EP0814190A2 - Non-tissé multicouche imperméable aux liquides et procédé de fabrication du non-tissé - Google Patents

Non-tissé multicouche imperméable aux liquides et procédé de fabrication du non-tissé Download PDF

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Publication number
EP0814190A2
EP0814190A2 EP97110003A EP97110003A EP0814190A2 EP 0814190 A2 EP0814190 A2 EP 0814190A2 EP 97110003 A EP97110003 A EP 97110003A EP 97110003 A EP97110003 A EP 97110003A EP 0814190 A2 EP0814190 A2 EP 0814190A2
Authority
EP
European Patent Office
Prior art keywords
nonwoven material
additive
granules
layers
melt
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Withdrawn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
EP97110003A
Other languages
German (de)
English (en)
Other versions
EP0814190A3 (fr
Inventor
Heinz-Horst Boich
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.)
Corovin GmbH
Original Assignee
Corovin GmbH
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 Corovin GmbH filed Critical Corovin GmbH
Publication of EP0814190A2 publication Critical patent/EP0814190A2/fr
Publication of EP0814190A3 publication Critical patent/EP0814190A3/fr
Withdrawn legal-status Critical Current

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    • 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
    • D04H3/02—Non-woven fabrics formed wholly or mainly of yarns or like filamentary material of substantial length characterised by the method of forming fleeces or layers, e.g. reorientation of yarns or filaments
    • 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
    • D04H3/08—Non-woven fabrics formed wholly or mainly of yarns or like filamentary material of substantial length characterised by the method of strengthening or consolidating
    • D04H3/16—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 filaments produced in association with filament formation, e.g. immediately following extrusion

