GB1388881A - Polymeric pulp for paper and process of preparing polymeric pulp - Google Patents
Polymeric pulp for paper and process of preparing polymeric pulpInfo
- Publication number
- GB1388881A GB1388881A GB2592872A GB2592872A GB1388881A GB 1388881 A GB1388881 A GB 1388881A GB 2592872 A GB2592872 A GB 2592872A GB 2592872 A GB2592872 A GB 2592872A GB 1388881 A GB1388881 A GB 1388881A
- Authority
- GB
- United Kingdom
- Prior art keywords
- solvent
- vessel
- gel
- fibres
- pulp
- 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
- D21H5/202—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 polyolefins
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08F—MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
- C08F10/00—Homopolymers and copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond
-
- 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
-
- 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
- D21H13/12—Organic non-cellulose fibres from macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds
- D21H13/14—Polyalkenes, e.g. polystyrene polyethylene
Landscapes
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Engineering & Computer Science (AREA)
- Health & Medical Sciences (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Organic Chemistry (AREA)
- Mechanical Engineering (AREA)
- Textile Engineering (AREA)
- Paper (AREA)
- Artificial Filaments (AREA)
- Spinning Methods And Devices For Manufacturing Artificial Fibers (AREA)
Abstract
1388881 Preparation of pulp CROWN ZELLERBACH INTERNATIONAL INC 2 June 1972 [3 June 1971 28 Dec 1971] 25928/72 Heading D2A A synthetic polymer pulp for paper-making comprising discrete elongate rolls formed from films of thermoplastic polymer and extending in random directions from one another, is produced by a process comprising discharging a solution of thermoplastic polymer from a zone of higher pressure into a zone of lower pressure at a temperature high enough to effect flash avoporation of solvent, under conditions such that only part of the solvent is vaporised while polymer is precipitated in residual liquid solvent to form a fibrous gel and then refining the gel to disentangle the fibres. The solution of the polymer is heated in a jacketed pressure vessel 10 provided with a stirrer 11. Heating fluid passes to the jacket via conduits 12, 13, and the solvent and a polyolefin enter the vessel 10 via conduits 14, 15. An inert gas may be introduced via a conduit 16. Alternatively, the vessel 10 may be a polymerisation reactor vessel in which an olefin or mixture of olefins is polymerized, or the polymerization is carried out in another vessel and the polyolefin solution or slurry is fed to the vessel 10. From the vessel 10 the solution is fed via a heated conduit 18 and through a nozzle 22 into a precipitation conduit 23, the pressure and temperature of the solution being adiabatically reduced and a portion of the solvent vaporised during passage through the nozzle 22 to produce the fibrous gel which is passed to a vessel 26, e.g. a cyclone, in which the solvent vapour is removed for recycling. From the vessel 26 the gel passes to a refiner 28, e.g. a disc refiner or beater. The polymer concentration in the gel before refining is less than 5% by weight and the gel may be diluted with solvent to attain this concentration. Some solvent vaporization may be effected before the solution passes through the nozzle 22 to cause vapour cutting of the fibres in the gel. The nozzle 22 