Abstract:
A station (S) of application of segments of opening/closing strip on plastic web films suitable to form bags, comprising punching means (U14, U22) of predefined areas of the plastic film for the access to areas of the segments through the film, and welding means (U15, U23) of the strip segments at intervals on the plastic film, wherein the punching means (U14, U22) and the welding means (U15, U23) are positioned along the flow path of the film to act in sequence on the same area in order to, respectively, punch the film and weld the segments in the predetermined points of the plastic film. In particular, the station (S) comprises two operating units (U1, U11; U2, U21), suitable to cooperate from opposite sides with the plastic film, each of which provided with the punching means (U14, U22) and the welding means (U15, U23), angularly staggered with respect to the punching means (U14, U22), and operatively connected with translation means (U31) that move at least one of the operating units (U1, U11; U2, U21) to bring them closer and separated, allowing the execution of the punching of the plastic film by the punching means (U14, U22) and the welding of the strip segment in the punched area of the plastic film, and with motorization means (U12, U21) that rotate the operating units (U1, U11; U2, U21) around longitudinal axes for selectively and alternately arranging the welding means (U15, U23) and the punching means (U14, U22) facing to the plastic film.
Abstract:
An opening and reclosing device for flexible containers (1), comprising a label (8) having an adhesive face (10) intended to be applied to a wall (3) of the container in correspondence of a die-cut area (4) thereof. The adhesive face (10) is formed with two side-by-side sections (10a, 10b) the first of which (10a) is intented to detachably overlay the wall (3) of the container (1) along the die-cut area (4), and the second of which (10b) is constituted by a bi-adhesive strip which is detachable from the label and intended to permanently adhere to the wall (3) of the container (1) in proximity of the die-cut area (4).
Abstract:
An opening device for sealed flexible containers (1), comprising a label (5) having an adhesive face (6) intended to be adhesively applied to the inner face of a wall (3) of the container (1) and incorporating a substantially central longitudinal strip (7) having an initial portion (10) constituted by a gripper tongue (10). The wall (3) of the container (1) is formed with an aperture, either a hole (4) or a partial cut (24) delimiting on the container wall (3) a tearing wing (25), so as to allow the gripper tongue (10) of the label (5) to be pulled outwardly thus performing tear breakage of the label (5) and the consequent tearing of the wall (3) of the container (1).
Abstract:
Described herein is a sheet support for digital photographic prints, which presents, along at least one of its borders (3), perforations (4) made at the origin for insertion of the sheet (1) into a ringed file-holder or the like. The perforations are normally closed by a protective adhesive strip (6), applied in a detachable way to the dorsal face (5) of the sheet, possibly on a reinforcement film made of thermoplastic material (7) provided in a position corresponding to the areas surrounding the perforations (4).