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WO2019166585A1 - Materiau composite - Google Patents

Materiau composite Download PDF

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Publication number
WO2019166585A1
WO2019166585A1 PCT/EP2019/055058 EP2019055058W WO2019166585A1 WO 2019166585 A1 WO2019166585 A1 WO 2019166585A1 EP 2019055058 W EP2019055058 W EP 2019055058W WO 2019166585 A1 WO2019166585 A1 WO 2019166585A1
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WO
WIPO (PCT)
Prior art keywords
composite material
middle layer
material according
layer
nonwovens
Prior art date
Legal status (The legal status 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 status listed.)
Ceased
Application number
PCT/EP2019/055058
Other languages
German (de)
English (en)
Inventor
Maximilian Wagner
Clemens KEILHOLZ
Dominik Schmidt
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Lohmann Koester GmbH and Co KG
Original Assignee
Lohmann Koester GmbH and Co KG
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
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Publication of WO2019166585A1 publication Critical patent/WO2019166585A1/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
    • B32B5/00—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts
    • B32B5/02—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts characterised by structural features of a fibrous or filamentary layer
    • B32B5/022—Non-woven fabric
    • 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
    • B32B27/00—Layered products comprising a layer of synthetic resin
    • B32B27/12—Layered products comprising a layer of synthetic resin 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
    • B32B27/00—Layered products comprising a layer of synthetic resin
    • B32B27/30—Layered products comprising a layer of synthetic resin comprising vinyl (co)polymers; comprising acrylic (co)polymers
    • B32B27/302—Layered products comprising a layer of synthetic resin comprising vinyl (co)polymers; comprising acrylic (co)polymers comprising aromatic vinyl (co)polymers, e.g. styrenic (co)polymers
    • 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
    • B32B27/00—Layered products comprising a layer of synthetic resin
    • B32B27/32—Layered products comprising a layer of synthetic resin comprising polyolefins
    • 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
    • B32B27/00—Layered products comprising a layer of synthetic resin
    • B32B27/32—Layered products comprising a layer of synthetic resin comprising polyolefins
    • B32B27/327—Layered products comprising a layer of synthetic resin comprising polyolefins comprising polyolefins obtained by a metallocene or single-site catalyst
    • 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
    • B32B5/00—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts
    • B32B5/02—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts characterised by structural features of a fibrous or filamentary layer
    • B32B5/08—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts characterised by structural features of a fibrous or filamentary layer the fibres or filaments of a layer being of different substances, e.g. conjugate fibres, mixture of different 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
    • B32B5/00—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts
    • B32B5/22—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts characterised by the presence of two or more layers which are next to each other and are fibrous, filamentary, formed of particles or foamed
    • B32B5/24—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts characterised by the presence of two or more layers which are next to each other and are fibrous, filamentary, formed of particles or foamed one layer being a fibrous or filamentary layer
    • B32B5/26—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts characterised by the presence of two or more layers which are next to each other and are fibrous, filamentary, formed of particles or foamed one layer being a fibrous or filamentary layer another layer next to it also being fibrous or filamentary
    • 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
    • B32B2250/02—2 layers
    • 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
    • B32B2250/03—3 layers
    • 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
    • B32B2262/02—Synthetic macromolecular 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
    • B32B2270/00—Resin or rubber layer containing a blend of at least two different polymers
    • 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
    • B32B2274/00—Thermoplastic elastomer material
    • 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
    • B32B2307/50—Properties of the layers or laminate having particular mechanical properties
    • B32B2307/54—Yield strength; Tensile strength
    • 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
    • B32B2307/714—Inert, i.e. inert to chemical degradation, corrosion
    • 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
    • B32B2555/02—Diapers or napkins

