A thermoplastic bag includes raised rib-like elements that allow the thermoplastic bag to expand. The thermoplastic bag further includes side seals having rib-like elements that allow the side seals to expand. Additionally, in one or more implementations, the thermoplastic bag includes one or more of a material formulation, a density of raised rib-like elements, a height of raised rib-like elements, or land areas that provide the raised rib-like elements with a reduced rebound ratio.

A reinforced multilayer material includes a mesh material covered on at least one side, and possibly both, by a layer of a resinous film material. The mesh material includes filaments that intersect one another, at least some of the filaments being composite filaments having a carrier portion of a relatively high melting point and a bonding portion of a relatively low melting point, the bonding portion of each composite filament being thermally bonded to other filaments at least some points of intersection. The multilayer material has a mass per unit area of less than 9.0 oz/yd.sup.2 and at least one of a) a bursting strength to mass per unit area ratio of at least 9.0 lbs./(oz/yd.sup.2), where bursting strength is measured in accordance with ASTM-D37 86 and b) a breaking elongation of at least 5% in the warp direction when breaking elongation is measured in accordance with ASTM-5034. A bag is provided that is made at least in part from a multilayer material having at least some of the characteristics described above.

A packaging bag has a bag body on a paper basis, which has front walls that lie opposite one another, side walls arranged between the front walls, and longitudinal edges that connect the front walls with the side walls. A material section that forms the assigned front wall and a material section that forms the assigned side wall, are connected with one another on the longitudinal edges to form a reinforcement fold that runs in the longitudinal direction, by way of a fixation layer that borders on each longitudinal edge. The fixation layer assigned to at least one of the reinforcement folds is an adhesive layer, wherein regions of the bag body between the reinforcement folds are free of an adhesive layer.

A bag has a front panel, a back panel, and a gusset, each having a thermoplastic ply at its interior face. The interior face of the gusset is thermally welded to the interior face of the front panel and back panel at respective joins from which extend respective panel extensions which are also thermally welded to each other at a third join. Extensions of the gusset cover parts of the respective panels and are thermally welded to them. Other parts of the panel extensions are not covered by the gusset extensions and are welded to each other to form the third join. The extensions can form a handle part for the bag.

A flexible container comprising a multilayer structure which comprises a barrier layer; a sealing layer, and a third layer between the barrier and sealing layers which comprises a foamed polyolefin, wherein the container includes crease lines formed by localized thermal compaction of the foamed polyolefin is provided. Also provided is a method of making a flexible container.

A sheet material container includes a container body that surrounds a containing portion for accommodating a content. The container body is formed of a container body-forming sheet member formed by layering a plurality of base material films. The container body-forming sheet member includes the plurality of base material films, an attaching layer by which the base material films are attached to each other, and a filler enclosed portion that is formed between the plurality of base material films and into which a filler is to be filled. The plurality of base material films are made from the same type of resins.

A fruit and vegetable anti-fog packaging bag, which is produced with a polypropylene multilayer film, is manufactured by a high-speed bag making machine.

A woven laminated plastic bag having an easy open feature is provided. The easy open feature is generally defined by a weakened portion in the bag. In various aspects the bag can be fabricated from a woven polyethylene layer which can be laminated with a polyethylene film layer, can form a pinch bottom bag, and can have one or both sides include graphics and/or printing. The bag can also provide a top end and/or a bottom end either or both of which provide a discrete area which may contain discrete graphics and/or printing.

A kraft sack is disclosed for products to be packed and stored in dust and granule forms such as chemical, food, mine, construction and building industry products. The kraft sack was manufactured to prevent from possible odour transition and humidity creation from and into package inside and outside of dust and granule raw materials, and provides protection thereof in order to maintain physical and chemical features of product against interior and exterior factors, against dusting that could occur during evacuation of air through perforation holes over kraft sacks during process of filling the kraft sack.

A woven laminated plastic bag having features that further prevent leakage of contents out of the bag, or infestation of organisms into the contents of the bag is provided. In various aspects the bag can be fabricated from woven polypropylene and/or polyethylene layer which can be laminated with a film layer, can form a pinch bottom bag, and can have one or both sides include graphics and/or printing. The bag can also provide a top end and/or a bottom end either or both of which provide a discrete area which may contain discrete graphics and/or printing. The bag can also include a tape covered easy open feature that facilitates removal of tightly adhered sealing tape.