Magnetic Box Closures

It is often today you are going to find Rare Earth Magnets used in producing retail packaging. This really is generally paper box construction that has more than one movable flaps. Often found in quality kids book collections, DVD collections, or things such as Craft type kits found packaged in paperboard. It truly is considered an upgraded on the hook and loop type fasteners (i.e. Velcro) within older style boxes.

There are two configurations which needs to be considered.

1) Using two rare earth magnets

2) Using one rare earth magnet, then one part of ferrous metal

Selecting which substitute for choose depends upon a several factors:

Gap – and what will are the total distance between the magnet/metal pair
Feel – the amount force are you interested in the end user to put on when opening

Because of the somewhat fragile nature of rare earth magnets, it will always be recommended that in assembly with the box, that this two parts (two magnets, magnet/metal) ‘t be capable to come in direct experience of one another. This can minimize any chance the magnet could break resulting from shock in the event the box is closed.

Two Magnets – This configuration is better utilized every time a stronger bond is essential, so when the pad is thick, creating a larger gap together. Magnets could be inserted into paper board which was die-cut, or including be surface mounted and laminated over (or maybe a decorative design, sticker or pad of some sort could be placed over the magnet). Attention have to be made during assembly to ensure the polarity was in an attracting configuration. Some manufactures offer rare earth magnets that happen to be marked for the North seeking pole to help in assembly. If magnets are improperly mounted inside an opposing configuration, they will repel plus the box will not close. Magnets love to attract to one another in a very exact manner, and so the two magnets should mate together close for your ideal bond to occur.

Magnet & Steel – This configuration is best utilized any time a slightly weaker bond is desired, the fabric being used isn’t as heavy, or when price tag may be the limiting factor. Using steel since the mating piece to the magnet cuts the all inclusive costs substantially as steel is a pretty bit less expensive the rare earth magnets. Steel discs, washers and also other similar steel can be used as the mating part on the rare earth magnet. Take into consideration that makes the magnet-steel combination attractive would be the keeping of magnet. Alignment on the steel piece isn’t as critical because the magnet will attract well for the steel whether it is over-sized or otherwise centered. Lastly there are no concerns with polarity with the magnet-metal configuration, since the magnet attracts on the steel equally on either north of manchester or South seeking poles. Steel pieces are mounted from the similar ways as the magnets and box may very well be die-cut plus the metal inserted, it can be taped in, glued in, plus it could be laminated over for that totally invisible bond.

For magnet-magnet and magnet-steel configurations there’s two factors which use a stronger solution of the bond.

1) The diameter of the magnet. Larger diameter (larger surface areas) in the magnets will yield stronger the bonds.
2) The thickness of the magnet. Thinner magnets won’t have just as much holding strength as thicker magnets.

Just experiment. Try various configurations for ones box construction. It may are better with Magnetic Assemby , or two smaller pairs. If the bond is too strong, lower the magnets diameter, number of magnet pairs, or even the thickness with the magnets or steel.

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