WO2014055098A1 - Matériau filamenteux haute efficacité - Google Patents
Matériau filamenteux haute efficacité Download PDFInfo
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- WO2014055098A1 WO2014055098A1 PCT/US2013/000227 US2013000227W WO2014055098A1 WO 2014055098 A1 WO2014055098 A1 WO 2014055098A1 US 2013000227 W US2013000227 W US 2013000227W WO 2014055098 A1 WO2014055098 A1 WO 2014055098A1
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- Prior art keywords
- filamentous
- filamentous material
- repeating
- bonding
- thermal
- Prior art date
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Classifications
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- D—TEXTILES; PAPER
- D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
- D04H—MAKING TEXTILE FABRICS, e.g. FROM FIBRES OR FILAMENTARY MATERIAL; FABRICS MADE BY SUCH PROCESSES OR APPARATUS, e.g. FELTS, NON-WOVEN FABRICS; COTTON-WOOL; WADDING ; NON-WOVEN FABRICS FROM STAPLE FIBRES, FILAMENTS OR YARNS, BONDED WITH AT LEAST ONE WEB-LIKE MATERIAL DURING THEIR CONSOLIDATION
- D04H1/00—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres
- D04H1/40—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
- D04H1/54—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
- D04H1/559—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 the fibres being within layered webs
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- D—TEXTILES; PAPER
- D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
- D04H—MAKING TEXTILE FABRICS, e.g. FROM FIBRES OR FILAMENTARY MATERIAL; FABRICS MADE BY SUCH PROCESSES OR APPARATUS, e.g. FELTS, NON-WOVEN FABRICS; COTTON-WOOL; WADDING ; NON-WOVEN FABRICS FROM STAPLE FIBRES, FILAMENTS OR YARNS, BONDED WITH AT LEAST ONE WEB-LIKE MATERIAL DURING THEIR CONSOLIDATION
- D04H1/00—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres
- D04H1/40—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
- D04H1/44—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 the fleeces or layers being consolidated by mechanical means, e.g. by rolling
- D04H1/46—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 the fleeces or layers being consolidated by mechanical means, e.g. by rolling by needling or like operations to cause entanglement of fibres
- D04H1/48—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 the fleeces or layers being consolidated by mechanical means, e.g. by rolling by needling or like operations to cause entanglement of fibres in combination with at least one other method of consolidation
- D04H1/49—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 the fleeces or layers being consolidated by mechanical means, e.g. by rolling by needling or like operations to cause entanglement of fibres in combination with at least one other method of consolidation entanglement by fluid jet in combination with another consolidation means
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- D—TEXTILES; PAPER
- D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
- D04H—MAKING TEXTILE FABRICS, e.g. FROM FIBRES OR FILAMENTARY MATERIAL; FABRICS MADE BY SUCH PROCESSES OR APPARATUS, e.g. FELTS, NON-WOVEN FABRICS; COTTON-WOOL; WADDING ; NON-WOVEN FABRICS FROM STAPLE FIBRES, FILAMENTS OR YARNS, BONDED WITH AT LEAST ONE WEB-LIKE MATERIAL DURING THEIR CONSOLIDATION
- D04H3/00—Non-woven fabrics formed wholly or mainly of yarns or like filamentary material of substantial length
- D04H3/08—Non-woven fabrics formed wholly or mainly of yarns or like filamentary material of substantial length characterised by the method of strengthening or consolidating
- D04H3/14—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
Definitions
- the present invention is directed to a construct comprising filamentary components and more particularly to a filamentous material exhibiting useful physical performance while retaining suitable attributes to allow for mechanical processing of that material into useful consumer products.
- the filamentous material includes at least one integrating network of essentially continuous filaments formed from at least one polymeric material.
- To said integrating network of continuous filaments is added at least one performance modifying filamentous component, wherein the addition and integration of the performance modifying filamentous component results in a composite material exhibiting a useful function of tactile and ductile softness while retaining finite control of fluids.
- Such finite fluid control includes management of both liquids and gases in the same composite while providing favorable consumer perceived "fabric” or “flannel” like characteristics as well as retaining attributes such as strength and elongation to allow for subsequent converting processes.
- Representative means and methods for fabricating such filamentous materials from the aforementioned integrating network and performance modifying filamentous components are provided herein.
- Patent No's 4,879170, 4,931,355, 4,950,531 and 4,939,016 to Radwanski, et al. disclose lay-down of multiple meltspun nonwoven fabrics materials or coforms with hydraulic energy used as a means of engaging said meltspun layers.
