216 results about "Felted" patented technology

A process for making absorbent sheet includes: (a) depositing an aqueous furnish of cellulosic fiber on a forming fabric; (b) dewatering the wet web to a consistency of from about 15 to about 40 percent; (c) transferring the dewatered web from the forming fabric to another fabric traveling at a speed of from about 10 to about 80 percent slower than the forming fabric; (d) wet-shaping the web on an impression fabric whereby the web is macroscopically rearranged to conform to the surface of the impression fabric; and (e) impingement air drying the web. The process is particularly suitable for making high bulk products form difficult to process furnishes such as recycle furnishes and for making high basis weight products without compressive dewatering with a papermaking felt.

A device for controlling relative humidity in an environment with a solidified humectant composition. The solidified humectant composition is made from a humectant salt, water, and a carrier. The solidified humectant may be formed into a tablet with the aid of a binder, or it may be contained within a thermoformed felt material, a sachet, or a water permeable canister. In a preferred embodiment, the sachet is made of a micro-perforated polyester/paper/polyethylene material. Preferred humectant salts include CaCl₂, K₂CO₃, LiCl₂, NaCl, K₂SO₄, and combinations thereof. A preferred embodiment of the present invention includes the use of one or more of: an antimicrobial agent, activated carbon, a volatile organic, a moisture adsorber and an oxygen absorber, in combination with the solidified humectant salt.

Consolidated, layered composites having high penetration resistance to both bullets and fragments are described. The composites comprise, in order, a first non-woven fabric comprising one or a plurality of unidirectionally oriented high tenacity fibrous layers, a felt material comprising high tenacity felt fibers, and a second non-woven fabric comprising one or a plurality of unidirectionally oriented high tenacity fibrous layers. The non-woven fabrics and intermediate felt material are consolidated at facing lateral surfaces.

The present invention relates to a process of forming a soft bulky nonwoven web from a batt using thermobonding and to a soft bulky nonwoven web with a bond impression pattern and shape. The process comprises several steps including feeding a batt to a nip between first and second surface of first and second roller, where at least the first of the surfaces comprises spaced apart bonding protrusions surrounded by recessed areas. The bonding protrusions and the bond impression shape in the web exhibit a ratio of the greatest measurable width to the greatest measurable length of at least 1:2.5 and the perimeters thereof comprise a convex portion. The bonding protrusions are symmetric and/or have a certain angle to the machine direction.

A fiber cement felt includes a fabric and a batt layer. The fabric includes: a set of fine top machine direction yams; a set of coarse bottom machine direction yarns; and a set of fine cross machine direction yams interwoven with the top and bottom machine direction yams in a plurality of repeat units. The batt layer overlies and is attached to the set of top machine direction yams of the fabric. The fineness of the yams of the top machine direction yams and the cross machine direction yams can improve the surface achieved with other fiber cement felts

An ester polyurethane foam is prepared by reacting a mixture of one or more polyester polyols with one or more isocyanates and one or more silicone surfactants in the presence of a blowing agent, such as water, and other additives, such as catalysts. The cured foam is chemically treated in a caustic solution and is then felted (compressed under heat and pressure) to form a hydrophilic ester polyurethane foam having a water absorption rate of at least 30 pounds of water per square foot per minute (1.44 kPa/min). The foam also has greater water holding capacity and wet strength than cellulose.

The present invention provides a novel nonwoven felt fabric, which is made of at least one low-melting-point short fiber and at least one high-melting-point short fiber of same type or different types, wherein the fabric is stiff enough to be self-sustaining and have the ability of shape maintenance. The felt fabric exhibits excellent pleatability, moldability and compressive strength. The invention also provides a method for producing the felt fabric, and a filter comprising the felt fabric used as the material of a filter medium of the filter, wherein the filter medium requires no support structure to stand alone and persistently retains its shape.

