US3275496A - Method of producing non-woven fabric - Google Patents
Method of producing non-woven fabric Download PDFInfo
- Publication number
- US3275496A US3275496A US399660A US39966064A US3275496A US 3275496 A US3275496 A US 3275496A US 399660 A US399660 A US 399660A US 39966064 A US39966064 A US 39966064A US 3275496 A US3275496 A US 3275496A
- Authority
- US
- United States
- Prior art keywords
- fibers
- foam
- web
- charged
- woven fabric
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
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Classifications
-
- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
- D21H5/00—Special paper or cardboard not otherwise provided for
- D21H5/26—Special paper or cardboard manufactured by dry method; Apparatus or processes for forming webs by dry method from mainly short-fibre or particle material, e.g. paper pulp
- D21H5/2607—Pretreatment and individualisation of the fibres, formation of the mixture fibres-gas and laying the fibres on a forming surface
- D21H5/2628—Formation of a product from several constituents, e.g. blends of various types of fibres, fillers and/or binders or formation from various sources and/or streams or fibres
-
- D—TEXTILES; PAPER
- D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
- D04H—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 ; NON-WOVEN FABRICS FROM STAPLE FIBRES, FILAMENTS OR YARNS, BONDED WITH AT LEAST ONE WEB-LIKE MATERIAL DURING THEIR CONSOLIDATION
- D04H1/00—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres
- D04H1/40—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties
- D04H1/58—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties by applying, incorporating or activating chemical or thermoplastic bonding agents, e.g. adhesives
- D04H1/64—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties by applying, incorporating or activating chemical or thermoplastic bonding agents, e.g. adhesives the bonding agent being applied in wet state, e.g. chemical agents in dispersions or solutions
- D04H1/68—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties by applying, incorporating or activating chemical or thermoplastic bonding agents, e.g. adhesives the bonding agent being applied in wet state, e.g. chemical agents in dispersions or solutions the bonding agent being applied in the form of foam
-
- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21F—PAPER-MAKING MACHINES; METHODS OF PRODUCING PAPER THEREON
- D21F9/00—Complete machines for making continuous webs of paper
- D21F9/02—Complete machines for making continuous webs of paper of the Fourdrinier type
-
- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
- D21H13/00—Pulp or paper, comprising synthetic cellulose or non-cellulose fibres or web-forming material
- D21H13/10—Organic non-cellulose fibres
- D21H13/20—Organic non-cellulose fibres from macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds
- D21H13/24—Polyesters
-
- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
- D21H23/00—Processes or apparatus for adding material to the pulp or to the paper
- D21H23/02—Processes or apparatus for adding material to the pulp or to the paper characterised by the manner in which substances are added
- D21H23/04—Addition to the pulp; After-treatment of added substances in the pulp
Definitions
- the process of the present invention is similiar to the method of manufacturing fiber leather in which the quilted leather waste is mixed with a binding material emulsion and by adding precipitating material, water removal is accomplished and a bonding of the leather fibers with the dispersed bonding material is achieved.
- cationically charged fibers such .as polyester fibers or cellulose acetate fibers coated with fattyalkylpropylene di-amine acetate
- a butadiene-sty-rene dispersion foam The butadiene-styrene dispersion breaks down or flocculates, depositing the but-adiene-styrene binder material onto the fibers and enabling the water from the dispersion to be removed, all of which may be performed at high production speeds.
- cat-ionically charged'fiber can be dispersed in the binder foam before the foam is laid out in a web.
- FIG. 1 is a schematic elevational view of apparatus for practicing the method of this invention.
- FIG. 2 is a schematic illustration of a modification of the apparatus of FIG. 1.
- FIG. 1 The apparatus illustrated in FIG. 1 is similar to appara-tus which has been employed to practice this invention in the production of non-woven fabric having a weight of 27 grams/square meter and a width of 20 centimeters at a speed of 200 meters per minute,
- An emulsion mixture of latex adhesive is formed by the introduction into a vat 11 of 8 'liters of water and a foamable adhesive compound consisting of grams of polyvinylacetate as an adhesive agent, 40 grams of methyl cellulose .as a suspending, or emulsifying, agent and 40- grams of a suitable plasticizer.
- This foamable emulsion, indicated at 12 is subjected to violent agitation by means of a 'high speed impeller '13 and high pressure lair introduced through the bottom of vat 1 1 through a pipe 14.
- a multiplicity of synthetic fibers have been previously treated to render them cationically charged and are stored in a hopper 16.
- a suitable treatment may involve 800 grams of viscose rayon of. 1.2 denier having a fiber length of 60 millimeters. These fibers are rendered cationic by coating them with a cationic organic amine in the form of 32 grams fattyalkylpropylene diamine acetate.
