EP 4179144 A1 20230517 - METHOD FOR PRODUCING A CELLULOSE-FIBRE-BASED DRINKING STRAW
Title (en)
METHOD FOR PRODUCING A CELLULOSE-FIBRE-BASED DRINKING STRAW
Title (de)
VERFAHREN ZUR HERSTELLUNG VON CELLULOSEFASER-BASIERTEN TRINKHALMEN
Title (fr)
PROCÉDÉ POUR PRODUIRE DES PAILLES À BASE DE FIBRES CELLULOSIQUES
Publication
Application
Priority
- AT 506042020 A 20200710
- AT 2021060240 W 20210706
Abstract (en)
[origin: WO2022006608A1] The invention relates to a method for producing cellulose-fibre-based drinking straws (1) and to a cellulose-fibre-based drinking straw (1). The method comprises the following steps: - providing a cellulose material (2), - producing at least one aqueous suspension (3) comprising the cellulose material (2) and optionally adding additives (4) to the suspension (3), - homogenising the at least one aqueous suspension (3) and pre-drying to form at least one water-containing non-woven web (5) having a first side (6) and a second side (7), - drying the at least one water-containing non-woven web (5) in a plurality of drying steps to form at least one paper web (8) having a first side (6) and a second side (7), - further processing the at least one paper web (8) or a plurality of the paper webs (8) to form a cellulose-fibre-based drinking straw (1). According to the invention, at least the first side (6) of the at least one non-woven web (5) is compressed with a line load of 80 kN/m to 500 kN/m before, during or after one of the drying steps and before being further processed to form a cellulose-fibre-based drinking straw (1).
IPC 8 full level
D21H 27/00 (2006.01); A47G 21/18 (2006.01); D21G 1/00 (2006.01)
CPC (source: AT EP US)
A47G 21/18 (2013.01 - AT EP US); D21F 3/0218 (2013.01 - US); D21F 5/022 (2013.01 - US); D21G 1/00 (2013.01 - EP US); D21H 11/04 (2013.01 - AT); D21H 11/20 (2013.01 - US); D21H 17/15 (2013.01 - US); D21H 17/17 (2013.01 - US); D21H 21/16 (2013.01 - AT US); D21H 23/04 (2013.01 - US); D21H 27/00 (2013.01 - EP); D21H 27/32 (2013.01 - US)
Citation (search report)
See references of WO 2022006608A1
Designated contracting state (EPC)
AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR
Designated extension state (EPC)
BA ME
Designated validation state (EPC)
KH MA MD TN
DOCDB simple family (publication)
WO 2022006608 A1 20220113; AT 523915 A4 20220115; AT 523915 B1 20220115; CN 115867706 A 20230328; EP 4179144 A1 20230517; US 2024018724 A1 20240118
DOCDB simple family (application)
AT 2021060240 W 20210706; AT 506042020 A 20200710; CN 202180045748 A 20210706; EP 21754888 A 20210706; US 202118004887 A 20210706