US2600504A - Forming paper from modified calcium alginate fibers - Google Patents
Forming paper from modified calcium alginate fibers Download PDFInfo
- Publication number
- US2600504A US2600504A US31226A US3122648A US2600504A US 2600504 A US2600504 A US 2600504A US 31226 A US31226 A US 31226A US 3122648 A US3122648 A US 3122648A US 2600504 A US2600504 A US 2600504A
- Authority
- US
- United States
- Prior art keywords
- fibres
- paper
- alginate
- calcium alginate
- insoluble
- 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
Links
- OKHHGHGGPDJQHR-YMOPUZKJSA-L calcium;(2s,3s,4s,5s,6r)-6-[(2r,3s,4r,5s,6r)-2-carboxy-6-[(2r,3s,4r,5s,6r)-2-carboxylato-4,5,6-trihydroxyoxan-3-yl]oxy-4,5-dihydroxyoxan-3-yl]oxy-3,4,5-trihydroxyoxane-2-carboxylate Chemical class [Ca+2].O[C@@H]1[C@H](O)[C@H](O)O[C@@H](C([O-])=O)[C@H]1O[C@H]1[C@@H](O)[C@@H](O)[C@H](O[C@H]2[C@H]([C@@H](O)[C@H](O)[C@H](O2)C([O-])=O)O)[C@H](C(O)=O)O1 OKHHGHGGPDJQHR-YMOPUZKJSA-L 0.000 title description 11
- 239000000835 fiber Substances 0.000 title description 9
- 235000010443 alginic acid Nutrition 0.000 claims description 13
- 229920000615 alginic acid Polymers 0.000 claims description 13
- 229940072056 alginate Drugs 0.000 claims description 12
- FHVDTGUDJYJELY-UHFFFAOYSA-N 6-{[2-carboxy-4,5-dihydroxy-6-(phosphanyloxy)oxan-3-yl]oxy}-4,5-dihydroxy-3-phosphanyloxane-2-carboxylic acid Chemical compound O1C(C(O)=O)C(P)C(O)C(O)C1OC1C(C(O)=O)OC(OP)C(O)C1O FHVDTGUDJYJELY-UHFFFAOYSA-N 0.000 claims description 11
- 238000000034 method Methods 0.000 claims description 11
- 150000003839 salts Chemical class 0.000 claims description 3
- 150000001447 alkali salts Chemical class 0.000 claims description 2
- 150000001450 anions Chemical class 0.000 claims description 2
- CDBYLPFSWZWCQE-UHFFFAOYSA-L Sodium Carbonate Chemical compound [Na+].[Na+].[O-]C([O-])=O CDBYLPFSWZWCQE-UHFFFAOYSA-L 0.000 description 14
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 12
- 239000000648 calcium alginate Substances 0.000 description 11
- 235000010410 calcium alginate Nutrition 0.000 description 11
- 229960002681 calcium alginate Drugs 0.000 description 11
- 230000008961 swelling Effects 0.000 description 8
- 239000003795 chemical substances by application Substances 0.000 description 7
- 229910000029 sodium carbonate Inorganic materials 0.000 description 7
- 238000009950 felting Methods 0.000 description 4
- 239000000725 suspension Substances 0.000 description 4
- 239000003513 alkali Substances 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- IXPNQXFRVYWDDI-UHFFFAOYSA-N 1-methyl-2,4-dioxo-1,3-diazinane-5-carboximidamide Chemical compound CN1CC(C(N)=N)C(=O)NC1=O IXPNQXFRVYWDDI-UHFFFAOYSA-N 0.000 description 2
- OYPRJOBELJOOCE-UHFFFAOYSA-N Calcium Chemical compound [Ca] OYPRJOBELJOOCE-UHFFFAOYSA-N 0.000 description 2
- DGAQECJNVWCQMB-PUAWFVPOSA-M Ilexoside XXIX Chemical compound C[C@@H]1CC[C@@]2(CC[C@@]3(C(=CC[C@H]4[C@]3(CC[C@@H]5[C@@]4(CC[C@@H](C5(C)C)OS(=O)(=O)[O-])C)C)[C@@H]2[C@]1(C)O)C)C(=O)O[C@H]6[C@@H]([C@H]([C@@H]([C@H](O6)CO)O)O)O.[Na+] DGAQECJNVWCQMB-PUAWFVPOSA-M 0.000 description 2
- 238000010009 beating Methods 0.000 description 2
- 229910052791 calcium Inorganic materials 0.000 description 2
- 239000011575 calcium Substances 0.000 description 2
- 229910052708 sodium Inorganic materials 0.000 description 2
- 239000011734 sodium Substances 0.000 description 2
- 239000000661 sodium alginate Substances 0.000 description 2