- U.S. Patent No. 5,023,130 to Simpson, et al. presents a high pressure means to attain total impact energies of 0.7MJ-N Kg to form an integrated web.
- Japanese Patent Application offer a means of fracturing filaments at self fused zones wherein total impact energies of 1.4MJ-N/Kg or greater are used.
- An alternate means of filament control is disclosed in U.S. Patent No. 6,321,425 to Putnam, et al.
- U.S. Patent No. 4,329,763 to Alexander et al. is directed to a softening process for thermal point bonded fabrics wherein a 25% reduction in bending modulus occurs.
- U.S. Patent No. 5,023,130 to Simpson et al. teaches a method by which unbonded continuous filaments are hydroentangled through application of high energy water jets.
- An object of the invention is a filamentous material exhibiting useful physical performance while retaining suitable attributes to allow for mechanical processing of that material into useful products.
- the filamentous material includes at least one integrating network of essentially continuous filaments formed from at least one polymeric material.
- To said integrating network of continuous filaments is added at least one performance modifying filamentous component, wherein the addition and integration of the performance modifying filamentous component results in a composite material exhibiting a useful function of tactile and ductile softness while retaining finite control of fluids.
- a further object of the present invention is a filamentous material wherein the integration of the continuous filament integrating network and the performance modifying filamentous component is by the application of hydraulic energy.
- a further object of the present invention is a filamentous material comprising a contiguous bonding pattern wherein said contiguous bonding pattern exhibits a pattern of thermal point bonds wherein the pattern is comprised of a first and a second repeating unit surface area.
- the first and second repeating surface areas are proximal to one another such that pattern of repeating surface areas extending in both the machine direction of production (length) and the cross direction of production (width).
- the first repeating unit surface area includes a thermal bond area of 1.) of at least 30% of the total area making up the first repeating unit surface area or 2.) a single bonding point extending completely though the machine direction, cross direction or combined machine and cross direction of the first repeating unit surface area.
- the second repeating unit surface area comprises a thermal bond area of less than 10% of the total area making up the second repeating unit surface area.
- a further object of the present invention is a filamentous material comprising a contiguous bonding pattern wherein a first repeating unit surface area is comprised of a thermal point bonds induced by a plurality of individual contact elements on a contact surface whereby the distance between any two individual contact elements is less than 0.5mm.
- a further object of the present invention is a filamentous material having retention of form and function when subjected to external forces, such as those imparted by stretching, loading, straining, wetting, or abrasion, whether such forces are of a singular, periodic, cyclical, or variable nature.
- a further object of the present invention is a filamentous material having finite fluid control wherein such control includes management of both liquids and gases in the same composite.
- a further object of the present invention is a filamentous material which provides favorable consumer perceived "fabric” or “flannel” like characteristics.
- a further object of the present invention is a filamentous material which exhibits attributes such as strength and elongation to allow and facilitate subsequent converting processes.
- a further object of the present invention is a filamentous material having a liquid absorbency in the absence of chemical modification in one or more elements of the continuous filament integrating network.
- a further object of the present invention is a filamentous material having a liquid absorbency in the absence of chemical modification in one or more elements of the performance modifying filamentous components.
- a further object of the present invention is a means for the production of a filamentous material comprising an integrating network and performance modifying filamentous component.
- a further object of the present invention is a filamentous material having a liquid absorbency in the presence of chemical modification in one or more elements of either the continuous filament integrating network or the performance modifying filamentous components.
- a further object of the present invention wherein the continuous filament integrating network is comprised of a spunbond nonwoven material.
- a further object of the present invention wherein the performance modifying filamentous components is comprised of a meltblown nonwoven material.
- a further object of the present invention wherein the ratio by weight of continuous filament integrating network to performance modifying filamentous component is greater than or equal to 4:1.
- a further object of the present invention wherein the ratio by weight of continuous filament integrating network to performance modifying filamentous component is greater than or equal to 5:1.
- a further object of the present invention wherein the filamentous material exhibiting fabric or flannel like characteristics whereby production includes an initial application of thermal bonding step through use of a symmetric pattern of point bonds, followed by application of hydraulic energy and then by application of thermal bonding step though use of point bonds.
- the secondary application of a thermal point bonding step uses a contiguous pattern.
- FIGURE 1 is a representative method of producing filamentous material in accordance with the present invention.
