A device for opening an end region of a bag body, which end region extends between an open tube body end and a bottom central line, having a transporting device, on which the bag body is transportable with adjacent tube walls at a transport rate (V) in a transporting direction, and suction devices arranged on both sides of the bottom central line, which are driven so as to be moveable transversely back and forth to the transporting direction, wherein the suction devices are movable in addition in the transporting direction back and forth. The suction devices are mounted at first articulated joints, wherein at each first articulated joint there are hinged two pivoting arms pivoting relative to one other, wherein each pivoting arm is pivotingly connected to a positioning pivoting arm by means of a second articulated joint and wherein each positioning pivoting arm is movably driven.

A bag mouth opening device for continuously conveyed bags including suction cups (16, 17) continuously rotated in mutually opposite directions along substantially symmetrical elliptical moving paths (24, 25) on ether side of a conveying path (1) for bags. The time the suction cups take to make their single rotation along the moving paths matches the time a bag (20) takes to be conveyed for an inter-bag distance(s). The major axes (26, 27) of both moving paths of the suction cups are inclined at almost the same angles relative to the conveying path and digress from the bag conveying path toward their anterior side.

According to some illustrative embodiments, a protective product is provided that includes: at least one expandable slit paper sheet, said at least on expandable slit paper being expanded between opposing ends of said slit paper; a first embossed paper sheet facing said expanded slit paper sheet and a second paper sheet facing an opposite side of said at least one expanded slit paper sheet, at least one of said first embossed paper sheet and said second paper sheet being fixed to said expanded slit paper sheet at the opposing ends of said expanded slit paper sheet and thereby maintaining said expanded paper in its expanded state, said first embossed paper sheet having a plurality of embossings that increase the rigidity of said embossed paper sheet, whereby inhibiting deformation of said embossed paper sheet that is fixed to said expanded slit sheet paper.

A bag opening apparatus and a bag opening method capable of efficiently opening a bag body in a short period of time are provided. A bag opening apparatus includes a gap formation unit which bends at least a front wall portion, of the front wall portion and a back wall portion that constitute a mouth portion of a bag body, so as to form a gap. When a first press drive member presses a first holding unit against the front wall portion, a contact part of the first holding unit is swung against urging force of an urging part of the first holding unit to bend the front wall portion.

A breathable bag (1) especially suitable for packaging horticultural products (2) comprising a mesh casing (3), which is capable of housing the products to be packaged and at least one first band (5) of flexible material applied on the outside of and joined to the casing by affixed areas (6, 7) affixed to said casing, the first band covering a region (8) of the casing that has a hole (9), the practical access to the hole (9) being prevented by the affixed joining areas (6, 7) between the first band (5) and the casing (3), and the first band (5) being equipped with at least one tear line (10) that determines in the first band (5) a removable portion (5c) from the casing (3) that is sufficient to leave uncovered or to open a practical access to said opening (9).

A triangle sandwich packaging machine includes paired grips for holding vicinities of both sides of a bag mouth of a triangle sandwich packaging bag, a mover intermittently moving the paired grips in every one of packaging stations, and a spatula inserting mechanism for forming a crest on the triangle sandwich packaging bag held by the paired grips to shape an opening. Also provided is a triangle sandwich packaging method including a moving step of intermittently moving the paired grips holding the triangle sandwich packaging bag in every one of the packaging stations, an opening step of opening the triangle sandwich packaging bag into a sectorial shape and a spatula inserting step of forming a crest on the triangle sandwich packaging bag held by the paired grips to shape an opening and inserting a spatula for shaping the opening.

A plastic bag opening device, which opens an inlet of a plastic bag having a pocket shape, includes an elevating member that lifts the plastic bag in a state in which a first surface of the plastic bag is adhered; and an air blower that injects air toward the inlet of the plastic bag adhered to the elevating member so that the inlet of the plastic bag is opened. Accordingly, the inlet of the plastic bag may be completely opened.

A packaging machine has at least one carriage including a carriage body defining an internal passage dimensioned to receive a packaging sleeve, the internal passage extending along a passage axis with a passage sidewall extending therearound. A retention mechanism is configured to retain the packaging sleeve against the passage sidewall, one or more packaging subsystems are configured to perform an operation on the packaging sleeve, and a drive mechanism is configured to move the carriage to and from the packaging subsystem. Opposite ends of the internal passage along the passage axis can both be completely open from the passage axis to the passage sidewall. The retention mechanism can be configured to retain the packaging sleeve with vacuum. The packaging subsystem can include one or more of a sleeve infeed device, a sleeve spreader device, an indexing device, and a sealing device.

A method and device for opening spout attachment portion of a bag being set up such that films on both sides of a spout attachment portion (2) of a bag (1) are suction-held up by a pair of suction cups (8), and the spacing between the pair of suction cups is widened to open the spout attachment portion, after which a gas is blown from the spout attachment portion into the bag by a gas blowing member (9); and when the gas is blown into, a clamping member (19) clamps a position under the gripper that is on the top edge (6) side of the bag from both sides of the bag, thus suppressing outflow of the gas blown into the bag from the top edge, thus allowing entire bag to inflate for its entirety substantially and the spout attachment portion to be kept opened.

A bag forming apparatus for forming a flat bottom of a bag includes a base, opposing sidewalls that extend upright relative to the base, and a top that is operably coupled to an upper portion of each of the sidewalls. The top has an intermediate pivot axis between the sidewalls that enables the top to pivot about the pivot axis between a collapsed state and an expanded state. In the collapsed state, the upper portions of the respective sidewalls are closer together and the top extends upright relative to the base to form a tip for insertion into an opening of the bag. In the expanded state, the upper portions of the respective sidewalls are spaced further apart and the top extends horizontally relative to the base to form a platform for forming the flat bottom of the bag.