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Strengthened carat tube and manufacturing method thereof

A manufacturing method and carat tube technology, which are applied in the directions of hoses, pipes, rigid pipes, etc., can solve the problems of increased winding difficulty, weak rigidity and complex processing technology of single-wall corrugated pipes.

Inactive Publication Date: 2017-03-08
HESHAN LESSO IND DEV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Carat pipe is an environmentally friendly and safe product with the advantages of light weight, strong pressure bearing capacity, high interface quality, long life, corrosion resistance, high ring stiffness, and convenient construction. It is widely used in urban water supply, drainage, and long-distance water delivery. And farmland water conservancy irrigation and other projects, but carat pipes still have the following disadvantages: (1) The rigidity of PE material is too low. In order to meet the standard of high ring rigidity pipes, it is necessary to increase the amount of PE material, which will lead to a decrease in product cost performance; ( 2) When producing large-diameter, high-ring-stiffness carat pipes, even if PE materials are added, the requirements for manufacturing high-ring-stiffness products cannot be met. Therefore, it is necessary to produce pipes with a multi-layer structure. This method further reduces the cost performance of the product and greatly significantly reduced production efficiency
[0003] In the prior art, most carat tubes are strengthened by means of reinforcing single-wall corrugated pipes, such as: adding reinforcing ribs of different structures and materials inside the single-wall corrugated pipes; filling the single-wall corrugated pipes into solid Add steel rings to the wall of the single-wall corrugated pipe to strengthen, but the winding difficulty of the single-wall corrugated pipe reinforced by these methods increases, and at the same time, it also increases the cost of manufacturing carat pipes, and its processing technology is also more advanced. for complex
In addition, these methods only strengthen the part where the single-wall corrugated pipe is wound, and the rigidity of the part where the single-wall corrugated pipe is not wound is still weak

Method used

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  • Strengthened carat tube and manufacturing method thereof
  • Strengthened carat tube and manufacturing method thereof
  • Strengthened carat tube and manufacturing method thereof

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Embodiment 1

[0036] This embodiment provides a reinforced carat tube, which includes a PP single-wall corrugated tube 1 , a PE wrapping layer 2 , an inner layer 3 and a rigid material 4 . The PP single-wall corrugated pipe 1 is wrapped by the PE wrapping layer 2 to form a support pipe 8 , and the rigid material 4 is wrapped in the inner layer 3 . Wherein, the material of the rigid material 4 is PP, and the volume ratio of the rigid material 4 to the inner layer 3 is 25%.

[0037] This embodiment also provides a method for manufacturing a reinforced carat tube, comprising the following steps:

[0038] S1: Extrude PE sheet and PP sheet from two extruders respectively, and then co-extrude the PE sheet coated with PP through co-extrusion die coating, and then wind the PE sheet in hot state On the mold 6, the inner layer 3 of the carat tube is formed;

[0039] S2: The PP single-wall corrugated pipe 1 is obtained by prefabrication; the PP single-wall corrugated pipe 1 is transported to the coa...

Embodiment 2

[0044] This embodiment provides a reinforced carat tube, which includes a PE single-wall corrugated tube 1 , a PE wrapping layer 2 , an inner layer 3 and a rigid material 4 . The PP single-wall corrugated pipe 1 is wrapped by the PE wrapping layer 2 to form a support pipe 8 , and the rigid material 4 is wrapped in the inner layer 3 . Wherein, the material of the rigid material 4 is PA, and the volume ratio of the rigid material 4 to the inner layer 3 is 20%.

[0045] This embodiment also provides a method for manufacturing a reinforced carat tube, comprising the following steps:

[0046] S1: extrude PE sheet and PA sheet respectively by two extruders, and co-extrude PE sheet coated with PA after coating by co-extrusion die 5, and then heat the PE sheet Winding on the mold 6 to form the inner layer 3 of the carat tube;

[0047] S2: The PE single-wall corrugated pipe 1 is obtained by prefabrication; the PE single-wall corrugated pipe 1 is transported to the coating mold 5 thro...

Embodiment 3

[0052] This embodiment provides a reinforced carat tube, which includes a PP single-wall corrugated tube 1 , a PE wrapping layer 2 , an inner layer 3 and a rigid material 4 . The PP single-wall corrugated pipe 1 is wrapped by the PE wrapping layer 2 to form a support pipe 8 , and the rigid material 4 is wrapped in the inner layer 3 . Wherein, the material of the rigid material 4 is ABS, and the volume ratio of the rigid material 4 to the inner layer 3 is 15%.

[0053] This embodiment also provides a method for manufacturing a reinforced carat tube, comprising the following steps:

[0054] S1: PE sheet and ABS sheet are extruded by two extruders respectively, and PE sheet coated with ABS is obtained by co-extrusion after co-extrusion die coating, and then the PE sheet is hot-wound On the mold 6, the inner layer 3 of the carat tube is formed;

[0055] S2: The PP single-wall corrugated pipe 1 is obtained by prefabrication; the PP single-wall corrugated pipe 1 is transported to ...

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Abstract

The invention discloses a strengthened carat tube. The tube body comprises supporting tubes and an inner layer, wherein the supporting tubes are obtained by wrapping a PE material around single-wall corrugated tubes, the inner layer is obtained through thermal state winding of a PE sheet, and the PE sheet is wrapped with a rigid material with elasticity modulus higher than that of PE. Meanwhile, the invention furthermore provides a manufacturing method of the strengthened carat tube. Compared with the prior art, a layer of high-rigidity material is subjected to co-extrusion in the extrusion process of the PE sheet, and after the high-rigidity material is arranged in the inner layer material in a wrapped manner, the effect of greatly improving the loop rigid degree can be reached when the tube is pressed due to the fact that the rigidity of the high-rigidity material is far higher than that of the PE material; furthermore, the method is more beneficial to production and manufacturing of large-diameter tubes. Meanwhile, due to the fact that the rigidity material is arranged in the PE sheet in a wrapped manner, other performances of a product are not influenced.

Description

technical field [0001] The invention relates to a large-diameter pipe, in particular to a reinforced carat pipe and a manufacturing method thereof. Background technique [0002] Carat tube, also known as HDPE winding structure wall pipe, is made of high-density polyethylene resin as the main raw material, adopts thermal winding molding process, and uses PP or PE single-wall corrugated pipe as auxiliary support tube, and is produced by thermal winding molding process High-density polyethylene large-diameter winding reinforced pipe. Carat pipe is an environmentally friendly and safe product with the advantages of light weight, strong pressure bearing capacity, high interface quality, long life, corrosion resistance, high ring stiffness, and convenient construction. It is widely used in urban water supply, drainage, and long-distance water delivery. And farmland water conservancy irrigation and other projects, but carat pipes still have the following disadvantages: (1) The rig...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F16L9/16F16L11/112F16L11/16B29D23/18
CPCF16L9/16B29D23/18F16L11/112F16L11/16
Inventor 伍荣业
Owner HESHAN LESSO IND DEV
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