This invention relates to a paper bag for bulk material such as cement, gypsum, granular material, animal feed or the like, with a bottom and with an upper part opposite the bottom, wherein bottom and/or upper part are folded and glued by closing up the side parts around side fold lines, in particular in the form of a cross or block bottom, wherein for gluing the side parts at least one gluing or bonding agent activatable after the application is provided, which is applied continuously at least from a side fold line up to at least the opposite side fold line of the side parts.

A method of making a one piece, leak proof container for holding and transporting hot melt asphalt. The container is made from a sheet of heavy duty cardboard which is coated on one side, folded and glued to create a leak proof container. The sheet has a series of pre-scored fold lines to allow the sheet to be folded into a container with a leak proof bottom. A series of reinforcing sheets are added to the bottom of the container to provide reinforcement, and to create the leak proof base.

The instant invention relates to a device for the application of adhesives directly on the structure of bags and shopping bags manufactured in automatic machines for packaging conformation, allowing the application liners or coating adhesive strips during the production process of the shopping bag itself.

A packaging bag has a bag body formed from a flat web and has a first front wall and a second front wall as well as a stand-up bottom formed in a bottom section by folding and gluing the front walls. The flat web has a varnish coating on an outside of the bag body, wherein the first front wall has an adhesive region free of the varnish coating in the bottom section of the bag body.

A multi-layer thermoplastic film include a first film of thermoplastic material, a second film of thermoplastic material bonded to the first film, and an odor control component disposed between the first film and the second film. A method of manufacturing a multi-layer thermoplastic film coextruding a plurality of layers to form a first film, coextruding a plurality of layers to form a second film, disposing at least one odor control component on at least one of the first film and the second film, and bonding the first and second films together such that the at least one substance is disposed between the first film and the second film.

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.

A crop storage bag (1) made is of a high-strength textile (7) material which is extrusion-coated or laminated with a multilayer film (8) that comprises an insecticidal layer (9) in addition to a hermetic layer (10) which prevents oxygen from entering the bag. This oxygen barrier suffocates the insects inside the bag, and the insecticide kills insects that try to bore through the bag.

Envelopes include a cover for covering and isolating a closure sealing element on the envelope before the envelope is loaded and sealed. The cover can be formed as part of an adjacent wall of the envelope, and can be separated from the wall by a cut or a line or weakness between the cover and the wall.

A method of producing flexible polypropylene fabric bags with heat fused seams comprising providing fabric pieces, wherein each fabric piece has a coated side and an uncoated side; positioning fabric pieces so that a coated side of one fabric piece faces a coated side of another fabric piece; selecting an area of fabric to be joined for forming a seam or joint; applying heat to the area to be joined that is less than the melting point of the fabrics, for forming one or more seams or joints and wherein the heat fused seams or joints of a resulting polypropylene bag retains at least 85% of the fabric strength without using sewing machines.

The present application discloses a paper packaging bag with a ziplock, which comprises two bag sheets formed by folding a paper material, a ziplock, and two paper connecting strips. The side edges of the two bag sheets are connected to form a containing cavity; the ziplock is fixed at an opening of the containing cavity via the two paper connecting strips. Wherein, each paper connecting strip comprises a paper strip, a hot-melt adhesive layer and a film layer. The hot-melt adhesive layer is used for hot-press bonding with the bag sheets, and the film layer is used for hot-press bonding with the ziplock. The paper packaging bag with a ziplock realizes the combination of the ziplock and the paper bag by means of the paper connecting strips, thereby improving the usage convenience of the paper packaging bag and achieving better environmental protection.