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Why the Nano sponges called magic eraser
Now on the market for a couple of years, eraserlike products that get rid of stains you thought you were stuck with for good have become a common household item. For example, Mr. Clean sells a line called Magic Erasers and Scotch-Brite offers a product called the Easy Erasing Pad.
The secret behind these types of erasers is a material commonly called melamine foam. With just a little water, melamine foam can dig in and destroy stains that other products can't touch. Kids go crazy with the crayons? Co-workers leave a trail of scuffmarks wherever they walk? Erasers made with melamine foam might be just what you need.
Magic eraser sponge clean the wall
Magic Erasers, Easy Erasing Pads and similar products all have the same key ingredient: melamine foam. Melamine foam erasers are formed differently from other cleaning products and only need water to effectively clean most stains -- no chemical cleaners or soaps required. The only downfall is that melamine foam erasers wear out quickly -- just like pencil erasers do.
To all outward appearances, however, melamine foam erasers look and feel just like any other sponge. To view the crucial properties of melamine foam, you need to go down to the microscopic level. This is because when melamine resin cures into foam, its microstructure becomes very hard -- almost as hard as glass -- causing it to perform on stains a lot like super-fine sandpaper. You may be asking yourself, if this foam is almost as hard as glass, then how can it be like a sponge? Because it's a special type of open-cell foam.
How magic eraser sponge works
Closed-cell foam is easier to visualize, so let's start there. Types of closed-cell foam are usually the more rigid because they retain most of their air pockets intact, like a bunch of balls all crammed together. For open-cell foam (typically the more flexible) imagine that those balls have burst, but that some sections of their casings still remain. You can picture a squishy sea sponge as an example. In airy melamine foam, only a very limited amount of casing stays in place, and the strands that do are located where the edges of several air pockets overlapped. The foam is flexible because each tiny strand is so slender and small that bending the entire eraser is easy.
The cavity-ridden open microstructure of melamine foam is where the second major boost to its stain-removing capabilities comes in. Apart from being able to scrape at stains with extremely hard microscopic filaments, with a few quick runs of the eraser, the stain has already started to come away. That's aided by the fact that the dirt is pulled into the open spaces between the spindly skeletal strands and bound there. These two factors combined make this next-generation eraser seem almost magical.
Ready to start erasing some stains around your house? Now that we've unlocked the mystery to melamine foam erasers, check out some of the links on the next page for more interesting information.
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