EP1505187B1 - Spinnvlies und Verfahren zur Herstellung eines Spinnvlieses - Google Patents

Spinnvlies und Verfahren zur Herstellung eines Spinnvlieses Download PDF

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Publication number
EP1505187B1
EP1505187B1 EP03018108A EP03018108A EP1505187B1 EP 1505187 B1 EP1505187 B1 EP 1505187B1 EP 03018108 A EP03018108 A EP 03018108A EP 03018108 A EP03018108 A EP 03018108A EP 1505187 B1 EP1505187 B1 EP 1505187B1
Authority
EP
European Patent Office
Prior art keywords
filaments
nonwoven fabric
spunbonded
low
melting component
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.)
Revoked
Application number
EP03018108A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP1505187A1 (de
Inventor
Sebastian Sommer
Udo Schomer
Jörg Willinger
Michael Block
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.)
Reifenhaeuser GmbH and Co KG Maschinenenfabrik
Original Assignee
Reifenhaeuser GmbH and Co KG Maschinenenfabrik
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
Family has litigation
First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=33547667&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=EP1505187(B1) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Priority to DE50304289T priority Critical patent/DE50304289D1/de
Priority to ES03018108T priority patent/ES2265079T3/es
Priority to DK03018108T priority patent/DK1505187T3/da
Priority to EP03018108A priority patent/EP1505187B1/de
Priority to AT03018108T priority patent/ATE333528T1/de
Application filed by Reifenhaeuser GmbH and Co KG Maschinenenfabrik filed Critical Reifenhaeuser GmbH and Co KG Maschinenenfabrik
Priority to MYPI20042442A priority patent/MY140892A/en
Priority to CNB2004100696438A priority patent/CN100336956C/zh
Priority to US10/912,740 priority patent/US20050041312A1/en
Publication of EP1505187A1 publication Critical patent/EP1505187A1/de
Publication of EP1505187B1 publication Critical patent/EP1505187B1/de
Application granted granted Critical
Anticipated expiration legal-status Critical
Revoked legal-status Critical Current

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Classifications

    • D—TEXTILES; PAPER
    • D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
    • D04H—MAKING TEXTILE FABRICS, e.g. FROM FIBRES OR FILAMENTARY MATERIAL; FABRICS MADE BY SUCH PROCESSES OR APPARATUS, e.g. FELTS, NON-WOVEN FABRICS; COTTON-WOOL; WADDING ; NON-WOVEN FABRICS FROM STAPLE FIBRES, FILAMENTS OR YARNS, BONDED WITH AT LEAST ONE WEB-LIKE MATERIAL DURING THEIR CONSOLIDATION
    • D04H3/00—Non-woven fabrics formed wholly or mainly of yarns or like filamentary material of substantial length
    • D04H3/08—Non-woven fabrics formed wholly or mainly of yarns or like filamentary material of substantial length characterised by the method of strengthening or consolidating
    • D04H3/14—Non-woven fabrics formed wholly or mainly of yarns or like filamentary material of substantial length characterised by the method of strengthening or consolidating with bonds between thermoplastic yarns or filaments produced by welding
    • D04H3/147—Composite yarns or filaments
    • D—TEXTILES; PAPER
    • D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
    • D01F—CHEMICAL FEATURES IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS; APPARATUS SPECIALLY ADAPTED FOR THE MANUFACTURE OF CARBON FILAMENTS
    • D01F8/00—Conjugated, i.e. bi- or multicomponent, artificial filaments or the like; Manufacture thereof
    • D01F8/04—Conjugated, i.e. bi- or multicomponent, artificial filaments or the like; Manufacture thereof from synthetic polymers
    • D01F8/06—Conjugated, i.e. bi- or multicomponent, artificial filaments or the like; Manufacture thereof from synthetic polymers with at least one polyolefin as constituent
    • 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
    • D04H3/00—Non-woven fabrics formed wholly or mainly of yarns or like filamentary material of substantial length
    • D04H3/005—Synthetic yarns or filaments
    • D04H3/009—Condensation or reaction polymers
    • D04H3/011—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
    • D04H3/00—Non-woven fabrics formed wholly or mainly of yarns or like filamentary material of substantial length
    • D04H3/08—Non-woven fabrics formed wholly or mainly of yarns or like filamentary material of substantial length characterised by the method of strengthening or consolidating
    • D04H3/14—Non-woven fabrics formed wholly or mainly of yarns or like filamentary material of substantial length characterised by the method of strengthening or consolidating with bonds between thermoplastic yarns or filaments produced by welding

