CPC B31B 70/988 (2017.08) [B31B 70/62 (2017.08); B65D 33/001 (2013.01); B65D 33/1691 (2013.01); B31B 2150/003 (2017.08); B31B 2150/10 (2017.08); B31B 2160/102 (2017.08); B31B 2170/10 (2017.08)] | 6 Claims |
6. A machine for manufacturing flexible bags including a tube-forming device for forming a tube from a strip of flexible material, a separation device for separating a portion of the tube at a front of the tube while forming a first flap to a rear of the portion of the tube, the first flap prolonging a first wall of the portion of the tube beyond an end of a second wall adjacent to the first wall, a bag-bottom forming device for forming a bag with each portion of the tube by closing a front of the portion of the tube, and a stacking device for forming a stack of bags, the first wall of a first bag of the stack of bags being against a second wall of an adjacent second bag, the machine comprising a first means of application for applying an anti-adhesive coating on to the first wall of the first bag, and a second means of application for applying a coat of adhesive-to the anti-adhesive coating before the formation of the stack, and the coat of adhesive is transferred on to the second wall of the adjacent second bag when the stack is formed.
|