- 235000010413 sodium alginate Nutrition 0.000 description 2
- 229940005550 sodium alginate Drugs 0.000 description 2
- 244000198134 Agave sisalana Species 0.000 description 1
- QGZKDVFQNNGYKY-UHFFFAOYSA-O Ammonium Chemical compound [NH4+] QGZKDVFQNNGYKY-UHFFFAOYSA-O 0.000 description 1
- 239000004254 Ammonium phosphate Substances 0.000 description 1
- BVKZGUZCCUSVTD-UHFFFAOYSA-L Carbonate Chemical compound [O-]C([O-])=O BVKZGUZCCUSVTD-UHFFFAOYSA-L 0.000 description 1
- 229920003043 Cellulose fiber Polymers 0.000 description 1
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- FYYHWMGAXLPEAU-UHFFFAOYSA-N Magnesium Chemical compound [Mg] FYYHWMGAXLPEAU-UHFFFAOYSA-N 0.000 description 1
- 244000000231 Sesamum indicum Species 0.000 description 1
- 235000003434 Sesamum indicum Nutrition 0.000 description 1
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 1
- CPGKMLVTFNUAHL-UHFFFAOYSA-N [Ca].[Ca] Chemical compound [Ca].[Ca] CPGKMLVTFNUAHL-UHFFFAOYSA-N 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- 150000007513 acids Chemical class 0.000 description 1
- 230000001464 adherent effect Effects 0.000 description 1
- 229910052783 alkali metal Inorganic materials 0.000 description 1
- 150000001340 alkali metals Chemical class 0.000 description 1
- 229910000148 ammonium phosphate Inorganic materials 0.000 description 1
- 235000019289 ammonium phosphates Nutrition 0.000 description 1
- 159000000007 calcium salts Chemical class 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 230000001427 coherent effect Effects 0.000 description 1
- 239000000084 colloidal system Substances 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- MNNHAPBLZZVQHP-UHFFFAOYSA-N diammonium hydrogen phosphate Chemical compound [NH4+].[NH4+].OP([O-])([O-])=O MNNHAPBLZZVQHP-UHFFFAOYSA-N 0.000 description 1
- 150000002500 ions Chemical class 0.000 description 1
- 229910052749 magnesium Inorganic materials 0.000 description 1
- 239000011777 magnesium Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000009877 rendering Methods 0.000 description 1
- 238000009987 spinning Methods 0.000 description 1
- 239000007858 starting material Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 239000008399 tap water Substances 0.000 description 1
- 235000020679 tap water Nutrition 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
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
- D21H13/00—Pulp or paper, comprising synthetic cellulose or non-cellulose fibres or web-forming material
- D21H13/10—Organic non-cellulose fibres
- D21H13/28—Organic non-cellulose fibres from natural polymers
- D21H13/30—Non-cellulose polysaccharides
- D21H13/32—Alginate fibres
-
- 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
- D21H5/1227—Special paper or cardboard not otherwise provided for characterised by the use of special fibrous materials of polysaccharide fibres other than cellulosic, e.g. alginate fibres
Definitions
- Conseq iitly Paper is ordinarily manufactured from the paper made from fibres of calcium alg'iriate' is various forms of fibrous cellulosic'materials such non infiammable' and if treated with alkalis aswoo'd'pulp; rags, sisal fibres and'the like; The 5 stronger than that used as'a s' 'e'llin'g agen for fibres are beaten in water to form a pulp" and making the papen it caneasily' be wholly the beating givesthem' a" quality Of adhesion S0 solved" therein.
