EP4234786A1 - Schutzbekleidung aus auxetischem nahtlosen gestrick, kombiniert mit nicht-newtonschen fluiden - Google Patents

Schutzbekleidung aus auxetischem nahtlosen gestrick, kombiniert mit nicht-newtonschen fluiden Download PDF

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Publication number
EP4234786A1
EP4234786A1 EP22382157.0A EP22382157A EP4234786A1 EP 4234786 A1 EP4234786 A1 EP 4234786A1 EP 22382157 A EP22382157 A EP 22382157A EP 4234786 A1 EP4234786 A1 EP 4234786A1
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EP
European Patent Office
Prior art keywords
auxetic
layer
knitted fabric
materials
seamless knitted
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
EP22382157.0A
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English (en)
French (fr)
Inventor
Hernâni Días
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Nueva Expression Textil Sa
Original Assignee
Nueva Expression Textil Sa
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Nueva Expression Textil Sa filed Critical Nueva Expression Textil Sa
Priority to EP22382157.0A priority Critical patent/EP4234786A1/de
Publication of EP4234786A1 publication Critical patent/EP4234786A1/de
Withdrawn legal-status Critical Current

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Classifications

    • D—TEXTILES; PAPER
    • D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
    • D04B—KNITTING
    • D04B1/00—Weft knitting processes for the production of fabrics or articles not dependent on the use of particular machines; Fabrics or articles defined by such processes
    • D04B1/22—Weft knitting processes for the production of fabrics or articles not dependent on the use of particular machines; Fabrics or articles defined by such processes specially adapted for knitting goods of particular configuration
    • D04B1/24—Weft knitting processes for the production of fabrics or articles not dependent on the use of particular machines; Fabrics or articles defined by such processes specially adapted for knitting goods of particular configuration wearing apparel
    • D04B1/246—Upper torso garments, e.g. sweaters, shirts, leotards
    • D—TEXTILES; PAPER
    • D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
    • D04B—KNITTING
    • D04B1/00—Weft knitting processes for the production of fabrics or articles not dependent on the use of particular machines; Fabrics or articles defined by such processes
    • D04B1/22—Weft knitting processes for the production of fabrics or articles not dependent on the use of particular machines; Fabrics or articles defined by such processes specially adapted for knitting goods of particular configuration
    • D04B1/24—Weft knitting processes for the production of fabrics or articles not dependent on the use of particular machines; Fabrics or articles defined by such processes specially adapted for knitting goods of particular configuration wearing apparel
    • D04B1/243—Weft knitting processes for the production of fabrics or articles not dependent on the use of particular machines; Fabrics or articles defined by such processes specially adapted for knitting goods of particular configuration wearing apparel upper parts of panties; pants
    • 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
    • D10B2401/00—Physical properties
    • D10B2401/06—Load-responsive characteristics

