EP3274494B1 - Blowable natural down alternative - Google Patents

Blowable natural down alternative Download PDF

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Publication number
EP3274494B1
EP3274494B1 EP16718050.4A EP16718050A EP3274494B1 EP 3274494 B1 EP3274494 B1 EP 3274494B1 EP 16718050 A EP16718050 A EP 16718050A EP 3274494 B1 EP3274494 B1 EP 3274494B1
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EP
European Patent Office
Prior art keywords
polyester staple
staple fibers
denier
blend
fibers
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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.)
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Application number
EP16718050.4A
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German (de)
English (en)
French (fr)
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EP3274494A1 (en
Inventor
Rebeccah K. ROSSBACH
Scott J. Tuman
Michael R. Berrigan
Brian L. Nelson
Kenneth A. Cox
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3M Innovative Properties Co
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3M Innovative Properties Co
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Publication of EP3274494A1 publication Critical patent/EP3274494A1/en
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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
    • 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
    • D04H1/4326—Condensation or reaction polymers
    • D04H1/435—Polyesters
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B68—SADDLERY; UPHOLSTERY
    • B68G—METHODS, EQUIPMENT, OR MACHINES FOR USE IN UPHOLSTERING; UPHOLSTERY NOT OTHERWISE PROVIDED FOR
    • B68G7/00—Making upholstery
    • B68G7/06—Filling of cushions, mattresses, or the like
    • 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
    • D04H1/4391—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 characterised by the shape of the 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
    • D04H1/40—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
    • D04H1/4391—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 characterised by the shape of the fibres
    • D04H1/43914—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 characterised by the shape of the fibres hollow 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
    • D04H1/40—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
    • D04H1/4391—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 characterised by the shape of the fibres
    • D04H1/43918—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 characterised by the shape of the fibres nonlinear fibres, e.g. crimped or coiled 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
    • D04H1/40—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties
    • D04H1/44—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties the fleeces or layers being consolidated by mechanical means, e.g. by rolling
    • D04H1/50—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties the fleeces or layers being consolidated by mechanical means, e.g. by rolling by treatment to produce shrinking, swelling, crimping or curling 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
    • 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
    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06M—TREATMENT, NOT PROVIDED FOR ELSEWHERE IN CLASS D06, OF FIBRES, THREADS, YARNS, FABRICS, FEATHERS OR FIBROUS GOODS MADE FROM SUCH MATERIALS
    • D06M11/00—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with inorganic substances or complexes thereof; Such treatment combined with mechanical treatment, e.g. mercerising
    • D06M11/77—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with inorganic substances or complexes thereof; Such treatment combined with mechanical treatment, e.g. mercerising with silicon or compounds thereof
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B68—SADDLERY; UPHOLSTERY
    • B68G—METHODS, EQUIPMENT, OR MACHINES FOR USE IN UPHOLSTERING; UPHOLSTERY NOT OTHERWISE PROVIDED FOR
    • B68G1/00—Loose filling materials for upholstery
    • B68G2001/005—Loose filling materials for upholstery for pillows or duvets
    • D—TEXTILES; PAPER
    • D10—INDEXING SCHEME ASSOCIATED WITH SUBLASSES OF SECTION D, RELATING TO TEXTILES
    • D10B—INDEXING SCHEME ASSOCIATED WITH SUBLASSES OF SECTION D, RELATING TO TEXTILES
    • D10B2331/00—Fibres made from polymers obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds, e.g. polycondensation products
    • D10B2331/04—Fibres made from polymers obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds, e.g. polycondensation products polyesters, e.g. polyethylene terephthalate [PET]
    • D—TEXTILES; PAPER
    • D10—INDEXING SCHEME ASSOCIATED WITH SUBLASSES OF SECTION D, RELATING TO TEXTILES
    • D10B—INDEXING SCHEME ASSOCIATED WITH SUBLASSES OF SECTION D, RELATING TO TEXTILES
    • D10B2501/00—Wearing apparel
    • D10B2501/04—Outerwear; Protective garments
    • D—TEXTILES; PAPER
    • D10—INDEXING SCHEME ASSOCIATED WITH SUBLASSES OF SECTION D, RELATING TO TEXTILES
    • D10B—INDEXING SCHEME ASSOCIATED WITH SUBLASSES OF SECTION D, RELATING TO TEXTILES
    • D10B2503/00—Domestic or personal
    • D10B2503/06—Bed linen

Definitions

  • the present disclosure relates to natural down-like insulation fill materials. More particularly, it relates to a blowable synthetic material comparable to natural down in various performance attributes, methods for manufacturing the same, and articles incorporating the synthetic material as an insulation filler.
