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US 6,640,490 B1Granted
Plant protection mat, especially in the form of a perforated disk
OwnerEberhard Boehringerinventor
Life of this patent
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Abstract
A plant-protection mat, particularly in the form of a perforated disk which, in the use position above the root bale of a plant, is intended as soil covering. The perforated disk is formed from a coconut fiber nonwoven having coconut fibers bonded by latex. The coconut fibers of the perforated disk, on the one hand, are fixed by way of contour-forming stiffening edges and, on the other, the perforated disk in the region of the upper and lower covering zones, has pore structures with different opening widths.
Claims7
A method of producing a plant-protection mat, comprising:
- obtaining coconut fibers;
- arranging said coconut fibers in a layer in such manner that relatively short coconut fibers are concentrated at a bottom of said layer and relatively long coconut fibers remain in a greater proportion in an upper position of said layer;
- applying a latex mixture to said layer of coconut fibers as a binder to form a non-woven coconut fiber sheet;
- and
- forming a mat body of specified shape from said non-woven coconut fiber sheet prior to curing of the latex, said step of forming including cutting a mat body having a desired peripheral contour and pressing at least an area portion of said mat body.
2 more elements
Dependencies are inferred from the claim text.