The detector of the metal detector is a "balanced coil" detector. This design can detect a variety of metal contaminants, including ferrous metals, non-ferrous metals and stainless steel in fresh and frozen foods. Whether packaged or not, the products can be tested, and the products packed with metal film can also be tested.
No matter how strict the management procedures are in the production process, and the corresponding protective measures are taken to deal with the mixing of metal foreign bodies, it can not be completely ruled out. Once these unqualified and unsafe products enter the market for sale, they will cause great harm to the health of consumers, and also lead to a significant decline in the brand effect of the company's products.
Metal pollution sources usually include the following four types:
1.Typical examples caused by raw materials include metal labels and syringe needles in meat products, metal wires in wheat, broken wire mesh in powder materials, tractor parts in vegetables, fishhooks and metal foreign bodies in material containers.
2.It is caused by manual operation errors, such as buttons, pens, jewelry, coins, keys, hairpins, pushpins, pins, paper clips, etc.
3.Caused by maintenance, maintenance tools such as screwdrivers, metal cutting chips and welding slag generated after maintenance, copper wire scrap after electrical maintenance, omission of other items caused by improper cleaning or negligence, and metal chips generated by pipeline maintenance.
4.Due to the processing in the factory, the mill, mixer, blender, slicer and transmission system will cause metal pollution when the products are transported or processed, such as broken screen, metal fragments generated by milling machine and foil in the recycled products.
The use of metal detector is a necessary means to prevent metal foreign bodies from mixing into products. As the first person responsible for product safety, enterprises should be responsible for protecting consumers' health and their own brand, and establish product safety culture.