- the fibers may additionally be treated with 40 grams of aluminum sulfate as .a coagulating, or precipitating, agent for the adhesive emulsion in the binder foam.
- Foam produced in vat 11 is fed through a slice 17 onto a moving foraminous wire 18 driven at a speed of 200 meters per minute and supported at the ends of its loop by rolls 19.
- Foam binder is deposited on wire 18 at a rate sufficient to form a foam web 20 across the wire to a depth of 1 centimeter.
- the previously treated, cationically charged fibers, indicated at 21 are fed from hopper 16 through a grinding and sieving unit 22 and into a separator 23 from which the fibers are dispersed onto the binder foam web 20.
- the cationic fibers and the coagulating agent thereon act to break down the adhesive emulsion in the foam allowing the polyvinylacetate adhesive to adhere to and bond together fibers in the foam.
- Wire 18 with the foam web 20 and fibers 21 thereon pass over a series of suction boxes 24 which effect removal of water released from the emulsion and excess foam material leaving a coherent web of bonded fibers on the wire.
- the non-woven Web thus formed may thereafter he removed from the wire by means of a felt or a :felt covered roll 26 and transferred to the surface of a large drying drum 27 which drives the remaining water from the web.
- the dry web is removed from the drying drum with the aid of a scraper, or doctor blade 28 and the finished web 29 may thereafter be rolled up on a reel (not shown).
- the process of this invention may be practiced in a modified form on the apparatus illustrated schematically in FIG. 2.
- the adhesive foam emulsion 12, prepared as stated above is introduced into a vat 31 having an impeller 13 and a compressed air pipe mass of binder foam.
- the charged fibers 21, prepared as stated above are introduced to this mass;
- the mixture of fibers 211and foamed adhesive emulsion 12 are conveyed to the moving wire '18 through a slice 32 communicating with vat 31 and having oppositely rotating cylindrical screens or sieves 33 disposed therein for breaking up and dispersing the charged fibers within the foam.
- the web 34 of fibers and binder foam deposited on wire 18 is thereafter dewatered and dried as described in con. nection with FIG. 1.
- the method of producing a non-woven fabric which comprises treating fibers to render them cationically charged, dispersing the charged fibers onto a layer of an anionically charged aqueous synthetic bonding material foam, removing water from the resulting mixture of fibers and foam and drying the bonded fibers.
- the method of producing a non-woven fabric' which comprises preparing a foam layer from an emulsion of anionically charged synthetic bonding material, deposit-' ing onto a multiplicity of synthetic fibers a cationic substance-and a coagulating agent, dispersing the fibers thus.
- said coagulating agent being effective to break the emulsion of bonding material and enable the bonding material to adhere to said fibers, with.- drawing foam and water. from said fibers and thereafter drying the bonded fibers.
- the method of producing a non-woven fabric which comprises preparing a foam layer of anionically charged synthetic bonding emulsion, introducing into said foam.
- fibers having cationic organic amine material thereon introducing to said foam a precipitating material to .break down the bonding emulsion, removing water and foam from the fibers and thereafter. drying the bonded web of fibers thus formed.
- the method of producing a non-woven fabric which comprises treating fibers to render them 'cationicafl 'ly charged, depositing onto a forarninous member a web of anionically charged aqueous synthetic bonding; material foam, dispersing the treated fibers onto the web of foam, removing water from the resulting mixture through the forarninous member and thereafter drying the resulting bonded web of fibers.
- the method of producing a non-woven fabric whic comprises preparing a foammass from an emulsion of anionically charged synthetic bonding material; depositing onto a multiplicity of synthetic fibers a cationic substance and a coagulating agent, conveying the bonding I material foam and the treated fibers to a foraminous member and spreading them in a layer thereupon, said. coagulating agent being effective to break down the bonding material emulsion when contacted therewith, remov ing water and foam through the foraminous member and thereafter drying the resulting bonded web of fibers.
- the method of producing a non-woven fabric which comprises treating fibers to :render them cationically charged, dispersing the charged fibers into-an anionically charged aqueous synthetic bonding material foam, forming said foam carrying said dispersed charged .fibersinto a layer, removing Water from the resulting mixture, of fibers and foamand drying the bonded fibers;
- the method of producing a non-woven fabric which comprises preparinga foam mass from anemulsion of anionically charged synthetic bonding material, depositing onto a multiplicity of synthetic fibers a cationic substanceand a coagulating agent, conveying the bonding material foam to a foraminous member and spreading it in a layer thereupon, dispersing the treated fibers upon said layer of foam, said coagulating agent being effective to break down the bonding material emulsion when contacted therewith, removing water and foam through the foraminous member and thereafter, drying the resulting bondedrweb DQNALL H. SYLVESTER, Primary Examiner.
