| 摘要 |
In an apparatus for making plastic bags from a web material comprising two or more layers of plastic film, the material is intermittently fed for a length along a longitudinal feeding path, to successively make plastic bags with wastes, each of the wastes having upstream and downstream edges. The apparatus includes partially cutting means disposed at a first station predetermined along the feeding path. The material is partially cut by the partially cutting means along the upstream and downstream edges of waste whenever intermittently fed and temporarily stopped. The apparatus further includes waste removing means disposed at a second station predetermined downstream of and at a distance from the first station. The waste reaches the second station when the material is intermittently fed again after partially cut by the partially cutting means. In addition, the apparatus includes discharge means disposed at a third station predetermined downstream of and at a distance from the second station. The material reaches the third station when intermittently fed again after partially cut by the partially cutting means. The material is pulled and torn by the discharge means from the downstream edge of waste to be discharged by the discharge means as a plastic bag, the waste being pulled, torn and removed by the waste removing means from the upstream edge of waste, after the waste reaches the second station and the material reaches the third station.
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