EP4234788A1 - Auxetisches nahtloses gewirk und aus dem gewirk hergestellte kleidungsstücke - Google Patents

Auxetisches nahtloses gewirk und aus dem gewirk hergestellte kleidungsstücke Download PDF

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Publication number
EP4234788A1
EP4234788A1 EP22382156.2A EP22382156A EP4234788A1 EP 4234788 A1 EP4234788 A1 EP 4234788A1 EP 22382156 A EP22382156 A EP 22382156A EP 4234788 A1 EP4234788 A1 EP 4234788A1
Authority
EP
European Patent Office
Prior art keywords
fabric
auxetic
garment
fibers
pattern
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.)
Pending
Application number
EP22382156.2A
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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 EP22382156.2A priority Critical patent/EP4234788A1/de
Publication of EP4234788A1 publication Critical patent/EP4234788A1/de
Pending legal-status Critical Current

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Classifications

    • D—TEXTILES; PAPER
    • D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
    • D04B—KNITTING
    • D04B21/00—Warp knitting processes for the production of fabrics or articles not dependent on the use of particular machines; Fabrics or articles defined by such processes
    • D04B21/20—Warp 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 articles of particular configuration
    • D04B21/207—Wearing apparel or garment blanks
    • D—TEXTILES; PAPER
    • D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
    • D04B—KNITTING
    • D04B21/00—Warp knitting processes for the production of fabrics or articles not dependent on the use of particular machines; Fabrics or articles defined by such processes
    • D04B21/10—Open-work fabrics
    • D04B21/12—Open-work fabrics characterised by thread material
    • 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
    • D10B2501/02—Underwear
    • D10B2501/021—Hosiery; Panti-hose

Definitions

  • the present invention relates to an auxetic seamless knitted fabric.
  • the present invention also relates to the garments made from the auxetic fabric.
  • 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 fiber 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].
  • auxetic material when auxetic material are subjected to tensile forces, has associated changes in its geometric/spatial conformation. Therefore, the structures of the auxetic material can be incorporated into products that are not only functional, but also have an attractive design.
  • the main problem to be solved in the seamless knitted garments is transparency.
  • the problem is that the garments, specifically leggings, currently available on the market have transparency in certain voluminous parts, such as the buttocks, and when stretching movements are made, this transparency compromises the intimacy and well-being of the user.
  • the main object of the present invention is to provide an auxetic seamless knitted fabric and garments made from the auxetic fabric.
  • the fabric of the present invention has the auxetic properties thanks to the combination of the patterns of the structures that forms the fabric and the type of fibers, without losing any of the characteristics associated with garments and products produced with the seamless technology.
  • the auxetic fabric presents improved properties that allow its application in different garments, such as leggings or T-shirts, offering a range of products to the user with the following advantages: no transparency since is able to adjust to the different body shapes and sizes of the user, comfort, ergonomics and attractive design.
  • the present invention refers to an auxetic seamless knitted fabric comprising at least one of the following structures:
  • the fibers of the fabric have between 70-80% of polyamide, between 15-25% of cationic polyester and a 5% of elastane.
  • the present invention refers to a garment that comprises the auxetic fabric of the present invention.
  • garment refers to any article or garment configured to be worn on a human.
  • garments thus include shirts, pants, tights, leggings, shorts, and sleeves, as well as numerous other products configured to be worn on a person.
  • the auxetic seamless knitted fabric of the present invention comprises different structures.
  • Figure 1 shows the pattern of the first structure (2).
  • This first structure has a first pattern such that the first pattern comprises parallel columns of fibers with a gap between each two adjacent columns.
  • Figure 2 shows the pattern of the second structure (3).
  • This second structure (3) has a second pattern such that the second pattern comprises identical parallel columns of fibers with a gap between each two adjacent columns.
  • Figures 3-10 illustrates several garments (1) that can be constructed from the auxetic seamless knitted fabric of the present invention. Specifically, tights for sport activities.
  • the garment is a sport garment, specifically tights for sport activities.
  • the garment of this embodiment is made entirely with the second structure (3).
  • the garment is a sport garment, specifically tights for sport activities.
  • the garment of this embodiment is made entirely with the first structure (2).
  • the garment is a sport garment, specifically tights for sport activities.
  • the garment of this embodiment comprises the first structure (2) located in pelvic zone and upper legs of the user.
  • the garment is a sport garment, specifically tights for sport activities.
  • the garment of this embodiment comprises the second structure (3) located in pelvic zone and upper legs of the user.
  • the garments comprising the auxetic fabric show improvements over those on the market in two categories: structural and functional. In the structural area, improvements have been obtained in their mechanical or physical properties. On the other hand, they respond specifically to a given stimulus.
  • the two structures presented are the ones with the best negative poison coefficients, evidencing their auxecticity and, therefore, the ideal combination of structural and functional properties to solve the problems of the state of the art.

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  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Knitting Of Fabric (AREA)
EP22382156.2A 2022-02-23 2022-02-23 Auxetisches nahtloses gewirk und aus dem gewirk hergestellte kleidungsstücke Pending EP4234788A1 (de)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP22382156.2A EP4234788A1 (de) 2022-02-23 2022-02-23 Auxetisches nahtloses gewirk und aus dem gewirk hergestellte kleidungsstücke

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP22382156.2A EP4234788A1 (de) 2022-02-23 2022-02-23 Auxetisches nahtloses gewirk und aus dem gewirk hergestellte kleidungsstücke

Publications (1)

Publication Number Publication Date
EP4234788A1 true EP4234788A1 (de) 2023-08-30

Family

ID=80461120

Family Applications (1)

Application Number Title Priority Date Filing Date
EP22382156.2A Pending EP4234788A1 (de) 2022-02-23 2022-02-23 Auxetisches nahtloses gewirk und aus dem gewirk hergestellte kleidungsstücke

Country Status (1)

Country Link
EP (1) EP4234788A1 (de)

Citations (4)

* 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
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

Patent Citations (4)

* 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
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

Non-Patent Citations (6)

* 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
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, vol. 505, no. 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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