EP0932715A1 - Article tricote multicouche elastique - Google Patents

Article tricote multicouche elastique

Info

Publication number
EP0932715A1
EP0932715A1 EP97942778A EP97942778A EP0932715A1 EP 0932715 A1 EP0932715 A1 EP 0932715A1 EP 97942778 A EP97942778 A EP 97942778A EP 97942778 A EP97942778 A EP 97942778A EP 0932715 A1 EP0932715 A1 EP 0932715A1
Authority
EP
European Patent Office
Prior art keywords
rows
stitches
knitted fabric
weave
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.)
Granted
Application number
EP97942778A
Other languages
German (de)
English (en)
Other versions
EP0932715B1 (fr
Inventor
Friedrich Roell
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.)
Gebrueder Achter GmbH and Co KG
Original Assignee
Keiper Recaro GmbH and Co
Recaro GmbH and Co KG
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 Keiper Recaro GmbH and Co, Recaro GmbH and Co KG filed Critical Keiper Recaro GmbH and Co
Priority to EP00128367A priority Critical patent/EP1092798B1/fr
Priority to EP00128366A priority patent/EP1092797B1/fr
Publication of EP0932715A1 publication Critical patent/EP0932715A1/fr
Application granted granted Critical
Publication of EP0932715B1 publication Critical patent/EP0932715B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