  • Natural feather down has found wide acceptance for thermal insulation applications, primarily because of its outstanding thermal weight efficiency, softness, and resiliency. Properly fluffed and contained within an article or garment, natural down is generally recognized as an insulation material of choice. However, natural down compacts and loses its insulating properties when it becomes wet and can exude a rather unpleasant odor when exposed to moisture. Moreover, the cost of natural down has increased dramatically over the past several years.
  • 4,588,635 and 4,992,327 may exhibit warmth per weight properties akin to natural down, but are not easily incorporated as a replacement to down and are not blowable (i.e., cannot be acceptably handled or transported by conventional blowing equipment).
  • other synthetic-based insulation materials appropriate for garments and the like purport to be blowable, but do not necessarily compare to natural down in terms of at least warmth and/or compression recovery (e.g., the materials described in U.S. Patent Nos. 6,329,052 and 7,682,693 ).
  • the polyester staple fiber blend includes a plurality of first polyester staple fibers, a plurality of second polyester staple fibers, and a plurality of third polyester staple fibers.
  • An average Denier of each of the second polyester staple fibers is greater than an average Denier of each of the first polyester staple fibers.
  • An average Denier of each of the third polyester staple fibers is greater than an average Denier of each of the second polyester staple fibers.
  • a length of substantially all the fibers of the blend is in the range of 16 - 63 mm, alternatively in the range of 20 - 40 mm. Additionally, at least a majority, optionally substantially all, of the fibers of the blend are opened. In some embodiments, some or substantially all of the fibers of the blend are crimped; in other embodiments, some or substantially all of the fibers of the blend include a lubricant (e.g., are siliconized).
  • the blend of polyester staple fibers includes 20 - 30 weight percent of not greater than about 1 Denier polyester staple fibers, 20 - 30 weight percent of greater than about 1 up to about 2 Denier polyester staple fibers, and 40 - 60 weight percent of greater than about 2 Denier polyester staple fibers, with substantially all of the fibers of the blend each having a length in the range of 20 - 40 mm.
  • the polyester staple fiber blends of the present disclosure are blowable and may exhibit superior performance in terms of warmth, compression/recovery, and wash durability.
  • an insulation material comprised of a blend or mixture of polyester staple fibers.
  • the blend includes three different polyester staple fiber formats or types.
  • the blend is blowable (e.g., the fibers of the blend are collectively loose filled or opened) and exhibits warmth or heat transfer resistance characteristics comparable to natural down.
  • the blowable insulation material of the present disclosure is comprised essentially of the blend of polyester staple fibers, and may exhibit superior performance in terms of warmth (e.g., warmth per thickness (or thermal resistivity), and/or warmth per basis weight (or thermal weight efficiency)), compression/recovery, and/or wash durability.
  • the fibers of the polyester staple fiber blends of the present disclosure are selected from one of three polyester staple fiber formats or types.
  • the fiber formats or types are referred to as Fiber Format A, Fiber Format B, and Fiber Format C. While the fibers of the three Fiber Formats can have similarities (e.g., base polymer composition and length), Fiber Format A, Fiber Format B, and Fiber Format C differ from one another at least in terms of average Denier as described in greater detail below.
