Anti-weed sheet
OwnerSung Mo JUNGinventor
Life of this patent
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Abstract
Disclosed is an anti-weed sheet manufactured by forming webs. The web is formed of polyolefin-based staple fibers which are at least one selected from the group consisting of polyethylene staple fibers, polypropylene staple fibers, and polyisobutylene staple fibers. The sheet is bonded integrally by the needle punching by forming the webs, and the needle punching is performed in the order of pre-needle punching, low-speed needle punching, high-speed needle punching and low-speed needle punching to uniformly bridging the surface and the inside of the formed webs and improve a binding force. At least one surface of the sheet is modified by heat treatment through hot air or a heating drum.
Claims6
1-5. (canceled)
A method for manufacturing an anti-weed sheet manufactured by forming webs, comprising the steps of:
- (a) forming the web with a polyolefin-based staple fibers, wherein the polyolefin-based staple fibers comprising at least one selected from the group consisting of polyethylene staple fibers, polypropylene staple fibers or polyisobutylene staple fibers;
- and
- (b) forming the web on the sheet and integrally bonding by the needle punching;
- wherein the needle punching is performed in the order of pre-needle punching, low-speed needle punching, high-speed needle punching and low-speed needle punching to uniformly bridging the surface and the inside of the formed webs and improve a binding force, and
- wherein at least one surface of the sheet is modified by heat treatment through hot air or a heating drum.
Dependencies are inferred from the claim text.