Definitions

  • the invention relates to a multilayer liquid-tight nonwoven material according to the preamble of claim 1.
  • This is a composite nonwoven which is impermeable to water, solvents, wetting agents, oil and other liquids.
  • Such a nonwoven material is used in many applications to retain liquids because the nonwoven material, because of its hydrophobicity, prevents it from being penetrated by liquids.
  • This disadvantage is e.g. B. can be observed in a roofing membrane made of non-woven material, which is used in the construction of houses for the roofs.
  • the nonwoven material can come into contact with liquids and solvents with which the wood used for the roof is treated, and then the described disadvantage arises that the nonwoven material loses the water resistance at the points where the nonwoven material with the liquid low surface tension is wetted.
  • the covering materials are equipped with such hydrophilizing materials that detach from the fiber composites when body secretions (eg urine) penetrate.
  • body secretions eg urine
  • textile barrier systems e.g. laundry protection of a sanitary napkin, textile diaper outer skin, leakage barriers and other barriers
  • the invention provides in a novel manner that the additives are already contained in the granulate from which the relevant nonwoven layer is produced in a manner known per se. This ensures that the additives are distributed in the fiber cross-section and form a sufficient depot to diffuse to the surface.
  • the nonwoven material according to the invention can therefore also maintain its tightness when it comes into contact with liquids which have a very low surface tension.
  • the additives namely prevent the nonwoven material from being wetted with such liquids.
  • At least one of the layers is designed to be antistatic, so that the multilayer nonwoven material is antistatic overall. If the nonwoven material according to the invention is used for the production of clothing, the comfort when wearing the clothing is increased because static charges of the nonwoven material are prevented.
  • the antistatic design of the new nonwoven material is of particular importance in the invention, because it was previously not known to make a nonwoven material liquid-tight on the one hand and also antistatic on the other hand.
  • the nonwoven material according to the invention is generally repellent and impervious to water, alcohol, wetting agents, solvents, oil and other liquids.
  • the nonwoven material is permeable to air and also permeable to water vapor and antistatic.
  • the nonwoven material consists of a layer made of a melt-blown nonwoven and a carrier layer made of a spunbonded fabric connected to it.
  • the layer of spunbonded fabric is suitable for absorbing compressive deformation forces.
  • the fibers of both layers contain the additives, which reduce the wettability of the fiber surfaces for liquids.
  • the layer of melt-blown nonwoven defines a defined one Capillary structure
  • the spunbonded backing layer which absorbs compressive deformation forces, a change in the capillary structure and the capillary system in the event of compressive deformations, such as can occur when using the nonwoven material, is prevented or that the enlargement of individual pores is prevented is, so that there is an increase in tightness under pressure.
  • the invention also relates to a process for the production of layers formed by spunbonded or melt-blown for a multilayer liquid-impermeable nonwoven material according to the preamble of patent claim 10.
  • the object of the invention is to provide a simple and inexpensive method by means of which multilayer liquid-tight Allow nonwoven materials to be produced in which the fibers or filaments of a layer contain additives which are essentially distributed over the fiber cross section.
  • an additive granulate is first produced which contains the additive known under the trade name "FX 1801", which is available in powder form as fluorocarbon. These additive granules are then mixed with the customary and known pure polymer granules. A melt liquid is then obtained in a known manner from the mixture of the two granules thus obtained, from which the fibers / filaments can be produced in a known manner to form the layers of the nonwoven material.
  • FX 1801 which is available in powder form as fluorocarbon.
  • a powder is first produced from the customary polymer granules, and the polymer, which is then in powder form, is mixed uniformly with the additive, which is likewise in powder form.
  • the same polymer is therefore used for the production of the additive granulate as for the pure polymer granulate.
  • the proportion of the additive in the mixture is advantageously less than 50%.
  • the powder mixture (“batch concentrate") from the additive and the polymer is then melted and extruded and then granulated so that a granulate is then available which is the additive granulate.
  • an additive granulate is first produced in an upstream step, which is then brought together with the usual polymer granulate to generate a melt liquid from the two granules to form the layers of the nonwoven material.
  • the nonwoven material 10 is a composite material, the three layers 12-16 being connected to one another in a manner known per se by thermal bonding at discrete locations.
  • the fibers contain at least one of the layers 12-14, an additive 20 distributed over the fiber cross-section, and the reference number 22 indicates that the additive is also arranged to a small extent on the surface of the fiber 18 due to diffusion .
  • an additive for example, a fluorochemical belonging to the group of oxazolidones or the additive known under the trade name FX 1801 in powder form can be used, by means of which the oligophobia (impermeability to solvents) is achieved.
  • the fiber 18 is preferably formed by polypropylene, to which the additive 20, 22 is added.
  • the additive 20, 22 present in powder form is first mixed uniformly with the polypropylene intended for this purpose, also in powder form - and not as granules - for the production of a spunbonded fabric or melt-blown. A uniform powdery mixture of the additive with polypropylene is thus obtained.
  • This mixture which is in powder form, is then melted, extruded and granulated, so that granules (additive granules) are then available.
  • This additive granulate with the additive 20, 22 is then mixed with a pure and known polypropylene granulate, the proportion of the granulate provided with the additive preferably being about 2%. From this mixed granulate - polypropylene granulate with additive and polypropylene granulate without additive - the layer in question (from spunbonded fabric or melt-blown) is produced in a production process known per se.
  • the multi-layer nonwoven material 10 is made antistatic in order to avoid electrostatic charges.
  • the nonwoven material 10 according to the invention is distinguished by excellent water, solvent, wetting agent and oil-repellent behavior.
  • the use of the additive 20, 22 or the arrangement in the cross section of the fibers 18 leads to a further advantage of the invention.
  • the multi-layer nonwoven material 10 namely has a significantly increased separation resistance, that is to say a reduced delamination behavior compared to multi-layer nonwoven materials not provided with additives in the sense of the invention.
  • the individual layers of fleece are therefore very difficult to separate from one another at their interfaces.
  • the fibers of all three layers 12, 14, 16 have an additive according to the invention.
  • the fibers of the upper spunbond layer 12 are antistatically treated.
  • the entire nonwoven material 10 is therefore not only oligophobic, but also also antistatic.
  • the nonwoven material 10 according to FIG. 3 is formed in two layers and consists of a layer 24 made of melt-blown nonwoven and an associated carrier layer 26 made of a spunbonded nonwoven.
  • the fibers of both layers 24, 26 contain additives that reduce the wettability of the fiber surfaces for liquids.
  • the carrier layer 26 is designed such that it can absorb compressive deformation forces.
  • the layer 24 made of a melt-blown fleece has a defined capillary structure. If 10 forces occur due to the effects of pressure when using the nonwoven material, these pressure-forming forces are absorbed and absorbed by the carrier layer 26, so that a change in the capillary system of the layer 24 made of melt-blown nonwoven or an enlargement of individual pores can be prevented.

