Patent ID: 7044184
Filing Date: 2006-05-16
Classification: B26D,B26F,B31B,Y10T

Abstract:
1. An apparatus for successively making plastic bags each of which has a shape of circumference, said apparatus comprising: web feeding means by which a web material is intermittently fed for a length along a longitudinal feeding path, said web material comprising two or more layers of plastic film; web cutting means disposed along said feeding path, said web cutting means having a shape corresponding completely or incompletely to the shape of circumference of plastic bag so that said web material can be cut into the shape of circumference of plastic bag by said web cutting means whenever said web material is intermittently fed and temporarily stopped, to successively make the plastic bags with a waste kept continuous; said web cutting means comprising partially cutting means, said plastic bag having an upstream edge along which said web material is cut partially by said partially cutting means so that said plastic bag can be kept connected with said waste at the upstream edge of plastic bag; said web cutting means further comprising totally cutting means, said plastic bag having other edges along which said web material is cut totally by said totally cutting means so that said plastic bag can be disconnected from said waste at other edges; drawing means disposed downstream of said cutting means and above said feeding path; waste guide means disposed downstream of said cutting means, said waste being engaged with and guided by said waste guide means to be diverged from said plastic bag, directed upwardly to and drawn by said drawing means after said web material is cut; and discharge means disposed downstream of said cutting means and waste guide means, said plastic bag being carried by said waste at the upstream edge of plastic bag so that said plastic bag can protrude toward said discharge means from said waste guide means to be directed to and pulled by said discharge means to be torn from said waste at the upstream edge of plastic bag, said plastic bag being then discharged by said discharge means.