Verify that plastic raw materials (such as PE, PP, PET, etc.) meet specified requirements.
Check melt flow index (MFI), moisture content, and masterbatch dispersion.
Appearance Inspection
Inspect finished products for color differences, bubbles, burns, short shots, cracks, or other molding defects.
Dimensional Measurement
Use gauges, vernier calipers, or 3D scanners to measure dimensions such as neck size, wall thickness, overall length, width, and height to ensure compliance with drawing tolerances.
Wall Thickness Testing
Confirm wall thickness uniformity and compliance using ultrasonic thickness gauges or cutting and measuring methods.
Leak Test (Air/Water Pressure Test)
Use air pressure or hydrostatic leak testers to detect leakage issues, especially for fuel containers, water bottles, and automotive parts.
Impact Resistance Test
Simulate drop or collision scenarios to verify that hollow plastic products have sufficient impact strength.
Vacuum/Pressure Strength Test
Perform vacuum or internal pressure testing on container products to check for deformation or rupture.
Functional & Assembly Testing
Test assembly and operation of products with caps, handles, nozzles, or other functional structures to ensure proper usability.
In-Process Sampling Inspection
Conduct sampling inspections during mass production according to QC standards to ensure batch stability and prevent defects.