Plastic and nonmetallic article shaping or treating: processes – With step of making mold or mold shaping – per se – Utilizing surface to be reproduced as an impression pattern
Patent
1976-06-23
1978-07-04
Pavelko, Thomas P.
Plastic and nonmetallic article shaping or treating: processes
With step of making mold or mold shaping, per se
Utilizing surface to be reproduced as an impression pattern
1014011, 264 25, 264293, 264322, B41C 306
Patent
active
040987850
ABSTRACT:
A method of manufacturing thermoplastic duplication plates having a relief image transcribed thereto from a matrix which has a relief pattern in complemental relation to the transcribed relief image. To this end, a thermoplastic resin sheet is fed onto a rotating cylinder heated to a predetermined temperature and is then transported towards a transcription station carried by the rotating cylinder while it clings to the outer peripheral surface of the cylinder. At the transcription station, the thermoplastic resin sheet then heated to a semi-fluidized state is registered or aligned with the matrix being moved in a linear direction substantially tangential to the outer peripheral surface of the cylinder. During passage through the transcription station, the thermoplastic resin sheet is transferred onto the matrix with the material penetrating deep into indentations in the matrix. Therefore, the thermoplastic resin sheet is cooled and subsequently separated from the matrix, thereby completing the thermoplastic duplication plate.
REFERENCES:
patent: 2496014 (1950-01-01), Myers
patent: 2825094 (1958-03-01), Zeigler
patent: 3874836 (1975-04-01), Johnson
Aisu Nobuo
Haruta Yasuo
Morino Ikuo
Nagasoe Kazumasa
Shiga Norio
Nippon Paint Co. Ltd.
Pavelko Thomas P.
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