| 摘要 |
A seat unit is provided comprising a base structure and at least one cushion layer comprised of a random mesh of plastic filament between the base structure and the cover layer. The cushion layer not only provides adequate firmness, but has adequate air circulation therethrough. The perimeter of the cushion may be molded in with a plastic base structure, and there may be multiple cushion layers where each layer has a different density. The multiple layers of cushioning where each layer has a different density further allow the seat to have both a specifically desired firmness and air circulation therethrough. Also provided is a method for molding in the cushioning with the base structure as well as molding in a spring layer and a cover layer.
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