GB1379672A - Production of fine fibre mass - Google Patents
Production of fine fibre massInfo
- Publication number
- GB1379672A GB1379672A GB2548572A GB2548572A GB1379672A GB 1379672 A GB1379672 A GB 1379672A GB 2548572 A GB2548572 A GB 2548572A GB 2548572 A GB2548572 A GB 2548572A GB 1379672 A GB1379672 A GB 1379672A
- Authority
- GB
- United Kingdom
- Prior art keywords
- water
- polymer
- mass
- molten
- pressure
- 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
Links
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
- D21H5/12—Special paper or cardboard not otherwise provided for characterised by the use of special fibrous materials
- D21H5/20—Special paper or cardboard not otherwise provided for characterised by the use of special fibrous materials of organic non-cellulosic fibres too short for spinning, with or without cellulose fibres
-
- D—TEXTILES; PAPER
- D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
- D01D—MECHANICAL METHODS OR APPARATUS IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS
- D01D5/00—Formation of filaments, threads, or the like
- D01D5/08—Melt spinning methods
-
- D—TEXTILES; PAPER
- D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
- D01D—MECHANICAL METHODS OR APPARATUS IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS
- D01D5/00—Formation of filaments, threads, or the like
- D01D5/11—Flash-spinning
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
- B29C48/03—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor characterised by the shape of the extruded material at extrusion
- B29C48/05—Filamentary, e.g. strands
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Textile Engineering (AREA)
- Artificial Filaments (AREA)
- Spinning Methods And Devices For Manufacturing Artificial Fibers (AREA)
- Paper (AREA)
- Crystals, And After-Treatments Of Crystals (AREA)
- Inorganic Fibers (AREA)
- Photoreceptors In Electrophotography (AREA)
- Extrusion Moulding Of Plastics Or The Like (AREA)
Abstract
1379672 Fine fibres OJI YUKA GOSEISHI KENKYUJO KK 31 May 1972 [1 June 1971] 25485/72 Heading B5B [Also in Division D2] A mass of fine fibres is made by a process comprising: (i) kneading a mass of a molten, water-insoluble, stable-to-water, linear thermoplastic crystalline polymer with water at a temperature above the melting point of the polymer and under a pressure at which water can exist in liquid state, thereby to produce a molten polymer mass which has water finely and uniformly dispersed therein, the quantity of water being from 2 to 50% by weight of the resulting molten polymer mass; (ii) adding supplementary water under an elevated temperature and pressure to the molten polymer mass obtained from step (i), the quantity of the water being at least 100% by weight of said molten polymer mass produced from step (i); and then, (iii) extruding the mixture of water and the molten polymer mass obtained from step (ii) into a region of lower pressure so as to evaporate the water dispersed in the molten polymer mass and the water added to the molten polymer mass whereby the molten polymer mass is cooled and subdivided into a mass of fine fibres. The linear polymer may be a polyolefin selected from homopolymers and mutual copolymers of ethylene, propylene, and butene-1, copolymers of the monomers as predominant constituents, with other monomers copolymerizable therewith, and mixtures of the polymers, particularly a mixture of a polyolefin and polystyrene. A water sorption agent, suitably a fine solid selected from nitrates, oxalates, acetates, sulphates, sulphites, carbonates, phosphates, hydroxides, and halides of alkali metals, alkaline earth metals (including magnesium) and ammonium, or a fine water-insoluble solid comprising a silicate, may also be present in the molten linear polymer. A surface active agent may be dissolved in the water dispersed in the molten linear polymer. In the apparatus of Fig. 1, the polymer is continuously melted in extruder 1, while water from reservoir 2 is heated by heat exchanger 