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US 4,449,476 AGranted
Apparatus for coating or impregnating a guided substrate in the form of a web
AssigneeGebrueder Sucker
InventorsGerhard Voswinckel, Joachim Trauter
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AssigneeGebrueder Sucker
InventorsGerhard Voswinckel, Joachim Trauter
Estimating the term…
Method of coating or impregnating a guided web-shaped substrate with a flowable medium, which includes monitoring the composition of the flowable medium; continuously measuring the rate of travel of the substrate; applying a metered amount of flowable medium to the substrate at a given feeding point, corresponding to the monitored composition of the flowable medium and corresponding to the measured rate of travel of the substrate; continuously measuring the amount of flowable medium not yet accepted by the substrate; and regulating the transfer of flowable medium to the moving substrate corresponding to the measured amount of flowable medium to maintain a constant amount of flowable medium applied within pre-determined limits, and an apparatus for carrying out the method.
Apparatus for coating or impregnating a guided web-shaped substrate with a flowable medium, comprising a feeding location through which the substrate is moved and is impinged by the flowable medium, means disposed in vicinity of said feeding location for controllably transferring the flowable medium to the substrate, a metering device for the flowable medium having an outlet in communication with said feeding location and an inlet, a storage tank for the flowable medium being connected to said inlet, means operatively connected to said metering device for measuring the rate of travel of the substrate, and means operatively connected to said transferring means for regulating and constantly maintaining the amount of flowable medium at said feeding location.
Dependencies are inferred from the claim text.