Abstract

A nonwoven fabric comprising a meltspun fibre of a lignin compound. Also claimed a laminated fabric comprising the nonwoven fabric, a nonwoven fabric product comprising the nonwoven fabric, a structured multicomponent fibre comprising a lignin compound, a web comprising a meltspun fibre of a lignin compound and a method of producing a nonwoven fabric by forming a web of meltspun fibre comprising a lignin compound and bonding at least a portion of the fibre in the web to form the nonwoven fabric.

IPC Classes  ?

• D04H 1/42 - Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties characterised by the use of certain kinds of fibres insofar as this use has no preponderant influence on the consolidation of the fleece
• D01F 8/00 - Conjugated, i.e. bi- or multicomponent, man-made filaments or the likeManufacture thereof

Abstract

The invention provides a nonwoven electret web comprising fibers made from a thermoplastic polymer material which comprises a polymer, a first additive (a) and a second additive (b), wherein the first additive (a) comprises a hindered amine and the second additive (b) comprises a metal salt of a carboxylic acid and/or an organic amide derived from a carboxylic acid and an amine. The invention further provides a process for making the nonwoven electret web, a fiber, a process for making the fiber, a mullti-layer sheet, and the use of the nonwoven electret web, the fiber or the multilayered sheet as a filter material or as a dust-removing fabric for cleaning purposes.

IPC Classes  ?

• D04H 1/56 - Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties by welding together the fibres, e.g. by partially melting or dissolving in association with fibre formation, e.g. immediately following extrusion of staple fibres
• D04H 1/4291 - Olefin series
• B01D 39/14 - Other self-supporting filtering material
• D06M 11/05 - Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with inorganic substances or complexes thereofSuch treatment combined with mechanical treatment, e.g. mercerising with hydrogen, water or heavy waterTreating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with inorganic substances or complexes thereofSuch treatment combined with mechanical treatment, e.g. mercerising with hydrides of metals or complexes thereofTreating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with inorganic substances or complexes thereofSuch treatment combined with mechanical treatment, e.g. mercerising with boranes, diboranes, silanes, disilanes, phosphines, diphosphines, stibines, distibines, arsines or diarsines or complexes thereof with water, e.g. steamTreating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with inorganic substances or complexes thereofSuch treatment combined with mechanical treatment, e.g. mercerising with hydrogen, water or heavy waterTreating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with inorganic substances or complexes thereofSuch treatment combined with mechanical treatment, e.g. mercerising with hydrides of metals or complexes thereofTreating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with inorganic substances or complexes thereofSuch treatment combined with mechanical treatment, e.g. mercerising with boranes, diboranes, silanes, disilanes, phosphines, diphosphines, stibines, distibines, arsines or diarsines or complexes thereof with heavy water

Abstract

The invention is related to an extruded polymer product comprising a polymer material comprising at least one polyolefin and wherein cellulose material obtained from ricehulls is embedded in the polymer material. Also a method for use of rice hulls is proposed.

IPC Classes  ?

• D01F 1/10 - Other agents for modifying properties
• D01F 6/04 - Monocomponent man-made filaments or the like of synthetic polymersManufacture thereof from homopolymers obtained by reactions only involving carbon-to-carbon unsaturated bonds from polyolefins
• D01F 8/06 - Conjugated, i.e. bi- or multicomponent, man-made filaments or the likeManufacture thereof from synthetic polymers with at least one polyolefin as constituent
• C08J 5/04 - Reinforcing macromolecular compounds with loose or coherent fibrous material
• D01D 1/06 - Feeding liquid to the spinning head
• B29C 47/10 - Feeding the material to the extruder
• B29C 47/76 - Venting or degassing means
• C08L 23/02 - Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bondCompositions of derivatives of such polymers not modified by chemical after-treatment
• C08J 5/18 - Manufacture of films or sheets
• C08J 7/04 - Coating
• B32B 5/26 - Layered products characterised by the non-homogeneity or physical structure of a layer characterised by the presence of two or more layers which comprise fibres, filaments, granules, or powder, or are foamed or specifically porous one layer being a fibrous or filamentary layer another layer also being fibrous or filamentary
• B32B 27/02 - Layered products essentially comprising synthetic resin in the form of fibres or filaments
• B32B 27/08 - Layered products essentially comprising synthetic resin as the main or only constituent of a layer next to another layer of a specific substance of synthetic resin of a different kind
• B32B 27/12 - Layered products essentially comprising synthetic resin next to a fibrous or filamentary layer
• B32B 27/20 - Layered products essentially comprising synthetic resin characterised by the use of special additives using fillers, pigments, thixotroping agents

Abstract

Disclosed are highly extensible bonded webs or multilayered sheets containing these. These products can be processed in a ring-roll process without damage. The bonded webs or multilayered sheets can be used, for example in the manufacture of diapers.

