Process for the production of a fibrous mat

Adhesive bonding and miscellaneous chemical manufacture – Methods – Surface bonding and/or assembly therefor

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Details

156 622, 156324, 264128, 428298, B32B 1702, B27N 304

Patent

active

051064383

ABSTRACT:
A process for producing a low density fibrous mat from which a molded article may be formed by molding at elevated temperature, and which comprises a first layer of fibers, as well as thermosetting and thermoplastic binders, and at least one open covering layer of tangled fibers connected thereto is disclosed. The process including the steps of producing the first layer spreading a mixture of the fibers and the binders on to a rotating carrier web to form a continuous fleece and compressing the continuous fleece in a continuous process an elevated temperature and accompanied by the activation of part of the binders to give a transportable-resistant fibrous mat. On this fibrous mat are placed the tangled fibers forming the covering layer in the form of a continuous, open tangled fiber fleece and the latter is connected to the fibers and/or the binders of the first layer by binders having an affinity therewith. The covering layer has a higher density than the first layer.

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patent: 4784903 (1988-11-01), Kiss
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patent: 4997607 (1991-03-01), Nopper et al.

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