GB1212785A - Improvements in production of plastics material printing plates - Google Patents

Improvements in production of plastics material printing plates

Info

Publication number
GB1212785A
GB1212785A GB3675968A GB3675968A GB1212785A GB 1212785 A GB1212785 A GB 1212785A GB 3675968 A GB3675968 A GB 3675968A GB 3675968 A GB3675968 A GB 3675968A GB 1212785 A GB1212785 A GB 1212785A
Authority
GB
United Kingdom
Prior art keywords
resin
platen
matrix
face
lowered
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
GB3675968A
Inventor
Eugene Louis Bernardi
Henry Anthony Krysiak
Thomas Peter Bruno
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.)
Reichhold Chemicals Inc
Original Assignee
Reichhold Chemicals Inc
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 Reichhold Chemicals Inc filed Critical Reichhold Chemicals Inc
Priority to GB3675968A priority Critical patent/GB1212785A/en
Publication of GB1212785A publication Critical patent/GB1212785A/en
Expired legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41C—PROCESSES FOR THE MANUFACTURE OR REPRODUCTION OF PRINTING SURFACES
    • B41C3/00—Reproduction or duplicating of printing formes
    • B41C3/08—Electrotyping; Application of backing layers thereon
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C39/00—Shaping by casting, i.e. introducing the moulding material into a mould or between confining surfaces without significant moulding pressure; Apparatus therefor

Landscapes

  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Moulds For Moulding Plastics Or The Like (AREA)

Abstract

1,212,785. Printing-surfaces. REICHHOLD CHEMICALS Inc. 1 Aug., 1968, No. 36759/68. Addition to 1,205,978. Heading B6C. ' A printing plate is made by placing a matrix to be cast from on an inclined surface, applying a liquid thermosetting resin 17 to the face of the matrix adjacent its upper edge and allowing it to flow under gravity over the face of the matrix towards its lower edge, meanwhile progressively confining, by lowering of platen 19, it at a rate not exceeding the rate of advance of the leading edge 17a of the resin. Platen 19 may be lowered quickly until it is almost in contact with the resin, then be lowered at a decreasing rate under hydraulic control from cylinder 75 to correspond with slowing of edge 17a as the resin spreads. Both platen 19 and the support on whose face the matrix is supported may act as heat-sinks for heat produced exothermically by the resin, as may top member 18, and they may be heated to a temperature below the peak temperature of the resin before casting begins. Both the platen 19 and the support for the matrix may be of 3 inch mild steel. Curing of the resin continues after platen 19 has been fully lowered and the resin completely confined. The resin used may be a polyester resin.
GB3675968A 1968-08-01 1968-08-01 Improvements in production of plastics material printing plates Expired GB1212785A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB3675968A GB1212785A (en) 1968-08-01 1968-08-01 Improvements in production of plastics material printing plates

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB3675968A GB1212785A (en) 1968-08-01 1968-08-01 Improvements in production of plastics material printing plates

Publications (1)

Publication Number Publication Date
GB1212785A true GB1212785A (en) 1970-11-18

Family

ID=10390976

Family Applications (1)

Application Number Title Priority Date Filing Date
GB3675968A Expired GB1212785A (en) 1968-08-01 1968-08-01 Improvements in production of plastics material printing plates

Country Status (1)

Country Link
GB (1) GB1212785A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4036923A (en) * 1975-03-03 1977-07-19 Exxon Research And Engineering Company Method for forming large reinforced foamed plastic panels
US5447675A (en) * 1993-02-25 1995-09-05 Recycled Plastics, Inc. Method and apparatus for forming plastic panels from recycled plastic chips

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4036923A (en) * 1975-03-03 1977-07-19 Exxon Research And Engineering Company Method for forming large reinforced foamed plastic panels
US5447675A (en) * 1993-02-25 1995-09-05 Recycled Plastics, Inc. Method and apparatus for forming plastic panels from recycled plastic chips

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Legal Events

Date Code Title Description
PS Patent sealed
PLNP Patent lapsed through nonpayment of renewal fees