Interactive Engineering Knowledgebase

Shop-Floor Defect Atlas & Troubleshooting Matrix

Diagnose rubber compounding, extrusion, and curing anomalies with structured root-cause analysis.

Tread Vent Blockage / Blow Holes

Curing
Visual Symptoms Deep indentations, rubber-filled vent holes, or gas pockets trapped on the outer tread pattern surface.
Root Causes Vents clogged with release agent or rubber debris, or excessive moisture/volatiles in the green compound.
Corrective Actions Establish a routine mold cleaning and vent wire-cleaning schedule, and check green stock storage humidity.

Under-cure / Soft Spots

Curing
Visual Symptoms Low durometer hardness, tacky innerliner, or incomplete cross-linking identified during destructive testing.
Root Causes Steam or press temperature too low, short cycle timer, faulty mold heating platens, or incorrect bladder pressure.
Corrective Actions Verify press thermocouple readings, inspect steam trap operation, check cure timer calibration, and validate bladder inflation sequence.

Under-cure / Soft Spots

Curing
Visual Symptoms Low durometer hardness, tacky innerliner, or incomplete cross-linking identified during destructive testing.
Root Causes Steam or press temperature too low, short cycle timer, faulty mold heating platens, or incorrect bladder pressure.
Corrective Actions Verify press thermocouple readings, inspect steam trap operation, check cure timer calibration, and validate bladder inflation sequence.

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