A bag making apparatus and a bag making method make bags. The bag has a first panel part and a first flap part formed by folding a first sheet part, and a second panel part and a second flap part formed by folding a second sheet part. The first and second panel parts face each other. The first and second flap parts are interposed between the first and second panel parts and face each other. An open edge is formed by folded edges of the first and second sheet parts. The bag further comprises adhesive located between the open edge and the engagement tool, interposed between the first and second flap parts and extending across the widths of the first and second sheet parts to peelably adhere the first and second flap parts to each other. Alternatively, the second sheet part may only consists of the second panel part.

A rotary-type film folding machine comprises a feeding mechanism providing a tubular material for a folding mechanism in an axial direction, with a first driving mechanism driving the feeding mechanism to operate; a folding mechanism folding the tubular material delivered by the feeding mechanism, with a second driving mechanism driving the rotation of an outer sheath of the folding mechanism; a pressing mechanism pressing the tubular material folded by the folding mechanism, with a third driving mechanism driving the rotation of a first inner rotor for rotating the pressing mechanism and the folding mechanism; said pressing mechanism being driven by a fourth driving mechanism to move up and down; and the operations of the first, second, third and fourth driving mechanisms are controlled by a controller.

A fixture mounting assembly facilitates efficient and convenient mounting of lighting fixtures and like elements on various types of ceiling mounting components. In one embodiment, the mounting assembly in configured to readily adjustable in length, with the adjustable nature of the assembly facilitating versatile use by permitting convenient adjustment of the assembly to accommodate different, typically standardized spacing of the mounting components. In this embodiment, the assembly includes first and second, inner and outer channel members arranged in sliding, telescopic relationship. The channel members define and arrangement of openings and slots to facilitate fitment to different types of ceiling mounting components. The telescoping nature of the channel members facilitate their fitment to associated ceiling mounting components which may have different, standardized spacing. Efficient and versatile use desirably offers significant savings in time and installation costs for fixture installation. In alternative embodiment, a fixture hanger assembly includes a pair a substantially identical channel members configured for efficient fitment to so-called hard-lid/hat-rack ceiling components.

The present invention is directed to a method forming a bottom-gusseted package, wherein each package includes an inwardly-extending, pleat-like gusset at the bottom of the package. To permit heat-sealing formation of each package, the sleeve from which each gusset is formed comprises a lamination of two differing polymeric materials, so that only an exterior surface of each sleeve exhibits the desired heat-sealing characteristics. To facilitate package formation, the sleeves from which the bottom gussets are formed are maintained in a temporarily closed or sealed configuration during package formation by providing a preferably frangible bond or seal at the edge of each sleeve. This result is preferably achieved by folding the laminate material, and temporarily sealing or joining an outer layer of the laminate material from which gusset is formed, while an inner layer is maintained in an unsealed condition.

A forming unit for a packaging machine comprises a conveyor for a flexible packaging material along a conveying direction; a forming assembly activatable on the flexible packaging material, and configured to shape it along a forming direction transverse to said conveying direction to form a package; an adjustment associated with the forming assembly and configured to move it nearer and/or farther away along the forming direction, so as to adjust a transversal dimension of the package.

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.

The provided are a four side seal packaging bag and a preparation device and method thereof. The preparation device includes at least: a film material conveying mechanism, configured to continuously convey a film material of a packaging bag along a length direction of the film material; a folding mechanism, configured to fold the film material conveyed by the film material conveying mechanism; a cutting mechanism, configured to cut the upper film material; punch-and-cut mechanisms, configured to form square punch-and-cut regions and separate the square punch-and-cut regions from the side accordion film materials; a side accordion forming mechanism, configured to perform a forming operation on the side accordion film materials; and a hot-sealing mechanism, configured to hot-seal the upper film material, the formed side accordion film materials, and the lower film material.

Packaging machine that includes a frame, a feed module configured to supply a film, a fold forming module configured to receive the film and for generating at least one longitudinal fold in said film, actuation means with a first actuator to cause the movement of the feed module with respect to the frame, and with a second actuator for moving the forming module with respect to the feed module. A control unit is configured to cause, while the film is being supplied, the first actuator to move at least the feed module with respect to the frame and the second actuator to move the forming module at least with respect to the feed module.