- The" invention is: not H r that when the pulp containingthem is'drained limited to the employment of eare iu'm' a1 hate on a porous surface the fibres felt togetheiand as-fibr'es of manyetheraninates such' as pte'r becomea coherent sheet; For' emepu rpose's it a lginate';ziiidalginate, chrqmii broadlyal'giiiatab ""3 1 would be advantageous to have soluble" papers. 1mm; a ternate and mahyethers which-are water'- Cellulose fibres are not soluble in water'o'r' weak insoluble" have been: spun.
- Fibres of calcium alginate are soluble in weak In the absence of an alkali or other swelling alkalis such as a 1% solution of sodium car agent there is no adhesion between the fibres Of bonate. We have found however that if asodium the p p and f tOO reat a concentration of carbonate solution is made sufiiciently weak it alkall is employed, the fibres become too weak can be used as a swelling agent to swell the outer and swollen E be handled O IVeniently.
- Calcium Calcium alginate fibres consisting of waste alginate is also non-inflammable-that is, it does from the production of alginate staple fibres 1'01' use in spinning yarns, were taken, chopped up fine and dispersed with tap water to form a pulp so as to produce a suspension containing 3 grams of calcium alginate fibre in each 300 millilitres of water.
- the water employed had a hardness of 32", that is to say it corresponded to the presence of 32 parts of CaCOs per 100,000 of water.
- 0.2 gram of sodium carbonate was added for each 300 millilitres of the above-described algihate-containing pulp, and the pulp was kept stirred at a temperature of ISO-70 F. for 30 minutes.
- the quantity of sodium carbonatestated is sufiicient to convert from to of the calcium alginate to sodium alginate.
- Sufiicient 01 this suspension was made up to fill a shallow vat, and a sieve covered with a piece of No.
- calcium alginate fibre is a preferred starting material for the production of these alginate papers
- other fibres made from alkali-soluble, but water-insoluble alginates may equally well be used.
- sodium carbonate was used as the swelling agent.
- any of the water-soluble salts of the alkali metals, or ammonium, or magnesium which yield insoluble calcium salts may be used.
- a swelling agent for any water infibres, reducing them to the form of a shortfibre aqueous pulp, introducing a soluble alkali salt of an anion which will form an insoluble salt with the alkaline earth in the insoluble alginate fibres, in suificient quantity to combine with from 15% to of the alkaline earth, thus causing the fibres to swell, and then causing the fibres to felt together to make paper.
- a process of making paper which consists in taking water-insoluble alkaline-earth alginate fibres, reducing them to the form of a short-fibre aqueous pulp, introducing sodium carbonate in sufficient quantity to combine with from 15% to 55% of the alkaline earth in the alginate and thus causing the alginic fibres to swell, and then felting the fibres together to form paper.
- a process of making paper which consists in taking calcium alginate fibres, reducing them to the form of a short-fibre aqueous pulp, introducing sodium carbonate in sufiicient quantity to combine with from 15% to 55% of the calcium in the alginate and thus causing the alginic fibres to swell, and then felting the fibres together to form paper.