Landscapes
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Dispersion Chemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Textile Engineering (AREA)
- Nonwoven Fabrics (AREA)
- Paper (AREA)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DES0087701 | 1963-10-02 |
Publications (1)
Publication Number | Publication Date |
---|---|
US3275496A true US3275496A (en) | 1966-09-27 |
Family
ID=7513976
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US399660A Expired - Lifetime US3275496A (en) | 1963-10-02 | 1964-09-28 | Method of producing non-woven fabric |
Country Status (2)
Country | Link |
---|---|
US (1) | US3275496A (de) |
DE (1) | DE1635628A1 (de) |
Cited By (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3769115A (en) * | 1967-11-15 | 1973-10-30 | Kongevej K | Method for the production of a fibrous sheet material |
WO1988005098A1 (en) * | 1987-01-12 | 1988-07-14 | Usg Interiors, Inc. | Low density frothed mineral wool panel and method |
US5013405A (en) * | 1987-01-12 | 1991-05-07 | Usg Interiors, Inc. | Method of making a low density frothed mineral wool |
EP0520798A1 (de) * | 1991-06-26 | 1992-12-30 | Peter Maurice Lock | Aufsaugende Stoffe und Verfahren zu ihrer Herstellung |
US5382609A (en) * | 1991-06-26 | 1995-01-17 | Lock; Peter M. | Absorptive fibrous sheets and processes for their manufacture |
US10639865B2 (en) | 2016-05-18 | 2020-05-05 | Awi Licensing Llc | Humidity and sag resistant building panel |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB101855A (en) * | 1916-07-27 | 1916-10-26 | Rene Clavel | Process for Sizing Paper. |
US2481959A (en) * | 1945-01-11 | 1949-09-13 | Svenska Cellulosa Ab | Method of producing a suspension of fibrous material |
US3007840A (en) * | 1958-04-03 | 1961-11-07 | Du Pont | Process of dispersing fibrous material in a foam and resulting product |
US3150215A (en) * | 1959-03-30 | 1964-09-22 | Willits Redwood Products Compa | Method of producing acoustic tile from redwood bark fibre and product obtained |
-
1963
- 1963-10-02 DE DE19631635628 patent/DE1635628A1/de active Pending
-
1964
- 1964-09-28 US US399660A patent/US3275496A/en not_active Expired - Lifetime
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB101855A (en) * | 1916-07-27 | 1916-10-26 | Rene Clavel | Process for Sizing Paper. |
US2481959A (en) * | 1945-01-11 | 1949-09-13 | Svenska Cellulosa Ab | Method of producing a suspension of fibrous material |
US3007840A (en) * | 1958-04-03 | 1961-11-07 | Du Pont | Process of dispersing fibrous material in a foam and resulting product |
US3150215A (en) * | 1959-03-30 | 1964-09-22 | Willits Redwood Products Compa | Method of producing acoustic tile from redwood bark fibre and product obtained |
Cited By (11)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3769115A (en) * | 1967-11-15 | 1973-10-30 | Kongevej K | Method for the production of a fibrous sheet material |
WO1988005098A1 (en) * | 1987-01-12 | 1988-07-14 | Usg Interiors, Inc. | Low density frothed mineral wool panel and method |
US5013405A (en) * | 1987-01-12 | 1991-05-07 | Usg Interiors, Inc. | Method of making a low density frothed mineral wool |
EP0520798A1 (de) * | 1991-06-26 | 1992-12-30 | Peter Maurice Lock | Aufsaugende Stoffe und Verfahren zu ihrer Herstellung |
US5382609A (en) * | 1991-06-26 | 1995-01-17 | Lock; Peter M. | Absorptive fibrous sheets and processes for their manufacture |
US5451467A (en) * | 1991-06-26 | 1995-09-19 | Lock; Peter M. | Laminated absorbent product |
US5591790A (en) * | 1991-06-26 | 1997-01-07 | Lock; Peter M. | Absorptive dressings |
US5596031A (en) * | 1991-06-26 | 1997-01-21 | Lock; Peter M. | Absorptive fibrous sheets and processes for their manufacture |
US5628090A (en) * | 1991-06-26 | 1997-05-13 | Lock; Peter M. | Apparatus for the production of absorbent materials |
US10639865B2 (en) | 2016-05-18 | 2020-05-05 | Awi Licensing Llc | Humidity and sag resistant building panel |
US11633935B2 (en) | 2016-05-18 | 2023-04-25 | Awi Licensing Llc | Humidity and sag resistant building panel |
Also Published As
Publication number | Publication date |
---|---|
DE1635628A1 (de) | 1969-10-02 |
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