Fan-folded sheet stock material support for use with a dunnage conversion machine and method

Patent metadata

Field	Value
Publication number	US-11911994-B2
Application number	US-202217742861-A
Country	US
Kind code	B2
Filing date	May 12, 2022
Priority date	Oct 27, 2016
Publication date	Feb 27, 2024
Grant date	Feb 27, 2024

Abstract

A supply of single-ply, fan-folded sheet stock material includes a holder that facilitates simultaneously loading multiple plies of sheet stock material into a dunnage conversion machine for conversion into a dunnage product. The holder has inclined support surfaces and intersecting support walls that support the support surfaces in their inclined orientations. The holder has a W-shape cross-section, with inclined outer support surfaces and inclined inner support surfaces that may meet in the middle. The inner support surfaces generally are perpendicular to adjacent outer support surfaces to support a generally rectangular stack and sub-stacks of single-ply, fan-folded sheet stock material. The inclined support surfaces of the holder facilitate splitting the stack in half and supporting the two sub-stacks so that pages on top of the two stacks, connected by a center fold line, can be drawn into the conversion machine simultaneously.

First claim

The invention claimed is:

1. A method for making a dunnage product from a two-ply stock material, comprising the following steps:
(a) laying open a stack of single-ply fan-folded sheet stock material to form two sub-stacks of sheet stock material;
(b) operating a dunnage conversion machine to simultaneously draw sheet stock material from both sub-stacks of sheet stock material, thereby providing a two-ply sheet stock material for conversion into a dunnage product;
wherein the stack of single-ply sheet stock material includes an upper portion and a lower portion, and the laying open step includes inverting the upper portion of the stack and displacing the upper portion from the lower portion, thereby forming the two sub-stacks of sheet stock material from the inverted upper portion of the stack and the lower portion of the stack.

2. A method as set forth in claim 1 , wherein the two sub-stacks of sheet stock material are connected by an intermediate portion, and the operating step includes drawing the intermediate portion into the dunnage conversion machine.

3. A method as set forth in claim 2 , wherein the operating step includes placing the intermediate portion of the sheet stock material adjacent a pair of rotating members in the dunnage conversion machine, and wherein the operating step includes rotating the pair of rotating members to draw the intermediate portion of the sheet stock material between the pair of rotating members.

4. A method as set forth in claim 1 , wherein the laying open step includes maintaining a continuous connection between the two stacks of sheet stock material during the laying open step.

5. A method as set forth in claim 1 , wherein the laying open step includes supplying a stack of single-ply sheet stock material that includes paper.

6. A method as set forth in claim 1 , wherein the operating step includes randomly crumpling the sheet stock material.

7. A method as set forth in claim 1 , wherein the operating step includes inwardly gathering the sheet stock material.

8. A method as set forth in claim 1 , wherein the operating step includes connecting overlapping layers of sheet stock material.

9. A method as set forth in claim 1 , wherein the laying open step includes supporting the two sub-stacks of sheet stock material in respective inclined orientations.

10. A method for making a dunnage product from a two-ply stock material, comprising the following steps:
(a) laying open a stack of single-ply fan-folded sheet stock material to form two sub-stacks of sheet stock material;
(b) operating a dunnage conversion machine to simultaneously draw sheet stock material from both sub-stacks of sheet stock material, thereby providing a two-ply sheet stock material for conversion into a dunnage product,
wherein the stack of single-ply sheet stock material includes an upper portion and a lower portion, and the laying open step includes inverting the upper portion of the stack and displacing the upper portion from the lower portion to form the two sub-stacks of sheet stock material, and supporting the two sub-stacks of sheet stock material in inwardly-facing, oppositely-inclined orientations.

Assignees

• Ranpak Corp

Inventors

• Cheich Robert C
• Stewartson Brian H

Classifications

• B31D5/0039 Primary

  for making dunnage or cushion pads · CPC title

• B65H1/28

  compartmented to receive piles side-by-side · CPC title

• B31D2205/0035

  as fan folded web · CPC title

• B31D2205/0047

  Feeding, guiding or shaping the material · CPC title

• B31D2205/0082

  General layout of the machinery or relative arrangement of its subunits · CPC title