Coextruding heat winding structure wall pipe, processing method and method

A technology of structural wall pipe materials and processing methods, which is applied in the direction of pipes, rigid pipes, household appliances, etc., can solve the problems of reducing product ring stiffness, affecting product ring stiffness, and high production costs, and achieves the effect of increasing strength

Active Publication Date: 2006-03-22
福建纳川管业科技有限责任公司
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AI Technical Summary

Problems solved by technology

At present, the production of this kind of plastic pipe generally adopts a single machine (one extruder) production method, and the plastic pipe used as a winding skeleton is produced by extruding a U-shaped arc belt from a mold and wrapping a polypropylene plastic pipe (referred to as pp pipe). , through online winding on the pipe with polyethylene flat belt as the base layer as a reinforcing rib, the pipe produced in this way has the following defects: 1. Sometimes polye...

Method used

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  • Coextruding heat winding structure wall pipe, processing method and method
  • Coextruding heat winding structure wall pipe, processing method and method
  • Coextruding heat winding structure wall pipe, processing method and method

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Embodiment Construction

[0029] figure 2 , figure 1 The structural features and processing methods of the prior art and the co-extruded hot-wound structural wall pipe of the present invention are shown, figure 2 The production method shown is that an extruder A feeds the flat belt extrusion die and the U-shaped belt extrusion die through the distribution valve C, extrudes the flat belt and the U-shaped belt, and the U-shaped belt is coated with polyethylene single-wall corrugated The tube is used as a skeleton, and the flat belt is wound together to form a tube. The processing method of the present invention is that two extruders A and B work together, one extrudes a flat belt 3, and the other extrudes a polyethylene-coated polypropylene single-wall corrugated pipe 2 through co-extrusion, and is hot-wound on the mold core on-line A tube is formed on the tube 4 . The specifications, quality and material consumption of these two products are compared in Table 1:

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Abstract

The present invention provides a kind of hot wound and extruded pipe and its production process and forming mold, and the new product with low material consumption and high annular rigidity is produced based on equivalent wall thickness principle. The hot wound and extruded pipe is produced through hot screw winding plastic belt onto mold core and extruding to coat with the same kind of material. The present invention can produce co-extruded polyethylene pp pipe and polyethylene coated polypropylene single wall corrugated pipe with high strength and capable of being used as the reinforcing pipe for great caliber pipe. The present invention has high production efficiency.

Description

technical field [0001] The invention relates to a co-extruded heat-wound structural wall pipe, a processing method and a mold, and belongs to the technical field of plastic pipe processing technology and equipment. Background technique [0002] At present, large-diameter plastic pipes belong to chemical building materials. They are replacement products of plastics for steel and plastics for cement. They are used in municipal drainage, long-distance low-pressure water delivery, mine and chemical drainage, farmland water conservancy irrigation and ventilation pipes and chemical containers. It is of great significance to save energy, reduce pollution and protect the environment. At present, the production of this kind of plastic pipe generally adopts a single machine (one extruder) production method, and the plastic pipe used as a winding skeleton is produced by extruding a U-shaped arc belt from a mold and wrapping a polypropylene plastic pipe (referred to as pp pipe). , thro...

Claims

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Application Information

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IPC IPC(8): F16L9/12F16L9/16B29D23/00B29C47/20B29C48/32
Inventor 王利群岳伏军
Owner 福建纳川管业科技有限责任公司
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