GB278460A - Improvements in and connected with the production of printing surfaces - Google Patents
Improvements in and connected with the production of printing surfacesInfo
- Publication number
- GB278460A GB278460A GB17883/26A GB1788326A GB278460A GB 278460 A GB278460 A GB 278460A GB 17883/26 A GB17883/26 A GB 17883/26A GB 1788326 A GB1788326 A GB 1788326A GB 278460 A GB278460 A GB 278460A
- Authority
- GB
- United Kingdom
- Prior art keywords
- sheets
- printing
- matrix
- impregnated
- chromate
- 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
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
- B41N—PRINTING PLATES OR FOILS; MATERIALS FOR SURFACES USED IN PRINTING MACHINES FOR PRINTING, INKING, DAMPING, OR THE LIKE; PREPARING SUCH SURFACES FOR USE AND CONSERVING THEM
- B41N1/00—Printing plates or foils; Materials therefor
- B41N1/12—Printing plates or foils; Materials therefor non-metallic other than stone, e.g. printing plates or foils comprising inorganic materials in an organic matrix
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J5/00—Manufacture of articles or shaped materials containing macromolecular substances
- C08J5/24—Impregnating materials with prepolymers which can be polymerised in situ, e.g. manufacture of prepregs
- C08J5/245—Impregnating materials with prepolymers which can be polymerised in situ, e.g. manufacture of prepregs using natural fibres
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J5/00—Manufacture of articles or shaped materials containing macromolecular substances
- C08J5/24—Impregnating materials with prepolymers which can be polymerised in situ, e.g. manufacture of prepregs
- C08J5/249—Impregnating materials with prepolymers which can be polymerised in situ, e.g. manufacture of prepregs characterised by the additives used in the prepolymer mixture
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J2361/00—Characterised by the use of condensation polymers of aldehydes or ketones; Derivatives of such polymers
- C08J2361/04—Condensation polymers of aldehydes or ketones with phenols only
- C08J2361/06—Condensation polymers of aldehydes or ketones with phenols only of aldehydes with phenols
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Manufacturing & Machinery (AREA)
- Health & Medical Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Organic Chemistry (AREA)
- Paper (AREA)
- Printing Plates And Materials Therefor (AREA)
Abstract
278,460. Hole, E. S. July 16, 1926. Printing-surfaces; stercotype. - Printing-surfaces or matrices for the production thereof are prepared from a base of paper, cellulose, paper pulp, or the like impregnated with a material of the type produced by the action of phenol and formaldehyde or the like, the material being still in the water-soluble state when applied to the base and when placed in a press for moulding against an original. The impregnant consists of a mixture of an aldehyde, a coal-tar intermediate, and an alkaline condensing-agent, preferably formaldehyde and phenol in approximately equal proportions. and a small amount of potassium hydroxide, these being boiled together until no more formaldehyde is evolved. A strip of aluminium or a small amount of boric acid may be added to increase the seething and indicate more clearly the end of the reaction A quantity of cold water is then added, the mixture again boiled, and a solution of ammonium chromate, or ammonium dichromate and ammonia, in water, together with a small amount of copper hydroxide, added. Other chromates or chromic acid may be used. or, if desired, the alkali can first be neutralized and a smaller amount of ammonium dichromate employed. Methylated spirits can also be added, and glycerine, or calcium chromate or borata may be included according as it is desired that the material should dry slowly or rapidly. Sheets of filter paper, cellulose, or paper pulp are impregnated with the material and then allowed to dry. Matrices are prepared from the impregnated sheets by pressing them, at a temperature of about 300 F., on to the originals, which are! preferably heated before the sheets are imposed. The platen bearing against the impregnated sheets is preferably heated 40-60 hotter than the other platen. The platen may be greased to prevent the sheet from sticking. The matrix so prepared can then be used in the preparation of other printing-surfaces from impregnated sheets, the effect of heat and pressure on the impregnant being first to render it temporarily fluid and then to harden it permanently. The sheets intended to be used as matrices may be immersed, after drying, in a weak solution of ammonium or other chromate or dichromate. preferably with an excess of ammonia, in order to prevent sticking. In making printing-surfaces, the cold matrix is preferably placed on a cold metal plate so that the heat of the platen applied to the impregnated sheets affects them before the heat of the other platen which has to traverse the cold plate and matrix. A partly metallic surface for the printing-surface can be obtained by dusting the sheet before heating with the desired metal powder. In order to enable exact reproductions of originals having deep recesses