Class / Patent application number | Description | Number of patent applications / Date published |
442400000 | Melt-blown nonwoven fabric | 26 |
20080287025 | Nonwovens, Method for the Production Thereof and the Use Thereof - The invention relates to a method for the production of nonwovens, in which a solution of cellulose carbamate in N-methylmorpholine-N-oxide is forced through the holes of a nozzle beam and is stretched by a multiple by means of an airflow. The fibre curtain which is formed is laid down on a perforated conveyer belt, washed and dried. The invention likewise relates to nonwovens of this type and the use thereof. | 11-20-2008 |
20090068914 | NONWOVEN FABRICS AND LAMINATES MADE BY USING THE SAME - A nonwoven fabric containing a polyvinyl butyral fiber is provided. In particular, continuous fiber nonwoven fabrics, such as a melt-blown nonwoven fabric and a spunbonded nonwoven fabric, are preferred. By laminating a plurality of layers via an adhering layer made of such a nonwoven fabric and then heating, a laminate is obtained by a simple process. In particular, an interior material in which an inorganic fiber layer, a foam layer and a surface material layer are adhered together via the aforementioned type of adhering layers is a desirable embodiment. Such an interior material is excellent in rigidity, sound absorbency and thermal deformation resistance, and therefore is useful as an interior material to be used for cars, railway vehicles, vessels, and the like. | 03-12-2009 |
20090258561 | CELLULOSE CARBAMATE SPINNING SOLUTION, METHOD FOR PRODUCING A CELLULOSE CARBAMATE NONWOVEN, AND USE OF THE SAME - The present invention relates to a cellulose carbamate spinning solution, the cellulose carbamate being dissolved in an ionic liquid. The invention relates furthermore to a method for the production of nonwovens in which the cellulose carbamate spinning solution is pressed through the holes of a nozzle bar and stretched by a multiple by means of an air flow. The formed fibre curtain is laid on a perforated conveyer belt, washed and dried. Likewise, the invention relates to nonwovens of this type and also the use thereof. | 10-15-2009 |
20090264040 | Copolymers of Epsilon-Caprolactone and Glycolide for Melt Blown Nonwoven Applications - Copolymers exhibiting the following combinations of properties, including without limitation, ε-caprolactone in an amount ranging from about 12 to about 70 mole percent, glycolide in an amount ranging from about 30 to about 88 mole percent, crystallinity ranging from about 10 to about 50% as measured by WAXD or about 10 to about 50 J/g as measured by DSC, and an inherent viscosity ranging from about 0.5 to about 1.45 dL/g as measured in a 0.1 g/dl solution of HFIP at 25° C.; a method for melt blowing such copolymers and nonwoven constructs produced therefrom are described herein. | 10-22-2009 |
20090305594 | Fibers Formed from Aromatic Polyester and Polyether Copolymer - A method for forming a fiber is provided. The method comprises supplying at least one aromatic polyester to a melt processing device and modifying the aromatic polyester with at least one polyether copolymer within the device to form a thermoplastic composition having a melt flow rate that is greater than the melt flow rate of the aromatic polyester. The polyether copolymer contains a repeating unit (A) having the following formula: | 12-10-2009 |
20090311937 | BIODEGRADABLE POLYLACTIC ACID FOR USE IN NONWOVEN WEBS - A method for forming a biodegradable polylactic acid suitable for use in fibers is provided. In one embodiment, for example, a polylactic acid is melt blended with an alcohol to initiate an alcoholysis reaction that results in a polylactic acid having one or more hydroxyalkyl or alkyl terminal groups. By selectively controlling the alcoholysis conditions (e.g., alcohol and polymer concentrations, catalysts, temperature, etc.), a modified polylactic acid may be achieved that has a molecular weight lower than the starting polylactic acid. Such lower molecular weight polymers also have the combination of a higher melt flow index and lower apparent viscosity, which is useful in a wide variety of fiber forming applications, such as in the meltblowing of nonwoven webs. | 12-17-2009 |
20100029162 | EXTENSIBLE POLYPROPYLENE-BASED NONWOVENS - Disclosed herein is a nonwoven fabric comprising within the range of from 50 to 99 wt %, by weight of the composition, of a reactor grade propylene-α-olefin copolymer possessing within the range of from 5 to 35 wt %, by weight of the copolymer, of units derived from one or more of ethylene and/or C | 02-04-2010 |
