Patent classifications
D04H3/033
SYSTEM AND PROCESS FOR PREPARING A FIBROUS NONWOVEN COMPOSITE FABRIC
A system having a first polymer source and a spin beam in fluid communication with the first polymer source is provided. The spin beam includes a spinneret assembly having filament nozzles configured and arranged to extrude a plurality of filaments of a first polymer. A gas distribution plate is disposed downstream of the spinneret assembly, and includes a plurality of gas distribution slots that are configured and arranged to receive two or more corresponding filament nozzles of the spinneret assembly therein. A stream of gas is introduced into the plurality of slots to draw and attenuate the filaments extruded by the plurality of filament nozzles. The drawn and attenuated filaments are collected on a collection surface disposed downstream of the gas distribution plate to form a nonwoven fabric. A solid additive, such as pulp fibers may be blended with the filaments prior to collecting the filaments on the collection surface.
SYSTEM AND PROCESS FOR PREPARING A FIBROUS NONWOVEN COMPOSITE FABRIC
A system having a first polymer source and a spin beam in fluid communication with the first polymer source is provided. The spin beam includes a spinneret assembly having filament nozzles configured and arranged to extrude a plurality of filaments of a first polymer. A gas distribution plate is disposed downstream of the spinneret assembly, and includes a plurality of gas distribution slots that are configured and arranged to receive two or more corresponding filament nozzles of the spinneret assembly therein. A stream of gas is introduced into the plurality of slots to draw and attenuate the filaments extruded by the plurality of filament nozzles. The drawn and attenuated filaments are collected on a collection surface disposed downstream of the gas distribution plate to form a nonwoven fabric. A solid additive, such as pulp fibers may be blended with the filaments prior to collecting the filaments on the collection surface.
Fibrous nonwoven and method for the production thereof
The invention relates to a fibrous nonwoven, in particular for a filter medium, having a first layer, wherein at least one single-piece fiber strand of said first layer has a first fiber portion and a second fiber portion in the longitudinal direction, and wherein the fiber strand has a thickening substantially in said second fiber portion.
Fibrous nonwoven and method for the production thereof
The invention relates to a fibrous nonwoven, in particular for a filter medium, having a first layer, wherein at least one single-piece fiber strand of said first layer has a first fiber portion and a second fiber portion in the longitudinal direction, and wherein the fiber strand has a thickening substantially in said second fiber portion.
Method and apparatus for making a nonwoven from continuous filaments
An apparatus for making nonwoven from continuous filaments has a spinner for spinning the filaments, a cooler for cooling the spun filaments, and a mesh belt that moves in a generally horizontal travel direction and that passes through a deposition location where the spun and cooled filaments are deposited on the mesh belt to form thereon a nonwoven web. A nose roller defines a deflection zone over which the mesh belt is deflected from its travel direction downstream of the deposition location. At least one lift roller above the mesh belt downstream of the deposition location separates the nonwoven web from the mesh belt at a separation location at a first spacing upstream from the deflection zone of the nose roller. A treatment device for the nonwoven web is provided downstream of the mesh belt in the travel direction and receiving the nonwoven web from the lift roller.
Method and apparatus for making a nonwoven from continuous filaments
An apparatus for making nonwoven from continuous filaments has a spinner for spinning the filaments, a cooler for cooling the spun filaments, and a mesh belt that moves in a generally horizontal travel direction and that passes through a deposition location where the spun and cooled filaments are deposited on the mesh belt to form thereon a nonwoven web. A nose roller defines a deflection zone over which the mesh belt is deflected from its travel direction downstream of the deposition location. At least one lift roller above the mesh belt downstream of the deposition location separates the nonwoven web from the mesh belt at a separation location at a first spacing upstream from the deflection zone of the nose roller. A treatment device for the nonwoven web is provided downstream of the mesh belt in the travel direction and receiving the nonwoven web from the lift roller.
DEVICE FOR DRAWING FILAMENTS TO FORM A NONWOVEN FABRIC
A device draws filaments to form a nonwoven fabric. The device has a nozzle carrier, the nozzle carrier having an elongated drawing channel, wherein the drawing channel comprises a filament inlet and a filament outlet, the drawing channel being provided on opposite sides with air nozzles generating a downward air flow, the air nozzles being connected to an air chamber on both sides of the nozzle carrier through an air channel, a rectification device being provided between the air channel and the air chamber, the rectification device having at least one rectification chamber, a rectification wall of the at least one rectification chamber being provided to be partially ventilated. The air flow is temporarily confined in a small space by the space restriction of the rectification chamber, and as air flows, the air flows out of the partially ventilated area, which acts as a “combing” of the air flow.
SYSTEM AND METHOD OF MAKING A MESH CUSHION
A method of making a mesh cushion. The method includes extruding a material through a plurality of filament forming openings in at least one die plate to form a plurality of filaments. The filaments may be at least partially submerged into a fluid to cool and harden the filaments into the mesh cushion.
BREATHABLE AND WATERPROOF NON-WOVEN FABRIC, MANUFACTURING METHOD OF BREATHABLE AND WATERPROOF NON-WOVEN FABRIC, AND BREATHABLE AND WATERPROOF CLOTH
A breathable and waterproof non-woven fabric is manufactured by a manufacturing method including the following steps. Performing a kneading process on 87 to 91 parts by weight of a polyester, 5 to 7 parts by weight of a water repellent, and 3 to 6 parts by weight of a flow promoter to form a mixture, in which the polyester has a melt index between 350 g/10 min and 1310 g/10 min at a temperature of 270° C., and the mixture has a melt index between 530 g/10 min and 1540 g/10 min at a temperature of 270° C. Performing a melt-blowing process on the mixture, such that the flow promoter is volatilized and a melt-blown fiber is formed, in which the melt-blown fiber has a fiber body and the water repellent disposed on the fiber body with a particle size (D90) between 350 nm and 450 nm.
BREATHABLE AND WATERPROOF NON-WOVEN FABRIC, MANUFACTURING METHOD OF BREATHABLE AND WATERPROOF NON-WOVEN FABRIC, AND BREATHABLE AND WATERPROOF CLOTH
A breathable and waterproof non-woven fabric is manufactured by a manufacturing method including the following steps. Performing a kneading process on 87 to 91 parts by weight of a polyester, 5 to 7 parts by weight of a water repellent, and 3 to 6 parts by weight of a flow promoter to form a mixture, in which the polyester has a melt index between 350 g/10 min and 1310 g/10 min at a temperature of 270° C., and the mixture has a melt index between 530 g/10 min and 1540 g/10 min at a temperature of 270° C. Performing a melt-blowing process on the mixture, such that the flow promoter is volatilized and a melt-blown fiber is formed, in which the melt-blown fiber has a fiber body and the water repellent disposed on the fiber body with a particle size (D90) between 350 nm and 450 nm.