FR2552024A1 - Stereotype printing flong and its method of manufacture - Google Patents

Stereotype printing flong and its method of manufacture Download PDF

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Publication number
FR2552024A1
FR2552024A1 FR8314897A FR8314897A FR2552024A1 FR 2552024 A1 FR2552024 A1 FR 2552024A1 FR 8314897 A FR8314897 A FR 8314897A FR 8314897 A FR8314897 A FR 8314897A FR 2552024 A1 FR2552024 A1 FR 2552024A1
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Prior art keywords
layer
blank
printing
eye
mass
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FR8314897A
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French (fr)
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FR2552024B1 (en
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MOUREAU LUCETTE
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MOUREAU LUCETTE
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Priority to FR8314897A priority Critical patent/FR2552024B1/en
Publication of FR2552024A1 publication Critical patent/FR2552024A1/en
Application granted granted Critical
Publication of FR2552024B1 publication Critical patent/FR2552024B1/en
Expired legal-status Critical Current

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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
    • 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

Abstract

The present invention relates to a method of manufacturing stereotype printing flongs making it possible to obtain, from mixtures of phenolic moulding compounds and plastified charges, a flong which is sufficiently soft after preheating to enable the prints of stereotype printing to be taken on hard photo-polymers without risking their deterioration.

Description

Il est connu de fabriquer les flans de @@icherie composés de plusieurs couches superposées,de matières thermodur@issables, distribuées eu phase A et amonées, sous des conditions de pression @t de température déterminées, en phase B afin d'obteuir des plaques qui, réchauffées, ramolissent pendant quelques secondes avant durcissement par condensation.It is known to manufacture the blanks of @@ icherie composed of several superimposed layers, of thermosetting materials @ issis, distributed in phase A and amonized, under conditions of pressure @t determined temperature, in phase B in order to obtain plates which, when heated, soften for a few seconds before hardening by condensation.

Les prises d'empreinte se font pendant cette période de ramelissement.The impressions are taken during this softening period.

Le brevet 70.28268 donne le processus de fabrication.Patent 70.28268 gives the manufacturing process.

No@s avons amélioré ce flan afin de permettre le moulage des clichés en photopolymère dur. We have improved this blank to allow the molding of hard photopolymer plates.

Pour ce faire, nous avons modifié la composition des mélanges.To do this, we have modified the composition of the mixtures.

les proportions d@ résines et de charges sont différentes. Le mélange est plastifié par apport d'hexaméthylène tétramine et de stéarate de calcium.the proportions of resins and fillers are different. The mixture is plasticized by adding hexamethylene tetramine and calcium stearate.

Les caractéristiques ressortiront mieux de la description qui suit.The characteristics will emerge more clearly from the description which follows.

Sur un moule en acier inoxydable, on vaporise un agent de démou lage à base d'huile de silicone. On a stainless steel mold, a release agent based on silicone oil is sprayed.

On dépose ensuite sur le fond du moule, une couche de surface très mince faite d'une poudre à mouler à base de phénoplaste enrichie avec des phénols.Then deposited on the bottom of the mold, a very thin surface layer made of a molding powder based on phenoplast enriched with phenols.

Cette poudre, très fine, est obtenue par broyage et tamisage au temis maille 120.This very fine powder is obtained by grinding and sieving with a 120 mesh sieve.

Ensuite, sur cette très mince couche, on distribue une couche d'oe@l ayant une épai@s@ur d'e@viron 3 mm. Cette couche est faite au départ d'un mélange de poudre, constitué par : - 20,000 kg de poudre phénoplastes riche en phénol, - 2.000 kg de fibre de coton, - 0,500 kg d'hexaméthylène tétramine, - 2,500 kg de stéarate de calcium
Par dessus cette couche d'ceil, est distribuée une couche - dite de masse - constituée par un mélange de : - 100,000 kg de phénoplastes, - 12,000 kg de fibre de coton, - 2,500 kg d'hexaméthylène t@ramine, - 5,000 kg de stéarate de calcium
L'épaisseur de cette couche de masse varie de 5 à 10 mm selon l'épaisseur désirée du flan.Then, on this very thin layer, an eye layer having a thickness of about 3 mm is distributed. This layer is made from a powder mixture, consisting of: - 20,000 kg of phenol-rich phenol powder, - 2,000 kg of cotton fiber, - 0,500 kg of hexamethylene tetramine, - 2,500 kg of calcium stearate
Above this layer of eye, is distributed a layer - called mass - consisting of a mixture of: - 100,000 kg of phenoplasts, - 12,000 kg of cotton fiber, - 2,500 kg of hexamethylene t @ ramine, - 5,000 kg calcium stearate
The thickness of this mass layer varies from 5 to 10 mm depending on the desired thickness of the blank.

L'ensemble recouvert par un carton feutre est ensuite introduit entre les plateaux chauffés à 100/110 d'une presse.The whole covered by a felt cardboard is then introduced between the trays heated to 100/110 of a press.

Il y reste sous 50 à 60 kg de prossion pendant@une durée de une minute à une minute et demi selon d'épaisseur du flan.It remains there under 50 to 60 kg of prossion for @ a period of one minute to one and a half minutes depending on thickness of the blank.

Refroidi, le flan est démo@lé. Cooled, the blank is demolished.

Il est prêt à l'emploi. It is ready to use.

