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WO2010021572A1 - Produit de stratifié papier mince/non-tissé - Google Patents

Produit de stratifié papier mince/non-tissé Download PDF

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Publication number
WO2010021572A1
WO2010021572A1 PCT/SE2008/000473 SE2008000473W WO2010021572A1 WO 2010021572 A1 WO2010021572 A1 WO 2010021572A1 SE 2008000473 W SE2008000473 W SE 2008000473W WO 2010021572 A1 WO2010021572 A1 WO 2010021572A1
Authority
WO
WIPO (PCT)
Prior art keywords
laminate
tissue paper
tissue
fibers
weight
Prior art date
Application number
PCT/SE2008/000473
Other languages
English (en)
Inventor
Daniel Solberg
Hannu Ahoniemi
Hans Wallenius
Sara LUNDSTRÖM
Urban Widlund
Original Assignee
Sca Hygiene Products Ab
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Sca Hygiene Products Ab filed Critical Sca Hygiene Products Ab
Priority to PCT/SE2008/000473 priority Critical patent/WO2010021572A1/fr
Publication of WO2010021572A1 publication Critical patent/WO2010021572A1/fr

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B29/00—Layered products comprising a layer of paper or cardboard
    • B32B29/02—Layered products comprising a layer of paper or cardboard next to a fibrous or filamentary layer
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B7/00—Layered products characterised by the relation between layers; Layered products characterised by the relative orientation of features between layers, or by the relative values of a measurable parameter between layers, i.e. products comprising layers having different physical, chemical or physicochemical properties; Layered products characterised by the interconnection of layers
    • B32B7/02—Physical, chemical or physicochemical properties
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B3/00—Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar shape; Layered products comprising a layer having particular features of form
    • B32B3/26—Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar shape; Layered products comprising a layer having particular features of form characterised by a particular shape of the outline of the cross-section of a continuous layer; characterised by a layer with cavities or internal voids ; characterised by an apertured layer
    • B32B3/30—Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar shape; Layered products comprising a layer having particular features of form characterised by a particular shape of the outline of the cross-section of a continuous layer; characterised by a layer with cavities or internal voids ; characterised by an apertured layer characterised by a layer formed with recesses or projections, e.g. hollows, grooves, protuberances, ribs
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B7/00—Layered products characterised by the relation between layers; Layered products characterised by the relative orientation of features between layers, or by the relative values of a measurable parameter between layers, i.e. products comprising layers having different physical, chemical or physicochemical properties; Layered products characterised by the interconnection of layers
    • B32B7/04—Interconnection of layers
    • B32B7/12—Interconnection of layers using interposed adhesives or interposed materials with bonding properties
    • 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
    • D04H1/42—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
    • D04H1/425—Cellulose series
    • 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
    • D04H1/42—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
    • D04H1/4266—Natural fibres not provided for in group D04H1/425
    • 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
    • D04H1/42—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
    • D04H1/4282—Addition polymers
    • D04H1/4291—Olefin series
    • 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
    • D04H1/42—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
    • D04H1/4326—Condensation or reaction polymers
    • D04H1/435—Polyesters
    • 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
    • D04H13/00—Other non-woven fabrics
    • 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
    • D04H3/005—Synthetic yarns or filaments
    • D04H3/007—Addition polymers
    • 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
    • D04H5/00—Non woven fabrics formed of mixtures of relatively short fibres and yarns or like filamentary material of substantial length
    • D04H5/02—Non woven fabrics formed of mixtures of relatively short fibres and yarns or like filamentary material of substantial length strengthened or consolidated by mechanical methods, e.g. needling
    • D04H5/03—Non woven fabrics formed of mixtures of relatively short fibres and yarns or like filamentary material of substantial length strengthened or consolidated by mechanical methods, e.g. needling by fluid jet
    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
    • D21H27/00—Special paper not otherwise provided for, e.g. made by multi-step processes
    • D21H27/002—Tissue paper; Absorbent paper
    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
    • D21H27/00—Special paper not otherwise provided for, e.g. made by multi-step processes
    • D21H27/30—Multi-ply
    • D21H27/38—Multi-ply at least one of the sheets having a fibrous composition differing from that of other sheets
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2250/00—Layers arrangement
    • B32B2250/40—Symmetrical or sandwich layers, e.g. ABA, ABCBA, ABCCBA
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2262/00—Composition or structural features of fibres which form a fibrous or filamentary layer or are present as additives
    • B32B2262/06—Vegetal fibres
    • B32B2262/062—Cellulose fibres, e.g. cotton
    • B32B2262/067—Wood fibres
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2307/00—Properties of the layers or laminate
    • B32B2307/40—Properties of the layers or laminate having particular optical properties
    • B32B2307/402—Coloured
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2307/00—Properties of the layers or laminate
    • B32B2307/70—Other properties
    • B32B2307/718—Weight, e.g. weight per square meter
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2307/00—Properties of the layers or laminate
    • B32B2307/70—Other properties
    • B32B2307/72—Density
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2555/00—Personal care

Definitions

  • the present invention refers to a tissue paper / nonwoven laminate comprising outer plies of tissue paper and an inner ply of nonwoven material.