  • all of the polyester staple fibers of the blend can be single component in nature, formed from a similar or identical polyester material such as, but not limited to: polyethylene terephthalate (PET).
  • PET polyethylene terephthalate
  • the fibers of each of the three Fiber Formats are PET.
  • the fibers of one of the Fiber Format can have a polyester formulation differing from the polyester formulation of the other Fiber Formats.
  • the fibers may include other synthetic fibers, including, but not limited to, polymers or combinations of: polyesters, polyamides, polyolefins, polyacrylates, and polyaramids.
  • substantially all (e.g., at least 95%, optionally at least 98%, optionally at least 99%) of the polyester staple fibers of the blend are cut to a length in the range of 16 - 63 mm, optionally in the range of 20 - 40 mm, optionally on the order of 32 mm. It has been surprisingly found that the fiber lengths of the present disclosure beneficially render the blend of polyester stable fibers, and thus the insulation materials of the present disclosure, conducive to handling or distribution by conventional blowing equipment.
  • An additional, optional similarity of the fibers comprising the polyester staple fiber blend (and thus the fibers of Fiber Formats A, B and C) relates to crimping.
  • a majority, optionally substantially all (e.g., at least 95%, optionally at least 98%, optionally at least 99%), of the polyester staple fibers of the blend (and thus a majority or substantially all of the fibers of Fiber Formats A, B or C comprising the blend) are crimped (e.g., two-dimensional mechanical crimp, spiral crimp, etc.), for example having 1 - 10 crimps/cm.
  • substantially all of the fibers of at least one of the Fiber Formats comprising the polyester staple fiber blend are crimped fibers, whereas a majority or substantially all of the fibers of another Fiber Format comprising the polyester staple fiber blend are not crimped. In yet other embodiments, substantially all of the fibers of the polyester staple fiber blend are not crimped.
  • An additional, optional similarity of the fibers comprising the polyester staple fiber blend (and thus the fibers of Fiber Formats A, B and C) relates to lubricants, and in particular the addition of a lubricant or slickening agent (e.g., a silicone slickener, aqueous solutions of organopolysiloxanes, emulsions of polytetrafluoroethylene, non-ionic surfactants, etc.) for water resistance, improved feel and/or handling, and antistatic properties.
  • a lubricant or slickening agent e.g., a silicone slickener, aqueous solutions of organopolysiloxanes, emulsions of polytetrafluoroethylene, non-ionic surfactants, etc.
  • the lubricant can be applied (e.g., spray coated) on to an exterior surface of the polyester staple fibers, or can be added to the polyester material during formation of the corresponding fibers (e.
  • a majority, optionally substantially all (e.g., at least 95%, optionally at least 98%, optionally at least 99%), of the polyester staple fibers of the blend include a lubricant (e.g., are siliconized polyester fibers).
  • substantially all of the fibers of at least one of the Fiber Formats comprising the polyester staple fiber blend include a lubricant, whereas a majority or substantially all of the fibers of another Fiber Format comprising the polyester staple fiber blend do not include a lubricant.
  • substantially all of the fibers of the polyester staple fiber blend do not include a lubricant.
  • the fibers of Fiber Formats A, B and C differ from one another at least in terms of average Denier or cross-dimensional size.
  • the polyester staple fibers of Fiber Format A have a Denier of not greater than about 1 Denier, optionally a Denier in the range of about 0.5 to not greater than about 1 Denier, optionally on the order of 0.7 Denier.
  • the polyester staple fibers of Fiber Format B have a Denier in the range of greater than about 1 Denier to not greater than about 2 Denier, optionally on the order of 1.4 Denier.
  • the polyester staple fibers of Fiber Format C have a Denier greater than about 2 Denier, optionally in the range of about greater than 2 Denier to 7 Denier, optionally on the order of 3 Denier.
