Device for biaxially stretching film
- 申请公布号:
- US4679283(A)
- 申请号:
- US19850728880
- 申请日期:
- 1985.04.30
- 申请公布日期:
- 1987.07.14
- 申请人:
- E. I. DU PONT DE NEMOURS AND COMPANY
- 发明人:
- FORREST, JR., ALBERT W.
- 分类号:
- B65H20/16;B29C55/10;B29C55/16;B65H23/028;F16H19/02;(IPC1-7):D06C3/04
- 主分类号:
- B65H20/16
- 摘要:
- A device is disclosed for a variable speed carrier with power input from a chain drive to a sprocket on the carrier and power output to cones affixed to the sprocket and running on a pair of rails of variable spacing.
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