A nonwoven fabric comprising extendable fiber and elastic fiber, wherein the nonwoven fabric comprises a first side having a plurality of protrusions and a plurality of recesses and a second side on the side opposite the first side, the proportion of extendable fiber in the protrusions on the first side is higher than the proportion of extendable fiber in the recesses on the first side, and the nonwoven fabric is coated with a hydrophilic agent, or the extendable fiber and elastic fiber comprise a hydrophilic agent, the nonwoven fabric has a water absorbing property represented by a water absorption height of at least 10 mm in a water absorption test, and a quick-drying property represented by a transpiration rate of at least 20 mass % in a transpiration test.

A nonwoven web material including fibers formed of a polyolefin and a polyester is disclosed. The fibers may include fine fibers produced by, for example, a meltblowing process. The polyolefin may be polypropylene and the polyester may be polylactic acid. The polylactic acid may be obtained and included by recycling scrap nonwoven material containing a polylactic acid component, hydrolyzing the polylactic acid component to reduce its viscosity, blending the hydrolyzed polylactic acid with a polyolefin resin, and melt-spinning the blended material to form fibers. A related process is disclosed.

A nonwoven web material including fibers formed of a polyolefin and a polyester is disclosed. The fibers may include fine fibers produced by, for example, a meltblowing process. The polyolefin may be polypropylene and the polyester may be polylactic acid. The polylactic acid may be obtained and included by recycling scrap nonwoven material containing a polylactic acid component, hydrolyzing the polylactic acid component to reduce its viscosity, blending the hydrolyzed polylactic acid with a polyolefin resin, and melt-spinning the blended material to form fibers. A related process is disclosed.

The present disclosure is to provide a gas permeable hot-melt sealing film for healthcare packaging. The gas permeable hot-melt sealing film includes an polyolefin spunbondeded nonwoven fabric substrate; and a water-based hot-melt adhesive coating layer coated on the substrate including voids, wherein the coating amount of the water-based hot-melt adhesive is in the range of 6 g/m.sup.2 to 35 g/m.sup.2 and the surface void ratio thereof is in the range 0.5% to 6.0%. The gas permeable hot-melt sealing coating film of the present disclosure has sufficient gas permeability, and satisfied seal strength and peelability after sealing around with flexible sheet or blister container.

The present disclosure is to provide a gas permeable hot-melt sealing film for healthcare packaging. The gas permeable hot-melt sealing film includes an polyolefin spunbondeded nonwoven fabric substrate; and a water-based hot-melt adhesive coating layer coated on the substrate including voids, wherein the coating amount of the water-based hot-melt adhesive is in the range of 6 g/m.sup.2 to 35 g/m.sup.2 and the surface void ratio thereof is in the range 0.5% to 6.0%. The gas permeable hot-melt sealing coating film of the present disclosure has sufficient gas permeability, and satisfied seal strength and peelability after sealing around with flexible sheet or blister container.

The present invention is to provide a water-based hot-melt adhesive for healthcare packaging. The water-based hot-melt adhesive includes 20 to 60 weight parts of hydrophilic-modified water-based polyolefin resin; 1 to 30 weight parts of water-based ionomer; 10 to 30 weight parts of wax particles; and 10 to 30 weight parts of tackifier particles. The coating layer formed on the healthcare packaging substrate from the water-based hot-melt adhesive of the present invention has great gas-permeability and weather resistance, and the healthcare packaging substrate with the water-based hot-melt adhesive of the present invention has satisfied seal strength, pealing ability and reliability after sealing with flexible sheet or blister containers at the peripheral edges thereof.

The present invention is to provide a water-based hot-melt adhesive for healthcare packaging. The water-based hot-melt adhesive includes 20 to 60 weight parts of hydrophilic-modified water-based polyolefin resin; 1 to 30 weight parts of water-based ionomer; 10 to 30 weight parts of wax particles; and 10 to 30 weight parts of tackifier particles. The coating layer formed on the healthcare packaging substrate from the water-based hot-melt adhesive of the present invention has great gas-permeability and weather resistance, and the healthcare packaging substrate with the water-based hot-melt adhesive of the present invention has satisfied seal strength, pealing ability and reliability after sealing with flexible sheet or blister containers at the peripheral edges thereof.

The present disclosure provides composite materials comprising nettings, mattings or meshes thermally bonded to outer layers of nonwoven fibers that may be configured for use in a variety of applications and products. A composite material comprises a first layer of netting comprising intersecting strands and a second layer in contact with the first layer. The second layer comprises first and second fiber components. The first fiber components have a melting point at least 20 degrees higher than the melting point of the netting. The second fiber components have a melting point within 20 degrees Celsius of the fibers in the netting layer. This allows the second fiber components to thermally bond with the netting at contact points upon the application of heat and pressure. The first fiber components do not substantially thermally bond to the netting and thus form an outer layer, such as a sock, that protects the netting layer.

The present disclosure provides composite materials comprising nettings, mattings or meshes thermally bonded to outer layers of nonwoven fibers that may be configured for use in a variety of applications and products. A composite material comprises a first layer of netting comprising intersecting strands and a second layer in contact with the first layer. The second layer comprises first and second fiber components. The first fiber components have a melting point at least 20 degrees higher than the melting point of the netting. The second fiber components have a melting point within 20 degrees Celsius of the fibers in the netting layer. This allows the second fiber components to thermally bond with the netting at contact points upon the application of heat and pressure. The first fiber components do not substantially thermally bond to the netting and thus form an outer layer, such as a sock, that protects the netting layer.

Disclosed herein are nonwoven webs comprising a nonwoven substrate and a binder comprising a polysaccharide. In one embodiment, the polysaccharide can comprise poly alpha-1,3-glucan, a poly alpha-1,3-glucan ether compound as disclosed herein, a poly alpha-1,3-glucan ester compound as disclosed herein, a graft copolymer comprising a backbone comprising dextran and poly alpha-1,3-glucan side chains, a crosslinked graft copolymer comprising a backbone comprising dextran and poly alpha-1,3-glucan chains, or a mixture thereof. Also disclosed are articles comprising the nonwoven webs, and methods of making the nonwoven webs.