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Publication numberUS20050233665 A1
Publication typeApplication
Application numberUS 11/145,695
Publication dateOct 20, 2005
Filing dateJun 6, 2005
Priority dateMar 7, 2000
Also published asDE10011053A1, DE10011053C2, EP1263306A2, US20030153224, WO2001066844A2, WO2001066844A3
Publication number11145695, 145695, US 2005/0233665 A1, US 2005/233665 A1, US 20050233665 A1, US 20050233665A1, US 2005233665 A1, US 2005233665A1, US-A1-20050233665, US-A1-2005233665, US2005/0233665A1, US2005/233665A1, US20050233665 A1, US20050233665A1, US2005233665 A1, US2005233665A1
InventorsRobert Groten, Linda Mooshian, Georges Riboulet
Original AssigneeCarl Freudenberg Kg
Export CitationBiBTeX, EndNote, RefMan
External Links: USPTO, USPTO Assignment, Espacenet
Light-protective textile
US 20050233665 A1
Abstract
The present invention relates to a textile light-protective material composed of a microfilament non-woven fabric having a mass per unit area of 20 to 300 g/m2, in which the non-woven fabric is made of melt-spun and drawn multicomponent continuous filaments having a titer of 1.5 to 5 dtex that are deposited immediately to form a non-woven material and at least 80% of the multicomponent continuous filaments, after an optional pre-bonding, are split to form continuous microfilaments having a titer of 0.05 to 2.0 dtex and are bonded.
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Claims(18)
1-11. (canceled)
12. A textile light-protective material comprising:
a microfilament non-woven fabric having a mass per unit area of 20 to 300 g/m2, the non-woven fabric including multicomponent continuous filaments, the filaments being melt-spun and drawn filaments having an original titer of 1.5 to 5 dtex deposited immediately to form a non-woven material;
the multicomponent continuous filaments of the non-woven material being split continuous microfilaments having a titer of 0.05 to 2.0 dtex and being bonded, a degree of splitting of the multicomponent continuous filaments being greater than 80%.
13. The textile light-protective material of claim 12 wherein the multi-component continuous filaments are pre-bonded filaments.
14. The textile light-protective material as recited in claim 12 wherein the original titer is 1.5 to 3 dtex and the titer of the split continuous microfilaments is 0.1 to 1.0 dtex.
15. The textile light-protective material as recited in claim 12 wherein the multicomponent continuous filament is a bicomponent continuous filament consisting of two incompatible polymers.
16. The textile light-protective material as recited in claim 15 wherein the two incompatible polymers are a polyester and a polyamide.
17. The textile light-protective material as recited in claim 12 wherein the multicomponent continuous filaments have a cross section of an orange-like multisegment structure, each segment in alternating fashion containing one of the two incompatible polymers and/or possessing a “side-by-side” structure.
18. The textile light-protective material as recited in claim 12 wherein the multicomponent continuous filament includes at least two incompatible polymers, and wherein at least one of the incompatible polymers contains an additive in quantities up to 10% wt.
19. The textile light-protective material as recited in claim 18 wherein the additive is at least one of a coloring pigment, a permanently acting antistatic agent, and a hydrophilic or hydrophobic-altering agent.
20. A method for manufacturing a textile light-protective material having a microfilament non-woven fabric with a mass per unit area of 20 to 300 g/m2, comprising the steps of:
spinning and drawing a melted mass to form multicomponent continuous filaments having a titer of 1.5 to 5 dtex;
depositing immediately the multicomponent continuous filaments to form a non-woven material; and
bonding the non-woven material using high-pressure fluid jets and simultaneously splitting the multicomponent continuous filaments into continuous microfilaments having a titer of 0.05 to 2.0 dtex, a degree of splitting of the multicomponent continuous filaments being greater than 80%.
21. The method as recited in claim 20 wherein the non-woven material is pre-bonded before the bonding and step.
22. The method as recited in claim 20 wherein bonding step includes subjecting two sides of the non-woven material to the high-pressure fluid jets.
23. The method as recited in claim 20 further comprising spin dyeing the multicomponent continuous filaments.
24. The method as recited in claim 20 further comprising point-calendering the textile light-protective material.
25. The method as recited in claim 20 further comprising manufacturing a curtain, drape, or rolling blind from the light-protective material.
