A fiber reinforced resin hollow molded body 30 in which a resin-integrated fiber sheet is used. The resin-integrated fiber sheet includes unidirectional continuous fibers that are spread fibers of a continuous fiber group and arrayed unidirectionally in parallel, and thermoplastic resin that is present at least on a surface of the unidirectional continuous fibers. In the hollow molded body, in a state where the resin-integrated fiber sheet or a plurality of the resin-integrated fiber sheets 30 are stacked, the resin-integrated fiber sheet or the plurality of resin-integrated fiber sheets are wound to produce a wound body having an overlapping portion. The thermoplastic resin is impregnated in the unidirectional continuous fibers. The resin-integrated fiber sheet or the plurality of resin-integrated fiber sheets are consolidated.

A multi-layered material with low thickness is provided, having properties of thermal and electric insulation, flame retardant capacity and high mechanical strength, useful for the manufacture of personal protective equipment and more in general of work items for the protection against arc flash effects. The material provides a high grade of protection against arc flash with good flexibility and comfort for the wearer, who is thus protected without being hindered in movements.

A moisture-curable polyurethane hot melt adhesive composition having good oleic acid resistance, especially when exposed to 100% pure oleic acid under aging condition of 65° C. and 90% relative humidity, wherein the adhesive composition comprises, consists essentially of or consists of a moisture-curable polyurethane prepolymer, the prepolymer being a reaction product of at least one amorphous polyester polyol containing an aromatic group and at least one polyisocyanate, preferably at least one polyisocyanate containing an aromatic group, wherein the aromatic group is comprised in the polyurethane prepolymer in a content of no less than 23 wt. %, preferably no less than 25 wt. %, more preferably no less than 30 wt. %.

Described herein is a building panel comprising a body comprising a first fibrous material comprising inorganic fiber, a non-woven scrim coupled to the body; and wherein the non-woven scrim has a thickness ranging from about 8 mils to about 20 mils.

A composite carbon fiber laminate, including a first carbon fiber woven fabric layer, including one or more first voids defined between fabric strands of the first carbon fiber woven fabric layer; a second carbon fiber woven fabric layer, including one or more second voids defined between fabric strands of the second carbon fiber woven fabric layer; a core fabric layer; a first reflective layer positioned between the first carbon fiber woven fabric layer and the core fabric layer; and a second reflective fabric layer positioned between the second carbon fiber woven fabric layer and the core fabric layer, wherein the first reflective layer reflects light that is incident upon the first carbon fiber woven fabric layer at the one or more first voids.

A multi-layered composite insulation material includes a first and second outer layers having one or more of para-aramid, meta-aramid, flame-retarded modacrylic, or pre-oxidized polyacrylonitrile fibers; and an inner layer disposed between the first and second outer layers having one or more of polyacrylonitrile fibers or ceramic fibers. The inner and outer layers are bonded via needle punching, thermal bonding, or stitch bonding. The outer layers further include flame-retardant rayon fibers and a woven or knit fabric having continuous high-temperature glass, silica, or ceramic filaments.

A nonwoven web obtained by electrospinning, suitable for the filtration of nano- and/or submicron aerosols, including a multiplicity of fibers of composition C1, the composition C1 including at least 50% by weight of at least one polymer P1 based on the repeat unit resulting from vinylidene fluoride (VDF), the fibers of composition C1 having a degree of crystallinity in polar phase(s), preferentially in solely beta phase, of at least 65% by weight, with respect to their total weight. Also, a process for the manufacture of the web, to a membrane including the web and also to a process for the washing/sterilization of the web or of the membrane.

Ballistic resistant composite materials having high positive buoyancy in water are provided. More particularly, provided are foam-free, buoyant composite materials fabricated using dry processing techniques. The materials comprise fibrous plies that are partially coated with a particulate binder that is thermopressed to transform a portion of the binder into raised, discontinuous patches bonded to fiber/tape surfaces, while another portion of the particulate binder remains on the fibers/tapes as unmelted particles. The presence of the unmelted binder particles maintains empty spaces within the composite materials which increases the positive buoyancy of the composites in water.

A wet sheet for cleaning includes multiple layers and is impregnated with a chemical solution. The wet sheet includes hydrophobic fiber layers arranged in a front surface layer and a back surface layer, and a hydrophilic fiber layer arranged in an intermediate layer. The hydrophobic fiber layers have an interlaced part with a high fiber density where the hydrophobic fiber layers are interlaced with the hydrophilic fiber layer. The interlaced part has at least one slightly interlaced part and at least one highly interlaced part which is formed in a dent shape and which is interlaced with a higher fiber density. The highly interlaced part is formed in an area ratio of 10 to 20% to an area of the front surface layer or the back surface layer. Static friction resistance of the wet sheet for cleaning is lower than kinetic friction resistance of the wet sheet for cleaning.

Compositions-of-matter comprising a matrix made of one or more, preferably two or more elastic layers and one or more viscoelastic layer are disclosed. The compositions-of-matter are characterized by high water-impermeability and optionally by self-recovery. Processes of preparing the compositions-of-matter and uses thereof as tissue substitutes or for repairing damaged tissues are also disclosed.