  • An additional, optional difference between the fibers of at least one of the Fiber Formats relates to structure.
  • some of the fibers comprising the polyester staple fiber blend can be solid, whereas others of the fibers comprising the polyester staple fiber blend can be hollow or tubular.
  • a majority, optionally substantially all e.g., at least 95%, optionally at least 98%, optionally at least 99%
  • a majority, optionally substantially all e.g., at least 95%, optionally at least 98%, optionally at least 99%
  • some polyester staple fiber blends in accordance with principles of the present disclosure consist include fibers of Fiber Format A and Fiber Format B is solid form, and fibers of Fiber Format C in hollow form.
  • substantially all of the fibers of the blend are hollow regardless of Fiber Format; in yet other embodiments, substantially all of the fibers of the blend are solid regardless of Fiber Format.
  • Fibers can be circular or other shapes in cross sections such as triangular.
  • the polyester staple fiber blends of the present disclosure comprise, optionally consist essentially of, fibers from Fiber Formats A, B, and C.
  • the polyester staple fiber blends of the present disclosure are comprised of 20-30 weight percent of Fiber Format A, 40 - 60 weight percent of Fiber Format B, and 40 - 60 weight percent of Fiber Format C.
  • the polyester staple fiber blends of the present disclosure can be characterized as loose fill, with at least a majority of the fibers comprising the blend being opened (as commonly understood to those of ordinary skill in the art). That is to say, at least a majority, alternatively at least about 70%, and in other optional embodiments substantially all (e.g. at least 95%, alternatively at least 98%, alternatively at least 99%), of the fibers comprising the blend are separated, individualized and unbonded relative to one another.
  • the "opening" of the fibers of the polyester staple fiber blend means that the fibers are worked upon such that the individual fibers of the blend are separated from each other and are not clustered. Opening of the fibers of the staple fiber blend can be accomplished by various methods known in the art as described in greater detail below.
  • the insulation materials of the present disclosure consist substantially, alternatively solely, of the polyester staple fiber blend as described above.
  • the insulation materials can include one or more components in addition to the polyester staple fiber blend, such as other synthetic fibers, natural fibers, natural down, and fiber clusters.
  • additives envisioned by the present disclosure include benefitting additives such as chopped sponge, anti-microbials, abrasives, odor absorbing particulate, adhesive/binder particulate (e.g., heat activatable, moisture transporting particulate, heat conducting particulate (e.g., inorganic, metallic, crushed gemstones), radiation blocking (UV/visible/IR), detergent/soap, wetting agents, microencapsulants (phase change materials, fragrance, essential oils, etc.), flame retardants, etc.
  • benefitting additives such as chopped sponge, anti-microbials, abrasives, odor absorbing particulate, adhesive/binder particulate (e.g., heat activatable, moisture transporting particulate, heat conducting particulate (e.g., inorganic, metallic, crushed gemstones), radiation blocking (UV/visible/IR), detergent/soap, wetting agents, microencapsulants (phase change materials, fragrance, essential oils, etc.), flame retardants, etc.
  • FIG. 1 is a simplified view of a portion of an article 10 in accordance with principles of the present disclosure.
  • the article 10 can assume a variety of forms, such as apparel including outerwear and accessories (e.g., jackets, stocking caps, gloves, etc.), sleeping bag, bedding articles (comforters, pillows, quilts, bedspreads, etc.), and generally includes a quantity or volume of the blend of polyester staple fibers 12 as described above contained within a pocket 14 formed by an outer shell or liner 16 (e.g., fabric, film, etc.).
  • construction of the article 10 includes dispensing or filling the blend of polyester staple fibers 12 into the pocket 14 with a conventional blowing device (i.e., the blend of polyester staple fibers 12 is delivered into the pocket 14 via a forced airstream).
  • polyester staple fiber blends described above.
  • desired quantities of fibers of Fiber Format A, Fiber Format B and Fiber Format C, in accordance with the weight percent selected for the resultant blend are obtained.
