Totani Corporation

Yuji Ohnishi

Toshiki Nagasawa

Hiroshi Nagata

Shoichi Sawada

First and second panel webs are superposed on each other and fed in their longitudinal direction. After a side gusset is temporarily fixed to the second panel web, the side gusset is divided by a dividing device to form a pair of open edges. The open edges are aligned with a line of weakness of the first panel web when the first and second panel webs are superposed on each other. The side gusset is temporarily sealed to the first and second panel webs by a temporary seal device to form temporary sealed sections. The first panel web is guided to be divided along its line of weakness and to be folded on the sides of its division edges. This guiding of the panel web and the temporary sealed sections cause the side gusset to be opened at the open edges to form open surfaces. An end face web is then disposed on the panel web to be superposed on folded parts of the panel web and the open surfaces of the side gusset.

Bag making apparatus and bag making method

The product efficiency of bags each with an end face part is increased. A panel webs is guided to be divided along a line of weakness of the panel web and to be folded along division edges of the panel web. This guiding of the first panel and temporary sealed sections cause a side gusset to be cut open along a line of weakness of the side gusset such that open surfaces are formed. After the forming of the open surfaces, an end face web is supplied to be superposed on folded parts of the panel web and the open surfaces of the side gusset.

Bag making method and bag making apparatus

A first feed device adjusts an intermittent feed amount thereof based on output of a first sensor such that a design position of a first panel is aligned with a first fixing position during every pause phase of an intermittent feed cycle. A second feed device adjusts tension of a second panel and an intermittent feed amount of a feed unit based on output of at least one second sensor such that a design position of the second panel is aligned with a second fixing position during every pause phase of an intermittent feed cycle. A third feed device adjusts an intermittent feed amount thereof based on output of a third sensor such that the design position of the first panel is aligned with the second fixing position during every pause phase of an intermittent feed cycle.

Alignment device

A defect detecting device includes a detection unit and a movement mechanism. The detection unit includes a support, an arm supported by the support swingably around a swing shaft, and a sensor for detecting a displacement of the arm relative to the support. The arm includes contactors. The movement mechanism keeps the contactors away from a feed plane during a feed phase of a sheet panel, and moves the contactors to the feed plane and then moves the contactors from the feed plane during a pause phase of the sheet panel. The defect detecting device further includes a determination part configured to determine whether a defect in bag making is present based on data from the sensor.

Defect detecting device and bag making apparatus

A head seal device of a bag making apparatus includes a pair of seal units configured to face each other in a facing direction. Each of the seal units includes a heat seal member and a heater. The heat seal device includes an adjustment unit configured to move the first seal unit in a width direction of continuous sheet panels, and to move the second seal unit in the width direction of the sheet panels in accordance with movement of the first seal unit in the width direction.

Heat seal device

A plastic film punching apparatus is improved to prevent a wastefrom being caught in a cylindrical punch blade. The apparatus includes a punch bladecomprising a saw-toothed edge which includes mountain portions and valley portions formed alternately with each other. A protrusionis disposed internally of the punch bladeto protrude beyond the position of height Hof the bottomsof valley portions and toward the position of height Hof the topsof mountain portions. An annular clearanceis formed between the punch bladeand the protrusion

Plastic film punching apparatus

In an apparatus for successively making plastic bags, a receiver plateis fixed to a support plateThe support plateextends widthwise of the webs of film materialH andL to protrude on one of opposite sides of the webs of film materialH andL. An elastic support device is disposed on the one side of the webs of film materialH andL to elastically support the receiver plateand the support plateAn attitude hold device is disposed on the one side of the webs of film materialH andL to act on the support plateso that the receiver plateand the support plateare held in attitude not to be inclined when being lowered and raised.

Plastic bag making apparatus

First and second bodies of fastener materialandadvance in a first direction which is an advancing direction, the advancing direction being changed into a second direction. A pair of turn over barsandare spaced from each other, the first and second bodies of fastener materialandadvancing in the first direction to be engaged with the turn over barsand. The first and second bodies of fastener materialandare then inserted between and turned over by the turn over barsandwith the advancing direction being changed into the second direction.

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Kyoto, Japan

Yuji Ohnishi