Process for the multiple coating of moving objects or webs
AssigneeAgfa-Gevaert
InventorsGunther Koepke, Hans Frenken, Heinrich Bussmann, Kurt Browatzki
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AssigneeAgfa-Gevaert
InventorsGunther Koepke, Hans Frenken, Heinrich Bussmann, Kurt Browatzki
Estimating the term…
A process for the multiple coating of objects or webs which are continuously moving past a coating point, using coating apparatus according to the curtain coating process. This process is carried out such that any number of comparatively high viscosity layers is embedded between an accelerating layer which is positioned below the layers and has a viscosity range of from 1 to 20 mPas and a layer thickness of from 2 to 30 .mu.m, and a spreading layer which is positioned above the comparatively high viscosity layers and has a viscosity range of from 1 to 10 mPas and a layer thickness of from 5 to 20 .mu.m. By the curtain coating process, coating rates of 400 m/min and more may be achieved with a good coating quality.
A process for the multiple coating of objects or webs which are continuously moving past a coating point, using coating apparatus according to the curtain coating process, characterised in that any number of layers having a viscosity which is higher than a viscosity value of 20 mPas is embedded between a low-viscosity layer which is positioned below the layers and has a viscosity range of from 1 to 20 mPas and a layer thickness of from 2 to 30 .mu.m, and a spreading layer which is positioned above the comparatively high viscosity layers and has a viscosity range of from 1 to 10 mPas and a layer thickness of from 5 to 20 .mu.m.
A process for the multiple coating of objects or webs which are continuously moving past a coating point, using coating apparatus according to the curtain coating process, characterised in that below any number of layers having viscosity of 50 mPas or more, a layer is positioned having a viscosity range of from 1 to 20 mPas and a layer thickness of from 2 to 30 .mu.m and forming the joinder between the high viscosity layers and the objects or webs to be coated.
Dependencies are inferred from the claim text.