Global Patent Index - EP 1209274 A3

EP 1209274 A3 2003-06-11 - Curtain coater

Title (en)

Curtain coater

Title (de)

Vorhang-Auftragsvorrichtung

Title (fr)

Enduiseuse à rideau

Publication

EP 1209274 A3 (DE)

Application

EP 01127739 A

Priority

  • DE 10057734 A
  • DE 10057732 A

Abstract (en)

[origin: EP1209274A2] The curtain coating assembly (10), to coat the surface of a moving web substrate (U) with a paste or liquid coating (18) and especially a pigment suspension, has a jet unit (14) at the applicator (12) to deliver a coating curtain (18). At least one guide (22) is in the falling path of the coating curtain, which directs the coating over the whole curtain width over at least a part of its falling path. The web curtain coating assembly has a guide in the path of the falling coating curtain, which divides it into a path section (24) between the feed and the guide, and a second path section (26) between the guide and the moving substrate. The guide can be directly at the delivery jet. The variable length of the curtain coating which covers the guide is measured in the direction of its movement. The guide forms an included angle ( alpha ) of 5-30 degrees with the direction of the curtain coating free fall line. The surface (22a) of the guide, covered by the coating medium, forms an included angle ( beta ) with the end surface (22b) of the guide of 20-60 degrees . The guide can be a guide scraper against the substrate. The guide is pitched at an angle of 20-80 degrees in the required flow direction, and preferably 45-80 degrees . The end of the guide surface towards the moving substrate can be extended at an angle of 30-50 degrees . The guide can also cover the whole flow stretch for the coating medium, between the delivery jet and the moving substrate. The surface of the guide, towards the coating medium, has a hydrophobic character, or has a hydrophobic cladding of a treated glass fiber film. At least the end surface of the guide is free of hydrophobic cladding. The coating curtain flows over the upper surface of the guide, or along its under surface. At least one electrode can be at the guide, on the side away from the flowing coating. A suction box is at the moving substrate, in front of the contact line where the coating curtain strikes it, together with a scraper at the entry and/or exit side, with a scraping edge lying on the moving substrate. The scraper at the exit side can be formed by the coating guide. The coating curtain flows over the guide surface, in a length (l) of 1-200 mm and preferably 1-50 mm. The travel speed of the substrate is 1000-3000 m/min. for a paper web and 200-1000 m/min. for a cardboard web. The coating is applied in ready doses to the substrate surface. The delivery jet has a coating delivery rate of 2-200 l/min. per meter of the web width. The length (H) of the coating curtain is 5-400 mm and preferably 40-200 mm. The guide is of metal or plastics e.g. a plastics with reinforcement carbon or glass fibers. The guide has a thickness (D) of 0.2-1.0 mm. The guide is positioned at the applicator, at an angle to the moving substrate of 70 degrees , in either direction. The guide can have a convex or concave curvature, with a curved surface at a tangent to the free fall of the coating curtain, in either direction, at an angle of up to 70 degrees .

IPC 1-7 (main, further and additional classification)

D06B 1/06; B05C 5/00

IPC 8 full level (invention and additional information)

B05C 5/00 (2006.01)

CPC (invention and additional information)

B05C 5/005 (2013.01); B05C 5/008 (2013.01)

Citation (search report)

Designated contracting state (EPC)

AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE TR

EPO simple patent family

EP 1209274 A2 20020529; EP 1209274 A3 20030611; EP 1209274 B1 20100127; AT 456695 T 20100215; DE 50115328 D1 20100318

INPADOC legal status


2013-10-31 [PG25 DE] LAPSED IN A CONTRACTING STATE ANNOUNCED VIA POSTGRANT INFORM. FROM NAT. OFFICE TO EPO

- Ref Country Code: DE

- Free text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

- Effective date: 20130601

2013-09-19 [REG DE R119] APPLICATION DEEMED WITHDRAWN, OR IP RIGHT LAPSED, DUE TO NON-PAYMENT OF RENEWAL FEE

- Document: DE 50115328

- Effective date: 20130601

2013-08-30 [PG25 FI] LAPSED IN A CONTRACTING STATE ANNOUNCED VIA POSTGRANT INFORM. FROM NAT. OFFICE TO EPO

- Ref Country Code: FI

- Free text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

- Effective date: 20121121

2013-07-31 [PG25 SE] LAPSED IN A CONTRACTING STATE ANNOUNCED VIA POSTGRANT INFORM. FROM NAT. OFFICE TO EPO

- Ref Country Code: SE

- Free text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

- Effective date: 20121122

2013-07-31 [PG25 AT] LAPSED IN A CONTRACTING STATE ANNOUNCED VIA POSTGRANT INFORM. FROM NAT. OFFICE TO EPO

- Ref Country Code: AT

- Free text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

- Effective date: 20121121

2013-07-15 [REG AT MM01] LAPSE BECAUSE OF NOT PAYING ANNUAL FEES

- Document: AT 456695 T

- Effective date: 20121121

2012-01-31 [PGFP FI] POSTGRANT: ANNUAL FEES PAID TO NATIONAL OFFICE

- Ref Country Code: FI

- Payment date: 20111114

- Year of fee payment: 11

2012-01-31 [PGFP SE] POSTGRANT: ANNUAL FEES PAID TO NATIONAL OFFICE

- Ref Country Code: SE

- Payment date: 20111128

- Year of fee payment: 11

2011-02-28 [PGFP DE] POSTGRANT: ANNUAL FEES PAID TO NATIONAL OFFICE

- Ref Country Code: DE

- Payment date: 20101119

- Year of fee payment: 10

2011-01-31 [PGFP AT] POSTGRANT: ANNUAL FEES PAID TO NATIONAL OFFICE

- Ref Country Code: AT

- Payment date: 20101112

- Year of fee payment: 10

2011-01-05 [26N] NO OPPOSITION FILED

- Effective date: 20101028

2010-05-11 [REG SE TRGR] TRANSLATION OF GRANTED EP PATENT

2010-03-18 [REF] CORRESPONDS TO:

- Document: DE 50115328 P 20100318

2010-01-27 [AK] DESIGNATED CONTRACTING STATES:

- Kind Code of Ref Document: B1

- Designated State(s): AT DE FI SE

2006-09-13 [RAP1] TRANSFER OF RIGHTS OF AN APPLICATION

- Owner name: VOITH PATENT GMBH

2004-03-03 [AKX] PAYMENT OF DESIGNATION FEES

- Designated State(s): AT DE FI SE

2004-02-04 [17Q] FIRST EXAMINATION REPORT

- Effective date: 20031222

2003-06-11 [AK] DESIGNATED CONTRACTING STATES:

- Designated State(s): AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE TR

2003-06-11 [AX] REQUEST FOR EXTENSION OF THE EUROPEAN PATENT TO:

- Countries: AL LT LV MK RO SI

2002-05-29 [17P] REQUEST FOR EXAMINATION FILED

- Effective date: 20011121

2002-05-29 [AK] DESIGNATED CONTRACTING STATES:

- Kind Code of Ref Document: A2

- Designated State(s): AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE TR

2002-05-29 [AX] REQUEST FOR EXTENSION OF THE EUROPEAN PATENT TO:

- Free text: AL;LT;LV;MK;RO;SI