CategoryClamping, Sheet Loading & Tool Setup
Correct scorching and discoloration near the clamp frame caused by excessive perimeter heat, hot metal contact, failed zones, long dwell, or poor shielding.
- Symptom
- Burns & Discoloration
- Cause
- Machine Setup & Controls, Heating & Temperature
- Material
- General / Multiple Materials
CategoryClamping, Sheet Loading & Tool Setup
Find clamp-frame bending that opens gaps, changes sheet tension, causes seal leakage, or produces asymmetric forming under heat and load.
- Symptom
- Process Variation & Asymmetry
- Cause
- Machine Setup & Controls, Mold Geometry & Material Distribution
- Material
- General / Multiple Materials
CategoryClamping, Sheet Loading & Tool Setup
Correct cold sheet margins and perimeter forming defects caused by heat loss into clamp frames, rails, masks, and heavy edge hardware.
- Symptom
- Process Variation & Asymmetry
- Cause
- Heating & Temperature, Machine Setup & Controls
- Material
- General / Multiple Materials
CategoryClamping, Sheet Loading & Tool Setup
Remove resin, oil, dust, release agent, masking fragments, and oxidation that reduce clamp grip or mark the sheet edge.
- Symptom
- Process Variation & Asymmetry
- Cause
- Machine Setup & Controls, Contamination & Handling
- Material
- General / Multiple Materials
CategoryClamping, Sheet Loading & Tool Setup
Diagnose unequal clamp force that causes sheet pull-in, edge tearing, air leakage, asymmetric draw, or inconsistent material distribution.
- Symptom
- Process Variation & Asymmetry
- Cause
- Machine Setup & Controls, Mold Geometry & Material Distribution
- Material
- General / Multiple Materials
CategoryClamping, Sheet Loading & Tool Setup
Stop sheet movement in the clamp frame by correcting grip, pressure, parallelism, edge temperature, contamination, sheet damage, and forming load.
- Symptom
- Process Variation & Asymmetry
- Cause
- Machine Setup & Controls, Heating & Temperature
- Material
- General / Multiple Materials
CategoryClamping, Sheet Loading & Tool Setup
Prevent tears at the clamped sheet edge by correcting temperature gradients, sharp grips, excessive force, damaged edges, pull-in, and poor frame alignment.
- Symptom
- Tearing, Cracking & Whitening
- Cause
- Machine Setup & Controls, Heating & Temperature
- Material
- General / Multiple Materials
CategoryTrimming & Secondary Operations
Eliminate chatter marks and dimensional variation by improving fixture rigidity, tool condition, spindle runout, feed, speed, support, and toolpath.
- Symptom
- Surface Appearance
- Cause
- Machine Setup & Controls, Moisture & Material Condition
- Material
- General / Multiple Materials
CategoryMaterials & Sheet Quality
Diagnose interlayer separation caused by incompatible structures, weak tie layers, moisture, excessive strain, overheating, poor sheet manufacture, or trimming stress.
- Symptom
- Tearing, Cracking & Whitening
- Cause
- Moisture & Material Condition, Machine Setup & Controls
- Material
- General / Multiple Materials
CategoryVacuum, Pressure & Pneumatics
Diagnose pressure forming and pre-stretch losses caused by undersized supply lines, shared demand, low receiver capacity, filters, valves, or leaks.
- Symptom
- Poor Detail & Incomplete Forming, Process Variation & Asymmetry
- Cause
- Pressure & Airflow, Machine Setup & Controls
- Material
- General / Multiple Materials
CategoryCooling, Shrinkage & Demolding
Stop mold condensation that causes water spots, haze, poor texture transfer, contamination, corrosion, and unstable part release.
- Symptom
- Surface Appearance
- Cause
- Cooling, Shrinkage & Release, Contamination & Handling
- Material
- General / Multiple Materials
CategoryVacuum, Pressure & Pneumatics
Prevent oil, water, rust, and particulate contamination from marking sheet, blocking valves, damaging seals, or creating unstable pneumatic motion.
- Symptom
- Surface Appearance
- Cause
- Pressure & Airflow, Contamination & Handling
- Material
- General / Multiple Materials
CategoryCooling, Shrinkage & Demolding
Diagnose uneven external cooling caused by failed fans, blocked airflow, poor aiming, variable speed, drafts, or asymmetric part shielding.
- Symptom
- Warping & Dimensional Distortion, Process Variation & Asymmetry
- Cause
- Cooling, Shrinkage & Release, Machine Setup & Controls
- Material
- General / Multiple Materials
CategoryCooling, Shrinkage & Demolding
Correct witness marks, locked dimensions, uneven shrinkage, and residual stress caused by poorly fitted thermoforming cooling jigs or nests.
- Symptom
- Surface Appearance, Warping & Dimensional Distortion
- Cause
- Cooling, Shrinkage & Release, Contamination & Handling
- Material
- General / Multiple Materials
CategoryCooling, Shrinkage & Demolding
Prevent mineral scale, corrosion products, biological growth, and process residue from reducing heat transfer and blocking thermoforming mold circuits.
- Symptom
- Process Variation & Asymmetry
- Cause
- Cooling, Shrinkage & Release, Contamination & Handling
- Material
- General / Multiple Materials
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