4 and continuously pumped via pressure control valve 5 into kneader 6, suitably an extruder, where the water is dispersed in the polymer melt to form a fine dispersion of water and polymer. The dispersion is pumped at high pressure to extrusion orifice 13 by metering pump 8, the pressures in the flowpath upstream from orifice 13 and in the transfer zone being sensed by pressure gauges 17 and 18. Near the orifice, water heated in heat exchanger 11 is injected by high pressure metering pump 10 into the transfer zone, its pressure being adjusted by pressure control valve 12 so as to maintain a constant flow rate. Ejection of the polymer-water dispersion at orifice 13 into the atmosphere results in the production of a mass of uniform fine fibres of high rigidity. In the apparatus of Fig. 2 the melting of the polymer, injection of water, and kneading and dispersion of water are carried out in a single extruder. Figs. 3, 4 and 5 (not reproduced) show various types of extruder used to introduce the supplementary water; in each the water is introduced through the orifice at the side.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP46038109A JPS5116533B1 (en) | 1971-06-01 | 1971-06-01 |
Publications (1)
Publication Number | Publication Date |
---|---|
GB1379672A true GB1379672A (en) | 1975-01-08 |
Family
ID=12516292
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB2548572A Expired GB1379672A (en) | 1971-06-01 | 1972-05-31 | Production of fine fibre mass |
Country Status (11)
Country | Link |
---|---|
US (1) | US3885014A (en) |
JP (1) | JPS5116533B1 (en) |
CA (1) | CA1027322A (en) |
ES (1) | ES403712A1 (en) |
FR (1) | FR2141139A5 (en) |
GB (1) | GB1379672A (en) |
IT (1) | IT958078B (en) |
NL (1) | NL7207416A (en) |
NO (1) | NO136983C (en) |
SE (1) | SE381696B (en) |
SU (1) | SU471735A3 (en) |
Families Citing this family (22)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
BE787033A (en) * | 1971-08-06 | 1973-02-01 | Solvay | |
US4025593A (en) * | 1971-08-06 | 1977-05-24 | Solvay & Cie | Fabrication of discontinuous fibrils |
BE795841A (en) * | 1972-02-25 | 1973-08-23 | Montedison Spa | PROCESS FOR PREPARING FIBERS FROM POLYMERIC MATERIALS, SUITABLE FOR THE PREPARATION OF PAPER PULP |
US3987139A (en) * | 1972-03-20 | 1976-10-19 | Crown Zellerbach Corporation | Process of forming synthetic fibers |
GB1450892A (en) * | 1972-09-26 | 1976-09-29 | Ici Ltd | Production of fibrils |
NL7305415A (en) * | 1973-04-18 | 1974-10-22 | ||
IT1001664B (en) * | 1973-11-08 | 1976-04-30 | Sir Soc Italiana Resine Spa | MICROFIBROUS PRODUCT SUITABLE FOR ES SERE USED IN THE PRODUCTION OF SYNTHETIC CARDS AND RELATED PROCESS OF PREPARATION |
US4081226A (en) * | 1974-01-18 | 1978-03-28 | Solvay & Cie. | Process for the manufacture of short fibrils and devices for carrying it out |
LU69196A1 (en) * | 1974-01-18 | 1975-12-09 | ||
US4127623A (en) * | 1974-08-03 | 1978-11-28 | Sumitomo Chemical Company, Limited | Process for producing polyolefin short fibers |
US4211737A (en) * | 1974-11-19 | 1980-07-08 | Montedison S.P.A. | Process for producing synthetic fibers for use in paper-making |
DE2456277A1 (en) * | 1974-11-28 | 1976-08-12 | Hoechst Ag | PROCESS FOR THE PRODUCTION OF HYDROPHILIC POLYOLEFINAL FIBERS CONTAINING CLAY |
US4073850A (en) * | 1974-12-09 | 1978-02-14 | Rothmans Of Pall Mall Canada Limited | Method of producing polymeric material |
GB1556710A (en) * | 1975-09-12 | 1979-11-28 | Anic Spa | Method of occluding substances in structures and products obtained thereby |
US4192838A (en) * | 1976-10-06 | 1980-03-11 | Celanese Corporation | Process for producing filter material |
US4301105A (en) * | 1980-04-21 | 1981-11-17 | American Cyanamid Company | Process for spinning poly(polymethylene terephthalamide) fiber |
JPS6183305A (en) * | 1984-09-25 | 1986-04-26 | Mitsui Petrochem Ind Ltd | Extremely thin yarn bundle and its production |
US5650221A (en) * | 1995-07-06 | 1997-07-22 | Laroche Industries, Inc. | High strength, low pressure drop sensible and latent heat exchange wheel |
