초록 ▼

Particle-laden meltblown material, methods of forming such material, composite laminate fabrics using such material as a layer of the laminate, and uses of such material and/or laminate thereof are disclosed. The particle-laden meltblown material is a coform of the particles and meltblown fibers, co

Particle-laden meltblown material, methods of forming such material, composite laminate fabrics using such material as a layer of the laminate, and uses of such material and/or laminate thereof are disclosed. The particle-laden meltblown material is a coform of the particles and meltblown fibers, consolidated into a meltblown material. The meltblown fibers are made of polymeric materials such that the fibers are tacky after extrusion from the meltblowing die and prior to consolidation as meltblown material; active particles (such as active carbon) are incorporated in the stream of meltblown fibers, as the fibers pass from the die to the consolidation surface, at a location where the fibers are tacky, so that the particles adhere to the surface of the fibers. The polymeric materials forming the meltblown fibers can be elastomeric materials, and/or blends of polymers. The formed meltblown material can be used as a layer of a laminate, with other layers of the laminate providing abrasion resistance and mechanical strength. The meltblown material, and/or laminate including the meltblown material, can be used for gas/vapor filtering and/or adsorbing, and specifically can be used for disposable vacuum cleaner bags and the like.

대표청구항 ▼

A vacuum cleaner bag, formed from a substantially non-dusting nonwoven material, said material comprising: a web of meltblown fibers having a diameter of from less than about 1 micron to about 25 microns, said fibers comprising a blend of a polyolefin and from about 5% to about 30%, by weight, of an

A vacuum cleaner bag, formed from a substantially non-dusting nonwoven material, said material comprising: a web of meltblown fibers having a diameter of from less than about 1 micron to about 25 microns, said fibers comprising a blend of a polyolefin and from about 5% to about 30%, by weight, of an adhesive polymer selected from the group consisting of polybutylene and polyethylene acrylic acid; and up to about 35%, by weight, based on the weight of the nonwoven material, of unblocked active particles, ranging in size from about 50 to about 150 microns, adhered to the surface of said fibers and distributed throughout said web.