Abstract: A bag equipped with matching closure profiles. The bag is made from a supply of at least a film for forming the bag walls. A supply is unwound of closure assemblies having a W-shaped support sheet, constituting an inner U-shaped tear band provided on its inner surfaces opposite respectively matching closure profiles. External side webs extend beyond the closure profiles and the U-shaped inner band. The closure assembly is further pre-equipped with a series of sliders actuating the closure profiles distributed over the length of the unwinding closure assembly. The resulting closure assembly is fixed by the external side support webs on the film forming the bag wall.

Abstract: A closure strip and a cursor of a bag. The bag including an indicator tape situated on the path of the cursor and designed to be ruptured when the bag is opened for the first time.

Abstract: A machine for forming reclosable packaging includes a removable forming neck which can be replaced with different forming necks of various diameters. The machine has a mechanism (40) for attaching closure strips (P) onto a film that have lengths up to half the circumference of the smallest forming neck (10), and a mechanism (60)″ that makes the transverse welds (61, 62) along a length equal to at least equal half the circumference of the largest forming neck (10).

Abstract: The invention relates to a method for manufacturing packs (1) characterised in that it comprises steps according to which:

Abstract: A method of manufacturing packages based on a film (10) and presenting at least one peelable zone, the method being characterized by the fact that it comprises the steps which consist in feeding segments (20) of strip or tape of peelable material on a film (10) that is to form the wall of the package, in flattening at least the ends of each segment (20), and in fixing each segment (20) of peelable material to the film (10). The invention also provides a machine for implementing the method, and packages obtained thereby.

Abstract: The present invention relates to a bag having closure profiles combined with a slider (20), characterized in that an end weld (3) made between the closure profiles is shaped according to a geometry which is the complement of the slider (20).

Abstract: The present invention relates to a method of automatically manufacturing bags fitted with complementary closure strips associated with an actuating cursor, in which at least one film adapted to form the bag walls is fed continuously, closure assemblies comprising complementary closure strips associated with an actuating cursor are provided, and each closure assembly made in this way is fixed on the wall-forming film, wherein the closure assemblies are brought onto the film transversely to the travel direction of said film, and the length of each closure assembly is greater than the width of the bag, such that, while it is being brought into position, the actuating cursor is located in the vicinity of one end of the closure assembly beyond the edge of the film.

Abstract: A method for automatically making bags equipped with matching closure profiles comprising the steps of: unwinding a supply of at least a film for forming the bag walls; unwinding a supply of closure assembly comprising a W-shaped support sheet, constituting an inner U-shaped tear band provided on its inner surface opposite respectively the matching closure profiles, and the external lateral webs extending beyond the closure profiles and the U-shaped inner band, the closure assembly being further pre-equipped with a series of sliders actuating the closure profiles distributed over the length of the unwinding closure assembly; and fixing the resulting closure assembly via the external lateral webs on the film forming the bag walls.

Abstract: A method for automatically making bags equipped with matching closure profiles, including unwinding a supply of at least a film for forming the bag walls and unwinding a supply of closure assemblies having a W-shaped support sheet, constituting an inner U-shaped tear band provided on its inner surfaces opposite respectively matching closure profiles, and external side webs extending beyond the closure profiles and the U-shaped inner band. The closure assembly being further pre-equipped with a series of sliders actuating the closure profiles distributed over the length of the unwinding closure assembly, and fixing the resulting closure assembly, by the external side support webs on the film forming the bag wall.

Abstract: A method for automatically making bags equipped with matching closure profiles, including unwinding a supply of at least a film for forming the bag walls and unwinding a supply of closure assemblies having a W-shaped support sheet, constituting an inner U-shaped tear band provided on its inner surfaces opposite respectively matching closure profiles, and external side webs extending beyond the closure profiles and the U-shaped inner band. The closure assembly being further pre-equipped with a series of sliders actuating the closure profiles distributed over the length of the unwinding closure assembly, and fixing the resulting closure assembly, by the external side support webs on the film forming the bag wall.

Abstract: The present invention relates to a method of manufacturing bags including complementary closure strips, the method comprising the steps consisting in: separately feeding a film and closure strips having sequential thin zones at the same pitch as the bags; and fixing the strips to the film; the method further comprising the steps consisting in: detecting loss of synchronization between the closure strips and means acting in the assembly station; and in the event of loss of synchronization being detected, modifying the size of the sequential thin zones provided in the strips so as to reestablish synchronization. The present invention also relates to a machine for implementing the method, and to the bags obtained thereby.

