97results about "Geotextiles" patented technology

A woven silt fence fabric includes two or more different warp yarns having different cross-sectional shapes in the machine direction and / or two or more different fill yarns having different cross-sectional shapes in the cross-machine / transverse direction. The woven silt fence fabric includes one or more marker yarns having a different color than adjacent yarn(s) to thereby identify one or more of a grade line, install line, monitor line, and / or high visibility line.

Disclosed are exemplary embodiments of woven silt fence fabrics. In exemplary embodiments, the woven silt fence fabric may comprise a high-strength high-modulus monofilament woven silt fence fabric. In exemplary embodiments, the woven silt fence fabric may include two or more different warp yarns having different cross-sectional shapes in the machine direction and / or two or more different fill yarns having different cross-sectional shapes in the cross-machine / transverse direction.

The invention relates to the technical field of soil remediation, and discloses a preparation method and an application method of geotechnical cloth for remediation or barrier of heavy metal contaminated soil. The graft modified keratin geotextile is prepared through pretreatment, cleaning, geotextile processing preparation and modification treatment. When the graft modified keratin geotextile is used for repairing the heavy metal contaminated soil, the graft modified keratin geotextile is laid below or inside the contaminated soil, and heavy metal ions in the soil are released into a liquid phase through leaching treatment and are adsorbed and fixed by the graft modified keratin geotextile. The method is efficient in treatment, can adsorb and remove heavy metals in the soil within a week, solves the problem of heavy metal migration and diffusion in a traditional remediation technology, is free of secondary pollution, can guarantee the original physicochemical properties of the soil, treats pollution with waste, and is low in cost. In addition, the composite material can also be used as an isolating layer, effectively avoids diffusion of heavy metal in soil, and has a wide application prospect.

A tufted article (e.g., an artificial turf panel) having a backing and a plurality of tufts extending through the backing. The plurality of tufts are distributed among a plurality of patterned regions. Each patterned region has at least one tuft of the plurality of tufts. The tufts of each patterned region differ from the tufts of at least one other patterned region of the tufted article in at least one of color, pile height, yarn type, or yarn density. At least one patterned region creates a longitudinal discontinuity in the color pattern of the tufted article. The tufted article does not have a seam. Complementary side edges of the tufted articles can be secured together to form at least a portion of the surface covering without the need for cutting or the use of inlay components.

A system for manufacturing synthetic turf is disclosed that includes an indexing system configured to affix an indexing device to a backing material, a tufting machine configured to receive the backing material and yarn and to fabricate the synthetic turf by tufting the yarn in the backing material and a controller configured to read the indexing device and to post process the synthetic turf as a function of the indexing device.

The present application relates to the technical field of soil remediation, and discloses a preparation and application method of geotextile for heavy metal contaminated soil remediation or isolation. The present application prepares grafted and modified keratin geotextile through pretreatment, cleaning, geotextile processing and modification treatment. When the grafted and modified keratin geotextile is used for heavy metal contaminated soil remediation, it is laid under or in the contaminated soil, and leaching treatment is used to release heavy metal ions in the soil into liquid phase and be adsorbed and fixed by the grafted and modified keratin geotextile. The present application is efficient, can adsorb and remove heavy metals in the soil within one week, solves the problem of heavy metal migration and diffusion in traditional remediation technology, has no secondary pollution, can guarantee the original physicochemical properties of the soil, uses waste to treat pollution, and is low in cost. In addition, the present application can also be used as an isolation layer to effectively avoid the diffusion of heavy metals in the soil, and has a wide application prospect.

A resin composition for monofilaments contains a poly(3-hydroxyalkanoate)-based resin component. The resin composition has a melting point peak temperature of 140° C. or higher and a crystal melting enthalpy of 65 J / g or less as calculated from all melting peaks in differential scanning calorimetry. The monofilament containing the resin composition has high strength and elongation. A method for producing the monofilament containing the resin composition contains, in the stated order, (i) discharging the resin composition in a molten state from a spinning nozzle, and then cooling thereby forming a raw yarn and (ii) stretching the raw yarn in at least one direction.