20100048081 | BIODEGRADABLE POLYESTERS FOR USE IN FORMING FIBERS - A method for forming a biodegradable polyester suitable for use in fibers is provided. Specifically, a biodegradable polyester is melt processed at a controlled water content to initiate a hydrolysis reaction. Without intending to be limited by theory, it is believed that the hydroxyl groups present in water are capable of attacking the ester linkage of the polyester, thereby leading to chain scission or “depolymerization” of the polyester molecule into one or more shorter ester chains. By selectively controlling the reaction conditions (e.g., water content, temperature, shear rate, etc.), a hydrolytically degraded polyester may be achieved that has a molecular weight lower than the starting polymer. Such lower molecular weight polymers have a higher melt flow rate and lower apparent viscosity, which are useful in a wide variety of fiber forming applications, such as in the meltblowing of nonwoven webs. | 02-25-2010 |
20100048082 | BIODEGRADABLE POLYLACTIC ACIDS FOR USE IN FORMING FIBERS - A method for forming a biodegradable polylactic acid suitable for use in fibers is provided. Specifically, a polylactic acid is melt processed at a controlled water content to initiate a hydrolysis reaction. Without intending to be limited by theory, it is believed that the hydroxyl groups present in water are capable of attacking the ester linkage of polylactic acids, thereby leading to chain scission or “depolymerization” of the polylactic acid molecule into one or more shorter ester chains. The shorter chains may include polylactic acids, as well as minor portions of lactic acid monomers or oligomers, and combinations of any of the foregoing. By selectively controlling the hydrolysis conditions (e.g., moisture and polymer concentrations, temperature, shear rate, etc.), a hydrolytically degraded polylactic acid may be achieved that has a molecular weight lower than the starting polymer. Such lower molecular weight polymers have a higher melt flow rate and lower apparent viscosity, which are useful in a wide variety of fiber forming applications, such as in the meltblowing of nonwoven webs. | 02-25-2010 |
20100159777 | Thermoplastic Starch Formed from an Enzymatically Debranched Starch - A thermoplastic starch for use in a melt-processed composition (e.g., fiber, nonwoven web, etc.) is provided. The thermoplastic starch contains an enzymatically debranched starch and a plasticizer. By selectively controlling certain parameters of the enzymatic modification process (e.g., temperature, enzyme and starch concentrations, reaction time, isolation method, etc.), the present inventors have discovered that a native starch may be hydrolyzed in a highly efficient manner to form compositions having a comparably lower weight average molecular weight and viscosity, which are particularly suitable for use in the formation of thermoplastic starches for use in melt processing applications. | 06-24-2010 |
20100159778 | CONFORMABLE ATTACHMENT STRUCTURE FOR FORMING A SEAL WITH THE SKIN - The present invention is directed to an article suitable for attachment to the skin of a user, the article including a compressible material and a means for attaching the compressible material to skin, wherein the compressible material has Compressibility under a 1.4 kilopascal load greater than about 14 percent, and further wherein the compressible material has an Initial Shear Modulus in a first direction less than about 200 kilopascals. | 06-24-2010 |
20100159779 | MULTIFUNCTIONAL ANTISTATIC NON-WOVEN FABRIC AND FABRICATION METHOD THEREOF - The invention provides a conductive powder composite including a bamboo charcoal powder pre-processed with a pulverizing procedure and a refining procedure of 900 to 1500° C. and a conductive carbon black powder, wherein the bamboo charcoal powder and the conductive carbon black powder are blended by a high speed mechanical granulating machine to form the conductive powder composite. The conductive powder composite can simultaneously and effectively improve the poor conductivity of the bamboo charcoal powder and the embrittlement characteristic of the conductive carbon black powder in the conventional technology. The invention also provides a conductive masterbatch and a fabrication method thereof, and a multifunctional antistatic non-woven fabric and a fabrication method thereof. | 06-24-2010 |