  • the laminate is especially adapted for products like premium table napkins, premium handwiping towels, facial tissue and the like.
  • Airlaid table napkins are today usually made of textiles. These textile napkins are woven materials mainly consisting of cotton or linen. Airlaid webs of wood pulp fibers bonded by a bonding agent, for example latex, and which have a more textile feeling than wetlaid tissue, have also been used as table napkins in a quality range between textile napkins and paper napkins. However airlaid napkins sometimes tend to have a rather rough surface, which can feel somewhat synthetic or "rubbery" due to the latex addition. Airlaid napkins also suffer from an acid odour originating from the latex binder.
  • Laminates of tissue paper and nonwoven materials are further known in different types of applications, especially when higji strength is required, for example in wipes.
  • US-A-6,060,149 discloses a laminated wiping article comprising an apertured dry creped tissue layer and a nonwoven layer comprising synthetic fibers.
  • the tissue layer is more extensible in a wetted state than the nonwoven layer. Selected portions of the tissue layer are adhesively bonded to the nonwoven layer.
  • EP-A-O 097 036 discloses a strong absorbent industrial wiper comprising a reinforcing centre ply of nonwoven, and outer plies of absorbent tissue. At least one of the outer plies of absorbent tissue alone has a basis weight between 30 and 90 g/m 2 .
  • GB-A-1 242 572 discloses a laminated material comprising a thermoplastics-bonded nonwoven layer and on each face thereof a layer of soft tissue paper, which has been bonded to the nonwoven layer by heating the thermoplastics material in said layer.
  • the basis weight of each tissue layer is between 20 and 50 g/m 2 .
  • US-A-3,958,055 discloses a tissue/nonwoven laminate comprising outer plies of creped tissue and an inner ply of an isotropic, reinforcing textile length fiber web, such as a carded web. The plies are bonded together by adhesive.
  • DE-A-10 2004 024 551 discloses a tissue/airlaid laminate useful as table napkin, table cloth and the like.
  • the laminate comprises at least one tissue layer having a basis weight between 10 and 35 g/m 2 and a specified dry strength, and an airlaid layer comprising thermoplastic binder fibers.
  • An object of the present invention is to provide a tissue paper / nonwoven laminate with a sensory and aesthetic perception close to textiles.
  • one or both outer plies of tissue paper has a basis weight between 13 and 18 g/m 2 , preferably between 14 and 17 g/m 2 .
  • the inner ply of hydroentangled nonwoven fabric has a basis weight between 50 and 70 g/m 2 .
  • the inner ply of hydroentangled nonwoven fabric comprises at least 40% by weight pulp fibers, preferably at least 50% by weight pulp fibers and the rest manmade fibers and/or natural fibers.
  • said manmade or natural fibers have a fiber length of at least 3 mm.
  • At least one of the plies of tissue paper is a through-air-dried tissue.
  • both outer plies of tissue paper are through-air dried tissue.
  • one or both outer plies of tissue paper is/are a dry creped tissue.
  • At least one of the outer plies of tissue paper is a multilayered tissue comprising at least one layer with at least 50% by weight hardwood fibers and at least one layer with at least 50% by weight softwood fibers.
  • hydroentangled nonwoven fabric is wetlaid.