  • the polyester fibers can be obtained, for instance, by conventional spinning/drawings or extrusion techniques as known in the art, and can be cut to the lengths described above.
  • the so-obtained fibers may be crimped and may include a lubricant as described above. Regardless, the fibers are then mixed and opened to produce the polyester staple fiber blend of the present disclosure and useful as a blowable insulation material.
  • FIG. 2 One non-limiting example of a system 20 (and corresponding method) for producing the polyester stable fiber blends of the present disclosure is provided in FIG. 2 .
  • Raw polyester staple fibers are received at a loading station 22.
  • the loading station 22 can include three (or more) pre-feeder substations 22a-22c each including a weighing pan (as known in the art), one for each of the Fiber Formats to be included with the resultant blend.
  • FIG. 2 reflects fibers of Fiber Format A being loaded on to the first pre-feeder substation 22a, fibers of Fiber Format B being loaded on to the second pre-feeder substation 22b, and fibers of Fiber Format C being loaded on to the third pre-feeder substation 22c.
  • the raw polyester staple fibers can be supplied in bale form, can be formed substantially in-line with the system 20, etc.
  • a desired quantity of the each of the Fiber Formats A, B and C has been obtained (e.g., based on weight)
  • the quantities are dispensed from the corresponding pre-feeder substation 22a-22c on to a conveyor 24.
  • the conveyor 24 operates to deliver the quantities of fiber to a mixing station 26.
  • the mixing station 26 can assume include various mechanisms appropriate for effectuating mixing of the fibers as known in the art, such as a turbulent airstream.
  • the mixing station 26 can further operated to effectuate coarse opening of the fibers.
  • the mixed blend of polyester staple fibers (identified generally at 28 in FIG. 2 ) is then fed to a fine opening station 30 configured to effectuate more complete or full opening of substantially all of the fibers of the blend.
  • the fine opening station 30 can assume various forms and can incorporate various mechanisms for "working" or opening the fibers, such as rotating or vibrating pins or shafts, compressed air, etc.
  • the systems and methods of the present disclosure can further include additional opening stations downstream of the fine opening station 30 and that utilize other fiber opening techniques.
  • the mixing station 26 alone interfaces with the fibers to sufficiently generate desired openness.
  • the blend of opened polyester staple fibers (referenced generally at 32 in FIG. 2 ) is then fed to one or more gathering stations 34.
  • the gathering station(s) 34 can assume various forms, and in some embodiments each include a chute 36 (or other feeding apparatus) and a carding machine 38 (e.g., a Double Doffer carder).
  • the so-gathered blend of polyester staple fibers is then prepared for delivery to an end user/manufacturer (e.g., packaged or bagged) for use as a blowable insulation fill material.
  • Example Blend A A first example of a polyester staple fibers blend in accordance with principles of the present disclosure was prepared and consisted of: 1) 30 weight percent of crimped, siliconized, solid polyester staple fibers of 0.7 Denier and an average length of 32 mm (e.g., Fiber Format A); 2) 30 weight percent of crimped, solid polyester staple fibers of 1.4 Denier and an average length of 38 mm (e.g., Fiber Format B); 3) 40 weight percent of crimped, siliconized, hollow polyester staple fibers of 3 Denier and an average length of 32 mm (e.g., Fiber Format C).
  • Example Blend B A second example of a polyester staple fibers blend in accordance with principles of the present disclosure was prepared and consisted of: 1) 60 weight percent of crimped, siliconized, solid polyester staple fibers of 0.7 Denier and an average length of 32 mm (e.g., Fiber Format A); 2) 20 weight percent of crimped, siliconized, hollow polyester staple fibers of 3 Denier and an average length of 32 mm (e.g., Fiber Format B); 3) 20 weight percent of crimped, siliconized, hollow polyester staple fibers of 7 Denier and an average length of 32 mm (e.g., Fiber Format C).
