A single-sided magnet is a magnet that is magnetic on one side and weak on the other side. The method is to use a specially treated galvanized iron sheet to hold a piece of bread on the double-sided magnet so that the magnetic side of the package is shielded and the magnetic force is refracted to the other side. Make the other side magnetically enhanced. For example, the magnet on the box only needs to be magnetic on one side and magnetic on the other side, so the use of single-sided magnet will greatly reduce the cost and save magnetic materials. The magnetic refraction of a single-sided magnet is like the refraction of the signal by the satellite pot or the refraction of the light by the flashlight pot. The refraction effect is mainly determined by the following three aspects:
1. Material: The thickness of the material and the distance between the magnet and the material are all related. Pure iron is easy to leak magnetic, and the refraction will be enhanced after special treatment, but the 100% shielding material has not been studied, but the materials made by different manufacturers have different effects.
2. Angle: According to the principle of refraction, the curved material has the best effect, and the right angle material has a large loss of refraction.
3. Space: The magnetic lines of force are like the mobile phone signal in the air, and need space to reflect. If the flashlight lamp pot is completely wrapped in the lamp, the effect is definitely not good, because a large amount of light refraction is lost.
How to use the above principle, the best effect of magnetic enhancement, is the best problem between many parameters, many manufacturers are also doing experiments repeatedly, such as the ideal result of single-sided magnetic processing of Xi'an Guotai Magnet Factory is enhanced by 50% In this way, in the field of packaging boxes and the like, the production cost will be greatly reduced and the magnetic material can be saved.