For any product that comes out of the factory, good quality control practice guarantees consistent quality with every single item in the production line. Even in packaging lines, defects can be found from sealing, packaging material, and volume or weight of the content. For example, dairy products, such as grated cheese packed in plastic bags or pouches, need to be sealed properly as exposure or contamination can cause the product to deteriorate rapidly. In addition, the development of molds from outside bacteria can be detrimental to the consumers’ health. Therefore, as part of a quality check, you can use inspection machines to detect such defects in the packaging line.