  • Alan PE blowing machine includes an inlet or feeding chamber and an outlet or injector reducer. Further, the Alan PE blowing machine provides for variable speeds of operation, and includes a variable speed controller dial with eleven speed setting ("0" being the lowest speed setting, and "10" being the highest). Handful-sized samples (approximately 13 grams of material was divided into 10 handful size samples (1-2 grams each sample)) of Example Blend A were prepared.
  • a first one of the samples was placed in the feeding chamber, and the variable speed controller was set to the highest velocity ("10").
  • the blowing machine was then activated and a manual determination made as to whether or not the sample passed through the machine (e.g., exited the injector reducer) without plugging (e.g., signs of reduced air output, ability to see light through the injector reducer, etc.). If it was determined that the sample passed through without plugging, Example Blend A was designated has having been successfully blown at the particular speed setting; the variable speed controller setting was then reduced by 1 increment, and the steps repeated with a new the samples. If it was determined that plugging occurred, the blowing machine was first cleared of the blockage, and the process repeated three additional times ("trials") at the same speed setting.
  • Example Blend A was designated as being blowable (i.e., successfully blown) at the particular speed setting; the variable speed controller setting was then reduced by 1 increment, and the steps repeated with a new sample. If two consecutive instances of plugging at a particular speed setting were detected, Example Blend A was designated as not blowable (i.e., unsuccessfully blown) at the particular speed setting or at any lower speed settings, and the testing discontinued.
  • Example Blend A is blowable with conventional blowing equipment, and is more readily handled in a moving airstream than 3 Denier x 64 mm polyester staple fibers (that are otherwise considered highly useful as garment insulation material filler).
  • Example Blend A Warmth (heat transfer resistance, in units of Clo) of Example Blend A was measured in accordance with ASTM C518-10 (2010) as described below. The warmth properties of comparative example insulation filling materials were similarly tested.
  • Test specimens were prepared by quilting 200 gsm (grams per meter 2 ) loose material samples of Example Blend A and Comparative Examples 3-11 into approximately 12 inch x 12 inch (30.5 cm x 30.5 cm) panels with approximately 3 inch (7.6 cm) pleat spacing.
  • 12 inch x 12 inch (30.5 cm x 30.5 cm) fabric sheets were obtained from a 104 x 104 thread count 1.9 oz/yd 2 (64.4 gsm) Nylon Ripstop (5 ribs per inch (2.54 cm)) fabric. Two of the fabric sheets were aligned and then sewn to one another along three of the four common edges to provide a panel forming a pocket which was then inverted prior to filling.
  • Comparative Example test specimens using the samples of Comparative Examples 3-11 were prepared by evenly distributing the 200 gsm sample into the pocket, followed by sewing quilt lines across the panel at 3 inch (7.6 cm) increments.
  • a first Example test specimen using a 200 gsm sample of Example Blend A was prepared in an identical manner ("Example A-1").
  • a second Example test specimen using a 200 gsm sample of Example Blend A was prepared by a "channel fill" method in which pre-sewing quilt lines were first formed across the panel at 3 inch (7.6 cm) increments to define four channels; the Example Blend 1 sample (200 gsm) was then filled into each of the so-formed channels (“Example A-2").
  • test specimens were conditioned for 24 hours in a CTH room set to 21 ⁇ 2°C and 50 ⁇ 2% RH. In some instances if the fiber blend materials had become compressed due to handling (i.e., storage or shipping) the fibers were re-lofted by hand carding.
  • FIG. 3 provides a comparison of the recorded thickness and warmth values of Comparative Example 3-6 test specimens, Example Blend A-1 test specimen, and Example Blend A-2 test specimen.
  • FIG. 4 provides a comparison of the recorded thickness and warmth values of Comparative Examples 7-11 test specimens and Example Blend A-1 test specimen.
