Manufacturing process material production, blow molding, injection molding, die blanking, waste crushing, simple, assembly, final inspection and storage.
As far as the general public is concerned, it is more difficult to judge whether a plastic chemical barrel is for industrial use or for food only from its appearance. Experts explain that the materials of plastic chemical barrels are mostly made of polyethylene, polypropylene, polyester and other plastics by blow molding, injection molding, suction molding and rotomolding. Take polyethylene (PVC) as an example. It is used in industrial production of plastic chemical barrels. It is an epoxy resin composed of polyvinyl chloride resin, flame retardant and anti-aging agent. It is safe by itself. However, the main auxiliary materials such as flame retardants and antioxidants that have been promoted have toxic and side effects. Polyethylene (PVC) handicrafts containing lead salt antioxidants and alcohol, ether and other organic solvents will separate lead when they are touched.
Polyethylene containing lead salt as food packaging meets fritters, fried cakes, fried fish, cooked meat food crafts, cakes and snack foods, it will loose the lead molecular structure into vegetable fats, so polyethylene packaging cannot be applied Bags should contain food, especially foods containing oil.
In addition, PVC plastic arts and crafts will gradually dissolve hydrogen chloride gas at a higher temperature, such as 50 ℃ operation, this gas is harmful to the body, so polyethylene arts and crafts are not suitable as food turnover materials. Experts say that today's plastic products used for food packaging are generally made of polyethylene (PE). Polyethylene is safe and is used in water pipes, oil tanks, mineral water bottles, etc. Experts said that apart from polyethylene plastic containers, there are also polypropylene plastic products that can be used to contain sauce products, vinegar, wine, fruit juices and vegetable fats, etc. Food polyester plastic containers are most suitable for holding various carbonated beverages, Pure water, edible oil and seasoning etc.