EP3164535B1 - Non-tisse destine a donner du volume - Google Patents
Non-tisse destine a donner du volume Download PDFInfo
- Publication number
- EP3164535B1 EP3164535B1 EP16750836.5A EP16750836A EP3164535B1 EP 3164535 B1 EP3164535 B1 EP 3164535B1 EP 16750836 A EP16750836 A EP 16750836A EP 3164535 B1 EP3164535 B1 EP 3164535B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- nonwoven fabric
- fibers
- volume
- fiber
- density
- 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.)
- Active
Links
- 239000004745 nonwoven fabric Substances 0.000 title claims description 138
- 239000000835 fiber Substances 0.000 claims description 225
- 239000000463 material Substances 0.000 claims description 88
- 238000000034 method Methods 0.000 claims description 60
- 239000002994 raw material Substances 0.000 claims description 59
- 239000011230 binding agent Substances 0.000 claims description 42
- -1 polyethylene terephthalate Polymers 0.000 claims description 35
- 230000008569 process Effects 0.000 claims description 32
- 239000004753 textile Substances 0.000 claims description 23
- 229920000728 polyester Polymers 0.000 claims description 19
- 239000005020 polyethylene terephthalate Substances 0.000 claims description 17
- 238000004519 manufacturing process Methods 0.000 claims description 12
- 239000000203 mixture Substances 0.000 claims description 12
- 239000000945 filler Substances 0.000 claims description 11
- 238000012545 processing Methods 0.000 claims description 11
- 229920000139 polyethylene terephthalate Polymers 0.000 claims description 10
- 239000004698 Polyethylene Substances 0.000 claims description 9
- 229920001707 polybutylene terephthalate Polymers 0.000 claims description 9
- 239000004952 Polyamide Substances 0.000 claims description 8
- 229920002647 polyamide Polymers 0.000 claims description 8
- 238000011084 recovery Methods 0.000 claims description 8
- 239000006260 foam Substances 0.000 claims description 7
- 229920000098 polyolefin Polymers 0.000 claims description 7
- 229920003207 poly(ethylene-2,6-naphthalate) Polymers 0.000 claims description 6
- 229920000573 polyethylene Polymers 0.000 claims description 6
- 239000011112 polyethylene naphthalate Substances 0.000 claims description 6
- 229920001155 polypropylene Polymers 0.000 claims description 6
- 210000002268 wool Anatomy 0.000 claims description 6
- 229920001634 Copolyester Polymers 0.000 claims description 5
- 239000004734 Polyphenylene sulfide Substances 0.000 claims description 5
- 239000004743 Polypropylene Substances 0.000 claims description 5
- 229920000069 polyphenylene sulfide Polymers 0.000 claims description 5
- 229920003235 aromatic polyamide Polymers 0.000 claims description 4
- 238000004140 cleaning Methods 0.000 claims description 4
- 238000007596 consolidation process Methods 0.000 claims description 4
- 238000000151 deposition Methods 0.000 claims description 4
- 125000006850 spacer group Chemical group 0.000 claims description 4
- 229920000742 Cotton Polymers 0.000 claims description 3
- 229920002994 synthetic fiber Polymers 0.000 claims description 3
- 239000012209 synthetic fiber Substances 0.000 claims description 3
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- 239000013538 functional additive Substances 0.000 claims description 2
- 238000007493 shaping process Methods 0.000 claims 3
- 239000000047 product Substances 0.000 description 15
- 238000012546 transfer Methods 0.000 description 11
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- 238000009413 insulation Methods 0.000 description 5
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- 239000007858 starting material Substances 0.000 description 5
- 229920001577 copolymer Polymers 0.000 description 4
- ZINJLDJMHCUBIP-UHFFFAOYSA-N ethametsulfuron-methyl Chemical compound CCOC1=NC(NC)=NC(NC(=O)NS(=O)(=O)C=2C(=CC=CC=2)C(=O)OC)=N1 ZINJLDJMHCUBIP-UHFFFAOYSA-N 0.000 description 4
- 229920002239 polyacrylonitrile Polymers 0.000 description 4
- 229920000642 polymer Polymers 0.000 description 4
- 229920002451 polyvinyl alcohol Polymers 0.000 description 4
- 239000007787 solid Substances 0.000 description 4
- 238000003860 storage Methods 0.000 description 4
- 238000012360 testing method Methods 0.000 description 4
- 239000004372 Polyvinyl alcohol Substances 0.000 description 3
- 238000004090 dissolution Methods 0.000 description 3
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- 210000004209 hair Anatomy 0.000 description 3
- 238000005259 measurement Methods 0.000 description 3
- 239000002245 particle Substances 0.000 description 3
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 2
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 241001465754 Metazoa Species 0.000 description 2
- 229920002292 Nylon 6 Polymers 0.000 description 2
- 229920000297 Rayon Polymers 0.000 description 2
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- 229910052799 carbon Inorganic materials 0.000 description 2
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- 229920002678 cellulose Polymers 0.000 description 2
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- 229910052802 copper Inorganic materials 0.000 description 2
- 239000010949 copper Substances 0.000 description 2
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- 238000010438 heat treatment Methods 0.000 description 2
- 230000006872 improvement Effects 0.000 description 2
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- 230000035515 penetration Effects 0.000 description 2
- 229920003023 plastic Polymers 0.000 description 2
- 239000004033 plastic Substances 0.000 description 2
- 230000003014 reinforcing effect Effects 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 238000009827 uniform distribution Methods 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- KXGFMDJXCMQABM-UHFFFAOYSA-N 2-methoxy-6-methylphenol Chemical compound [CH]OC1=CC=CC([CH])=C1O KXGFMDJXCMQABM-UHFFFAOYSA-N 0.000 description 1
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- 229920000049 Carbon (fiber) Polymers 0.000 description 1
- 229920003043 Cellulose fiber Polymers 0.000 description 1
- 229920000877 Melamine resin Polymers 0.000 description 1
- 239000004640 Melamine resin Substances 0.000 description 1
- 239000004962 Polyamide-imide Substances 0.000 description 1
- 239000004793 Polystyrene Substances 0.000 description 1
- BQCADISMDOOEFD-UHFFFAOYSA-N Silver Chemical compound [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 description 1
- 239000003082 abrasive agent Substances 0.000 description 1
- 230000002745 absorbent Effects 0.000 description 1
- 239000002250 absorbent Substances 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- 230000000996 additive effect Effects 0.000 description 1
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 230000004075 alteration Effects 0.000 description 1
- 230000000844 anti-bacterial effect Effects 0.000 description 1
- 229940088710 antibiotic agent Drugs 0.000 description 1
- 239000004599 antimicrobial Substances 0.000 description 1
- 239000002216 antistatic agent Substances 0.000 description 1
- 125000003118 aryl group Chemical group 0.000 description 1
- 239000004917 carbon fiber Substances 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
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- 239000000470 constituent Substances 0.000 description 1
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- 230000001351 cycling effect Effects 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 230000008021 deposition Effects 0.000 description 1
- 239000000975 dye Substances 0.000 description 1
- 238000004043 dyeing Methods 0.000 description 1
- 229910001651 emery Inorganic materials 0.000 description 1
- 239000004744 fabric Substances 0.000 description 1
- 239000012467 final product Substances 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 230000004927 fusion Effects 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 239000003365 glass fiber Substances 0.000 description 1
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 description 1
- 229910052737 gold Inorganic materials 0.000 description 1
- 239000010931 gold Substances 0.000 description 1
