A method of making a storage bag comprising the following steps performed in any order: (a) forming a composite tube having an inner surface comprising a higher melting polymer, an outer surface comprising a lower melting polymer, two ends, and a diameter; (b) flattening the tube in a direction perpendicular to the diameter; (c) forming a joint at one of the ends at a temperature between respective melting points of the higher melting polymer and the lower melting polymer; (d) providing a composite sheet having a first side comprising a higher melting polymer and a second side comprising a lower melting polymer; and (e) disposing the composite sheet over the joint such that the first side comprising a lower melting polymer engages the joint and forming a lap seam over the joint at a temperature between respective melting points of the higher melting polymer and the lower melting polymer, and a storage bag made by such method.

Pouch including an insulation pad (100) including two juxtaposed cellulose-based sheets (110, 112) and a cellulose-based insulation material (120). The two juxtaposed cellulose-based sheets are laminated together with the cellulose-based insulation material located therebetween. The pouch further includes transverse fold lines (134) in the insulation pad. The pouch further includes two W-shaped folds (140) in the insulation pad. The two W-shaped folds are formed by folding the insulation pad along the transverse fold lines. Portions of a first longitudinal edge (116) of the insulation pad are coupled to each other between the two W-shaped folds in the insulation pad.

According to an aspect of the invention, provided is a bag-shaped container including a tubular film and at least one pair of engagement portions. The tubular film has an inner surface and an outer surface, and is folded in a manner that the outer surface configures both an inner surface of a bag body and an outer surface of the bag body. The at least one pair of engagement portions projects from the inner surface of the bag body, and engages with each other.

A system and method of manufacturing reinforced bags having reinforcing elements applied about the bags to support the bags in an opened and/or upstanding configuration. A web of bag material can be fed from a supply and can be folded and secured to form the bags. A series of reinforcing strips can be fed through an adhesive application station for application of an adhesive material thereto in a desired pattern. The reinforcing strips and bags are brought into registration and are adhesively attached to form the reinforced bags.

A pouch container has a gas filling space therein, and includes a first wall section and a second wall section. The first wall section includes a first tongue-shaped portion. The second wall section includes a second tongue-shaped portion and overlapping the first tongue-shaped portion. A projection length of the second tongue-shaped portion is longer than that of the first tongue-shaped portion. A gas injection portion is provided in which an injection port communicating with the gas filling space is formed by joining both end portions of both the first tongue-shaped portion and the second tongue-shaped portion in a width direction, and the injection port is defined by a tip end portion of the first tongue-shaped portion in a projection direction and the second tongue-shaped portion at a portion facing the tip end portion.

A shipping bag or sack having side gussets, an easy open double fold, and tightly sealed stepped ends is described that withstands internally forces at the easy open end during drop tests. The side gussets include a stepped feature that may be incorporated into polywoven, thermoplastic and paper bags. The bags further include a two step fold and seal process.

A method includes obtaining an elongated supply strip formed from an elongated profile body and an elongated flange and modifying portions of the profile body and/or the flange in different locations along a length of the supply strip to define termination ends of closure strips. The supply strip is separated into at least one of the closure strips at the termination ends. The flange in the closure strip is coupled to one or more panels of a resealable enclosure, and the panels are partially sealed to define an opening into the resealable enclosure. The profile body is configured to repeatedly couple with and decouple from itself to close and open the opening in the resealable enclosure. The panels are sealed to each other such that the ends of the closure strip are sealed between the panels.

Bags are made, with which a stack is formed. To do this, a tube is formed with a strip of flexible material, a portion of tube is separated at the front of the tube forming a first flap at the rear of the portion of tube, the first flap prolonging the first wall of the portion beyond the end of the second wall adjacent to the first wall, a bag is formed with each portion of tube, and a stack of bags is formed, the first wall of the first of the bags being against the second wall of the adjacent second bag. An anti-adhesive coating is applied on to the first wall of the first bag and a coat of adhesive is applied on to the second wall of the second bag ensuring the temporary attachment with the anti-adhesive coating.

A device and a method for applying cover sheets to cross-bottoms of tubular sections made of a plastic material. The device includes conveyor devices for transporting the tubular sections and for depositing the cover sheets on the cross-bottoms in a deposit area. The device includes a hot gas device with a gas heater and a nozzle connected to the gas heater and oriented toward the deposit area for the cover sheets so when gas is supplied to the gas heater, the gas flows along a flow path from the gas supply through the gas heater and the nozzle into the deposit area. The hot gas device has a hot gas reservoir with an internal volume for the temporary storage of hot gas, the flow path running through the hot gas reservoir. A gas mass flow ({dot over (m)}1, {dot over (m)}2, {dot over (m)}ges) of gas supplied to the gas heater is adjustable by a control.

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.