Abstract: A system for end-folding a wrapping onto a stack of bags includes a folding machine having a first folding station and a second folding station. The first folding station configured to receive the stack of bags with the wrapping partially covering the stack of bags and defining wrapping flaps, and is further configured to end-fold one or more of the wrapping flaps of the wrapping onto the stack of bags while leaving other flaps unfolded. The second folding station is downstream from the first folding station is configured to receive the stack of bags from the first folding station and further end-fold unfolded wrapping flaps of the wrapping onto the stack of bags.

Abstract: A system for end-folding a wrapping onto a stack of bags includes a folding machine having a first folding station and a second folding station. The first folding station configured to receive the stack of bags with the wrapping partially covering the stack of bags and defining wrapping flaps, and is further configured to end-fold one or more of the wrapping flaps of the wrapping onto the stack of bags while leaving other flaps unfolded. The second folding station is downstream from the first folding station is configured to receive the stack of bags from the first folding station and further end-fold unfolded wrapping flaps of the wrapping onto the stack of bags.

Abstract: A system for end-folding a wrapping onto a stack of bags includes a folding machine having a first folding station and a second folding station. The first folding station configured to receive the stack of bags with the wrapping partially covering the stack of bags and defining wrapping flaps, and is further configured to end-fold one or more of the wrapping flaps of the wrapping onto the stack of bags while leaving other flaps unfolded. The second folding station is downstream from the first folding station is configured to receive the stack of bags from the first folding station and further end-fold unfolded wrapping flaps of the wrapping onto the stack of bags.

Abstract: A self-opening style bag formed of a tube with a bottom constructed of folded-inward-portions of side walls and overlying portions of front and rear walls, all folded around a perimeter fold line. The tube provides adhesive strips on portions of the bottom region of the tube to assemble the bottom of the bag wherein at least the front wall and rear wall have transverse adhesive strips applied adjacent the fold line and edge strips along edges in the bottom region. The side walls have adhesive applied along bottom edges thereof. Alternately a heat sealable material is applied over an inside surface of the bag and local heating is used to effect seals. When the side walls are folded inward, they are sealed at all seams in the bottom of the bag to prevent small articles from becoming trapped between seams.

Abstract: A self-opening style bag formed from a paper tube of rectangular configuration wherein portions of the side walls are folded inward to form a bottom and thereafter are surrounded by folded over portions of the front and rear walls to complete the bottom. Front and rear flaps are cut into the front and rear panels and adhesive is applied to inside surfaces of the front and rear walls in a C-shaped configuration around said flaps, folding the side walls and portions of the front and rear walls inwardly forms a seal across the width of the bottom along the front and rear walls and a seam is formed between the folded over portion of the side panels which completes a sealed integrity of the bottom of the bag.

Abstract: A flat-bottom bag is provided having a folded bottom. Improved adhesive patterns are provided on the bag prior to folding. The bag has a generally planar front wall, a generally planar rear wall which is substantially parallel to the front wall, and a pair of gussetted side walls connecting said front and rear walls. A pair of adhesive patterns are provided, one on an interior of the front wall and one on an interior of the rear wall. Each of the adhesive patterns has a pair of squares. A pair of first flap extensions are provided. Each first flap extension has a pair of overlapping triangular sections. The triangular sections are formed by a folding over of the front wall and the rear wall such that each square is folded over diagonally so that the adhesive pattern will overlie itself. Additional adhesive strips secure the first flap extensions to the bottom. This arrangement provides a securing of all interior edges of the folded bottom.

Abstract: Method and apparatus for packaging articles in a heat-shrinkable film. The packaging assembly includes a rotary drive means and a plurality of radial arms engagable with the drive means. An article handling apparatus consisting of a lower platen and an upper, pressure-applying platen is carried by each arm. At a loading station, a stack of the articles to be packed is compressed to a predetermined amount and a heat-shrinkable bag is applied about the package. The compressed package with the heat-shrinkable bag is then engaged with the drive means and then is directed through a heating tunnel and cooling station where it is heated and cooled for a sufficient time and at a sufficient temperature to cause the bag to shrink around the still compressed stack holding it to a positive fixed repeatable height dimension while leaving an opening in the bag at the top. The thus enclosed stack is then sent to a discharged station where it is delivered to a conveyor means or other suitable stack-handling means.