The DPS-EPI-8C preform inspection machine is a testing device specifically designed for PET preforms in the beverage, oil, and other related PET packaging industries. The equipment employs a unique optical path design, a multi-station architecture, and state-of-the-art image processing algorithms. Installed before filling, it can quickly and effectively improve the efficiency of post-filling equipment and enhance product quality.

Technical Features

• Maximum inspection speed: 36,000 pieces/hour;
• Touchscreen operation, multi-level user management, multi-language support;
• Modular inspection unit, standard high-speed rejection device;
• Equipped with a high-resolution camera and special LED light source;
• Equipped with real-time statistics and report generation;
• Utilizes a special wavelength and shape light source, which can better adapt to products of different colors.

Detection site	Inspection Item	Accuracy Specification
	Preform Body Contamination	Length × Width > 0.2mm × 0.2mm, Contrast > 35
	Preform Body Deformation	Local depression width > 1/4 of circumference (>90°)
	Scuff / Marking	>20% of bottle body area
	Bubble	Length × Width > 0.5mm × 0.5mm, clear outline visible in image
	Color Difference	Clearly distinguishable by naked eye
	Thread Damage	Length × Width × Height > 2.0mm × 1.0mm × 0.45mm
	Thread Contamination	Length × Width > 1.0mm × 1.0mm, Contrast > 35
	Hole	Length × Width > 0.3mm × 0.3mm
	Dirt / Stain	Length × Width > 0.4mm × 0.4mm, Contrast > 35
	Long Tail	> ±0.5mm
	Bottle Finish Inspection
	Finish Short Material	Length × Width × Height > 0.6mm × 0.6mm × 0.3mm
	Finish Contamination	Length × Width > 0.5mm × 0.5mm, Contrast > 25
	Finish Flash / Burr	Length × Width > 1mm × 1mm
	Finish Penetration	Width × Depth > 0.5mm × 0.5mm