HOW ARE FLEXIBLE MAGNETS MADE?
發布時間：2023-10-16 點擊量：353Flexible Magnetic Sheet
Magnetic sheets are produced using a calendaring process, and most of which tend to be 610mm wide and up to30meters in length. They can be as thin as 0.5mm, but typically tend to be 0.76mm in thickness.
Flexible magnetic sheet is magnetised on one side only with very fine stripes of north-south-north-south polarity running down the length of the sheet. The non-magnetic side is often laminated with white or brightly coloured vinyl .The sheets are very flexible and can easily be cut with a trimming knife or scissors
The sheets can be 'die cut' using a roler press and a series of sharp "knife type' cutting blades which are set into aboard and are arranged to form multiple sets of the desired shape. Using this technique, many identical simple shapes can be cut quickly with ease.
Magnetic sheets are naturally a brown colour and when laminated with vinyl, they can be printed upon using screen printing techniques.
Extruded Magnetic Profiles And Tapes
Flexible magnets can be extruded into profiles which can be coiled, typically in 10 or 30 metre rolls, and then used for applications such as shower door or refrigerator closures. The cross section of an extruded magnetic profile can have detailed protrusions that allow it to slide into a mating aluminium extrusion and remain captive with only the front magnetised edge showing.
Most flexible magnets are magnetised with stripes of magnetic poles but on one face only, the other face is not magnetic. The extruded profile can be a rectangular section to produce a magnetic strip which is often referred to as magnetic tape and this can be laminated on the non-magnetised face with hign-performance double-sided adhesive tape. Two identical strips can be magnetised with mating polarities so that when they attract each other they line up and meet exactly, one being NSNSN and the other SNSNS for example.
