Process and apparatus for the continuous production of single-ply or multi-ply webs of heat-curable resin
AssigneeChemie Linz Aktiengesellschaft
InventorsPeter Schnell, Gustav Bihlmayer, Dietrich Daume
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Abstract
Process for the continuous production of single-ply or multi-ply laminates, comprising feeding from below and at an obtuse angle, a web uniformly coated with resin, on to a fiber web or reinforcing web which is under tension, so that the resin penetrates the fiber web or reinforcing web in a bubble-free manner, and then passing the fiber web or reinforcing web uniformly impregnated with resin, either by itself or conjointly with one or more separating films or decorative films or resin-impermeable covering films, through a heating zone and pressure zone, whereby a single-ply or multi-ply laminate is produced. Apparatus for carrying out the process is also described.
Claims6
A process for the continuous preparation of a single-ply or multi-ply reinforced web of a heat-curable resin which comprises applying a continuous resin film, by doctoring, on to a travelling web of a separating film or a film impermeable to synthetic resin, which web, in its travel, forms an obtuse angle .alpha., with its apex at the top, and runs substantially horizontally after passing the apex, the resin film being applied before the apex is reached and the web, carrying the resin film being combined, at the apex, with a pre-tensioned web, which also runs at an obtuse angle .beta. with its apex at the top, of a fiber material or absorbent foam, the angle .beta. being greater than the angle .alpha. but less than 180.degree., and having its apex, and its second viewed in the direction of travel substantially horizontal arm in common with the angle .alpha. and subsequently curing the resin-carrying web thus formed under pressure.
Dependencies are inferred from the claim text.