which is an adjustable throttling ball valve creates sufficient pressure drop to cause violent vaporization of the solvent so that the resulting turbulence also causes the fibres in the gel to break up. After the refiner 28 free solvent may be removed from the gel by filtering, decanting or centrifugation to leave a more concentrated suspension of pulp in the solvent. Paper may be made directly from this pulp but it is preferred to convert the pulp to a suspension of the fibres in water by solvent exchange, i.e. displacement of the solvent by another which can be displaced by water. Alternatively, steam stripping or freeze drying of the solvent may be effected. The fibres are treated with a water dispersing agent prior to or during steam stripping to prevent fibre agglomeration, the agent being preferably polyvinyl alcohol. The fibres formed by the elongate rolls of film have a rough skin texture. The thermoplastic polymer is preferably a crystalline olefin polymer, e.g. polyethylene or polypropylene. The solvent may be liquid or gaseous at room temperature and may be benzene, toluene, butane, pentane, hexane, heptane, octane, cyclohexane, methylene chloride, carbon tetrachloride, chloroform, ethyl chloride, methyl chloride, alcohols, esters, ethers, ketones, nitriles, amides, fluorohydrocarbons, sulphur dioxide, nitromethane or mixtures of these. In an example a handsheet was formed on a stainless steel screen, couched, cold-pressed against a polished caul on both sides and dried on a rotary drier. In a second example synthetic polymer fibres were blended with bleached alder kraft fibres and a paper formed on a small paper-making machine.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP3826071A JPS5436249B1 (en) | 1971-06-03 | 1971-06-03 | |
JP10565471A JPS5542163B2 (en) | 1971-12-28 | 1971-12-28 |
Publications (1)
Publication Number | Publication Date |
---|---|
GB1388881A true GB1388881A (en) | 1975-03-26 |
Family
ID=26377473
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB2592872A Expired GB1388881A (en) | 1971-06-03 | 1972-06-02 | Polymeric pulp for paper and process of preparing polymeric pulp |
Country Status (18)
Country | Link |
---|---|
US (1) | US3891499A (en) |
AR (1) | AR194243A1 (en) |
AT (1) | AT325413B (en) |
BE (1) | BE784363A (en) |
BR (1) | BR7203578D0 (en) |
CA (1) | CA976318A (en) |
CH (1) | CH553881A (en) |
DD (1) | DD103474A5 (en) |
DE (1) | DE2227021C3 (en) |
DK (1) | DK141735B (en) |
FR (1) | FR2141748B1 (en) |
GB (1) | GB1388881A (en) |
IT (1) | IT956104B (en) |
LU (1) | LU65454A1 (en) |
NL (1) | NL7207555A (en) |
NO (1) | NO141619C (en) |
PH (1) | PH10340A (en) |
RO (1) | RO75748A (en) |
Families Citing this family (37)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE2237606C2 (en) * | 1971-08-02 | 1982-07-08 | Crown Zellerbach International Inc., San Francisco, Calif. | Process for the preparation of aqueous dispersions of polyolefin fibers |
DE2326143B2 (en) * | 1973-05-23 | 1979-04-05 | Basf Ag, 6700 Ludwigshafen | Process for the production of short fibers from thermoplastics |
JPS5318603B2 (en) * | 1973-07-10 | 1978-06-16 | ||
US4110385A (en) * | 1973-12-21 | 1978-08-29 | Basf Aktiengesellschaft | Manufacture of fibrids of polyolefins |
US4012461A (en) * | 1975-08-06 | 1977-03-15 | Exxon Research And Engineering Company | Process for preparing polymer powders |
US3993713A (en) * | 1975-08-06 | 1976-11-23 | Exxon Research And Engineering Company | Process for preparing finely divided polymers |