  • the layers of tissue paper are adhesively bonded to the inner ply of hydroentangled nonwoven in a bonding pattern having a bonded area of between 2 and 15% and preferably between 5 and 10% of the surface area of the laminate.
  • the bonding density is in a further aspect 20 and 100 bonding sites per cm 2 .
  • At least one ply of tissue paper is embossed.
  • said embossing pattern comprising a plurality of embossing points configured so as to create a diagonal striped pattern extending obliquely across the striped pattern of the inner hydroentangled nonwoven web. This embossing pattern provides a textile-like aesthetic impression as well as an enhanced tactile feeling of the laminate.
  • a tissue paper is defined as a soft absorbent paper having a basis weight below 65 g/m 2 and typically between 10-and 50 g/m 2 .
  • the tissue paper plies in the laminate according to the invention each have a basis weight between 12 and 20 g/m 2 .
  • the density of tissue paper is typically below 0.60 g/cm 3 , preferably below 0.30 g/cm 3 and more preferably between 0.06 and 0.20 g/cm 3 .
  • Tissue paper can be manufactured and dried in different ways.
  • a method which is commonly used for drying tissue paper is so called yankee drying.
  • yankee drying the moist paper web is pressed against a steam-heated yankee cylinder, which can have a very large diameter.
  • the paper web is usually creped against the yankee cylinder. This method may also be referred to as dry creping.
  • TAD through-air-drying
  • the present invention refers to all types of tissue paper.
  • the tissue paper may be creped or non-creped. The creping may take place in wet or dry condition. It may further be foreshortened by any other methods, such as so called rush transfer between wires.
  • the fibers contained in the tissue paper are mainly pulp fibers from chemical pulp, mechanical pulp, thermo mechanical pulp, chemo mechanical pulp and/or chemo thermo mechanical pulp (CTMP).
  • the fibers may also be recycled fibers.
  • the tissue paper may also contain other types of fibers enhancing e.g. strength, absorption or softness of the paper. These fibers may be made from regenerated cellulose or synthetic material such as polyolefins, polyesters, polyamides etc.
  • the tissue paper coming out from the tissue paper machine may comprise one or more layers. In the case of more than one layer this is accomplished either in a multi-layered headbox, by forming a new layer on top of an already formed layer or by couching together already formed layers. These layers can not or only with considerable difficulty be separated from each other and are joined mainly by hydrogen bonds.
  • the different layers may be identical or may have different properties regarding for example fibre composition and chemical composition.
  • a paper comes out from the paper machine as a single-ply paper sheet, which later in the converting process can be combined with other plies by a lamination process, such as gluing and or embossing, to form a multi-ply material.
  • a lamination process such as gluing and or embossing
  • a single ply may comprise one, two or more layers, for example obtained by using a multi-layered headbox, by forming the web layers on top of each other in a sequential mode, or by forming each layer in a separate forming unit before couching the layers together in the paper machine while still in a wet condition.
  • Hydroentangling or spunlacing is a technique introduced during the 1970'ies, see e g CA patent no. 841 938.
  • the method involves forming a fibrous web, which is either drylaid or wetlaid, after which the fibres are entangled by means of very fine water jets under high pressure. Several rows of water jets are directed against the fibre web which is supported by a movable fabric or perforated drum. The hydroentangled fibre web is then dried.
  • the fibres that are used in the material can be synthetic or regenerated staple fibres, e.g. polyester, polyamide, polypropylene, rayon or the like, pulp fibres or mixtures of pulp fibres and staple fibres.
  • the fibres or part of the fibers may also be in the form of continuous filaments, such as spunlaid or meltblown filaments. Combinations of continuous filaments with pulp fibers and/or staple fibers may further be used.
  • Figure 1 is a schematic cross section through an embodiment of a tissue paper / nonwoven laminate according to the invention.
  • Figure 2 is a schematic plan view of another embodiment of a tissue paper / nonwoven laminate according to the invention.
  • Figure 3 is a photo of a laminate according to the invention..
  • the laminate 10 according to the present invention comprises three plies, an inner ply 11 of nonwoven material and two outer plies 12 and 13 of tissue paper, which are bonded together by adhesive. In other embodiments more than three plies may be present in the laminate, for example two or more inner plies.
  • the inner ply 11 is a hydroentangled nonwoven fabric comprising a mixture of pulp fibers and manmade fibers and/or natural fibers.
