There are many types of plastic packaging bags, and there are many materials for making plastic packaging bags. Therefore, in order to ensure safety, this needs to be strict at the time of acceptance. What are the requirements for plastic bags when inspecting?
First, the single-film plastic packaging bag should be achieved during the acceptance: the appearance must not have the use of bubbles, perforations, water lines, gluten, poor plasticization, fisheye and other stiff spots. Specifications, width, length, and thickness deviation shall be within the specified range. Physical and mechanical properties include tensile strength and elongation at break. It reflects the ability of the product to stretch with the product. If this is not acceptable, the food packaging bag is prone to cracking and damage during use.
Second, the plastic packaging bag of composite film should be achieved at the time of acceptance: the appearance should be smooth, no scratches, burns, bubbles, oil breaks and wrinkles, heat seal flat, no virtual seal. The film must be free of cracks, voids and composite layers. No pollution, foreign matter and oil stains. In addition, the bag soaking liquid must not have odor, odor, turbidity and discoloration.
Plastic packaging bags are very strict when used for packaging. They must be non-toxic, harmless, comply with national laws and regulations, and comply with the corresponding mandatory standards, but the packaging must have clear identification: trademark, license label, origin , the site, the name of the company, the date of manufacture, the main components of the product, etc.