The invention provides a method and a device for processing fabric surface functionality. According to the method and the device, a diluted surface treatment solution is sprayed on the front face and the back face of the fabric by means of a special device by using a spraying and rolling combined method; the special device comprises a fabric conveying roller, a winding roller, a pair of extruding roller, and a plurality of sprayers arranged on and below the extruding rollers; a layer of hair felt or cellulose needled felt, which has excellent hygroscopicity or capillary core absorbing function and is capable of absorbing and maintaining a certain amount of diluted surface treatment liquid, is coated on the surface of each extruding roller; the fabrics run through the extruding rollers in an open-width status. By controlling the fabric speed, the spraying amount and the pressure of the extruding rollers, the surface treatment liquid is enabled to permeate into the front face and the back face of the fabric under the control. The fabrics processed by the method provided by the invention are unlikely to harden after being dried, and the original softness, the air permeability and the hygroscopicity of the fabrics can be held.

A rocket motor ablative material (e.g., an insulation liner, bulk material, or the like) of this invention is formed from, as a precursor of the carbon reinforcement structure, one or more polyarylamides configured as a suitable reinforcing structure, such as a yarn, flock, and/or felt. Aramid yarns can be prepared by twisting/spinning aramid filaments, and/or by carding and yarn-spinning staple aramid fibers. In particular, the insulation may be used, for example, for a rocket motor nozzle or as a rocket motor heat shield subjected to conditions comparable to those of continuous filament viscose rayon.

The invention relates to a sheath-core type low-melting-point copolyamide composite fiber and a preparation method thereof. The sheath of the composite fiber is copolyamide, the core is polyolefin, the melting point of the sheath ranges from 90 DEG C to 130 DEG C, the melting point of the core ranges from 130 DEG C to 190 DEG C, the breaking strength is in a range of 1.8-3.4 cN/dtex, and the elongation at break is in a range of 50%-90%. The preparation method of the composite fiber comprises steps as follows: copolyamide slices and polyolefin slices are dried and molten respectively and then ejected by a same composite assembly to form filaments, and the composite fiber is prepared through cooling, oiling, draft setting and winding into rolls. The sheath can be molten at the lower temperature through heat setting or ironing and plays a role in bonding and fixing the fiber, and the core is the polyolefin and can keep certain strength and flexibility at the temperature; compared with single-component low-melting-point fibers, the fiber has the advantages that the core is the polyolefin, the production cost can be reduced, and the economic benefit can be increased. The composite fiber can be applied to shoe upper fabric, felt, curtain fabric, garment cuffs and collars, the paper industry, automobile interiors and the like.

This invention addresses the problem of providing a lightweight felt material that is soft, highly sound-absorbent and flame-retardant, and suitable as an interior material for an automobile or other vehicle, industrial material, clothing material, or another such material. This lightweight felt material (1) has a nonwoven sheet (5) interposed between two hard cotton layers (2, 3) so as to integrate the overall material, wherein: 20-80% of an ultrafine fiber having a fineness of 1.1 dtex or less, 10-60% of a hollow fiber for imparting bulkiness, and 10-60% of a low-melting-point fiber which melts when the overall material is thermally treated are fiber-blended in each of the two hard cotton layers (2, 3); and the nonwoven sheet (5) has a fiber diameter of 2-20 μm and a basis weight of 20-100 g/m2.

The invention provides a sound-absorption heat-insulation flame-retardant composite material used for a vehicle. The material comprises rubber, felt, non-woven fabric and aluminum foil. The rubber, the felt, the non-woven fabric and the aluminum foil are combined as a whole body by bonding and pressing at a high temperature in sequence. The manufacturing process comprises the following steps: firstly bonding the rubber, the felt and the non-woven fabric in sequence through a wood glue adhesive, then conducing the pressing at the high temperature, and pressing and shaping with the aluminum foil at the high temperature. The main control conditions are as follows: (1) material thickness: the thickness of the rubber is 1 to 3mm, the thickness of the felt is 12-18mm, the thickness of the non-woven fabric is 1-2.5mm, and the thickness of the aluminum foil is 0.6-1.0mm; and (2) the control indexes of high temperature pressing: the temperature of an upper plate of the mould is 140 DEG C to 220 DEG C, the temperature of a lower plate of the mould is 130 DEG C to 190 DEGC, the pressure of a main cylinder is 16MPa, the control pressure is 4-6MPa, the slide stroke is 320-360mm, the holding time is 190-290s, the decompression time is 1.5-2.5s, and the whole shaping period is 300-450s.