- 239000008187 granular material Substances 0.000 description 1
- 238000000227 grinding Methods 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 239000008204 material by function Substances 0.000 description 1
- 239000011159 matrix material Substances 0.000 description 1
- 150000002739 metals Chemical class 0.000 description 1
- 239000012778 molding material Substances 0.000 description 1
- 235000019645 odor Nutrition 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
- 229920001568 phenolic resin Polymers 0.000 description 1
- 239000005011 phenolic resin Substances 0.000 description 1
- 239000000049 pigment Substances 0.000 description 1
- 229920002312 polyamide-imide Polymers 0.000 description 1
- 229920002223 polystyrene Polymers 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 238000007639 printing Methods 0.000 description 1
- 238000007788 roughening Methods 0.000 description 1
- 229910052709 silver Inorganic materials 0.000 description 1
- 239000004332 silver Substances 0.000 description 1
- 238000007711 solidification Methods 0.000 description 1
- 230000008023 solidification Effects 0.000 description 1
- 238000005507 spraying Methods 0.000 description 1
- 239000000758 substrate Substances 0.000 description 1
- 229920001059 synthetic polymer Polymers 0.000 description 1
- 230000003655 tactile properties Effects 0.000 description 1
- 229920001169 thermoplastic Polymers 0.000 description 1
- 230000001331 thermoregulatory effect Effects 0.000 description 1
- 239000004416 thermosoftening plastic Substances 0.000 description 1
- 238000002834 transmittance Methods 0.000 description 1
- 239000006163 transport media Substances 0.000 description 1
- 238000005406 washing Methods 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
- 239000002759 woven fabric Substances 0.000 description 1
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
-
- 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
- D04H1/70—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres characterised by the method of forming fleeces or layers, e.g. reorientation of fibres
- D04H1/72—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres characterised by the method of forming fleeces or layers, e.g. reorientation of fibres the fibres being randomly arranged
- D04H1/732—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres characterised by the method of forming fleeces or layers, e.g. reorientation of fibres the fibres being randomly arranged by fluid current, e.g. air-lay
-
- A—HUMAN NECESSITIES
- A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
- A47G—HOUSEHOLD OR TABLE EQUIPMENT
- A47G9/00—Bed-covers; Counterpanes; Travelling rugs; Sleeping rugs; Sleeping bags; Pillows
- A47G9/02—Bed linen; Blankets; Counterpanes
-
- 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
- D04H1/005—Making three-dimensional articles by consolidation
-
- 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
- D04H1/02—Cotton wool; Wadding
-
- 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
-
- 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
-
- 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
-
- 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
- D04H1/70—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres characterised by the method of forming fleeces or layers, e.g. reorientation of fibres
-
- 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
- D04H1/70—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres characterised by the method of forming fleeces or layers, e.g. reorientation of fibres
- D04H1/72—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres characterised by the method of forming fleeces or layers, e.g. reorientation of fibres the fibres being randomly arranged
-
- A—HUMAN NECESSITIES
- A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
- A47G—HOUSEHOLD OR TABLE EQUIPMENT
- A47G9/00—Bed-covers; Counterpanes; Travelling rugs; Sleeping rugs; Sleeping bags; Pillows
- A47G9/08—Sleeping bags
-
- A—HUMAN NECESSITIES
- A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
- A47G—HOUSEHOLD OR TABLE EQUIPMENT
- A47G9/00—Bed-covers; Counterpanes; Travelling rugs; Sleeping rugs; Sleeping bags; Pillows
- A47G9/10—Pillows
Definitions
- the invention relates to a process for producing a volume nonwoven fabric, the volume nonwoven fabrics obtainable by the process and their uses.
- Fillers for textile applications are widely known. For example, fine feathers, down and pet hair, such as wool have long been used to fill blankets and garments. Down fillers are very comfortable to use because they combine very good thermal insulation with a low weight. A disadvantage of these materials, however, is that they have only a slight cohesion with each other.
- Nonwoven fabrics are webs of limited length fibers (staple fibers), filaments (continuous fibers) or cut yarns of any type and origin, which in some way form a nonwoven web (a batt) and joined together in some way.
- a disadvantage of conventional fiber webs or nonwoven fabrics is that they have less fluffiness than voluminous fillers such as down.
- the thickness of conventional nonwovens over an extended period of use is becoming thinner and thinner.
- Fiber balls contain more or less spherically entangled fibers, which usually have approximately the shape of a ball.
- Fiber balls described that can be used as a filling or cushioning material. These fiberballs consist of spirally crimped interwoven polyester fibers with a length of about 10 to 60 mm and a diameter between 1 and 15 mm. The fiberballs are elastic and heat insulating.
- a disadvantage of the fiber balls is that they, such as down, feathers, animal hair or the like, have only a low cohesion with each other. Consequently, such fiberballs are only poorly suited as filling material for flat textile materials in which the fiberballs are to lie loosely, since due to their Slight adhesion can slip. To avoid slippage in the flat textile materials, these are often stitched.
- the EP 0 257 658 B1 to use fiber balls with protruding fiber ends, which may also have hooks.
- the production of such materials is relatively complex and the fiber ends can bend or bend during transport, storage and processing.
- the WO 91/14035 proposes to thermally solidify a nonwoven raw material of fiberballs and binding fibers to layers and then to needling.
- the nonwoven raw materials are passed in a stream of air to a single spiked roller and deposited by this on a belt.
- a disadvantage of the products is that the stability without needling is low, since the binding fibers can only slightly stabilize the voluminous, loose fiber balls. To achieve sufficient stability, needling is performed, which complicates the process and undesirably increases the density of the product.
- the EP 0 268 099 discloses methods of making fiberballs having modified surfaces.
- the surface of the fiber balls can be equipped with binding fibers. From the fiberballs, composites can be made by heating. The production of the fiber balls is relatively expensive. Because the fiberballs are bonded to binder fibers only at the surface, the stability of the composites is limited. Because of the flat binding sites, other product properties, such as fluffiness and elasticity, require improvement.
- the WO2012 / 006300 discloses nonwoven fabrics that have binder fibers and are thermally bonded in bonding areas.
- the nonwovens may contain solid additives in particulate form (pages 20 to 28).
- the additives are relatively hard solids, such as abrasives or porous foams.
- solid particles are added which are prepared in advance by grinding sponges in a hammer mill. The document does not relate to the production of textile fillers or other bulky high volume bulk materials.
- the WO 2005/044529 A1 describes devices with which different materials can be homogenized in an aerodynamic process.
- the raw materials pass through rotating spiked rollers.
- the method can be used for example for processing cellulose fibers, synthetic fibers, pieces of metal, plastic parts or granules. Such relatively harsh processes are used inter alia in waste management.
