The present invention relates to a process for the production of a nonwoven fabric. In particular, the present invention relates to the production of a nonwoven fabric having desirable tactile and haptic properties, as well as to the nonwoven fabric itself. The process requires the selection of specific materials and process conditions. The fabric is produced from a masterbatch of isotactic polypropylene homopolymer and a surface-treated calcium carbonate filler.

A hydroentangled nonwoven sheet material produced by a process including: 0) optionally providing a polymer web on a carrier; a) providing an aqueous suspension containing short fibres and a surfactant; h) depositing the aqueous suspension on the carrier; c) removing aqueous residue of the aqueous suspension deposited in step h) to form a fibrous web; b) depositing aqueous suspension on a surface of the fibrous web formed in step c); c) removing aqueous residue of the aqueous suspension deposited in step b) to form a combined fibrous web; d) hydroentangling the combined fibrous web; and optionally e) drying the hydroentangled web, and/or f) further processing and finalising the dried, hydroentangled web the web to produce the nonwoven end material. The hydroentangled non-woven sheet material obtainable by this process has a low degree of surface irregularity and contains low residues of surfactants.

A hydroentangled nonwoven sheet material produced by a process including: 0) optionally providing a polymer web on a carrier; a) providing an aqueous suspension containing short fibres and a surfactant; h) depositing the aqueous suspension on the carrier; c) removing aqueous residue of the aqueous suspension deposited in step h) to form a fibrous web; b) depositing aqueous suspension on a surface of the fibrous web formed in step c); c) removing aqueous residue of the aqueous suspension deposited in step b) to form a combined fibrous web; d) hydroentangling the combined fibrous web; and optionally e) drying the hydroentangled web, and/or f) further processing and finalising the dried, hydroentangled web the web to produce the nonwoven end material. The hydroentangled non-woven sheet material obtainable by this process has a low degree of surface irregularity and contains low residues of surfactants.

The present invention provides a fabricating method for meltblown nonwoven from natural cellulose fiber blended with nano silver, which comprises following steps. Firstly, prepare nano silver colloidal sol by reduction titration for mixture of polyvinyl alcohol (PVA), silver nitrate (AgNO.sub.3) and sodium borohydride (NaBH.sub.4). Secondly, prepare mixing cellulose serum by blending agitation for mixture of wood pulp, N-methylmorpholine N-oxide (NMMO) and stabilizer. Thirdly, prepare blending mucilage from mixing cellulose serum via blending process. Fourthly, produce spinning dope by blending and dehydrating the nano silver colloidal sol and mixing cellulose serum. Fifthly, produce molten filament tow by meltblown spinning method in association with coagulation, regeneration in coagulation bath, and water rinse. Finally, by post treatments of hydro-entangled needle punching, drying, winding-up processes in proper order, obtain final product of meltblown nonwoven from natural cellulose fiber blended with nano silver, which is biodegradable with features of antibacterial and antistatic capabilities.

The present invention provides a fabricating method for meltblown nonwoven from natural cellulose fiber blended with nano silver, which comprises following steps. Firstly, prepare nano silver colloidal sol by reduction titration for mixture of polyvinyl alcohol (PVA), silver nitrate (AgNO.sub.3) and sodium borohydride (NaBH.sub.4). Secondly, prepare mixing cellulose serum by blending agitation for mixture of wood pulp, N-methylmorpholine N-oxide (NMMO) and stabilizer. Thirdly, prepare blending mucilage from mixing cellulose serum via blending process. Fourthly, produce spinning dope by blending and dehydrating the nano silver colloidal sol and mixing cellulose serum. Fifthly, produce molten filament tow by meltblown spinning method in association with coagulation, regeneration in coagulation bath, and water rinse. Finally, by post treatments of hydro-entangled needle punching, drying, winding-up processes in proper order, obtain final product of meltblown nonwoven from natural cellulose fiber blended with nano silver, which is biodegradable with features of antibacterial and antistatic capabilities.

A method to prepare nonwoven webs suitable for use as an industrial wipe which have good MD and CD strength is provided. The method includes hydroentangling an airlaid web of natural cellulose fibers having a fiber length of no more than 3.5 mm, bonding fibers having a fiber length of from 6.0 to 12.0 mm and optionally, manmade fibers having a fiber length of from 6.0 to 12.0 mm. The airlaid web is a homogeneous mat of the natural cellulose fibers, the optional manmade fibers and the bonding fibers and is not laid on a precursor web. No non-fiber adhesive or binder is utilized. The airlayering and hydroentangling are conducted in a continuous operation. The method to manufacture the nonwoven web may include an embossing or crepeing operation.

A process of forming a non-woven web including spinning continuous polymeric filaments including one selected from a poly(phenylene ether) component, a poly(phenylene ether)-polysiloxane block copolymer, and combinations thereof. The filaments can have a length to diameter ratio that is more than 1,000,000, and a diameter ranging from 50 nanometers to 5 microns. The spinning can include passing a polymer through a spinneret having a plurality of orifices in a non-electrospinning environment. The process can further include chopping the plurality of continuous filaments and obtaining a plurality of chopped nano-fibers and forming the nano-fibers into a nonwoven web. The spinning can be conducted at a rate of at least 300 grams/hour/spinneret.

A fluid processing system (2) for a fiber treatment system (1), which fluid processing system (2) has a moistening device (6), in particular a water-jet consolidating device, for a textile material web (3) and a preferably thermal drying device (7) for the moist material web (3). The moistening device (6) introduces process water (19) into the material web (3), which process water is removed from the material web (3) in the drying process. The fluid processing system (2) has fluid circuits (9, 10) and a regenerating device (16) for the process water (19) that is introduced into the material web (3) and thereafter removed and for the wastewater (32) arising in the process of moistening the material web (3).

A fluid processing system (2) for a fiber treatment system (1), which fluid processing system (2) has a moistening device (6), in particular a water-jet consolidating device, for a textile material web (3) and a preferably thermal drying device (7) for the moist material web (3). The moistening device (6) introduces process water (19) into the material web (3), which process water is removed from the material web (3) in the drying process. The fluid processing system (2) has fluid circuits (9, 10) and a regenerating device (16) for the process water (19) that is introduced into the material web (3) and thereafter removed and for the wastewater (32) arising in the process of moistening the material web (3).

A dispersible moist wipe generally comprises a nonwoven tissue web having regenerated fibers in an amount of about 10 to about 30 percent by weight and natural fibers in an amount of about 70 to about 90 percent by weight. The regenerated fibers and the natural fibers are hydroentangled such that the web has a geometric mean tensile strength of at least 250 grams per inch and a slosh-box break-up time of less than 155 minutes.