US5685897A (en) * | 1995-07-06 | 1997-11-11 | Laroche Industries, Inc. | High strength, low pressure drop adsorbent wheel |
US20050109856A1 (en) * | 2003-11-25 | 2005-05-26 | Alexander James N.Iv | Method for preparing polymer electrosprays |
US20080003435A1 (en) * | 2006-06-29 | 2008-01-03 | The Procter & Gamble Company | Faux fibers and fibrous structures employing same |
WO2010065350A1 (en) * | 2008-11-25 | 2010-06-10 | Dow Global Technologies Inc. | Extruding molecularly self-assembling organic polymers |
Family Cites Families (17)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2508462A (en) * | 1945-03-17 | 1950-05-23 | Union Carbide & Carbon Corp | Method and apparatus for the manufacture of synthetic staple fibers |
US2988782A (en) * | 1958-12-09 | 1961-06-20 | Du Pont | Process for producing fibrids by precipitation and violent agitation |
US3070835A (en) * | 1960-01-12 | 1963-01-01 | Standard Oil Co | Pump quenching of polymer solvent mixtures |
US3042970A (en) * | 1961-08-14 | 1962-07-10 | American Cyanamid Co | Particulation of polymer by extruding a solution thereof into a liquid stream of fluid |
FR1398342A (en) * | 1963-06-11 | 1965-05-07 | Asahi Chemical Ind | Improvements to processes for spraying polymers |
US3402231A (en) * | 1964-05-21 | 1968-09-17 | Monsanto Co | Process for preparing synthetic fibers for paper products |
US3627733A (en) * | 1964-06-10 | 1971-12-14 | Asahi Chemical Ind | Method for particularizing thermoplastic polyesters |
US3432483A (en) * | 1965-02-18 | 1969-03-11 | Nat Distillers Chem Corp | Continuous process for preparing finely divided polymers |
DE1544910A1 (en) * | 1965-07-24 | 1969-07-10 | Bayer Ag | Process for the separation of polymers from their solutions |
US3549732A (en) * | 1965-09-17 | 1970-12-22 | Petro Tex Chem Corp | Method for separating a polymer from a solvent |
US3306342A (en) * | 1966-03-02 | 1967-02-28 | Goodrich Gulf Chem Inc | Fluid processes useful in precipitation of dissolved solids |
US3342921A (en) * | 1966-03-16 | 1967-09-19 | West Virginia Pulp & Paper Co | Process for producing fibrous filler having high wet end retention |
US3386488A (en) * | 1966-03-18 | 1968-06-04 | Leuna Werke Veb | Process for producing powders from plastic and wax masses |
US3449291A (en) * | 1966-06-15 | 1969-06-10 | Nat Distillers Chem Corp | Colored polymer powders |
US3468986A (en) * | 1966-11-15 | 1969-09-23 | David J Watanabe | Method for producing a solid particulate material |
US3536796A (en) * | 1967-11-29 | 1970-10-27 | Grace W R & Co | Process for reducing shrinkage in preparing porous plastic sheet |
US3774387A (en) * | 1970-09-11 | 1973-11-27 | Du Pont | Hydrophilic textile products |
-
1971
- 1971-06-01 JP JP46038109A patent/JPS5116533B1/ja active Pending
-
1972
- 1972-05-25 SE SE7206859A patent/SE381696B/en unknown
- 1972-05-26 US US257419A patent/US3885014A/en not_active Expired - Lifetime
- 1972-05-26 IT IT50512/72A patent/IT958078B/en active
- 1972-05-30 CA CA143,402A patent/CA1027322A/en not_active Expired
- 1972-05-31 SU SU1790917A patent/SU471735A3/en active
- 1972-05-31 ES ES403712A patent/ES403712A1/en not_active Expired
- 1972-05-31 GB GB2548572A patent/GB1379672A/en not_active Expired
- 1972-05-31 NO NO1921/72A patent/NO136983C/en unknown
- 1972-06-01 FR FR7219714A patent/FR2141139A5/fr not_active Expired
- 1972-06-01 NL NL7207416A patent/NL7207416A/xx unknown
Also Published As
Publication number | Publication date |
---|---|
DE2225936A1 (en) | 1973-01-04 |
US3885014A (en) | 1975-05-20 |
CA1027322A (en) | 1978-03-07 |
NO136983B (en) | 1977-08-29 |
NL7207416A (en) | 1972-12-05 |
FR2141139A5 (en) | 1973-01-19 |
SE381696B (en) | 1975-12-15 |
JPS5116533B1 (en) | 1976-05-25 |
SU471735A3 (en) | 1975-05-25 |
DE2225936B2 (en) | 1976-01-08 |
ES403712A1 (en) | 1975-05-16 |
IT958078B (en) | 1973-10-20 |
NO136983C (en) | 1977-12-07 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
PS | Patent sealed [section 19, patents act 1949] | ||
PCNP | Patent ceased through non-payment of renewal fee |