| 摘要 |
<p>Mineral fibers are formed into a non-woven primary fleece which hangs down and is formed into a secondary fleece(18) with fibers running parallel to the main surfaces. The fleece is compressed and gathered so that the fibers are realigned to run at a right angle to the outer surfaces(22,23) of the fleece. A cut(33) is made through the resulting material strip parallel to the outer surfaces to form two insulating material strips(2). A coating layer(39) is then applied onto the cut faces(36) of both insulating material strips. The cut is made centrally between the outer faces of the secondary fleece. Prior to applying a coating layer(39) the insulating material(2) is fed through a curing oven(30) in which the binder of the original primary fleece is cured. Coating layers are bonded, preferably with hot melt adhesive, onto the insulating material, in particular at individual points and/or along lines. Coating layers acts as external reinforcing, protective, filtering and/or decorative layers and are drawn from reels(40) and fed with insulation strip to a laminating station(38) in which they are laminated together. Adhesion between a coating layer and the insulation is effected either by activating the fleece binder with water during passage through rolls or by spraying binder onto the cut surface before applying the coating layer. Alternatively a thin, high viscosity adhesive layer may be applied onto the coating layer. Both strips of insulation may be brought into contact after application of the coating layer and fed together to a curing oven. On leaving the oven it may be hemmed in the longitudinal direction, cut into lengths and wound up or cut into sheets and packaged. An independent claim is included for an insulating material strip manufactured from mineral and/or glass wool manufactured by the claimed process.</p> |
