A packaging for sterile packaging application includes: a single layer nonwoven fabric obtained from a nonwoven, the nonwoven including meltblown polymer fibers having an average fiber diameter between 2 μm to 10 μm and a standard deviation of the fiber diameter of at least 100%. The nonwoven is thermally bonded.

A packaging for sterile packaging application includes: a single layer nonwoven fabric obtained from a nonwoven, the nonwoven including meltblown polymer fibers having an average fiber diameter between 2 μm to 10 μm and a standard deviation of the fiber diameter of at least 100%. The nonwoven is thermally bonded.

A blended polymer comprising, an amorphous thermoplastic polymer and a thermoplastic semi-crystalline polymer, each of the polymers being essentially miscible in the other and being blended at a weight ratio of amorphous polymer/semi-crystalline polymer of greater that 0.05 to about 20 forms a melt blown nonwoven fabric having essentially no defects with long fiber lengths having uniform diameters. The nonwoven fabrics when used as a filter may have greater than 95% efficiency at a pressure drop of less than 2 mm Hg even after being exposed to high temperatures (˜70° C.) for an hour or more.

A blended polymer comprising, an amorphous thermoplastic polymer and a thermoplastic semi-crystalline polymer, each of the polymers being essentially miscible in the other and being blended at a weight ratio of amorphous polymer/semi-crystalline polymer of greater that 0.05 to about 20 forms a melt blown nonwoven fabric having essentially no defects with long fiber lengths having uniform diameters. The nonwoven fabrics when used as a filter may have greater than 95% efficiency at a pressure drop of less than 2 mm Hg even after being exposed to high temperatures (˜70° C.) for an hour or more.

The invention discloses a fiber filament non-woven fabric with a small pore size and a large porosity, which adopts an island type ultra-fine fiber single filament, which is juxtaposed into an unidirectional silk layer several times, and a thin strip-shaped liquid is applied laterally on the unidirectional silk layer. The resin adhesive liquid bonds and fixes all the silk layers into a unidirectional non-woven fabric fixed in a grid segment. The unidirectional non-woven fabric is covered with meltblown non-woven fabric on one or both sides to make a filter material that can 100% filter viruses, bacteria, and micro-particles smaller than PM2.5. It can also be used for a wider range of filter materials, thermal insulation materials, oil absorption materials, battery separator materials, medical and health materials, environmental protection materials, clothing materials, wiping materials.

The invention discloses a fiber filament non-woven fabric with a small pore size and a large porosity, which adopts an island type ultra-fine fiber single filament, which is juxtaposed into an unidirectional silk layer several times, and a thin strip-shaped liquid is applied laterally on the unidirectional silk layer. The resin adhesive liquid bonds and fixes all the silk layers into a unidirectional non-woven fabric fixed in a grid segment. The unidirectional non-woven fabric is covered with meltblown non-woven fabric on one or both sides to make a filter material that can 100% filter viruses, bacteria, and micro-particles smaller than PM2.5. It can also be used for a wider range of filter materials, thermal insulation materials, oil absorption materials, battery separator materials, medical and health materials, environmental protection materials, clothing materials, wiping materials.

Disclosed herein are nonwoven fibrous web comprising a population of fibers, wherein the fibers are formed from a composite that comprises: (i) a thermoplastic elastomeric polymer (TPE) component; (ii) a soft elastomeric polymer component that at ambient temperatures is above its glass transition temperature; and (iii) optionally a filler. Also described are methods of making these nonwoven fibrous webs as well as articles made therefrom.

Disclosed herein are nonwoven fibrous web comprising a population of fibers, wherein the fibers are formed from a composite that comprises: (i) a thermoplastic elastomeric polymer (TPE) component; (ii) a soft elastomeric polymer component that at ambient temperatures is above its glass transition temperature; and (iii) optionally a filler. Also described are methods of making these nonwoven fibrous webs as well as articles made therefrom.

A nanofiber nonwoven product is disclosed which comprises a polyamide with a relative viscosity from 2 to 330, spun into nanofibers with an average diameter of less than 1000 nanometers (1 micron). In general, the inventive products are prepared by: (a) providing a polyamide composition, wherein the polyamide has a relative viscosity from 2 to 330; (b) melt spinning the polyamide composition into a plurality of nanofibers having an average fiber diameter of less than 1 micron, followed by (c) forming the nanofibers into the product.

A nanofiber nonwoven product is disclosed which comprises a polyamide with a relative viscosity from 2 to 330, spun into nanofibers with an average diameter of less than 1000 nanometers (1 micron). In general, the inventive products are prepared by: (a) providing a polyamide composition, wherein the polyamide has a relative viscosity from 2 to 330; (b) melt spinning the polyamide composition into a plurality of nanofibers having an average fiber diameter of less than 1 micron, followed by (c) forming the nanofibers into the product.