US26202A - Improvement in the manufacture of paper-pulp - Google Patents
Improvement in the manufacture of paper-pulp Download PDFInfo
- Publication number
- US26202A US26202A US26202DA US26202A US 26202 A US26202 A US 26202A US 26202D A US26202D A US 26202DA US 26202 A US26202 A US 26202A
- Authority
- US
- United States
- Prior art keywords
- pulp
- paper
- improvement
- manufacture
- straw
- 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
- 229920001131 Pulp (paper) Polymers 0.000 title description 8
- 238000004519 manufacturing process Methods 0.000 title description 8
- 239000010902 straw Substances 0.000 description 18
- 238000009835 boiling Methods 0.000 description 8
- 239000003513 alkali Substances 0.000 description 6
- 239000003518 caustics Substances 0.000 description 6
- 239000002657 fibrous material Substances 0.000 description 4
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 4
- 229920000742 Cotton Polymers 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 238000000926 separation method Methods 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
- D21C3/00—Pulping cellulose-containing materials
- D21C3/02—Pulping cellulose-containing materials with inorganic bases or alkaline reacting compounds, e.g. sulfate processes
Definitions
- a well-known method (patented by Letters Patent No. 17,387) of reducing straw to pulp is to employ a solution of caustic alkali of a strength indicating from 2 to 3 Baum, seventy pounds of the solution to one hundred pounds of cut straw, the whole being placed in a boiler and boiled under a pressure of not less than eightv-four pounds for about three hours time.
- the above method does not sufficiently disintegrate the straw, nor does it sufficiently dissolve or remove the woody, albuminous, and silicious matters from the fibrous portions.
- the pulp produced is therefore coarse, rough, dark-colored, and comparatively impure, and the paper made from it is so brittle as often to break when bent, is weak,rough,and of no great merchantable value.
- a large percentage of better and more i costly fibrous material-such as nnen, cotton, or manila pulp-must be mixed with it.
Landscapes
- Chemical & Material Sciences (AREA)
- Inorganic Chemistry (AREA)
- Paper (AREA)
Description
UNITED STATES J. B. PALSER AND G. HOWLAND,
PATENT QFFICEQ OF FORT EDWARD, NEW YORK.
IMPROVEMENT IN THE MANUFACTURE OF PAPER-PULP.
Specification forming part of Letters Patent No. 26,202, dated Novelnhglztlfimki ".4
vented a new and useful Improvement in the Manufacture of Paper-Pulp; and We do hereby declare that the following is a full, clear, and exact description of the same.
In the manufacture of paper-pulp from straw and other fibrous materials we employ sixty gallons of caustic alkali of a strength indicating 35- to 3;} Baum to every one hundred pounds of the cut straw. The alkaline mixture and straw having been placed in a suitable rotary steam-boiler and the man-hole of the latter closed, the fire is applied below and a pressure of one hundred and ten to one hundred and thirty pounds raised. This pressure is maintained for four hours, the boiler being constantly but slowly rotated and the stock within the boiler being thus kept in gentle agitation.
A well-known method (patented by Letters Patent No. 17,387) of reducing straw to pulp is to employ a solution of caustic alkali of a strength indicating from 2 to 3 Baum, seventy pounds of the solution to one hundred pounds of cut straw, the whole being placed in a boiler and boiled under a pressure of not less than eightv-four pounds for about three hours time. We find in practice that the above method does not sufficiently disintegrate the straw, nor does it sufficiently dissolve or remove the woody, albuminous, and silicious matters from the fibrous portions. The pulp produced is therefore coarse, rough, dark-colored, and comparatively impure, and the paper made from it is so brittle as often to break when bent, is weak,rough,and of no great merchantable value. In order to consume it usefully, a large percentage of better and more i costly fibrous material-such as nnen, cotton, or manila pulp-must be mixed with it.
Our improvement effects an almost complete separation of the silicious, albuminous, and woody matters, leaving the fibrous portions nearly pure, and producing a fine, light-colored, and greatly-improved pulp, which readily converts into a good, strong, pliable, and useful article of paper without any admixture of other fibrous materials.
