摘要:
Process for the synchronised embossing of a extensible printed film (F) or of a laminate product (LM) comprising an extensible printed film, comprising at least the steps of: pre-heating the film; possible coupling of the pre-heated film with a substrate, passage of the film or of the laminate between an engraved embossing cylinder (201), and a pressing counter-cylinder (202), in which the extensible film is subjected to a controlled elongation (”L), in the longitudinal direction only, during the pre-heating step, during which the film is in a thermoplastic state, and said controlled elongation is such as to synchronise the decoration printed on the film with the position of the embossing cylinder.
摘要:
Process for providing a laminate product (L) comprising a substrate and a printed film, the process comprising an embossing step synchronised with a decoration of the printed film and carried out continuously, through the passage of said laminate product between an engraved embossing cylinder (1), and a pressure counter-cylinder (2); the registration of the engraved cylinder (1), for keeping the synchronism between embossing and decoration, comprises suitable displacements of the engraved cylinder (1) and is carried out with a temporary separation (ε) of the counter-cylinder (2) from said engraved cylinder (1), or with a reduction in the embossing pressure existing between the engraved cylinder (1) and the counter-cylinder (2).
摘要:
Process for the synchronised embossing of a extensible printed film (F) or of a laminate product (LM) comprising an extensible printed film, comprising at least the steps of: pre-heating the film; possible coupling of the pre-heated film with a substrate, passage of the film or of the laminate between an engraved embossing cylinder (201), and a pressing counter-cylinder (202), in which the extensible film is subjected to a controlled elongation (ΔL), in the longitudinal direction only, during the pre-heating step, during which the film is in a thermoplastic state, and said controlled elongation is such as to synchronise the decoration printed on the film with the position of the embossing cylinder.
摘要:
Method for providing a laminate product comprising the steps of: continuous coupling between a support substrate and a printed film with a predefined decoration, and by obtaining a laminate sheet (L); synchronised embossing of said laminate sheet, wherein: said embossing is also carried out continuously, through the passage of said laminate product between at least one engraved embossing cylinder (1), and a pressure counter-cylinder (2); the process comprises operations for registering the engraved cylinder (1), to keep the embossing synchronised, with suitable registration displacements (ω R , S R ) of said engraved cylinder, said displacements being operated: simultaneously with a reduction of the thrust pressure present between said engraved cylinder and said counter-cylinder, from a nominal thrust pressure (P) to a lower thrust registration pressure (P R ), or due to a sliding between the surface (3) of said engraved cylinder (1) and the surface (4) of the laminate sheet, the latter being in substantially plastic state due to the temperature.