  • Example Blend A is comparable to that of typical 700 fill power down ( FIG. 3 ). It was observed that the method of construction (direct sew (Example Blend A-1 test specimen) vs. channel fill (Example Blend A-2 test specimen)) may more substantively impact the thickness of the test panel and subsequent heat transfer resistance (Clo) results with Example Blend A as compared to the natural down Comparative Examples. In addition, the warmth testing results indicate that warmth performance of Example Blend A exceeds that of several existing synthetic fiber insulation fill materials and is comparable to that of existing natural down-synthetic fiber blend insulation fill materials ( FIG. 4 ). Example Blend A was observed as having beneficial warmth per thickness (or thermal resistivity) characteristics.
  • Compression-Recovery properties were measured in accordance with ASTM D6571-01 (2001) except as listed below. Test specimens were prepared pursuant to the descriptions of the Warmth/Heat Transfer Resistance Testing section above with the "channel fill” method, using samples of Example Blend A, Example Blend B, and Comparative Example 6 (natural down).
  • Compression-Recovery testing of the respective Examples and Comparative Examples began by stacking several of the corresponding test specimens between the plates of a loading device commensurate with that of ASTM D6571-01 (2001). A number of masses were then centrally and uniformly placed on the specimen stack to get the correct total mass in accordance with that of ASTM D6571-01 (2001). The initial height of the so-prepared specimen stack was measured and recorded (A). After a 24-hour test period, the height of the compressed specimen stack was measured and recorded (G). Percent Compression was determined as: 100 (A-G)/A. The mass was removed and the specimen stack was allowed to relax for one hour. After the one hour recovery period, the height of the specimen stack was measured and recorded, and Percent Short Term Recovery was determined as: 100 J/E.
  • Wash durability was evaluated by subjecting test specimens (described below) to the following testing. Prior to washing in a conventional automatic washing machine, a thickness and warmth value (in units of Clo as tested and calculated by ASTM C518-10 (2010)) of the test specimen was measured and recorded. The washing machine settings were selected as "super load fill level", a cold water wash, cold water rinse, delicate cycle, and regular soil wash setting. 16 grams of powdered laundry detergent (TIDE. Procter & Gamble Co.) was added to the washing machine's tub, and the washing cycle initiated. After allowing the tub to fill with water for 20-30 seconds, 3-6 test specimens were added to the washing machine's tub along with three ballast items (pre-washed and cleaned fabric bath towels).
  • TIDE powdered laundry detergent
  • the entire load was transferred to a conventional automatic clothes dryer.
  • the dryer was set to "delicate”. Three clean tennis balls (pre-washed before use) were then added to the dryer. After 60 minutes drying time, the test specimen was removed. Thickness and warmth value of the washed/dried test specimen was measured and recorded after 24 hours of conditioning in the CTH room set to 21 ⁇ 2°C and 50 ⁇ 2% RH An exterior of the washed/dried test specimen was visually evaluated along at least one channel of the specimen and rated on a scale of 1-5 according to the guidelines of Table 3. Further, the washed/dried test specimen was cut open and an interior of at least one channel of the test specimen was visually evaluated on a scale of 1-5 according to the guidelines of Table 3.
  • Table 3 - Rating System Rating Description 1 Channel has large areas with no material, and feels stiff or hard to the touch, little or no loft 2 Channel has multiple small areas with little or no material, and feels less stiff with potential balling or pilling of the material, has some loft 3 Channel has few areas missing material with some areas that might be low on material, feels moderately soft with minor balling or piling, has good loft 4 Channel has few areas with low or missing material, feels soft with minor balling, has good loft 5 Channel has no areas with low or missing material, feels extremely soft with no noticeable balling, has natural down-like loft
  • Test specimens for Wash Durability Testing were prepared pursuant to the descriptions of the Warmth/Heat Transfer Resistance Testing section above, using samples of Example Blend A and Comparative Example 8. The results of the Wash Durability Testing are reported in Table 4. Table 4 - Wash Durability Testing Sample Thickness (cm) Warmth (Clo) Rating - External Rating - Internal Example Blend A before wash/dry 4.42 5.36 - - Example Blend A after wash/dry 3.52 4.49 5 5 Comp Ex 8 before wash/dry 4.14 5.02 - - Comp Ex 8 after wash/dry 2.50 3.58 4 4
  • polyester staple fiber blends of the present disclosure provide an improvement over previous designs.
