Plastic product inspection can be divided into bai factory inspection and type inspection du. The factory inspection mainly inspects the dimensional deviation and appearance of the product (such as bubbles, spots, impurities, dents, etc.). This inspection is a daily production process. In progress. The type inspection mainly checks the physical and mechanical properties of the products (such as tensile load, elongation at break, hardness, etc.). This inspection must be carried out when the raw material formula or production process changes. Different plastic products performance technical requirements and inspection items are different, so the test methods and inspection equipment are also different. For example, plastic film inspection requires tape measure, plastic film thickness gauge, plastic tensile testing machine, punching machine, etc.