Abstract: An absorbent article (20, 20?) comprising a topsheet (58), a backsheet (42,60), and an absorbent core (62), and at least one nonwoven-nonwoven adhesive bond other than a core stabilization bond, wherein the adhesive of the adhesive bond has a Toughness of at least 11 MJ/m3, a Yield Stress of at least 0.7 MPa. The adhesive may further have a storage modulus G? of at least 7.5 MPa. These are as measured at 37° C. according to the methods described herein. The adhesive comprises at least 5% by weight of the adhesive of a tackifier.

Abstract: A hotmelt composition comprising, a low molecular weight metallocene-catalyzed polymer, a high molecular weight polymer, an amorphous polyolefin and a tackifier. The hotmelt composition is particularly useful in absorbent articles such as diapers. The hotmelt composition provides especially good nonwoven-film bonds but can also be used for nonwoven-nonwoven bonds.

Abstract: The invention provides hydrophilic hot melt adhesive composition with improved water wetting properties. The hydrophilic hot melt adhesive is particularly suitable in the manufacture of disposable nonwoven articles.

Abstract: A hotmelt composition comprises at least three co-polymers defined by their chemistry and molecular weight. The hotmelt composition may be without tackifiers. The hotmelt can be used in absorbent articles such as diapers comprising two substrates at least partially attached by the hotmelt composition. The hotmelt provides especially good nonwoven-nonwoven bond and nonwoven-film bond.

Abstract: Described herein is an absorbent article having an absorbent core. The absorbent core includes a superabsorbent polymer material and an auxiliary adhesive. The auxiliary adhesive includes from about 20% to about 70% of a first polymer and from about 30% to about 80% of a second polymer. The auxiliary adhesive has a Shear Viscosity at 10 (1/s) at 230° C. of from about 300 mPa·s to about mPa·s.

Abstract: A hotmelt adhesive comprising a metallocene-catalyzed polyolefin and a hydrophilic melt additive. The adhesive is permanently hydrophilic and can be in particular used to bond components of a disposable hygienic article such as a diaper.

Abstract: An absorbent article, preferably a disposable absorbent article such as a diaper, is disclosed having an absorbent core which imparts increased wearing comfort to the article and makes it thin and dry. The absorbent core useful for an absorbent article comprises a substrate layer, a discontinuous layer of absorbent material, and a layer of thermoplastic material. A second surface of the discontinuous layer of absorbent material is in at least partial contact with a first surface of the substrate layer. Portions of a second surface of the layer of thermoplastic material are in direct contact with the first surface of the substrate layer and portions of said second surface of the layer of thermoplastic material are in direct contact with a first surface of the discontinuous layer of absorbent material. A process for providing a storage layer for an absorbent core useful in an absorbent article is further disclosed.

Abstract: Described herein is an absorbent article having an absorbent core. The absorbent core includes a superabsorbent polymer material and a superabsorbent polymer immobilizing material. The superabsorbent polymer immobilizing material includes from about 20% to about 70% of a first polymer and from about 30% to about 80% of a second polymer. The superabsorbent polymer immobilizing material has a Shear Viscosity at 10 (1/s) at 230° C. of from about 300 mPa·s to about 10,000 mPa·s.

Abstract: Grafted, crosslinked cellulosic materials include cellulose fibers and polymer chains composed of at least one monoethylenically unsaturated acid group-containing monomer (such as acrylic acid) grafted thereto, in which one or more of said cellulose fibers and said polymer chains are crosslinked (such as by intra-fiber chain-to-chain crosslinks). Some of such materials are characterized by a wet bulk of about 10.0-17.0 cm3/g, an IPRP value of about 1000 to 7700 cm2/MPa·sec, and/or a MAP value of about 7.0 to 38 cm H2O. Methods for producing such materials may include grafting polymer chains from a cellulosic substrate, followed by treating the grafted material with a crosslinking agent adapted to effect crosslinking of one or more of the cellulosic substrate or the polymer chains. Example crosslinking mechanisms include esterfication reactions, ionic reactions, and radical reactions, and example crosslinking agents include pentaerythritol, homopolymers of the graft species monomer, and hyperbranched polymers.

Abstract: The invention relates to thermoplastic moulding materials comprising styrene block copolymers and propylene-based copolymers, wherein the SBC polymers comprise a styrene content of 5 to 40% by weight and the backbone of the propylene copolymers has a weight-average molecular weight Mw<10 000 g/mol. The thermoplastic moulding materials are suitable for affixing granules due to their melt viscosity and their mechanical properties.