Definitions

  • the invention relates to a spunbonded nonwoven made of continuous fibers, wherein the continuous filaments are multi-component filaments, in particular bicomponent filaments. Furthermore, the invention relates to a method for producing such a spunbonded nonwoven.
  • the term continuous fibers and the term filaments theoretically mean infinitely long threads from which the spunbonded fabric is formed. This should be distinguished from staple fibers, which are relatively short threads, which in any case are on average much shorter than the aforementioned filaments.
  • the filaments used according to the invention consist in particular of a thermoplastic or thermoplastics.
  • US Pat. No. 5,425,987 discloses a spunbonded nonwoven made of continuous fibers, these endless fibers being multi-component filaments.
  • the multi-component filaments may have a core-shell structure, wherein the low-melting component may form the shell.
  • nonwovens are to be produced with improved abrasion resistance. Nevertheless, these spunbonded fabrics leave something to be desired with regard to some mechanical properties, in particular with regard to tensile strength and work absorption (maximum tensile strength work).
  • Spunbonded bicomponent filaments are known from WO 00/66821 A.
  • the bicomponent filaments have a side-by-side arrangement.
  • spunbonded nonwovens are to be produced with elastic properties that do not contain thermoplastic elastomers or rubber components.
  • a similar disclosure can also be found in WO 03/027374 A1 and also the spunbonded nonwovens obtainable in terms of their mechanical properties, in particular with regard to the tensile strength, are desired.
  • spunbonded nonwovens From practice, a variety of similar plants and processes for the production of spunbonded nonwovens are known.
  • the known spunbonded nonwovens which consist in particular of monofilaments, leave something to be desired with regard to their mechanical properties, in particular with regard to the tensile strength and the work absorption (maximum tensile force work). This is especially true for spunbonded nonwovens with medium and heavy basis weights from about 30 to 40 g / m 2 . Due to the limited thermal conductivity of the plastics used, it is difficult in the thermal consolidation of these spunbonded nonwovens with higher basis weights to bring sufficient energy input into the center of the spunbonded nonwoven.
  • the invention is the technical problem of increasing the strength or tensile strength of spunbonded nonwovens with higher basis weights from 40 g / m 2 . Furthermore, the invention is the technical problem of specifying a method for producing such a spunbonded nonwoven.
  • the invention teaches a spunbonded nonwoven fabric, wherein the continuous filaments are multi-component filaments, in particular bicomponent filaments with at least one low-melting component on the outer surface, wherein the multicomponent filaments, in particular the bicomponent filaments, have a core-shell structure and wherein the low-melting component forms the shell, which is a spunbond nonwoven thermally consolidated in a calender with an emboss area less than 22% and wherein the spunbonded web has a basis weight of over 50 g / m 2 .
  • Embossing surface of the calender means the effective surface, which produces the connection points in the spunbonded fabric or between the filaments during the thermal consolidation. It is therefore the area that acts directly on the filaments.
  • the embossing surface is formed by engraving points of the gravure roll of the calender. It is within the scope of the invention that a gravure roll / smooth roll pair is used as the calender. It is within the scope of the invention that the spunbonded in a calender with a Stamping surface of at least 10%, preferably at least 12% thermally consolidated.
  • filaments with titers between 1.8-2.5 denier are expediently used. But it can also be used finer filaments. Basically, it is therefore within the scope of the invention to use filaments with titers between 0.8 to 2.5 denier.
  • the filaments used according to the invention consist of a low-melting component which is arranged on the outer surface of the filament and of a higher-melting component which forms the core of the filament.
  • the multicomponent filaments used according to the invention in particular bicomponent filaments, have a core-shell structure and the low-melting component forms the shell.
  • the at least one higher-melting component forms the core of the filament. It is within the scope of the invention that in the case of a filament having a core-sheath structure, the core is completely surrounded by the sheath of the low-melting component. Moreover, it is within the scope of the invention that both the core and the jacket extend over the entire length of a filament.
  • the low-melting component has a melting point which is at least 5 ° C, preferably at least 10 ° C and very preferably at least 15 ° C lower than the melting point of the higher melting component.
  • the melting point of the low-melting component is at least 20 ° C lower than the melting point of the higher melting component.
  • the melting point of the low-melting component is 120 ° C and higher.
  • the low-melting component is a polyolefin or a mixture of polyolefins and their copolymers.
  • the low-melting component is polyethylene and the higher-melting component is polypropylene.
  • polyethylene thus forms the jacket and polypropylene the core of the filament.
  • the low-melting component is a polypropylene copolymer whose softening point or melting point is lower than that of pure polypropylene.
  • the higher melting component is expediently made of polypropylene.
  • a core-shell structure is realized wherein the polypropylene copolymer forms the shell and the polypropylene forms the core of the filament.
  • the polypropylene copolymer is preferably a polypropylene-polyethylene copolymer. This copolymer can be heterophasic.
  • heterophasic polypropylene-polyethylene copolymers which preferably contain polyethylene contents of from 2 to 6% by weight.
