers can be formed on the outer circumference of the plastic core tube 2. This reduces the number of winding machines in the production line to less than the number of reinforcement layers required for a tape-reinforced composite plastic tube that meets performance requirements, effectively reducing the number of winding machines required for the production of tape-reinforced composite plastic tubes. Furthermore, during the production process, there is no need to wind and unwind the pipe multiple times, and it is convenient to use a reinforcement tape 1 with a wider width to form the reinforcement layer, thereby ensuring higher production efficiency and the quality of the resulting pipe.

[0034] It should be understood that, in the winding step, the production method of the present invention is not limited to the situation where the reinforcement tapes 1 released from adjacent reels of the same winding machine are stacked one after another, but can be stacked and wound in other ways. For example, in the winding step using a four-reel winding machine, the third reinforcement tape 13 is stacked and wound around the periphery of the first reinforcement tape 11, and then the second reinforcement tape 12 and the fourth reinforcement tape 14 are stacked and wound around the periphery of the third reinforcement tape 13, which can also efficiently produce qualified pipes.

[0035] As previously mentioned, the reinforcement tapes 1 released from each reel of the same winding machine can have the same bandwidth d and be helically wound around the outer circumference of the plastic core tube 2 using the same spiral parameters, making it relatively easy to achieve uniform strength at all locations along the circumference of the resulting pipe. In other embodiments, different reinforcement tapes 1 can have different bandwidths or be wound using different spiral parameters, but this requires complex winding process design and control to meet pipe strength requirements.

[0036] exist Figure 5In the preferred embodiment shown, a first reinforcement tape 11 and a second reinforcement tape 12 are released from two adjacent tape reels on the same winding machine. The first reinforcement tape 11 is directly bonded to the outer circumferential wall of the plastic core tube 2, while the second reinforcement tape 12 is helically wound around the outer circumference of the first reinforcement tape 11. Specifically, the first reinforcement tape 11 is positioned as an inner layer, while the second reinforcement tape 12 is positioned as an outer layer and separated from the plastic core tube 2 by the first reinforcement tape 11. The second reinforcement tape 12 is helically wound so as to completely overlap the first reinforcement tape 11. In other words, the stacking width L of the second reinforcement tape 12 and the first reinforcement tape 11 satisfies the following equation: L = d / sinα.

[0037] It is understandable that Figure 5 For ease of illustration, only two reinforcement tapes are shown. A four-reel winding machine can be used to wind four reinforcement tapes. The four reinforcement tapes are wound onto the plastic core tube 2 at points evenly distributed along the circumference of the tube. Through the aforementioned winding process, the second reinforcement tape 12 completely overlaps the first reinforcement tape 11 in the thickness direction. In other words, during the winding process, with the first reinforcement tape 11 as a reference, when the second reinforcement tape 12 is spirally wound onto the first reinforcement tape 11, the first side 12a of the second reinforcement tape 12 is aligned with the first side 11a of the first reinforcement tape 11, and the second side 12b of the second reinforcement tape 12 is aligned with the second side 11b of the first reinforcement tape 11. Similarly, the corresponding side edges of the third and fourth reinforcement tapes are also aligned. Thus, when the plastic core tube 2 is advanced linearly along its axial direction and passes through one winding machine, four reinforcement layers are formed on the outer circumference of the plastic core tube 2. Using five four-reel winding machines, 20 reinforcement layers can be formed.

[0038] Figure 5 The winding method shown effectively prevents a portion of the outer reinforcement tape (second reinforcement tape 12) from directly pressing against the outer wall of the plastic core tube 2, thereby affecting the quality of the pipe in that area. However, because the four layers of reinforcement tape have the same winding gap 4, the portion between adjacent spirals cannot be reliably reinforced, affecting the performance of the pipe.

