Pipe Extrusion tooling
Pipes are mainly used in water inlet pipes, drainage pipes, sewage pipes, etc. The main materials are PVC, PP, PE, ABS, PPR, PC, PMMA, PS and other engineering plastics。If you encounter any problems during the production process, please refer to the detailed instructions below.
Handling of difficult problems in pipe mold production：
1.Below the produced pipe, there is a black or yellow line (see the picture for details);
the reason is that the accuracy of the barrel and screw of the extruder is not up to standard, or the wear is serious after a long time of use, they will rub against each other, and the material will be partially over-cut, resulting in carbonization, and the produced profile will have 1 or more black lines at the bottom.The solution is that there is no need to replace the new screw, reduce waste, and use our aona extrusion tooling company’s patented product (patent number: ZL 2018 2 1246316.9) (see the picture for details).
It can be resolved immediately after installation. If it cannot be resolved, aona extrusion mould company will be unconditionally responsible for the round-trip freight and an unconditional full refund.；
2.In the production process, the wall thickness is unstable, sometimes fast, sometimes slow, and the position is not fixed. This is caused by insufficient mold pressure. It can be solved by increasing the straight section of the mold and increasing the compression angle of the manifold; The wall thickness is unstable, and there is a special reason. If the extrusion capacity of the extruder is small and the cross-sectional area of the mold is large, this situation will also occur, but this situation is rare.；
3.The physical properties of the products produced are not up to standard: A.The raw materials do not meet the national standards, the solution is to replace the standard grade raw materials; B.The barrel and screw of the extruder are severely worn out, resulting in poor plasticization. The solution can be solved after replacing the new barrel and screw; C.The pressure design of the mold is unreasonable. By replacing the mold accessories, increasing the length of the straight section and the angle of the confluence plate, the pressure of the mold is increased, so that the mold will give the extruder sufficient reasonable back pressure, so that the material can be evenly plasticized and a higher compactness can be obtained, so that qualified products can be produced after modification.；
4.If you encounter other problems in production, you can contact AONA extrusion mold at any time. The technical team with 28 years of technology and experience will solve them for you in time.；
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