An annular filter includes a first annulus wall and a second annulas wall being impermeable to fluid (liquid and gas), a first circular wall and a second circular wall mounted between the first annulas wall and second annulas wall wherein the first and second circular wall are permeable to fluid (liquid and gas), at least one dividing wall mounted between the first and second circular wall to divide an internal volume defined between the first and second annulas wall and the first and second circular wall into channels, bisecting walls between the first and second circular walls to change a direction of fluid flow from a first direction to a second direction first and second channels, turbulator walls mounted channel, wherein the turbulator walls cause turbulent fluid flow in the channels, and a filter media positioned in at least one of the channels.

The invention relates to a method for producing a respiratory protection mask (1) comprising a filter material piece (2) made of an air-permeable material, comprising the steps of: providing a first non-woven material; compacting the first non-woven material in regions; bonding the first non-woven material to a second non-woven material in the compacted region.

A textile and a method of making the same comprising a microplastic collection layer, a microplastic capture layer, and a water resistant protection layer. The microplastic collection outer layer includes a plurality of openings therein for collecting microplastics from a body of water. The microplastic attraction and capture middle layer attracts and captures the microplastics collected by the microplastic collection outer layer. The water resistant protection layer protects a wearer's skin against the microplastics captured by the microplastic attraction and capture middle layer.

The present disclosure provides filters that can be removed from surfaces without damage by having reduced or eliminated contribution of a core backing to peel force generated by the adhesive during removal. In some instances, this can be accomplished by a core that loses structural integrity in a direction normal to a plane defined by a major surface. In other instances, the contribution is reduced by compromising the interface between the core and a peelable adhesive layer.

A replaceable air filter element is provided with fixation pockets configured to record corers or edges of reusable exoskeleton support frame. The exoskeleton support frame, The reusable exoskeleton support frame is adapted to detachably engage the fixation pockets to support the filter medium. The exoskeleton support frame of the filter element is configured to be reused such that only the filter medium is replaced, thereby reducing the environmental waste and making for a “green” eco-friendly air filter element.

The present disclosure provides a filter material used for automobile air conditioning and capable of filtering out volatile organic compound (VOC) gas, including a sandwich structure (100) and an activated carbon fiber (ACF) non-woven fabric layer (200) located at one side of the sandwich structure (100), where, the ACF non-woven fabric layer (200) is composed of interleaved ACFs, and the ACF non-woven fabric layer (200) is compounded with the sandwich structure (100) via hot melt adhesive (HMA) (210).

A depth filter with excellent filtration accuracy and pressure resistance performance even for fluids containing high density and high viscosity powder fine particles. A depth filter having a base material layer, a filtration layer, and a skin layer, in that order, wherein: the substrate layer and the skin layer are layers made by a nonwoven fabric being wound and thermally fused; the filtration layer is a laminate in which at least a nonwoven fabric and a net are laminated, being wound twice or more; and the nonwoven fabric contained in the filtration layer contains a mixed-fiber nonwoven fabric containing two or more types of fibers with mutually different average fiber diameters.

The invention relates to a face mask comprising a compound structure with an inner layer and two sandwich layers, wherein the inner layer is made from a filter material for filtering particles and germs, the sandwich layers are made from a textile material, the inner layer is sandwiched by the sandwich layers, and the sandwich layers are bonded to the inner layer at least in sections along the perimeter of the face mask and in sections in the inner area of the face mask.

In this way, a reusable face mask with enhanced filtration efficiency is provided.

The present application relates to biodegradable and ecofriendly fabrics and methods for making the same. The fabrics are made from PLA fibers and/or yarns, and have one-way or two-way filtration characteristics and/or moisture management characteristics with controlled porosity and smooth or textured surface, the moisture management characteristics arise from a combined effect of material properties and fabric structure.

The invention comprises a vacuum cleaner filter bag with a bag wall, comprising: a support layer comprising recycled polyethylene terephthalate, rPET; a fine filter layer of a meltblown non-woven fabric comprising polypropylene, PP, PET and/or recycled polypropylene, rPP; and a capacity layer of a non-woven fabric comprising rPET, recycled textile material, TLO, and/or rPP; wherein the bag wall moreover comprises at least one intermediate layer formed of a non-woven fabric or a fibrous web and comprising rPP as a main component; and wherein the at least one intermediate layer is arranged between the support layer and the fine filter layer and/or between the fine filter layer and the capacity layer.