It’s very often today you will find Rare Earth Magnets utilised in the creation of retail packaging. This is frequently paper box construction that has several movable flaps. Often observed in top quality kids book collections, DVD collections, or such things as Craft type kits found packaged in paperboard. It truly is considered a better on the hook and loop type fasteners (i.e. Velcro) present in older style boxes.
The two main configurations which should be considered.
1) Using two rare earth magnets
2) One rare earth magnet, and one little bit of ferrous metal
Selecting which substitute for choose will depend on a several factors:
Gap – after that become the total distance between the magnet/metal pair
Feel – how much force do you need the tip user to utilize when opening
As a result of somewhat fragile nature of rare earth magnets, it is almost always recommended that during assembly in the box, that the a double edged sword (two magnets, magnet/metal) stop able to are available direct hitting the ground with the other person. This can minimize any chance the magnet could break on account of shock if your box is closed.
Two Magnets – This configuration is the most suitable utilized each time a stronger bond is necessary, then when the content is thick, making a larger gap with shod and non-shod. Magnets might be inserted into paper board which has been die-cut, or including be surface mounted and laminated over (or perhaps a decorative design, sticker or pad of some kind might be placed within the magnet). Careful attention should be made during assembly to guarantee the polarity is at an attracting configuration. Some manufactures offer rare earth magnets that are marked about the North seeking pole to help with assembly. If magnets are improperly mounted in an opposing configuration, they may repel as well as the box won’t close. Magnets prefer to attract to one another in a very exact manner, therefore, the two magnets must mate together in close proximity for that ideal bond that occurs.
Magnet & Steel – This configuration is most beneficial utilized any time a slightly weaker bond is desired, the information used just isn’t as heavy, or when sum total is the limiting factor. Using steel as being the mating piece to your magnet cuts the total cost substantially as steel is a pretty bit less expensive than the rare earth magnets. Steel discs, washers and other similar steel can be used the mating part to your rare earth magnet. Take into consideration helping to make the magnet-steel combination attractive would be the positioning 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 Insert Magnet with polarity when using the magnet-metal configuration, since the magnet attracts for the steel equally on either its northern border or South seeking poles. Steel pieces are mounted inside similar ways since the magnets and box could possibly be die-cut along with the metal inserted, it can be taped in, glued in, and yes it may be laminated over for your totally invisible bond.
For both magnet-magnet and magnet-steel configurations the two main factors which increase the strength 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 with the magnet. Thinner magnets do not possess all the holding strength as thicker magnets.
Just experiment. Try various configurations on your box construction. It might are more effective with one larger pair, or two smaller pairs. In the event the bond is just too strong, decrease the magnets diameter, variety of magnet pairs, or the thickness of the magnets or steel.
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