High elongation thermally bonded carded nonwoven fabrics
AssigneeFiberweb North America, Inc.
InventorsJacqueline A. Willey, William L. Cox
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Abstract
The invention provides high elongation thermally bonded nonwoven fabrics which exhibit elongation of at least about 130% in the cross-machine direction. The fabrics of the invention include a nonwoven a web of polyolefin staple fibers having an elongation of at least 400 percent, and a multiplicity of discrete thermal bonds throughout the web to provide a bond area of from 8 to 25 percent of the area of the fabric.
Claims13
A high elongation thermally bonded nonwoven fabric comprising a web of polyolefin staple fibers, said polyolefin fibers having an elongation of at least 400 percent, and a multiplicity of discrete thermal bonds throughout the web, said thermal bonds having a bond area of from 8 to 25 percent of the area of the fabric and bonding the fibers of the web to form a strong fabric having an elongation in the cross machine direction of at least 130 percent.
A high elongation thermally bonded nonwoven fabric comprising a web of polypropylene staple fibers, said fibers having an elongation of at least 400 percent, and a multiplicity of discrete thermal bonds throughout the web, said thermal bonds having a bond area of from 8 to 25 percent of the area of the fabric and bonding the lower melting sheath components of the fibers to form a strong fabric having an elongation in the cross machine direction of at least 130 percent, a basis weight of from 20 to 30 grams per square yard, a machine direction tensile strength of about 1400 to 2700 grams/inch and a cross machine direction tensile strength of about 400 to 800 grams/inch.
A process for producing a high elongation thermally bonded nonwoven fabric comprising:
- forming a nonwoven web of polyolefin staple fibers, said polyolefin fibers having an elongation of at least 400 percent;
- and
- forming a multiplicity of discrete thermal bonds throughout the web, said thermal bonds having a bond area of from 8 to 25 percent of the area of the fabric, to form a strong fabric having an elongation in the cross machine direction of at least 130 percent.
A process for producing a high elongation thermally bonded nonwoven fabric comprising:
- forming a nonwoven web of polypropylene staple fibers, said fibers having an elongation of at least 400 percent;
- and
- thermally bonding the fibers via a multiplicity of discrete thermal bonds throughout the web, said thermal bonds having a bond area of from 8 to 25 percent of the area of the fabric, to thereby form a strong fabric having an elongation in the cross machine direction of at least 130 percent, a basis weight of from 20 to 30 grams per square yard, a machine direction tensile strength of about 1800 to 2700 grams/inch and a cross machine direction tensile strength of about 400 to 800 grams/inch.
Dependencies are inferred from the claim text.