IPC Classes  ?

• D04H 3/16 - Non woven fabrics formed wholly or mainly of yarns or like filamentary material of substantial length characterised by the method of strengthening or consolidating with bonds between thermoplastic yarns or filaments produced by welding with bonds between thermoplastic filaments produced in association with filament formation, e.g. immediately following extrusion

Abstract

2·min), wherein the product of the air permeability and the basis weight is ≦5000 g/(m·min).

IPC Classes  ?

• B32B 5/24 - Layered products characterised by the non-homogeneity or physical structure of a layer characterised by the presence of two or more layers which comprise fibres, filaments, granules, or powder, or are foamed or specifically porous one layer being a fibrous or filamentary layer
• B32B 5/26 - Layered products characterised by the non-homogeneity or physical structure of a layer characterised by the presence of two or more layers which comprise fibres, filaments, granules, or powder, or are foamed or specifically porous one layer being a fibrous or filamentary layer another layer also being fibrous or filamentary
• B32B 5/30 - Layered products characterised by the non-homogeneity or physical structure of a layer characterised by the presence of two or more layers which comprise fibres, filaments, granules, or powder, or are foamed or specifically porous one layer comprising granules or powder
• B32B 27/02 - Layered products essentially comprising synthetic resin in the form of fibres or filaments
• B32B 27/32 - Layered products essentially comprising synthetic resin comprising polyolefins
• B32B 27/12 - Layered products essentially comprising synthetic resin next to a fibrous or filamentary layer
• B32B 27/20 - Layered products essentially comprising synthetic resin characterised by the use of special additives using fillers, pigments, thixotroping agents

Abstract

3, a maximum tensile force of between 9.5 and 62 N in the direction of the machine and of between 4.5 and 35 N perpendicular to the direction of the machine.

IPC Classes  ?

• D04H 3/16 - Non woven fabrics formed wholly or mainly of yarns or like filamentary material of substantial length characterised by the method of strengthening or consolidating with bonds between thermoplastic yarns or filaments produced by welding with bonds between thermoplastic filaments produced in association with filament formation, e.g. immediately following extrusion
• D04H 1/00 - Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres
• D04H 13/00 - Other non-woven fabrics

Abstract

Disclosed are bicomponent fibers with aliphatic polyester forming a first component and a polyolefin forming a second component wherein the polyolefin contains an adjuvant improving the biodegradability of said polyolefin. Textile sheets comprising these bicomponent fibers are comparable in their mechanical properties to polyolefin based textile sheets while these are more efficiently decomposed by the action of microorganisms as polyolefin based textile sheets.

IPC Classes  ?

• D01F 8/14 - Conjugated, i.e. bi- or multicomponent, man-made filaments or the likeManufacture thereof from synthetic polymers with at least one polyester as constituent
• D01F 1/04 - Pigments
• D01F 1/06 - Dyes

Abstract

The present invention relates to a fleece and a fleece fiber comprising a polymer mixture, which includes as a base polymer a polyethylene having an MFI between 15 und 35, preferably between 15 and 20 g/10 min according to ISO 1133 and a density of 0.935 to 0.965 g/cm3 according to ASTM D-792 and which includes at least as a second polymer an LLDPE having a density between 0.85 and 0.900 g/cm3 according to ASTM D-762. Various applications for use of the fleece are also proposed.

IPC Classes  ?

