It is extremely often today you may find Rare Earth Magnets utilized in producing retail packaging. It is most often paper box construction containing a number of movable flaps. Often seen in high-end kids book collections, DVD collections, or items like Craft type kits found packaged in paperboard. It’s considered an alternative towards the hook and loop type fasteners (i.e. Velcro) found in older style boxes.
There’s 2 configurations which should be considered.
1) Using two rare earth magnets
2) One rare earth magnet, and something part of ferrous metal
Selecting which option to choose depends on a several factors:
Gap – what will be the total distance between your magnet/metal pair
Feel – simply how much force do you want the tip user to put on when opening
Due to somewhat fragile nature of rare earth magnets, in most cases recommended that in assembly on the box, the two parts (two magnets, magnet/metal) ‘t be allowed to are available direct contact with one another. This tends to minimize any chance the magnet could break due to shock once the box is closed.
Two Magnets – This configuration is most beneficial utilized whenever a stronger bond is essential, and when the information is thick, creating a larger gap with shod and non-shod. Magnets might be inserted into paper board that has been die-cut, or they may also be surface mounted and laminated over (or a decorative design, sticker or pad of some kind may very well be placed over the magnet). Attention have to be made during assembly to guarantee the polarity was in an attracting configuration. Some manufactures offer rare earth magnets which can be marked about the North seeking pole to help in assembly. If magnets are improperly mounted inside an opposing configuration, they may repel plus the box won’t close. Magnets love to attract together really exact manner, and so the two magnets must mate together close to the ideal bond that occurs.
Magnet & Steel – This configuration is most beneficial utilized whenever a slightly weaker bond is desired, the fabric being used isn’t as heavy, or when total cost would be the limiting factor. Using steel because mating piece for the magnet cuts the all inclusive costs substantially as steel is a pretty bit less expensive the rare earth magnets. Steel discs, washers as well as other similar steel can be used as the mating part on the rare earth magnet. Another factor that makes the magnet-steel combination attractive could be the positioning of magnet. Alignment in the steel piece seriously isn’t critical as being the magnet will attract well on the steel whether it is over-sized you aren’t centered. Lastly there isn’t any concerns with polarity with 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 the similar ways as being the magnets and box may very well be die-cut as well as the metal inserted, it may be taped in, glued in, and yes it might be laminated over for the totally invisible bond.
Both for magnet-magnet and magnet-steel configurations there are two factors which use a stronger solution with the bond.
1) The diameter with the magnet. Larger diameter (larger surface areas) on the magnets will yield stronger the bonds.
2) The thickness with the magnet. Thinner magnets won’t have as much holding strength as thicker magnets.
Just experiment. Try various configurations on your box construction. It may work better with one larger pair, or two smaller pairs. Should the bond is just too strong, slow up the magnets diameter, volume of magnet pairs, or maybe the thickness of the magnets or steel.
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