26. The method as recited in claim 20 further comprising manufacturing a vertical jalousie or a pleated blind from the light-protective material.
27. The textile light-protective material as recited in claim 12 wherein the material is part of a curtain, drape, or rolling blind.
28. The textile light-protective material as recited in claim 12 wherein the material is part of a vertical jalousie or a pleated blind.
Description
  • [0001]
    The present invention relates to a textile light-protective material for windows, composed of a micro filament non-woven fabric having a mass per unit area of 20 to 300 g/m2.
  • [0002]
    Camouflage and light-protective devices for windows are provided in a variety of specific embodiments. In principle, the distinction should be made between soft and hard materials for this purpose. Curtains, drapes, or roller blinds are made of soft textile materials, and vertical or horizontal jalousies and pleated blinds are made of hard materials. Appropriate textile light-protective devices are also used for screening excessive light radiation, for example, in winter gardens. From the document, U.S. Pat. No. 5,436,064, stiff textile composites are known which are made of a non-woven fabric composed of thermoplastic material and a woven fabric that is assembled, stitched, and fused together by heating. Furthermore, from the document, U.S. Pat. No. 5,600,974, stiff textile composites are known which are made of non-woven fabrics that are embroidered using yarn in a weaving frame. In this context, the non-woven fabric is made of two different fibers, of which one is thermoplastic and is melted on after the yarn embroidery. The known textile composites can also be provided with a foamed plastic layer and are suitable for manufacturing vertical jalousies, pleated blinds, wall panels, or automobile interior coverings.
  • [0003]
    The known textile light-protective materials have disadvantages with regard to the high use of material, insufficient screening of the impinging light especially in the UV range, or their resistance to light. In addition, a rational manufacturing method is desirable.
  • [0004]
    The present invention has the objective of indicating a textile light-protective material as well as a method for manufacturing it.
  • [0005]
    According to the present invention, the objective is achieved by a textile light-protective material that is made of a microfilament non-woven fabric having a mass per unit area of 20 to 300 g/m2, the non-woven fabric being composed of melt-spun and drawn multicomponent continuous filaments having a titer of 1.5 to 5 dtex that are deposited immediately to form a non-woven material, and at least 80% of the multicomponent continuous filaments are, after an optional pre-bonding, split to form continuous microfilaments having a titer of 0.05 to 2.0 dtex and are bonded. The isotropic fiber distribution in the non-woven fabric makes it unnecessary to hem it and to take into account the machine running direction. As a result of the continuous filaments, the textile light-protective material has no unraveled fibers. A chemical finishing is not necessary.
  • [0006]
    The textile light-protective material is advantageously one in which the non-woven fabric having a mass per unit area of 20 to 300 g/m2 is made of melt-spun and aerodynamically drawn multicomponent continuous filaments having a titer of 1.5 to 3 dtex that have been immediately deposited to form a non-woven material, and at least 80% of the multicomponent continuous filaments are split to form continuous microfilaments having a titer of 0.1 to 1.0 dtex and are bonded.
  • [0007]
    The textile light-protective material is advantageously one in which the multicomponent continuous filament is a bicomponent continuous filament made of two incompatible polymers, specifically a polyester and a polyamide. A bicomponent continuous filament of this type has a good capacity for splitting into continuous microfilaments, and it produces a favorable ratio of strength to mass per unit area. At the same time, the textile light-protective material according to the present invention, due to the polymers that are used and their filament structure, is wrinkle-free, easily washable, and fast drying, i.e., easy to maintain.
  • [0008]
    The textile light-protective material is advantageously one in which the multicomponent continuous filaments have a cross section marked by an orange-like multisegment structure, also termed “pie,” each segment in alternating fashion containing one of the two incompatible polymers. In addition to this orange-like multi-segment structure of the multicomponent continuous filaments, a “side-by-side” (s/s) segment arrangement of the incompatible polymers in the multicomponent continuous filament is also possible, which is advantageously used for producing crimped filaments. Segment arrangements of this type of the incompatible polymers in the multicomponent continuous filament have proven to be easy to split. The textile light-protective material has a very favorable ratio of mass per unit area to UV-light absorption capacity, so that highly effective light-protective materials can be manufactured therefrom even when small amounts of material are used.