Definitions

  • the present invention relates to protective garments made from the auxetic fabric combined with non-Newtonian fluids.
  • auxetic materials are different from most conventional materials in that they exhibit a negative Poisson's ratio (NPR). They expand laterally when stretched and contract laterally when compressed. This counterintuitive behaviour gives auxetic materials various beneficial effects, such as enhanced shear stiffness, increased plane strain fracture toughness, increased indentation resistance, and improved energy absorption properties [1,2].
  • NPR negative Poisson's ratio
  • auxetic materials can be produced in different materials including polymers, metals, ceramics, and composites [3].
  • auxetic materials are used in composite materials to promote fibers reinforcement in textiles for crash helmets and sports clothing, as sponges, as ropes, in filtration and as shock absorbing materials [4]. They have a lot of potential applications, from biomedical to automotive and defence industries. Also, these materials could potentially be used for completely new structures with special functions [5].
  • Auxetic materials stand out for their unique characteristics that allow their use in numerous applications.
  • the main inherent characteristic of these materials is the stretching behaviour of the cross-section when there is tension in the longitudinal section. This particularity endows the material with unique characteristics, both from a functional and visual point of view.
  • auxetic materials Compared to common materials, due to this behaviour and intrinsic characteristics, auxetic materials also stand out for their high resistance to fracture and shear. If the material presents a crack, in the expansion process the crack tends to be closed due to transversal elongation. Furthermore, the fact that this type of materials assumes a synclastic curve when submitted to an out-of-plane stress allows the material not to be forced to assume an unstable conformation, thus decreasing the probability of fracture [6].
  • auxetic materials give them unique characteristics in behaviour and response to impacts, as well as energy absorption and physical change in response to external forces [6].
  • non-Newtonian Fluids In the area of materials that, thanks to their characteristics, can be used for protection products or equipment, it also stands out the non-Newtonian Fluids.
  • the main characteristic of non-Newtonian Fluids is that they do not follow Newton's laws, i.e., constant viscosity independent of stress. The viscosity of these materials is dependent on the shear rate.
  • shear thickening fluids STF
  • STF shear thickening fluids
  • auxetic materials have these properties have potential for use in a number of defence applications.
  • US2020221816A1 describes a footwear cover that includes a sole portion, that at least partially comprises an auxetic structure, that includes an inner layer and an outer layer that cooperate to define at least a first interior space there between, at least a first bladder member disposed in the first interior space, and an upper connected to the sole portion.
  • the first bladder member defines a bladder interior that includes a non-Newtonian fluid disposed therein.
  • US2018027893A1 describes a protective garment system for protecting an individual and methods of using the same.
  • the invention describes an active layer can include any suitable energy-responsive material that changes at least one physical property thereof responsive to receiving the stimulus energy.
  • the energy-responsive material can include at least one of an electrorheological fluid, a magnetorheological fluid, an electroactive polymer, a non-Newtonian fluid, or an auxetic material.
  • the protection system described by this invention requires many layers of complex materials, which implies greater manufacturing complexity and higher cost.
  • the main object of the present invention is to provide a protective garment made from an auxetic fabric.
  • the protection offered by the garments of the present invention is due to the combination of the type of structure and materials of fibers plus the impregnation with non-Newtonian fluids.
  • the protective garment can be used in different applications, offering a range of products to the user with the following advantages: greater modular protection (adaptable to the needs of the activity/user), breathable, comfortable, and ergonomic.
  • the present invention refers to a protective garment comprising at least one of the following layers:
  • the fibers of the fabric have between 80-90% of polyamide and between 10-20% of elastane.
  • the non-Newtonian fluid is a Shear thickening fluid (STF).
  • STF is a kind of non-Newtonian fluid, where the shear stress is not linearly related with the shear rate.
  • the viscosity of fluid increases as shear rate or applied stress increases on the medium.
  • protective garment includes all type of garments that assist with protecting a user from various types of injuries, damages or shocks, such as injury due to falling, being struck by an object or due to contact with other people. These protective garments can be used in different fields such as defence applications, sports or medicine.
  • Garments in accordance with the present invention may comprise tights, sleeves for arms, sleeves for legs, socks, shirts, or any other type of garment that may be worn on the portion of the user anatomy where protection is desired.
  • the protective garment (1) of the present invention comprising at least one of the following layers:
  • Figure 1 shows the pattern of the first (2) and the second (3) layer of the protective garment (1).
  • Figures 2-5 illustrates several protective garments (1).
  • the protective (1) garment is a shirt that comprises the first layer (2) in the entire garment and the second layer (3) located on the lower part of the sleeves, the central part of the chest and the sides of the garment.
  • the protective (1) garment is a tight that comprises the first layer (2) in the entire garment and the second layer (3) located in the central part of shins and thigh area.

Landscapes

  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Professional, Industrial, Or Sporting Protective Garments (AREA)
EP22382157.0A 2022-02-23 2022-02-23 Schutzbekleidung aus auxetischem nahtlosen gestrick, kombiniert mit nicht-newtonschen fluiden Withdrawn EP4234786A1 (de)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP22382157.0A EP4234786A1 (de) 2022-02-23 2022-02-23 Schutzbekleidung aus auxetischem nahtlosen gestrick, kombiniert mit nicht-newtonschen fluiden

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP22382157.0A EP4234786A1 (de) 2022-02-23 2022-02-23 Schutzbekleidung aus auxetischem nahtlosen gestrick, kombiniert mit nicht-newtonschen fluiden

Publications (1)

Publication Number Publication Date
EP4234786A1 true EP4234786A1 (de) 2023-08-30

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
EP22382157.0A Withdrawn EP4234786A1 (de) 2022-02-23 2022-02-23 Schutzbekleidung aus auxetischem nahtlosen gestrick, kombiniert mit nicht-newtonschen fluiden

Country Status (1)

Country Link
EP (1) EP4234786A1 (de)

