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US 9,851,144 B2Granted
Method and device for drying a fluid film applied to a substrate
AssigneeFMP Technology GmbH Fluid Measurements & Projects
InventorFranz Durst
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AssigneeFMP Technology GmbH Fluid Measurements & Projects
InventorFranz Durst
Estimating the term…
A method for drying a fluid film, which is applied to a surface of a substrate and includes a vaporizable liquid, includes following steps: transporting the substrate on a transport surface of a transport device along a transport direction through a drying device; vaporizing the liquid by way of a heat source having a heating surface, wherein the heating surface is disposed at a distance of 0.1 mm to 5.0 mm opposite to a surface of the substrate; and removing a vaporized liquid in a direction of the heat source.
A method for drying a fluid film, which is applied to a surface of a substrate and includes a vaporizable liquid, comprising following steps:
A device for drying a fluid film, which is applied to a surface of a substrate and includes a vaporizable liquid, comprising:
Dependencies are inferred from the claim text.
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From the US filing history. Foreign family members aren’t listed.
By conduction, i.e. the heat is conveyed from the heat source, e.g. gas flame, to the materials or objects to be dried by direct contact: the heat…
Drying solid materials or objects by processes involving the application of heat: by conduction, i.e. the heat is conveyed from the heat source,…
Machines and apparatus for drying fabrics, fibres, yarns, or other materials in long lengths, with progressive movement: arrangements for feeding,…
Drying solid materials or objects by removing liquid therefrom
About 8 years 1 month of term left · ends 25 Nov 2034 (estimated)
The present application is National Phase of International Application No. PCT/EP2012/064305 filed Jul. 20, 2012, and claims priority from German Applications No. 10 2011 080 222.3, filed Aug. 1, 2011 and No. 10 2012 210 431.3, filed Jun. 20, 2012.
The invention relates to a method and to a device for drying a fluid film that is applied to a substrate and includes a vaporizable liquid.
It is known from the prior art to coat surfaces of web-shaped goods. The web-shaped goods can be paper, plastic films, textiles or metal strips, for example. So as to coat the surface, a fluid film is applied, which includes a vaporizable liquid and non-vaporizable components. The fluid film is solidified by vaporizing the vaporizable liquid. This process is referred to as drying of the fluid layer.
The invention will be described in more detail hereafter based on the drawings: In the drawings:
FIG. 1 shows a schematic illustration to explain the variables used in the formulas;
FIG. 2 shows the interface temperature as a function of the gas temperature at a predetermined transport surface temperature;
The theoretical principles of the method according to the invention will be briefly described hereafter based on one-dimensional equations for the diffuse mass transport as a function of the temperature.
The variables used in the following equations are essentially apparent from FIG. 1.
The temperature gradient in the air gap above the interface of the fluid film fulfills the energy equation, which can be stated as follows for the gas phase: