EP4005437A1 - Gewirktes artefakt mit in englischer weise verhakten wärmeschrumpfenden garnen - Google Patents

Gewirktes artefakt mit in englischer weise verhakten wärmeschrumpfenden garnen Download PDF

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Publication number
EP4005437A1
EP4005437A1 EP20211148.0A EP20211148A EP4005437A1 EP 4005437 A1 EP4005437 A1 EP 4005437A1 EP 20211148 A EP20211148 A EP 20211148A EP 4005437 A1 EP4005437 A1 EP 4005437A1
Authority
EP
European Patent Office
Prior art keywords
artefact
knitted fabric
heat
yarns
shrinking
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
EP20211148.0A
Other languages
English (en)
French (fr)
Inventor
Torsten Alfred FRITZE
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.)
DV8 ID SRL
Original Assignee
DV8 ID SRL
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 DV8 ID SRL filed Critical DV8 ID SRL
Publication of EP4005437A1 publication Critical patent/EP4005437A1/de
Pending legal-status Critical Current

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Classifications

    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47C—CHAIRS; SOFAS; BEDS
    • A47C31/00—Details or accessories for chairs, beds, or the like, not provided for in other groups of this subclass, e.g. upholstery fasteners, mattress protectors, stretching devices for mattress nets
    • 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
    • D04B1/10—Patterned fabrics or articles
    • D04B1/12—Patterned fabrics or articles characterised by thread material
    • D04B1/123—Patterned fabrics or articles characterised by thread material with laid-in unlooped yarn, e.g. fleece fabrics
    • 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
    • D04B1/14—Other fabrics or articles characterised primarily by the use of particular thread materials
    • 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
    • D04B1/14—Other fabrics or articles characterised primarily by the use of particular thread materials
    • D04B1/16—Other fabrics or articles characterised primarily by the use of particular thread materials synthetic threads
    • 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
    • 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
    • D10B2401/04—Heat-responsive characteristics
    • 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
    • D10B2401/04—Heat-responsive characteristics
    • D10B2401/041—Heat-responsive characteristics thermoplastic; thermosetting
    • 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
    • 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
    • D10B2403/00—Details of fabric structure established in the fabric forming process
    • D10B2403/01—Surface features
    • D10B2403/011—Dissimilar front and back faces
    • D10B2403/0114—Dissimilar front and back faces with one or more yarns appearing predominantly on one face, e.g. plated or paralleled yarns
    • 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
    • D10B2403/00—Details of fabric structure established in the fabric forming process
    • D10B2403/02—Cross-sectional features
    • D10B2403/023—Fabric with at least two, predominantly unlinked, knitted or woven plies interlaced with each other at spaced locations or linked to a common internal co-extensive yarn system
    • 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
    • D10B2403/00—Details of fabric structure established in the fabric forming process
    • D10B2403/02—Cross-sectional features
    • D10B2403/023—Fabric with at least two, predominantly unlinked, knitted or woven plies interlaced with each other at spaced locations or linked to a common internal co-extensive yarn system
    • D10B2403/0231—Fabric with at least two, predominantly unlinked, knitted or woven plies interlaced with each other at spaced locations or linked to a common internal co-extensive yarn system including contracting yarn, e.g. blister fabrics
    • 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
    • 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
    • D10B2505/00—Industrial
    • D10B2505/08—Upholstery, mattresses