Disclosed are geotextiles configured for moisture management. In exemplary embodiments, a geotextile comprises a plurality of structural elements including one or more yarns, cords, or filament bundles arranged to form a fabric or grid. At least a portion of the structural elements include capillary-active surfaces and / or are configured to promote capillary wicking of moisture along at least one direction of the geotextile. At least a portion of the structural elements include internal void regions configured to maintain hydraulic conductivity under compaction. The geotextile is operable for providing dual-mode moisture transport through both capillary wicking and hydraulic flow thereby allowing for removal and redistribution of water from pavement layers and subgrade soils.

A method of manufacturing an artificial turf fiber includes extruding a polymer mixture through at least one fiber profile opening of an extrusion plate to form an artificial turf fiber, where the fiber profile opening includes first and second end portion openings and a curved middle portion opening has at least one spine opening proximate to at least one end portion opening, allowing the extruded polymer mixture to travel along a distance between the fiber profile opening to a quenching unit, where the at least one spine opening is sized and positioned such that a net polymer mass flow in the extruded polymer mixture from a position of the spine opening to the at least one end portion of the fiber proximate the spine opening occurs before the fiber is quenched, and quenching the extruded polymer mixture in the quenching unit to form the artificial turf fiber.

A tensioning apparatus (200) is configured to apply tension to an elongated metal element (20) that is supplied to a knitting machine (10) for manufacturing a metal mesh (12) for geotechnical protection. The tensioning apparatus (200) comprises a tensioning device (228) having a set of drums (230) around which one or more coils of an elongated metal element to be placed in a tensioned state are wound. A tensioning member (250) is provided which holds the coil in contact with the drum (230) in such a way that the friction between the elongated metal element (20) and the drum (230) itself is adjusted to create a reaction force opposite the pulling action exerted by the knitting machine (10) which tends to unwind the elongated metal element (20) from the drum (230) of the tensioning device (228).

The present disclosure provides a filament. In one embodiment, the filaments consist of a polyethylene composition. The polyethylene composition comprises (a) from 15% to 25% by weight of a first polyethylene component having a molecular weight (Mw) of greater than 200,000 g / mol and a density of from 0.925 g / cc to 0.945 g / cc, (b) from 20% to 35% by weight of a second polyethylene component having a molecular weight (Mw) of less than 80,000 g / mol and a density of from 0.915 g / cc to 0.950 g / cc, and (c) from 40% to 65% by weight of a third polyethylene component having a molecular weight (Mw) of less than 80,000 g / mol and a density of from 0.925 g / cc to 0.945 g / cc, the third polyethylene component has a molecular weight (Mw) of less than 100,000 g / mol and a density of from 0.940 g / cc to 0.965 g / cc. The polyethylene composition has a density of from 0.935 g / cc to 0.958 g / cc and a melt index (h) of from 0.5 g / 10 min to 5.0 g / 10 min. The present disclosure also provides a backing layer for artificial turf. The backing layer is prepared from filaments composed of a polyethylene composition.

The invention relates to a geotechnical material web comprising an organic first structural material and a second structural material different from the organic first structural material, the second structural material being connected to the first structural material to form a planar material composite web extending in two mutually perpendicular directions. The invention is characterized in that the first and second structural materials are organic materials, the first structural material having a first biodegradability to some extent, while the second structural material has a second biodegradability different from the first biodegradability, in particular lower than the first biodegradability.

A roofing underlay with a nail-sealable waterproof membrane and method of manufacturing the roofing underlay are described. The roofing underlay includes a main layer formed of a fibrous non-woven material including a plurality of continuous randomly oriented entangled fibers. An anti-slip layer and an anti-skid layer are bonded to the main layer. The main layer is compressed between the anti-slip layer and the anti-skid layer to create a nail-sealable waterproof membrane via capillary action of the continuous randomly oriented entangled fibers of the main layer.

