It’s very often today one will find Rare Earth Magnets utilized in producing retail packaging. This can be generally Bushing Magnets which includes a number movable flaps. Often seen in high-end kids book collections, DVD collections, or things such as Craft type kits found packaged in paperboard. It can be considered a substitute towards the hook and loop type fasteners (i.e. Velcro) located in older style boxes.
There’s two configurations which needs to be considered.
1) Using two rare earth magnets
2) One rare earth magnet, and one section of ferrous metal
Selecting which replacement for choose is determined by a several factors:
Gap – what will function as the total distance between magnet/metal pair
Feel – how much force would you like the end user to utilize when opening
Because of the somewhat fragile nature of rare earth magnets, it’s usually recommended that during assembly from the box, that this a double edged sword (two magnets, magnet/metal) quit allowed to are available direct connection with one another. This will likely minimize any chance the magnet could break as a result of shock in the event the box is closed.
Two Magnets – This configuration is most beneficial utilized each time a stronger bond is essential, and when the information is thick, building a larger gap with shod and non-shod. Magnets may be inserted into paper board which has been die-cut, or they can also be surface mounted and laminated over (or possibly a decorative design, sticker or pad of some sort might be placed above the magnet). Alert need to be made during assembly to guarantee the polarity is at an attracting configuration. Some manufactures offer rare earth magnets which might be marked for the North seeking pole to assistance with assembly. If magnets are improperly mounted in the opposing configuration, they’ll repel and the box will not likely close. Magnets love to attract to one another within a exact manner, therefore the two magnets should mate together close for your ideal bond to take place.
Magnet & Steel – This configuration is better utilized whenever a slightly weaker bond is desired, the fabric being used seriously isn’t heavy, or when sum total could be the limiting factor. Using steel because mating piece to the magnet cuts the all inclusive costs substantially as steel is a pretty bit less than the rare earth magnets. Steel discs, washers along with similar steel bring the mating part for the rare earth magnet. Another factor that makes the magnet-steel combination attractive will be the keeping of magnet. Alignment with the steel piece just isn’t critical as being the magnet will attract well to the steel whether it’s over-sized or otherwise centered. Lastly there isn’t any concerns with polarity while using the magnet-metal configuration, because the magnet attracts for the steel equally on either the North or South seeking poles. Steel pieces are mounted inside similar ways since the magnets and box might be die-cut and the metal inserted, it can be taped in, glued in, plus it might be laminated over for the totally invisible bond.
Equally for magnet-magnet and magnet-steel configurations there’s 2 factors which use a stronger solution of the bond.
1) The diameter on the magnet. Larger diameter (larger surface areas) in the magnets will yield stronger the bonds.
2) The thickness on the magnet. Thinner magnets will not have as much holding strength as thicker magnets.
Just experiment. Try various configurations for the box construction. It could possibly work better with one larger pair, or two smaller pairs. When the bond is way too strong, lessen the magnets diameter, quantity of magnet pairs, or perhaps the thickness with the magnets or steel.
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