Definitions

  • the present invention describes an elastic, laminar composite material (laminate) and method for its production.
  • Nonwovens also frequently referred to in English as “non woven fabrics” or “nonwovens”, see Ullmanns Enzyklopadie der ischen Chemie, 3rd edition, volume 17, page 287ff.
  • composite materials of elastomers with nonwovens various applications in the art, especially in the field of manufacturing sanitary, personal care and hygiene articles.
  • the fleece provides a pleasant tactile behavior, in particular in the case of articles which are in contact with the skin surface of the wearer for a prolonged period of time, while further elastomers bonded to the fleece - often a film of a suitable elastomeric polymer material - other desirable properties, such as increased mechanical strength combined with flexibility and impermeability to aqueous fluids, contribute to the properties of the composite.
  • a widespread problem in this context is the fact that the corresponding materials in use often come into contact with personal care products which contain not only an aqueous but also an oily phase (care creams and emulsions) or even completely based on an oily carrier base ( body oils).
  • personal care products which contain not only an aqueous but also an oily phase (care creams and emulsions) or even completely based on an oily carrier base ( body oils).
  • those components of the composite material which consist of elastomeric polymer materials, exposed to an additional burden, because it is known that the resistance to oily liquids in various polymers formed very differently.
  • Oily liquids can diffuse into such a polymer material on the one hand and adversely affect, for example, its mechanical properties merely by their presence; on the other hand are also interactions of oily ones Liquids with other ingredients (such as dyes, fillers, plasticizers, etc.) of the polymer materials - where such are present - can not be ruled out.
  • the product consisting of the composite material is destroyed or loses its favorable properties. For example, reduced tear strength leads to pitting in the polymeric materials, thereby losing the composite material overall its barrier properties to aqueous fluids.
  • WO 2008/038168 discloses a corresponding composite material comprising an elastic film containing a semi-crystalline, propylene-based polymer having a density equal to or less than 0.88 g / cm 3 .
  • the oil resistance results here from the chemical nature of the elastic film.
  • EP 3 187 333 A describes an oil-resistant laminate having two outer nonwoven layers and one central elastomer layer, wherein the elastomer layer itself consists of at least two layers, wherein at least one layer represents an olefin-based elastomer which is responsible for the oil resistance is.
  • the present invention provides an oil-resistant, sheet-formed composite consisting of a middle layer and at least one above and / or below arranged outer layer or outer layers, wherein the outer layers of materials selected from nonwoven fabrics ("non-woven fabrics"), and not are attached by means of a separate adhesive to the central layer, wherein the central layer has a single-layer structure, and wherein the central layer consists of a polymer mixture containing at least one thermoplastic elastomer from the group of styrene / isoprene / styrene triblock copolymers (SIS) and further comprising at least one polymer selected from the group of olefinic polymers, the olefinic polymers being selected from the group of polyethylenes and polypropylenes and copolymers of ethylene and propylene and thermoplastic elastomeric polyolefins (TPOs), and Polymer mixture of the middle layer contains no additives of plasticizer (s), in particular of mineral oils.
  • plasticizer s
  • the olefinic polymers of the middle layer polymer blend are selected from the group of polyethylenes prepared by metallocene catalysis and polypropylenes and copolymers of ethylene and propylene.
  • the olefinic polymer of the middle layer polymer blend is a polypropylene or a copolymer of ethylene and propylene.
  • the polymer blend of the middle layer contains no further polymeric constituents besides the SIS triblock copolymers and the olefinic polymers as mentioned above.
  • non-polymeric adjuvants such as fillers, processing aids, waxes, pigments and the like may be present.
  • the polymer mixture of the middle layer consists of a SIS triblock copolymer, an olefinic polymer, and optionally one or more of said auxiliaries.
  • the material for the outer layers is selected from nonwovens which have been bonded by means of water-jet bonding (also known as “water-jet bonding", “water entanglement” or “spun lace”).
  • the material for the outer layers is selected from single-layer nonwovens.
  • the material for the outer layers is selected from the group of monolayer nonwovens, for the production of a fiber material has been selected, which consists of a uniform fiber type.
  • the material for the middle layer is selected from the group of monolayer nonwovens, for the production of which a fiber material has been selected which consists of a mixture of different fiber types.
  • the central layer has a thickness determined by measurement on the microscope of 100 micrometers or less, or in the range between 20 and 100 micrometers, or in the range between 20 and 70 micrometers.
  • the SIS triblock copolymer is characterized by including less than 10% by weight or less than 1% by weight of diblock ingredients.