On comparison of the pulp produced from straw by our method and that made after the mode described in the patent before mentioned a very marked difference in appearance is observable in favor of ourinvention. The paper made from the pulps above mentioned also presents the same striking difference in favor of our improvement.
We do not claim the boiling of the stock under a pressure of eighty-four pounds, nor do we claim any other part or feature of the process described in the Letters Patent No. 17,387 aforesaid. Nor do we claim broadly the employment of alkaline liquids, nor the boiling of the straw or other stock therewith under pressure, nor the use of revolving boilers 5 but,
Having thus described our invention, we claim as new and desire to secure by Letters Patent- The boiling of straw or other stock for about four hours under a pressure of from one hundred and ten to one hundred and thirty pounds in a solution of caustic alkali of a strength indicating from 35 to 3& Baum, substantially in the manner and for the purpose herein set forth.
J. B. PALSER. Gr. HOWLAND. Witnesses: I
J AMES L. REYNOLDS, A. E. BEACH.
Publications (1)
Publication Number | Publication Date |
---|---|
US26202A true US26202A (en) | 1859-11-22 |
Family
ID=2095634
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US26202D Expired - Lifetime US26202A (en) | Improvement in the manufacture of paper-pulp |
Country Status (1)
Country | Link |
---|---|
US (1) | US26202A (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4625233A (en) * | 1985-06-26 | 1986-11-25 | Rca Corporation | I-phase fleshtone correction system using R-Y, G-Y and B-Y color difference signal demodulators |
US20050278450A1 (en) * | 2004-06-01 | 2005-12-15 | Michel Pelletier | Wireless proximity area network connectivity platform |
-
0
- US US26202D patent/US26202A/en not_active Expired - Lifetime
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4625233A (en) * | 1985-06-26 | 1986-11-25 | Rca Corporation | I-phase fleshtone correction system using R-Y, G-Y and B-Y color difference signal demodulators |
US20050278450A1 (en) * | 2004-06-01 | 2005-12-15 | Michel Pelletier | Wireless proximity area network connectivity platform |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
US3817826A (en) | Process for fractionated recovery of lignin and cellulose from bark | |
US26202A (en) | Improvement in the manufacture of paper-pulp | |
US3558428A (en) | Method in the manufacture of chemomechanical pulps | |
US2528351A (en) | Alkaline sulfite digestion of hardwood | |
EP1402108A1 (en) | Method for producing pulp | |
US4229251A (en) | High-yield semi-chemical carbonate pulping process | |
US610957A (en) | Karl andreas zschorner | |
US3262839A (en) | Neutral to weakly alkaline sulfite process for the extraction of cellulose from cellulosic material | |
US1327590A (en) | Process of repulping old or waste paper | |
US23099A (en) | Improvement in paper made from reeds | |
US45510A (en) | Improved process for preparing sawdust for paper-pulp | |
US2618610A (en) | Methods of regenerating a spent cooking liquor resulting from the digestion of a cellulose-lignin complex | |
US27653A (en) | Improvement in the manufacture of straw paper | |
DE599880C (en) | Process for the production of pentose-rich cellulose from cellulose-containing fiber material, in particular grass | |
US29059A (en) | Improvement in manufacture of paper-pulp | |
US1717794A (en) | Pulp and fiber product and process of making same | |
DE665959C (en) | Process for the production of pulp from beech wood | |
US2731344A (en) | Process for making pulp and paper | |
USRE608E (en) | Improvement in manufacture of paper from wood | |
US1868570A (en) | Process for treating woody materials to obtain fibers therefrom | |
US629077A (en) | Fibrous stock and process of making same. | |
US289212A (en) | Btjdolf blitz | |
US45321A (en) | Improvement in the manufacture of paper-pulp | |
US1778199A (en) | Manufacture of pulp | |
US3448004A (en) | Preparation of chemical pulp from wood chips |