Global Patent Index - EP 1019580 A1

EP 1019580 A1 2000-07-19 - METHOD FOR DRYING PAPER

Title (en)

METHOD FOR DRYING PAPER

Title (de)

VERFAHREN ZUM TROCKNEN VON PAPIER

Title (fr)

PROCEDE DE SECHAGE DU PAPIER

Publication

EP 1019580 A1 (DE)

Application

EP 98930727 A

Priority

  • DE 19721707 A
  • EP 9803069 W

Abstract (en)

[origin: DE19721707A1] The invention relates to a method for drying paper, in particular whole books. This drying method can, however, also be applied to other absorbent and, in particular, organic materials, especially layered materials. The invention seeks to create a method for drying paper, also in compact form such as whole books, in which a residual moisture content of 1 % and less is attainable in the shortest possible time and without harming the paper or books. An inventive method for drying paper, in particular as a first treatment stage in the mass deacidification of paper, is characterized in that the paper is heated by hot air and dried by being periodically subjected to negative pressure.

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

D21H 25/18; F26B 7/00

IPC 8 full level (invention and additional information)

D21H 25/18 (2006.01); F26B 5/04 (2006.01); F26B 21/10 (2006.01)

CPC (invention and additional information)

D21H 25/18 (2013.01); F26B 5/04 (2013.01); F26B 21/10 (2013.01)

Citation (search report)

See references of WO 9853143A1

Designated contracting state (EPC)

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

EPO simple patent family

DE 19721707 A1 19981126; DE 19721707 C2 19990401; AT 214763 T 20020415; EP 1019580 A1 20000719; EP 1019580 B1 20020320; US 6354019 B1 20020312; WO 9853143 A1 19981126

INPADOC legal status


2003-03-12 [26N] NO OPPOSITION FILED

- Effective date: 20021223

2003-01-15 [REG CH PL] PATENT CEASED

2002-12-27 [EN] FR: TRANSLATION NOT FILED

2002-12-03 [PG25 DE] LAPSED IN A CONTRACTING STATE ANNOUNCED VIA POSTGRANT INFORM. FROM NAT. OFFICE TO EPO

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2002-10-30 [REG IE FD4D] EUROPEAN PATENTS DESIGNATING IRELAND TREATED AS ALWAYS HAVING BEEN VOID

2002-09-25 [PG25 ES] LAPSED IN A CONTRACTING STATE ANNOUNCED VIA POSTGRANT INFORM. FROM NAT. OFFICE TO EPO

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- Effective date: 20020925

2002-09-18 [GBV] GB: EP PATENT (UK) TREATED AS ALWAYS HAVING BEEN VOID IN ACCORDANCE WITH GB SECTION 77(7)/1977

- Effective date: 20020320

2002-09-02 [NLV1] NL: LAPSED OR ANNULLED DUE TO FAILURE TO FULFILL THE REQUIREMENTS OF ART. 29P AND 29M OF THE PATENTS ACT

2002-06-20 [PG25 DK] LAPSED IN A CONTRACTING STATE ANNOUNCED VIA POSTGRANT INFORM. FROM NAT. OFFICE TO EPO

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2002-04-25 [REF] CORRESPONDS TO:

- Document: DE 59803462 20020425

2002-03-28 [REG CH EP] ENTRY IN THE NATIONAL PHASE

2002-03-20 [AK] DESIGNATED CONTRACTING STATES:

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2002-03-20 [REF] CORRESPONDS TO:

- Document: AT 214763 T 20020415

2002-01-01 [REG GB IF02] EUROPEAN PATENT IN FORCE AS OF 2002-01-01

2001-08-29 [17Q] FIRST EXAMINATION REPORT

- Effective date: 20010712

2000-07-19 [17P] REQUEST FOR EXAMINATION FILED

- Effective date: 19991222

2000-07-19 [AK] DESIGNATED CONTRACTING STATES:

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