  • a polypropylene terpolymer can also be used as the low-melting component, which is preferably a polypropylene-polyethylene-polybutylene terpolymer.
  • the polyethylene or polypropylene forms the shell and the polyester forms the core.
  • the proportion of the low-melting component in the filaments 10 to 40 wt .-%, preferably 15 to 35 wt .-% is.
  • the weight percentages are in each case based on the entire filament.
  • the proportion of the higher-melting component is preferably 90 to 60% by weight, preferably 85 to 65% by weight.
  • the spunbonded nonwoven fabric according to the invention is expediently a spunbonded nonwoven thermally consolidated in a calender with an embossing area of less than 20%.
  • the spunbonded web has a basis weight of over 60g / m 2 .
  • the invention further teaches a method for producing a spunbonded nonwoven fabric, wherein a nonwoven web is formed from continuous fibers formed as multicomponent filaments, in particular as bicomponent filaments, which filaments have a low-melting component on their outer surface, wherein the multicomponent filaments, in particular the bicomponent filaments, have a core-shell structure and wherein the low-melting component forms the shell, wherein the nonwoven web is thermally solidified in a calender with an emboss area less than 22% and wherein a spunbonded fabric having a basis weight of over 50 g / m 2 is produced.
  • connection points are created between the filaments.
  • Connecting points in the context of the invention means the areas of the filaments which are softened due to the action of the calender and at which connection points with adjacent filaments are formed.
  • only the outer regions of a filament are softened at the connection points with respect to the cross section of the filament and a core region is not softened or remains erweichungsok. This possibility is particularly useful when the melting point difference with respect to the low-melting and the higher-melting component is relatively high, that is, for example, in a polyolefin as a low-melting component and a polyester as a higher-melting component.
  • only the outer surface or the jacket of the low-melting component is at least partially softened or melted and the core of the higher-melting component remains completely free of softening. It is also within the scope of the invention that the outer surface or the jacket of the low-melting component is softened or melted and that only surface regions of the core are softened or melted and the core otherwise remains substantially free of softening.
  • a very preferred embodiment of the invention is characterized in that the thermal solidification is carried out with the proviso that the higher-melting component in the region of the connection points or at the connection points remains completely or substantially free of softening.
  • Substantially free of softening means preferably that 75 to 90% by weight of the higher-melting component remain free of softening in relation to the cross section of the filament at the connection point.
  • the invention is based on the finding that due to the inventive design of the spunbonded fabric or the filaments of the spunbonded fabric in the thermal consolidation of the energy input in the middle of the nonwoven sufficient to connect the filaments on the low-melting outer material. On the other hand, a disadvantageous heat deterioration of the remaining filament areas does not take place.
  • the spunbonded nonwoven according to the invention is distinguished by a surprisingly high strength or tensile strength. Spun nonwovens with high basis weights of more than 50 g / m 2 and in particular more than 60 g / m 2 can be produced which have such a surprisingly high strength or tensile strength exhibit. Specific longitudinal strengths higher than 3 are achieved at these high basis weights.
  • a spunbonded bicomponent filament was made with the filaments having a standard titer (1.8 to 2 denier).
  • the bicomponent filaments had a core-shell structure, namely a polypropylene core and a polypropylene copolymer sheath whose melting point was reduced in core to polypropylene.
  • the polypropylene copolymer is a polypropylene-polyethylene heterophasic copolymer.
  • the proportion of the core component was 80 wt .-% and the proportion of the shell component 20 wt .-%.
  • the produced spunbonded fabric had a basis weight of 60 g / m 2 .
  • the thermal consolidation was carried out according to the invention with a stamping calender. A longitudinal strength of 220 N / 5 cm was achieved and a specific longitudinal strength of 3.6.
  • a spunbonded bicomponent filament of standard titer was prepared.
  • the bicomponent filaments had a core-shell structure.
  • the core component was polypropylene and the sheath component was polyethylene.
  • the proportion of the core component was 70 wt .-% and the proportion of the shell component was 30 wt .-%.
  • the spunbonded fabric had a basis weight of 55 g / m 2 .
  • this spunbonded nonwoven was thermally consolidated according to the invention with a calender. A longitudinal strength of 220 N / 5 cm was achieved and a specific longitudinal strength of 4.
  • a fine fiber non-woven fabric of bicomponent filaments having a denier of 1.1 denier having a core-shell structure was produced.
  • the core was made of polypropylene and the jacket of polyethylene.
  • the proportion of the core component was 70 wt .-% and the proportion of the shell component 30 wt .-%.
  • the fine fiber fleece had a basis weight of 55 g / m 2 .
  • the single FIGURE shows a cross section through a used according to the invention bicomponent filament core-shell structure.
  • the jacket 1, which surrounds the core preferably and in the exemplary embodiment completely, for example, consists of polyethylene or polypropylene copolymer.
  • the core 2 completely surrounded by the jacket 1 may consist of polypropylene in the exemplary embodiment. According to another embodiment, however, this core 2 may also consist of a polyester or of another plastic having a higher softening temperature than the shell component.

