| The reasons for superfluous thin wings generated at the edge of workpieces and relevant solutions |
| Reasons | Solutions |
| 1 | Excessive injection | Reduce the volume of injected glue |
| 2 | Lack of clamping force | Increase clamping force |
| 3 | Excellent fluidity of material (e.g. PA/PP/PE/POM) | Change material/reduce mould temperature/reduce material temperature/reduce injection pressure |
| 4 | Parting surface is not tight enough. It has gaps or debris | Adjust mould. Redevelop the parts that are not closely fitted or remove debris |
| 5 | There is a large gap between sliding parts in mold cavity and core | Adjust mould. Reduce the gap between sliding parts in mold cavity and core |
| 6 | 6. The closing part of mould is overcut | Weld and rework the overcut parts |
| 7 | Low strength or rigidity of mould | Increase the thickness of template/increase templates or add support pillars |
| 8 | Low parallelism of bearing surface | Trim the mould so that all bearing surface can be parallel to each other |
| 9 | The mould is not completely compacted during installation | Reinstall and compact the mould |
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