  • the composite material consists of two outer layers, which are connected to the middle layer, wherein an outer layer above and a further outer layer are arranged below the middle layer.
  • the composite material has an elastic capacity, measured by the test method given below, of more than 9 N / 100 mm. In a further embodiment, the composite material has an elastic capacity of more than 10 N / 100 mm, or more than 1 1 N / 100 mm.
  • the present invention relates to a sheet-like composite (laminate), consisting of a middle layer and at least one above and / or below outer layer or outer layers, wherein the outer layer (s) of materials selected from nonwovens ("Non -woven fabrics "), and are not attached to the central layer by means of a separate adhesive, wherein the central layer has a single-layer structure, and wherein the static shear strength of a bond between an adhesive adhesive tape and the nonwoven layer of the outer layer at a connection age of fourteen days at 50 ° C more than tenfold, or more than twelvefold increases.
  • this composite has an elastic capacity, measured by the test method given below, of more than 9 N / 100 mm.
  • the composite material has an elastic capacity of more than 10 N / 100 mm, or more than 1 1 N / 100 mm.
  • this composite is oil resistant.
  • the oil resistance is determined according to the method given in this specification, wherein the composite in this test has no hole formation within a period of three hours, or four hours, or six hours.
  • the middle layer of the oil-resistant composite material has the compositions described above.
  • the invention further provides a process for the production of a composite material according to the invention, which is characterized in that the middle layer is applied by extrusion extrusion onto or between the outer layer (s).
  • the falling extrusion film between two outer layers is first brought together in a nip.
  • the outer layers can be arranged downstream in a connection unit, which is arranged immediately behind the extrusion unit, with the still plastic film by light pressing together be connected over the entire surface.
  • the pressing can also take place in a separate step, while the elastic film is in a plastic state.
  • the composite material can be partially or fully activated by pre-stretching by conventional methods, such as ring rolling or non-contact stretching by means of a tenter or the like.
  • a composite material can achieve increased resistance to oily liquids (oil resistance) in that the middle layer consists of a polymer mixture which comprises at least one thermoplastic elastomer from the group of styrene / isoprene / styrene triblock copolymers (SIS). and further comprising at least one polymer selected from the group of olefinic polymers, wherein the olefinic polymers are selected from the group of polyethylenes and polypropylenes and copolymers of ethylene and propylene and thermoplastic elastomeric polyolefins (TPOs), and wherein the polymer blend of the middle layer no Additives of plasticizers, in particular of mineral oils.
  • SIS thermoplastic elastomer from the group of styrene / isoprene / styrene triblock copolymers
  • TPOs thermoplastic elastomeric polyolefins
  • SIS triblock copolymer containing less than 10% by weight, or less than 1% by weight of diblock constituents can be used, this level of diblock constituents being determined by methods known in the art (such as gel permeation chromatography) can be determined.
  • Plasticizers or so-called “plasticizers” serve to make materials softer and more flexible. All softening substances used in the state of the art for this purpose and known to the person skilled in the art can be understood by the term “plasticizer” within the meaning of this description.
  • poly-alpha olefins e.g., amorphous polyalphaolefins
  • (functionalized) oligomers such as oligobutadiene, isoprenes, liquid nitrile rubbers, liquid terpene resins, vegetable and animal oils and fats, ester plasticizers such as e.g. Phthalates, adipates, mellitates, phosphorus esters or functionalized acrylates.
  • the group of plasticizers also includes mineral oils which may be paraffinic, aromatic or naphthenic in nature.
  • mineral oils which may be paraffinic, aromatic or naphthenic in nature.
  • a subspecies of these mineral oils are referred to as paraffin oils or white oils (for example Catenex S or T from Shell).
  • white oils for example Catenex S or T from Shell.
  • Part of these are technical white oils which are hydrogenated little or only once and may still contain traces of aromatic hydrocarbon compounds (e.g., Flavex from Shell).
  • White oils are highly purified, ie multi-refined paraffin oils without residues such as aromatic hydrocarbons and sulfur compounds (eg Risella X or Ondina X from Shell). White oils are therefore preferred in pro- used, which must have high levels of purity without contamination by harmful substances such as aromatic hydrocarbons, etc., such as in the cosmetics or hygiene industry.
  • plasticizer-containing (and especially mineral oil-containing) middle layers in the composite materials a diffusion of the plasticizer into the adhesive adhesive layer of the adhesive tape takes place, which may adversely alter the adhesive properties of the adhesive. In the composite materials according to the invention such diffusion can not take place since no plasticizer is present.