Definitions

  • the present invention relates to a knitted artefact with heat-shrinking yarns hooked "in English”.
  • the present applicant is the holder of the Italian patent application No. 102019000011508 , which describes a modular chair fabric comprising a periodic interlacing with at least one main yarn, in which a secondary yarn is arranged in a weft along a predetermined trajectory.
  • the main fabric may include cushioning elements trapped between two layers of knitted fabric, namely a front layer and a back layer.
  • the secondary yarn may be woven into the knitted fabric or simply inserted between said knitted fabric layers.
  • the main yarn interlocking may define a plurality of tubular portions within which one or more secondary yarns are inserted.
  • the secondary yarn defines different characteristics with respect to the main yarn, e.g. thermal properties, namely. it can undergo elongation or shrinkage proportional to the application or subtraction of heat, namely the secondary yarn can be of the heat-shrinking type.
  • the main yarn and the secondary yarn are mutually bonded at two perimetric areas of the fabric. Said bonding takes place by means of a slider inserted in said tubular perimeter areas.
  • the secondary yarn is bound to the slider with an "English” or “mistake rib” type hook in the tubular area, as usually occurs between the yarn and the knitting needle.
  • the fabric shrinks as a result of the application of heat. Said shrinkage raises the fabric creating a padding effect even in the absence of padding between the front layer and the back layer. In the presence of padding, said shrinkage causes the raising of padded sections processed in alternation to the heat-shrinking type yarn.
  • the user feels the heat-shrinking yarns, which are inherently much stiffer than the yarns of the knitted fabric of the front layer on which the user rests directly.
  • the raising effect that the heat-shrinking yarns generate on the fabric amplifies the discomfort of the support, especially if it is a seat.
  • strips are created also visually at the heat-shrinking yarns which alter the original appearance of the fabric.
  • WO-2018/134743 describes a multilayer knitted artefact comprising a heat-shrinking yarn inserted and connected by stitching to a layer of knitted fabric or made from conventional fabrics or leather. Said artefact is suitable for use in accessories such as bags, sofas, jackets and shoes.
  • It is the object of the present invention is to make a knitted artefact with heat-shrinking yarns, comfortable for a resting user.
  • said artefact is easy to make, in a short time and that it resists to the passing of time maintaining a pleasant comfort of the product in which it is integrated.
  • a knitted artefact for chairs, armchairs, sofas and the like comprising a multilayer and two ends of tubular shape for fixing the multilayer, wherein the multilayer comprises a knitted fabric front layer and a knitted fabric rear layer fixed to sliders of the artefact at said two ends, wherein the artefact also comprises heat-shrinking yarns associated with the multilayer, wherein the heat-shrinking yarns are fixed with an "English” type hook to the sliders so as to develop between the two ends of the artefact, characterized in that the heat-shrinking yarns are associated with the knitted fabric rear layer at the external part of the knitted fabric rear layer, with an "English” type hook.
  • the artefact only shrinks underneath, namely only the knitted fabric rear layer 3 shrinks.
  • the knitted fabric front layer undergoes a completely different technical effect with respect to the knitted fabric rear layer.
  • the artefact according to the present invention meets the user's comfort needs with simple, automated and cost-effective technical means.
  • a knitted artefact 1 for chairs, armchairs, sofas and the like comprises a knitted fabric front layer 2, a knitted fabric rear layer 3 and, where appropriate, a padding between said layers 2, 3.
  • Knitted fabric front layer 2 means the layer with which a user comes into contact.
  • Chairs and armchairs are generally understood to be products for the seating of users, e.g. car seats, aircraft seats, wheelchairs and more.
  • the padding consists of a filament weave which can be connected to the layers 2, 3 by machine or inserted in the gap between layers 2, 3 without any particular bonding.
  • the artefact 1 further comprises a plurality of heat-shrinking yarns 5.
  • the layers 2, 3 form a tubular knitted multilayer.
  • the artefact 1 comprises two tubular ends 11.
  • the heat-shrinking yarns 5 are connected to the ends 11 of the artefact 1 at sliders 12 inserted in said ends 11 which develop in an orthogonal direction with respect to the heat-shrinking yarns 5.