  • the manmade fibers may be staple fibers and/or continuous filaments, such as spunbond or meltblown fibers.
  • the content of pulp fibers in the hydroentangled nonwoven ply 11 should be between 30 and 90% by weight, while 10 to 70% by weight are manmade fibers or natural fibers.
  • Manmade fibers may be made from synthetic polyolefins, such as polyethylene and polypropylene, polyamides, polyesters and polylactides. Manmade fibers may also be in the form of regenerated cellulose, such as viscose, rayon, lyocell and the like.
  • natural fibers with a relatively long fiber length can be used, e g at least 3 and preferably at least 6 mm, such as seed hair fibers, e g cotton, kapok and milkweed; leaf fibers e g sisal, abaca, pineapple, New Zealand hamp, or bast fibers, e g. flax, hemp, ramie, jute, kenaf.
  • the hydroentangled nonwoven may also comprise a mixture of pulp fibers, continuous filaments and staple manmade fibers or natural fibers.
  • the staple fibers and natural fibers have a length of at least 3 mm and more preferably at least 6 mm.
  • the pulp fibers may have a shorter length, even below 1 mm.
  • a fibrous web is formed either by wet forming (including foam forming) or dry forming.
  • wet forming the pulp and staple fibres are slurried in conventional way, either mixed together or first separately slurried and then mixed, and conventional papermaking additives such as wet and/or dry strength agents, retention aids, dispersing agents, may be added, to produce a well mixed slurry of pulp and staple fibres in water.
  • the fibrous web is hydroentangled by means of very fine water jets under high pressure. Several rows of water jets are directed against the fibre web which is supported on a forming fabric. When the jets of high-pressure water impinge on the fibres they will mix and entangle with each other.
  • the fibrous web may be entangled from ones side or preferably from both sides. The entangling water is drained off through the forming fabric and the entangled web is dried in a drying station.
  • the hydroentangling station can include several transverse bars with rows of nozzles from which very fine water jets under very high pressure are directed against the fibrous web to provide an entangling of the fibres.
  • the water jet pressure can then be adapted to have a certain pressure profile with different pressures in the different rows of nozzles.
  • the fibrous web can before hydroentangling be transferred to a second entangling fabric.
  • the web can also prior to the transfer be hydroentangled by a first hydroentangling station with one or more bars with rows of nozzles.
  • dry forming a fibrous web is formed by dry laying the fibres.
  • the dry formed fibrous web is hydroentangled in a similar way as a wet formed web.
  • the hydroentangling water jets will create a visible striped pattern in the entangled web comprising a plurality of valleys 14 and ridges 15.
  • the distance between adjacent valleys 14 correspond to the distance between water jets in the entangling nozzles and is between 0.3 and 2 mm.
  • This striped pattern resembles warp threads and will give a textile appearance to the hydroentangled nonwoven material.
  • Such an uneven distance, d, between the entangling stripes can be achieved by having different spacing between the entangling nozzles or simply by having entangling nozzles that are a bit worn.
  • the hydroentangled nonwoven web has a basis weight between 40 and 80 g/m 2 , preferably between 50 and 70 g/m 2 .
  • the sum of the basis weights of these plies should be within the stated limits.
  • the density of the hydroentangled web will normally vary in cross machine direction and is higher in the valleys than on the ridges.
  • the hydroentangled nonwoven web or at least a part of the fibres used in said web may be coloured fibres.
  • the tissue plies 12 and 13 should be relatively thin with a basis weight each of between 12 and 20 g/m 2 , preferably between 13 and 18 g/m 2 and more preferably between 14 and 16 g/m 2 . This will ensure that the tissue plies 12 and 13 are sufficiently transparent to allow the striped pattern of the inner nonwoven ply 11 to be visible through the tissue plies.
  • the tissue plies may be coloured, or at least a part of the fibres contained therein may be coloured.
  • the tissue plies 12 and 13 can be made of an optional tissue paper such as conventional dry creped tissue or through-air-dried (TAD) tissue, the latter usually being softer and bulkier than dry creped tissue.
  • TAD through-air-dried
  • Each tissue ply may comprise two or more layers, wherein at least an outer layer comprises a fiber mixture with properties beneficial for good sensory impression and the back layer (facing the hydroentangled nonwoven) and/or a middle layer comprises fibers with properties beneficial for strength and/or aesthetical impression.
