EP 0388072 A2 19900919 - Improved needling process.
Title (en)
Improved needling process.
Title (de)
Nadelverfahren.
Title (fr)
Procédé d'aiguilletage.
Publication
Application
Priority
GB 8905789 A 19890314
Abstract (en)
A method of strengthening and/or densifying a non-woven batt which comprises at least 5% by weight of melt or bicomponent fibres by a combination of thermal and mechanical bonding is described. Thermal and mechanical bonding are carried out in a single operation, by needling the non-woven batt in a needleloom provided with barbed or forked needles, at an elevated temperature of at least the softening temperature of the melt or bicomponent fibres. The properties of the non-woven batt which has been strengthened and/or densified by the method according to the invention can be adapted as required by varying the processing conditions.
IPC 1-7
IPC 8 full level
D04H 1/48 (2006.01); D04H 1/485 (2012.01); D04H 1/541 (2012.01); D04H 1/544 (2012.01); D04H 1/549 (2012.01); D04H 1/55 (2012.01); D04H 18/00 (2006.01)
CPC (source: EP US)
D04H 1/48 (2013.01 - EP); D04H 1/485 (2013.01 - EP US); D04H 1/5412 (2020.05 - EP US); D04H 1/5418 (2020.05 - EP US); D04H 1/544 (2013.01 - EP); D04H 1/549 (2013.01 - EP); D04H 1/55 (2013.01 - EP); D04H 18/02 (2013.01 - EP); D04H 1/5414 (2020.05 - EP US)
Designated contracting state (EPC)
AT BE CH DE FR GB IT LI
DOCDB simple family (publication)
EP 0388072 A2 19900919; EP 0388072 A3 19901031; GB 8905789 D0 19890426
DOCDB simple family (application)
EP 90302428 A 19900307; GB 8905789 A 19890314