Landscapes
- Paper (AREA)
Description
Patented June 17,. 1952 UNITED- STA-T Es PM EINT critics 2,600,504" FORMING PAPER FROMMODIEFIEB GALGIUM- ALGINATE FIBERS rthii'rJii nsoii, needs, amiss (jieer'g'e vii'llatt;
I I t ammates; Lenaomsmena, a r tis company b Drawin enn iea Jun a nstsethi ut 31 2 26. In Great Britain June-13 1947 1 2 This invention comprises-improvements1hor netiburh with a flame or pro agate ombustion, relating to" themanufacture'of paper. although it may char under heat. Conseq iitly Paper is ordinarily manufactured from the paper made from fibres of calcium alg'iriate' is various forms of fibrous cellulosic'materials such non infiammable' and if treated with alkalis aswoo'd'pulp; rags, sisal fibres and'the like; The 5 stronger than that used as'a s' 'e'llin'g agen for fibres are beaten in water to form a pulp" and making the papen it caneasily' be wholly the beating givesthem' a" quality Of adhesion S0 solved" therein. The" invention is: not H r that when the pulp containingthem is'drained limited to the employment of eare iu'm' a1 hate on a porous surface the fibres felt togetheiand as-fibr'es of manyetheraninates such' as pte'r becomea coherent sheet; For' emepu rpose's it a lginate';ziiidalginate, chrqmiiiriial'giiiatab ""3 1 would be advantageous to have soluble" papers. 1mm; a ternate and mahyethers which-are water'- Cellulose fibres are not soluble in water'o'r' weak insoluble" have been: spun. A" suitableageiitjifer acids or alkalisi Papers are made which are any particular alginicfibr, will be t e which called soluble but thisorilymeans that they tendst'd dissolve theffibre biit is" ein'ployed-"in a become so soitin water as to be readily disintestrengthsufficient only; within the time of -trea'tgrated and terevertto the state of pulp Paper merit-employed, toao'tsuperficially'thereoni'so'as moreover-is readily inflammable and for'many to swell the outer layers. Agents suitable for purposes a non-infiammablepaper would be of trial for this purpose c'aii'be' selectedaccord-ing great advantage. to'the known chemical properties oi the algi- It is an object of the present invention to pronates'. For example; copper alginate isfrsp'o'nvidep'a'per which aiiords thadvantages of semsiv' to ammonium phosphate; c romium algibilityor oiresistance' to fir'e or' both. nateis'resistant to alkalisl' Not all alg'iir'iatesare Accordingtto' the presenrin vention a process non-inflammable, and if an inflammable algi'nate of production ofpap'enconsists'in'taking"wateris employed of coursethe resultingpaper will insoluble alginic' fibres, comminu'ting them and 2 partake ofthis property. The'a'ctu'al strength making them into a pulp. in water, rendering Of the swelling age'nt in'ani particularcase will them'adherent so as to" be capable of felting toep l 'poii ajnumberef factors including the gether' into acoherentsheetby the introduction e era r 'f m (if treatment" and; the into the pulp of'a swelling agent which causes ha fi s' 0f Watr? 1 7; An example of the alginic fibrestoswell and become sticky in u c s a fi and lirri s. f t as water, and thenmakingpaper from thepulp so j n f ii U I Qth r- 0 d1- prparei tions a simple preliminarytrialwill sumce to dew t q mm algjnic flBj-eg d fiofi' b ecgme termine the best strength to obtain the'desired sesame of felting when beaten lI 1- Watr.-' That sul g is'to say, although a mat of such fibres may be T1 fi tl g' fibi' 'es may be produced irom produced on a screen, it will not holdtogether J Wn aI mw s'o staple fi -cu tins or when drained and dried because there is no tend- Otherwiseency for one fibre to adhere to another. There y yin the concentration of alkali or oth therefore is a fundamental distinction between Swellmg f b it is possible to control the the process according to the present invention 40 amount fb 1ndmg ion which takes place and the ordinary procedure of paper making, in between i fibres, and thus to y h that the fibres must be brought into a feltable characterlstws of the resultant paper. The condition, not by beating but by the addition to quahty 0f e paper may a so be V d y a terthe pulp of a swelling agent-h ing the length of the alginate fibres employed. Fibres of calcium alginate are soluble in weak In the absence of an alkali or other swelling alkalis such as a 1% solution of sodium car agent there is no adhesion between the fibres Of bonate. We have found however that if asodium the p p and f tOO reat a concentration of carbonate solution is made sufiiciently weak it alkall is employed, the fibres become too weak can be used as a swelling agent to swell the outer and swollen E be handled O IVeniently.
surface of calcium alginate fibres without dis- The followmg example lustrates one applicasolving the fibres, and that this combination of tion of the process: calcium alginate with sodium carbonate used as E Z a swelling agent is particularly advantageous for mm? 9 the purpose of the present invention. Calcium Calcium alginate fibres, consisting of waste alginate is also non-inflammable-that is, it does from the production of alginate staple fibres 1'01' use in spinning yarns, were taken, chopped up fine and dispersed with tap water to form a pulp so as to produce a suspension containing 3 grams of calcium alginate fibre in each 300 millilitres of water. The water employed had a hardness of 32", that is to say it corresponded to the presence of 32 parts of CaCOs per 100,000 of water. 0.2 gram of sodium carbonate was added for each 300 millilitres of the above-described algihate-containing pulp, and the pulp was kept stirred at a temperature of ISO-70 F. for 30 minutes. The quantity of sodium carbonatestated is sufiicient to convert from to of the calcium alginate to sodium alginate. Sufiicient 01 this suspension was made up to fill a shallow vat, and a sieve covered with a piece of No. 1 filter paper was immersed in the suspension so as to be filled with the pulp, removed with shaking in the usual way to cause the fibres to mat together, drained and the resulting filtered paper was transferred to a wire gauge drainer and dried thereon, and then hot-pressed to produce a strong hand-made paper sheet.
