US239041A - Process of treating wood for conversion into paper-pulp - Google Patents
Process of treating wood for conversion into paper-pulp Download PDFInfo
- Publication number
- US239041A US239041A US239041DA US239041A US 239041 A US239041 A US 239041A US 239041D A US239041D A US 239041DA US 239041 A US239041 A US 239041A
- Authority
- US
- United States
- Prior art keywords
- wood
- paper
- pulp
- conversion
- treating wood
- 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
- 239000002023 wood Substances 0.000 title description 44
- 238000000034 method Methods 0.000 title description 10
- 238000006243 chemical reaction Methods 0.000 title description 6
- 229920001131 Pulp (paper) Polymers 0.000 title description 4
- 239000003518 caustics Substances 0.000 description 10
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 8
- 239000003513 alkali Substances 0.000 description 6
- 238000009833 condensation Methods 0.000 description 4
- 230000005494 condensation Effects 0.000 description 4
- 238000005520 cutting process Methods 0.000 description 4
- CDBYLPFSWZWCQE-UHFFFAOYSA-L sodium carbonate Chemical compound [Na+].[Na+].[O-]C([O-])=O CDBYLPFSWZWCQE-UHFFFAOYSA-L 0.000 description 4
- 238000010025 steaming Methods 0.000 description 4
- 239000000126 substance Substances 0.000 description 4
- 235000008331 Pinus X rigitaeda Nutrition 0.000 description 2
- 235000011613 Pinus brutia Nutrition 0.000 description 2
- 241000018646 Pinus brutia Species 0.000 description 2
- 230000004523 agglutinating Effects 0.000 description 2
- 238000009835 boiling Methods 0.000 description 2
- 238000000227 grinding Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 230000035515 penetration Effects 0.000 description 2
- 238000002360 preparation method Methods 0.000 description 2
- 238000004537 pulping Methods 0.000 description 2
- 239000011347 resin Substances 0.000 description 2
- 229920005989 resin Polymers 0.000 description 2
- 238000004513 sizing Methods 0.000 description 2
- 229910000029 sodium carbonate Inorganic materials 0.000 description 2
- 235000017550 sodium carbonate Nutrition 0.000 description 2
Classifications
-
- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21C—PRODUCTION OF CELLULOSE BY REMOVING NON-CELLULOSE SUBSTANCES FROM CELLULOSE-CONTAINING MATERIALS; REGENERATION OF PULPING LIQUORS; APPARATUS THEREFOR
- D21C1/00—Pretreatment of the finely-divided materials before digesting
- D21C1/02—Pretreatment of the finely-divided materials before digesting with water or steam
Definitions
- the first step of my process relates to the preparation of the wood to be pulped. I out it into bolts about one inch less in length than the width of the grindstone used in its final reduction. I then divide it into slices about half an inch in thickness, using for this purpose a knife, such as is used in stave-cutting machines, having a thick edge, and so ground and set as to bend and check the slice cut off and open it in as many places as possible, to allow of the easy penetration of the chemical liquors to all parts of the wood. In this operation one side of the knife-edge is, as nearly as possible, parallel with the grain of the wood. The wood thus prepared is next placed in open or closed tubs or vats and steamed, with or.
- the caustic liquor is then drawn oii and the wood again steamed for from two to four hours, and during this stage of the process if hot water is allowed to flow over and through the wood the pulp made from I have found that when pine or other resinous wood is used the resin and pitch in the wood are converted, by the action of the steam and caustic liquors, into a good sizing, and no other size is required when the pulp is run into paper.
Description
I UNITED STATES PATENT OFFICE.
HENRY A.FRAMBAGH, OF KAUKAUNA, WISCONSIN.
PROCESS OF TREATING WOOD FOR CONVERSION lNTO PAPER-PULPa SPECIFICATION forming part of Letters Patent No. 239,041, dated March 22, 1881.
Application filed October 21, 1880. (No specimens.)
To all irhom it may concern:
Be it known that I, HENRY A. FRAMBACH,
of Kaukauna, in'the county of Outagamie and State of Wisconsin, have invented certain new and useful Improvements in the Process for Treating Wood for Conversion into Paper- Pulp; and 1 do hereby declare that the following is a full, clear, and exact description of the invention, which will enable others skilled in the art to which it appertains to make and use the same.
The first step of my process relates to the preparation of the wood to be pulped. I out it into bolts about one inch less in length than the width of the grindstone used in its final reduction. I then divide it into slices about half an inch in thickness, using for this purpose a knife, such as is used in stave-cutting machines, having a thick edge, and so ground and set as to bend and check the slice cut off and open it in as many places as possible, to allow of the easy penetration of the chemical liquors to all parts of the wood. In this operation one side of the knife-edge is, as nearly as possible, parallel with the grain of the wood. The wood thus prepared is next placed in open or closed tubs or vats and steamed, with or.
without pressure, from two to four hours, the time varying somewhat according to the kind of wood under treatment and the kind of paper to be made. The water of condensation is then completely drawn off. 1 next fill the tub with a weak solution of caustic alkali and boil the wood for about forty-eight hours. For making amanila or dry-goods paper, from twenty-five to fifty pounds of soda-ash for each cord of wood will be sufficient. If the wood is allowed to remain in the hot caustic liquor from four to seven days a better result will be obtained. The caustic liquor is then drawn oii and the wood again steamed for from two to four hours, and during this stage of the process if hot water is allowed to flow over and through the wood the pulp made from I have found that when pine or other resinous wood is used the resin and pitch in the wood are converted, by the action of the steam and caustic liquors, into a good sizing, and no other size is required when the pulp is run into paper.
Having thus fully described my improved process for pulping wood, what Iclaim, and desire to secure by Letters Patent, is-
The above-described treatment of wood preparatory to its conversion into pulp for the manufacture of paper. the same consisting in the following series of steps: first, subjecting the wood to the action of a thick-edge knife, for the purpose of cutting the wood into thin slices, and bend1ng,- checking, and partially splittlng and opening the same to the ready entrance of the chemical solutions; second, steaming the wood thus prepared in open or closed vessels, with or without pressure, from two to four hours, and then drawing 05 the water of condensation; third,-boiling the wood in a weak solution of caustic alkali for fortyeight hours, preferably allowing it to remain in the hot solution from four to seven days before drawing off the liquor; fourth, removing the alkali and the dissolved resinous and agglutinating materials from the wood by again steaming it for from two to four hours, while hot water is allowed to flow upon and through it; fifth, grinding the wood into pulp and running it into paper by the ordinary methods.
In testimony that I claim the foregoing as my own invention I affix my signature in presence of two witnesses.
HENRY A. FRAMBAGH.
Witnesses:
P. D. Noa'roN, G. 0. LOVE.
Publications (1)
Publication Number | Publication Date |
---|---|
US239041A true US239041A (en) | 1881-03-22 |
Family
ID=2308389
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US239041D Expired - Lifetime US239041A (en) | Process of treating wood for conversion into paper-pulp |
Country Status (1)
Country | Link |
---|---|
US (1) | US239041A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2543061A (en) * | 1947-05-19 | 1951-02-27 | Lever Brothers Ltd | Hair-dressing composition |
-
0
- US US239041D patent/US239041A/en not_active Expired - Lifetime
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2543061A (en) * | 1947-05-19 | 1951-02-27 | Lever Brothers Ltd | Hair-dressing composition |
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