  • the heat-shrinking yarns 5 develop in weft between the two ends 11 at which they wind to have a solid bond.
  • Said ends 11 of the artefact 1 allow the attachment to rigid supporting structures of the chair, sofa or armchair, thus forming seat assemblies that therefore comprise a supporting structure and a supporting knitted fabric comprising said artefact 1.
  • the layers 2, 3 create a tubular structure which can enclose a padding, while the heat-shrinking yarns 5 are positioned outside the knitted fabric rear layer 3 ( figures 2 and 3 ), namely the layer which is not visible in a seat or not in contact with the user, for example a rear portion of a chair backrest.
  • connection points 7 binds the heat-shrinking yarns 5 on the outside of the knitted fabric rear layer 3 with a type of hook known as "English".
  • the heat-shrinking yarns 5 are free on the knitted fabric rear layer 3, between the two ends 11, unless said connection points 7.
  • connection point 7 is provided at least every five beatings of the knitted fabric rear layer 3, wherein beating means a direction of adjacent rows of yarns of the knitted fabric rear layer 3. At least every five beatings means that it can be every five or more beatings.
  • the number of heat-shrinking yarns 5 is less than 20% of the total yarns of the artefact 1, even more preferably between 3% and 8%.
  • the technical effect described below is optimized by increasing the cost-effectiveness of the final product.
  • the artefact 1 shrinks only underneath, namely only the knitted fabric rear layer 3 shrinks.
  • the knitted fabric front layer 2 does not shrink because the heat-shrinking yarns 5 are not bound to the knitted fabric front layer 2.
  • a distancing movement of the knitted fabric front layer 2 away from the knitted fabric rear layer 3 is achieved, namely a three-dimensional effect considering the bonding of the knitted fabric front layer 2 with the slider 12 at the ends 11.
  • said movement consists of a raising of the knitted fabric front layer 2, namely a padding effect is achieved.
  • a real pocket is created.
  • Said technical effect also varies according to the number of heat-shrinking yarns 5.
  • padding also varies said technical effect; if the padding is processed simultaneously with layers 2, 3, the machine programming can define padding of variable density and height.
  • the function of the sliders 12 at ends 11 is very important because they define a stable bond for both the layers 2, 3 and the heat-shrinking yarns 5, without the shrinkage effect of the heat-shrinking yarns 5 being applied to the knitted fabric front layer 2.
  • the knitted fabric front layer 2 undergoes a completely different technical effect with respect to the knitted fabric rear layer 3.
  • the artefact 1 according to the present invention meets the user's comfort needs with simple and cost-effective technical means.
  • the knitted fabric front layer 2 of the "origami” type comprises a plurality of plastic elements 21 spaced apart to create the "origami” effect, namely a three-dimensional deformability, in particular in a direction orthogonal to the surface of the fabric.
  • the knitted fabric front layer 2 of the "origami" type is made using a 3D printing process (3D printer), or preferably a plastic injection moulding process.
  • the knitted fabric front layer 2 is placed on a support, preferably metallic, e.g. aluminium, to isolate the knitted fabric rear layer 3 during the process of adding plastic material.
  • a support preferably metallic, e.g. aluminium, to isolate the knitted fabric rear layer 3 during the process of adding plastic material.
  • the support is interposed between the layers 2, 3.
  • the plastic material printed on top of the knitted fabric front layer 2 creates a plurality of plastic elements 21 which integrate with the knitted fabric front layer 2 conferring localized rigidity to the knitted fabric front layer 2.
  • Figure 5 shows how the plastic elements 21 penetrate the knitted fabric front layer 2.
  • the knitted fabric rear layer 3 is not affected by the process of adding plastic material.
  • Said plastic elements 21 have a variable design according to the printing control or the shape of the mould and are spaced to leave areas in the knitted fabric front layer 2 free from plastic elements 21.
  • said free areas of fabric are deformable, thus allowing three-dimensional deformability of the knitted fabric front layer 2 of the "origami" type.
  • the knitted fabric front layer 2 of the "origami" type is easily separated from the support because said free areas of fabric create contact discontinuities following the creation of the plastic elements 21.
  • the knitted fabric front layer 2 is of the "origami" type, no padding is required between the layers 2, 3 because the three-dimensional effect is given by the origami.

