GB399936A - Improvements in or relating to the treatment of flexible flongs used in printing - Google Patents

Improvements in or relating to the treatment of flexible flongs used in printing

Info

Publication number
GB399936A
GB399936A GB1677432A GB1677432A GB399936A GB 399936 A GB399936 A GB 399936A GB 1677432 A GB1677432 A GB 1677432A GB 1677432 A GB1677432 A GB 1677432A GB 399936 A GB399936 A GB 399936A
Authority
GB
United Kingdom
Prior art keywords
rubber
backing
street
flexible
flongs
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
Application number
GB1677432A
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
LONDON EXPRESS NEWSPAPER Ltd
SYDNEY WALTER HERBERT LONG
Dunlop Rubber Co Ltd
Original Assignee
LONDON EXPRESS NEWSPAPER Ltd
SYDNEY WALTER HERBERT LONG
Dunlop Rubber Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by LONDON EXPRESS NEWSPAPER Ltd, SYDNEY WALTER HERBERT LONG, Dunlop Rubber Co Ltd filed Critical LONDON EXPRESS NEWSPAPER Ltd
Publication of GB399936A publication Critical patent/GB399936A/en
Expired legal-status Critical Current

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
    • B41N11/00—Stereotype mats

Abstract

399,936. Stereotype matrices. LONG, S. W. H., 18, Southend Road, Beckenham, Kent, GRAHAM, M., 75, Victoria Street, LONDON EXPRESS NEWSPAPER, Ltd., Fleet Street, and DUNLOP RUBBER CO., Ltd., 32, Osnaburgh Street, all in London. June 14, 1932, No. 16774. [Class 100 (ii).] In order to prevent deformation of the flexible flongs during casting of printing- surfaces, they are provided with a heat-resisting flexible backing composed of a vulcanizable material. The backing is mainly composed of rubber, guttapercha, balata, or the like, and can be applied either in the form of a plasticized sheet or an artificial or natural aqueous dispersion. In the former case, a thin unvulcanized sheet of rubber is placed on the back of the flong and the two are embossed together, vulcanization being ejected either simultaneously or subsequently. The aqueous dispersions may be applied by pouring, spreading, painting, or spraying, and may comprise dispersions of coagulated rubber, vulcanized rubber, synthetic rubber, waste, or reclaim to which known compounding-ingredients or concentrates obtained according to Specifications 290,313 or 291,635, may be added. In an example, a composition containing rubber, sulphur, zinc oxide, zinc diethyl-dithiocarbamate, barytes, and limestone dust is employed. The backing is dried by heating under normal or reduced pressure.
GB1677432A 1932-06-14 1932-06-14 Improvements in or relating to the treatment of flexible flongs used in printing Expired GB399936A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB1674432 1932-06-14

Publications (1)

Publication Number Publication Date
GB399936A true GB399936A (en) 1933-10-19

Family

ID=10082871

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1677432A Expired GB399936A (en) 1932-06-14 1932-06-14 Improvements in or relating to the treatment of flexible flongs used in printing

Country Status (1)

Country Link
GB (1) GB399936A (en)

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