Interfolder with pre-forming transfer roll

Details Interfolder with pre-forming transfer roll Interfolder with pre-forming transfer roll

2005-10-07

2008-12-02

Desai, Hemant M (Department: 3721)

Manufacturing container or tube from paper; or other manufacturi

Bending

Folding

C493S360000, C493S403000, C493S424000, C270S039010, C270S039050, C270S032000

Reexamination Certificate

active

07458927

ABSTRACT:
An interfolding apparatus including a knife roll, a first interfolding roll, a second interfolding roll, and a transfer roll. The knife roll cuts sheets from a stream of web material issuing from a source in a downstream direction. The first interfolding roll is positioned downstream of the knife roll and receives the sheets. The first interfolding roll rotates in a first direction and the second interfolding roll rotates in a second direction. The first and second interfolding rolls interfold the sheets with additional sheets received by the second interfolding roll. A transfer roll is positioned between the knife roll and the first interfolding roll. The transfer roll has a non-uniform surface configuration and rotates in the second direction and receives the sheets from the knife roll, forms a bend in each of the sheets, and transfers the formed sheets to the first interfolding roll.

REFERENCES:
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patent: 6010122 (2000-01-01), Weber
patent: 6024685 (2000-02-01), Kirsch
patent: 6165116 (2000-12-01), White
patent: 6179764 (2001-01-01), Eckert

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