Ranpak Corporation

Mike J Timmers

Raimond P M Demers

Richard O Ratzel

Robert C Cheich

Joseph J Harding

Michael J Lencoski

Dennis J Wagner

Thomas E Manley

Dan Coppus

Raimond Demers

Erwin Methorst

Erwin Riga

Pierre H G Kobben

Brian J Stinard

Kurt K&uuml;ng

Hugo Van Ool

Leon Hanssen

Serge H L C Pluymaekers

Livio Marchioni

Rogers P M Rinkens

Jos Saive

A supply () of sheet stock material () for a dunnage conversion machine () that is readily spliced to another supply includes (a) one or more plies of sheet material () having (i) multiple longitudinally-extending sections, including a center section () bounded by lateral sections (), where the lateral sections () are folded over a common face of the center section () along longitudinal fold lines () at lateral edges of the folded sheet material, and (ii) a leading end () and a trailing end () at respective longitudinally-opposite ends of the sheet material, where the lateral sections () are separated from the center section () adjacent the leading end () and adjacent the trailing end () along respective lines of separation; and (b) a splicing adhesive () applied to the sheet material adjacent the leading end () or the trailing end () on both the center section () and each of the lateral WO 2020/092578 A1 sections () to facilitate splicing each section to respective sections of two supplies.

Supply of sheet stock material for a dunnage conversion machine and a method of converting same into a dunnage product

A machine for converting a sheet stock material into a relatively less dense dunnage product includes both (a) a helical pre-form assembly having a cylindrical mandrel with a longitudinal axis and a guide member for guiding the sheet stock material from a supply thereof into a helical path along and around the mandrel so as to form a helical pre-form that rotates around the longitudinal axis and advances parallel to the longitudinal axis; and (b) a restriction in the path of the pre-form that slows the advance and rotation of the pre-form past the restriction, the restriction causing the pre-form to retard longitudinal advancement, to twist upon itself, and to permanently deform as it moves past the restriction, thereby longitudinally and helically crumpling the pre-form.

Dunnage conversion machine, helically-crumpled dunnage product and method

A dunnage conversion machine () and corresponding method for converting a supply of sheet stock material into a relatively less dense dunnage product includes a conversion assembly () that converts sheet stock material into a dunnage product, and a tension-adjusting assembly () having a sequence of transversely extending members () disposed upstream of the conversion assembly (). The transversely extending members () engage the stock material and help to prevent or to minimize excessive edge tension and/or the tearing associated therewith, while maintaining sufficient tension for proper tracking, especially for the conversion of single ply, lesser quality and/or short fiber paper, and/or otherwise improves or enhances the conversion process. The transversely extending members () are generally aligned end-to-end, and define a path for the stock material from a supply thereof, via a stock supply assembly () to the conversion assembly ().

Dunnage conversion machine and method

A cushioning conversion machine ( ) comprising a conversion assembly ( ) which converts a sheet stock material into a three-dimensional strip of cushioning. The conversion assembly ( ) includes a forming assembly ( ) that forms the stock material into a strip of stock material. The forming assembly ( ) comprises an external forming device ( ) and an internal forming device ( ). The internal forming device ( ) includes interacting and/or mandrel portions ( ) which internally interact with lateral portions of the strip of stock material to internally reshape the cross-sectional geometry of the strip.

Cushioning conversion machine and method

A cushioning conversion machine (,) including a converting assembly (,) which converts a sheet-like stock material (,) into a strip (,) having at least one pillow-like portion (,) and another portion (,), and a severing assembly (,) which severs the leading section of the strip (,) to form a cushioning pad (,). The cushioning conversion machine,is characterized by a pad-transferring device (,) which transfers the cushioning pad (,) away from the severing assembly (,) by applying a transferring force to the cushioning pad (,) that is concentrated at the other portion (,) of the cushioning pad (,). The other portion (,) of the cushioning pad is preferably a compressed portion, a connecting portion which maintains the geometry of the pillow-like portion, and/or a central portion.

Cushioning conversion machine and method with pad transferring device

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Landgraaf, Netherlands

Mike J Timmers