US3981957A (en) * | 1975-08-06 | 1976-09-21 | Exxon Research And Engineering Company | Process for preparing finely divided polymers |
IT1054323B (en) * | 1975-11-11 | 1981-11-10 | Montedison Spa | PREPARATION PROCEDURE FOR FIBRILLE FOR PAPER FROM SOLUTIONS OR POLYPROPYLENE SPERSIONS IN N HEXANE |
GB1603830A (en) * | 1977-11-10 | 1981-12-02 | Wiggins Teape Group Ltd | Photographic support |
US4216281A (en) * | 1978-08-21 | 1980-08-05 | W. R. Grace & Co. | Battery separator |
US4265985A (en) * | 1978-08-21 | 1981-05-05 | W. R. Grace & Co. | Lead acid battery with separator having long fibers |
US4264691A (en) * | 1979-07-13 | 1981-04-28 | W. R. Grace & Co. | Battery interseparator |
IT1140357B (en) * | 1981-12-18 | 1986-09-24 | Montedison Spa | PROCEDURE FOR SURFACE MODIFICATION OF SYNTHETIC FIBERS |
EP0106118B1 (en) * | 1982-10-19 | 1986-06-11 | Austria Metall Aktiengesellschaft | Process for removing arsenic from a copper-bearing electrolyte |
DE3308626C2 (en) * | 1983-03-11 | 1986-02-20 | Dynamit Nobel Ag, 5210 Troisdorf | Process for the production of fibrids from thermoplastics |
JPS61167009A (en) * | 1985-01-16 | 1986-07-28 | Teijin Ltd | Cake of synthetic fibrid |
US4734344A (en) * | 1986-05-19 | 1988-03-29 | W. R. Grace & Co. | Battery separator |
EP0261832B1 (en) * | 1986-09-08 | 1992-07-15 | Mitsui Petrochemical Industries, Ltd. | Synthetic pulp and absorbent comprising the same |
US5000824A (en) * | 1987-05-19 | 1991-03-19 | E. I. Du Pont De Nemours And Company | Polyethylene pulp |
US6171443B1 (en) | 1990-03-05 | 2001-01-09 | Polyweave International, Llc | Recyclable polymeric synthetic paper and method for its manufacture |
US5047121A (en) * | 1990-09-20 | 1991-09-10 | E. I. Du Pont De Nemours And Company | High grade polyethylene paper |
US5851355A (en) * | 1996-11-27 | 1998-12-22 | Bba Nonwovens Simpsonville, Inc. | Reverse osmosis support substrate and method for its manufacture |
EP0997494A1 (en) * | 1998-10-27 | 2000-05-03 | Mitsui Chemicals, Inc. | Polyolefin synthetic pulp and use thereof |
US6156680A (en) * | 1998-12-23 | 2000-12-05 | Bba Nonwovens Simpsonville, Inc. | Reverse osmosis support substrate and method for its manufacture |
EP1085127A3 (en) * | 1999-09-17 | 2001-08-29 | Nisshinbo Industries, Inc. | Tray for growing plants |
US6440492B1 (en) * | 2000-05-10 | 2002-08-27 | Gencorp, Inc. | Methods of coating rubber with solventless crystalline polyolefin coatings |
JP3908084B2 (en) * | 2002-04-26 | 2007-04-25 | 株式会社半導体エネルギー研究所 | Light emitting device, electronic equipment |
US7147807B2 (en) * | 2005-01-03 | 2006-12-12 | Honeywell International Inc. | Solution spinning of UHMW poly (alpha-olefin) with recovery and recycling of volatile spinning solvent |
US7393916B2 (en) * | 2005-11-01 | 2008-07-01 | Univation Technologies, Llc | Method of reducing gels in polyolefins |
ATE489116T1 (en) * | 2006-03-16 | 2010-12-15 | Hollister Inc | HYDROCOLLOID ADHESIVE COATING WITH A NETWORK OF FIBRILLATED POLYMER FIBERS |
US20120216975A1 (en) * | 2011-02-25 | 2012-08-30 | Porous Power Technologies, Llc | Glass Mat with Synthetic Wood Pulp |
US11473245B2 (en) | 2016-08-01 | 2022-10-18 | Domtar Paper Company Llc | Surface enhanced pulp fibers at a substrate surface |
US11499269B2 (en) | 2016-10-18 | 2022-11-15 | Domtar Paper Company Llc | Method for production of filler loaded surface enhanced pulp fibers |
WO2019152969A1 (en) * | 2018-02-05 | 2019-08-08 | Pande Harshad | Paper products and pulps with surface enhanced pulp fibers and increased absorbency, and methods of making same |