Disclosed is a device for containing granular elements, comprising a metal mesh panel having metal wires welded together, the panel presenting at least one curvature of a first orientation and at least one curvature of a second orientation, the first orientation being characterized by a first axis and the second orientation being characterized by a second axis, the first axis and the second axis being non-collinear.

The invention provides acid and alkali resistant geotechnical cloth and a preparation method thereof. The acid and alkali resistant geotechnical cloth is prepared from the following raw materials in parts by weight: 25 to 35 parts of PBT-PETG epoxy interpenetrating copolymer, 15 to 25 parts of PBS-orthophthalic UP hydroxyl cross-linked copolymer, 12 to 20 parts of silane modified basalt fiber, 4 to 8 parts of composite blocking agent, 2 to 5 parts of anti-aging filler, 4 to 9 parts of flexibility regulator, 1.2 to 2.3 parts of flame retardant, 2.5 to 4.5 parts of pore filler, 0.5 to 1.2 parts of antioxidant and 0.3 to 0.8 part of ultraviolet screening agent. According to the invention, the PBT-PETG epoxy interpenetrating copolymer constructs an acid-alkali-crosslinking integrated matrix, which is the core of corrosion resistance and mechanics; the PBS-orthophthalic UP hydroxyl cross-linked copolymer enhances the flexibility and interface combination, and solves the brittleness problem of a matrix; the two components cooperate with the composite blocking agent, so that the acid-base permeability is greatly reduced, the weather-proof retention rate is greatly improved, and the service life of the geotechnical cloth is prolonged.

An artificial turf wrapping yarn made of polyethylene or polyethylene-polyamide polymer mixture with a compatibilizer. The wrapping yarn is adapted for wrapping around a plurality of turf fiber monofilaments to form a bundle of the turf fiber monofilaments and protect their integrity during securing the bundle of the turf fiber monofilaments to a carrier of the artificial turf.

A system, apparatus and methods for forming tufted products can include a tufting machine for forming patterned tufted products, such as carpets, rugs, and artificial grass or turf product with logos of other designs including multiple colors of yarns integrated therein. The tufting machine can include a series of hollow needles arranged along a needle bar at a gauge spacing and can receive a series of different color and / or types of yarns from a yarn feed system. A yarn selection system can be controlled to selectively hold back or retract yarns from the needles. The needles will be reciprocated into and out of a backing to deliver a series of yams into the backing and can be engaged by corresponding knives to form tufts of yarns.

Disclosed is a method of manufacturing an artificial turf (200), the method comprising: • - manufacturing (222) a hot-texturized yarn by texturizing a first yarn at a first temperature; • - manufacturing (224) a low-temperature-texturized yarn by texturizing a second yarn at a second temperature, the second temperature being lower than the first temperature; • - integrating (226) the hot-texturized yarn, the low-temperature- texturized yarn and a non-texturized yarn into a carrier (202); • - cutting (228) the integrated yarns to form low-temperature- texturized fibers (206), hot-texturized fibers (204) and non- texturized fibers (208) extending from the carrier; • - exposing (230) the carrier with the texturized and non-texturized fibers to a third temperature to cause the hot-texturized fibers to shrink and the low-temperature-texturized fibers to expand; • - after exposition to the third temperature, providing (232) the carrier with the texturized and non-texturized fibers as the artificial turf.

Disclosed are geotextiles configured for moisture management. In exemplary embodiments, a geotextile comprises a plurality of structural elements including one or more yarns, cords, or filament bundles arranged to form a fabric or grid. At least a portion of the structural elements include capillary-active surfaces and / or are configured to promote capillary wicking of moisture along at least one direction of the geotextile. At least a portion of the structural elements include internal void regions configured to maintain hydraulic conductivity under compaction. The geotextile is operable for providing dual-mode moisture transport through both capillary wicking and hydraulic flow thereby allowing for removal and redistribution of water from pavement layers and subgrade soils.