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  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • General Chemical & Material Sciences (AREA)
  • Nonwoven Fabrics (AREA)
  • Multicomponent Fibers (AREA)
  • Treatment Of Fiber Materials (AREA)
EP03018108A 2003-08-08 2003-08-08 Spinnvlies und Verfahren zur Herstellung eines Spinnvlieses Revoked EP1505187B1 (de)

Priority Applications (8)

Application Number Priority Date Filing Date Title
ES03018108T ES2265079T3 (es) 2003-08-08 2003-08-08 Material no tejido de hilatura y procedimiento para fabricar un material no tejido de hilatura.
DK03018108T DK1505187T3 (da) 2003-08-08 2003-08-08 Spunbonded fiberstof og fremgangsmåde til fremstilling af et spunbonded fiberstof
EP03018108A EP1505187B1 (de) 2003-08-08 2003-08-08 Spinnvlies und Verfahren zur Herstellung eines Spinnvlieses
AT03018108T ATE333528T1 (de) 2003-08-08 2003-08-08 Spinnvlies und verfahren zur herstellung eines spinnvlieses
DE50304289T DE50304289D1 (de) 2003-08-08 2003-08-08 Spinnvlies und Verfahren zur Herstellung eines Spinnvlieses
MYPI20042442A MY140892A (en) 2003-08-08 2004-06-22 Spunbonded nonwoven fabric and process for making the same
CNB2004100696438A CN100336956C (zh) 2003-08-08 2004-07-15 非织造织物网以及生产非织造织物网的方法
US10/912,740 US20050041312A1 (en) 2003-08-08 2004-07-30 Nonwoven web and method of making same

