Cross cut device, bag making apparatus, and cross cut method

A cross cut device for use in bag making and for shearing a web twice during a pause phase of an intermittent feed cycle, the cross cut device comprising:

• a cutter pair including an upper blade and a lower blade;
• a feed device for intermittently feeding a web in a longitudinal direction of the web;
• a vertical movement device for vertically reciprocating the upper blade with respect to the lower blade to shear the web;
• and
• a horizontal movement device for horizontally moving the cutter pair between a first position for first shearing and a second position for second shearing, the second position being spaced upstream of the first position,
• wherein the horizontal movement device is configured, during the reciprocation of the upper blade for the second shearing, to start to move the cutter pair from the second position to the first position subsequent to the upper blade reaching a lowermost height and prior to the upper blade exceeding a shear height, and
• wherein the feed device is configured to start to feed the web subsequent to the cutter pair starting to move from the second position to the first position.