In carrying out the process by steps similar to those described in the foregoing example it has been found that 0.4 gram of sodium carbonate represents approximately the upper limit of alkali concentration for a fibre suspension consisting of 3 grams of calcium alginate fibres in 300 millilitres of water. When 0.50 gram were added the fibre became too swollen to handle and was discarded. 0.40 gram gave a parchmentlike paper and smaller quantities softer and weaker papers. It is to be expected that with harder water slightly more sodium carbonate would be required. This quantity corresponds to the conversion of 50% to 55% of the calcium alginate to sodium alginate.
It should be noted that although calcium alginate fibre is a preferred starting material for the production of these alginate papers, other fibres made from alkali-soluble, but water-insoluble alginates may equally well be used. In the example described above, sodium carbonate was used as the swelling agent. In place of this compound when using calcium alginate fibres any of the water-soluble salts of the alkali metals, or ammonium, or magnesium which yield insoluble calcium salts may be used. All that is required of a swelling agent for any water infibres, reducing them to the form of a shortfibre aqueous pulp, introducing a soluble alkali salt of an anion which will form an insoluble salt with the alkaline earth in the insoluble alginate fibres, in suificient quantity to combine with from 15% to of the alkaline earth, thus causing the fibres to swell, and then causing the fibres to felt together to make paper.
2. A process of making paper which consists in taking water-insoluble alkaline-earth alginate fibres, reducing them to the form of a short-fibre aqueous pulp, introducing sodium carbonate in sufficient quantity to combine with from 15% to 55% of the alkaline earth in the alginate and thus causing the alginic fibres to swell, and then felting the fibres together to form paper.
3. A process of making paper which consists in taking calcium alginate fibres, reducing them to the form of a short-fibre aqueous pulp, introducing sodium carbonate in sufiicient quantity to combine with from 15% to 55% of the calcium in the alginate and thus causing the alginic fibres to swell, and then felting the fibres together to form paper.
4. A process as claimed in claim 1, wherein the paper after being felted and drained is hot pressed.
5. A process as claimed in claim 2, wherein the paper after being felted and drained is hot pressed.
6. A process as claimed in claim 3, wherein the paper after being felted and drained is hot pressed.
ARTHUR JOHNSON. EDWIN GEORGE MILLATT.
REFERENCES CITED The following references are of record in the file of this patent:
UNITED STATES PATENTS Number Name Date 737,421 Krefting Aug. 25, 1908 1,509,035 Thornley Sept. 16, 1924 1,675,244 Blombery June 26, 1928 FOREIGN PATENTS Number Country Date 316,119 Great Britain July 23, 1929 492,264 Great Britain Sept. 13, 1938 OTHER REFERENCES Journal of the Society of Dyers and Colorists, vol. 62, page 100, (1946).
Colloid Chemistry by Alexander, vol. VI, pages 718-722 (1946), published by Reinhold Publishing Corp, New York.