WO2020198516A1 (en) | 2019-03-26 | 2020-10-01 | Domtar Paper Company, Llc | Paper products subjected to a surface treatment comprising enzyme-treated surface enhanced pulp fibers and methods of making the same |
CA3150203A1 (en) | 2019-09-23 | 2021-04-01 | Bradley Langford | Tissues and paper towels incorporating surface enhanced pulp fibers and methods of making the same |
US12116732B2 (en) | 2019-09-23 | 2024-10-15 | Domtar Paper Company, Llc | Paper products incorporating surface enhanced pulp fibers and having decoupled wet and dry strengths and methods of making the same |
Family Cites Families (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB868651A (en) * | 1957-01-23 | 1961-05-25 | Du Pont | New forms of synthetic polymers and shaped structures therefrom and processes for their production |
NL228611A (en) * | 1957-06-11 | |||
NL246230A (en) * | 1958-12-09 | |||
BE588577A (en) * | 1959-03-13 | |||
FR1224366A (en) * | 1960-08-09 | 1960-06-23 | Foundry Equipment Ltd | Improvements to feeders for foundry molding machines |
US3081519A (en) * | 1962-01-31 | 1963-03-19 | Fibrillated strand | |
US3436304A (en) * | 1965-05-19 | 1969-04-01 | Dow Chemical Co | Method for manufacturing nonwoven fibrous products from gel fibers |
NL6702029A (en) * | 1966-07-26 | 1968-01-29 |
-
1972
- 1972-05-26 PH PH13570A patent/PH10340A/en unknown
- 1972-05-30 US US257609A patent/US3891499A/en not_active Expired - Lifetime
- 1972-05-31 IT IT25199/72A patent/IT956104B/en active
- 1972-06-01 DD DD163345A patent/DD103474A5/xx unknown
- 1972-06-02 NL NL7207555A patent/NL7207555A/xx not_active Application Discontinuation
- 1972-06-02 CA CA143,790A patent/CA976318A/en not_active Expired
- 1972-06-02 DE DE2227021A patent/DE2227021C3/en not_active Expired
- 1972-06-02 BE BE784363A patent/BE784363A/en unknown
- 1972-06-02 DK DK278972AA patent/DK141735B/en not_active IP Right Cessation
- 1972-06-02 GB GB2592872A patent/GB1388881A/en not_active Expired
- 1972-06-02 BR BR3578/72A patent/BR7203578D0/en unknown
- 1972-06-02 LU LU65454D patent/LU65454A1/xx unknown
- 1972-06-02 FR FR727219912A patent/FR2141748B1/fr not_active Expired
- 1972-06-03 RO RO7271132A patent/RO75748A/en unknown
- 1972-06-05 NO NO1995/72A patent/NO141619C/en unknown
- 1972-06-05 AT AT481572A patent/AT325413B/en not_active IP Right Cessation
- 1972-06-05 AR AR242384A patent/AR194243A1/en active
- 1972-08-05 CH CH830772A patent/CH553881A/en not_active IP Right Cessation
Also Published As
Publication number | Publication date |
---|---|
DK141735C (en) | 1980-10-27 |
AR194243A1 (en) | 1973-06-29 |
IT956104B (en) | 1973-10-10 |
US3891499A (en) | 1975-06-24 |
DE2227021A1 (en) | 1973-01-04 |
CH553881A (en) | 1974-09-13 |
FR2141748B1 (en) | 1973-07-13 |
DK141735B (en) | 1980-06-02 |
BR7203578D0 (en) | 1973-05-31 |
NO141619B (en) | 1980-01-02 |
AT325413B (en) | 1975-10-27 |
CA976318A (en) | 1975-10-21 |
RO75748A (en) | 1981-02-28 |
NO141619C (en) | 1980-04-09 |
DD103474A5 (en) | 1974-01-20 |
DE2227021B2 (en) | 1980-09-25 |
LU65454A1 (en) | 1972-10-05 |
FR2141748A1 (en) | 1973-01-26 |
NL7207555A (en) | 1972-12-05 |
DE2227021C3 (en) | 1984-10-25 |
PH10340A (en) | 1976-12-09 |
BE784363A (en) | 1972-12-04 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
PS | Patent sealed [section 19, patents act 1949] | ||
PLE | Entries relating assignments, transmissions, licences in the register of patents | ||
PCNP | Patent ceased through non-payment of renewal fee |