Abstract: The invention relates to a method of manufacturing packaging bags with side gussets comprising steps which consist in forming cutouts in the sheet of the bag, placing closure means (70) between two associated cutouts, forming side gussets, bringing the edges (14, 16) of the sheet together, wherein the cutouts open onto a transverse generatrix (18) of the sheet which corresponds to the top of a respective bag.

Abstract: A bag which includes additional closing profiles which are respectively actuated by a slide during opening and closing. The bag includes a wall portion which forms a veil which can be broken and which is designed in such a way that it covers the slide before the bag is used.

Abstract: The invention relates to a set of at least three consecutive bags (2) in a succession, each bag having two closure strips (6) and a cursor (8) situated at a respective distance (d1, d2) from one end (10a) of the strips (6), the strips and the cursor being identical between the bags. Between the bags in each pair of adjacent bags, the said distances (d1, d2) are different.

Abstract: The present invention relates to a method of manufacturing packaging bags having lateral bellows, the method being characterized by the fact that it comprises the steps consisting in: forming respective cutouts (150, 160) in each of the two lateral, bellows-forming zones of a packaging bag sheet (100) so that the bag has only two thicknesses superposed at the mouth of said bellows, at least over a portion of its width; and heat-sealing (184, 186) the adjacent edges of the sheet to the peripheries of the cutouts (150, 160) to close the bag. The invention also provides apparatus for implementing the method and bags obtained thereby.

Abstract: The present invention relates to a method of manufacturing packaging bags having lateral bellows, the method being characterized by the fact that it comprises the steps consisting in: forming respective cutouts (150, 160) in each of the two lateral, bellows-forming zones of a packaging bag sheet (100) so that the bag has only two thicknesses superposed at the mouth of said bellows, at least over a portion of its width; and heat-sealing (184, 186) the adjacent edges of the sheet to the peripheries of the cutouts (150, 160) to close the bag. The invention also provides apparatus for implementing the method and bags obtained thereby.

Abstract: A set of at least three consecutive bags in a succession, each bag having two closure strips and a cursor situated at a respective distance (d1, d2) from one end of the strips, the strips and the cursor being identical between the bags. Between the bags in each pair of adjacent bags, the distances (d1, d2) are different.

Abstract: The present invention relates to a method of manufacturing packaging bags having lateral bellows, the method being characterized by the fact that it comprises the stepsof forming respective cutouts (150, 160) in each of the two lateral, bellows-forming zones of a packaging bag sheet (100) so that the bag has only two thicknesses superposed at the mouth of said bellows, at least over a portion of its width; and heat-sealing (184, 186) the adjacent edges of the sheet to the peripheries of the cutouts (150, 160) to close the bag. The invention also provides apparatus for implementing the method and bags obtained thereby.

Abstract: The present invention provides a bag comprising two generally parallel sheets forming the main walls of the bag, complementary closure strips fixed to respective ones of said sheets in the vicinity of the mouth of the bag, and a cursor having two side flanges interconnected by a web, the flanges being placed on the outsides of the sheets at the mouth of the bag and co-operating with a central elongate tongue to define two converging passages for the complementary closure strips, wherein the tongue is interrupted so as to be set back from the longitudinal end of the cursor, in particular at the wider end of the cursor corresponding to the diverging ends of the passages, and wherein side flanges are provided in the vicinity of their free edges remote from the web with urging means for urging the sheets of the bag towards each other, said means occupying the entire longitudinal extent of the tongue and extending longitudinally beyond each end thereof so as to ensure that the bag is leakproof when it is in its cl

Abstract: The present invention relates to a method of manufacturing packaging bags having lateral bellows, the method being characterized by the fact that it comprises the steps consisting in: forming respective cutouts (150, 160) in each of the two lateral, bellows-forming zones of a packaging bag sheet (100) so that the bag has only two thicknesses superposed at the mouth of said bellows, at least over a portion of its width; and heat-sealing (184, 186) the adjacent edges of the sheet to the peripheries of the cutouts (150, 160) to close the bag. The invention also provides apparatus for implementing the method and bags obtained thereby.