Slit paper method of expansion, shipment and expansion devices
An expansion devise includes an unexpanded slit sheet roll that is wound on a paper core that is wider than the slit sheet paper. The paper core is placed into a yoke that holds the paper in position on each side of the unexpanded slit sheet material. An adjustable downward pressure is exerted on the paper core and the paper core exerts pressure on the yoke. As the paper is pulled, this downward pressure creates the Triton required to enable the unexpanded slit sheet to be unwind and fed while simultaneously expanding. A blank sheet is formed into a box that stabilizes slit paper sheet wound around a core member.
1. An expander device for manually expanding slit sheet paper, comprising:
a) a roll of slit sheet paper having an array of slits, said roll of slit sheet paper having a length from a first end of said roll of slit sheet paper to a second end of said roll of slit sheet paper;
b) said roll of slit sheet paper being wound around a tubular core member that extends through a center of said roll of slit sheet paper;
c) a pair of side wall members including a first side wall member and a second side wall member,
said first side wall member having a first support surface,
said second side wall member having a second support surface, and
said first side wall member and said second sidewall member being separated a distance from each other greater than said length of said roll of slit sheet paper to accommodate said roll of slit sheet paper in between said first side wall member and said second sidewall member;
d) a first end region of the tubular core member being adjacent the first end of said roll of slit sheet paper, and
a second end region of the tubular core member being adjacent the second end of said roll of slit sheet paper;
e) a pressing member having a curved surface positioned to press against a curved surface of said first end region of the tubular core member to apply a frictional resistance against said curved surface of said first end region of the tubular core member; and
f) a spring positioned to apply a spring force against said pressing member, wherein the spring is compressed against said pressing member to increase frictional pressure against said curved surface of said first end region of the tubular core member;
whereby the slit sheet paper can be manually drawn and expanded from the roll of slit sheet paper upon applying a manual drawing force upon said slit sheet paper that is sufficient to overcome the frictional resistance against said curved surface of said first end region of the tubular core member.
2. The expander device of claim 1 , wherein said first end region extends outwardly from the first end of said roll of slit sheet paper and is supported by said first support surface.
3. The expander device of claim 2 , wherein said first end region directly contacts said first support surface.
4. The expander device of claim 1 , wherein said roll of slit sheet paper is manually lowerable to be supported by said first support surface and said second support surface.
5. The expander device of claim 1 , further including a movable member that is movable to apply a pressure against said spring to adjust the spring force applied by the spring against said pressing member.
6. The expander device of claim 5 , wherein said movable member includes threads to adjust the spring force applied upon rotation of the movable member.
7. The expander device of claim 1 , further including a threaded member, wherein rotation of the threaded member in a first direction compresses the spring against said pressing member and increases frictional pressure against said first end region and rotation of the threaded member in a second direction decreases the frictional pressure against said first end region.
8. The expander device of claim 1 , wherein said pressing member is supported upon said first sidewall member.
9. The expander device of claim 8 , wherein said pressing member directly contacts said first sidewall member.
10. The expander device of claim 1 , wherein said pressing member is movably supported upon said first sidewall member.
11. The expander device of claim 10 , wherein said pressing member is movable toward and away from said curved surface of said first end region to increase and decrease the frictional pressure against said curved surface of said first end region.
12. The expander device of claim 1 , wherein said curved surface of said pressing member includes a radius of curvature substantially equal to a radius of curvature of said curved surface of said first end region.
13. The expander device of claim 12 , wherein said curved surface of said first end region that is pressed against by the pressing member rotates around a center axis of said roll upon applying the manual drawing force upon said slit sheet paper that is sufficient to overcome the frictional resistance against said first end region.
14. The expander device of claim 1 , wherein said curved surface of said pressing member (i) abuts against said curved surface of said first end region that is pressed against by the pressing member and (ii) does not rotate along with said curved surface of said first end region upon applying the manual drawing force upon said slit sheet paper that is sufficient to overcome the frictional resistance against said first end region.
15. The expander device of claim 1 , wherein said first end region includes a first protrusion that extends outwardly from the first end of said roll of said slit sheet paper by at least ¼ inch and said second end region includes a second protrusion that extends outwardly from said second end of said roll of slit sheet paper by at least ¼ inch.
16. The expander device of claim 15 , wherein said first protrusion extends outwardly from the first end of said roll of said slit sheet paper by at least ½ inch and said second protrusion extends outwardly from said second end of said roll of slit sheet paper by at least ½ inch.
17. The expander device of claim 16 , wherein said first protrusion extends outwardly from the first end of said roll of said slit sheet paper by less than 2 inches and said second protrusion extends outwardly from said second end of said roll of slit sheet paper by less than 2 inches.
18. The expander device of claim 1 , wherein said support surface of said first sidewall member is formed in a first opening in said first sidewall member that extends through a top edge of said first sidewall member.
19. The expander device of claim 18 , wherein said second support surface of said second sidewall member is formed in a second opening in said second sidewall member that extends through a top edge of said second sidewall member.