What Is Microcellular Cushion Crepe Sole?
A microcellular cushion crepe sole actually refers to two separate elements within a shoe. When combined, these elements ideally provide superior comfort for the wearer. Regardless of the comfort level, however, technologies employing microcellular materials rate as innovative.
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Microcellular Cushion
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Constructed using techniques developed at the Massachusetts Institute of Technology in the 1980s, microcellular foam has a greater cell density than cellular foam, allowing for increased durability and a higher performance-to-weight ratio. Ethylene vinyl acetate, or EVA, ranks as a common microcellular cushion in shoe construction.
Rubber Sole
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Crepe refers to a type of rubber specifically engineered for shoe soles. Manufactured as crude rubber and appearing from nearly white to brown in color, it comes in crinkled sheets.
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Construction
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Made of layered sheets of alternating materials, shoe soles come in a range of sizes and thickness. A shoe referred to as having a "microcellular cushion crepe sole" contains microcellular foam and crepe rubber.
Making Microcellular Foam
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Microcellular foam differs from cellular foam in numerous ways, including its smaller cell size and greater cell density, causing people to mistake it for plastic. Its creation employs an inorganic blower, such as nitrogen, without a nucleating agent, reducing any greenhouse gas effects.
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