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
    • 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
    • D04B1/102—Patterned fabrics or articles with stitch pattern
    • D04B1/104—Openwork fabric, e.g. pelerine 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
    • D10B2401/00—Physical properties
    • D10B2401/06—Load-responsive characteristics
    • D10B2401/061—Load-responsive characteristics elastic
    • 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
    • D10B2501/00—Wearing apparel
    • D10B2501/06—Details of garments
    • D10B2501/061—Piped openings (pockets)
    • 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 single- or multi-layer knitted fabric with high stability, variable patterning and design, defined elasticity and a method for its production.
  • Such knitted fabrics are designed in particular for applications in which on the one hand a high mechanical strength and on the other hand a desired elasticity is specifically required.
  • Seating is a preferred application.
  • the technical construction of seating furniture with textiles as a seat has so far been carried out using a frame in which a - usually woven - textile was laterally fixed by springs.
  • the woven, largely rigid textile had a high mechanical strength and the elasticity was realized by the connection of the textiles by means of springs to the frame.
  • a first method for producing a - in particular multi-layer - knitted fabric with selectively adjustable transverse stability and transverse elasticity one works with a basic weave in at least one knitted fabric layer, which basic weave contains rows of stitches which for the most part have liquors with a length of the distance of at least two active needles which are staggered in successive courses.
  • the lateral stability can be partially adjusted here by changing the length of the liquor and additionally, if necessary, by using more or less elastic materials in different areas of the knitted fabric.
  • a basic weave is used in at least one knitted fabric layer, which basic weave has a sequence of first and second stitch rows, with the predominant part of the active ones in the first stitch rows Needles form a stitch, and in the second stitch rows mostly liquors with a length of the distance of at least two active needles.
  • the direction of the needle bed designates transverse elastic or transverse stable.
  • the stability can be regulated not only by the sequence of the first and second rows of stitches, but also by the length of the liquors, with a longer liquor length resulting in greater transverse stability with reduced longitudinal stability. However, this can be increased, for example, via a warp thread entry.
  • the knitted fabric preferably contains a basic weave with at least two layers of knitted fabric, which are preferably produced separately on at least one front and rear needle bed of a flat knitting machine.
  • Each layer contains an alternating sequence of first rows of stitches in which at least the majority of the active needles form a stitch and second rows of stitches in which fleets are formed.
  • the fleets are created by knitting at most every second active needle, so that the fleets produced are at least the length of the distance between two active needles.
  • the first rows of stitches are preferably knitted with at least approximately all active needles.
  • the second rows of stitches ensure greater transverse stability, ie stability in the direction of the needle bed or in the direction of the rows of stitches. This stability is the higher, the longer the fleets and the denser the sequence of the second course in the Are basic.
  • the longitudinal stability ie the stability in the direction of the rod, also decreases as the liquor length increases.
  • the strengths in the longitudinal and in the transverse direction can be increased by selected warp and / or weft insertion.
  • the sequence and number of the first and second courses e.g. A first row of stitches followed by two second rows of stitches or two first rows of stitches followed by a second row of stitches or alternating sequences of a first and a second row of stitches, the desired property of the knitted fabric, either a higher elasticity or a higher transverse stability, can be individually tailored in the desired manner , in particular also partially and controlled with the selection of different materials. As already described, this can also be adjusted by the length of the fleets in the second course.
  • An alternating arrangement of four courses is preferably used in the basic weave.
  • the first two courses have already been described.
  • the second row of stitches is followed by a third row of stitches, which is formed in the same way as the first row of stitches, and the third row of stitches is followed by a fourth row of stitches, which in turn is formed in the same way as the second row of stitches, but with the fleets of the fourth row of stitches are offset from the fleets of the second course. In this way, the overall stability of the knitted fabric is increased.
  • the two layers of knitted fabric are knitted separately on a front and rear needle bed. So you knit ultimately two separate layers, which can be entangled or otherwise connected in their edge region. In this way, a kind of large hose or any other contour is generated, which only has to be clamped onto a frame. In this way, there is no need to arrange separate fastening elements on the knitted fabric, which, however, can also be provided additionally or alternatively.
  • the fleets of the second and fourth rows of stitches in the two layers one above the other are offset from one another, which in turn has a positive effect on the overall stability of the knitted fabric, in analogy to the offset clinker structure for house walls.
  • the two layers of the basic weave can also be connected to one another by means of a pile thread or by other connection techniques, as a result of which the knitted fabric thickness and other parameters, such as e.g. let the strength be influenced.
  • one or more further knitted ties for example in the form of a net weave, are provided, within which the two layers of the basic structure are connected to one another in such a way that a net-like, high-strength, but also highly elastic, strongly broken structure is created .
  • the elasticity and strength can be specifically controlled by an appropriate choice of the knitted weave and the materials used.
  • This structure should preferably be provided in the back area of seating furniture, where there is good ventilation. tion must be guaranteed in addition to the required elastic properties.
  • This net weave is characterized by a connected single- or multi-layer structure, in which a stitch is formed in the first rows of stitches on each active needle, but the mesh thread is placed on the needles of at least one second needle bed on catch in defined needle spacings.
  • a structure of the first row of stitches is knitted again.
  • the catch is hung back from the needles of the second bed onto the first needle bed, which creates the holes in the net structure.