  • a good sensory impression can be obtained by having a high proportion, which means at least 50% by weight and preferably at least 75% by weight, short fibers in the form of hardwood, such as eucalyptus, birch or acacia. It is preferred that these short fibers are only slightly or not at all refined, since such a fiber mixture will be beneficial for softness and smoothness.
  • the aesthetic impression can be enhanced with relatively strong fibers in the back and/or middle layer, for example by using a fiber mixture with a high proportion of long fibers in the form of softwood fibers, which means at least 50% by weight and preferably at least 75% by weight softwood, especially refined softwood.
  • a fiber mixture will give strength to the tissue ply which helps to maintain an embossing pattern in the material, thus enhancing the aesthetic impression of the material.
  • the tissue plies 12 and 13 may be embossed with a macro- and/or micro embossment pattern for example designed to reinforce the textile appearance of the laminate.
  • Macro- embossing is defined as an embossing pattern comprising less than 30 embossing elements per cm 2
  • microembossing is defined as an embossing pattern comprising at least 30 embossing elements per cm 2 .
  • the embossing may occur on the tissue plies before laminating them to the hydroentangled nonwoven web 11 or on the combined plies.
  • Figure 1 shows no embossment of the tissue plies 12 and 13, while Figure 2 shows an embossing pattern in the form of a plurality of small points 16 configured so as to create a diagonal striped pattern extending obliquely across the striped pattern of the inner hydroentangled nonwoven web 11.
  • This diagonal striped pattern reinforces the textile appearance of the laminate.
  • the depth of the embossments should be at least 0.1 mm in order to provide a clearly visible effect.
  • Lamination is preferably done by adhesive, such as glue.
  • the glue pattern can be full- coated or preferably covering only part of the surfaces of the plies.
  • a suitable glue pattern is a pattern of small glue sites in the form of dots, lines or spots, including any geometrical or decorative shapes.
  • the glue pattern may have a bonding area of between 2 and 15%, preferably between 5 and 10% calculated as the part of the surface area of the laminate that is occupied by the glue sites.
  • the bonding pattern and embossment pattern can be the same if the glue lamination occurs in connection with the embossing, for example glue is applied on the tops of the embossments, after which the respective tissue ply is laminated to the nonwoven material.
  • Boding density is defined as the number of bonding sites, e.g. glue sites, per area unit. It is preferred that the glue pattern has a bonding density of between 20 and 100 bonding sites per cm 2 . Preferably it has a bonding density of between 30 and 80 and more preferably between 30 and 50 bonding sites per cm 2 . With a high bonding density the laminate becomes less drapable and soft.
  • a relatively large bonding area may be provided with a relatively small number of bonding sites, as compared to a bonding pattern of small bonding sites, for example in the form of dots, which have to arranged tighter in order to provide the same bonding area as for a pattern of larger bonding size.
  • bonding area and bonding density are important.
  • thermobonding wherein at least some of the plies contain thermoplastic material or alternatively a thermoplastic material is added between the plies.
  • the thermal bonding may take place by heat bonding between patterned heated rolls, by ultrasonic welding etc.
  • Two outer plies each consisting of TAD tissue, basis weight 15 g/m 2 , formed with a 3- layered headbox and comprising: layer 1 (hood layer): Eucalyptus, unrefined; layer 2 (middle layer): softwood pulp, refined 40 kWh/t, 2 kg/ton wet strength agent; layer 3 10 (Yankee layer) Eucalyptus, unrefined.
  • layer 1 hood layer
  • layer 2 softwood pulp, refined 40 kWh/t, 2 kg/ton wet strength agent
  • layer 3 10 Yamaleee layer Eucalyptus, unrefined.
  • the proportion of basis weights of the three layers were: 40% in layer 1 and 30% each in layers 2 and 3.
  • the spunlaid filaments and 20 wetlaid cellulose and synthetic staple fibres were mixed and bonded together by hydroentanglement in two steps of five manifolds each.
  • the first step of manifolds used a pressure of 40 to 100 bars and the second step of manifolds used a pressure of 60 to 100 bars.
