作者: Robert A. Ferrell
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摘要: Apparatus and method for making bag material from a continuous length of sheet. Side portions the sheet are turned opposite sides, advanced through joining station wherein extruded complementary separable fastener profile strips joined to face flange which directed away body The carrying may then be curing station. Subsequently strip assembly is conducted spreading spread apart. Downstream folded upon itself in folding profiles interengaged, wound into storage roll.