EP3699345A1 - Procédé de fabrication d'un non-tissé et non-tissé fabriqué selon ledit procédé - Google Patents

Procédé de fabrication d'un non-tissé et non-tissé fabriqué selon ledit procédé Download PDF

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Publication number
EP3699345A1
EP3699345A1 EP19382116.2A EP19382116A EP3699345A1 EP 3699345 A1 EP3699345 A1 EP 3699345A1 EP 19382116 A EP19382116 A EP 19382116A EP 3699345 A1 EP3699345 A1 EP 3699345A1
Authority
EP
European Patent Office
Prior art keywords
nonwoven fabric
fibers
manufacturing
web
nonwoven
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.)
Withdrawn
Application number
EP19382116.2A
Other languages
German (de)
English (en)
Inventor
Jesus Maria ETAYO SANCHO
Sergio ROSALES CALDERON
Sebastien Laurent MONGES
Andrés Rodríguez Rodríguez
Gustavo AGUILERA COBOS
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.)
Bc Nonwovens SL
Original Assignee
Bc Nonwovens SL
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 Bc Nonwovens SL filed Critical Bc Nonwovens SL
Priority to EP19382116.2A priority Critical patent/EP3699345A1/fr
Publication of EP3699345A1 publication Critical patent/EP3699345A1/fr
Withdrawn legal-status Critical Current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
    • 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
    • D04H1/44—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 the fleeces or layers being consolidated by mechanical means, e.g. by rolling
    • D04H1/46—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 the fleeces or layers being consolidated by mechanical means, e.g. by rolling by needling or like operations to cause entanglement of fibres
    • D04H1/48—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 the fleeces or layers being consolidated by mechanical means, e.g. by rolling by needling or like operations to cause entanglement of fibres in combination with at least one other method of consolidation
    • D04H1/49—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 the fleeces or layers being consolidated by mechanical means, e.g. by rolling by needling or like operations to cause entanglement of fibres in combination with at least one other method of consolidation entanglement by fluid jet in combination with another consolidation means
    • 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
    • D04H1/54—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 by welding together the fibres, e.g. by partially melting or dissolving
    • D04H1/558—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 by welding together the fibres, e.g. by partially melting or dissolving in combination with mechanical or physical treatments other than embossing

Definitions

  • the present invention refers to a method for manufacturing a nonwoven fabric and to a nonwoven fabric manufactured by said method.
  • the raw material to produce nonwovens can be continuous yarn, staple fibers or pulp.
  • the web formation method consists of carding the fibers and a web bonding step that can be carried out mechanically by hydroentangling (the fibers are sewed by high pressure water jet spray) or needle-punching (the fibers are sewed by needles); chemically (by adding a polymeric bonding agent in order to bind the fibers); or thermally (the fibers are bonded under heating with air or calendering).
  • the main applications of the nonwoven fabrics are in the hygiene, medical, industrial and geotextiles markets.
  • the nonwoven fabric spunlace manufacturing method combines the staple fibers carding and hydroentangling steps.
  • the nonwoven fabrics thickness or caliper is measured according to the EDANA Test Method NWSP 120.6.R0 (15) and it is expressed in mm.
  • the thickness of a standard spunlace product is higher than 0,20 mm.
  • the current nonwoven manufacturing methods to achieve nonwoven fabrics thinner than 0,20mm are the spunbond, meltblown and calender bonded technologies.
  • the spundbonded and meltblown nonwoven fabrics are made of filaments (instead of staple fibers), which results in very rigid fabrics that are not adaptable to irregular surfaces.
  • the continuous yarn containing nonwoven products present low capillarity, which results in a low liquid absorption and, consequently, poor compatibility with liquids, such as water, but also liquid resins or waxes.
  • the calender bonded products present good adaptability, since they are made of staple fibers, but the calender bonding production costs are high, due to the low speed needed to fix the fibers by heat transfer.
  • the objective of the following invention is to provide a nonwoven fabric produced by carding and hydroentangling and, subsequently, calendering, so the resulting nonwoven fabric presents a low caliper.
  • this nonwoven fabric resulting from the method is adaptable to irregular surfaces.
  • the cost of the method according to the present invention is low, since the fibers are water jet bonded.
  • the present invention refers to a method for manufacturing a nonwoven fabric, comprising a fiber carding step and a fiber hydroentangling step for forming a web, wherein the method also comprises a calendering step of said web.
  • said calendering step is carried out at a temperature from 60 °C and 280 °C and applying a pressure from 40 N/mm and 300 N/mm.
  • said fibers are staple fibers, being natural fibers, synthetic fibers or a mixture of natural and synthetic fibers.
  • the present invention refers to a nonwoven fabric manufactured by the method described previously, the nonwoven fabric comprising fibers forming substantially parallel stripes.
  • said stripes have a width from 0.05 mm and 1.0 mm.
  • Said fibers are natural fibers, synthetic fibers, or a mixture of natural and synthetic fibers.
  • the resulting nonwoven fabric according to the present invention manufactured by the method according to the present invention presents a low caliper, e.g. lower than 0.20 mm.
  • this nonwoven fabric resulting from the method according to the present invention is adaptable to irregular surfaces.
  • the cost of the method according to the present invention is low, since the fibers are water jet bonded.
  • Figure 1 is a diagrammatical plan view of the nonwoven fabric according to the present invention, showing the substantially parallel stripes.
  • the present invention refers to a nonwoven fabric resulting of spunlacing (carding and hydroentangling) a plurality of staple fibers forming a web and, subsequently, calendering said web.
  • the calendering step is not carried out to bond the fibers, but to reduce the fabric thickness.
  • the spunlace nonwoven fabric obtained presents a significantly thinner caliper than the standard spunlace materials.
  • the spunlace nonwoven obtained with the method according to the present invention preserves the good adaptability of the fabric to irregular surfaces.
  • the nonwoven fabric of the invention shows a uniform bonding, which can be appreciated by visual analysis under an optical microscope.
  • the water jet uniform boding results in 0.05 - 1.0 mm wide parallel stripes in machine direction separated between 0.5 - 1.5 mm, which differentiate a hydroentangled nonwoven fabric from other technologies, such as calender bonded, thermal bonded or chemical bonded.
  • the fibers source can be natural (such as Viscose, Lyocell or PLA), synthetic (like PET, PP, PE or bi-component fibers) or a blend of natural source fibers and synthetic fibers.
  • spunlace nonwoven fabric of the invention presents a basis weight between 25 and 90 g/m 2 .
  • the nonwoven manufacturing method according to the present invention comprises the following steps:
  • the spunlace nonwoven manufacturing method comprises an additional calendering final treatment of the hydroentangled web, which differentiates it from the standard spunlace production method.
  • the method of the invention is a low-cost method, since the fibers are water jet bonded.
  • This additional calendering step of the spunlaced web is carried out preferably at a temperature between 60 and 280 °C and a nip pressure between 40 N/mm and 300 N/mm.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Textile Engineering (AREA)
  • Nonwoven Fabrics (AREA)
EP19382116.2A 2019-02-19 2019-02-19 Procédé de fabrication d'un non-tissé et non-tissé fabriqué selon ledit procédé Withdrawn EP3699345A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP19382116.2A EP3699345A1 (fr) 2019-02-19 2019-02-19 Procédé de fabrication d'un non-tissé et non-tissé fabriqué selon ledit procédé