  • the composite material is characterized in that the static shear strength of a corresponding bond between an adhesive adhesive tape and the nonwoven layer at a compound aging time of fourteen days at 50 ° C, more than ten times as described in the test described below, or more than twelvefold increases.
  • nonwoven fabrics for use within the invention are basically all nonwovens in question, which can be processed by means of the manufacturing method of the invention (extrusion lamination) with the materials of the invention the middle layer.
  • nonwoven fabrics and processes for their preparation are known in the prior art (see Ullmanns Enzyklopadie der ischen Chemie, 3rd Edition, Volume 17, page 287ff, see also 5th edition, volume A17, chapter “Nonwoven Fabrics", pages 565 -587).
  • a textile fiber material for the production of nonwovens for use in the composite materials according to the invention are in principle all fiber materials in question, which can be processed by means of the known manufacturing processes to nonwovens, ie to a scrim of staple fibers or continuous fibers. Exceptions to this are only mineral fibers and glass fibers. It can be both natural and semi-synthetic or fully synthetic fibers be used. Likewise, uniform fiber materials as well as mixtures of different fiber materials can be used. Suitable fiber materials and the criteria for their use are familiar to the person skilled in the art from his general knowledge (see Ullmann, loc. Cit.).
  • suitable fiber materials are fully synthetic fibers, such as polyethylene, polyethylene terephthalate, polypropylene, polyester, viscose, polyamide, cotton, or wool fibers.
  • the fibers are polypropylene.
  • two-component fibers are also known which can impart special properties to the resulting nonwoven.
  • a subset of these fibers are the bicomponent fibers of two synthetic polymers, such as polyester-polyamide, polyester-polypropylene, nylon-6-polyamide 6.6, and the like.
  • two-component fibers can already be modified during manufacture so that the two components can be found in precisely defined spatial sections of the fibers (e.g., as a core and shell, as segments, and the like). All such embodiments are basically included in the nonwoven fabrics for the production of the composite materials according to the invention.
  • Nonwovens may also be made by single, or multi-layered processes using known prior art techniques, that is, the fibrous material may be selected differently across the cross section of the nonwoven fabric. Both single-layer and multi-layer nonwovens are included for the production of the composite materials according to the invention.
  • the nonwoven webs are monolayer nonwoven webs, that is, the type and composition of the fibers do not change across the cross section of the backsheet.
  • nonwoven fabrics various methods can be used to achieve bonding of the fibers with one another or with the carrier material. Mechanical, adhesive and thermal processes are used. In principle, all of these processes are suitable for the production of nonwovens for use in the composites of the invention.
  • the nonwovens are selected from the group of nonwoven fabrics bound by means of water jet bonding (also known as “water-jet bonding", “water entanglement” or “spunlace”), which consist of a batt, ie a staple fiber netting , "Carded fleece” or continuous fibers exist ..
  • water jet bonding also known as "water-jet bonding", “water entanglement” or “spunlace”
  • a batt ie a staple fiber netting
  • Carded fleece or continuous fibers exist .
  • This manufacturing process is characterized Another in that it is particularly suitable to obtain nonwovens with predefined patterns (eg hole or screen pattern) depending on the number and arrangement of the water jet nozzles.
  • the fibers are swirled together by the penetrating water jets in the scrim.
  • Composite materials according to the invention can be produced by the process known in the art of extrusion lamination, wherein the polymer mixture of the middle layer is introduced as a hot, liquid film on or between the nonwoven layer (s), wherein on cooling between the middle layer and the nonwoven layers immediately gives a direct connection.
  • the properties of the composite materials according to the invention are determined by means of the following test methods.
  • a square test section of the 70 by 70 mm composite material is clamped on each of two opposite sides into a metal rail and stretched by 100% vertical tension, i.e., 140 mm in length.
  • a drop of the test liquid with 0.030 g is applied centrally by means of a dropper pipette. Over a period of three hours, the test section is repeatedly visually inspected. If no mechanical changes (holes, cracks and the like) are detected at the point of application or around the point of application after three hours, the material shall be considered to be oil resistant as defined herein.
  • oils commonly used in skin care products are almond oil (having CAS # 90320-37-9, a relative density of 0.916 (20 ° C), an acid number of ⁇ 1.0 mg KOH / g, and a peroxide value ⁇ 5) and paraffin oil (from the company VWR Chemicals with Ref No. 301440ZK). Oil resistance to either oil is sufficient to define resistance in the sense of this specification.
  • a test section of the 130 mm ("original width") and 90 mm long composite material is clamped (cross machine direction) in a tractor (clamp spacing 70 mm) and subjected to the following stress relaxation cycle: 1. Bias biased with a force of 0, 1 N using a tensile speed of 150 mm / min.
  • Load 1 Elongation from 0% to 100% with a pull speed of 500 mm / min.