  • [0009]
    The textile light-protective material is also advantageously one in which at least one of the incompatible polymers forming the multicomponent continuous filament contains an additive, such as coloring pigments and/or permanently acting antistatic agents, in quantities up to 10% wt. As a result of the additives, static charges can be reduced or avoided. The textile light-protective material, in particular when used as curtains or drapes, has excellent maintenance properties with regard to its excellent washability and short drying times.
  • [0010]
    The method according to the present invention for manufacturing a textile light-protective material is seen in that multicomponent continuous filaments are spun from the melted mass, are drawn, and are deposited immediately to form a non-woven material, a pre-bonding is carried out, and the non-woven fabric is bonded by high-pressure fluid jets as it is simultaneously split into continuous microfilaments having a titer of 0.05 to 2.0 dtex. The textile light-protective material that is obtained in this manner is very uniform with regard to its thickness, has an isotropic fiber distribution, has no tendency to delaminate, and is marked by high modular values.
  • [0011]
    The method for manufacturing the textile light-protective material is advantageously carried out such that the bonding and the splitting of the multicomponent continuous filaments is accomplished by subjecting the non-woven fabric, which has been optionally pre-bonded, to high-pressure water jets at least once on each side. As a result, the textile light-protective material has an excellent surface and a degree of splitting of the multicomponent continuous filaments that is greater than 80%.
  • [0012]
    The textile light-protective material according to the present invention is also advantageously subjected to a point calendering to increase its wear resistance. For this purpose, the split and bonded non-woven fabric is conveyed through heated rollers, of which at least one roller has elevations, which result in a pointwise melting of the filaments to each other.
  • [0013]
    The textile light-protective material, due to its excellent haptic properties, is used for manufacturing curtains, drapes, or rolling blinds. In this context, in the water-jet bonding of the multifilament non-woven fabric, it is possible to carry out a surface patterning, or pattern forming, through the selection of the substrate.
  • [0014]
    The textile light-protective material is also advantageously used for manufacturing vertical jalousies or pleated blinds, it being possible to increase the stiffness of the material by a stamp-calendering, by the fusing-on of a polymer component, and/or by coating using a foamed plastic.
  • EXAMPLE 1
  • [0015]
    From an s/s polyester-polyamide (PES-PA6.6) bicomponent continuous filament having a weight ratio of PES to PA6.6 of 60:40, a fiber web having a mass per unit area of 134 g/m2 is produced and is subjected to a water-jet needling on both sides at pressures up to 230 bar. The bicomponent continuous filaments, after the water-jet needling, which results in a simultaneous splitting of the initial fibers, have a titer <1.5 dtex and a thickness of 0.51 mm. For the tear resistance, 372 N were measured in the machine running direction, and 331 N were measured in the transverse direction. After irradiation on a black wall using a xenon test lamp 150 S at a light energy of 152 W/m2 over 150 hours at a relative humidity of 45% and a temperature of 90 degrees C., the change was ascertained through a comparison using 6 blue tones. The sample was evaluated as >7 on a scale extending from 4 to 7.
  • EXAMPLE 2
  • [0016]
    From a 16-segment (PIE) polyester-polyamide (PES-PA6.6) bicomponent continuous filament having a weight ratio of PES to PA6.6 of 70:30, a fiber web having a mass per unit area of 116 g/m2 is produced and is subjected to a water-jet needling on both sides at pressures up to 230 bar. The bicomponent continuous filaments, after the water-jet needling, which results in a simultaneous splitting of the initial fibers, have a titer <0.1 dtex and a thickness of 0.51 mm. For the tear resistance, 383 N were measured in the machine running direction, and 324 N were measured in the transverse direction. After irradiation on a black wall using a xenon test lamp 150 S at a light energy of 152 W/m2 over 150 hours at a relative humidity of 45% and a temperature of 90 degrees C., the change was ascertained through a comparison using 6 blue tones. The sample was evaluated as >7 on a scale extending from 4 to 7.
