| Splay (Silver Streaking) | |
| Possible Cause | Suggested Remedy |
| Excess moisture in material during processing | a. Review material handling to eliminate moisture pick up b. Dry material prior to moulding c. Utilize hopper dryers |
| Melt temperature too high | a. Decrease barrel temperatures b. Decrease nozzle temperature |
| Excessive shear heat from injection | a. Decrease injection rate b. Reduce screw RPM c. Increase runner size and/or gates d. Check for nozzle obstruction |
| Air entrapment | a. Reduce screw decompression b. Improve mould venting |
| Condensation and/or excessive lubricant on mould surface | a. Increase mould temperature b. Clean mould surface with solvent c. use mould release sparingly |
| Moisture condensing in feed section of barrel | a. Decrease throat cooling b. Increase rear zone temperature setting |