20100323575 | BIODEGRADABLE FIBERS FORMED FROM A THERMOPLASTIC COMPOSITION CONTAINING POLYLACTIC ACID AND A POLYETHER COPOLYMER - A biodegradable fiber for use in forming a nonwoven web is provided. The fiber is formed from a thermoplastic composition comprising at least one polylactic acid in an amount from about 75 wt. % to about 99 wt. % and at least one polyether copolymer in an amount from about 1 wt. % to about 25 wt. %, wherein the polyether copolymer contains from about 40 mol. % to about 95 mol. % of a repeating unit (A) having the following formula. wherein, x is an integer from 1 to 250, the polyether copolymer further containing from about 5 mol. % to about 60 mol. % of a repeating unit (B) having the following formula. wherein, n is an integer from 3 to 20; and y is an integer from 1 to 150. Such polyether copolymers have been found to improve a variety of characteristics of the resulting thermoplastic composition, including its ability to be melt processed into fibers and webs, as well as its sensitivity to moisture. | 12-23-2010 |
20100330861 | HYDROPHOBIC ADDITIVE FOR USE WITH FABRIC, FIBER, AND FILM - The present invention relates to a hydrophobic additive for use with fabric, fiber, and film. One aspect of the present invention comprises a master batch composition for use in preparing a non-woven fabric in order to increase the hydrophobicity of the non-woven fabric. In one embodiment, the master batch composition includes a polymer and a lipid ester. The lipid ester comprises from 10 wt. % to 40 wt. % of the master batch. The fabric, when including the master batch composition, has a contact angle ranging from 100° to 125° when measured according to test method ASTM D2578. | 12-30-2010 |
20110021104 | PH-ADJUSTING TEXTILE CONTAINING AMPHOTERIC POLYMER COMPOSITE NANOPARTICLES - Amphoteric polymer composite nanoparticles are added into the polymer grains of synthetic fibers. The synthetic fibers are woven to form a textile capable of adjusting pH value. | 01-27-2011 |
20110076907 | Apparatus and method for melt spun production of non-woven fluoropolymers or perfluoropolymers - Disclosed is an apparatus, process, and product allowing for the manufacture of non-woven fluoropolymers, perfluoropolymers, and high temperature engineering resin filaments obtained from low melt index polymers. The fibers have continuous structural integrity created by using a heated duct that provides for maintaining an elevated filament temperature during filament draw down. The apparatus allows for entanglement and melt bonding of the fluoropolymers perfluoropolymers, and high temperature engineering resin filaments. | 03-31-2011 |
20110130063 | SPINNING APPARATUS, APPARATUS AND PROCESS FOR MANUFACTURING NONWOVEN FABRIC, AND NONWOVEN FABRIC - Provided are a spinning apparatus capable of stably spinning fibers having a small fiber diameter with a high productivity, an apparatus comprising the same for manufacturing a nonwoven fabric, a process for manufacturing a nonwoven fabric using the nonwoven fabric manufacturing apparatus, and a nonwoven fabric produced by the process. | 06-02-2011 |
20120088424 | DIMENSIONALLY STABLE NONWOVEN FIBROUS WEBS AND METHODS OF MAKING AND USING THE SAME - Dimensionally stable nonwoven fibrous webs include a multiplicity of continuous fibers formed from one or more thermoplastic polyesters and polypropylene in an amount greater than 0% and no more than 10% by weight of the web. The webs have at least one dimension which decreases by no greater than 10% in the plane of the web when heated to a temperature above a glass transition temperature of the fibers. When the thermoplastic polyester is selected to include aliphatic and aromatic polyesters, a spunbond process may be used to produce substantially continuous fibers that exhibit molecular orientation. When the thermoplastic polyester is selected from aliphatic polyesters, a meltblown process may be used to produce discontinuous fibers that do not exhibit molecular orientation. The webs may be used as articles for filtration, sound absorption, thermal insulation, surface cleaning, cellular growth support, drug delivery, personal hygiene, medical apparel, or wound dressing. | 04-12-2012 |
20120149273 | APPARATUS, SYSTEM, AND METHOD FOR FORMING NANOFIBERS AND NANOFIBER WEBS - A nozzle, die, apparatus, system and method for forming a fiber population having a median diameter less than one micrometer, and nonwoven fibrous webs including a population of such sub-micrometer fibers. The nozzle includes a first conduit having a first terminal end, a second conduit positioned coaxially around the first conduit and having a second terminal end proximate the first terminal end, wherein the first and second conduit form an annular channel between the first and second conduit, and additionally wherein the first terminal end extends axially outwardly beyond the second terminal end. The die includes at least one such nozzle, and the apparatus and system include at least one such die. Methods of making nonwoven fibrous webs including a population of sub-micrometer fibers, and articles including such nonwoven fibrous webs, are also disclosed. | 06-14-2012 |
