Device for making bags

作者： H Heinzer

DOI:

关键词: Structural engineering 、 Tube (container) 、 Sheet material 、 Geology 、 Composite material

摘要: A device for making bags is provided with an upright forming tube over which a tubular structure made of flexible sealable sheet material moved downwardly step-by-step to be at its lower end, when projecting freely from the bottom by means seam dies during interval upwardly while clamped against movement. Subsequently, double gripper seizes folded margins and pulls then bag so formed severed structure.