  • Relief 1 elongation 100% to 0% with a return speed of 150 mm / min.
  • Load 2 Elongation from 0% to 100% with a pull speed of 500 mm / min.
  • Discharge 2 Elongation 100% to 0% with a return speed of 150 mm / min.
  • Discharge 3 elongation from 100% to 0% with a return speed of 150 mm / min. Measured value: "Voltage 3" in N at 50% elongation.
  • the elastic capacity is calculated according to formula (1):
  • Test material / climate control Sample min. 24h
  • Air conditioning 23 ⁇ 2 ° C and 50 ⁇ 5% relative humidity (RT) 3.
  • RT relative humidity
  • Adhesive adhesive tape The adhesive tape used in this test (CP 1 M 50 from Lohmannkoester) consists of a 60 g / m 2 PP spunbonded nonwoven which is coated with a solvent-free, UV-crosslinkable silicone and one on the opposite side Side applied HMPSA (pressure sensitive hotmelt) with a coating weight of 50 g / m 2 and a processing temperature of 180 ° C, with a viscosity at 180 ° C of 32850 mPas and a Quickstick on steel of 27 N / 25 mm (test method described in the appendix).
  • CP 1 M 50 from Lohmannkoester consists of a 60 g / m 2 PP spunbonded nonwoven which is coated with a solvent-free, UV-crosslinkable silicone and one on the opposite side Side applied HMPSA (pressure sensitive hotmelt) with a coating weight of 50 g / m 2 and a processing temperature of 180 ° C, with a viscosity at 180 °
  • Test specimen width of adhesion adhesive tape (used here: Windeltape CP 1 M 50 from Lohmann-koester): 25 mm
  • Test specimen width of composite material e.g., diaper ear material (e.g., ESP): 60mm (mark well if deviated)
  • Loading direction transverse to the machine direction of the composite material
  • the composite material eg diaper ear material
  • the adhesive adhesive tape eg diaper tape
  • silicone paper for cutting and cut across the direction of travel. The cut must be clean and straight.
  • the adhesive adhesive tape is immediately laminated to one end of the composite. The overlapping area is 16 mm c 25 mm. Then the specimen is rolled over with the rollover device.
  • the non-laminated part of the adhesive tape is perforated in the middle and secured with clamps.
  • At the other end of the composite material is reinforced with a 14mm wide coated Velcro both sides and secured with brackets. 6. Dwell time before tests
  • the shear strength is determined for non-aged samples without holding a waiting time. For the aging step, they are clamped between two Pertinax discs (100 mm x 260 mm x 8 mm) and stored for the period of time intended for aging at elevated temperature in the oven with 2 x 5 kg weight load.
  • the samples in this test are aged for 14 days at 50 ° C.
  • the finished specimens are now hung by means of a clamp, which has at least the width of the specimen in the shearing furnace and loaded with a weight.
  • the load is transverse to the direction of the composite material. It is important that this step be carried out quickly, otherwise the shear furnace will lose too much heat (temperature loss can lead to higher shear values).
  • the time is recorded, which elapses from attaching the weight to dropping the test specimen.
  • Mean value x from number of measured values n with standard deviation s.
  • the values for aged and unaged samples are compared and a factor is determined which expresses the change in shear strength after aging.
  • Air-conditioning 23 ⁇ 2 ° C and 50 ⁇ 5% relative humidity RT 2.
  • Equipment and chemicals
  • Trigger angle 90 °
  • Terminal distance 1 10 mm (upper terminal to test plate)
  • the adhesive tape is cut out in a width of 25 mm, along the running direction, 250 mm long. If the tape is without backing paper, it should be glued to silicone paper before cutting. The cut must be clean and straight (do not store on silicone paper!).
  • the instant adhesive force is determined without holding a waiting time.
  • the cover is removed, the two ends are clamped in such a way in the upper clamp of the testing machine, so that a loop is formed (the ends of the tape are covered in the area of the terminals with paper).
  • test plate width is 50mm. If the tape does not cover the test plate over the full width, the clamp spacing must be reduced.
  • the material of the middle layer consists of:
  • the material of the middle layer consists of:
  • Example 3 (Comparative Example): Composite No. # 129
  • the material of the middle layer consists of:
  • test liquids which contained, in addition to the test oils mentioned, the following base oils (partly in the form of oil mixtures): rapeseed oil, palm kernel or coconut oil, avocado oil, sunflower oil, olive oil, shea butter, and / or marigold oil.
  • Example 6 Test for static shear capability of a compound of the composite with an adhesive adhesive tape
  • the composites of Examples 1-3 are tested for elastic capacity according to the test described above.
  • Adhesion tape used was Windeltape CP 1 M 50 from Lohmann-koester. The results are shown in the following Table 3.
  • Table 3 Results of the test for the statistical shear strength of a bonded joint of the composite with an adhesive adhesive tape.
  • the failure picture differs as follows:
  • the composite material # 129 prevents an intimate connection of the adhesive of the tape with the composite material over a certain storage time. (There is an adhesion break). The static shear strength only increases by about 3.5 times.
  • the oil components are to be found in the formulation of the polymer blend of the composite # 129 as the cause. There is a migration of the oil to the adhesive surface instead.