  • the spacing between the hydroentangling nozzles were in each manifold was 0.6 mm. The hydroentanglement was done from only one side.
  • the machine speed was 170 25 m/min.
  • Two outer plies each consisting of TAD tissue, basis weight 17 g/m 2 formed with a two- layered headbox and comprising: layer 1 (hood layer): 80% by weight softwood pulp and 30 20% by weight broke, layer 2 (Yankee layer): 100% hardwood pulp.
  • layer 1 hood layer
  • softwood pulp 80% by weight softwood pulp
  • layer 2 80% by weight
  • the proportion of basis weights of the two layers were: 40% in layer 1 and 60% in layer 2.
  • Laminate C One inner ply consisting of wetlaid hydroentangled nonwoven, basis weight 55-57 g/m 2 , with the same fibre composition as for laminate A. 35 Laminate C:
  • Two outer plies each consisting of dry creped tissue, basis weight 14.5 g/m 2 , with the following fibre composition: 10 weight% softwood sulphate pulp, 30 weight% softwood sulphite pulp, 60 weight% eucalyptus pulp.
  • One inner ply consisting of wetlaid hydroentangled nonwoven, basis weight 55-57 g/m 2 , with the same fibre composition as for laminate A.
  • the bonding pattern contained 42 glue sites per cm 2 .
  • the bonding area was 7.5%.
  • the laminates had the following characteristics:
  • Figure 3 is a photo of laminate in which the striped pattern of the inner hydroentangled nonwoven is clearly visible.
  • the embossing pattern of an outer tissue ply is also clearly visible.
  • This embossing pattern is in the form of a plurality of small points 16 configured so as to create a diagonal striped pattern extending obliquely across the striped pattern of the inner hydroentangled nonwoven web.
  • This diagonal striped pattern reinforces the textile appearance of the laminate.
  • the depth of the embossing points should be at least 0.1 mm in order to provide a clearly visible effect. All laminates A, B and C had a sensory and aesthetic perception close to textiles, due to their drapability, soft surface and visible striped pattern of the hydroentangled nonwoven middle ply.
  • the diagonal embossing pattern caused by the lamination reinforced the textile appearance. They had a surface softness close to mangled textiles and both surface softness and bulk softness were similar to what is found in textile napkins.
  • the laminates had a feeling like single ply materials, due to the rather dense lamination pattern in the form of a plurality of glue points.

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  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Nonwoven Fabrics (AREA)
  • Paper (AREA)

Abstract

L'invention porte sur un stratifié papier mince/non-tissé comprenant des plis externes (12, 13) de papier mince et un pli interne (11) de matériau non-tissé. Les plis externes (12, 13) de papier mince ont chacun une masse de base entre 12 et 20 g/m2 et le pli interne (11) est un tissu non-tissé hydrolié ayant une masse de base entre 40 et 80 g/m2 comprenant entre 30 et 90 % en poids de fibres de pâte et entre 10 et 70 % en poids de fibres ou filaments synthétiques et/ou de fibres naturelles. Le tissu non-tissé hydrolié a un motif rayé tridimensionnel visible de crêtes et de vallées alternées, provoqué par des jets d'eau hydroliés, la distance entre des vallées adjacentes étant de 0,3 à 2 mm et le motif rayé étant visible depuis l'extérieur du stratifié à travers les plis de tissu.
