DOUBLE-SIDEDLY COATING A POROUS WEB WITH A DOPE USING A WEB POSITIONING ELEMENT

In a first aspect, the present invention relates to a coating apparatus (41, 42) for double-sidedly coating a porous web (10) with a dope (30), comprising: (i) a slot-die coating head (50) comprising an upper lip (51), a lower lip (52) and a slot (53) between the upper lip (51) and the lower lip (52...

Ausführliche Beschreibung

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Bibliographische Detailangaben
1. Verfasser:	DOYEN, Willy
Format:	Patent
Sprache:	eng ; fre ; ger
Schlagworte:	APPARATUS FOR APPLYING LIQUIDS OR OTHER FLUENT MATERIALS TOSURFACES, IN GENERAL APPLYING LIQUIDS OR OTHER FLUENT MATERIALS TO SURFACES, IN GENERAL BASIC ELECTRIC ELEMENTS ELECTRICITY PERFORMING OPERATIONS PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSIONOF CHEMICAL INTO ELECTRICAL ENERGY SEPARATION SPRAYING OR ATOMISING IN GENERAL TRANSPORTING
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Beschreibung
Zusammenfassung:	In a first aspect, the present invention relates to a coating apparatus (41, 42) for double-sidedly coating a porous web (10) with a dope (30), comprising: (i) a slot-die coating head (50) comprising an upper lip (51), a lower lip (52) and a slot (53) between the upper lip (51) and the lower lip (52), (ii) a doctor blade (60) arranged opposite the lower lip (52) across a reference plane (15), (iii) a slit (70) defined between the lower lip (52) and the doctor blade (60) for passing a porous web (10) therebetween, the slot (53) opening up towards the slit (70), and (iv) a web positioning element (51, 61); wherein the web positioning element (51, 61) is the upper lip (51) of the slot-die coating head (50), the upper lip (51) protruding up to the reference plane (15) so that there is an offset (d) between the upper lip (51) and the lower lip (52), or a spacing structure (61) on the doctor blade (60), the spacing structure (61) protruding up to the reference plane (15) so that there is an offset (d) between the spacing structure (61) and the doctor blade (60).