A face mask is disclosed. The face mask includes a mask pad adapted to cover a nose and a mouth of a wearer and allows a passage of air therethrough to the wearer and restricts a passage of microbes. The mask pad has at least a surface protected by a sulfonated polymeric layer for killing at least 90% microbes within 120 minutes of contact with at least a surface of the face mask. The sulfonated polymeric layer consists essentially of a sulfonated polymer, the sulfonated polymer being selected from the group of perfluorosulfonic acid polymers, polystyrene sulfonates, sulfonated block copolymers, sulfonated polyolefins, sulfonated polyimides, sulfonated polyamides, sulfonated polyesters, sulfonated polysulfones, sulfonated polyketones, sulfonated poly(arylene ether), and mixtures thereof.

A filtering film includes a porous substrate and a membrane disposed on the porous substrate. The membrane includes a plurality of fibers of one or more bio-degradable materials. The fibers have an average diameter of about 50 nm to about 3 μm. The one or more bio-degradable materials has a melt flow index of at least 5 g/10 min at 210° C. at a load of 2.16 kg.

The present invention relates to nanofilters and nanofliter systems for personal and health care protective equipment to protect against health and safety hazards having application in healthcare, industrial, public, domestic environments, They are applied to face masks, respirators, face shields, protective glasses and clothes, to protect healthcare workers and other individuals against microparticles, dust, bacteria, fumes, vapors, gases, allergens, air pollutants, airborne microorganisms and especially nanosized viruses such as influenza, HIV, SARs, SARs-CoV-2. It also relates to a method for fabricating thereof with higher filtration efficiency, and to Nano-face masks, respirators, Nano-face shields exhibiting antibacterial, anti-viral protection and particulate-filtering due to the excellent barrier and filtration properties of the nanofliter system. It is also applied to the delivery of nanoparticles, organic or inorganic with antibacterial, antiviral properties, drugs, therapeutic agents, nanomedicines, or/and compounds, sensors,

Methods, apparatuses, and systems associated with personal protective equipment are provided. An example mask may include an exterior layer, one or more mask straps coupled to the exterior layer, and a filter layer. An example method for manufacturing a protective garment may include providing a front segment, providing a back segment, and connecting the front segment and the back segment by at least forming a front raglan seam.

The present disclosure relates to filtration media packs, filter elements, and methods for manufacturing filtration media packs and filter elements. The present disclosure is directed to filtration media packs having alternating first media sheet and second media sheet secured together and forming a first flow face and a second flow face, wherein the first media sheet and the second media sheet provide a first separation or gap therebetween as a result of the presence of a first plurality of protrusions or bosses extending from at least one of the first media sheet or the second media sheet, and a second separation or gap therebetween as a result of a second plurality of protrusions or bosses extending from at least one of the first media sheet or the second media sheet, and the media pack being closed to passage of unfiltered fluid therethrough from the first flow face to the second flow face or from the second flow face to the first flow face without filtering passage through the first media sheet or the second media sheet.

Membranes suitable for use in membrane distillation are provided. Such membranes may include nano-fibrous layers with adjustable pore sizes. The membranes may include a hydrophobic nano fibrous scaffold and a thin hydrophilic protecting layer that can significantly reduce fouling and scaling problems.

An air filter medium includes a glass filter medium layer that includes a glass fiber. The glass filter medium layer has a protruding portion. The protruding portion undergoes a change in protrusion height of 70% or less when left to stand at an atmospheric temperature of 100° C. for one hour.

Disclosed herein is a mask with an ePTFE membrane including: a mask sheet for covering a wearer's nose and mouth; and a mask string which is connected to both ends of the mask sheet and is held to the wearer's ears, wherein the mask sheet includes an ePTFE membrane. The mask sheet includes: an inner layer located toward the wearer's face; an outer layer located on the opposite side of the inner layer which faces the wearer's face; and the ePTFE membrane located between the inner layer and the outer layer. Furthermore, both ends of the outer layer, both ends of the ePTFE membrane and both ends of the inner layer are bonded mutually.

A filtration material having a second fibrous layer (downstream drainage layer) with a length that is shorter than the length of the first fibrous material (upstream drainage layer) is provided. At least the first fibrous material is meltable. In forming the filtration material, the second fibrous layer may be cut to a predetermined length while the porous membrane and the first fibrous layer maintain their length. The length of the second fibrous layer may be substantially the same as the length of the outer cage. The filtration material is disposed within the outer cage such that the first fibrous layer and the porous membrane protrude from the cage member. When positioning an end cap onto the filtration material, heat is applied and the first fibrous layer melts and bonds to the end cap at a melt interface. The filtration material is free from thermoplastic strips and imbibed thermoplastic material(s).

A fluid circuit defining a flow path for a fluid from a fluid supply toward a process stage. The fluid circuit may include a plurality of operative components including a body portion and a plurality of tubing connector fittings. The operative components may be connected by a plurality of tubing segments. Each body portion may include a non-conductive fluoropolymer portion and an outer conductor that extends between each of the plurality of tubing connector fittings and that is unitary with the non-conductive fluoropolymer portion. The plurality of tubing segments may include a non-conductive fluoropolymer tubing portion and an axial strip of conductive polymer. The outer conductor of each body portion conductively connected with tubing segments connected thereto. Each of the connectors may include a bridging component for conductively connecting the respective outer conductor of the body portion to the strip of conductive polymer of the connecting tubing segments.