  • the mesh size of the mesh structure can be set as desired by means of the spacing of the catches on the second needle bed and by possibly repeating the second rows of stitches.
  • the network structure can, of course, also be set using other parameters, such as the selected needles, the distance between the catches and the selection of the needles. Larger holes are usually made by simply covering / reassigning stitches. To stabilize, a weft that runs along can be inserted in particular in the area of the hole edge.
  • the fleets, which are either installed or integrated, serve as pure stabilization elements and have no significant influence on the appearance.
  • a pile thread can be provided to increase the stability between the two layers.
  • the desired structure of the knitted fabric can also be achieved by combining the basic structure with the network structure.
  • the net structure in a targeted manner in the basic structure at targeted points, for example on the seat or back area of a piece of seating furniture, more elastic and openwork areas can be provided.
  • a defined - in particular also partial / sequential - connection of the basic structure and additional knitted fabrics preferably different mesh structures, with different (mesh) strengths and rigid or elastic materials, self-supporting and especially patterned seat covers can be produced to suit the body.
  • the knitted structures mentioned above are excellently suitable for the production of a self-supporting structured seat cover, whereby the self-supporting knitted fabric takes into account both the mechanical properties and the optical properties due to the elegant and structurable structure. In this way, the stability properties as well as the seating comfort can be realized, which was not previously thought possible.
  • a seat element produced from the above knitted fabric can be produced as a two-dimensional, two-and-a-half-dimensional or three-dimensional structure.
  • the knitted fabric, in particular in the edge area can be fastened to the frame by means of additional fastening elements.
  • the tubular structure should preferably be selected, in which no separate fastening elements have to be provided between the knitted fabric and the supporting tubular frame. The invention is described below, for example, using the schematic drawing. In this show:
  • Figure 1 shows the needle diagram of a basic weave of the inventive knitted fabric.
  • Fig. 2 shows the needle diagram of a net binding of the knitted fabric according to the invention;
  • Fig. 3 shows the use of the basic structure and network structure in the backrest of a piece of seating furniture; and
  • Fig. 4 shows a cross section IV-IV through the backrest
  • Fig. 1 shows the structure of the basic weave of a knitted fabric of the present invention.
  • stitches are formed on the needles of the front needle bed, a stitch being formed on each active needle.
  • a stitch is also formed on each active needle on the rear needle bed, as shown in FIG. 1 b).
  • 1 c) and d) now show the formation of the second course.
  • liquors are formed on the front needle bed in that the mesh thread is only cultivated on every second needle. Alternatively, it can also be used on every third, fourth etc. needle. It is also possible not to form the fleet by splicing the thread at the connection points, but by laying catch. In the same way, in Fig.
  • the liquors according to process steps g) and h) in the fourth stitch row are offset by one needle position in each case compared to the liquors in process steps c) and d) in the second stitch row.
  • the sequence of meshes and fleets can be chosen arbitrarily.
  • the first or third rows of stitches can be formed twice in succession in accordance with process steps a), b) or e) and f) and / or fleets in accordance with process steps c) and d ) or g) and h) are formed.
  • the elasticity or stability of the knitted fabric is set in the desired manner by the appropriate choice of this sequence and by the choice of the liquor lengths in process steps c), d) and g) and h).
  • the basic structure can also be produced by offset fleets according to steps c + d, g + h.
  • FIG. 2 shows the needle diagram for the net binding, which can be inserted into the basic binding in the manner shown in FIG. 3, for example. Due to the net tie a heavily broken and provided more elastic structure than the basic weave, which primarily has a high stability and serves as a support structure. The net binding is a connected double-surface structure.
  • a first row of stitches according to FIG. 2a, the active needle is counted on the rear needle bed, while the mesh thread is placed on catches on needles of the front needle bed at defined intervals, in the present case at intervals of two needles.
  • a second and third row of stitches which can be viewed as a succession of two second rows of stitches, fleets are knitted on the back needle bed, each of which extends over a length of six needles, the fleets of the second and third stitch rows being approx. 1 are offset.
  • the process step according to FIG. 2a is repeated in a fourth stitch row according to FIG. 2d and the catch is hung back again in the subsequent fifth stitch row according to FIG. 2e.
  • process steps f) to k the formation of these five courses is repeated, the fleets of the seventh and eighth courses according to process steps g) and h) being offset in relation to the liquors in the second and third courses according to b) and c) .
  • the net-like structure is achieved when the catches are hung back from the front needle bed to the rear needle bed according to process steps e) and k).
  • the applied catches, selected needles, length and integration of the fleets and transfer of the needles or catches can also be selected individually.
  • Fig. 3 shows the backrest of a seat cover 10 which is stretched on a tubular frame 12.
  • the cover in double layer fertilizer can be single-bed or double-bed knitted.
  • the tubular frame 12 is preferably made of painted or chromed steel tube or of another noble metal, plastic or light metal or composite materials from the above materials.
  • the seat cover 10 is formed in the entire base area 14, especially in the area of the suspension by the basic binding according to FIG. 1.
  • several net areas 16 are provided, which are knitted with the net binding. In these net areas 16, the elasticity is increased due to the nature of the net binding. In addition, the knitted fabric in these mesh areas 16 is severely broken, so that the corresponding passage of the back is well ventilated.
  • the seat cover 10 thus appears visually appealing and at the same time has a high level of functionality.
  • the edge area 13 of the cover is worked with rubber thread. This neatly conceals the staircase structure common to arches or semicircular shapes - in the illustration at the upper edge area.
  • the edge area which is knitted with a rubber thread, also serves as a shock absorber, which quickly causes high mechanical stresses on the cover. As a result, edge areas can also be made insensitive to impact.
