AG-wafer product and method of making same

• US 8,020,342 B2
• Filed: 02/08/2007
• Issued: 09/20/2011
• Est. Priority Date: 02/10/2006
• Status: Active Grant

• Current Assignee: LSC Mat, LLC
• Original Assignee: Mat Incorporated
• Inventors: Karpik, Joseph
• Primary Examiner(s): Palo; Francis T
• Application Number:
  US11/703,914
• Publication Number:
  US 20070283620A1
• Time in Patent Office: 1,685 Days
• Field of Search: 47/59.S, 47/581.SC
• US Class Current: 47/9
• CPC Class Codes: A01G 13/0262 Mulches, i.e. covering material not-pre-formed in mats or sheets A01G13/0281 takes precedence; composition of mulches C09K17/52
• CPC Class Codes: Y02A 40/28 specially adapted for farming

Abstract

A compressed wafer mulch, the compressed wafer mulch including corn stover fibers, paper fibers, compost or a mixture thereof, and a method of making the same.

Claims

1. A mulch comprising:

a compressed wafer, said wafer comprising fibers, said fibers comprising;

corn stover fibers; and

paper fibers.

2. The mulch of claim 1 further comprising compost.

3. The mulch according to claim 1, wherein about 50% to about 60% of said fibers have a length between about 0.25 inches and about 0.50 inches.

4. The mulch of claim 3 wherein said compost is selected from the group consisting of yard waste, straw, hay, manure and mixtures thereof.

5. The mulch of claim 3, said mulch comprising about 25% compost.

6. The mulch of claim 3, further comprising a binder in an amount of about 1% to about 5%.

7. The mulch of claim 6, the mulch comprising about 3% binder, about 25% paper fibers and about 73% corn stover fibers.

8. A mulch comprising:

a compressed wafer, said wafer comprising;

fibers and compost, said fibers comprising;

corn stover fibers.

9. The mulch of claim 8 wherein said compost is selected from the group consisting of hay, manure, wood fibers, straw, leaves, grass clippings and mixtures thereof.

10. The mulch of claim 8 said mulch comprising about 25% compost and about 75% corn stover fibers.

11. The mulch according to claim 10, wherein about 50% to about 60% of said fibers have a length between about 0.25 inches and about 0.50 inches.

12. A method of making mulch, the method comprising the steps of:

providing corn stalk material;

defibrating the corn stalk material to form corn stover fibers;

mixing the corn stover fibers with at least one member selected from the group consisting of paper fibers and compost or both, and mixtures thereof into a mulch;

pelletizing the mulch; and

compressing the pelletized mulch into a wafer.

13. The method of claim 12 further comprising mixing with said corn stover fibers, at least one member selected from the group consisting of polymers, tackifying resins, bonding fibers, waxes, wetting agents, colorants, perfumes, inoculants, preservatives, fire retardants, synthetic fibers, other natural fibers, acetate, rayon, cotton, leather, wool, coconut, kanaffe, jute and mixtures thereof.

14. The method of claim 12, said mulch comprising compost, said compost comprising at least one member selected from the group consisting of soy bean straw, oat hulls, alfalfa, yard waste, dairy waste and mixtures thereof.

15. The method of claim 12 wherein said defibrating is thermomechanical.

16. The method of claim 12 wherein said method is a substantially dry method of making said wafer.

17. The method of claim 16 wherein said corn stover fibers have a moisture content of less than about 25% by weight of said corn stover fibers.

18. The method of claim 17 wherein said corn stover fibers have a moisture content of about 10% by weight to about 15% by weight of said corn stover fibers.

19. The method of claim 16, said mulch comprising about:

about 50 wt-% to about 75 wt-% corn stover fibers;

0 wt-% to about 50 wt-% compost;

0 wt-% to about 25 wt-% paper fibers; and

0 wt-% to about 5 wt-% polymer;

wherein said compost, said paper fibers or both are not less than 25 wt-% of the total compressed wafer.

20. The method of claim 19, said mulch comprising about 20 wt-% to about 30 wt-% compost.