Dunnage conversion system and method for expanding pre-slit sheet stock material

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United States of America Patent

PATENT NO 11787145
SERIAL NO

17531962

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Abstract

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A dunnage conversion system for expanding an unexpanded slit sheet stock material to form an expanded dunnage product. The dunnage conversion system includes a converging chute to inwardly gather laterally-extending edges of sheet stock material towards one another, causing random crumpling of the sheet stock material to form a modified ply. The conversion system also includes feed wheels that advance the modified ply through the converging chute and pinch rollers that cooperate with the feed wheels to expand the modified ply traveling between the feed wheels and the pinch rollers to form a dunnage product. The expanded dunnage product is expanded both in a longitudinal feed direction and in thickness as compared to the unexpanded slit sheet stock material, and thus is a three-dimensional product having increased volume and lower density per unit of length as compared to the unexpanded slit sheet stock material.

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Patent Owner(s)

  • RANPAK CORP.

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Cheich, Robert C Independence, US 55 527

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