  • a reinforced perforated strip or perforated edge strip 17 can be integrated in the lower end region of the cover for fixing the cover to a cross member. An improved connection of the cover to the perforated edge strip 17 can be achieved by using melt threads.
  • the knitted structure in the perforated edge strip area could thus be fused, so that no overstressing of individual stitches or stitch areas occurs in the area of the holes.
  • the area 15 between Perforated edge strip 17 and frame 12 are preferably linked or also knitted with fusible thread, so that when this area 15 is subsequently heated, a clean and mechanically insensitive finish is achieved by fusing the knitted structure.
  • Fig. 4 shows the cross section IV-IV of Fig. 3.
  • the basic bond consisting of the two layers 18 and 20 is stretched in the base region 14 between the tubes 12 of the chair frame.
  • the two layers 18, 20 of the basic weave are connected to one another in the area of the net weave 16, this net area 16 ensuring the appropriate ventilation of the backrest surface.
  • Fig. 5 shows threads that can be used in edge areas 13, 15 of the cover.
  • the thread 28 shown in Fig. 5a) has a PES / PA base 30 and is wrapped with a thermal thread 32 with a defined shrinkage.
  • the knitted fabric contracts in a defined manner and possibly melts somewhat, so that good contact with the frame 12 or a defined tension in the corresponding area 15 and a smooth finish are produced.
  • 5b) shows an elastic thread 33 with a PES / PA base thread 34, which is twisted with a rubber thread 36. Even with such a thread, a good fit of the cover on the frame and a lamination of curved stair areas (upper backrest edge) can be achieved. pass.
  • an area knitted with this thread 33 also has shock-absorbing or shock-absorbing properties.
  • FIG. 6 shows the production of a hole 40 in a network structure 42.
  • the hole is produced by transferring stitches 44 to the outside according to the arrows and then knitting the stitches together.
  • Two warp threads 46, 48 are guided in the hole edge area, which give the hole good stability. In this way, stable net structures with large holes can be produced that are visually appealing and ensure good ventilation for use in the seat cover area.
  • Fig. 7 shows the method for clean knitting of arcuate edges.
  • One or more rows of stitches are knitted with elastic thread.
  • the rubber strip 50 thus produced is connected step by step to areas which are knitted with normal thread.
  • a central section 52 is knitted onto the bar 50, which has the height of one or more rows of stitches.
  • the adjacent areas 54 are then additionally knitted, again over one or more courses.
  • the knitted area extends over the areas 56 and 58 until finally the entire width of the bar 50 is continued with normal thread. This gives a smooth, clean, curved edge, which can be obtained by using the rubber thread, e.g. 33 from Fig. 5, resiliently applied to the frame.
  • FIG. 8 shows a section with a length of four stitch rows A to D and a width of four meshes 1 to 4 a basic bond.
  • the courses A to D of this basic weave contain mutually offset fleets which are meshed at points 1 to 4. You may also be caught at these points. By choosing different thread materials and different fleet length, the elasticity or. Stability properties of the basic weave in each stitch row A to D and at all meshing points 1 to 4 can be regulated individually.
  • 3 and 4 illustrate that not only can the elasticity or stability of the knitted fabric be defined at different points by executing the basic weave and net weave per se, but this choice can also be supported by a targeted arrangement of the net regions 16 within the basic weave regions 14 .
  • the high functionality of the arrangement of these areas can be combined with a corresponding decorative effect.
  • first (front) layer with the second (rear) layer are connected by inserted / bound pile threads.
  • chain / weft threads in particular made of high-strength materials, can also be inserted / bound in part / sequentially.
  • the first layer can be worked with different strengths and materials regardless of the second layer.
  • the layers can also be partially with different strengths, different materials or material hybrids - in particular elastic or shrinking - or variable binding structures are worked.
  • shrinking textile threads the knitted fabric is first stretched onto the frame and then shrunk, so that an optically appealing tight fit of the knitted fabric on the frame is obtained, possibly avoiding gradations or stairs.
  • the use of elastic materials can also conceal the 'stairs / peaks' that occur in the edge area when it is decreased / increased; the 'rubber thread mesh' serves as a shock absorber in the horizontal / vertical edge area.
  • a stable perforated edge as a finish serves to fix and tension the cover in the direction of the rod.
  • other fasteners can also be integrated directly.
  • a stable 'tube cover' can be produced from two double-layered layers of knitted fabric with the advantage that the desired stability / elasticity can be achieved more easily, more economically and more durably through different binding structures.
  • Knitting with a twin assembly offers in particular the simple possibility of working, for example, stable passages with a + b needles, and the stretchable passages only with a needles. Large net holes can also be achieved by moving meshes around. An additional thread is integrated to stabilize the edge area.
  • patterns can also be effectively incorporated in the known intarsia technique; these elements then preferably consist of elastic materials.
  • a tube cover can also be made using elastic materials. This tube cover is then pulled over a foam core.
  • the basic weave can be defined in elasticity and stability by different combinations of all or only selected needles with / without elastic threads as well as the net structure or weave structure with / without liquors.
  • stitches or warp or weft threads can be produced or incorporated in a targeted manner from elastic threads with a defined stretching behavior. In this way, a specific tension can be set in a knitted fabric cover or border areas can be worked so that they fit snugly on the frame.
  • the knitted fabric of a seat cover preferably consists of a multi-layer structure. To achieve curved, cylindrical convex or concave deformations of the knitted fabric, the lower different layers with different number of stitches and / or double crochet.
  • a seat is made with a cover consisting of a multi-layer structure. Different positions are then advantageously assigned to the layers.
  • a lower layer can be designed as a carrier layer, while a seat layer oriented towards the seat has an air-conditioning function, e.g. perforated areas or moisture-absorbing properties.
  • These layers can be knitted together or connected to one another by a pile thread.
  • a seat is provided with a cover which is made from an elastic tubular knitted fabric. This elastic knitted tube is stretched around the frame and thus fixes itself on the frame. Elastane or material hybrids with elastic components can be used as the material.