- FIGURE 2 is a representative method of producing filamentous material in accordance with the present invention.
- FIGURE 3 is a representative method of producing filamentous material in accordance with the present invention.
- FIGURE 4 is a representative method of producing filamentous material in accordance with the present invention.
- FIGURE 5 is a representative method of producing filamentous material in accordance with the present invention.
- FIGURE 6 is a representative method of producing filamentous material in accordance with the present invention.
- FIGURE 7 is a prior art method utilizing an asymmetric or anisotropic thermal bond pattern.
- FIGURE 8 is a prior art method utilizing an asymmetric or anisotropic thermal bond pattern.
- FIGURE 9 is a prior art method utilizing an asymmetric or anisotropic thermal bond pattern.
- FIGURE 10 is a representative method of producing filamentous material in accordance with the present invention utilizing a contiguous thermal bond pattern comprising thermal point bonds induced by a plurality of individual contact elements on a contact surface whereby the distance between any two individual contact elements is less than 0.5mm .
- FIGURE 1 1 is a representative method of producing filamentous material in accordance with the present invention utilizing a contiguous thermal bond pattern comprising a single bonding point extending completely though the machine direction, cross direction or combined machine and cross direction of the first repeating unit surface area.
- FIGURE 12A is a representative method of producing filamentous material in accordance with the present invention utilizing a contiguous thermal bond pattern comprising a single bonding point extending completely though the machine direction, cross direction or combined machine and cross direction of the first repeating unit surface area wherein a relative positions of repeating surface areas are depicted.
- FIGURE 12B is a representative method of producing filamentous material in accordance with the present invention utilizing a contiguous thermal bond pattern comprising a single bonding point extending completely though the machine direction, cross direction or combined machine and cross direction of the first repeating unit surface area wherein a relative positions of repeating surface areas are depicted.
- FIGURE 13 is a representative method of producing filamentous material in accordance with the present invention.
- FIGURE 14 is a representative method of producing filamentous material in accordance with the present invention.
- FIGURE 15 is a representative method of producing filamentous material in accordance with the present invention.
- FIGURE 16 is a representative method of producing filamentous material in accordance with the present invention.
- FIGURE 17 is a representative method of producing filamentous material in accordance with the present invention.
- FIGURE 18 is a representative method of producing filamentous material in accordance with the present invention.
- the present invention is directed to a construct comprising filamentous material, and more particularly to a filamentous material exhibiting useful physical performance while retaining suitable attributes to allow for mechanical processing of that material into useful products.
- the filamentous material includes at least one integrating network of essentially continuous filaments and one performance modifying filamentous component, both of which are formed from at least one polymeric material.
- Suitable polymeric materials include thermal melt and thermoset polymers, with thermal melt plastics being particularly preferred.
- Thermal melt plastics include polyolefins, and more preferably polypropylene or polyethylene.
- polyesters such as polyethylene terephthalate; polyamides; polyacrylates; polystyrenes; thermoplastic elastomers, block polymers, polymer alloys; and blends of these and other known fiber forming thermoplastic materials.
- FIGURES 1 through 6 Representative methods of producing a filamentous material in accordance with present invention are depicted in FIGURES 1 through 6. It should be noted that consolidation, pre-treatment by chemical or mechanical modification, and application of hydraulic energy may be effected by at various stages of lay-down of one or more integrating networks and one or more performance modifying filamentous components.
- a representative means for production of an integrating network of continuous filaments includes those produced by spunbond nonwoven technology, though other woven, knitted or continuous spinning technologies are equally suitable.
- the spunbond continuous filaments used in the present invention have a basis weight of preferably at least about 3 gsm.
- a process for the formation of spunbond involves supplying a molten thermal melt polymer, which is then extruded under pressure through a plate known as a spinneret or die head.
- the die head includes a spaced array of die orifices having diameters of generally about 0.1 to about 1.0 millimeters (mm).
- the resulting continuous filaments are quenched and drawn by any of a number of methods, such as slot draw systems, attenuator guns, or Godet rolls.
- the continuous filaments are collected as a loose web upon a moving collection surface, such as a wire mesh conveyor belt.
- a moving collection surface such as a wire mesh conveyor belt.
- the subsequent webs of filaments are collected upon the uppermost surface of the previously formed layer or web either continuously or in separately initiated batch processes.
