Product Name | PVC WPC Panel Profile Extrusion Mould |
Mould material | 3Cr13,3Cr17,din1.2317 stainless steel |
Mould cavity | 1 or multi-cavity |
Features | various foaming types: free foaming, foamed skinning, co-extrusion foaming Wood-like process & formula development and supply |
Test | Mould will be tested to get the satisfied sample before delivery |
Lead time | Less than 45 days, 30-40 days Usually |
ODM&OEM | Accept |
Extruded Products Flaws Solution | ||||
Product Flaws | Reasons | Solution | ||
Distortion | Too short cooling time, not enough cooling for finished one | delay the cooling time | ||
Too rapid speed for extrusion, forced pull to lead the distortion | Slow down the speed of extrusion die | |||
Finished product structure with defects | Modify the dies | |||
Too high temperature for die, poor cooling for finished products | reduce the mould temperature | |||
Knit line | Insufficient injection pressure, too slow injection speed, too small gate and flowing pipe | Increase the injection pressure and speed, modify the gate and flowing pipe. | ||
Too low forming temperature and mould temperature | Increase temperature and back pressure or accelerate the rotating speed . | |||
Insufficient exhaust in interflow zone and no run-off pit | Fix exhausting holes in inter flow zone and increase the number of run-off pits. | |||
Use too much release agent | Reduce to use release agent | |||
Poor luster | Too slow injection speed, insufficient pressure and low mould temperature | Increase the injection speed, injection pressure and mould temperature | ||
Hydrosphere or grease pollution in the mould cavity | Clean it up | |||
Poor grinding of mould surface or too small gate and flowing pipe | Modify mould | |||
Insufficient injection quantity or water contained in the raw material | Increase the injection pressure and injection speed, delay the jet | |||
Cracks of finished products | Too low temperature of material or mould | Increase the temperature | ||
Insufficient stripping lean or improper extrusion way | Modify the mould | |||
Too small gate | Modify the mould | |||
Insufficient stripping angle | Modify the mould | |||
Coarse surface finished products | Too low forming temperature | Increase the temperature, accelerate the rotating speed of screw | ||
Too low mould temperature | Increase the mould temperature | |||
Surface blocks of extruded one | Not clean material pipes, contain wastes | Clean up material pipe | ||
The additive articles such as color master batch are not done according to the requirements | need the corresponding color master batch | |||
Expansion of extruded one | Too low temperature of mould head or too fast rotating speed of screw | Increase the mould head temperature and reduce the rotating speed of screw | ||
Pits of extruded one | Too fast limited material | Adjust the limited material device | ||
Water contained in the raw material | Dry the material | |||
Too high meting temperature, too fast rotating speed of screw | Reduce the meting temperature, and the rotating speed of screw |