Process for the production of a fibrous mat

Details Process for the production of a fibrous mat Process for the production of a fibrous mat

1989-05-03

1991-03-05

Theisen, Mary Lynn

Plastic and nonmetallic article shaping or treating: processes

Forming articles by uniting randomly associated particles

With subsequent cutting, grooving, breaking, or comminuting

264120, 264122, 264128, 264136, 264137, 264145, D04H 160

Patent

active

049976079

ABSTRACT:
Low density fibrous mats formed from fibres and thermosetting and thermoplastic binders, transformed by moulding at elevated temperatures are used for the production of mouldings. Such fibrous mats are produced in that a mixture of fibres and binders is spread out to form a fleece and the latter is compressed or compacted to a mat at high temperature. For the planned influencing of the characteristics of the moulding, while simultaneously reducing the binder requirement and the density, it is proposed that the fibrous mat or blanks thereof is passed through a pair of rollers with polished surfaces and by means of at least one roller binder is applied from the aqueous phase to the side of the fibrous mat facing the same under pressure action and that the fibrous mat is passed through the roller pair at a speed lower than the circumferential speed thereof and following onto the roller pair is passed through a drying zone.

REFERENCES:
patent: 2677008 (1954-04-01), Fairclough et al.
patent: 2983627 (1961-05-01), Williams
patent: 3764451 (1973-10-01), Dunning
patent: 4028457 (1977-06-01), Davey
patent: 4057669 (1977-11-01), McConnell
patent: 4294782 (1981-10-01), Frochlig
patent: 4623575 (1986-11-01), Brooks et al.

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