Abstract: Grafted, crosslinked cellulosic materials include cellulose fibers and polymer chains composed of at least one monoethylenically unsaturated acid group-containing monomer (such as acrylic acid) grafted thereto, in which one or more of said cellulose fibers and said polymer chains are crosslinked (such as by intra-fiber chain-to-chain crosslinks). Some of such materials are characterized by a wet bulk of about 10.0-17.0 cm3/g, an IPRP value of about 1000 to 7700 cm2/MPa·sec, and/or a MAP value of about 7.0 to 38 cm H2O. Methods for producing such materials may include grafting polymer chains from a cellulosic substrate, followed by treating the grafted material with a crosslinking agent adapted to effect crosslinking of one or more of the cellulosic substrate or the polymer chains. Example crosslinking mechanisms include esterfication reactions, ionic reactions, and radical reactions, and example crosslinking agents include pentaerythritol, homopolymers of the graft species monomer, and hyperbranched polymers.

Abstract: The invention relates to thermoplastic molding compounds having melt viscosities of less than 30,000 mPas for use as a hot-melt adhesive, comprising the components A and B, wherein component A comprises one or more C3/C2 copolymers each produced with metallocene catalysts and each having a melt viscosity at 170° C. of less than 20,000 mPas, measured according to DIN 53019, and a molecular weight MW of 1000 g/mol to 50,000 g/mol, and component B comprises one or more C2/C3 copolymers each produced with metallocene catalysts and each having a melt flow index MI of 1 to 100 g/m in, measured at 190° C./2.16 kg, according to ASTM D 1238, and a molecular weight MW of 50,000 g/mol to 300,000 g/mol. Said thermoplastic molding compounds, because of the viscosity and mechanical properties thereof, are suitable for fiber mesh applications.

Abstract: Described herein is an absorbent article. The absorbent article includes an assembly of components and an adhesive composition joining at least two of the assembly of components together. The adhesive composition includes from about 50 wt. % to about 80 wt. % of one or more copolymers and a blend of one or more heterophase copolymers. The one or more copolymers include from about 30 mole % to about 70 mole % of monomer units selected from ethylene. 1-butene, and mixtures thereof. The one or more copolymers also include from about 30 mole % to about 70 mole % of propene monomer units. The adhesive composition is free of polyisobutylene and has a viscosity of from about 2,000 mPa·s to about 11,500 mPa·s at 150° C.

Abstract: Described herein is an adhesive composition including a copolymer. The adhesive composition has a viscosity of from about 2,000 mPa·s to about 11,500 mPa·s at 150° C. The adhesive composition has a Storage Modulus at 37° C. of from about 3 MPa to 9.5 MPa. The adhesive composition has a Yield Stress at 37° C. of from about 0.8 MPa to about 1.45 MPa.

Abstract: An hotmelt adhesive for absorbent article (20), wherein the hotmelt adhesive comprises at least one low molecular weight metallocene-catalyzed polyolefin, at least one high molecular weight polyolefin having a peak molecular weight of from 130,000 g/mol to 700,000 g/mol and at least one tackifier. The hotmelt adhesive comprises less than 10% by weight of mineral oil. The hotmelt adhesive is particularly useful to form a core wrap bond (82, 84, 86) and/or a patch-to-core bond (78).

Abstract: A fibrous layer having a first side and an opposed second side. The fibrous layer includes a hotmelt composition that at least partially coats and binds the fibers of the fibrous layer at the surface of at least one of the first side and second side.

Abstract: A laminate including a substrate layer and a fibrous layer. The fibrous layer includes cellulose fibers and irregularly shaped lumps of a hotmelt material. The lumps of hotmelt material may at least partially bond the cellulose fibers together, thus increasing the integrity and resilience of the fibrous layer.

Abstract: Absorbent articles, such as diapers or sanitary napkins, comprising a hydrophilic hot melt adhesive with water wetting properties. The hydrophilic hot melt adhesive comprises an ethylene copolymer selected from the group consisting of ethylene vinyl acetate, ethylene n-butyl acrylate, ethylene octene, ethylene propylene, ethylene butene propylene, and mixtures thereof and a nonionic, fatty alcohol ethoxylate surfactant. The hot melt adhesive is particularly suitable for bonding a nonwoven to another component of the article.

Abstract: A hotmelt composition comprising, a low molecular weight metallocene-catalyzed polymer, a high molecular weight polymer, an amorphous polyolefin and a tackifier. The hotmelt composition is particularly useful in absorbent articles such as diapers. The hotmelt composition provides especially good nonwoven-film bonds but can also be used for nonwoven-nonwoven bonds.

Abstract: An absorbent article, preferably a disposable absorbent article such as a diaper, is disclosed that provides an improved immobilization of absorbent polymer material when the article is fully or partially urine loaded. This absorbent core is useful for providing an absorbent article of increased wearing comfort. Specifically disclosed is an absorbent core useful for an absorbent article comprising a substrate layer and absorbent material, the absorbent material comprising an absorbent polymer material, the absorbent material optionally comprising absorbent fibrous material, the absorbent fibrous material not representing more than 20% of the weight of absorbent polymer material, wherein the absorbent material is immobilized when wet such that the absorbent core achieves a wet immobilization of more than 50%, preferably of more than 60%, 70%, 80% or 90% according to the Wet Immobilization Test described herein.