Curtain coating process using a high solids content...

Details Curtain coating process using a high solids content... Curtain coating process using a high solids content...

2011-07-12

2011-07-12

Ahmed, Shamim (Department: 1713)

Coating processes

Falling curtain of coating material utilized

C427S424000, C427S425000, C427S427000

Reexamination Certificate

active

07976904

ABSTRACT:
The invention relates to a curtain coating process for coating substrates with a stable curtain and a uniform coating at low flow rates wherein a free-falling curtain of an aqueous composition comprising a high solids content is coated onto the moving substrate at a flow rate per unit die length value (Q) equal to or inferior to 10−4m3/(s·m), the said high solids content composition comprising a polymeric rheology modifier and a non-ionic surfactant. The invention relates in particular to a curtain coating process for coating fibrous substrates such as paper or board. The invention also relates to a coated product.

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BASF AG, “Surfactants and polyalkylene glycols”, Jan. 2005.

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