PCT/SE2008/000473 2008-08-19 2008-08-19 Produit de stratifié papier mince/non-tissé WO2010021572A1 (fr)

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WO2013095241A1 (fr) * 2011-12-22 2013-06-27 Sca Hygiene Products Ab Procédé de production d'un matériau non tissé hydroenchevêtré et matériau non tissé hydroenchevêtré
EP3123914A4 (fr) * 2014-03-28 2017-03-15 Unicharm Corporation Lingette humide et procédé de fabrication de lingette humide
EP3123913A4 (fr) * 2014-03-28 2017-03-15 Unicharm Corporation Lingette humide et procédé de fabrication associé
WO2017097341A1 (fr) * 2015-12-08 2017-06-15 Sca Hygiene Products Ab Matériau non tissé à motif
WO2018075522A1 (fr) * 2016-10-17 2018-04-26 The Procter & Gamble Company Articles contenant des structures fibreuses
CN108729330A (zh) * 2018-05-17 2018-11-02 合肥金同维低温科技有限公司 一种冬季道路施工养护用保温毡毯
WO2019040569A1 (fr) * 2017-08-22 2019-02-28 The Procter & Gamble Company Articles contenant une structure fibreuse multicouche
EP3374176A4 (fr) * 2015-11-12 2019-06-12 First Quality Nonwovens, Inc. Composite non tissé comprenant une couche de bande de fibre naturelle et son procédé de formation
US10647088B2 (en) 2016-10-17 2020-05-12 The Procter & Gamble Company Fibrous structures exhibiting improved reopenability
EP3715515A1 (fr) * 2019-03-25 2020-09-30 Suominen Corporation Procédé de préparation d'une bande non tissée
SE1951524A1 (en) * 2019-12-20 2021-06-21 Essity Hygiene & Health Ab Absorbent fibrous web
US20220380985A1 (en) * 2019-10-21 2022-12-01 Kimberly-Clark Worldwide, Inc. Absorbent articles and methods for manufacturing same
US11584103B2 (en) * 2020-07-13 2023-02-21 American Custom Converting, L.L.C. Multi-layered product having an embossed interior layer and a method for making the product
US11602466B2 (en) 2019-12-20 2023-03-14 Essity Hygiene And Health Aktiebolag Absorbent hygienic article for absorbing body fluids
EP4076317A4 (fr) * 2019-12-20 2023-07-19 Essity Hygiene and Health Aktiebolag Article hygiénique absorbant pour l'absorption de fluides corporels
US12031248B2 (en) 2018-07-10 2024-07-09 Kimberly-Clark Worldwide, Inc. Micro- and nano-structured fiber-based substrates

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GB2114173A (en) * 1982-01-31 1983-08-17 Uni Charm Corp A method for the production of patterned nonwoven fabric
WO1997002133A2 (fr) * 1995-06-30 1997-01-23 Kimberly-Clark Worldwide, Inc. Stratifies ondules de non tisses et de film
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WO2013095241A1 (fr) * 2011-12-22 2013-06-27 Sca Hygiene Products Ab Procédé de production d'un matériau non tissé hydroenchevêtré et matériau non tissé hydroenchevêtré
EP3123914A4 (fr) * 2014-03-28 2017-03-15 Unicharm Corporation Lingette humide et procédé de fabrication de lingette humide
EP3123913A4 (fr) * 2014-03-28 2017-03-15 Unicharm Corporation Lingette humide et procédé de fabrication associé
US20170114503A1 (en) * 2014-03-28 2017-04-27 Unicharm Corporation Wet wipe and method for manufacturing wet wipe
EP3374176A4 (fr) * 2015-11-12 2019-06-12 First Quality Nonwovens, Inc. Composite non tissé comprenant une couche de bande de fibre naturelle et son procédé de formation
WO2017097341A1 (fr) * 2015-12-08 2017-06-15 Sca Hygiene Products Ab Matériau non tissé à motif
RU2717928C2 (ru) * 2015-12-08 2020-03-26 Эссити Хайджин Энд Хелт Актиеболаг Рисунчатый нетканый материал
CN108291343A (zh) * 2015-12-08 2018-07-17 Sca卫生用品公司 图案化的非织造材料
US11292229B2 (en) 2016-10-17 2022-04-05 The Procter & Gamble Company Strong fibrous structures
US11591754B2 (en) 2016-10-17 2023-02-28 The Procter & Gamble Company Fibrous structure-containing articles
US12168854B2 (en) 2016-10-17 2024-12-17 The Procter & Gamble Company Fibrous structure-containing articles
US10385515B2 (en) 2016-10-17 2019-08-20 The Procter & Gamble Company Fibrous structure-containing articles
WO2018075509A1 (fr) * 2016-10-17 2018-04-26 The Procter & Gamble Company Articles contenant une structure fibreuse
