As a packaging supplier, quality is of the utmost importance to meet customer specifications. Specifically, for food grade products, the finished sheet cannot have dirt. While the mill’s quality was already high, management wanted to certify the quality of their product to go after new markets and ensure profit wasn’t being lost due to unnecessary rejects.
The visible dirt in a sheet can significantly affect the quality of the end product. Both the amount and visual impact (area and intensity) of the dirt may be important quality factors. Thus, one of the most beneficial quality testing procedures is dirt counting and dirt area classification, which analyzes the content of foreign materials in the product. To help see and quantify the dirt on the final product, ABB installed a Web Imaging Dirt Count system capable of capturing accurate dirt count across the full sheet. Unlike other technology that counts dirt based on single sheets or narrow webs, ABB Web Imaging Dirt Count detects, classifies and statistically quantifies information across one hundred percent of the web, providing more certainty if rolls need to be downgraded.