- the invention is based on the object to provide a volume nonwoven fabric and method for its production, which combines various advantageous properties.
- the nonwoven fabric should in particular be voluminous and have a low density, and at the same time have a high stability, in particular a good tensile strength. It is said to combine good thermal insulation capability with high softness, high compressive elasticity, low weight, and good conformability to a body to be wrapped.
- the nonwoven fabric should have sufficient washing stability and mechanical stability in order, for example, to be able to handle it as a sheet product.
- the nonwoven fabric should be able to be cut and rolled up.
- the nonwoven fabric should be suitable for textile applications.
- a nonwoven raw material is used.
- raw material is meant a mixture of the components which are to be processed together to form the volume nonwoven fabric.
- the raw material is a loose mixture, that is, the components have not been bonded together, in particular not thermally bonded, needled, glued or similar processes in which a targeted chemical or physical bond is generated.
- the nonwoven raw material in step (a) contains fiberballs.
- Fiber balls are well known in the art and are used as fillers. These are relatively small and lightweight fiber agglomerates that are readily separable from each other. Structure and shape may vary depending on the materials used and the desired properties of the bulk nonwoven.
- the term fiberballs should be understood to mean both spherical and spherical shapes, for example irregular and / or deformed, for example flattened or elongated, spherical shapes. Spherical and spherical shapes have been found to exhibit particularly good fluffiness and thermal insulation properties. Processes for producing fiberballs are known in the art and are described, for example, in US Pat EP 0 203 469 A described.
- the fibers may be relatively evenly distributed in a fiberball, with the density decreasing outwardly. It is conceivable that, for example, there is a uniform distribution of the fibers within the fiber balls and / or a fiber gradient. Alternatively, the fibers may be arranged substantially in a ball sleeve, while relatively few fibers are arranged in the center of the fiber balls.
- fibers are contained in the fiberballs.
- the fibers may be disordered or have a certain order.
- the fibers are confused inside the individual fiberballs and spherically arranged in an outer layer of the fiberballs.
- the outer layer based on the diameter of the fiber balls, comparatively small. As a result, the softness of the fiber balls can be further increased.
- the type of fibers present in the fiberballs is fundamentally uncritical if they are suitable for forming fiberballs, for example by means of a suitable surface structure and fiber length.
- the fibers of the fiber balls are preferably selected from the group consisting of staple fibers, threads and / or yarns.
- staple fibers in contrast to filaments having a theoretically unlimited length, fibers with a limited length, preferably from 20 mm to 200 mm to understand.
- the threads and / or yarns also preferably have a limited length, in particular from 20 mm to 200 mm.
- the fibers may be present as monocomponent filaments and / or composite filaments.
- the titer of the fibers can also vary.
- the average denier of the fibers is in the range of 0.1 to 10 dtex, preferably 0.5 to 7.5 dtex.
- the fiber balls used are not thermally preconsolidated. As a result, a particularly soft and voluminous volume nonwoven fabric can be obtained.
- an advantageous volume nonwoven fabric can be obtained if a volumetric nonwoven raw material containing fiberballs and binder fibers is processed in an airlaid method with spiked rollers. It has thus been found that, when processing the mixture between spiked rollers in an airlaid process, efficient opening, mixing and alignment of the nonwoven raw material is achieved without the material being completely destroyed. This was surprising, for example as a raw material used fiberballs are extremely filigree, so that it was assumed that they are destroyed in such a device, which is at the expense of the stability and function of the final product. It was unpredictable whether fiberballs with devices with spiked rollers, which actually serve to destroy structures, are even processable.
- the spiked rollers are arranged in pairs in the device, so that the metal spokes can interlock.
- the interlocking of the metal spokes creates a dynamic sieve, which allows the nonwoven raw materials to be separated and evenly distributed.
- a treatment with paired spiked rollers in the case of the fiber balls can lead to a loosening of the fiber structure without destroying the ball shape as a whole.
- fibers or fiber bundles can be pulled out of the balls so that they are still connected to the fiber balls, but protrude from the surface. This is advantageous because the extracted fibers entangle the individual balls with one another and thereby increase the tensile strength of the volume nonwoven fabric.
- a matrix of individual fibers can form in which the balls are embedded, which increases the softness of the volume nonwoven fabric.
- the method has the advantage that the binding fibers are very closely connected to the nonwoven balls. It is believed that some of the spines also introduce some of the binder fibers into the fiberballs. Thus, both materials penetrate each other. As a result, in the case of thermal consolidation, the proportion of the bond between the fiber balls and the binding fibers increases significantly. For this reason, the nonwovens also have exceptionally high stability. Thus, the nonwoven fabric according to the invention is significantly more stable than products from conventional processes in which only fiberballs are opened or carded and then mixed with binder fibers.
- airlaid process refers to the fact that the nonwoven raw material containing fiberballs and binder fibers is processed and deposited in the air stream with the spiked rollers.
- the nonwoven raw material is in Air flow led to the spiked rollers and processed by them.
- This has the advantage that the nonwoven raw material while working with the spiked rollers remains in loose, voluminous form, but is thoroughly mixed, the spikes penetrate the fleece balls.
- the process thus differs significantly from conventional processes in which webs of nonwoven raw material are carded. In such carding processes, the nonwoven raw materials are substantially aligned.
- the process allows a very uniform distribution of the raw material on the deposit belt and a very homogeneous volume nonwoven fabric can be obtained in which the volume-giving material is uniformly distributed.
- the homogeneous distribution of the bulking material is particularly advantageous in view of the thermal insulation ability and softness as well as for the recovery of the bulk nonwoven fabric.
- a very homogeneous volume nonwoven fabric can be obtained.
- the fiber balls and binding fibers can be intimately mixed and are very homogeneously and evenly distributed before. This was surprising, as it had to be assumed that filigree fiberballs, but also other filigree components, such as down, are destroyed when treated with spiked rollers.
- the structure of the individual fiberballs in the bulk nonwoven fabric is uneven.
- the fiberballs in the nonwoven fabric have at least partially lost their original shape.
- the structure of the fiberballs in the bulk nonwoven fabric could be described as frayed, partially disintegrated or partially destroyed.
- the spiked rollers act on each individual fiberballs randomly and thus differently. Therefore, the number, size and structure of the areas where fibers or fiber bundles are pulled out of the fiber balls, or in which binding fibers are drawn into the fiber balls, are randomly distributed.
- round fiberballs used as starting materials form structures in the nonwoven fabric that are quite solid could be described as being star-shaped with irregular spikes.
- the fiber balls give the product a low density and a high softness and fluffiness.
- the structure differs significantly from known fibrous web and fiber nonwovens, which are simply produced by blending without disintegrating the fiber balls.
- Such nonwoven fabrics have defined solidified areas, resulting in less softness due to the more solidified areas and less stability due to the non-solidified areas.
- the nonwoven raw material is as even as possible in the Airlaidvorraum, comprising at least a pair of spiked rollers presented, in which the components are opened and mixed together.