to be prepared, the recesses are first, filled with a material which will unite with the impregnating mixture of the sheets. This material consists of powdered cellulose (such as wood flour), chromic acid solution, and the original sheet-impregnating mixture before the addition of the dichromate, this material being then dried and ground to a fine powder. The amount of chromic acid depends on the amount of potash in the original mixture, and zinc, copper, or aluminium chromate may be dissolved in the chromic acid, or the chromic acid can be replaced or supplemented by calcium chromate. Other metal salts or metals in powder form can be added to the wood flour to produce printing-surfaces partly of metal, and the wood flour can be substituted or supplemented by charcoal. lampblack. powdered cork. or asbestos. In making a matrix from type set by hand or machine, the interstices are filled by a paste made of talcum powder or plumbago and water. The paste is spread over the surface of the type, a number of sheets of blotting-paper being then superposed and the whole subjected to heat and pressure. The surface of the type is then brushed clean, leaving the crevices below the printing- surface of the type filled with the powder which was forced in by the blotting-paper. Also, the sheets used in the preparation of the matrix are preferably interleaved with one or more dry sheets of filter paper. To obtain surfaces of uniform thickness, the backs can be sandpapered or planed, and the surfaces can be strengthened by a sheet of textile at the back of or among the impregnated sheets. The matrices can be used either alone or in conjunction with an ordinary flong matrix for casting metal stereotypes. According to the Provisional Specification, the filling-material for use with originals having deep recesses consists of wood flour, zinc or copper dust and chromate, calcium borate, and the material for impregnating the sheets. The filler for use when preparing matrices from type consists of plaster of Paris. The sheets can be provided with a backing of veneer or other material capableof being sandpapered or planed to enable printing- surfaces of any desired thickness to be obtained.
Priority Applications (6)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
BE342848D BE342848A (en) | 1926-07-16 | ||
NL20975D NL20975C (en) | 1926-07-16 | ||
GB17883/26A GB278460A (en) | 1926-07-16 | 1926-07-16 | Improvements in and connected with the production of printing surfaces |
US194522A US1726151A (en) | 1926-07-16 | 1927-05-26 | Production of stereotypes |
FR641978D FR641978A (en) | 1926-07-16 | 1927-06-13 | Improvements in the production of stereotypes and printing surfaces |
DEH111856D DE474222C (en) | 1926-07-16 | 1927-06-16 | Process for the production of plates which are suitable as direct stereotype printing plates or as matrices using an impregnation containing phenols and aldehydes |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB17883/26A GB278460A (en) | 1926-07-16 | 1926-07-16 | Improvements in and connected with the production of printing surfaces |
Publications (1)
Publication Number | Publication Date |
---|---|
GB278460A true GB278460A (en) | 1927-10-13 |
Family
ID=10102886
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB17883/26A Expired GB278460A (en) | 1926-07-16 | 1926-07-16 | Improvements in and connected with the production of printing surfaces |
Country Status (6)
Country | Link |
---|---|
US (1) | US1726151A (en) |
BE (1) | BE342848A (en) |
DE (1) | DE474222C (en) |
FR (1) | FR641978A (en) |
GB (1) | GB278460A (en) |
NL (1) | NL20975C (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN113427938A (en) * | 2021-07-26 | 2021-09-24 | 淄博泰康轻工制品有限公司 | Decalcomania paper and application thereof |
Families Citing this family (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2703051A (en) * | 1949-02-25 | 1955-03-01 | News Syndicate Co Inc | Matrix for production of plastic printing plates |
US2612481A (en) * | 1949-04-25 | 1952-09-30 | Us Plywood Corp | Phenol aldehyde adhesive containing a chromium compound |
US2825645A (en) * | 1953-03-24 | 1958-03-04 | Burgess Cellulose Company | Stereotype mat |
US2831224A (en) * | 1955-02-21 | 1958-04-22 | Tenak Products Company | Matrix and method of making same |
US3075260A (en) * | 1955-05-09 | 1963-01-29 | Kimberly Clark Co | Stereotype mat |
NL91373C (en) * | 1956-05-16 | 1900-01-01 |
-
0
- BE BE342848D patent/BE342848A/xx unknown
- NL NL20975D patent/NL20975C/xx active
-
1926
- 1926-07-16 GB GB17883/26A patent/GB278460A/en not_active Expired
-
1927
- 1927-05-26 US US194522A patent/US1726151A/en not_active Expired - Lifetime
- 1927-06-13 FR FR641978D patent/FR641978A/en not_active Expired
- 1927-06-16 DE DEH111856D patent/DE474222C/en not_active Expired
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN113427938A (en) * | 2021-07-26 | 2021-09-24 | 淄博泰康轻工制品有限公司 | Decalcomania paper and application thereof |
Also Published As
Publication number | Publication date |
---|---|
DE474222C (en) | 1929-03-28 |
US1726151A (en) | 1929-08-27 |
BE342848A (en) | |
NL20975C (en) | |
FR641978A (en) | 1928-08-14 |
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