The sizes of flexible magnetic sheet refer to the minimum and maximum sizes of the flexible magnetic sheet when it is a roll format and not when it has been pre-cut into magnetic labels. This is because magnetic labels will have been cut to different sizes out of the flexible magnetic sheet in its original roll format.
Length
The length of a flexible magnetic sheet refers to the amount of flexible magnetic sheet on a roll and can range from 150mm (5.9″) to 60m (6362″). This allows you to cut the flexible magnetic sheet to the length you need.
Width
The width is the distance between the roll’s two widest points. It ranges from 100mm (3.9″) to 1260mm (49.6″).
A flexible magnetic sheet with a larger width would be beneficial for creating large magnetic advertising signs for use in trade show booths as to hold a larger amount of information.
Depth
The depth of a flexible magnetic sheet is the distance between its two magnetic faces, or the adhesive and its magnetic face. The depth can range from 0.2mm (0.008″) to 5mm (0.2″).
The greater the depth of the flexible magnet the greater the magnetic pull of the magnet is. A flexible magnetic sheet with a depth of 5mm (0.2″) can hold 420g (14.8oz) per cm2 of flexible magnetic sheet, whereas a flexible magnetic sheet with a depth of 0.2mm can only hold 10g (0.35oz) per cm2.
If adhesive is to be added to a flexible magnetic sheet, the sheet needs to have a large magnetic pull.This is because an adhesive-backed flexible magnetic sheet requires a large magnetic pull in order to hold a non-ferromagnetic object such as a photograph, as well as its own weight, onto a ferromagnetic surface.
To summarise, when purchasing a flexible magnetic sheet, the key thing to look out for is the width and the depth.
The width of the flexible magnetic sheet is the greatest size variant, so if you need a flexible magnetic sheet with a large width, then any width over 1000mm (39.4″) would be adequate. In terms of the flexible magnetic sheet’s depth, a depth of over 2mm (0.08″) will allow the magnet to hold ferromagnetic objects as well as its own weight, for example to create fridge magnets.