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A single-sided magnet refers to a magnet with magnetic on one side and weaker magnetic on the other side. The method is to wrap one side of the double-sided magnet with a specially treated galvanized iron sheet, so that the magnetism of the wrapped side will be shielded and the magnetic force will be refracted to the other side. The magnetism on the other side will increase. The magnetic refraction of a single-sided magnet is similar to the refraction of signals by a satellite pan or the refraction of light by a flashlight pan. The refraction effect is mainly determined by the following three aspects:

1. Materials used: The choice of single-sided magnet material, its thickness, and the distance between the magnet and the material are closely related. Pure iron sheets are prone to magnetic leakage, and refraction will increase after special treatment. However, 99% shielding materials have not been studied yet, but the effects of materials made by different manufacturers are different.

2. Angle: According to the principle of refraction, curved materials have better effects, and right-angle materials have greater refraction loss.

3. Space used: The magnetic field lines are like mobile phone signals in the air, and they need space to be reflected. If the flashlight pot is completely wrapped on the bulb, the use effect is definitely not good, because a lot of light refraction is lost.

How to use the above principles to enhance the magnetic effect of single-sided magnets is a question of seeking better results among many parameters. This will greatly reduce production costs and save magnetic materials in the fields of packaging boxes and bags.