Abstract: The invention relates to a bag (1) that comprises two substantially parallel sheets (12, 13) defining the main walls thereof, complementary closing profiles (2, 3) respectively attached to said sheets (12, 13), and a slider (5) for actuating the profiles (2, 3) upon opening or closing. The bag is characterised in that at least one of said sheets (12, 13) includes, on the outer face thereof, in the vicinity of the gripping area of the slider (5) and parallel to the movement direction of the latter, a strip-shaped bead defining a build up having a thickness and a width sufficient for locally modifying the deformability thereof.

Abstract: The present invention concerns a bag comprising a closing assembly (100) comprising two complementary elements (110, 120) supported by respective webs (112, 122) at least one of which is integral with a film (10) at a zone (114) located not superimposed on the corresponding closing element (110) in order to allow articulation of said web (112) on the film (10), characterized by the fact that the articulated web (112) extends beyond the closing element (110) such that upon engagement of the closing elements (110, 120), the end (115) of the articulated web (112) bears on a structure (20) opposite it.

Abstract: A slider chain including a plurality of sliders joined together by divisible bridging pieces (30), and including a linking device at each end in order to interconnect the ends of two slider chains so as to form a longer chain overall. The sliders include an attachment mechanism which is not of cylindrical revolution.

Abstract: The present invention relates to a fastener or closure assembly for fitting to a sheet or to the mouth of a packaging bag, and comprising at least one fastener or closure strip formed by a support web and a fastener or closure element carried by the web, the assembly including sequential cuts occupying a fraction of the width of the support web of the strip, outside the fastener or closure element and distributed over the length of the assembly in order to suppress the effects of warping, curving, or curling of the assembly.

Abstract: A packaging method includes the providing of a bag. A mouth of the bag may include an opening/closing for multiple successive openings and closings and a cleavable linking veil, located at a distance therefrom inside the bag in relation to the opening/closing. The method may also include introduction of contents to be wrapped in the bag and tightening of said bag in order to close it, with tension being applied to the contents. A veil may enter into contact with the contents to avoid the application of stress on the opening/closing, and guarantee free access to the contents via said opening/closing after tearing the cleavable linking veil. In one embodiment, free access to bag contents enables the bag to be relaxed in a closed state as a result of the distance (D) separating the veil and the opening/closing. The invention also relates to a packaging device and to bags thus obtained.

Abstract: A bag including two generally parallel sheets forming the main walls of the bag, complementary closure strips fixed to respective ones of the sheets, and a cursor for actuating the strips for closing and opening purposes. The bag further includes, parallel to the closure strips, between the sheets, and level with the mouth of the bag, additional structure in relief disposed on the insides of the closure strips, designed to provide sealing by forming a barrier between the sheets in the closed position of the bag, the additional structure in relief being placed facing the flanks of the cursor to be urged towards their sealing position by the cursor when the cursor is moved towards the sealing position.

Abstract: A method for the manufacture of packaging bags, which includes a step of forming at least one bag in a scrolling film, welding opening and closing zippers that include a series of operating sliders onto the scrolling film, and effecting at least one cut in the zippers, where the length of the cut is greater than the length of each slider.

Abstract: A method for manufacturing double ply packaging bags includes feeding a first packaging web, the first packaging web including a window patch that is cut out or pre-cut, feeding a second packaging web, the second packaging web including another window patch that is cut out or pre-cut, applying a fastener assembly to a fed-through packaging web, perpendicular to a window patch, attaching the fastener assembly to the packaging web, attaching the two packaging webs to each other to form a double ply web, and forming a double ply packaging bag with the double ply web. The double ply packaging bag has a front wall and a back wall, where the front wall and the back wall are each formed by the double ply web.

Abstract: The present invention provides a bag having closure strips and a slider, and including a marker strip for preventing manipulation of the slider prior to the marker strip being ruptured, wherein said marker strip is formed integrally with a wall of the bag and includes a single-use adhesive zone designed to fix it in its in-use position on the opposite wall of the bag.

Abstract: The invention relates to a method for manufacturing packs (1) characterized in that it comprises steps according to which: a packaging film is unwound; a first gusset is formed on the unwinding packaging film; a second gusset is formed on the unwinding packaging film, the second gusset being formed on the same edge of the unwinding film as the first gusset (3), said second gusset being associated with a closure assembly to form an opening indicator.

Abstract: A bag comprising two generally parallel sheets (16, 18) forming the main walls of the bag, complementary closure strips (20, 22) fixed to respective ones of the sheets, and a cursor (50) for actuating the strips (20, 22) for closing and opening purposes, the bag being characterized in that it further comprises, parallel to the closure strips (20, 22) between said sheets (16, 18), and level with the mouth (12) of the bag, a structure (100) disposed on the insides of the closure strips (20, 22), designed to provide sealing by forming a barrier between the sheets (16, 18) in the closed position of the bag, said structure (100) being placed facing the flanks (52, 54) of the cursor (50) to be urged towards their sealing position by the cursor (50) when the cursor is moved towards the sealing position.

Abstract: A method of automatically forming bags fitted with complementary closure strips secured to distinct support webs and associated with an actuating slide, in which method: at least one film suitable for forming the walls of the bags is supplied continuously; a closure assembly comprising complementary closure strips secured to distinct lateral support webs which extend beyond the closure strips is supplied continuously, the strips being associated with slides for actuating the closure strips, which slides are distributed along the length of the closure assembly as supplied; the closure assembly formed in this way is fixed via the external lateral support webs to the film forming the wall of the bags; the method being characterized in that: a loop is made in the continuously supplied film; and inside the concave portion of the loop the closure assembly is fixed to the surface of the film that corresponds to the outside surface of the bags.

Abstract: A bag including two generally parallel sheets forming the main walls of the bag, complementary closure strips fixed to respective ones of the sheets, and a cursor for actuating the strips for closing and opening purposes. Parallel to the closure strips between the sheets, and level with the mouth of the bag, additional sealing structure in relief disposed on the insides of the closure strips, designed to provide sealing by forming a barrier between the sheets in the closed position of the bag, the additional sealing structure in relief being placed facing the flanks of the cursor to be urged towards their sealing position by the cursor when the cursor is moved towards the sealing position.

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

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).