Method for the production of films or moulded parts composition

A reactive mixture is applied with a spray nozzle (3) to produce a layer (5) on the lower half (2) of a mold before a substrate (10) is applied and the mold closed. The application area is altered during spraying by swinging the spray with a defined amplitude, e.g. 0/5 to 300 mm, and frequency, e.g....

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Bibliographische Detailangaben
Hauptverfasser:	WIRTH, JUERGEN, KLEBA, INGO, BERGHAHN, FRANK
Format:	Patent
Sprache:	eng ; fre ; ger
Schlagworte:	AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING APPLYING LIQUIDS OR OTHER FLUENT MATERIALS TO SURFACES, IN GENERAL ATOMISING APPARATUS NOZZLES PERFORMING OPERATIONS SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDEDFOR SHAPING OR JOINING OF PLASTICS SPRAYING APPARATUS SPRAYING OR ATOMISING IN GENERAL TRANSPORTING WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL
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Beschreibung
Zusammenfassung:	A reactive mixture is applied with a spray nozzle (3) to produce a layer (5) on the lower half (2) of a mold before a substrate (10) is applied and the mold closed. The application area is altered during spraying by swinging the spray with a defined amplitude, e.g. 0/5 to 300 mm, and frequency, e.g. 20 to 200 Hz, with the distance to the surface remaining constant. The change can be gradual or along a ramp function and the spray rate is varied accordingly. An independent claim is also included for the corresponding equipment comprising a storage container (6), metering device (7), mixing head (4) and spray nozzle (3). The nozzle (3) can be oscillated by a drive according to a set program. The oscillation can involve the nozzle (3) alone or the mixing head (4) and nozzle (3) together, using an elastic connection, e.g. a ball joint or bellows.