Spunlaid fibers comprising coated calcium carbonate, processes for their production, and nonwoven products
OwnerLarry H. McAmish, David A. Skelhorninventors
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Abstract
Disclosed herein are spunlaid fibers comprising at least one polymeric resin and at least one filler having an average particle size of less than or equal to about 5 microns and/or having a top cut of less than about 15 microns, wherein the at least one filler is present in an amount of less than about 40% by weight, relative to the total weight of the spunlaid fibers. Also disclosed herein is a method for producing spunlaid fibers comprising adding calcium carbonate to at least one polymeric resin and extruding the resulting mixture. Further disclosed herein are nonwoven fabrics comprising such spunlaid fibers and methods for producing them.
Claims36
A spunlaid fiber comprising at least one polymeric resin and at least one coated filler having an average particle size of less than or equal to about 3 microns, wherein the at least one coated filler is coated calcium carbonate and is present in the fiber in an amount less than about 40 wt %, relative to the total weight of the spunlaid fiber.
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A spunlaid fiber comprising at least one polymeric resin and coated calcium carbonate having a top cut of about 15 microns or less, wherein the coated calcium carbonate is present in the fiber in an amount less than about 40 wt %, relative to the total weight of the spunlaid fiber.
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A thermoformed spunlaid fiber comprising at least one polymeric resin and at least one coated filler having an average particle size of less than or equal to about 3 microns and having a top cut of about 15 microns or less, wherein the at least one coated filler is present in the fiber in an amount less than about 40 wt %, relative to the total weight of the thermoformed spunlaid fiber.
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Dependencies are inferred from the claim text.