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  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Laminated Bodies (AREA)

Abstract

La présente invention concerne un matériau composite élastique plat (stratifié) et son procédé de fabrication.
PCT/EP2019/055058 2018-02-28 2019-02-28 Materiau composite Ceased WO2019166585A1 (fr)

Applications Claiming Priority (2)

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DE102018104526.3 2018-02-28
DE102018104526.3A DE102018104526B4 (de) 2018-02-28 2018-02-28 Verbundwerkstoff

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WO2019166585A1 true WO2019166585A1 (fr) 2019-09-06

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Citations (6)

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US5514470A (en) * 1988-09-23 1996-05-07 Kimberly-Clark Corporation Composite elastic necked-bonded material
WO2004060665A1 (fr) 2002-12-23 2004-07-22 Kimberly-Clark Worldwide, Inc. Lamines elastiques resistants a l'huile
WO2008038168A2 (fr) 2006-09-27 2008-04-03 Kimberly-Clark Worldwide, Inc. Composite élastique doté de propriétés barrière
US20090325447A1 (en) * 2008-06-30 2009-12-31 James Austin Elastic Composite Formed from Multiple Laminate Structures
US20120088423A1 (en) * 2009-06-30 2012-04-12 Zeon Corporation Composition for stretchable film
EP3187333A1 (fr) 2014-08-26 2017-07-05 Nitto Denko Corporation Stratifié extensible, et article contenant celui-ci

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Publication number Priority date Publication date Assignee Title
US20070142801A1 (en) 2005-12-15 2007-06-21 Peiguang Zhou Oil-resistant elastic attachment adhesive and laminates containing it
ES2592530T3 (es) 2011-06-17 2016-11-30 Fiberweb, Llc Artículo de múltiples capas permeable al vapor, sustancialmente impermeable al agua
US9765459B2 (en) 2011-06-24 2017-09-19 Fiberweb, Llc Vapor-permeable, substantially water-impermeable multilayer article

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Publication number Priority date Publication date Assignee Title
US5514470A (en) * 1988-09-23 1996-05-07 Kimberly-Clark Corporation Composite elastic necked-bonded material
WO2004060665A1 (fr) 2002-12-23 2004-07-22 Kimberly-Clark Worldwide, Inc. Lamines elastiques resistants a l'huile
WO2008038168A2 (fr) 2006-09-27 2008-04-03 Kimberly-Clark Worldwide, Inc. Composite élastique doté de propriétés barrière
US20090325447A1 (en) * 2008-06-30 2009-12-31 James Austin Elastic Composite Formed from Multiple Laminate Structures
US20120088423A1 (en) * 2009-06-30 2012-04-12 Zeon Corporation Composition for stretchable film
EP3187333A1 (fr) 2014-08-26 2017-07-05 Nitto Denko Corporation Stratifié extensible, et article contenant celui-ci

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Title
"Nonwoven Fabrics", vol. A17, pages: 565 - 587
"Ullmanns Enzyklopädie der technischen Chemie", vol. 17, pages: 287ff

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DE102018104526A1 (de) 2019-08-29

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