At present, PERMANENT Rubber Magnets are mainly composed of magnetic powder (SrO6, Fe2O3), chlorinated polyethylene (CPE) and other additives (EBSO, DOP), and are manufactured by extrusion and calendering. It can be used without more machining, can be shaped according to the required size, or can be coated with PVC, Adhesive, UV oil, etc. according to customer requirements. Its magnetic energy product is 0.60~1.50 MGOe.
PERMANENT RUBBER FERRITE MAGNET
Flexible Plastic Magnets, Flat Sheet or Roll Shape.
The Anisotropic Rubber Magnets Are Made By Extrusion Or Injection. Properties Such As High Elasticity, Flexibility And Machinability Make These Magnets A Favorite Candidate For Many Permanent Magnet Applications In Industry And In Home Appliances.
The Isotropic Rubber Magnets Are Wide Use For Daily Necessary Industry,Make This Magnet In Toy,Family Edcation, Printting And Decoration,Etc.
Rubber magnet can be Anisotropic or Isotropic in magnetic properties, the main differences between two are as follows:
1 magnetic difference: Isotropic rubber magnet weak, and Anisotropic rubber magnet has a higher magnetic function.
2 work is suitable for different temperatures and densities, Isotropic rubber magnetic density and temperature are lower than Anisotropic rubber magnet.
3 different application areas: Isotropic rubber magnet is mainly used in refrigerator door, printed products, and promotional items, and Anisotropic one is widely used in micro-motors, computers, laser printers, copiers, magnetic toys and other fields.
In addition, there is also a bonded neodymium iron boron rubber, which is a new type of rubber magnetic product with higher performance, mainly used in high-grade door and window adsorption and magnetic health care products.
Rubber Magnet Sheet
Flexible Magnetic Sheeting is produced with calendering process. It is normally used in office appliance, advertising, checking and testing meters etc. According to its magnetization method, it is divided into penetration magnetization and surface magnetization.(pole width 2,4,7mm or 12,7/6.4/3.6 poles per inch).
As with all magnetic materials ,performance is difficult to quantify without going into complex formula. We strive in this section to give rules of thumb and an appreciation of different materials which will help in the selection of magnets. Hands-on testing is definitely recommended(with papers/air gaps as necessary) to select the best magnet for the job.
Material Types of rubber magnet sheet Material Max. Energy Product
a. Isotropic/semi Anisotropic Ferrite 0.7-0.8MGOe
b. Full Anisotropic Ferrite( High Energy Sheet) 1.1-1.4MGOe
c. Neodymium Flexible Material 2.0-2.5MGOe
Material Thickness of rubber magnet sheet
The popular thickness range of flexible magnet material is 0.4-1.5mm, but thicker material is available in high energy. The thicker the material the greater the pull. It is not in direct proportion, but the thicker the material the greater the pull increase. Eg:0.75mm thick material has a pull of 44 gram/cm2 and if proportional the 1.5mm thick material would be 88gram/cm2, but in fact it is actually far higher at 140 gram/cm2.