Method and apparatus for scarfing fibrous substrates

Plastic and nonmetallic article shaping or treating: processes – With severing – removing material from preform mechanically,... – Surface finishing

Reexamination Certificate

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Details

C264S518000, C264S138000, C425S080100, C425S083100, C425S289000

Reexamination Certificate

active

10954821

ABSTRACT:
An apparatus for scarfing a fibrous web includes a rotatable scarfing roll with vacuum ports and an air moving source in fluid communication with the vacuum ports. The rotatable scarfing roll has a core member which includes a plurality of scarfing elements connected thereto and vacuum ports located therein. A method for scarfing a fibrous web includes providing a rotatable scarfing roll with vacuum ports and reducing scarfing wind by applying vacuum to the vacuum ports. A method for producing absorbent articles includes providing a fibrous web, contacting the fibrous web with a rotatable scarfing roll with vacuum ports to remove a portion of the fibrous web, applying vacuum to the vacuum ports to reduce scarfing wind, and producing an absorbent article with the fibrous web.

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patent: 4927582 (1990-05-01), Bryson
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patent: 6630088 (2003-10-01), Venturino et al.
patent: 2002/0153634 (2002-10-01), Kugler et al.
patent: 2004/0098838 (2004-05-01), Venturino et al.

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