The invention relates to a valve bag, in particular a cross-bottom valve bag, comprising a first wall and a second wall, which are joined to each other by means of side edges or side folds and by means of bottoms and which delimit a bag interior, comprising a valve, which is arranged in one of the bottoms and via which the bag interior can be filled with a filling material, and comprising venting openings in the first and/or in the second wall for venting the bag interior. At least one channel is provided on the outside of at least one wall, which channel covers the venting openings and is formed at least by two parallel fastening strips and by a cover strip, the cover strip likewise comprising venting openings, and wherein the shortest path between the parallel fastening strips along the cover strip is longer than the shortest path along the at least one wall or the cover strip, and/or the parallel fastening strips consist of stretchable material.

The present invention is a bag making machine (20, 30). The bag making machine (20, 30) includes: a conveying unit (37) which conveys a multi-layer film (S) in which films (13a, 13b) are overlapped; a side edge sealing device (27) which thermally fuses the films (13a, 13b) to each other; and an ultrasonic device (26) which crushes a part of a zipper member (14) disposed between films (13a, 13b). The side edge sealing device (27) includes: a platform (44); and a heat-generating head (45). The ultrasonic device (26) includes: an anvil (41); and an ultrasonic horn head (42). The heating-generating head (45) and the ultrasonic horn head (42) reciprocate at a same cycle via a link member (51).

The present disclosure relates to strata 2-ply drawstring trash bags implementing a J-flap extended hem to provide increased top-of-bag strength. In one or more embodiments, the J-flap extended hem includes a 2-ply web folded back on itself (e.g., during a hem folding operation to enclose the drawstring within a hem channel). In one or more implementations, a hem seal secures the 2-ply web to an inside surface of the trash bag. At least one ply of the 2-ply web fold-over extends past the hem seal and is additionally secured to the inside surface of the trash bag via one or more hem skirt seals. For reduced material consumption in certain embodiments, the J-flap extended hem of the present disclosure imparts added strength using only one ply of the 2-ply web fold-over. In some embodiments, at least one ply of the 2-ply web fold-over includes ring-rolled portions to add top-of-bag strength.

The present disclosure relates to a thermoplastic film that includes a plurality of ribs and a plurality of web areas that separate and connect the ribs. The thermoplastic film further includes an encapsulated odor control component that includes an odor control active encapsulated within a plurality of encapsulants. The encapsulants can be configured to delay a release of the odor-control active until activated. Further, the encapsulated odor control component can be applied across the plurality of ribs and the plurality of web areas, which can be configured to cause the encapsulants to activate in phases.

An additive application system utilized to form a padded mailer is provided, along with corresponding methods and systems. The system applies an additive liquid to a portion of a first web that, along with a second web, forms a panel of the padded mailer. After contact occurs, an internal pouch for the panel is formed. When the additive liquid and expandable adhesive positioned within the internal pouch are energized via an oven, the expandable adhesive expands in thickness within the internal pouch to form padding for the panel. Utilizing additive liquid enables use of less expandable adhesive while maintaining a desired speed of operation of the oven to still produce a desired thickness for the padding. Cooling may be applied after expansion in the oven to retain thickness expansion in the padding.

Multilayer Films have a first skin layer that is prepared from a high density polyethylene and a second skin layer (also referred to as the sealant layer) that is prepared from a linear low density polyethylene (LLDPE) having a density of from 0.90 to 0.92 g/cc and a Dilution Index, Yd, of greater than 0°. Seals can be prepared by placing two pieces of this film against each other such that the sealant layers are in contact with each other, then applying heat to at least one high density skin layer such that heat is transmitted/conducted through the multilayer film in a sufficient amount to melt the sealant layer and form a seal. The use of LLDPE having a Dilution Index of greater than 0° has been found to improve the sealing performance of multilayer films in comparison to multilayer films where the sealant layer is a conventional LLDPE having a Dilution Index of less than 0°.

A panel for a flexible package (100), and a method and system for forming the panel is provided. The panel comprises a first laminate having an open-area; a second laminate extending from a top edge to a bottom edge; and a third laminate, the third laminate sealed with the first laminate to cover the open-area, and the top edge and the bottom edge of the second laminate sealed between the first laminate and the third laminate such that area between the top edge and the bottom edge of the second laminate remains free forming a loop with the panel. The panel preferably forms a side-gusset (102) of a flexible packaging pouch, wherein the loop can be used as a handle (110) to carry the flexible package.

A thermoplastic bag includes duplicative seals. In particular, in one or more implementations, a thermoplastic bag includes a first seal and at least a second seal reinforcing the same area of the thermoplastic bag. For instance, in one or more implementations, the thermoplastic bag includes multiple seals along each side edge or along the hem. If one seal fails, the other seal(s) can remain in place to prevent leaks. Thus, the duplicative seals of the thermoplastic bag can provide reinforced strength and desired aesthetics.

A flexible packaging laminate is formed to have a built-in opening and reclose feature by forming the laminate as a two-part structure having an outer structure joined in face-to-face relation with an inner structure. Score lines are formed in both structures to enable an opening to be formed through the laminate by lifting an opening portion (e.g., a flap or the like) of the two structures out of the plane of the laminate. The score line through the outer structure defines a larger opening than the score line through the inner structure, such that a marginal region of the outer structure extends beyond the edge of the opening portion of the inner structure. A pressure-sensitive adhesive is used to re-adhere the marginal region to an underlying surface of the inner structure adjacent the opening through the laminate.

A bagger device is provided. The bagger device can include a bag handler configured to handle packaging material configured to define a bag that has first and second walls enclosing an interior cavity configured to contain an object therein for shipping, the first wall including an expansion material that has an expandable configuration and that is expandable to an expanded configuration for providing padding to the first wall to protect the object contained within the interior cavity. The bagger device can further include an expansion device configured to apply expanding conditions to the packaging material, the expanding conditions configured to cause the expandable material to expand from the expandable configuration to the expanded configuration.