Claims (4)

- REVENDICATIONS- CLAIMS 1. Flan de clicherie comportant plusieurs couches superposées, à savoir : couche de surface, couche dtoeil, couche de masse et dos constitué par un carton feutre, caractérisé en ce que sa couche d'oeil est faite par un mélange de poudres, constitué par - 20,00t kg de poudre phénoplastes, - 2,000 kg de fibre de coton, - 0,500 kg d'hexaméthylène tétramine, - 2,500 kg de stéarate de calcium1. Printing blank comprising several superimposed layers, namely: surface layer, eye layer, mass layer and back made up of a felt cardboard, characterized in that its eye layer is made by a mixture of powders, made up of - 20.00t kg of phenoplast powder, - 2,000 kg of cotton fiber, - 0,500 kg of hexamethylene tetramine, - 2,500 kg of calcium stearate 2. Flan de clicherie selon renvendication 1 caractérisé par le fait que la couche de masse est constituée par un mélange de - 100,000 kg de phénoplastes, - )2,000 kg de fibre de coton, - 2,50C kg d'hexaméthylène tétramine, - 5,000 kg de stéarate de calcium2. Plate printing according to claim 1 characterized in that the mass layer consists of a mixture of - 100,000 kg of phenoplasts, -) 2,000 kg of cotton fiber, - 2,50C kg of hexamethylene tetramine, - 5,000 kg of calcium stearate 3.Procédé de fabrication d'un flan de clicherie selon l'une quelconque des revendications 1 et 2 mis en oeuvre * en vaporisant un agent de démoulage sur un moule en acier3. Process for manufacturing a printing blank according to any one of claims 1 and 2 implemented * by spraying a release agent on a steel mold inoxydable, * en déposant sur cet agent de démoulage, une couche de surface stainless, * by depositing a surface layer on this release agent très fine obtenue par mélange de poudre à mouler phenoplaste very fine obtained by mixing phenoplast molding powder enrichie avec des phénols, * en recouvrant cette couche de surface d'une couche d'oeil enriched with phenols, * by covering this surface layer with an eye layer selon revendication 1 * en déposant au-dessus de cette couche d'oeil, une couche de masse according to claim 1 * by depositing above this eye layer, a layer of mass selon revendication 2 dont l'épaisseur est fonction de celle according to claim 2, the thickness of which is a function of that désirée pQW le flan. desired pQW blank. 4. Procédé de fabrication d'un flan de clicherie selon revendications 1,2 et 3 dans lequel l'ensemble des poudres mises dans le moule est recouvert d'un carton feutre et introduit entre les plateaux chauffés à 100j110 d'une presse où il reste sous une pression de 50/60 k pendant une minute à une minute et demi selon l'épaisseur du flan.4. A method of manufacturing a printing plate according to claims 1,2 and 3 wherein all the powders put in the mold is covered with a felt cardboard and introduced between the trays heated to 100j110 of a press where it remains under a pressure of 50/60 k for one minute to one and a half minutes depending on the thickness of the blank. Refroidi, le flan est démoulé. il est prêt à l'emploi. Cooled, the blank is demolded. it is ready to use.
FR8314897A 1983-09-16 1983-09-16 CARDBOARD BLANCH AND MANUFACTURING METHOD THEREOF Expired FR2552024B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FR8314897A FR2552024B1 (en) 1983-09-16 1983-09-16 CARDBOARD BLANCH AND MANUFACTURING METHOD THEREOF

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR8314897A FR2552024B1 (en) 1983-09-16 1983-09-16 CARDBOARD BLANCH AND MANUFACTURING METHOD THEREOF

Publications (2)

Publication Number Publication Date
FR2552024A1 true FR2552024A1 (en) 1985-03-22
FR2552024B1 FR2552024B1 (en) 1987-08-21

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Family Applications (1)

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FR8314897A Expired FR2552024B1 (en) 1983-09-16 1983-09-16 CARDBOARD BLANCH AND MANUFACTURING METHOD THEREOF

Country Status (1)

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FR (1) FR2552024B1 (en)

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1596411A (en) * 1968-12-26 1970-06-15
FR2035424A5 (en) * 1970-02-13 1970-12-18 Sumitomo Bakelite Co
FR2098906A5 (en) * 1970-07-20 1972-03-10 Moureau Georges Stereotype matrix - using phenoplasts usable under low pressures
JPS50146605A (en) * 1974-05-17 1975-11-25
US4137363A (en) * 1975-05-27 1979-01-30 Rogers Corporation Matrix material for printing plates and method of manufacture thereof
US4194996A (en) * 1978-10-10 1980-03-25 Uralsky Lesotekhnichesky Institut Phenol formaldehyde compression moulding composition comprising phenol formaldehyde-wood filler

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1596411A (en) * 1968-12-26 1970-06-15
FR2035424A5 (en) * 1970-02-13 1970-12-18 Sumitomo Bakelite Co
FR2098906A5 (en) * 1970-07-20 1972-03-10 Moureau Georges Stereotype matrix - using phenoplasts usable under low pressures
JPS50146605A (en) * 1974-05-17 1975-11-25
US4137363A (en) * 1975-05-27 1979-01-30 Rogers Corporation Matrix material for printing plates and method of manufacture thereof
US4194996A (en) * 1978-10-10 1980-03-25 Uralsky Lesotekhnichesky Institut Phenol formaldehyde compression moulding composition comprising phenol formaldehyde-wood filler

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
CHEMICAL ABSTRACTS, vol. 84, no. 20, 17 mai 1976, page 294, résumé no. 139867r COLUMBUS OHIO (US) & JP - A - 75 146 605 (TOYOTA MOTOR CO., LTD.)(25-11-1975) *

Also Published As

Publication number Publication date
FR2552024B1 (en) 1987-08-21

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