The present disclosure is directed to a wiping product well suited to absorbing a solvent and releasing the solvent onto an adjacent surface. The wiping product can also be constructed so as to have excellent abrasion resistance. The wiping product can be used in numerous applications and is particularly well suited for wiping unfinished surfaces, such as metal surfaces and composite surfaces for removing contaminants, such as oil and grease. The wiping product is made from a hydroentangled and thermally bonded web containing staple fibers and conjugated fibers.

The invention provides polymer-grafted and functionalized nonwoven membranes adapted for use in bioseparation processes, the membranes including a nonwoven web of polyester fibers having an average fiber diameter of less than about 1.5 microns, each of the plurality of polyester fibers having grafted thereon a plurality of polymer segments constructed of a methacrylate polymer, each polymer segment carrying a functional group adapted for binding to a target molecule. The invention also provides a method of bioseparation comprising passing a solution comprising the target molecule, such as a protein, through the nonwoven membrane of the invention such that at least a portion of the target molecule in the solution binds to the nonwoven membrane. A method for preparing a polymer-grafted and functionalized nonwoven membrane adapted for use in bioseparation processes is also provided.

The invention provides polymer-grafted and functionalized nonwoven membranes adapted for use in bioseparation processes, the membranes including a nonwoven web of polyester fibers having an average fiber diameter of less than about 1.5 microns, each of the plurality of polyester fibers having grafted thereon a plurality of polymer segments constructed of a methacrylate polymer, each polymer segment carrying a functional group adapted for binding to a target molecule. The invention also provides a method of bioseparation comprising passing a solution comprising the target molecule, such as a protein, through the nonwoven membrane of the invention such that at least a portion of the target molecule in the solution binds to the nonwoven membrane. A method for preparing a polymer-grafted and functionalized nonwoven membrane adapted for use in bioseparation processes is also provided.

The present invention provides a thermal insulation filling material and preparation method thereof and a thermal insulation product, and pertains to the field of thermal insulation filling materials. The thermal insulation filling material of the present invention includes: a bulk fibre; and a spherical fibre assembly, where a water-repellent layer is formed on a surface of the bulk fibre and of the spherical fibre assembly, and a weight ratio of the bulk fibre to the spherical fibre assembly is between about 30:70 and about 70:30. The thermal insulation filling material is good in wash durability, and has comprehensive performance such as better blowable processability, quick-drying property, compression-resilience property, and thermal insulation property, etc. The method for preparing the thermal insulation filling material includes: adding a water-repellent agent in the process of gas-flow mixing the bulk fibre and the spherical fibre assembly, and then heating to form a water-repellent layer on the surface of the bulk fibre and of the spherical fibre assembly.

The present invention provides a thermal insulation filling material and preparation method thereof and a thermal insulation product, and pertains to the field of thermal insulation filling materials. The thermal insulation filling material of the present invention includes: a bulk fibre; and a spherical fibre assembly, where a water-repellent layer is formed on a surface of the bulk fibre and of the spherical fibre assembly, and a weight ratio of the bulk fibre to the spherical fibre assembly is between about 30:70 and about 70:30. The thermal insulation filling material is good in wash durability, and has comprehensive performance such as better blowable processability, quick-drying property, compression-resilience property, and thermal insulation property, etc. The method for preparing the thermal insulation filling material includes: adding a water-repellent agent in the process of gas-flow mixing the bulk fibre and the spherical fibre assembly, and then heating to form a water-repellent layer on the surface of the bulk fibre and of the spherical fibre assembly.

A fiber sheet is densely charged with electric charge and provides an electret fiber sheet that has excellent dust collecting performance. The electret fiber sheet is an electret fiber sheet in which averages of a* values and b* values satisfy all requirements of the following (a) to (c): (a) 10average of (a* values)40; (b) 25average of (b* values)0; and (c) 5average of [(a* values)+(b* values)]40; wherein a* and b* are values measured by a spectrophotometer when a red positive charge toner and a blue negative charge toner are attached.

A fiber sheet is densely charged with electric charge and provides an electret fiber sheet that has excellent dust collecting performance. The electret fiber sheet is an electret fiber sheet in which averages of a* values and b* values satisfy all requirements of the following (a) to (c): (a) 10average of (a* values)40; (b) 25average of (b* values)0; and (c) 5average of [(a* values)+(b* values)]40; wherein a* and b* are values measured by a spectrophotometer when a red positive charge toner and a blue negative charge toner are attached.

A spunbond non-woven fabric for a filter has high rigidity and air permeability as well as excellent dust brush-off performance. The spunbond non-woven fabric for a filter includes a composite polyester fiber containing a low melting point polyester arranged in the vicinity of a high melting point polyester, the low melting point polyester having a melting point 10 to 140 C. lower than the melting point of the high melting point polyester, the composite polyester fiber having a single fiber fineness of not less than 1.5 dtex and less than 5.0 dtex, the spunbond non-woven fabric having a basis weight of 150 to 300 g/m.sup.2, an apparent density of 0.25 to 0.40 g/cm.sup.3, an air permeability per basis weight of 0.05 to 0.45 (cm.sup.3/cm.sup.2.Math.sec)/(g/m.sup.2), and a bending resistance per basis weight, in at least one of the machine direction (MD) and the transverse direction (TD), of 0.09 to 0.32 (mN)/(g/m.sup.2).

A cross-lapped multilayered batt, and a method of making the same is presented. The batt includes one or more layers of a carded web of staple fibers, and one or more continuous filament fiber layers. At least some of the staple fibers and, in some instances, some of the continuous filament fibers are mechanically entangled through a thickness of the batt. The method includes folding both the carded web and the continuous filament fiber layers together, and subjecting the folded layers to a needle-punching process to impart structural stability and enhance the Z-directional strength of the batt.

A non-woven fabric comprising bicomponent fibers. The non-woven fabric has a core containing polylactic acid (PLA-1), coated with an envelope containing polylactic acid (PLA-2). The fibers are characterised in that PLA-1 is a copolymer of lactic acid monomers L1 and lactic acid monomers D1, and PLA-2 is a copolymer of lactic acid monomers L2 and lactic acid D2, whose D2 monomers rate is greater than the monomers rate D1 of PLA-1. The core further contains a polymeric plasticizer. The non-woven fabric may be used for making coffee filters and/or capsules via a thermoforming process for use in a percolating apparatus.