Landscapes

  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Nonwoven Fabrics (AREA)
  • Laminated Bodies (AREA)
EP97110003A 1996-06-21 1997-06-19 Non-tissé multicouche imperméable aux liquides et procédé de fabrication du non-tissé Withdrawn EP0814190A3 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19624770 1996-06-21
DE19624770 1996-06-21

Publications (2)

Publication Number Publication Date
EP0814190A2 true EP0814190A2 (fr) 1997-12-29
EP0814190A3 EP0814190A3 (fr) 1999-08-25

Family

ID=7797566

Family Applications (1)

Application Number Title Priority Date Filing Date
EP97110003A Withdrawn EP0814190A3 (fr) 1996-06-21 1997-06-19 Non-tissé multicouche imperméable aux liquides et procédé de fabrication du non-tissé

Country Status (2)

Country Link
EP (1) EP0814190A3 (fr)
DE (1) DE19725886A1 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7794440B2 (en) 2002-11-08 2010-09-14 The Procter & Gamble Company Disposable absorbent articles with masking topsheet having one or more openings providing a passageway to a void space
CN108823813A (zh) * 2018-06-25 2018-11-16 中原工学院 一种smms组合型水刺非织造基布及其制备方法

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2003085185A2 (fr) * 2002-04-03 2003-10-16 Filtrona Richmond, Inc. Procede et appareil permettant d'incorporer un additif a des produits fibreux et produits en resultant
CN109750517A (zh) * 2018-12-21 2019-05-14 安徽劲派纺织服饰有限公司 一种防静电防水面料及其制备方法

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0260011A2 (fr) * 1986-09-12 1988-03-16 Minnesota Mining And Manufacturing Company Oxazolidinones fluorochimiques
US5145727A (en) * 1990-11-26 1992-09-08 Kimberly-Clark Corporation Multilayer nonwoven composite structure
US5149576A (en) * 1990-11-26 1992-09-22 Kimberly-Clark Corporation Multilayer nonwoven laminiferous structure
WO1995026878A1 (fr) * 1994-04-05 1995-10-12 Kimberly-Clark Corporation Stratifie en non-tisses presentant des proprietes barriere accrues

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0260011A2 (fr) * 1986-09-12 1988-03-16 Minnesota Mining And Manufacturing Company Oxazolidinones fluorochimiques
US5145727A (en) * 1990-11-26 1992-09-08 Kimberly-Clark Corporation Multilayer nonwoven composite structure
US5149576A (en) * 1990-11-26 1992-09-22 Kimberly-Clark Corporation Multilayer nonwoven laminiferous structure
WO1995026878A1 (fr) * 1994-04-05 1995-10-12 Kimberly-Clark Corporation Stratifie en non-tisses presentant des proprietes barriere accrues

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7794440B2 (en) 2002-11-08 2010-09-14 The Procter & Gamble Company Disposable absorbent articles with masking topsheet having one or more openings providing a passageway to a void space
US8414553B2 (en) 2002-11-08 2013-04-09 The Procter & Gamble Company Disposable absorbent article with masking topsheet having one or more openings providing a passageway to a void space
CN108823813A (zh) * 2018-06-25 2018-11-16 中原工学院 一种smms组合型水刺非织造基布及其制备方法

Also Published As

Publication number Publication date
DE19725886A1 (de) 1998-01-08
EP0814190A3 (fr) 1999-08-25

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