CategoryMaterials & Sheet Quality
Recycled Content Variability
Manage changes in melt strength, color, odor, moisture, contamination, shrinkage, and forming behavior caused by inconsistent recycled or regrind content.
Thermoforming Wiki
Diagnose thermoforming defects by symptom, cause, process area, and material.
CategoryCooling, Shrinkage & Demolding
Residual Stress Cracking After Thermoforming
Prevent delayed cracking caused by low forming temperature, incomplete forming, sharp geometry, forced release, solvents, assembly loads, or thermal cycling.
CategoryVacuum, Pressure & Pneumatics
Restricted Vacuum Flow
Locate restricted vacuum lines, valves, manifolds, filters, and tool channels that delay forming even when the pump reaches the expected vacuum level.
CategorySurface Quality & Contamination
Rough Mold Surface Transfer
Correct unwanted texture copied from rough, porous, damaged, or contaminated tooling and select a mold finish suited to the final part surface.
CategoryTrimming & Secondary Operations
Router Melt Marks on Thermoformed Parts
Prevent melted edges and rewelded chips by balancing router speed, feed, cutter geometry, chip evacuation, cooling, support, and material temperature.
CategoryProcess Control & Machine Diagnostics
Sag Sensor Calibration Error
Correct false sag detection caused by dirty optics, sheet color, reflections, frame position, sensor alignment, threshold settings, and mechanical movement.
CategorySurface Quality & Contamination
Scratches on Thermoformed Parts
Trace scratches to sheet handling, masking, dust, mold contact, stacking, trimming, or release and prevent damage at the correct process stage.
CategoryProcess Control & Machine Diagnostics
Servo Homing and Position Error
Correct plug, platen, clamp, and transfer position errors caused by homing faults, encoder drift, lost motion, limits, or mechanical slip.
CategoryClamping, Sheet Loading & Tool Setup
Sheet Edge Damage Before Forming
Prevent nicks, saw cuts, cracks, crushed edges, and handling damage from propagating into clamp-zone tears or formed-part fractures.
CategoryClamping, Sheet Loading & Tool Setup
Sheet Miscentering in Thermoforming
Prevent off-center forming and uneven material supply by controlling cut-sheet size, squareness, loading stops, automation, clamp sequence, and detection.