Magnetic closure system for closing e.g. bottle to store perfume, has annular area provided with four magnetic zones with alternate polarity, which is designed to be overlooked by magnetic unit in container

摘要

The system has a magnetic unit (16) with permanent magnetization carried by a magnetic pull cap/lid (15), and another magnetic unit (12) i.e. metal ring, made of a magnetic material, with permanent magnetization carried by a container (10) such that the magnetic units exert the magnetic pull cap/lid on the container in a closed position. A plastic magnetic portion comprises an annular area (17) provided with four magnetic zones with alternate polarity, which is designed to be overlooked by the latter magnetic unit in the container. The plastic magnetic portion contains thermoplastic material of standard polyamide or polypropylene. The thermoplastic material is mixed with a magnetic powder, where the magnetic powder is a ferrite powder containing strontium or a powder of rare earth containing neodymium or neodymium.