Claims (1)
1. A PROCESS OF MAKING PAPER WHICH CONSISTS IN TAKING WATER-INSOLUBLE ALKALINE-EARTH ALGINATE FIBRES, REDUCING THEM TO THE FORM OF A SHORTFIBRE AQUEOUS PULP, INTRODUCING A SOLUBLE ALKALI SALT OF AN ANION WHICH WILL FORM AN INSOLUBLE SALT WITH THE ALKALINE EARTH IN THE INSOLUBLE ALGINATE FIBRES, IN SUFFICIENT QUANTITY TO COMBINE WITH FROM 15% TO 55% OF THE ALKALINE EARTH, THUS CAUSING THE FIBRES TO SWELL, AND THEN CAUSING THE FIBRES TO FELT TOGETHER TO MAKE PAPER.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB2600504X | 1947-06-19 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| US2600504A true US2600504A (en) | 1952-06-17 |
Family
ID=10911263
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| US31226A Expired - Lifetime US2600504A (en) | 1947-06-19 | 1948-06-04 | Forming paper from modified calcium alginate fibers |
Country Status (1)
| Country | Link |
|---|---|
| US (1) | US2600504A (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2811442A (en) * | 1954-04-12 | 1957-10-29 | Paper Chemistry Inst | Sheets comprising filaments of fungi |
| US2869973A (en) * | 1954-08-25 | 1959-01-20 | Du Pont | Synthetic paper sheet of chemically bonded synthetic polymer fibers and process of making the same |
| US4104115A (en) * | 1973-11-29 | 1978-08-01 | Carreras Rothmans, Limited | Method of making paper from water insoluble alginate fibers and the paper produced |
| US4421583A (en) * | 1979-04-18 | 1983-12-20 | Courtaulds Limited | Man-made filaments and method of making wound dressings containing them |
| JPS61289886A (en) * | 1985-06-19 | 1986-12-19 | Agency Of Ind Science & Technol | Production of fiber of alginic acid containing active protein and paper made of said fiber |
| US9090868B2 (en) | 2010-07-12 | 2015-07-28 | President And Fellows Of Harvard College | Alginate hydrogel fibers and related materials |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US737421A (en) * | 1902-05-19 | 1903-08-25 | Ernest Herrmann | Process of extracting glutinous substances from seaweed. |
| US1509035A (en) * | 1922-08-19 | 1924-09-16 | Thornley | Process for the utilization of seaweed |
| US1675244A (en) * | 1924-11-05 | 1928-06-26 | Blombery George Frederick | Manufacture of paper, paperboard, building boards, roofing and flooring sheets and cloths, and the like |
| GB316119A (en) * | 1928-04-23 | 1929-07-23 | Otto Reynard | Improved process of obtaining from seaweed a stable form of alginic acid and its compounds |
| GB492264A (en) * | 1937-03-13 | 1938-09-13 | Cyril Wilfred Bonniksen | Improvements in or relating to the production of films of alginic material |
-
1948
- 1948-06-04 US US31226A patent/US2600504A/en not_active Expired - Lifetime
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US737421A (en) * | 1902-05-19 | 1903-08-25 | Ernest Herrmann | Process of extracting glutinous substances from seaweed. |
| US1509035A (en) * | 1922-08-19 | 1924-09-16 | Thornley | Process for the utilization of seaweed |
| US1675244A (en) * | 1924-11-05 | 1928-06-26 | Blombery George Frederick | Manufacture of paper, paperboard, building boards, roofing and flooring sheets and cloths, and the like |
| GB316119A (en) * | 1928-04-23 | 1929-07-23 | Otto Reynard | Improved process of obtaining from seaweed a stable form of alginic acid and its compounds |
| GB492264A (en) * | 1937-03-13 | 1938-09-13 | Cyril Wilfred Bonniksen | Improvements in or relating to the production of films of alginic material |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2811442A (en) * | 1954-04-12 | 1957-10-29 | Paper Chemistry Inst | Sheets comprising filaments of fungi |
| US2869973A (en) * | 1954-08-25 | 1959-01-20 | Du Pont | Synthetic paper sheet of chemically bonded synthetic polymer fibers and process of making the same |
| US4104115A (en) * | 1973-11-29 | 1978-08-01 | Carreras Rothmans, Limited | Method of making paper from water insoluble alginate fibers and the paper produced |
| US4421583A (en) * | 1979-04-18 | 1983-12-20 | Courtaulds Limited | Man-made filaments and method of making wound dressings containing them |
| JPS61289886A (en) * | 1985-06-19 | 1986-12-19 | Agency Of Ind Science & Technol | Production of fiber of alginic acid containing active protein and paper made of said fiber |
| US9090868B2 (en) | 2010-07-12 | 2015-07-28 | President And Fellows Of Harvard College | Alginate hydrogel fibers and related materials |
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