[0039] exist Figure 6 and Figure 7 In another preferred embodiment shown, the outer reinforcement tape 1 released from adjacent reels of the same winding machine is stacked on the two adjacent spirals of the inner reinforcement tape 1 at its two side edges. Figure 3 and Figure 4 As shown, the first reinforcement tape 11 is spirally wound on the outer wall of the plastic core tube 2 at a spiral angle α, and there may be a winding gap 4 between adjacent spirals or they may be adjacent to each other, but the spacing between adjacent spirals △ < d / sinα (or 0); the second reinforcement tape 12 is spirally wound on the outer circumference of the first reinforcement tape 11 at the same spiral angle α, as shown in FIG. Figure 6As shown, the side edges of the second reinforcement tape 12 are laminated onto two adjacent spirals of the first reinforcement tape 11, spanning the winding gap 4 and being laid around the outer circumference of the first reinforcement tape 11. In other words, the lamination width L of the corresponding spirals of the second reinforcement tape 12 and the first reinforcement tape 11 satisfies L < d / sinα. This arrangement allows the reinforcement tapes 1 released from different reels of the same winding machine to be staggered and laminated, effectively ensuring uniform strength at all circumferential locations of the resulting pipe.

[0040] For example, the stacking width L of corresponding spirals of the outer reinforcement tape 1 and the inner reinforcement tape 1 released from adjacent reels of the same winding machine can be (n-1)d / nsinα, where n is the number of reels on the winding machine. That is, the stacking width L of the stacked reinforcement tapes 1 is (n-1) / n of the width of the projection line of the reinforcement tape 1 on a vertical plane passing through the central axis of the pipe. The stacking width of adjacent spirals of the inner reinforcement tape 1 is approximately d / nsinα.

[0041] It is understandable that Figure 6 For the sake of clarity, only two reinforcement tapes are shown, which can be wound by a four-reel winding machine to have four reinforcement tapes, such as Figure 7 As shown. The winding points of the four reinforcement tapes on the plastic core tube 2 are evenly distributed along the circumference of the plastic core tube 2. Through the above-mentioned winding steps, the second reinforcement tape 12 partially overlaps with the corresponding spiral of the first reinforcement tape 11 in the thickness direction. In other words, in the winding step, with the first reinforcement tape 11 as a reference, when the second reinforcement tape 12 is spirally wound onto the first reinforcement tape 11, the first side edge 12a of the second reinforcement tape 12 is offset by a predetermined distance relative to the first side edge 11a of the corresponding spiral of the first reinforcement tape 11 along the forward direction of the pipe, and the second side edge 12b of the second reinforcement tape 12 is also offset by a predetermined distance relative to the second side edge 11b of the corresponding spiral of the first reinforcement tape 11 along the forward direction of the pipe. Similarly, the corresponding side edges of the third and fourth reinforcement tapes are also offset accordingly.

[0042] When there is a winding gap 4 between adjacent spirals of the same reinforcement tape, the pitch P of the spiral winding of the reinforcement tape satisfies P = (d + Δ) / sin α, where Δ is the spacing between adjacent spirals of the reinforcement tape 1 released from the same reel. In a preferred embodiment of the present invention, Δ ranges from 0 mm to 5 mm, such as 2 mm.

[0043] The production line of the tape-reinforced composite plastic pipe can be arranged with multiple winding machines. Along the moving direction of the plastic core tube 2, the reinforcement tape 1 released by the winding machine arranged downstream is spirally wound on the reinforcement tape 1 released by the winding machine arranged upstream to form multiple reinforcement layers, for example Figure 8As shown, the first reinforcement layer 10 and the second reinforcement layer 20 are shown. As mentioned above, the points at which the reinforcement tapes 1 released by the respective reels of each winding machine are wound onto the plastic core tube 2 are evenly distributed along the circumference of the plastic core tube 2. This ensures that the circumferential force on the tube is symmetrical, thus preventing the plastic core tube 2 from being pulled off during the production process. In addition, the reels of adjacent winding machines rotate in opposite directions, so that the released reinforcement tapes 1 are wound onto the plastic core tube 2 in opposite directions, for example, Figure 8 As shown, the first reinforcement tape 11, the second reinforcement tape 12, the third reinforcement tape 13 and the fourth reinforcement tape 14 released by the first winding machine arranged along the forward direction of the pipe are spirally wound on the outer peripheral surface of the plastic core tube 2 to form a first reinforcement layer 10; the second winding machine arranged after the first winding machine rotates in the opposite direction, and the reinforcement tapes released by it are spirally wound on the periphery of the first reinforcement layer 10 to form a second reinforcement layer 20, thereby preventing the plastic core tube 2 from rotating during the production process.

