Injection Blow Injection Blow Molding (IBM)
DIMENSIONS "h", "s", "t" and "e"
Recommended Actions
"H"- height • Increase by moving parison mold and/or blow mold out-ward (add shim).
• Reduce by moving parison mold and/or blow mold inward (remove shim).
"S"- neck finish • Increase by moving parison mold and/or blow mold out-ward (add shim).
• Reduce by moving parison mold and/or blow mold inward (remove shim).
"T"- average of "h" and "s" • Reduce parison mold's neck temperature
• Verify temperature control unit operation.
To raise "t" • Increase the injection time
• Increase the hold time.
• Reduce the blow mold and/or parison mold neck temperature.
• Increase the internal core rod cooling.
To lower "t" • Increase the parison mold and/or blow mold neck temperature.
• Reduce core rod cooling.
• Plumb hot water to blow mold neck.
"E" (taken across major and minor axes) • Reference to "T dimension
- "H"- height
- Increase by moving parison mold and/or blow mold out-ward (add shim).
- Reduce by moving parison mold and/or blow mold inward (remove shim).
- "S"- neck finish
- Increase by moving parison mold and/or blow mold out-ward (add shim).
- Reduce by moving parison mold and/or blow mold inward (remove shim).
- "T"- average of "h" and "s"
- Reduce parison mold's neck temperature
- Verify temperature control unit operation.
- To raise "t"
- Increase the injection time
- Increase the hold time.
- Reduce the blow mold and/or parison mold neck temperature.
- Increase the internal core rod cooling.
- To lower "t"
- Increase the parison mold and/or blow mold neck temperature.
- Reduce core rod cooling.
- Plumb hot water to blow mold neck.
- "E" (taken across major and minor axes)
- Reference to "T dimension
Related Knowledge
Source
Imported from Molding Defects All Platforms spreadsheet