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB966612A (en) * 1961-01-11 1964-08-12 Liebrandt Karl Method and machine for the production of jacquard patterned fabrics
EP0875612A2 (de) * 1997-05-01 1998-11-04 Alba-Waldensian, Inc. Nahtloser rundgestrickter Büstenhalter und Verfahren zu dessen Herstellung
EP1371768A1 (de) * 1997-11-25 2003-12-17 Tama Plastic Industry Schuss gewirktes Netz
WO2009002479A1 (en) * 2007-06-21 2008-12-31 University Of Massachusetts Auxetic fabric structures and related fabrication methods
EP2725126A1 (de) * 2011-06-23 2014-04-30 Toray Opelontex Co., Ltd Polyurethangarn sowie gewebe und badeanzug damit
US20180027893A1 (en) 2016-07-29 2018-02-01 Elwha Llc Protective garment systems for protecting an individual and methods of using the same
EP3384790A1 (de) * 2017-04-04 2018-10-10 Reebok International Limited Bewegungsreaktive sportbekleidung und verfahren zur herstellung davon
US20200221816A1 (en) 2019-01-10 2020-07-16 Tate Technology, Llc Tactical impact mitigation footwear cover

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB966612A (en) * 1961-01-11 1964-08-12 Liebrandt Karl Method and machine for the production of jacquard patterned fabrics
EP0875612A2 (de) * 1997-05-01 1998-11-04 Alba-Waldensian, Inc. Nahtloser rundgestrickter Büstenhalter und Verfahren zu dessen Herstellung
EP1371768A1 (de) * 1997-11-25 2003-12-17 Tama Plastic Industry Schuss gewirktes Netz
WO2009002479A1 (en) * 2007-06-21 2008-12-31 University Of Massachusetts Auxetic fabric structures and related fabrication methods
EP2725126A1 (de) * 2011-06-23 2014-04-30 Toray Opelontex Co., Ltd Polyurethangarn sowie gewebe und badeanzug damit
US20180027893A1 (en) 2016-07-29 2018-02-01 Elwha Llc Protective garment systems for protecting an individual and methods of using the same
EP3384790A1 (de) * 2017-04-04 2018-10-10 Reebok International Limited Bewegungsreaktive sportbekleidung und verfahren zur herstellung davon
US20200221816A1 (en) 2019-01-10 2020-07-16 Tate Technology, Llc Tactical impact mitigation footwear cover

Non-Patent Citations (8)

* Cited by examiner, † Cited by third party
Title
DARJA, R.TATJANA, R.ALENKA, P. C.: "Auxetic textiles", ACTA CHIMICA SLOVENICA, vol. 60, no. 4, 2014, pages 715 - 723
EVANS K. E.A. ALDERSON: "Auxetic Materials : Functional Materials and Structures from lateral thinking", ADVANCE MATERIALS, vol. 12, 2000, pages 617 - 628
GURGEN, SKU§HAN, M.C.LI, W.: "Shear thickening fluids in protective applications: A review", PROG. POLYM. SCI., vol. 75, 2017, pages 48 - 72, XP085261216, DOI: 10.1016/j.progpolymsci.2017.07.003
HASANZADEH M.MOTTAGHITALAB, V.: "The role of shear-thickening fluids (STFs) in ballistic and stab-resistance improvement of flexible armor", J. MATER. ENG. PERFORM., vol. 23, no. 4, 2014, pages 1182 - 1196, XP035372414, DOI: 10.1007/s11665-014-0870-6
KOCER, C.D. R. MCKENZIEM. M. BILEK: "Elastic properties of a material composed of alternating layers of negative and positive Poisson's ratio", MATERIALS SCIENCE AND ENGINEERING: A 505, vol. 1-2, 2009, pages 111 - 115, XP025937645, DOI: 10.1016/j.msea.2008.11.002
LIU, Y.HU, H.: "A review on auxetic structures and polymeric materials", SCI. RES. ESSAYS, vol. 5, no. 10, 2010, pages 1052 - 1063, XP002781428
PRAWOTO, Y: "Seeing auxetic materials from the mechanics point of view: a structural review on the negative Poisson's ratio", COMPUTATIONAL MATERIALS SCIENCE, vol. 58, 2012, pages 140 - 153, XP028475396, DOI: 10.1016/j.commatsci.2012.02.012
YANG, W.Z. M. LIW.SHIB. H. XIEM. B. YANG: "The Use of Auxetic Materials in Smart Structures", JOURNAL MATERIAL SCIENCE, vol. 39, 2004, pages 3269 - 3279

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