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP03018108A EP1505187B1 (de) 2003-08-08 2003-08-08 Spinnvlies und Verfahren zur Herstellung eines Spinnvlieses

Publications (2)

Publication Number Publication Date
EP1505187A1 EP1505187A1 (de) 2005-02-09
EP1505187B1 true EP1505187B1 (de) 2006-07-19

Family

ID=33547667

Family Applications (1)

Application Number Title Priority Date Filing Date
EP03018108A Revoked EP1505187B1 (de) 2003-08-08 2003-08-08 Spinnvlies und Verfahren zur Herstellung eines Spinnvlieses

Country Status (8)

Country Link
US (1) US20050041312A1 (zh)
EP (1) EP1505187B1 (zh)
CN (1) CN100336956C (zh)
AT (1) ATE333528T1 (zh)
DE (1) DE50304289D1 (zh)
DK (1) DK1505187T3 (zh)
ES (1) ES2265079T3 (zh)
MY (1) MY140892A (zh)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102007011365B4 (de) * 2007-03-07 2009-02-12 Carl Freudenberg Kg Lage zur Verwendung in einem HEPA-Filterelement sowie Filterelement
DE102007021374B4 (de) * 2007-05-04 2010-06-17 Carl Freudenberg Kg Vliesstoffüberzug mit niedrigem Reibungskoeffizienten für die Frauenhygiene, insbesondere für Tampons, oder für medizinische Zwecke, sowie dessen Verwendung
TWI627321B (zh) * 2012-09-20 2018-06-21 Asahi Kasei Fibers Corp Polypropylene non-woven fabric, manufacturing method thereof and sanitary material
EP3508459A1 (en) 2018-01-09 2019-07-10 OCV Intellectual Capital, LLC Fiber reinforced materials with improved fatigue performance
EP3923889B1 (en) * 2019-02-15 2024-04-03 Essity Hygiene and Health Aktiebolag Absorbent article with embossed surface layer
EP3771761B1 (de) * 2019-07-30 2021-05-19 Reifenhäuser GmbH & Co. KG Maschinenfabrik Spunbond-vliesstoff aus endlosfilamenten und vorrichtung zur erzeugung des spunbond-vliesstoffes
CN113308802A (zh) * 2021-06-03 2021-08-27 四川亿耐特新材料有限公司 一种无纺布成型工艺

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4211816A (en) * 1977-03-11 1980-07-08 Fiber Industries, Inc. Selfbonded nonwoven fabrics
US5405682A (en) * 1992-08-26 1995-04-11 Kimberly Clark Corporation Nonwoven fabric made with multicomponent polymeric strands including a blend of polyolefin and elastomeric thermoplastic material
US5336552A (en) * 1992-08-26 1994-08-09 Kimberly-Clark Corporation Nonwoven fabric made with multicomponent polymeric strands including a blend of polyolefin and ethylene alkyl acrylate copolymer
US5662978A (en) * 1995-09-01 1997-09-02 Kimberly-Clark Worldwide, Inc. Protective cover fabric including nonwovens
JP2002543304A (ja) * 1999-04-30 2002-12-17 キンバリー クラーク ワールドワイド インコーポレイテッド 伸縮性不織材料
US20010019931A1 (en) * 1999-11-29 2001-09-06 Rosaldo Fare Method for making improved sealability polyolefin fibers, the fibers made thereby and non-woven textile materials including the fibers
US20030056883A1 (en) * 2001-09-26 2003-03-27 Vishal Bansal Method for making spunbond nonwoven fabric from multiple component filaments
US7008888B2 (en) * 2003-07-24 2006-03-07 E. I. Du Pont De Nemours And Company Multiple component spunbond web

Also Published As

Publication number Publication date
CN100336956C (zh) 2007-09-12
ATE333528T1 (de) 2006-08-15
US20050041312A1 (en) 2005-02-24
DE50304289D1 (de) 2006-08-31
MY140892A (en) 2010-01-29
CN1580345A (zh) 2005-02-16
DK1505187T3 (da) 2006-10-30
EP1505187A1 (de) 2005-02-09
ES2265079T3 (es) 2007-02-01

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