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    • 5. 发明申请
    • PURE LAYERED STRETCH FILM PRODUCED USING SINGLE PASS EXTRUSION RESINS
    • 使用单次挤出树脂生产的纯薄膜拉伸薄膜
    • WO2017020037A1
    • 2017-02-02
    • PCT/US2016/044998
    • 2016-08-01
    • PARAGON FILMS, INC.
    • BAAB, Michael, John
    • B29C55/06B29D7/00
    • B29C39/203B29C39/24B29C39/26B29C39/38B29C55/06B29C69/001B29C2791/003B29C2793/0036B29D7/00B29L2007/008
    • Methods for producing a stretch film are provided, including disposing one or more extruders in fluid communication with a stock of virgin resin; heating the virgin resin to a molten state; delivering the molten virgin resin to a die; and extruding the molten virgin resin through the die onto a casting roll, thereby creating a cast stretch film. Methods for delivering the molten virgin resin onto a casting roll of varying sizes and set temperatures; and of moving a resulting film onto a secondary chill roll of varying sizes and set temperatures, are also provided. Finally, methods for moving the film from either the casting roll or the secondary chill roll onto a slitting assembly, dividing the film using one more interior or exterior slits, and then capturing and gathering the trim waste but not reintroducing the trim waste back into the production process are also disclosed.
    • 提供拉伸膜的制造方法,包括将一个或多个挤出机配置成与原始树脂的原料流体连通; 将原始树脂加热至熔融状态; 将熔融的原始树脂输送到模具; 并将熔融的原始树脂通过模头挤出到铸辊上,从而形成铸塑拉伸膜。 将熔融原始树脂输送到不同尺寸和设定温度的铸辊上的方法; 并且还提供将所得膜移动到变化尺寸和设定温度的次级冷却辊上。 最后,将膜从铸辊或次级冷却辊移动到分切组件上的方法,使用一个或多个内部或外部狭缝分割膜,然后捕获和收集修整废料,但不将修整废料重新引入到 还公开了生产过程。