Web expander
AssigneeNippon Petrochemical Co., Ltd.
InventorMasahiro Harashige
Life of this patent
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Abstract
This invention provides a web expander comprising means for carrying a web 2 having longitudinal slits, means 5 for expanding the width of the web, and opening control means 6 for uniformly forming size and form of openings of the web expanded by said means for expanding. The means 5 for expanding the width consists of a flat expander 15 and two pairs of cloth guider 21, and opening control means 6 comprises two expander rolls 31 as a rotatable ribbed roll, the ribbed roll being adapted to be applied to one side of the traveling net-like web to rotate in the direction in which the net-like web 2 is reduced in width.
Claims14
A web expander comprising means for carrying a traveling web having longitudinal slits, means for expanding the width of the traveling web to expand the slits thereby forming openings, and opening control means for uniformly forming the size and shape of said openings of the web expanded by said means for expanding, said opening control means comprising a rotatable ribbed roll having a plurality of ribs formed on its circumference, the ribbed roll being adapted to be applied to one side of the traveling web to rotate in the direction in which the web is reduced in width.
Dependencies are inferred from the claim text.