Landscapes

  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Knitting Of Fabric (AREA)
EP20211148.0A 2020-11-30 2020-12-02 Gewirktes artefakt mit in englischer weise verhakten wärmeschrumpfenden garnen Pending EP4005437A1 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
IT202000028904 2020-11-30

Publications (1)

Publication Number Publication Date
EP4005437A1 true EP4005437A1 (de) 2022-06-01

Family

ID=74236003

Family Applications (1)

Application Number Title Priority Date Filing Date
EP20211148.0A Pending EP4005437A1 (de) 2020-11-30 2020-12-02 Gewirktes artefakt mit in englischer weise verhakten wärmeschrumpfenden garnen

Country Status (4)

Country Link
US (1) US20220167756A1 (de)
EP (1) EP4005437A1 (de)
JP (1) JP2022087047A (de)
CN (1) CN114575025A (de)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
IT201900011508A1 (it) * 2019-07-11 2021-01-11 Dv8 Id S R L Tessuto per seggiola componibile

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20150173514A1 (en) * 2013-03-21 2015-06-25 Takano Co., Ltd. Office chair
DE102014003099A1 (de) * 2014-03-11 2015-09-17 Ulmer Strickdesign GmbH Maschenware
JP2015221112A (ja) * 2014-05-22 2015-12-10 タカノ株式会社 椅子
WO2018134743A1 (en) 2017-01-17 2018-07-26 Miles S.P.A. Artefact with knitted structure and method of realisation thereof

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US2350359A (en) * 1941-11-08 1944-06-06 Sure Fit Products Company Self-conforming, surface - gripping, ready-made knitted slip cover for overstuffed upholstered furniture
GB8822638D0 (en) * 1988-09-27 1988-11-02 Gen Motors Corp Knitting method
US5326150A (en) * 1988-09-22 1994-07-05 General Motors Corporation Upholstery fabric
US5013089A (en) * 1989-09-15 1991-05-07 General Motors Corporation Thin profile integrated suspension and seat trim cover
GB9422674D0 (en) * 1994-11-10 1995-01-04 Gen Motors Corp Knitting method
GB9506807D0 (en) * 1995-04-01 1995-05-24 Gen Motors Corp Kntted covers
US5802882A (en) * 1996-06-03 1998-09-08 General Motors Corporation Knitted cover
US5887452A (en) * 1996-08-29 1999-03-30 Lear Corporation Knitted cover
DE19636208A1 (de) * 1996-09-05 1998-03-12 Keiper Recaro Gmbh Co Elastisches Mehrlagengestrick
US5890381A (en) * 1997-10-28 1999-04-06 Lear Corporation Knitted upholstery fabric with tubular fastening portions
US5992185A (en) * 1997-11-12 1999-11-30 Lear Corporation Upholstery fabric
US6151926A (en) * 1998-06-30 2000-11-28 Lear Corporation Vehicle seat cover
DE19847333C2 (de) * 1998-10-09 2001-02-08 Keiper Recaro Gmbh Co Verfahren zur Herstellung von Gestricken mit integrierten Befestigungselementen
DE19847331A1 (de) * 1998-10-09 2000-04-20 Keiper Recaro Gmbh Co Verfahren zum Anbringen von Befestigungselementen an einem gestrickten Sitzbezug und Sitzbezug mit Befestigungselementen
DE19847334A1 (de) * 1998-10-09 2000-04-13 Keiper Recaro Gmbh Co Anordnung zur Befestigung eines zweilagigen Gestricks an einem Träger
AT502289B1 (de) * 2005-08-08 2010-11-15 Greiner Purtec Gmbh Polsterung für einen fahrgastsitz

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20150173514A1 (en) * 2013-03-21 2015-06-25 Takano Co., Ltd. Office chair
DE102014003099A1 (de) * 2014-03-11 2015-09-17 Ulmer Strickdesign GmbH Maschenware
JP2015221112A (ja) * 2014-05-22 2015-12-10 タカノ株式会社 椅子
WO2018134743A1 (en) 2017-01-17 2018-07-26 Miles S.P.A. Artefact with knitted structure and method of realisation thereof

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Publication number Publication date
JP2022087047A (ja) 2022-06-09
US20220167756A1 (en) 2022-06-02
CN114575025A (zh) 2022-06-03

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