Global Patent Index - EP 0993963 A1

EP 0993963 A1 2000-04-19 - Plastic film continuous printing process, apparatus therefore and plastic film printed by the same

Title (en)

Plastic film continuous printing process, apparatus therefore and plastic film printed by the same

Title (de)

Endlosdruckverfahren für einen Plastikfilm, Gerät hierfür, sowie damit hergestellter bedruckter Plastikfilm

Title (fr)

Procédé d'impression en continu d'un film plastique, dispositif pour sa mise en oeuvre et film plastique imprimé obtenu par le procédé

Publication

EP 0993963 A1 (FR)

Application

EP 99402398 A

Priority

FR 9812862 A

Abstract (en)

A temporary support (3) is applied to the rear of the film (4), initially non-adherent, being e.g. paper. Heating softens the plastic, inducing temporary adhesion. The paper maintains film dimensional stability, during subsequent thermal printing. A pattern is transferred by sublimation from an impregnated printing paper (14). Set heat and pressure are applied, printing the design onto the film. Once the design is printed onto the front of the film, the film and paper are cooled, permitting their separation. An Independent claim is included for the corresponding continuous printing equipment. Preferred features: The temperature promoting adhesion between paper and film is 100-200 degrees C, preferably 170-180 degrees C. Sublimation transfer temperature is 170-230 degrees C. The result is cooled to 20-30 degrees C. The printing paper (14) is pre-impregnated with sublimating colors, with a small content of softening or parting agents, to prevent adhesion between film and printing paper during sublimation printing. A flocked plastic film is prepared for printing, by applying a layer of adhesive to its rear, onto which white fibers are flocked

Abstract (fr)

Procédé d'impression en continu d'un film plastique (4), caractérisé en ce qu'il consiste à : appliquer sur le verso du film plastique un support provisoire (3) anti-adhérent, chauffer l'ensemble du film plastique et du support provisoire à une température telle que le film plastique atteigne son point de ramollissement pour coller temporairement au support provisoire, transférer par sublimation un motif constitué d'une encre sublimable préimprimée sur un papier d'impression (14), par contact sous une pression et une température déterminées avec le recto du film plastique thermocollé au support provisoire, refroidir l'ensemble du film plastique ainsi imprimé (104) et du support provisoire (3) à une température permettant le décollement du support provisoire. <IMAGE>

IPC 1-7 (main, further and additional classification)

B41M 5/035; B41F 16/02; G03F 1/00

IPC 8 full level (invention and additional information)

B41F 16/02 (2006.01); B41M 5/035 (2006.01); G03F 1/00 (2012.01)

CPC (invention and additional information)

B41F 16/02 (2013.01); B41M 5/035 (2013.01); B41M 5/0358 (2013.01); B41M 5/0011 (2013.01); B41M 5/0041 (2013.01); B41M 5/0052 (2013.01)

Citation (search report)

Designated contracting state (EPC)

AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE

DOCDB simple family

EP 0993963 A1 20000419; EP 0993963 B1 20030326; AT 235377 T 20030415; DE 69906212 D1 20030430; DE 69906212 T2 20040205; ES 2194424 T3 20031116; FR 2784618 A1 20000421; FR 2784618 B1 20001124; PT 993963 E 20030630; US 6249297 B1 20010619