Method of forming a plastic film construction

申请公布号：US4674999(A)

申请号：US19850735655

申请日期：1985.05.20

申请公布日期：1987.06.23

申请人：

ETHYL CORPORATION

发明人：FRANCIS, MICHAEL A.

分类号：A01G9/14;B65H45/09;(IPC1-7):B31F1/00

主分类号：A01G9/14

摘要：A method of folding large sheets of tubular plastic film or slit tubular plastic film wherein the longitudinal edges of the plastic film are folded back over a surface of the film about 180 DEG to an imaginary longitudinal line drawn substantially through the center of a surface of the film and then forming the so-folded sheet into a roll and a roll of greenhouse film folded in the foregoing manner.

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