  • the polyester staple fiber blends of the present disclosure are readily transported by the airstream of conventional blowing equipment utilized to fill garments and the like with natural down.
  • the polyester staple fiber blends of the present disclosure are highly comparable to typical 700 fill power down in terms of warmth and compression/recovery, including beneficial warmth per thickness (thermal resistivity) properties.
  • the polyester staple fiber blends of the present disclosure exhibit better performance as compared to some existing down alternative products in terms of wash durability and are hypoallergenic.

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  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Mechanical Engineering (AREA)
  • Manufacturing & Machinery (AREA)
  • Nonwoven Fabrics (AREA)
  • Bedding Items (AREA)
EP16718050.4A 2015-03-25 2016-03-24 Blowable natural down alternative Active EP3274494B1 (en)

Applications Claiming Priority (2)

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US201562138141P 2015-03-25 2015-03-25
PCT/US2016/023956 WO2016154402A1 (en) 2015-03-25 2016-03-24 Blowable natural down alternative

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EP3274494A1 EP3274494A1 (en) 2018-01-31
EP3274494B1 true EP3274494B1 (en) 2021-12-22

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US (1) US20180051402A1 (zh)
EP (1) EP3274494B1 (zh)
KR (1) KR20170130494A (zh)
CN (1) CN107438681B (zh)
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WO (1) WO2016154402A1 (zh)

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JP6606172B2 (ja) * 2014-08-26 2019-11-13 スリーエム イノベイティブ プロパティズ カンパニー ポリ乳酸繊維を含むスパンボンドウェブ
CA3069953A1 (en) 2017-07-18 2019-01-24 Bedgear, Llc Fiber combination
WO2021016527A1 (en) * 2019-07-24 2021-01-28 Precision Textiles LLC Washable pillow

Family Cites Families (10)

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Publication number Priority date Publication date Assignee Title
US4304817A (en) * 1979-02-28 1981-12-08 E. I. Dupont De Nemours & Company Polyester fiberfill blends
US4618531A (en) * 1985-05-15 1986-10-21 E. I. Du Pont De Nemours And Company Polyester fiberfill and process
US4588635A (en) 1985-09-26 1986-05-13 Albany International Corp. Synthetic down
US4992327A (en) * 1987-02-20 1991-02-12 Albany International Corp. Synthetic down
EP0524240B1 (en) * 1990-04-12 1994-11-23 E.I. Du Pont De Nemours And Company Fillings and other aspects of fibers
US5698298A (en) * 1994-05-04 1997-12-16 Schuller International, Inc. Fibrous, non-woven polymeric insulation
US6329052B1 (en) * 1999-04-27 2001-12-11 Albany International Corp. Blowable insulation
US6329051B1 (en) * 1999-04-27 2001-12-11 Albany International Corp. Blowable insulation clusters
EP1717192A1 (en) 2005-04-28 2006-11-02 Advansa BV Filling material
CA2897434C (en) * 2013-01-22 2017-10-31 Primaloft, Inc. Blowable insulation material with enhanced durability and water repellency

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EP3274494A1 (en) 2018-01-31
WO2016154402A1 (en) 2016-09-29
KR20170130494A (ko) 2017-11-28
US20180051402A1 (en) 2018-02-22
CN107438681B (zh) 2023-12-22
TW201704572A (zh) 2017-02-01
CN107438681A (zh) 2017-12-05

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