MULTILAYER FILM AND FILM PACKAGE MADE WITH POSSIBILITY OF REPEATED CLOSING Russian patent published in 2019 - IPC B32B27/00 B32B27/32 B32B27/34 B65D75/58 

FIELD: package and storage.

SUBSTANCE: invention relates to multilayer polymer materials for packaging and relates to a multilayer film and a film package configured to be re-closed. Package contains a co-extrusion multilayer film, in which two co-extrusion layers are separated with a co-extrusion central layer having a binding layer and an adjacent layer of polar polymer resin. Multilayer film comprises film outer part including embedded adhesive layer and film inner part. Opening element formed in the multilayer film contains a valve made so that the user can manipulate it to create an opening in the multilayer film. Inner part of the film comprises a separating layer made especially capable of interacting with the sticky layer to provide the required separation force and the resealing function. Outer part of film comprises outer layer of film arranged on opposite side of adhesive layer relative to separating layer, which is made with possibility of permanent gluing to adhesive layer.

EFFECT: invention provides a film package with a detachable and re-sealed valve, which is separated and resealed at least 10 times, which enables to avoid the use of separate labels for repeated opening.

52 cl, 26 dwg, 5 tbl