  • EXAMPLE 3
  • [0017]
    (OP-370) 7
  • EXAMPLE 4
  • [0018]
    (OP-465) ≧7
  • EXAMPLE 5
  • [0019]
    (OP-464) 7
  • EXAMPLE 6
  • [0020]
    (OP-690) 7
  • EXAMPLE 7
  • [0021]
    From a polyethylene terephthalate polyamide (PET-PA) bicomponent continuous filament having a weight ratio of PET/PA66 in the elementary fiber of 70/30 and an additive of X % wt of titanium dioxide, a fiber web having a mass per unit area of 80 g/m2 is produced and is subjected to a water-jet needling on both sides at pressures up to 230 bar. The bicomponent continuous filaments, after the water-jet needling, which results in a simultaneous splitting of the initial fibers, have a titer of 0.1 to 0.8 dtex. The textile light-protective material has UV protection of 50+, as determined in accordance with the Australian-New Zealand Standard AS/NZS 4399:1996. In this context, the transmission is measured in percent in a range from 250 to 450 nm.
Patent Citations
Cited PatentFiling datePublication dateApplicantTitle
US5899785 *Jun 17, 1997May 4, 1999Firma Carl FreudenbergNonwoven lap formed of very fine continuous filaments
US5965084 *Apr 1, 1998Oct 12, 1999Chisso CorporationProcess for producing non-woven fabrics of ultrafine polyolefin fibers
US6200669 *Nov 26, 1996Mar 13, 2001Kimberly-Clark Worldwide, Inc.Entangled nonwoven fabrics and methods for forming the same
Referenced by
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US7309372 *Nov 1, 2006Dec 18, 2007Donaldson Company, Inc.Filter medium and structure
US7314497 *Nov 4, 2005Jan 1, 2008Donaldson Company, Inc.Filter medium and structure
US7985344Nov 20, 2007Jul 26, 2011Donaldson Company, Inc.High strength, high capacity filter media and structure
US8021455Sep 20, 2011Donaldson Company, Inc.Filter element and method
US8021457Nov 5, 2004Sep 20, 2011Donaldson Company, Inc.Filter media and structure
US8057567Nov 15, 2011Donaldson Company, Inc.Filter medium and breather filter structure
US8177875Jan 31, 2006May 15, 2012Donaldson Company, Inc.Aerosol separator; and method
US8267681Sep 18, 2012Donaldson Company, Inc.Method and apparatus for forming a fibrous media
US8268033May 18, 2011Sep 18, 2012Donaldson Company, Inc.Filter medium and structure
US8277529Oct 2, 2012Donaldson Company, Inc.Filter medium and breather filter structure
US8404014Feb 21, 2006Mar 26, 2013Donaldson Company, Inc.Aerosol separator
US8460424May 1, 2012Jun 11, 2013Donaldson Company, Inc.Aerosol separator; and method
US8512435Aug 22, 2012Aug 20, 2013Donaldson Company, Inc.Filter medium and breather filter structure
US8524041Aug 20, 2012Sep 3, 2013Donaldson Company, Inc.Method for forming a fibrous media
US8641796Sep 14, 2012Feb 4, 2014Donaldson Company, Inc.Filter medium and breather filter structure
US8721756Sep 14, 2012May 13, 2014Donaldson Company, Inc.Filter construction for use with air in-take for gas turbine and methods
US9114339Sep 14, 2012Aug 25, 2015Donaldson Company, Inc.Formed filter element
US20150017401 *Feb 12, 2013Jan 15, 2015Carl Freudenberg KgTextile light-protection material
Classifications
U.S. Classification442/340, 442/361, 442/347, 442/362, 442/401
International ClassificationD04H3/011, D04H3/016, D04H3/11, D04H3/009, D04H3/12, A47H23/08, D04H3/16
Cooperative ClassificationY10T442/637, D04H3/12, Y10T442/638, Y10T442/614, D04H3/16, D04H3/016, Y10T442/68, D04H3/009, Y10T442/622, D04H3/011, Y10T442/681, Y10T442/20, Y10T442/60, A47H23/08, D04H3/11
European ClassificationD04H3/009, D04H3/011, D04H3/016, D04H3/11, D04H3/12, D04H3/16, A47H23/08