- the fiber deposition for web formation in a conventional manner, for example on a wire, a screen drum and / or a conveyor belt.
- the formed web can then be consolidated in a conventional manner.
- the thermal solidification for example, with a belt furnace proved. In this way it is exploited that the binding fibers are closely connected to the fiber balls.
- volume nonwoven fabric an undesirable compression of the volume nonwoven fabric, as would occur, for example, in a hydroentanglement or needling, can be avoided.
- a double belt hot air oven has proven.
- An advantage of the use of such a hot air oven is that a particularly effective activation of the binder fibers can be obtained while smoothing the surface and maintaining the volume.
- the spiked rollers are arranged in rows.
- the spiked rollers are advantageously arranged in at least one row.
- the metal spokes of the adjacent spiked rollers can interlock.
- each roller can simultaneously form a pair with each of its adjacent rollers which can act as a dynamic screen.
- the rows can also be present in pairs (double rows) in order to obtain a particularly good opening and mixing of the fibers and fiber balls.
- the spiked rollers are advantageously arranged in at least one double row. It is also conceivable that at least a part of the fiber material is repeatedly guided by means of a return system through the same spiked rollers.
- a circulating endless belt or aerodynamic means may be used, such as tubes, through which the material is blown upwards.
- the band may advantageously be arranged between two rows of spiked rollers.
- the endless belt can also be guided by a plurality of double rows of spiked rollers arranged one behind the other or one above the other.
- the device has spiked rollers.
- the spikes When rotating two opposing rolls, which form a gap for the passage of nonwoven raw material, the spikes preferably engage in a staggered manner.
- the spikes preferably have a thin, elongated shape.
- the spines are long enough to achieve a good penetration of the materials and the fiber balls.
- the length of the spines is preferably between 1 and 30 cm, in particular between 2 and 20 cm or between 5 and 15 cm.
- the length of the spines may be at least 5 or at least 10 times as large as the widest diameter of the spines.
- the gap between the spiked rollers through which the nonwoven stock passes is preferably so wide that the nonwoven stock is not compacted as it passes. By opening the nonwoven balls, the material is loosened up rather.
- the spines each have a length on both sides which corresponds to more than 50%, preferably at least 60%, at least 70% or at least 80% of the (narrowest) width of the gap.
- the spines on both sides each have a length which corresponds to more than 50% to 99% or 60% to 95% of the (narrowest) width of the gap.
- the device has at least two pairs, preferably at least 5 pairs or at least 10 pairs of spiked rollers, and / or the device preferably has at least 2, at least 5 or at least 10 gaps between the spiked rollers.
- the device has at least two pairs, preferably at least 5 pairs or at least 10 pairs of spiked rollers, and / or the device preferably has at least 2, at least 5 or at least 10 gaps between the spiked rollers.
- the device is preferably designed such that the contact surface of the spiked rollers with the nonwoven raw material is as large as possible.
- a plurality of spiked rollers are present, for example at least 5, at least 10 or at least 20 spiked rollers.
- the rollers may for example be cylindrical.
- the cylindrical rollers are firmly connected to the spines. It is also conceivable to equip a roll core with circumferential barbed bands. Preferably, several levels are present, so that the material is processed several times.
- the device could have from 2 to 10 spiked rollers arranged in pairs for the opening of the fiber raw material 2 to 10 rows. It could have four arranged in two pairs rows with five spiked rollers.
- Such airlaid devices are available, for example, under the trade designation "SPIKE" air-laid system from Formfiber Denmark APS.
- the process is an airlaid process, ie an aerodynamic web formation process, that is, the web formation takes place with the aid of air.
- the basic principle of this method is the transfer of the nonwoven raw material into an air stream, which allows a mechanical distribution of the nonwoven raw material in machines longitudinal and / or transverse direction and finally a homogeneous storage of the nonwoven raw material on a vacuumed conveyor belt.
- air can be used in a variety of process steps.
- the entire transport of the nonwoven raw material takes place during web formation aerodynamically, for example by means of an installed air system. It is also conceivable, however, that only special process steps, such as the decrease of the fibers are supported by the spiked rollers by additional air.
- the processes of nonwoven raw material processing or nonwoven raw material dissolution are directly preceded by the web formation process.
- the optional mixing with non-fiber materials, for example down and / or foam parts, preferably takes place directly during the distribution of the fiber material in the nonwoven forming system.
- the material (the nonwoven raw material or its components) can be transported via a supply and distribution system in the nonwoven forming unit, where a targeted opening, turbulence and at the same time homogeneous mixing and distribution takes place.
- the feed for each material component advantageously takes place separately.
- the nonwoven raw material is preferably treated with at least two spiked rollers with which a processing or dissolution of the fiber material is carried out.
- Particularly good results are achieved when the nonwoven raw material by a series of rotating, equipped with metal spokes waves (the so-called spikes) is performed as a spiked roller.
- the adjacent spiked rollers are in opposite directions.
- particularly strong forces can act on the nonwoven raw material.
- the interlocking of the metal spokes creates a dynamic sieve that allows high throughputs. The process is thus significantly different from a process as in WO91 / 14035 in which nonwoven raw material is guided and deposited by only a single spiked roller. It can not act forces on the material with the associated structural changes as in the inventive method.
- the nonwoven forming takes place on a vacuumed screen belt.
- a random web structure can be produced without pronounced fiber orientation, the density of which is related to the intensity of the prohibition.
- An advantage of the aerodynamic nonwoven formation is that the fibers and any other constituents present in the nonwoven raw material can be arranged in a random orientation, which enables a very high property isotropy.
- this embodiment offers economic advantages resulting from the investment volume and the operating costs for the production equipment.
- the web formation takes place in a plurality of nonwoven forming units arranged one behind the other.
- a storage belt for example a vacuumed screen belt
- a plurality of web forming units in each of which the deposit of a layer of a nonwoven takes place.
- a multilayer nonwoven fabric can be produced.
- the nonwoven is thermally consolidated.
- no pressure is exerted on the nonwoven fabric.
- thermal consolidation may take place without applying pressure in an oven. This has the advantage that the nonwoven fabric is very bulky, although it has a high strength.
- the nonwoven bonding can be supported in a conventional manner, for example chemically by spraying with binder, thermally by melting previously added adhesive powder and / or mechanically, for. B. by needling and / or hydroentanglement.
- the proportion of fiber balls is 50 to 95 wt .-%, preferably 60 to 95%, in particular from 70 to 90%, and / or the proportion of binder fibers in the volume nonwoven fabric 5 to 40 wt.%, Preferably 7 to 30% by weight and particularly preferably from 10 to 25% by weight, in each case based on the total weight of the nonwoven raw material.
- the fiber balls preferably contain or consist of fibers selected from synthetic polymers, in particular fibers from polyester, in particular polyethylene terephthalate, polyethylene naphthalate and polybutylene terephthalate; and natural fibers, in particular fibers of wool, cotton or silk, and / or mixtures thereof and / or mixtures with other fibers.