• C08L 23/06 - Polyethene
• C08L 23/08 - Copolymers of ethene
• D01F 6/46 - Monocomponent man-made filaments or the like of synthetic polymersManufacture thereof from mixtures of polymers obtained by reactions only involving carbon-to-carbon unsaturated bonds as major constituent with other polymers or low-molecular-weight compounds of polyolefins
• D01F 8/06 - Conjugated, i.e. bi- or multicomponent, man-made filaments or the likeManufacture thereof from synthetic polymers with at least one polyolefin as constituent
• D04H 1/00 - Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres
• D04H 1/4291 - Olefin series
• D04H 3/007 - Addition polymers
• D04H 3/16 - Non woven fabrics formed wholly or mainly of yarns or like filamentary material of substantial length characterised by the method of strengthening or consolidating with bonds between thermoplastic yarns or filaments produced by welding with bonds between thermoplastic filaments produced in association with filament formation, e.g. immediately following extrusion

Abstract

The present invention relates to the use of a polypropylene mixture for the production of a spunbonded non-woven fabric having increased elastic property, wherein the polypropylene mixture substantially comprises a first homopolypropylene and a second homopolypropylene, wherein an MFR of the first homopolypropylene is greater than an MFR of the second homopolypropylene, wherein the second homopolypropylene has a weight proportion in the polypropylene mixture of at least 3% by weight to a maximum of 25% by weight, wherein the first homopolypropylene is substantially the remaining weight proportion of the polypropylene mixture, wherein the second homopolypropylene has an MFR between 0.7 and 14g/10min (230°C/2.16kg) according to ISO 1133, and a difference of the MFR of the second homopolypropylene to the MFR of the first homopolypropylene is at least 10g/10min, and an upper limit of the MFR of the first homopolypropylene is 55g/10min (230°C/2.16kg) according to ISO 1133. Substantially here shall mean that only the two homopolypropylenes are used as polymers. Additionally, additives can be added, but no further polymer. The invention further relates to a corresponding polypropylene mixture, a spunbonded non-woven fabric made from said polypropylene mixture, and a corresponding method of production.

IPC Classes  ?

• C08L 23/12 - Polypropene
• D01F 8/06 - Conjugated, i.e. bi- or multicomponent, man-made filaments or the likeManufacture thereof from synthetic polymers with at least one polyolefin as constituent
• D04H 3/005 - Synthetic yarns or filaments
• D04H 3/16 - Non woven fabrics formed wholly or mainly of yarns or like filamentary material of substantial length characterised by the method of strengthening or consolidating with bonds between thermoplastic yarns or filaments produced by welding with bonds between thermoplastic filaments produced in association with filament formation, e.g. immediately following extrusion

Abstract

Disclosed is a spunbonded non-woven made of polyolefin filaments having a titer ឬ1.6 dtex, the spunbonded non-woven having a surface weight ≤ 18 g/m2, a water impermeability of ឬ 15 cm, measured in cm of a water column, and an air permeability of at least 230 m3/(m2.min), wherein the product of air permeability and surface weight is ≤ 5000 g/(m.min).

IPC Classes  ?

• D04H 3/16 - Non woven fabrics formed wholly or mainly of yarns or like filamentary material of substantial length characterised by the method of strengthening or consolidating with bonds between thermoplastic yarns or filaments produced by welding with bonds between thermoplastic filaments produced in association with filament formation, e.g. immediately following extrusion
• B32B 5/16 - Layered products characterised by the non-homogeneity or physical structure of a layer characterised by features of a layer formed of particles, e.g. chips, chopped fibres, powder

Abstract

Disclosed is a spunbonded non-woven made of polyolefin filaments having a titer ឬ1.6 dtex, the spunbonded non-woven having a surface weight ≤ 20 g/m2, a density ≥ 0.06 g/cm3, a maximum tensile force of between 9.5 and 62 N in the direction of the machine and of between 4.5 and 35 N perpendicular to the direction of the machine.

IPC Classes  ?

• D04H 3/16 - Non woven fabrics formed wholly or mainly of yarns or like filamentary material of substantial length characterised by the method of strengthening or consolidating with bonds between thermoplastic yarns or filaments produced by welding with bonds between thermoplastic filaments produced in association with filament formation, e.g. immediately following extrusion
• B32B 5/16 - Layered products characterised by the non-homogeneity or physical structure of a layer characterised by features of a layer formed of particles, e.g. chips, chopped fibres, powder

Abstract

A polymer fiber comprising a thermoplastic polymer and an inorganic filler, wherein the filler content, based on the polymer fiber, is more than 10% by weight and the mean particle size (D50) of the filler is less than or equal to 6 &mgr;m. A textile fabric, especially nonwoven, produced from the polymer fiber.

