| 摘要 |
A product, generally in sheet form, and suitable for use as an underlay for a floor covering intended for permanent installation, comprises a layer comprising crumb-rubber material and having a first side and a second side. Scrim material is bonded to at least one of the first and second sides. A coating of a high-grab pressure sensitive adhesive is applied to at least part of the exposed surface of the scrim material. The adhesive is determined to be a high-grab adhesive if after 24 hours adhesive binding dwell-time, it has a 90° peel adhesion at 300 mm/minute, as measured by the FINAT Test Method No: 2, of between 4.35 and 21.76 Newtons/25 mm width at room temperature (23° C.±1° C.) and at a relative humidity of 50%±5%.
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