A nonwoven filtration medium that includes a fibrous base media including synthetic and/or fiberglass fibers and microfibrillated cellulose fibers.

The invention relates to a method for the production of a textile object having electrostatically charged fibres and to a textile object. A die arrangement comprising at least two separate dies or a multipolymer die is used for the production of fibres from different polymers, whereby the polymers are spaced sufficiently apart in a triboelectric series. During the process, the fibres produced from the polymers are co-mingled, at least in sections, and charged triboelectrically. Alternatively or in addition, the fibres are charged triboelectrically by means of an uncomplicated finishing process. Filters with quality factors greater than 0.2 can be produced with the textile object.

The present invention is generally related to a high capacity, high efficiency nonwoven filtration media comprising a gradient pore structure. In particular, the filtration media can comprise thermoplastic synthetic microfibers, fibrillated fibers, staple fibers, and a binder. Furthermore, the filtration media may be produced without the use of glass fibers or microglass fibers. A process for making the filtration media is also provided. Consequently, the filtration media of the present invention does not cause the same issues as conventional filtration media that comprises glass fibers and/or microglass fibers. Moreover, the filtration media can be used to treat fuel, lubrication fluids, hydraulic fluids, and various other industrial gases.

The present invention relates to a nonwoven fabric for cabin air filter including a low melting point polyester fiber, in which the nonwoven fabric for cabin air filter includes a first polyester fiber containing a polyester resin having a melting point higher than 250° C. and a second polyester fiber containing a low melting point polyester resin having a softening point of 100 to 150° C., the first polyester fiber is a modified cross-sectional yarn having a roundness of 50 to 80%, the second polyester fiber includes a low melting point polyester resin which is formed from an acid component included of terephthalic acid or ester-forming derivatives thereof, and a diol component included of 2-methyl-1,3-propanediol, 2-methyl-1,3-pentanediol, and ethylene glycol, and the second polyester fiber contains illite particles, i.e., micaceous mineral, or a mixture of the illite particles and sericite particles, and silver-based inorganic antibacterial agent particles.

The present invention is generally related to a high capacity, high efficiency nonwoven filtration media comprising a gradient pore structure. In particular, the filtration media can comprise thermoplastic synthetic microfibers, fibrillated fibers, staple fibers, and a binder. Furthermore, the filtration media may be produced without the use of glass fibers or microglass fibers. A process for making the filtration media is also provided. Consequently, the filtration media of the present invention does not cause the same issues as conventional filtration media that comprises glass fibers and/or microglass fibers. Moreover, the filtration media can be used to treat fuel, lubrication fluids, hydraulic fluids, and various other industrial gases.

A filter reinforcing material is disclosed that does not cause peeling or pleat adhesion at the time of pleating, is excellent in pleating, and has high stiffness. A filter reinforcing material includes a bonding layer comprising a thermal bonded nonwoven including thermal bondable short fibers, and a reinforcing layer comprising a nonwoven including high-melting fibers having a higher melting point than a melting point of the thermal bondable short fibers having the lowest melting point in the bonding layer by 30 C. or more. Further, the bonding layer preferably comprises two or more kinds of thermal bondable short fibers with a fineness difference of more than or equal to 5 dtex.

The present invention relates to a resin binder composition, a filter medium comprising the resin binder composition as well as related methods and uses.

Fibrous filtration media and method of making the same are provided. According to preferred embodiments, the filtration media includes an embossed wet-laid hot area-calendered nonwoven fibrous web which includes synthetic staple fibers, and from about 20 wt. % to about 80 wt. %, based on total weight of the fibrous web, of bicomponent staple fibers dispersed through the fibrous web. The fibrous web exhibits dry and wet burst strengths of greater than 5 bar, usually greater than 10 bar, and more preferably greater than about 12 bar, or even greater than about 15 bar in some embodiments.

A nonwoven filtration medium that includes a fibrous base media including synthetic and/or natural fibers and microfibrillated cellulose fibers.

Fibrous filtration media and method of making the same are provided. According to preferred embodiments, the filtration media includes a wet-laid hot area-calendered nonwoven fibrous web which includes synthetic staple fibers, and from about 20 wt. % to about 80 wt. %, based on total weight of the fibrous web, of sheath-core bicomponent staple fibers dispersed through the fibrous web. The fibrous web exhibits dry and wet burst strengths of greater than 10 bar, preferably greater than about 12 bar, e.g. greater than about 15 bar.