- the individual or combined layers or webs may be optionally consolidated at any step in the overall process, whether in an intermediate form or in a final, pre-conversion roll for, such as by means involving; 1.) heat and pressure, such as by thermal point bonding, 2.) application of hydraulic energy, such as by direct pressurized streams or sprays of water, 3.) chemical bonding, such as by glues or adhesives, 4) thermal bonding, such as passage of elevated of elevated temperature air through the material, and 5.) combinations thereof.
- heat and pressure such as by thermal point bonding
- hydraulic energy such as by direct pressurized streams or sprays of water
- chemical bonding such as by glues or adhesives
- thermal bonding such as passage of elevated of elevated temperature air through the material, and 5.) combinations thereof.
- the web or layers of webs come into contact with a thermal conductive rolls, which may be either smooth or with an embossed pattern of individual contact elements to impart and achieve the desired degree of point bonding, usually on the order of 1 to 40 percent of the overall surface area being so bonded.
- a thermal conductive rolls which may be either smooth or with an embossed pattern of individual contact elements to impart and achieve the desired degree of point bonding, usually on the order of 1 to 40 percent of the overall surface area being so bonded.
- These thermal point bonds may remain present in the final material, partially removed due to the application of a first degree of applied hydraulic energy, or essentially removed due to the application of a second degree of applied hydraulic energy.
- the pattern or profile of the embossed roll may include a cross directional bias to the elements which impart the partial or complete consolidation of the fibrous components so as to alter the response of the fibrous components to force vector imparted by an applied hydraulic energy.
- Patent No.'s 7,858,544 and 8,093, 163 to Turi, et al. direct their focus to fibrous materials exhibiting a defined nature of a bonding pattern to achieve a desired result (reference Figures 7, 8 and 9).
- the referenced patents disclose nonwovens having a non-symmetrical pattern of fusion bonds (that is, an anisotropic or asymmetrical pattern).
- bonds in an asymmetrical pattern may have a common orientation and common dimensions, yet define a total bond area along one direction (e.g., the MD) greater than along another direction (e.g., the CD) which is oriented orthogonally to the first direction, such that the points form a uniform pattern of bond density in one direction different from the uniform pattern of bond density in the other direction.
- the bonds themselves may have varying orientations or varying dimensions, thereby to form a pattern of bond density which differs along the two directions.
- the bonds may be simple fusion bonds or closed figures elongated in one direction.
- the bonds may be closed figures elongated in one direction and selected from the group consisting of closed figures (a) oriented in parallel along the one direction axis, (b) oriented transverse to adjacent closed figures along the one direction axis, and (c) oriented sets with proximate closed figures so as to form there between a closed configuration elongated along the one direction axis.
- a contiguous bonding pattern is defined as a pattern of thermal point bonds wherein the pattern is comprised of a first and a second repeating unit surface area. The first and second repeating surface areas are proximal to one another such that pattern of repeating surface areas extending in both the machine direction of production (length) and the cross direction of production (width).
- the first repeating unit surface area includes a thermal bond area of 1.) of at least 30% of the total area making up the first repeating unit surface area or 2.) a single bonding point extending completely though the machine direction, cross direction or combined machine and cross direction of the first repeating unit surface area.
- the second repeating unit surface area comprises a thermal bond area of less than 10% of the total area making up the second repeating unit surface area.
- the thermal point bond may be induced by a plurality of individual contact elements on a contact surface whereby the distance between any two individual contact elements is less than 0.5mm, as represented by Figure 11.
- Figure 11 multiple thermal point bonds are induced in a the first repeating unit surface area ("SAl") to create a higher degree of bonding than are created in the adjacent second repeating unit surface area (“SA2").
- SAl first repeating unit surface area
- SA2 adjacent second repeating unit surface area
- the repeating unit surface area for SAl and SA2 are defined as being rectilinear boundaries having the same total area.
- a given SAl will be circumscribed by a total of four (4) identical SA1 units, wherein each SA1 comes into contact with the vertex of an SA1 unit, ( Figure 12A) and four (4) identical SA2 units, wherein each SA2 unit comes into contact with the side of an SA1 unit ( Figure 12B).
- a given SA2 will be circumscribed by a total of four (4) identical SA2 units, wherein each SA2 comes into contact with the vertex of an SA2 unit, and four (4) identical SA1 units, wherein each SA1 unit comes into contact with the side of an SA2 unit.
- the aforementioned integrating network of continuous filaments receives at least one performance modifying filamentous component, wherein the addition and integration of the performance modifying filamentous component results in a composite material exhibiting a useful function of tactile and ductile softness while retaining finite control of fluids.
