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1. (WO2018042403) METHOD FOR PRODUCING A THREEDIMENSIONAL SPONGE BASED ON NANOFIBERS
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Pub. No.: WO/2018/042403 International Application No.: PCT/IB2017/055333
Publication Date: 08.03.2018 International Filing Date: 05.09.2017
IPC:
D04H 1/4309 (2012.01) ,A62B 23/02 (2006.01) ,B01D 39/16 (2006.01) ,B01D 46/54 (2006.01) ,D04H 1/4382 (2012.01) ,D04H 1/545 (2012.01) ,D04H 1/558 (2012.01) ,D04H 1/70 (2012.01) ,D21H 13/16 (2006.01) ,D21H 21/52 (2006.01)
D TEXTILES; PAPER
04
BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
H
MAKING TEXTILE FABRICS, e.g. FROM FIBRES OR FILAMENTARY MATERIAL; FABRICS MADE BY SUCH PROCESSES OR APPARATUS, e.g. FELTS, NON-WOVEN FABRICS; COTTON-WOOL; WADDING
1
Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres
40
from fleeces or layers composed of fibres without existing or potential cohesive properties
42
characterised by the use of certain kinds of fibres insofar as this use has no preponderant influence on the consolidation of the fleece
4282
Addition polymers
4309
Polyvinyl alcohol
A HUMAN NECESSITIES
62
LIFE-SAVING; FIRE-FIGHTING
B
DEVICES, APPARATUS OR METHODS FOR LIFE-SAVING
23
Filters for breathing-protection purposes
02
for respirators
B PERFORMING OPERATIONS; TRANSPORTING
01
PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
D
SEPARATION
39
Filtering material for liquid or gaseous fluids
14
Other self-supporting filtering material
16
of organic material, e.g. synthetic fibres
B PERFORMING OPERATIONS; TRANSPORTING
01
PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
D
SEPARATION
46
Filters or filtering processes specially modified for separating dispersed particles from gases or vapours
54
Particle separators, e.g. dust precipitators, using ultra-fine filter sheets or diaphragms
D TEXTILES; PAPER
04
BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
H
MAKING TEXTILE FABRICS, e.g. FROM FIBRES OR FILAMENTARY MATERIAL; FABRICS MADE BY SUCH PROCESSES OR APPARATUS, e.g. FELTS, NON-WOVEN FABRICS; COTTON-WOOL; WADDING
1
Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres
40
from fleeces or layers composed of fibres without existing or potential cohesive properties
42
characterised by the use of certain kinds of fibres insofar as this use has no preponderant influence on the consolidation of the fleece
4382
Stretched reticular film fibres; Composite fibres; Mixed fibres; Ultrafine fibres; Fibres for artificial leather
D TEXTILES; PAPER
04
BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
H
MAKING TEXTILE FABRICS, e.g. FROM FIBRES OR FILAMENTARY MATERIAL; FABRICS MADE BY SUCH PROCESSES OR APPARATUS, e.g. FELTS, NON-WOVEN FABRICS; COTTON-WOOL; WADDING
1
Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres
40
from fleeces or layers composed of fibres without existing or potential cohesive properties
54
by welding together the fibres, e.g. by partially melting or dissolving
542
Adhesive fibres
545
Polyvinyl alcohol
D TEXTILES; PAPER
04
BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
H
MAKING TEXTILE FABRICS, e.g. FROM FIBRES OR FILAMENTARY MATERIAL; FABRICS MADE BY SUCH PROCESSES OR APPARATUS, e.g. FELTS, NON-WOVEN FABRICS; COTTON-WOOL; WADDING
1
Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres
40
from fleeces or layers composed of fibres without existing or potential cohesive properties
54
by welding together the fibres, e.g. by partially melting or dissolving
558
in combination with mechanical or physical treatments other than embossing
D TEXTILES; PAPER
04
BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
H
MAKING TEXTILE FABRICS, e.g. FROM FIBRES OR FILAMENTARY MATERIAL; FABRICS MADE BY SUCH PROCESSES OR APPARATUS, e.g. FELTS, NON-WOVEN FABRICS; COTTON-WOOL; WADDING
1
Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres
70
characterised by the method of forming fleeces or layers, e.g. reorientation of fibres
D TEXTILES; PAPER
21
PAPER-MAKING; PRODUCTION OF CELLULOSE
H
PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C, D21D84; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G97; PAPER NOT OTHERWISE PROVIDED FOR
13
Pulp or paper, comprising synthetic cellulose or non-cellulose fibres or web-forming material
10
Organic non-cellulose fibres
12
from macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds
16
Polyalkenylalcohols; Polyalkenylethers; Polyalkenylesters
D TEXTILES; PAPER
21
PAPER-MAKING; PRODUCTION OF CELLULOSE
H
PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C, D21D84; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G97; PAPER NOT OTHERWISE PROVIDED FOR
21
Non-fibrous material added to the pulp, characterised by its function, form or properties; Paper impregnating or coating material, characterised by its function, form or properties
50
characterised by form
52
Additives of definite length or shape
Applicants:
TB-SAFETY AG [CH/CH]; Untere Grubenstrasse 3 5070 Frick, CH
Inventors:
ADLHART, Christian; CH
DEUBER, Fabian; CH
EBERT, Jürgen; CH
KEEL, Niklaus; CH
Agent:
SPIERENBURG, Pieter; CH
Priority Data:
01144/1605.09.2016CH
Title (EN) METHOD FOR PRODUCING A THREEDIMENSIONAL SPONGE BASED ON NANOFIBERS
(FR) PROCÉDÉ DE PRODUCTION D'UNE ÉPONGE TRIDIMENSIONNELLE À BASE DE NANOFIBRES
Abstract:
(EN) A new method for producing a threedimensional sponge based on nanofibers is described, which comprises the processing steps of producing nanofiber based material, suspending the nanofiber based material into a wetting non-dissolving liquid, homogenizing the suspension to obtain a slurry with separated short nano- fibers, freezing the slurry at a controlled rate and generating a solid templated threedimensional network of short nanofibers, and thermally, physically or chemically cross-linking the short nanofibers to improve the mechanical stability of the produced sponge.
(FR) L'invention concerne un nouveau procédé de production d'une éponge tridimensionnelle à base de nanofibres, qui comprend les étapes de traitement consistant à : produire un matériau à base de nanofibres, mettre en suspension le matériau à base de nanofibres dans un liquide de mouillage ne le dissolvant pas, homogénéiser la suspension pour obtenir une suspension épaisse comportant des nanofibres courtes séparées, congeler la suspension épaisse à une vitesse contrôlée et générer un réseau tridimensionnel à matrice solide de nanofibres courtes, et réticuler thermiquement, physiquement ou chimiquement les nanofibres courtes afin d'améliorer la stabilité mécanique de l'éponge produite.
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Designated States: AE, AG, AL, AM, AO, AT, AU, AZ, BA, BB, BG, BH, BN, BR, BW, BY, BZ, CA, CH, CL, CN, CO, CR, CU, CZ, DE, DJ, DK, DM, DO, DZ, EC, EE, EG, ES, FI, GB, GD, GE, GH, GM, GT, HN, HR, HU, ID, IL, IN, IR, IS, JO, JP, KE, KG, KH, KN, KP, KR, KW, KZ, LA, LC, LK, LR, LS, LU, LY, MA, MD, ME, MG, MK, MN, MW, MX, MY, MZ, NA, NG, NI, NO, NZ, OM, PA, PE, PG, PH, PL, PT, QA, RO, RS, RU, RW, SA, SC, SD, SE, SG, SK, SL, SM, ST, SV, SY, TH, TJ, TM, TN, TR, TT, TZ, UA, UG, US, UZ, VC, VN, ZA, ZM, ZW
African Regional Intellectual Property Organization (ARIPO) (BW, GH, GM, KE, LR, LS, MW, MZ, NA, RW, SD, SL, ST, SZ, TZ, UG, ZM, ZW)
Eurasian Patent Office (AM, AZ, BY, KG, KZ, RU, TJ, TM)
European Patent Office (EPO) (AL, AT, BE, BG, CH, CY, CZ, DE, DK, EE, ES, FI, FR, GB, GR, HR, HU, IE, IS, IT, LT, LU, LV, MC, MK, MT, NL, NO, PL, PT, RO, RS, SE, SI, SK, SM, TR)
African Intellectual Property Organization (BF, BJ, CF, CG, CI, CM, GA, GN, GQ, GW, KM, ML, MR, NE, SN, TD, TG)
Publication Language: English (EN)
Filing Language: English (EN)