- synthetic polymers in particular fibers from polyester, in particular polyethylene terephthalate, polyethylene naphthalate and polybutylene terephthalate
- natural fibers in particular fibers of wool, cotton or silk, and / or mixtures thereof and / or mixtures with other fibers.
- the fiber balls can consist of a wide variety of fibers.
- the fiberballs may be natural fibers, for example wool fibers and / or synthetic fibers, for example fibers of polyacrylic, polyacrylonitrile, preoxidized PAN, PPS, carbon, glass, polyvinyl alcohol, viscose, cellulose, cotton polyaramides, polyamideimide, polyamides, in particular polyamide 6 and Polyamide 6.6, PULP, preferably polyolefins and most preferably polyesters, in particular polyethylene terephthalate, polyethylene naphthalate and polybutylene terephthalate, and / or mixtures of those mentioned include and / or consist thereof.
- fiber balls of wool fibers are used.
- fiber balls of polyester are used in order to achieve a particularly good compatibility with the usual further components within the volume nonwoven fabric or in a nonwoven composite.
- the fiberballs additionally contain binding fibers themselves, which preferably have a length of 0.5 mm to 100 mm.
- the nonwoven raw material in step (a) contains binder fibers in addition to the fiber balls.
- binder fibers are loose fibers and not a component of the fiberballs.
- these binder fibers are configured as core / sheath fibers, the sheath comprising polybutylene terephthalate, polyamide, copolyamides, copolyesters or polyolefins such as polyethylene or polypropylene, and / or the core polyethylene terephthalate, polyethylene naphthalate, polyolefins such as polyethylene or polypropylene, polyphenylene sulfide , aromatic polyamides and / or polyesters.
- the melting point of the sheath polymer is usually higher than that of the core polymer, for example, more than 10 ° C.
- binder fibers according to the invention are multicomponent fibers, preferably bicomponent fibers, in particular core / sheath fibers.
- Core / sheath fibers contain at least two fiber materials with different softening and / or melting temperature.
- Core / sheath fibers preferably consist of these two fiber materials. In this case, that component which has the lower softening and / or melting temperature is to be found in the core at the fiber surface (sheath) and that component which has the higher softening and / or melting temperature.
- the bonding function may be exerted by the materials disposed on the surface of the fibers.
- the materials disposed on the surface of the fibers For the coat the most different materials can be used.
- Preferred materials for the sheath according to the invention are PBT, PA, polyethylene, copolyamides or copolyesters. Particularly preferred is polyethylene.
- Preferred materials for the core according to the invention are PET, PEN, PO, PPS or aromatic PA and PES.
- binder fibers An advantage of the presence of binder fibers is that the bulking material in the bulk web is held together by the binder fibers, so that a textile wrapper filled with the bulk web can be used without that the volume-giving material shifts substantially and are formed by missing filler cold bridges.
- the binder fibers have a length of from 0.5 mm to 100 mm, more preferably from 1 mm to 75 mm, and / or a titer of from 0.5 to 10 dtex.
- the binder fibers have a linear density of from 0.9 to 7 dtex, more preferably from 1.0 to 6.7 dtex, and in particular from 1.3 to 3.3 dtex.
- the proportion of binder fibers in the volume nonwoven fabric is adjusted depending on the type and amount of the further components of the volume nonwoven fabric and the desired stability of the volume nonwoven fabric. If the proportion of binder fibers is too low, the stability of the volume nonwoven fabric deteriorates. If the proportion of binder fibers is too high, then the total volume of nonwoven fabric becomes too strong, which is at the expense of its softness. Practical tests have shown that a good compromise between stability and softness is obtained when the proportion of binder fibers in the range of 5 to 40 wt.%, Preferably 7 to 30 wt.% And particularly preferably from 10 to 25 wt.%. In this case, a volume nonwoven fabric can be obtained which is stable enough to be rolled and / or folded. This facilitates the handling and further processing of the volume nonwoven fabric. Furthermore, such a volume nonwoven fabric is washable. For example, it is stable enough to withstand three household washes at 40 ° C without disintegration.
- the binding fibers can be bonded to one another and / or to the other components of the volume nonwoven fabric by a thermofusion.
- Hot calendering with heated, smooth or engraved rolls, through pulling through a hot-air tunnel kiln, hot-air double belt kiln and / or through drawing through a drum through which hot air flows have proven particularly suitable.
- An advantage of using a double belt hot air oven is that a particularly effective activation of the binder fibers can take place while smoothing the surface, while maintaining the volume.
- volume nonwoven fabric can also be solidified by subjecting the optionally pre-consolidated fiber web to fluid jets, preferably jets of water, at least once on each side.
- the mixture contains at least one further component which is not a fibrous ball or binder fibers.
- the total content of such further components is preferably up to 45% by weight, up to 30% by weight, up to 20% by weight or up to 10% by weight.
- such further components are selected from other fibers, other bulking materials and other functional additives.
- further fibers which are not binding fibers are contained as a further component.
- Such fibers may provide the nonwoven webs with particular properties such as softness, optical properties, refractoriness, tear resistance, conductivity, water management or the like. Since these fibers are not in the form of fiber balls, they can have a wide variety of surface texture and in particular be smooth fibers. For example, silk fibers can be used as further fibers to provide the volume nonwoven fabric with a special shine.
- the proportion of further fibers in the volume nonwoven fabric from 2 to 40 wt .-%, in particular from 5 to 30 wt .-%.
- the further fibers preferably have a length of 1 to 200 mm, preferably of 5 mm to 100, and / or a titer of 0.5 to 20 dtex.
- volumetric materials which are not fiberballs, in particular down, fine feathers or foam particles, are contained as a further component.
- the other materials can affect the density and provide the material with other desired properties.
- Particularly preferred is the use of down or fine feathers in textile applications, especially in the clothing sector, which can improve the thermal properties.
- down and / or fine feathers are used as the volume-giving material, their proportion in the volume nonwoven fabric is, for example, 10 to 45% by weight, preferably from 15 to 45% or at least 15% by weight.
- the term down and / or fine feathers is understood according to the invention in the conventional sense.
- down and / or fine feathers are understood to mean feathers with a short keel and very soft and long, radially arranged spring branches substantially without a hook.
- the volume nonwoven web contains a phase change material.
- Phase change materials are materials whose latent heat of fusion, heat of dissolution or heat of absorption is much greater than the heat they can store because of their normal specific heat capacity (without the phase change effect).
- the phase change material may be contained in particle form and / or fibrous form in the composite material and be connected, for example via the binder fibers with the remaining components of the volume nonwoven fabric. The presence of the phase change material can aid the insulating effect of the bulk nonwoven fabric.
- the polymers used for producing the fibers of the volume nonwoven fabric may contain at least one additive selected from the group consisting of color pigments, antistatic agents, antimicrobials such as copper, silver, gold, or hydrophilizing or hydrophobing additives in an amount of 150 ppm to 10 wt.% ,
- additives selected from the group consisting of color pigments, antistatic agents, antimicrobials such as copper, silver, gold, or hydrophilizing or hydrophobing additives in an amount of 150 ppm to 10 wt.% .