The invention relates to a tufting unit for a tufting machine, wherein the tufting unit comprises a thread supply device, a plurality of insertion elements, a thread transport gripper, a cutting unit and a thread retention unit. The thread retention unit is designed to independently retain a thread strand of a distributed thread portion below each insertion element. The invention also relates to a corresponding method for inserting a thread portion.

The present invention aims to provide a non-woven fabric having a smooth surface and an excellent adhesive force with respect to an adhesive tape, for example, a waterproof tape. The present invention is about a non-woven fabric made from fibers containing a thermoplastic resin as a principal component and having a thickness CV value of 1.0% or more to 10.0% or less, a porosity seen from the surface of 10% or more to 30% or less, and a porosity seen from the surface CV value of 10% or more and 30% or less.

A system, apparatus and methods for forming tufted products can include a tufting machine for forming patterned tufted products, such as carpets, rugs, and artificial grass or turf product with logos of other designs including multiple colors of yarns integrated therein. The tufting machine can include a series of hollow needles arranged along a needle bar at a gauge spacing and can receive a series of different color and / or types of yarns from a yarn feed system. A yarn selection system can be controlled to selectively hold back or retract yarns from the needles. The needles will be reciprocated into and out of a backing to deliver a series of yarns into the backing and can be engaged by corresponding knives to form tufts of yarns.

The present application provides a kind of buffering and slow pressure non-woven spacer fabric, its processing device and method, buffering and slow pressure non-woven spacer fabric includes negative Poisson ratio material particles and built-in auxetic structure or adds auxetic particle.Belong to textile material and technical field.The present application passes through built-in auxetic structure in spacer fabric, and the shaped auxetic structure enters in auxetic structure passage, is in the interior of spacer fabric, so that spacer fabric has buffering and slow pressure capacity.Spacer fabric made of auxetic structure material and polyester fiber has the characteristics of high specific strength, large specific stiffness, strong designability, also has the advantages of high negative Poisson ratio structure shear modulus, strong energy absorption capacity, etc., has great development potential in protective clothing, building materials, automotive interiors, sports equipment and other fields.

A manufacturing apparatus for double-sided yarn for artificial turf is provided. In one embodiment, the apparatus may include a first liquid supply pipe to which molten first liquid is supplied, a second liquid supply pipe arranged in a space physically separated from the first liquid supply pipe to which molten second liquid is supplied, and a junction where the first liquid that flowed in through the first liquid supply pipe and the second liquid that flowed in through the second liquid supply pipe merge.

A woven silt fence fabric is configured to have: a tensile strength greater than 140 pounds per ASTM D-4632 in the machine direction (MD); a tensile strength greater than 140 pounds per ASTM D-4632 in the cross machine direction (CMD) per ASTM D-4632; and one or more parameter(s) (per an ASTM test method) in the machine direction (MD) equal or approximately equal to the one or more parameter(s) (per the ASTM test method) in the cross machine direction (CMD). The woven silt fence fabric includes one or more marker yarns having a different color than adjacent yarn(s) to thereby identify one or more of a grade line, an install line, a monitor line, and / or a high visibility line.

Disclosed are exemplary embodiments of woven silt fence fabrics. In exemplary embodiments, the woven silt fence fabric may include two or more different warp yarns having different cross-sectional shapes in the machine direction and / or two or more different fill yarns having different cross-sectional shapes in the cross-machine / transverse direction. In exemplary embodiments, the woven silt fence fabric may comprise a high-strength high-modulus monofilament woven silt fence fabric.

The present invention addresses the problem of providing a non-woven fabric that has a smooth surface and has excellent adhesion to adhesive tapes such as waterproof tapes.　The present invention is a non-woven fabric that comprises fibers that include a thermoplastic resin as a principal component. The non-woven fabric has a thickness CV value of 1.0%–10.0%, a surface porosity of 10%–30%, and a surface porosity CV value of 10%–30%.