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

Patent metadata

Field	Value
Publication number	US-12037211-B2
Application number	US-201917290158-A
Country	US
Kind code	B2
Filing date	Oct 30, 2019
Priority date	Oct 31, 2018
Publication date	Jul 16, 2024
Grant date	Jul 16, 2024

Abstract

A supply ( 22 ) of sheet stock material ( 24, 34 ) for a dunnage conversion machine ( 26 ) that is readily spliced to another supply includes (a) one or more plies of sheet material ( 24, 34 ) having (i) multiple longitudinally-extending sections, including a center section ( 42 ) bounded by lateral sections ( 40 ), where the lateral sections ( 40 ) are folded over a common face of the center section ( 42 ) along longitudinal fold lines ( 44 ) at lateral edges of the folded sheet material, and (ii) a leading end ( 60 ) and a trailing end ( 62 ) at respective longitudinally-opposite ends of the sheet material, where the lateral sections ( 40 ) are separated from the center section ( 42 ) adjacent the leading end ( 60 ) and adjacent the trailing end ( 62 ) along respective lines of separation; and (b) a splicing adhesive ( 76 ) applied to the sheet material adjacent the leading end ( 60 ) or the trailing end ( 62 ) on both the center section ( 42 ) and each of the lateral WO 2020/092578 A1 sections ( 40 ) to facilitate splicing each section to respective sections of two supplies.

First claim

The invention claimed is:

1. A supply of sheet stock material for a dunnage conversion machine that is readily spliced to another supply, comprising:
(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 edge and a trailing edge at longitudinally-opposite ends of the sheet material; and
(b) a splicing adhesive including at least two discrete and separated splicing adhesive segments, each of the at least two splicing adhesive segments applied to the sheet material adjacent the leading edge or the trailing edge on only each of the lateral sections, respectively, such that each of the splicing adhesive segments extends beyond the adjacent leading edge or trailing edge in such a manner to facilitate splicing each section to respective sections of another supply of sheet stock material.

2. A supply of sheet stock material for a dunnage conversion machine as set forth in claim 1 , where the lateral sections are separated from the center section by a cut along respective longitudinal fold lines a distance of at least one centimeter.

3. A supply of sheet stock material for a dunnage conversion machine as set forth in claim 2 , where the lateral sections are separated from the center section by a cut along the respective longitudinal fold lines a distance of one centimeter to fifteen centimeters.

4. A supply of sheet stock material for a dunnage conversion machine as set forth in claim 1 , comprising two plies of sheet material.

5. A supply of sheet stock material for a dunnage conversion machine as set forth in claim 4 , where the lateral sections of both plies of sheet material are inwardly folded over a common face of the center section.

6. A supply of sheet stock material for a dunnage conversion machine as set forth in claim 1 , where the sheet stock material is folded along lateral fold lines in opposite directions at periodic longitudinally-spaced intervals to form a rectangular fan-fold stack.

7. A supply of sheet stock material for a dunnage conversion machine as set forth in claim 6 , where adjacent the leading end of the sheet material a leading segment is folded along the nearest lateral fold line to extend down a side of the stack, and adjacent the trailing end of the sheet material a trailing segment is folded along the nearest lateral fold line to extend up the same side of the stack, and a strap around the stack holds the leading and trailing segments against the side of the stack.

8. A supply of sheet stock material for a dunnage conversion machine as set forth in claim 1 , where at least one ply of sheet material includes kraft paper.

9. A supply of sheet stock material for a dunnage conversion machine as set forth in claim 1 , where the splicing adhesive is provided by a double-sided tape, one side of which is secured to the sheet material and the other side of which is covered by a removable release liner.

Assignees

• Ranpak Corp

Inventors

• Cheich Robert C
• Wagner Dennis J
• Stinard Brian
• Van Ool Hugo
• Hanssen Leon
• Timmers Mike

Classifications

• B31F5/06

  by adhesive tape · CPC title

• B31D2205/0035

  as fan folded web · CPC title

• B31D5/0039

  for making dunnage or cushion pads · CPC title

• B65H21/00

  Apparatus for splicing webs (during web-roll changing B65H19/00) · CPC title

• Y10T428/2419

  Fold at edge · CPC title