- the density of the bulk nonwoven fabric is at least 5%, preferably at least 10%, even more preferably at least 25% lower than the density of the nonwoven fabric balls used in step (a). This is advantageous because a particularly bulky nonwoven fabric is obtained which nonetheless has a very high stability.
- the process is carried out so that the volume nonwoven fabric obtained in step (e) is not mechanically solidified. This is advantageous because a product with a very low density is obtained.
- the bulk nonwoven fabric after thermal consolidation in step (e), may be subjected to chemical type bonding or finishing such as anti-pilling treatment, hydrophilization or hydrophobization, antistatic treatment, refractory improvement treatment, and / or alteration tactile properties or gloss, a mechanical treatment such as roughening, sanforizing, emery or tumble treatment and / or a change appearance treatment such as dyeing or printing.
- chemical type bonding or finishing such as anti-pilling treatment, hydrophilization or hydrophobization, antistatic treatment, refractory improvement treatment, and / or alteration tactile properties or gloss
- a mechanical treatment such as roughening, sanforizing, emery or tumble treatment and / or a change appearance treatment such as dyeing or printing.
- the volume nonwoven fabric according to the invention may contain further layers, whereby a nonwoven composite is formed.
- the further layers are formed as reinforcing layers, for example in the form of a scrim and / or that they comprise reinforcing filaments, nonwovens, woven fabrics, knitted fabrics and / or scrims.
- Preferred materials for forming the further layers are plastics, for example polyesters, and / or metals.
- the further layers may advantageously be arranged on the surface of the volume nonwoven fabric. According to a preferred embodiment of the invention, the further layers are arranged on both surfaces (top and bottom side) of the volume nonwoven fabric.
- the volume nonwoven fabric according to the invention is outstandingly suitable for the production of a wide variety of textile products, in particular products which are said to be lightweight, stable and, moreover, thermophysiologically comfortable.
- the invention therefore also provides a process for producing a textile material, comprising producing a volume nonwoven fabric in a process according to the invention and further processing into the textile material.
- the textile material is in particular selected from clothing, molding materials, padding materials, filling materials, bedding, filter mats, absorbent mats, cleaning textiles, spacers, foam substitutes, wound dressings and fire protection materials.
- the volume nonwoven fabric can therefore be used in particular as a form, upholstery and / or filling material, in particular for clothing.
- the form, upholstery and / or filling materials are also suitable for other applications, for example, for sitting and lying furniture, pillows, pillow cases, duvets, underpants, sleeping bags, mattresses, mattress pads.
- item of clothing is used according to the invention in the conventional sense and preferably includes fashion, leisure, sports, outdoor and functional clothing, especially outerwear, such as jackets, coats, vests, pants, overalls, gloves, hats and / or shoes. Due to the good heat-insulating properties of the volume nonwoven fabric contained therein are particularly preferred garments heat insulating garments, such as jackets and coats for all seasons, especially winter jackets, coats and vests, ski and snowboard jackets, pants and overalls, thermal jackets, coats and vests, ski and snowboard gloves, winter hats, thermal caps and slippers.
- outerwear such as jackets, coats, vests, pants, overalls, gloves, hats and / or shoes.
- Due to the good heat-insulating properties of the volume nonwoven fabric contained therein are particularly preferred garments heat insulating garments, such as jackets and coats for all seasons, especially winter jackets, coats and vests, ski and snowboard jackets, pants and overalls, thermal jackets, coats and vests,
- particularly preferred garments are those with shock-absorbing properties at particularly stressed areas, such as goalie pants, cycling and riding pants.
- the invention also provides a volume nonwoven fabric obtainable by the process according to the invention.
- the volume nonwoven fabrics of the invention are characterized by a special structure and special properties, which are realized by the special manufacturing process.
- very lightweight nonwovens can be produced which have exceptional stability.
- the nonwovens can also have very good heat-insulating properties and a high softness, high compressive elasticity, good resilience, good washability, have a low weight, high insulation capacity and a good adaptation to a body to be wrapped.
- the invention also provides a volume nonwoven fabric of fiberballs and binder fibers, wherein fibers or fiber bundles are pulled out of the fiber balls, wherein the volume nonwoven fabric is thermally bonded and has a density in the range of 1 to 20 g / l.
- the fibers and fiber bundles are uneven and / or randomly pulled out of the fiber balls.
- This volume nonwoven fabric may also have the further features which will be described below.
- the thickness of the volume nonwoven fabric may for example be between 0.5 and 500 mm, in particular from 1 to 200 mm or between 2 and 100 mm.
- the thickness of the volume nonwoven fabric is preferably chosen as a function of the desired insulating effect and the materials used. Usually with thicknesses (measured according to test specification EN 29073 - T2: 1992) in the range of 2mm to 100mm good results are achieved.
- the basis weights of the volume nonwoven fabric according to the invention are adjusted depending on the desired application. As for many applications have basis weights, measured according to DIN EN 29073: 1992, in the range of 15 to 1500g / m 2 , preferably from 20 to 1200g / m 2 and / or from 30 to 1000g / m 2 and / or 40 to 800 g / m 2 and / or from 50 to 500 g / m 2 proved.
- the density of the bulk nonwoven fabric is low. It is preferably less than 20 g / l, less than 15 g / l, less than 10 g / l or less than 7.5 g / l.
- the density may, for example, be in the range from 1 to 20 g / l, in particular from 2 to 15 g / l or from 3 to 10 g / l. It is preferable for many applications of bulk nonwoven fabrics that the density is not higher than 10 g / L, especially not higher than 8 g / L. is.
- the density is preferably calculated from the basis weight and the thickness. However, it is also possible according to the invention to produce advantageous, particularly stable bulk nonwovens having higher densities.
- the inventive volume nonwoven fabric is characterized by a high maximum tensile strength.
- the tensile strength can be adjusted so that the volume nonwoven fabric can be easily prepared as sheet goods, further processed and used.
- the volume nonwoven fabric can be cut and rolled up. In addition, it can be washed without loss of function.
- the volume nonwoven fabric according to the invention is characterized by a surprisingly easily adjustable stability. For many applications, it has proved to be advantageous if the volume nonwoven fabric has a high maximum tensile force, measured in the context of this application according to DIN EN 29 073-3: 1992.
- the maximum tensile force is generally identical in the longitudinal and transverse directions. Preferably, the values given below apply to both the longitudinal and the transverse direction.
- the volume nonwoven fabric has a high stability. He preferably has a maximum tensile force of at least 2 N / 5cm, in particular of at least 4N / 5cm or at least 5N / 5cm.
- the volume nonwoven preferably has a maximum tensile force in at least one direction of at least 0.3 N / 5 cm, in particular from 0.3 N / 5 cm to 100 N / 5 cm at a basis weight of 50 g / m 2 .
- the volume nonwoven fabric has a maximum tensile force at a basis weight of 15 to 1500 g / m 2 , preferably from 20 to 1200 g / m 2 and / or from 30 to 1000 g / m 2 and / or from 40 to 800 g / m 2 and / or from 50 to 500 g / m 2 in at least one direction of at least 0.3N / 5cm, in particular from 0.3N / 5cm to 100N / 5cm.
