Thermoplastic composite preforms for continuous fiber thermoplastic composite structural profiles and a system and method of manufacture for structural profiles utilizing thermoplastic filaments comingled with high strength fibers such as carbon fibers and braided into complex preforms suitable for automated press forming is disclosed. Utilizing flexible preforms in lieu of conventional rigid thermoplastic pre-preg material forms allows for manufacture of complex shapes, including both straight and curved shapes by an automated process.

Embodiments of a leno weave mesh of the present invention generally include a plurality of high-temperature weft yarns, high-temperature warp yarns, and low melting point warp yarns; wherein each low melting point warp yarn is intertwined with a high-temperature warp yarn, each intertwined pair of warp yarns is positioned such that the low melting point warp yarn and high-temperature warp yarn are disposed alternatingly on either side of the woven mesh at intersections of the weft and warp yarns, and the woven mesh is heated whereby the surfaces of the low melting point warp yarns adhere to the surface of the high-temperature warp yarns and said high-temperature weft yarns at contact points there between. An intumescent coating system employing embodiments of the mesh, and a method of providing thermal protection to a substrate utilizing the intumescent coating system, are also provided.

Provided is a fabric for an air bag that is constituted by synthetic fibers, and the warp and the weft of the fabric have a tensile strength of 600 N/cm or more, an air flow rate of the fabric under a differential pressure of 20 kPa is 1.0 L/cm.sup.2.Math.min or less, and an average stress of the warp and the weft that is required to additionally elongate the fabric from a 1.0% elongation state to a 3.0% elongation state is 15 N/cm or more, and an average stress of the warp and the weft that is required to additionally elongate the fabric from the 3.0% elongation state to a 5.0% elongation state is 15 N/cm or more.

A protective textile sleeve and method of construction thereof is provided. The sleeve includes a seamless, tubular braided wall having a plurality of yarns braided with one another. A plurality of the yarns are high temperature, non-heat-shrinkable yams and a plurality of the yarns are heat-shrinkable yams, wherein the heat-shrinkable yams are shrinkable at a temperature that does not cause the high temperature, non-heat-shrinkable yarns to shrink. The sleeve has a first length and first thickness upon being braided, and a second length that less than the first length and a second thickness that is greater than the first thickness upon being exposed to a single heat-treat process.

The invention relates to a method for the ultrasonic welding of a strip consisting of a plastic material for the production of cigarette products, in which method the strip has two free ends which are heated in a connection region by means of ultrasound and joined together to form a closed strip. Ultrasound at a frequency of more than 22 kHz is used.

A method of making a flexible pipe layer, which method comprises: commingling polymer filaments and carbon fibre filaments to form an intimate mixture, forming yarns of the commingled filaments, forming the yarns into a tape, and applying the tape to a pipe body to form a flexible pipe layer.

A process for manufacturing a fiber including polyetherketoneketone including the steps of: mixing polyetherketoneketone and sulfuric acid having a concentration of at least 90 wt % to obtain a spin dope and passing the spin dope through a spinneret into a coagulation bath, wherein the polyetherketoneketone is dissolved in the sulfuric acid to a concentration of 12 to 22 wt %. Also disclosed are fibers obtainable by the process and polyetherketoneketone fibers having a sulfur content of 0.001 to 5 wt %, based on the weight of the fiber, in particular such fibers having low or high crystallinity, as well as, hybrid yarns and composite materials.

A method of making a flexible pipe layer, which method comprises: commingling polymer filaments and carbon fibre filaments to form an intimate mixture, forming yarns of the commingled filaments, forming the yarns into a tape, and applying the tape to a pipe body to form a flexible pipe layer.

A method for producing a woven heat exchanger, includes providing a plurality of microchannel tubes for insertion into a weaving apparatus and weaving the plurality of microchannel tubes within a central region of the heat exchanger by the weaving apparatus. The method further includes merging the plurality of woven microchannel tubes within a first and second end region arranged on the central region for producing a first and second end portion having a circular cross-section. The method further includes gluing the plurality of woven and merged microchannel tubes within the first and second end region and shortening the plurality of weaved, merged, and glued microchannel tubes within the first and second end region.

Embodiments of a leno weave mesh of the present invention generally include a plurality of high-temperature weft yarns, high-temperature warp yarns, and low melting point warp yarns; wherein each low melting point warp yarn is intertwined with a high-temperature warp yarn, each intertwined pair of warp yarns is positioned such that the low melting point warp yarn and high-temperature warp yarn are disposed alternatingly on either side of the woven mesh at intersections of the weft and warp yarns, and the woven mesh is heated whereby the surfaces of the low melting point warp yarns adhere to the surface of the high-temperature warp yarns and said high-temperature weft yarns at contact points there between. An intumescent coating system employing embodiments of the mesh, and a method of providing thermal protection to a substrate utilizing the intumescent coating system, are also provided.