| 摘要 |
<p>An insulation product includes an elongated batt (110) of fibrous insulation material, and a facing (64) adhered to a major surface of the batt. The facing is a coextruded polymer film of barrier and bonding (and preferably carrier) layers, with the bonding layer having a softening point lower than the softening point of the barrier layer. The bonding layer can include one or more of ethylene N-butyl acrylate, ethylene methyl acrylate, low density polyethylene and ethylene ethyl acrylate. When the facing has been heated to a temperature above the softening point of the bonding layer, but below the softening point of the barrier layer, the facing is adhered to the batt by the attachment of the bonding layer to the fibers in the batt due to the softening of the bonding layer. Preheating of the facing is variably controlled by adjusting an amount of contact or prewrap between a heated roller (116) and the facing. The amount of prewrap is determined by the position of a pair of satellite rollers arranged about the circumference of the heated roller.</p> |