IPC Classes  ?

• D01F 1/02 - Addition of substances to the spinning solution or to the melt
• D01D 5/08 - Melt-spinning methods
• D01F 1/10 - Other agents for modifying properties
• D04H 1/42 - Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties characterised by the use of certain kinds of fibres insofar as this use has no preponderant influence on the consolidation of the fleece
• D04H 1/4291 - Olefin series
• D04H 3/007 - Addition polymers
• D04H 3/02 - Non woven fabrics formed wholly or mainly of yarns or like filamentary material of substantial length characterised by the method of forming fleeces or layers, e.g. reorientation of yarns or filaments
• D04H 3/16 - Non woven fabrics formed wholly or mainly of yarns or like filamentary material of substantial length characterised by the method of strengthening or consolidating with bonds between thermoplastic yarns or filaments produced by welding with bonds between thermoplastic filaments produced in association with filament formation, e.g. immediately following extrusion

Abstract

The invention provides a roll assembly including a pair of cylindrical rolls that are positioned in an opposing cooperating relation for receiving a sheet material therebetween. A plurality of projections on at least one of the rolls extending radially outward from a surface thereof and a plurality of corresponding recesses is provided on the other roll. The projections and corresponding recesses are positioned and arranged on the rolls for contacting and engaging a sheet passing between the pair of rolls. The projections each include an outermost surface portion that is positioned for contacting a discrete portion of the sheet and for entering a corresponding recess on the opposite roll. When rolls rotate about their axes, the projections engage the discrete portion of the sheet material which results in the discrete portion entering the recesses with the projections so as to stretch the sheet in multiple directions.

IPC Classes  ?

• B29C 43/46 - Rollers
• B29C 55/18 - Shaping by stretching, e.g. drawing through a dieApparatus therefor of plates or sheets by squeezing between surfaces, e.g. rollers

Abstract

The invention provides a roll assembly (10) including a pair of cylindrical rolls (12, 14) that are positioned in an opposing cooperating relation for receiving a sheet material (26) therebetween. A plurality of projections (16) on at least one of the rolls extending radially outward from a surface thereof and a plurality of corresponding recesses (20) is provided on the other roll (14). The projections and corresponding recesses are positioned and arranged on the rolls for contacting and engaging a sheet passing between the pair of rolls. The projections each include an outermost surface portion that is positioned for contacting a discrete portion of the sheet and for entering a corresponding recess on the opposite roll. When rolls rotate about their axes, the projections engage the discrete portion of the sheet material which results in the discrete portion entering the recesses with the projections so as to stretch the sheet in multiple directions.

IPC Classes  ?

• D06C 23/04 - Making patterns or design on fabrics by shrinking, embossing, moireing, or crêping
• B29C 55/18 - Shaping by stretching, e.g. drawing through a dieApparatus therefor of plates or sheets by squeezing between surfaces, e.g. rollers
• B29C 59/02 - Surface shaping, e.g. embossingApparatus therefor by mechanical means, e.g. pressing

Abstract

The invention is related to a flexible container (1), especially a carrier bag, comprising an opening (6) and an adjacent base having at least one sheet-like nonwoven web as a side wall (2,3) with said container. At least one handle feature (8) is included through, or bonded to the sidewalls of the container. Additionally a method is described to achieve these flexible containers.

IPC Classes  ?

• B65D 30/00 - Sacks, bags or like containers
• B65D 33/00 - Details of, or accessories for, sacks or bags
• B65D 33/02 - Local reinforcements or stiffening inserts, e.g. wires, strings, strips or frames
• B65D 33/08 - Hand holes
• B65D 33/10 - Handles formed of similar material to that used for the bag
• B65D 33/12 - String handles
• B65D 33/24 - End- or aperture-closing arrangements or devices using self-locking integral or attached closure elements, e.g. flaps
• B65D 33/28 - Strings or strip-like closures
• B31B 37/00 - Machinery characterised by making envelopes or bags with structural provision at the base for thickness of contents, from webs, e.g. from tubular webs
• B31B 19/64 - Machinery characterised by making rectangular envelopes or bags of flat form, i.e. without structural provision at the base for thickness of contents and having means for uniting opposed surfaces or edges, or for taping by applying heat or pressure