- finite fluid control includes management of both liquids and gases in the same composite while providing favorable consumer perceived "fabric” or “flannel” like characteristics as well as retaining attributes such as strength and elongation to allow for subsequent converting processes.
- a particularly preferred mode of attaining a filamentous material having fabric or flannel like characteristics is wherebyproduction includes an initial application of thermal bonding step through use of a symmetric pattern of point bonds, followed by application of hydraulic energy and then by application of thermal bonding step though use of point bonds.
- the secondary application of a thermal point bonding step uses a contiguous pattern.
- Representative means and methods for fabricating such performance modifying filamentous components includes those produced by the meltblown nonwoven technology, though other technologies which produce fibrous elements of less than 10 micrometers in diameter, such as flash-spinning and nanofiber.
- a representative meltblown process is similar in nature to the aforementioned spunbond process, which in place of essentially continuous filaments, this process involves the formation of discontinuous filamentary material. Again, a molten thermal melt polymer is extruded under pressure through orifices in a spinneret or die. High velocity air impinges upon and entrains the filaments as they exit the die. The energy of this step is such that the formed filaments are greatly reduced in diameter and are fractured so that microfibers of finite length are produced.
- the individual elements within the integrating network or the performance modifying filamentous components may further be of homogenous or heterogeneous composition, include performance or aesthetic modifying melt additives, and be comprised of monocomponent, bicomponent, and/or multicomponent filament or fiber construction.
- one or more continuous filament integrating networks may be layered with one or more performance modifying filamentous components such that in the manufacturing or lay-down process: 1.) the components of each type alternate in order of lay-down; 2.) two or more layers of a component type are sequentially ordered for lay-down; 3.) an equal number of component type are used; 4.) and odd number of component types are used; 5.) the amount of component types are introduced in equal mass, composition or diameter; 6.) the amount of component types are introduced in different, varying, or incremental adjustment of introduced mass, composition, or diameter; and, 7.) combinations thereof.
- one or more consolidation step may be used between one or more lay-down steps in the manufacturing process.
- Chemical based performance and/or aesthetic modifying melt additives includes those chemistries which result in modified properties of the filaments or fibers, such as to render the fibrous element hydrophobic, hydrophihc, enhance absorbency, render anti-static or flame retardant, modify crystallinity or strength, alter melt-flow rheology, and the like.
- the filamentous material in accordance with the present invention including selective application to continuous filament integrating network elements, to performance modifying filamentous components, or precursor combinations thereof, are subjected to water jet treatment.
- the water jet treatment allows for hydraulic energy to be imparted as a force on the elements in the filamentous material being produced. This hydraulic energy acts to displace or motivate elements with the filamentous material to inter-engage and form a composite performance, with such processes being known in the art as being "hydroentangled” or “hydroengorged”.
- Application of hydraulic energy may occur upon either expansive plane or face of the filamentous material being produced and may occur in one or more sequential or alternating steps.
- the water jets are preferably present in an amount of 1-10 heads or manifolds per side and the water is provided at a pressure predetermined by the quality of the resultant fabric desired.
- the pressure of the water in the jets is in a range of about 50-about 400 bar per head, with the range of 100 to 300 bar being preferred.
- Unique to the produced filamentous material of the present invention a high degree of integration is obtained wherein the fiber volume, as defined by the basis weight divided by bulk, in the range of 0.05 milligrams/cubic centimeter to 0.40 milligrams/cubic centimeter and exhibits an air permeability of 250 1/sqm/sec or greater per gram/square meter material construct total or final weight.
- the filamentous material can be treated with one or more chemical agents to further affect, e.g., enhance or modify, web secondary properties such as flame retardancy, anti-static nature, and the like.
- the chemical agents may be topically applied over the entire surface of the filamentous material or within preselected zones. These zones may be provided with the same surfactant or additive or a different surfactant or additive in order to provide zones with different or the same properties.
- An example of topical treatment suitable for use is described in U.S. Pat. Nos. 5,709,747 and 5,885,656.
- a variation upon the topical treatment of the filamentous material is that the surfactants can be applied as an array or in discrete strips across the width of the filamentous material in order to create zone treatments to which different performance, functional and/or aesthetic properties can be provided.
- the invention allows for the production of a filamentous material in one continuous process including various features to provide new or enhanced properties within the filamentous material, in particular with respect to absorbency and softness.
