EP 0943731 A1 19990922 - Filter material with adjustable wettability and process for its manufacture
Title (en)
Filter material with adjustable wettability and process for its manufacture
Title (de)
Filtermaterial mit einstellbarer Benetzbarkeit und Verfahren zu seiner Herstellung
Title (fr)
Matière filtrante avec mouillabilité réglable et son procédé de fabrication
Publication
Application
Priority
EP 98105114 A 19980320
Abstract (en)
A filter material which is impregnated with an amphiphilic substance or with a hydrophilic substance and a hydrophobic substance in order to control its wettability with water and its water absorbency. Independent claims are also included for (a) tea bags made with this filter material; (b) a process for the production of filter material in which the material is treated with substance(s) as above to control its wettability and water absorbency.
Abstract (de)
Beschrieben wird ein Filtermaterial, z.B. ein aus Naturfasern und/oder synthetischen Fasern bestehendes Papier, welches dadurch gekennzeichnet ist, daß es zur Steuerung der Wasserbenetzbarkeit und Wasseraufnahmefähigkeit mit einer amphiphilen Substanz, z.B. Carboxymethylcellulose (CMC), oder mit einer hydrophilen und einer hydrophoben Substanz, z.B. Polyethylenenglykole (PEG) und Polyethylen (PE), imprägniert ist oder diese Substanzen enthält.
IPC 1-7
IPC 8 full level
B65D 81/00 (2006.01); B65D 85/804 (2006.01); D21H 27/08 (2006.01)
CPC (source: EP)
B65D 85/804 (2013.01); D21H 27/08 (2013.01)
Citation (search report)
- [X] US 4289580 A 19810915 - ELSTON COLIN, et al
- [DX] EP 0632163 A1 19950104 - DEXTER CORP [US]
- [X] EP 0011968 A1 19800611 - UNILEVER PLC [GB], et al
- [X] GB 1307637 A 19730221 - PATERSON SONS LTD R
- [X] US 4713285 A 19871215 - KLEIN MAX [US]
- [A] US 5595659 A 19970121 - HUANG MING-TEH [US], et al
- [A] GB 1053933 A
- [A] EP 0287910 A2 19881026 - JACOBS SUCHARD GMBH [DE]
Designated contracting state (EPC)
AT BE DE ES FR GB IE IT NL SE
DOCDB simple family (publication)
EP 0943731 A1 19990922; EP 0943731 B1 20010613; AT E202171 T1 20010615; DE 59800843 D1 20010719; ES 2159903 T3 20011016
DOCDB simple family (application)
EP 98105114 A 19980320; AT 98105114 T 19980320; DE 59800843 T 19980320; ES 98105114 T 19980320