Sca Hygiene Products Ab

Essity Hygiene and Health Aktiebolag

Sca Hygiene Products Aktiebolag

Hannu Ahoniemi

Mikael Strandqvist

Lars Fingal

Arie Venema

Gaatze Wijbenga

Maria Bogren

Anders Stralin

Daniel Burman

Anna Nihlstrand

Kent Malmgren

Ulrika Husmark

Anders Strålin

Mikael Stranqvist

Anders Strälin

A composite nonwoven sheet material includes pulp fibers, a reinforcement material and microfibers. The sheet material has one pulp-enriched first outer layer and one microfiber-enriched second outer layer, the reinforcement material is thereby interposed between the pulp-enriched first outer layer and the microfiber-enriched second outer layer and the pulp fibers and the microfibers penetrate the reinforcement material. Also disclosed is a process of producing such composite nonwoven sheet material and the use of such composite nonwoven sheet material.

Composite nonwoven sheet material

A process and an apparatus for producing nonwoven materials are disclosed. The process includes the following steps:

Process and apparatus for wetlaying nonwovens

A fibrous structure exhibits an absorbency time of equal to or less than 1.5 s and exhibits an antimicrobial effect.

Fibrous structure exhibiting an antimicrobial effect

A process for producing nonwoven materials is provided. The process includes: providing a three-phase (gas-liquid-solid) suspension, providing a first moving carrier sieve, applying the three-phase suspension onto the first moving carrier sieve to produce a fibrous web, removing aqueous residue of the three-phase suspension through the first carrier sieve, recycling the aqueous residue, pre-integrating the fibrous web by flushing the web with water and collecting flushed water, transferring the pre-integrated fibrous web from the first moving carrier sieve to a second moving carrier sieve, and hydroentangling the fibrous web. The three-phase suspension contains natural and/or manmade fibres, a surfactant, and air.

Process for producing nonwoven

A process and an apparatus for producing nonwoven materials are disclosed. The process comprises the following steps: a) providing a three-phase (gas-liquid-solid) suspension containing air, water, fibrous material and a surfactant, b) depositing the suspension onto a moving carrier sieve to produce a fibrous web on the carrier, c) removing aqueous residue of the suspension through the carrier sieve, d) conveying the aqueous residue through one or more phase separation tanks in an essentially horizontal direction while providing a depressurised headspace above the aqueous residue, e) recycling the aqueous residue conveyed in step d) to step a), f) preferably pre-integrating the fibrous web.

A hydroentangled nonwoven sheet material produced by a process including: 0) optionally providing a polymer web on a carrier; a) providing an aqueous suspension containing short fibers and a surfactant; b) depositing the aqueous suspension on the carrier; c) removing aqueous residue of the aqueous suspension deposited in step b) to form a fibrous web; b') depositing aqueous suspension on a surface of the fibrous web formed in step c); c&#x2032;) removing aqueous residue of the aqueous suspension deposited in step b&#x2032;) to form a combined fibrous web; d) hydroentangling the combined fibrous web; and optionally e) drying the hydroentangled web, and/or f) further processing and finalizing the dried, hydroentangled web the web to produce the nonwoven end material. The hydroentangled non-woven sheet material obtainable by this process has a low degree of surface irregularity and contains low residues of surfactants.

Process for producing nonwoven with improved surface properties

A hydroentangled integrated composite nonwoven material, includes a mixture of randomized continuous filaments, splittable shortcut staple fibers, and optionally non-splittable staple fibers. The splittable fibers should be 3-16 mm long bicomponent fibers. Preferably there should be no thermal bonding points between the filaments. The nonwoven material has improved textile feeling and reduced two-sidedness. The continuous filaments should preferably be spunlaid filaments. Some of the staple fibers can be colored. A process of producing such a nonwoven material is disclosed.

Hydroentangled split-fibre nonwoven material

The present invention relates to a nonwoven material for use as an absorbent wiping material produced by hydroentangling of a substrate web comprising at least one layer of fibers selected from amongst synthetic fibers, regenerated fibers and natural fibers, wherein the nonwoven material () has a base level hwith protuberances () on one side, wherein the protuberances () form at least a first and a second surface structure respectively in the form of first () and second () protuberances from the base level h, wherein the first protuberances () have a height hfrom the base level hand the second protuberances () have a height hfrom the base level h, where his higher than h, and each of the second protuberances () occupies an area of the surface of the base level at least 4 times greater than each of the first protuberances (). The present invention also relates to a method for producing a nonwoven material (), wherein hydroentangling of a substrate web (), which comprises natural fibers having a length of less than 10 mm, takes place on a surface-shaped carrier device () containing holes which form at least a first and a second pattern in the form of first and second holes respectively, wherein the second holes are at least 4 times larger than the first holes.

Nonwoven material and a method for producing nonwoven material

A method for producing a flushable hydroentangled moist wipe or hygiene tissue includes the steps of: dry-, wet-, or foam-forming a fibrous web on a moving support, hydroentangling said fibrous web in a hydroentangling station to form a hydroentangled nonwoven web. The moving support includes a plurality of protruding elongated elements protruding above the surface of the moving support. The protruding elements will produce weakenings in the hydroentangled web.

Method for producing a flushable hydroentangled moist wipe or hygiene tissue

The present invention relates to a nonwoven material intended for use in absorbent products produced by the hydroentangling of a substrate web comprising at least one layer of fibers selected from amongst synthetic fibers, regenerated fibers and natural fibers, wherein the nonwoven material () has a base level hwith protuberances () on one side, wherein the protuberances () form at least a first and a second surface structure respectively in the form of first () and second () protuberances from the base level h, wherein the first protuberances () have a height hfrom the base level and the second protuberances () have a height hfrom the base level h, where his higher than h, and each of the second protuberances () occupies an area of the surface of the base level at least 4 times greater than each of the first protuberances (). The invention also relates to an absorbent product containing a nonwoven material in accordance with the above.

Nonwoven material and absorbing article comprising nonwoven material

An improved hydroentangled well integrated composite nonwoven material, including a mixture of continuous filaments, synthetic staple fibers, and natural fibers which has a reduced twosidedness and an improved textile feeling. The synthetic staple fibers should have a length of 3 to 7 mm, and preferably there should be no thermal bondings between the filaments. The method of producing such a nonwoven material is also disclosed. The nonwoven includes a mixture of 10-50 w-% continuous filaments preferably chosen from polypropylene, polyesters and polylactides, 5-50 w-% synthetic staple fibers chosen from polyethylene, polypropylene, polyesters, polyamides, polylactides, rayon, and lyocell, and 20-85 w-% natural fibers, preferably pulp.

Hydroentangled nonwoven material

A method and device for manufacturing a nonwoven material by hydroentangling a fiber web by water jets at a high pressure, wherein the fiber web is supported by a moulded, close-meshed screen ( ) of a thermoplastic material during the hydroentanglement. The screen can be reinforced with reinforcement wires ( ).

Method and device for producing a nonwoven material

Method for producing a nonwoven material comprising at least one layer of continuous filaments, such as spunbond- or meltblown fibers. A first web of continuous filaments ( ) are laid on a wire ( ) or other permeable support member having a resilient extensibility in the transverse direction and which substantially resumes its original dimension when the extension is discontinued, that the wire is stretched in the transverse direction to at least 120% of its original width when the continuous filaments are laid on the wire. The stretching is discontinued after the continuous filaments have been laid on the wire.

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Landvetter, Sweden

Hannu Ahoniemi