Global patent index - EP 1045937 A1

EP 1045937 A1 2000-10-25 - FOAM PROCESS WEB MANUFACTURE OF FILTER OR OTHER PAPERS FROM MECHANICAL PULP

Title (en)

FOAM PROCESS WEB MANUFACTURE OF FILTER OR OTHER PAPERS FROM MECHANICAL PULP

Title (de)

SCHAUMVERFAHREN ZUR HERSTELLUNG VON PAPIERBAHNEN FÜR FILTER ODER ÄHNLICHEM AUS MECHANISCHER PULPE

Title (fr)

FABRICATION, SELON LE PROCEDE PAR MOUSSE, DE BANDES DE PAPIER POUR FILTRES OU AUTRES A PARTIR DE PATE MECANIQUE

Publication

EP 1045937 A1 (EN)

Application

EP 98943914 A

Priority

  • FI 9800706 W
  • US 5955997 P
  • US 9845898 A

Abstract (en)

[origin: WO9915730A1] Non-woven webs of fibrous material are made by the foam process using mechanical (e.g. CTMP, CMP, TMP, or ground wood) pulp, typically at least 50 % mechanical pulp and desirably from about 60 - substantially 100 % mechanical pulp. The webs produced are preferably made into automotive filter paper, such as by impregnation with resin or latex, grooving, pleating, curing the resin or latex, etc. For example, a sheet made from the foam process may have at least 60 % mechanical pulp and at least 5 % long fibers, which may be rayon, HPZ, cotton, wool, and mixtures thereof. The filter element is typically placed in combination with an automotive oil filter casing, an automotive air filter casing, an automotive fuel filter casing, or an automotive cabin filter casing.

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

D21F 11/00

IPC 8 full level (invention and additional information)

B01D 39/18 (2006.01); D21F 11/00 (2006.01); D21H 17/00 (2006.01); D21H 27/08 (2006.01)

CPC (invention and additional information)

D21F 11/002 (2013.01)

Citation (search report)

See references of WO 9915730A1

Designated contracting state (EPC)

AT BE CH DE DK ES FI FR GB IT LI LU NL SE

EPO simple patent family

WO 9915730 A1 19990401; CN 1270648 A 20001018; EP 1045937 A1 20001025; JP 2001522946 A 20011120

INPADOC legal status

2003-05-02 [18D] DEEMED TO BE WITHDRAWN

- Ref Legal Event Code: 18D

- Effective date: 20021029

2002-07-24 [17Q] FIRST EXAMINATION REPORT

- Ref Legal Event Code: 17Q

- Effective date: 20020607

2000-10-25 [17P] REQUEST FOR EXAMINATION FILED

- Ref Legal Event Code: 17P

- Effective date: 20000405

2000-10-25 [AK] DESIGNATED CONTRACTING STATES:

- Ref Legal Event Code: AK

- Designated State(s): AT BE CH DE DK ES FI FR GB IT LI LU NL SE