US10647088B2 (en) 2016-10-17 2020-05-12 The Procter & Gamble Company Fibrous structures exhibiting improved reopenability
US12128665B2 (en) 2016-10-17 2024-10-29 The Procter & Gamble Company Fibrous structure-containing articles that exhibit consumer relevant properties
US12122137B2 (en) 2016-10-17 2024-10-22 The Procter & Gamble Company Fibrous structure-containing articles that exhibit consumer relevant properties
US11858245B2 (en) 2016-10-17 2024-01-02 The Procter & Gamble Company Fibrous structure-containing articles that exhibit consumer relevant properties
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US11701858B2 (en) 2016-10-17 2023-07-18 The Procter & Gamble Company Fibrous structure-containing articles that exhibit consumer relevant properties
US11235551B2 (en) 2016-10-17 2022-02-01 The Procter & Gamble Company Fibrous structure-containing articles that exhibit consumer relevant properties
US11285691B2 (en) 2016-10-17 2022-03-29 The Procter & Gamble Company Fibrous structure-containing articles that exhibit consumer relevant properties
US11285690B2 (en) 2016-10-17 2022-03-29 The Procter & Gamble Company Fibrous structure-containing articles that exhibit consumer relevant properties
US11292227B2 (en) 2016-10-17 2022-04-05 The Procter & Gamble Company Absorbent and compressible fibrous structures
US11292228B2 (en) 2016-10-17 2022-04-05 The Procter & Gamble Company Compressible and strong fibrous structures
WO2018075522A1 (fr) * 2016-10-17 2018-04-26 The Procter & Gamble Company Articles contenant des structures fibreuses
US11338544B2 (en) 2016-10-17 2022-05-24 The Procter & Gamble Company Absorbent and resilient fibrous structures
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US11732422B2 (en) 2017-08-22 2023-08-22 The Procter & Gamble Company Process for making multi-ply fibrous structure containing articles
WO2019040569A1 (fr) * 2017-08-22 2019-02-28 The Procter & Gamble Company Articles contenant une structure fibreuse multicouche
US10907308B2 (en) 2017-08-22 2021-02-02 The Procter & Gamble Company Multi-ply fibrous structure-containing articles
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US11767642B2 (en) 2017-08-22 2023-09-26 The Procter & Gamble Company Multi-ply fibrous structure-containing articles
CN108729330A (zh) * 2018-05-17 2018-11-02 合肥金同维低温科技有限公司 一种冬季道路施工养护用保温毡毯
US12031248B2 (en) 2018-07-10 2024-07-09 Kimberly-Clark Worldwide, Inc. Micro- and nano-structured fiber-based substrates
EP3715515A1 (fr) * 2019-03-25 2020-09-30 Suominen Corporation Procédé de préparation d'une bande non tissée
US11598033B2 (en) 2019-03-25 2023-03-07 Suominen Oyj Method for preparing a nonwoven web
US20220380985A1 (en) * 2019-10-21 2022-12-01 Kimberly-Clark Worldwide, Inc. Absorbent articles and methods for manufacturing same
CN114761634A (zh) * 2019-12-20 2022-07-15 易希提卫生与保健公司 吸收性纤维幅
SE1951524A1 (en) * 2019-12-20 2021-06-21 Essity Hygiene & Health Ab Absorbent fibrous web
SE545507C2 (en) * 2019-12-20 2023-10-03 Essity Hygiene & Health Ab Foam-formed hydro-entangled fibrous web, use thereof and manufacturing method
US11801173B2 (en) 2019-12-20 2023-10-31 Essity Hygiene And Health Aktiebolag Absorbent hygienic article for absorbing body fluids
EP4076316A4 (fr) * 2019-12-20 2023-07-19 Essity Hygiene and Health Aktiebolag Article hygiénique absorbant pour absorption de fluides corporels
EP4077785A4 (fr) * 2019-12-20 2024-02-07 Essity Hygiene and Health Aktiebolag Bande fibreuse absorbante
EP4076317A4 (fr) * 2019-12-20 2023-07-19 Essity Hygiene and Health Aktiebolag Article hygiénique absorbant pour l'absorption de fluides corporels
WO2021126042A1 (fr) * 2019-12-20 2021-06-24 Essity Hygiene And Health Aktiebolag Bande fibreuse absorbante
US11602466B2 (en) 2019-12-20 2023-03-14 Essity Hygiene And Health Aktiebolag Absorbent hygienic article for absorbing body fluids
US11584103B2 (en) * 2020-07-13 2023-02-21 American Custom Converting, L.L.C. Multi-layered product having an embossed interior layer and a method for making the product

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