GB961637A - Inorganic sheet and method for its manufacture - Google Patents
Inorganic sheet and method for its manufactureInfo
- Publication number
- GB961637A GB961637A GB2788862A GB2788862A GB961637A GB 961637 A GB961637 A GB 961637A GB 2788862 A GB2788862 A GB 2788862A GB 2788862 A GB2788862 A GB 2788862A GB 961637 A GB961637 A GB 961637A
- Authority
- GB
- United Kingdom
- Prior art keywords
- headbox
- inorganic particles
- cationic agent
- slurry
- sheet
- 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
- D21H13/00—Pulp or paper, comprising synthetic cellulose or non-cellulose fibres or web-forming material
- D21H13/36—Inorganic fibres or flakes
- D21H13/38—Inorganic fibres or flakes siliceous
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B44—DECORATIVE ARTS
- B44C—PRODUCING DECORATIVE EFFECTS; MOSAICS; TARSIA WORK; PAPERHANGING
- B44C1/00—Processes, not specifically provided for elsewhere, for producing decorative surface effects
- B44C1/16—Processes, not specifically provided for elsewhere, for producing decorative surface effects for applying transfer pictures or the like
- B44C1/165—Processes, not specifically provided for elsewhere, for producing decorative surface effects for applying transfer pictures or the like for decalcomanias; sheet material therefor
- B44C1/17—Dry transfer
- B44C1/1712—Decalcomanias applied under heat and pressure, e.g. provided with a heat activable adhesive
-
- 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
- D21H17/00—Non-fibrous material added to the pulp, characterised by its constitution; Paper-impregnating material characterised by its constitution
- D21H17/20—Macromolecular organic compounds
- D21H17/21—Macromolecular organic compounds of natural origin; Derivatives thereof
- D21H17/24—Polysaccharides
- D21H17/28—Starch
- D21H17/29—Starch cationic
-
- 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
- D21H17/00—Non-fibrous material added to the pulp, characterised by its constitution; Paper-impregnating material characterised by its constitution
- D21H17/63—Inorganic compounds
- D21H17/67—Water-insoluble compounds, e.g. fillers, pigments
- D21H17/68—Water-insoluble compounds, e.g. fillers, pigments siliceous, e.g. clays
-
- 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
- D21H23/00—Processes or apparatus for adding material to the pulp or to the paper
Landscapes
- Chemical & Material Sciences (AREA)
- Inorganic Chemistry (AREA)
- Dispersion Chemistry (AREA)
- Paper (AREA)
Abstract
A method of forming an inorganic sheet comprises the steps of preparing a homogeneous aqueous slurry of inorganic particles and colloidal silica, feeding said slurry and a colloidal solution of a cationic agent simultaneously to the headbox of a paper machine and depositing the headbox mixture upon the screen of the paper machine. The inorganic particles may be of fibre or flake form or combinations thereof and may be selected from the class consisting of glass, quartz, ceramic material, mineral wool and mica flakes. The inorganic particles are present in the sheet product in quantities ranging from 70% to 98% and the silica, which is uniformly distributed through the sheet upon the surfaces of the inorganic particles, in quantities from 2 to 30% by weight. A minor amount of cationic agent which is preferably an amine modified starch appears in the final product though it may be added to the headbox in quantities ranging from 0.5% to 10% of the solids content of the headbox slurry. The pH of the headbox mixture is maintained between 2.7 and 6.0 by the addition either directly to the headbox or to the solution of cationic agent of a suitable acid salt such as potassium aluminium sulphate or mineral acid such as hydrochloric acid. Where the inorganic particles comprise mica flakes, however, the pH is preferably within the range 6.5 to 8.0. In Example 7 54.1% by weight of activated carbon is included as a filler together with microglass fibre. Specification 961,636 is referred to.ALSO:A method of forming an inorganic sheet comprises the steps of preparing a homogeneous aqueous slurry of inorganic particles and colloidal silica, feeding said slurry and a colloidal solution of a cationic agent simultaneously to the headbox of a paper machine and depositing the headbox mixture upon the screen of the paper machine. The inorganic particles may be of fibre or flake form or combinations thereof and may be selected from the class consisting of glass, quartz, ceramic material, mineral wool and mica flakes. The inorganic particles are present in the sheet product in quantities ranging from 70% to 98% and the silica, which is uniformly distributed through the sheet upon the surface of the inorganic particles, in quantities from 2 to 30% by weight. A minor amount of cationic agent which is preferably an amine modified starch appears in the final product though it may be added to the headbox in quantities ranging from 0.5% to 10% of the solids content of the headbox slurry. The pH of the headbox mixture is maintained between 2.7 and 6.0 by the addition either directly to the headbox or to the solution of cationic agent of a suitable acid salt such as potassium aluminium sulphate or mineral acid such as hydrochloric acid. Where the inorganic particles comprise mica flakes, however, the pH is preferably within the range 6.5 to 8.0. In Example 7 54.1% by weight of activated carbon is included as a filler together with microglass fibre. Specification 961,636 is referred to.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US12511261A | 1961-07-19 | 1961-07-19 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB961637A true GB961637A (en) | 1964-06-24 |
Family
ID=22418234
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB2788862A Expired GB961637A (en) | 1961-07-19 | 1962-07-19 | Inorganic sheet and method for its manufacture |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB961637A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0781209A1 (en) * | 1994-09-06 | 1997-07-02 | University Of Queensland | A printable flexible sheet |
-
1962
- 1962-07-19 GB GB2788862A patent/GB961637A/en not_active Expired
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0781209A1 (en) * | 1994-09-06 | 1997-07-02 | University Of Queensland | A printable flexible sheet |
| EP0781209A4 (en) * | 1994-09-06 | 1998-01-07 | Univ Queensland | A printable flexible sheet |
| US5840393A (en) * | 1994-09-06 | 1998-11-24 | The University Of Queensland | Printable flexible sheet |
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