Class / Patent application number | Description | Number of patent applications / Date published |
442415000 | Containing at least two chemically different strand or fiber materials | 11 |
20110059669 | MULTICOMPONENT BIODEGRADABLE FILAMENTS AND NONWOVEN WEBS FORMED THEREFROM - A biodegradable, substantially continuous filament is provided. The filament contains a first component formed from at least one high melting polyester and a second component formed from at least one low melting polyester. The low melting point polyester is an aliphatic-aromatic copolyester formed by melt blending a polymer and an alcohol to initiate an alcoholysis reaction that results in a copolyester having one or more hydroxyalkyl or alkyl terminal groups. By selectively controlling the alcoholysis conditions (e.g., alcohol and copolymer concentrations, catalysts, temperature, etc.), a modified aliphatic-aromatic copolyester may be achieved that has a molecular weight lower than the starting aliphatic-aromatic polymer. Such lower molecular weight polymers also have the combination of a higher melt flow index and lower apparent viscosity, which is useful in the formation of substantially continuous filaments. | 03-10-2011 |
20110287681 | Textiles and Process for Making Textiles and Dyes from Tobacco Plants - A textile and a dye manufactured from fibers that are derived from tobacco plants and a process for making the textile and dye from the tobacco plants. In a preferred embodiment, the tobacco is organically grown and the entire tobacco plant, including stem and leaves, is utilized to produce the tobacco plant fiber used for making a textile and a natural dye utilized to color the textile or other textiles. One or more secondary material fibers can be mixed with the tobacco plant fiber to produce the textile. The process percolates a hot liquid solution onto tobacco plant material to cause a chemical reaction with the tobacco plant material to produce the tobacco plant fiber. Preferably, the process is a closed-loop system that minimizes the impact on the environment and utilizes less material, fuel and other resources. The dye does not require a mordant to bind with the textile. | 11-24-2011 |
20120322333 | STRETCHABLE SHEETS COMPRISING A VARIETY OF LAYERS AND ZONES AND METHODS TO PRODUCE SUCH PRODUCTS - The invention provides methods for producing flexible, stretchable, and/or elastic sheets and products having two or more zone having different material features and performance. The products can be comprised of material such as natural elastomers and other synthetic polymers. The method for producing stretchable products by spraying product material of different types over different zones of a workpiece former or conveyor belt, | 12-20-2012 |
20130137331 | Nonwoven Fabrics Made From Polymer Blends And Methods For Making Same - The present invention is directed to polymer blends for use in nonwoven fabric applications, and to fabrics formed from the polymer blends. In one or more embodiments, the polymer blends comprise from about 70 to about 99.9 wt %, based on the total weight of the composition, of a first propylene-based polymer and from about 0.1 to about 30 wt % of a second propylene-based polymer. The first polymer has a melt flow rate of from about 100 to about 5,000 g/10 min, and the second polymer has a melt flow rate of from about 1 to about 500 g/min, and the second polymer has either a lower melt flow rate or a higher triad tacticity than the first polymer. | 05-30-2013 |
20130309932 | Multicomponent Biodegradable Filaments and Nonwoven Webs Formed Therefrom - A biodegradable, substantially continuous filament is provided. The filament contains a first component formed from at least one high melting polyester and a second component formed from at least one low melting polyester. The low melting point polyester is an aliphatic-aromatic copolyester formed by melt blending a polymer and an alcohol to initiate an alcoholysis reaction that results in a copolyester having one or more hydroxyalkyl or alkyl terminal groups. By selectively controlling the alcoholysis conditions (e.g., alcohol and copolymer concentrations, catalysts, temperature, etc.), a modified aliphatic-aromatic copolyester may be achieved that has a molecular weight lower than the starting aliphatic-aromatic polymer. Such lower molecular weight polymers also have the combination of a higher melt flow index and lower apparent viscosity, which is useful in the formation of substantially continuous filaments. | 11-21-2013 |
20160032090 | Polymer Compositions and Nonwoven Compositions Prepared Therefrom - Described herein are propylene-based polymer compositions that comprise a reactor blend of a first polymer component and a second polymer component. The first polymer component has an ethylene content of from greater than 12 to less than 19 wt % ethylene, and the second polymer component has an ethylene content of from greater than 4 to less than 10 wt % ethylene. Preferably, the ethylene content of the first and second polymer components satisfy the formula: | 02-04-2016 |
442416000 | Containing polymeric and natural strand or fiber materials | 5 |
20080287027 | POLYPROPYLENE NONWOVEN FABRIC AND USE THEREOF - A polypropylene based nonwoven fabric is excellent in surface appearance and stretch properties and exhibits a small residual strain and excellent adhesiveness to polyolefins. The nonwoven fabric is obtained by forming a polypropylene resin composition comprising 1 to 40 weight parts of (i) an isotactic polypropylene, and 60 to 99 weight parts of (ii) a propylene/ethylene/α-olefin copolymer obtained by copolymerizing 45 to 89 mole % of propylene, 10 to 25 mole % of ethylene and the balance of α-olefin having 4 to 20 carbon atoms (with the proviso that the copolymerized amount of the α-olefin having 4 to 20 carbon atoms does not exceed 30 mole %), characterized by a small residual strain after stretching at a stretch ratio of 150%. The nonwoven fabric can be effectively used as sanitary materials or the like by virtue of its characteristics including stretch properties. | 11-20-2008 |
20120309250 | COMPOSITE INORGANIC/POLYMER FIBERS AND INORGANIC FIBRILS FABRICATED FROM SHEARED SOLUTIONS - Nanofibers are fabricated by introducing a mixture of a polymer solution and inorganic precursor into a dispersion medium and shearing the mixture. Liquid strands, streaks or droplets of the mixture are spun into elongated fibers that include inorganic fibrils. The resulting composite inorganic/polymer fibers may be provided as an end product. Alternatively, the polymer may be removed to liberate the inorganic fibrils, which may be of the same or smaller cross-section as the polymer fibers and may be provided as an end product. | 12-06-2012 |
20130012093 | FIBERS OF POLYMER-WAX COMPOSITIONS - Fibers formed from compositions comprising thermoplastic polymers and waxes are disclosed, where the wax is dispersed throughout the thermoplastic polymer. Also disclosed are nonwoven webs and articles formed from fibers of these compositions. | 01-10-2013 |
20130316608 | Nonwoven Fabric and Method and Apparatus for Manufacturing the Same - A nonwoven fabric includes a plurality of discontinuous fibers, a plurality of natural keratin fibers, and a plurality of meltblown fibers. The discontinuous fibers, the natural keratin fibers, and the meltblown fibers form a continuous bonding web structure. | 11-28-2013 |
20140141677 | Non-Woven Fabric and Method for Fabricating the Same - A non-woven fabric includes a filament fiber web and a composite fiber web that is entangled with the filament fiber web and that includes composite staple fibers and cellulose fibers. The composite staple fibers and the cellulose fibers are fusion-bonded together. A method of fabricating a non-woven fabric includes: (a) air laying and thermally treating composite staple fibers and cellulose fibers so as to form a composite fiber web, the composite staple fibers and the cellulose fibers in the composite fiber web being fusion-bonded together, and (b) disposing the composite fiber web between two filament fiber webs followed by subjecting to water-jet treatment such that the composite fiber web and the filament fiber webs are entangled with each other. | 05-22-2014 |