Patent ID: 6648808
Filing Date: 2003-11-18
Classification: B26D,B26F

Abstract:
An apparatus for making plastic bags from a web material comprising two or more layers of plastic film, said apparatus including feeding means by which said material is intermittently fed for a length along a longitudinal feeding path, and heat seal means by which said material is heat sealed whenever intermittently fed and temporarily stopped, to successively make plastic bags with wastes, each of said wastes having upstream and downstream edges, said apparatus comprising:partially cutting means disposed at a first station predetermined along said feeding path, said material being partially cut by said partially cutting means along said upstream and downstream edges of waste whenever intermittently fed and temporarily stopped; waste removing means disposed at a second station predetermined downstream of and at a distance from said first station, said waste reaching said second station when said material is intermittently fed again after partially cut by said partially cutting means; and discharge means disposed at a third station predetermined downstream of and at a distance from said second station, said material reaching said third station when intermittently fed again after partially cut by said partially cutting means, said material being pulled and torn by said discharge means from said downstream edge of waste to be discharged by said discharge means as a plastic bag, said waste being pulled, torn and removed by said waste removing means from said upstream edge of waste, after said waste reaches said second station and said material reaches said third station.