The invention provides a light emitting tufted carpet (1). The carpet (1) comprises a primary backing layer (100), an optional secondary backing layer (200), an optional adhesive layer (300), a plurality of carpet integrated LEDs (40) arranged to generate carpet light (41), and a first electric conductor (10) and a second electric conductor (20). The first electric conductor (10) and the second electric conductor (20) are arranged to provide power from a power source (50) to the LEDs (40). The primary backing layer (100) comprises a first felt layer (30′), or the optional secondary backing layer (200) comprises second felt layer (30″), or both the primary backing layer (100) and the optional secondary backing layer (200) comprise felt layers (30′,30″). One or more of the first electric conductor (10) and the second electric conductor (20) are at least partially integrated in one or more of the first felt layer (30′) and the second felt layer (30″).

The invention discloses a manufacturing method of a novel negative-ion self-cleaning active carbon fiber. The manufacturing method comprises the following steps: adding nano titanium dioxide powder into common plant cellulose pulp; simultaneously, adding nano tourmaline powder bodies into the common plant cellulose pulp; weaving the pulp added with the titanium dioxide powder and the nano tourmaline powder bodies into long yarns or short yarns according to conventional process; weaving functional long yarns into plant cellulose cloth, and needling the short yarns into a felt or non-woven cloth form; and carrying out functional fiber carbonization and activated nano-pore opening treatment on the manufactured plant cellulose cloth and the felt or non-woven cloth, so as to obtain the novel nano active carbon fiber. The manufacturing method disclosed by the invention has the advantages that the novel active carbon fiber with the high filtering and absorption, a far-infrared function and capabilities of releasing negative ions and catalyzing and decomposing organisms adhered to the surface is obtained by adding the nano tourmaline powder bodies capable of generating the negative ions and the nano titanium dioxide powder with the photocatalytic action in the manufacturing process of the nano active carbon fiber.

A separator is made of a porous material and is intended to treat gaseous effluents which contain particles whose size is substantially less than one micrometer or of the order of one micrometer. The porous material includes channels. The channels are delimited by a fibrous porous material such as batting.

A papermaking felt which, in a papermaking machine, has good water squeezing capability (water permeability) and durability with regard to flattening and which also has excellent wet paper web smoothing properties and resistance to fiber loss. The papermaking felt is made by stacking and intertwiningly integrating by needling a substrate, a first batt fiber layer disposed on the wet paper web side of the substrate, and a second batt fiber layer disposed on the machine side of the substrate; wherein the substrate is made from a plurality of reinforcing materials, the reinforcing materials include a spunyarn, and due to the intertwining with a batt fiber layer, the spunyarn is integrated to such a degree that the yarn shape disappears.

The invention relates to a roll surface cleaning method and a device therefore, which are mainly applied to metal plate and strip production machine sets. The roll surface cleaning method is characterized by comprising that: a roll to be cleaned is compressed with a wiping clock of which the outside is covered with felt or non-woven fabrics (and the compression is realized by lifting the roll or swinging the wiping block); the roll begins to rotate; the felt or the non-woven fabrics reciprocates linearly under the driving of a transverse shift driving mechanism; and through the rotation of the roll and linear reciprocation of the felt and the non-woven fabrics, the felt or the non-woven fabrics can contact various positions on the roll surface so as to complete cleaning of the roll surface. The invention frees laborers from the production, uses machines to replace manpower, can effectively clean the roll surface, lighten labor intensity of workers, and improve work efficiency and product quality, and has high cleaning efficiency. The roll surface cleaning device has a simple and reliable structure.