- the volume nonwoven fabric preferably has a quotient of maximum tensile force [N / 5 cm] / thickness [mm] of at least 0.10 [N / (5 cm * mm)], preferably at least 0.15 [N / (5 cm * mm)] or at least 0, 18 [N / (5cm * mm)].
- the density is preferably not higher than 10 g / L, especially not higher than 8 g / L. It is unusual that a low-density volume nonwoven fabric achieves such a high HZK (in terms of thickness).
- the volume nonwoven fabric preferably has a quotient of maximum tensile force [N / 5 cm] / basis weight [g / m 2 ] of at least 0.020 [N * m 2 / (5 cm * g)], preferably at least 0.025 [N * m 2 / (5 cm * g)] or at least 0.030 [N * m 2 / (5cm * g)].
- the density is preferably not higher than 10 g / L, in particular not higher than 8 g / L. It is unusual that a volume nonwoven fabric achieves such a high HZK based on the weight per unit area.
- the volume nonwoven fabric preferably has a maximum tensile force elongation of at least 20%, preferably at least 25% and in particular more than 30%, measured according to DIN EN 29 073-3.
- the density is preferably not higher than 10 g / L, especially not higher than 8 g / L.
- the volume nonwoven fabric according to the invention is characterized by good heat insulating properties. It preferably has a heat transfer resistance (R CT value) of more than 0.10 (K * m 2 ) / W, more than 0.20 (K * m 2 ) / W or more than 0.30 (K * m 2 ) / W on.
- R CT value heat transfer resistance
- the density is preferably not higher than 10 g / L, in particular not higher than 8 g / L
- the thermal resistance is either measured according to DIN 11092: 2014-12, or based on DIN 52612: 1979 according to the following Method. It was found that the results are comparable in both methods.
- the volume nonwoven fabric preferably has a thermal transfer resistance ratio R CT [Km 2 / W] / thickness [mm] of at least 0.010 [Km 2 / (W * mm)], preferably at least 0.015 [Km 2 / (W * mm)].
- the density is preferably not higher than 10 g / L, especially not higher than 8 g / L. It is unusual for a low density volume nonwoven fabric to achieve such a high R CT (in terms of caliper).
- the volume nonwoven preferably has a quotient of heat transfer resistance R CT [Km 2 / W] / basis weight [g / m 2 ] of at least 0.0015 [Km 4 / (W * g)], preferably at least 0.0020 [Km 4 / (W * g)] or at least 0.0024 [Km 4 / (W * g)].
- the density is preferably not higher than 10 g / L, especially not higher than 8 g / L. It is unusual for a volume nonwoven fabric to achieve such a high R CT value in terms of basis weight.
- a garment understood comprising a volume nonwoven fabric with a heat transfer resistance, at a basis weight of 15 to 1500g / m 2 , preferably from 20 to 1200g / m 2 and / or from 30 to 1000g / m 2 and / or 40 to 800 g / m 2 and / or from 50 to 500 g / m 2 , of at least 0.030 (K * m 2 ) / W, in particular from 0.030 to 7,000 (K * m 2 ) / W.
- the volume nonwoven fabric has a heat transfer resistance at a basis weight of 15 to 1500 g / m 2 , preferably from 20 to 1200 g / m 2 and / or from 30 to 1000 g / m 2 and / or from 40 to 800 g / m 2 and / or from 50 to 500 g / m 2 , of at least 0.030 (K * m 2 ) / W, in particular from 0.030 to 7,000 (K * m 2 ) / W.
- the heat transfer resistance (R CT ) was measured according to the exemplary embodiments of this application on the basis of DIN 52612: 1979 with a two-plate measuring device for samples with the dimensions 250mm x 250mm:
- a heatable by means of a constant electric power P film.
- the film is covered both above and below with a pattern of the same material.
- Above and below the pattern is a copper plate, which is kept constant by means of an external thermostat Temperature (T outside ) is maintained.
- T outside an external thermostat Temperature
- a bulk nonwoven fabric may be prepared as follows: There are 120 g / m 2 of 35 wt.% Fiber balls of 7 dtex / 32mm PES siliconized (Dacron Polyester Fiberfill Type 287), which are loaded with 40% mPCM 28 ° C PC temperature enthalpy, 30 wt.% Fiber balls made of CoPES binding fiber and 35% by weight of down and / or fine feathers and springs of Minardi in a "SPIKE" air-laid system of the company Formfiber Denmark APS, which arranged four pairs of rows of five each for opening the fiber raw material Having spiked rollers, placed on a carrier tape and solidified in a double belt furnace from Bombi Meccania with a band gap of 10 mm at 155 ° C. The residence time is 36 seconds. It is made a rollable web material.
- Thickness, density, basis weight, maximum tensile force, ultimate tensile elongation, recovery and thermal resistance (R CT ) were determined according to the methods described above.
Claims (15)
- Procédé de fabrication d'un non-tissé volumineux, comprenant les étapes suivantes :(a) la préparation d'une matière première de non-tissé, contenant des boulettes de fibres et des fibres de liaison,(b) la préparation d'un dispositif aérodynamique par voie sèche, qui comprend au moins deux cylindres à pointes entre lesquels une fente est formée,(c) le traitement de la matière première de non-tissé dans le dispositif par un procédé aérodynamique par voie sèche, la matière première de non-tissé passant dans la fente entre les cylindres à pointes, des fibres ou des faisceaux de fibres étant extraits des boulettes de fibres par les pointes,(d) la pose sur un dispositif support et(e) la consolidation thermique pour obtenir le non-tissé volumineux.
- Procédé selon la revendication 1, dans lequel le dispositif comprend au moins deux paires, de préférence au moins 5 paires ou au moins 10 paires de cylindres à pointes, et/ou dans lequel le dispositif comprend de préférence au moins 2, au moins 5 ou au moins 10 fentes entre les cylindres à pointes.
- Procédé selon au moins l'une quelconque des revendications précédentes, dans lequel la proportion des boulettes de fibres est de 50 à 95 % en poids, de préférence de 60 à 95 %, notamment de 70 à 90 %, et/ou dans lequel la proportion des fibres de liaison dans le non-tissé volumineux est de 5 à 40 % en poids, de préférence de 7 à 30 % en poids et de manière particulièrement préférée de 10 à 25 % en poids, à chaque fois par rapport au poids total de la matière première de non-tissé.
- Procédé selon au moins l'une quelconque des revendications précédentes, dans lequel les boulettes de fibres contiennent ou sont constituées par des fibres qui sont choisies parmi les polymères synthétiques, notamment les fibres de polyester, notamment de polyéthylène téréphtalate, de polyéthylène naphtalate et de polybutylène téréphtalate ; et les fibres naturelles, notamment les fibres de laine, de coton ou de soie, et/ou leurs mélanges et/ou des mélanges avec d'autres fibres.