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  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Knitting Of Fabric (AREA)
  • Treatment Of Fiber Materials (AREA)

Abstract

L'invention concerne un procédé permettant de produire un article tricoté, en particulier un article tricoté multicouche, qui présente une stabilité transversale et une élasticité transversale qui peuvent être spécifiquement ajustées, et comprend une armure de base dans au moins une de ses couches. Ladite armure de base est constituée d'une suite de premières rangées de mailles dans lesquelles une maille est formée avec la majeure partie des aiguilles actives, et de secondes rangées de mailles qui comprennent, pour la majeure partie, des flottés dont la longueur est égale à la distance séparant au moins deux aiguilles actives. Les séries successives de rangées de mailles correspondent aux exigences relatives à l'élasticité tranversale et à la stabilité transversale de l'article tricoté. Dans des zones plus élastiques de l'article tricoté, la proportion de premières rangées de mailles est plus grande que dans les régions transversalement stables, lesquelles présentent une proportion supérieure de secondes rangées de mailles.
EP97942778A 1996-09-05 1997-09-02 Article tricote multicouche elastique Expired - Lifetime EP0932715B1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
EP00128367A EP1092798B1 (fr) 1996-09-05 1997-09-02 Siège
EP00128366A EP1092797B1 (fr) 1996-09-05 1997-09-02 Tricot

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE19636208A DE19636208A1 (de) 1996-09-05 1996-09-05 Elastisches Mehrlagengestrick
DE19636208 1996-09-05
PCT/DE1997/001929 WO1998010127A1 (fr) 1996-09-05 1997-09-02 Article tricote multicouche elastique

Related Child Applications (2)

Application Number Title Priority Date Filing Date
EP00128367A Division EP1092798B1 (fr) 1996-09-05 1997-09-02 Siège
EP00128366A Division EP1092797B1 (fr) 1996-09-05 1997-09-02 Tricot

Publications (2)

Publication Number Publication Date
EP0932715A1 true EP0932715A1 (fr) 1999-08-04
EP0932715B1 EP0932715B1 (fr) 2003-02-26

Family

ID=7804813

Family Applications (3)

Application Number Title Priority Date Filing Date
EP00128366A Expired - Lifetime EP1092797B1 (fr) 1996-09-05 1997-09-02 Tricot
EP97942778A Expired - Lifetime EP0932715B1 (fr) 1996-09-05 1997-09-02 Article tricote multicouche elastique
EP00128367A Expired - Lifetime EP1092798B1 (fr) 1996-09-05 1997-09-02 Siège

Family Applications Before (1)

Application Number Title Priority Date Filing Date
EP00128366A Expired - Lifetime EP1092797B1 (fr) 1996-09-05 1997-09-02 Tricot

Family Applications After (1)

Application Number Title Priority Date Filing Date
EP00128367A Expired - Lifetime EP1092798B1 (fr) 1996-09-05 1997-09-02 Siège

Country Status (5)

Country Link
US (1) US6227010B1 (fr)
EP (3) EP1092797B1 (fr)
JP (1) JP2001505258A (fr)
DE (4) DE19636208A1 (fr)
WO (1) WO1998010127A1 (fr)

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DE59711754D1 (de) 2004-08-05
DE19636208A1 (de) 1998-03-12
EP0932715B1 (fr) 2003-02-26
EP1092798A2 (fr) 2001-04-18
EP1092798A3 (fr) 2002-03-27
EP1092797B1 (fr) 2004-07-21
DE59711798D1 (de) 2004-08-26
JP2001505258A (ja) 2001-04-17
WO1998010127A1 (fr) 1998-03-12
EP1092798B1 (fr) 2004-06-30
EP1092797A2 (fr) 2001-04-18
US6227010B1 (en) 2001-05-08
DE59709409D1 (de) 2003-04-03
EP1092797A3 (fr) 2002-03-27

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