20120171919 | COFORM NONWOVEN WEB FORMED FROM MELTBLOWN FIBERS INCLUDING PROPYLENE/ALPHA-OLEFIN - A coform nonwoven web that contains a matrix of meltblown fibers and an absorbent material is provided. The meltblown fibers are formed from a thermoplastic composition that contains at least one propylene/α-olefin copolymer of a certain monomer content, density, melt flow rate, etc. The selection of a specific type of propylene/α-olefin copolymer provides the resulting composition with improved thermal properties for forming a coform web. For example, the thermoplastic composition crystallizes at a relatively slow rate, thereby allowing the fibers to remain slightly tacky during formation. This tackiness may provide a variety of benefits, such as enhancing the ability of the meltblown fibers to adhere to the absorbent material during formation of the coform web. In certain embodiments, the coform web may also be imparted with texture using a three-dimensional forming surface. In such embodiments, the slow crystallization rate of the meltblown fibers may increase their ability to conform to the contours of the three-dimensional forming surface. Once the fibers crystallize, however, the meltblown fibers may achieve a degree of stiffness similar to conventional polypropylene, thereby allowing them to retain their three-dimensional shape and form a highly textured surface on the coform web. | 07-05-2012 |
20120196497 | EXTENSIBLE POLYPROPYLENE-BASED NONWOVENS - Disclosed herein is a nonwoven fabric comprising within the range of from 50 to 99 wt %, by weight of the composition, of a reactor grade propylene-α-olefin copolymer possessing within the range of from 5 to 35 wt %, by weight of the copolymer, of units derived from one or more of ethylene and/or C | 08-02-2012 |
20120270459 | NONWOVEN MATERIAL AND METHOD OF FABRICATING THE NONWOVEN MATERIAL - The present invention is a nonwoven material and a method of fabricating the nonwoven material. The material comprises a nylon fabric layer and at least one nonwoven fabric layer combined with the nylon layer. The method of fabricating the nonwoven material comprises steps of combining a nonwoven fabric layer with a nylon layer, hot-pressing the nonwoven fabric layer with the nylon layer and cooling the hot-pressed the nonwoven fabric layer and the nylon layer. | 10-25-2012 |
20130029556 | Copolymers of E-Caprolactone and Glycolide for Melt Blown Nonwoven Applications - Copolymers exhibiting the following combinations of properties, including without limitation, ε-caprolactone in an amount ranging from about 12 to about 70 mole percent, glycolide in an amount ranging from about 30 to about 88 mole percent, crystallinity ranging from about 10 to about 50% as measured by WAXD or about 10 to about 50 J/g as measured by DSC, and an inherent viscosity ranging from about 0.5 to about 1.45 dL/g as measured in a 0.1 g/dl solution of HFIP at 25° C.; a method for melt blowing such copolymers and nonwoven constructs produced therefrom are described herein. | 01-31-2013 |
20130122773 | Nonwoven Materials from Polymer Melt Filaments and Apparatuses and Methods Thereof - Systems for producing bulked webs and/or nonwoven materials may include at least one extruder having a plurality of nozzles and a master air jet in communication with at least one extruder to receive a plurality of polymer melt filaments from at least one extruder to form a bulked web. Producing bulked webs may include at least the steps of forming a plurality of polymer melt filaments; passing the plurality of polymer melt filaments through a master air jet thereby forming a bulked web; and collecting the bulked web. | 05-16-2013 |
20140315462 | Fibers Formed from Aromatic Polyester and Polyether Copolymer - A method for forming a fiber is provided. The method comprises supplying at least one aromatic polyester to a melt processing device and modifying the aromatic polyester with at least one polyether copolymer within the device to form a thermoplastic composition having a melt flow rate that is greater than the melt flow rate of the aromatic polyester. The polyether copolymer contains a repeating unit (A) having the following formula: | 10-23-2014 |
20190144673 | COLLAGEN CONTAINING-PLASTIC MASTERBATCH, THE MANUFACTURING METHOD THEREOF, THE PRODUCT THEREFROM, AND APPLICATION THEREOF | 05-16-2019 |