[0044] In addition, the production method of the present invention may further include the steps of extruding the plastic core tube 2 and compounding the plastic outer tube 3 on the outer periphery of the reinforcement tape 1 before the winding step.

[0045] Based on the above production method, the present invention also provides a belt-type reinforced composite plastic pipe produced by the production method.

[0046] The preferred embodiments of the present invention have been described in detail above with reference to the accompanying drawings. However, the present invention is not limited thereto. Within the scope of the technical concept of the present invention, the technical solution of the present invention may be subjected to a variety of simple modifications, including combining the various specific technical features in any suitable manner. To avoid unnecessary repetition, the present invention will not further describe various possible combinations. However, these simple modifications and combinations should also be regarded as disclosed in the present invention and fall within the scope of protection of the present invention.

Claims

1. A method for producing a belt-type reinforced composite plastic pipe, characterized in that: The invention comprises a winding step of winding a reinforcement tape (1) onto a plastic core tube (2) by using a winding machine, wherein the winding machine has a plurality of reels for simultaneously releasing the reinforcement tape (1), wherein: In the winding step, a plurality of the reinforcing tapes (1) released from a plurality of the tape reels of the same winding machine are spirally wound on the plastic core tube (2) in an at least partially overlapping manner. The reinforcing tapes (1) released by the respective tape reels of the same winding machine have the same bandwidth d. In the winding step, the reinforcing tapes (1) released by the respective tape reels of the same winding machine are spirally wound on the plastic core tube (2) at the same helical angle α. In the winding step, the pitch P of the reinforcing tape (1) wound spirally on the plastic core tube (2) satisfies: P≥d / sinα, and the reinforcing tape (1) on the outer layer released by the adjacent tape reels of the same winding machine is respectively stacked on the two adjacent spirals of the reinforcing tape (1) on the inner layer at its two side edges. The stacking width L of the corresponding spirals of the reinforcement tape (1) located in the outer layer and released by the adjacent tape reels of the same winding machine and the reinforcement tape (1) located in the inner layer satisfies: L<d / sinα, or the reinforcement tape (1) located in the outer layer and released by the adjacent tape reels of the same winding machine is spirally wound to completely overlap with the reinforcement tape (1) located in the inner layer.

2. The method for producing a belt-type reinforced composite plastic pipe according to claim 1, characterized in that: In the winding step, the pitch P of the reinforcing tape (1) wound spirally on the plastic core tube (2) satisfies: P = (d + △) / sinα, wherein △ is the spacing between adjacent spirals of the reinforcing tape (1) released from the same reel and ranges from 0 mm to 5 mm.

3. The method for producing a belt-type reinforced composite plastic pipe according to claim 1, characterized in that: The production method further comprises the steps of extruding the plastic core tube (2) before the winding step and compounding a plastic outer tube (3) on the periphery of the reinforcement band (1).

4. The method for producing a belt-type reinforced composite plastic pipe according to claim 1, characterized in that: A plurality of winding machines are arranged in a production line for executing the production method, and the winding points of the reinforcing tapes (1) released by the respective tape reels of the same winding machine on the plastic core tube (2) are evenly distributed along the circumference of the plastic core tube (2), and along the moving direction of the plastic core tube (2), the reinforcing tapes (1) released by the winding machine arranged downstream are spirally wound on the reinforcing tapes (1) released by the winding machine arranged upstream.

5. The method for producing a belt-type reinforced composite plastic pipe according to claim 4, characterized in that: Each of the winding machines has an even number of the tape reels.

6. The method for producing a belt-type reinforced composite plastic pipe according to claim 4, characterized in that: In the winding step, the rotation directions of the reels of the adjacent winding machines are opposite, so that the released reinforcement tape (1) is wound on the plastic core tube (2) in the opposite rotation direction.

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