Inspection and analysis of rPET material
Malaysia-based Hiroyuki Industries (M) Sdn Bhd has implemented Sikora’s optical inspection system, the PURITY CONCEPT V, for the inspection and analysis of rPET material. Integrated into the company’s quality control laboratory, the system is used to inspect rPET samples before shipment. It automatically detects visual defects such as black specks, discolourations, and other contaminants as small as 50 micrometres. According to the company, the use of the automated system helps improve accuracy and efficiency compared with manual inspection processes.
Hiroyuki specialises in rPET resin and packaging solutions for the food and beverage industry. Its product portfolio includes food-grade rPET resin for bottle-to-bottle recycling, as well as strapping bands, stretch films, and tying twines for general packaging applications.
The company reports that the inspection system has contributed to improved product consistency by enabling earlier defect detection and allowing for quicker corrective actions. Each inspection is recorded and archived, providing data that supports traceability, customer assurance, and regulatory audits. The recorded information includes the number and size of detected defects, which can be used to identify trends and guide process optimisation.
Looking ahead, Hiroyuki plans to further expand its operations into a regional hub for rPET resin, preform, and bottle production.
Photo: Angel Loh, Chemist at Hiroyuki with rPET pellet samples to be inspected by the PURITY CONCEPT V system.