- Procédé selon au moins l'une quelconque des revendications précédentes, dans lequel les fibres de liaison sont configurées sous la forme de fibres noyau/enveloppe, l'enveloppe comprenant du polyéthylène, du polypropylène, du polybutylène téréphtalate, du polyamide, des copolyamides ou des copolyesters, et/ou le noyau comprenant du polyéthylène téréphtalate, du polyéthylène naphtalate, des polyoléfines, telles que le polyéthylène ou le polypropylène, du polysulfure de phénylène, des polyamides aromatiques et/ou des polyesters.
- Procédé selon au moins l'une quelconque des revendications précédentes, dans lequel la matière première de non-tissé contient au moins un composant supplémentaire, choisi parmi d'autres fibres, d'autres matériaux volumineux et d'autres additifs fonctionnels.
- Procédé selon au moins l'une quelconque des revendications précédentes, dans lequel la densité du non-tissé volumineux est au moins 5 %, de préférence au moins 10 %, de manière encore davantage préférée au moins 25 % plus faible que la densité des boulettes de non-tissé utilisées à l'étape (a).
- Procédé de fabrication d'un matériau textile, comprenant la fabrication d'un non-tissé volumineux par un procédé selon l'une quelconque des revendications précédentes, et la transformation en le matériau textile, le matériau textile étant notamment choisi parmi les vêtements, les matériaux moulés, les matériaux de rembourrage, les matériaux de remplissage, les matériaux de literie, les mats de filtration, les mats d'absorption, les textiles de nettoyage, les séparateurs, les substituts de mousse, les pansements et les matériaux de protection contre les incendies.
- Non-tissé volumineux, pouvant être obtenu par un procédé selon au moins l'une quelconque des revendications précédentes.
- Non-tissé volumineux selon la revendication 9, qui présente une densité dans la plage allant de 1 à 20 g/l, notamment de 2 à 15 g/l, de manière particulièrement préférée de 3 à 10 g/l, la densité étant de manière particulièrement préférée inférieure à 10 g/l.
- Non-tissé volumineux selon au moins l'une quelconque des revendications précédentes, qui présente au moins une des propriétés suivantes :- une force de traction maximale d'au moins 2 N/5 cm, mesurée selon DIN EN 29 073-3,- un allongement à la force de traction maximale d'au moins 20 %, mesuré selon DIN EN 29 073-3,- une résistance à la transmission de chaleur RCT d'au moins 0,20 Km2/W, et- une récupération d'au moins 70 %, calculée selon le procédé comprenant les étapes (1) à (8) tel qu'indiqué dans la description.
- Non-tissé volumineux selon au moins l'une quelconque des revendications précédentes, qui présente les propriétés suivantes :- un quotient force de traction maximale [N/5 cm]/épaisseur [mm] d'au moins 0,10 [N/(5 cm*mm)] et/ou- un quotient force de traction maximale [N/5 cm]/poids superficiel [g/m2] d'au moins 0,020 [N*m2/(5 cm*g)] et/ou- un quotient résistance à la transmission de chaleur RCT [Km2/W]/épaisseur [mm] d'au moins 0,010 [Km2/ (W*mm)],et/ou qui présente les propriétés suivantes :- une densité inférieure à 10 g/l et- une force de traction maximale d'au moins 2 N/5 cm, et- une résistance à la transmission de chaleur RCT d'au moins 0,20 Km2/W,- et éventuellement un quotient résistance à la transmission de chaleur RCT [Km2/W]/épaisseur [mm] d'au moins 0,010,et/ou qui présente les propriétés suivantes :- une force de traction maximale d'au moins 4 N/5 cm, mesurée selon DIN EN 29 073-3,- une densité inférieure ou égale à 10 g/l, et- un quotient force de traction maximale [N/5 cm]/épaisseur [mm] d'au moins 0,10 [N/(5 cm*mm)], de préférence d'au moins 0,15 [N/(5 cm*mm)].
- Non-tissé volumineux constitué par des boulettes de fibres et des fibres de liaison, dans lequel des fibres ou des faisceaux de fibres sont extraits des boulettes de fibres, le non-tissé volumineux est consolidé thermiquement et présente une densité dans la plage allant de 1 à 20 g/l.
- Matériau textile, contenant un non-tissé volumineux selon au moins l'une quelconque des revendications 9 à 13, dans lequel le matériau textile est notamment choisi parmi les vêtements, les matériaux moulés, les matériaux de rembourrage, les matériaux de remplissage, les matériaux de literie, les mats de filtration, les mats d'absorption, les textiles de nettoyage, les séparateurs, les substituts de mousse, les pansements et les matériaux de protection contre les incendies.
- Utilisation d'un non-tissé volumineux selon au moins l'une quelconque des revendications 9 à 13 pour la fabrication d'un matériau textile, le matériau textile étant notamment choisi parmi les vêtements, les matériaux moulés, les matériaux de rembourrage, les matériaux de remplissage, les matériaux de literie, les mats de filtration, les mats d'absorption, les textiles de nettoyage, les séparateurs, les substituts de mousse, les pansements et les matériaux de protection contre les incendies.
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WO2017102760A1 (fr) * | 2015-12-14 | 2017-06-22 | F. Hoffmann-La Roche Ag | Dispositif d'administration médical |
DE102019133239A1 (de) * | 2019-12-05 | 2021-06-10 | Carl Freudenberg Kg | Artikel zur mechanischen Wundreinigung |
RU198724U1 (ru) * | 2020-02-26 | 2020-07-23 | Общество с Ограниченной Ответственностью "Фабрика Нетканых Материалов "Весь Мир" | Нетканый многослойный материал для матраса |
KR102124148B1 (ko) * | 2020-04-08 | 2020-06-18 | 최현수 | 난연성 부직포 및 그 제조방법 |
US11641960B2 (en) * | 2020-05-05 | 2023-05-09 | Mlilyusa, Inc | Cooling bedding product |
EP4124684B1 (fr) | 2021-07-26 | 2024-04-03 | Carl Freudenberg KG | Rembourrage en boules de fibres avec différentes formes de boules de fibres pour assurer une meilleure isolation |
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JP2018530680A (ja) | 2018-10-18 |
CN107923091B (zh) | 2021-02-26 |
CA2993887A1 (fr) | 2017-02-23 |
JP6571271B2 (ja) | 2019-09-04 |
TWI610004B (zh) | 2018-01-01 |
EP3133196A1 (fr) | 2017-02-22 |
CA2993887C (fr) | 2020-10-06 |
TW201713817A (zh) | 2017-04-16 |
KR20180019735A (ko) | 2018-02-26 |
DK3164535T3 (en) | 2018-10-15 |
EP3133196B1 (fr) | 2020-10-14 |
US20180230630A1 (en) | 2018-08-16 |
PL3164535T3 (pl) | 2019-03-29 |
KR102035803B1 (ko) | 2019-10-23 |
WO2017029191A1 (fr) | 2017-02-23 |
US10876234B2 (en) | 2020-12-29 |
DE202016008648U1 (de) | 2018-10-25 |
EP3164535A1 (fr) | 2017-05-10 |
CN107923091A (zh) | 2018-04-17 |
ES2689082T3 (es) | 2018-11-08 |
RU2673762C1 (ru) | 2018-11-29 |
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