DIE COATER

PROBLEM TO BE SOLVED: To provide a die coater capable of rapidly and surely detecting the uneven coating application by foreign matter, etc., sticking to the lip of a die and additionally decreasing coating defects. SOLUTION: This die coater for continuously coating a metallic web W has the die 6 pr...

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser:	HATAJIMA HITOSHI, ASANUMA MASAHARU, YOSHIKAWA TAKEFUMI
Format:	Patent
Sprache:	eng
Schlagworte:	APPARATUS FOR APPLYING LIQUIDS OR OTHER FLUENT MATERIALS TOSURFACES, IN GENERAL APPLYING LIQUIDS OR OTHER FLUENT MATERIALS TO SURFACES, IN GENERAL PERFORMING OPERATIONS SPRAYING OR ATOMISING IN GENERAL TRANSPORTING
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Beschreibung
Zusammenfassung:	PROBLEM TO BE SOLVED: To provide a die coater capable of rapidly and surely detecting the uneven coating application by foreign matter, etc., sticking to the lip of a die and additionally decreasing coating defects. SOLUTION: This die coater for continuously coating a metallic web W has the die 6 provided with the lip 64c for discharging a coating material and a backup roll 2 for supporting the metallic web and is provided with a coating film inspection apparatus 5 for detecting the uneven coating application of the metallic web W. The coating film inspection apparatus 5 has a detecting head 52 for detecting the ruggedness of the coating surface of the metallic web W and an arithmetic processing means 51 for discriminating the ruggedness of the coating surface in accordance with the signal of the detecting head 52. The detecting head 52 comprises a light emitting element for irradiating the coating surface with scanning light of an LD light source and a light receiving element for receiving the light reflected from the coating surface by a PSD.