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP19382116.2A EP3699345A1 (fr) 2019-02-19 2019-02-19 Procédé de fabrication d'un non-tissé et non-tissé fabriqué selon ledit procédé

Publications (1)

Publication Number Publication Date
EP3699345A1 true EP3699345A1 (fr) 2020-08-26

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
EP19382116.2A Withdrawn EP3699345A1 (fr) 2019-02-19 2019-02-19 Procédé de fabrication d'un non-tissé et non-tissé fabriqué selon ledit procédé

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EP (1) EP3699345A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113737389A (zh) * 2021-09-29 2021-12-03 礼德滤材科技(苏州)有限责任公司 一种直接铺网的三梳理水刺无纺布及其制备方法

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20030024092A1 (en) * 2000-02-24 2003-02-06 Vittorio Orlandi Method and device for producing composite nonwovens by means of hydrodynamic needling
WO2006044295A1 (fr) * 2004-10-14 2006-04-27 The Procter & Gamble Company Serviettes non tissees 100 % synthetiques
EP2692924A1 (fr) * 2012-07-31 2014-02-05 Suominen Corporation Non-tissés calandrés
JP2015180789A (ja) * 2008-04-28 2015-10-15 ダイワボウホールディングス株式会社 不織布およびその製造方法、並びに拭き取り材
US20180105965A1 (en) * 2016-10-19 2018-04-19 North Carolina State University Nonwoven fabrics and methods of making and using same

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20030024092A1 (en) * 2000-02-24 2003-02-06 Vittorio Orlandi Method and device for producing composite nonwovens by means of hydrodynamic needling
WO2006044295A1 (fr) * 2004-10-14 2006-04-27 The Procter & Gamble Company Serviettes non tissees 100 % synthetiques
JP2015180789A (ja) * 2008-04-28 2015-10-15 ダイワボウホールディングス株式会社 不織布およびその製造方法、並びに拭き取り材
EP2692924A1 (fr) * 2012-07-31 2014-02-05 Suominen Corporation Non-tissés calandrés
US20180105965A1 (en) * 2016-10-19 2018-04-19 North Carolina State University Nonwoven fabrics and methods of making and using same

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
DATABASE WPI Week 201571, Derwent World Patents Index; AN 2015-61528H, XP002792399 *

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113737389A (zh) * 2021-09-29 2021-12-03 礼德滤材科技(苏州)有限责任公司 一种直接铺网的三梳理水刺无纺布及其制备方法

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