| 摘要 |
A carpet underlayment or carpet cushion has a compressible flexible polyurethane foam base layer having formed in its upper surface a plurality of projections separated by liquid receiving channels. The channels have a dept h between 1/16 and 1/4 inch (and not more than ~ inch), and the projections preferably are formed with top surfaces having regular geometric shapes and aligned in substantially parallel staggered rows. A liquid impervious casted or blown adhesive film, such as a polyethylene film, is adhered to the upper surface of the ba se layer without substantially deforming the projections and liquid retaining channel s. When the carpet underlayment is installed under a carpet, the projections maintai n separation between the carpet and the liquid retaining channels. If a liquid is spilled on the carpet, the underlayment channels retain the spilled liquid in a defined region close to the impact zone.
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