- the invention also allows for the production of the nonwoven filamentous material in different individual process stages, e.g., as a two or more step process wherein one is the manufacture of the integrating network of continuous filaments, one is the application or manufacture of performance modifying filamentous components and one involving hydraulic processing of the composite.
- This versatility allows for cost savings since a continuous line does not have to be provided in one place or utilized at one continuous time.
- a composite including an integrating network and a performance modifying filamentous component can be produced and then wound for temporary storage before being subjected to water jet treatment.
- the layers may be subjected to water jet treatment to provide for a filamentous material of the invention which is usable as such or may be placed in storage and subsequently treated based upon a desired end use for the filamentous material.
- This versatility provides for cost efficiency in terms of plant space required for the provision of equipment, versatility in the use of different equipment with respect to timing and products and the ability to provide filamentous material with varying properties based on the application to which the material will be put.
- the filamentous material of the present invention exhibits retention of form and function when subjected to external forces, such as those imparted by stretching, loading, straining, wetting, or abrasion, whether such forces are of a singular, periodic, cyclical, or variable nature.
- This durability aspect of the filamentous material is useful in the making of numerous end-use consumer products, including but not limited to hygiene products, personal and surface wipes as well as medical products.
- the durable aesthetic and physical performance relative to basis weight embodied by the inventive filamentous material offers desirable integration as one or more components of a diaper, incontinence device, or catamenial device.
- Such material may be used in affixing the diaper to the wearer and/or skin contact and skin health properties when subjected to liquid insult suggestive of use in diaper constructs, are beneficial in view of the simultaneous presence of strength, elongation and low-linting performance that influence the materials convertibility by high-speed automated platforms and end use application.
- a material of the present invention further embodies air permeability and liquid barrier properties, such material is advantageously employed in the construction of outer layer or layers away from the wearer such that a durable material with both aesthetic and performance properties are utilized, such as in the construction of a back sheet element.
- Apparatus useful in preparing the filamentous material of the invention is conventional in nature and known to one skilled in the art.
- Such apparatus includes extruders, conveyor lines, water jets, rewinders or unwinders, topical applicators, calenders or compactors, and the like.
- Example #1 a 22.1 gsm material produced in accordance with the present invention was found to exhibit the following results:
- Example #2 a 22.3 gsm spunbond/meltblown/spunbond material produced in accordance with the present invention at a moderate kiss roll speed was found to exhibit the following results:
- Example #3 a 23.0 gsm spunbond/meltblown/spunbond material produced in accordance with the present at a lower kiss roll speed invention was found to exhibit the following results:
- Example #4 a 23.2 gsm spunbond/meltblown/spunbond material produced in accordance with the present invention a higher kiss roll speed was found to exhibit the following results:
- Example #5 a 22.7 gsm spunbonoVmeltblown/spunbond material produced in accordance with the present invention with a hydroentangled integrating network was found to exhibit the following results:
Abstract
La présente invention a pour objet une construction comprenant un matériau filamenteux, et, plus particulièrement, un matériau filamenteux présentant des efficacités physiques utiles tout en conservant des attributs appropriés afin de permettre un traitement mécanique du matériau en produits utiles. Le matériau filamenteux comprend au moins un circuit intégrateur de filaments essentiellement continus formés d'au moins un matériau polymère. Audit circuit intégrateur de filaments continus est ajouté au moins un composant filamenteux modifiant l'efficacité, l'ajout et l'intégration du composant filamenteux modifiant l'efficacité, résultant en un matériau composite présentant une fonction utile de mollesse tactile et ductile tout en conservant une régulation précise de fluides. L'invention porte également sur des moyens et des procédés représentatifs de fabrication de ces matériaux filamenteux à partir du circuit intégrateur susmentionné et d'éléments filamenteux modifiant l'efficacité.
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US201261744944P | 2012-10-05 | 2012-10-05 | |
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Cited By (1)
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WO2020245827A1 (fr) | 2019-06-04 | 2020-12-10 | Ahava - Dead Sea Laboratories Ltd. | Mise en œuvre à base de minéraux de la mer morte dans des non-tissés à hautes performances |
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WO2020245827A1 (fr) | 2019-06-04 | 2020-12-10 | Ahava - Dead Sea Laboratories Ltd. | Mise en œuvre à base de minéraux de la mer morte dans des non-tissés à hautes performances |
CN114072112A (zh) * | 2019-06-04 | 2022-02-18 | Ahava-死海实验室有限公司 | 死海矿物质施用于多种高性能非织造织物 |
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