EP0748889B1 - Procédé pour la fabrication d'un tricot entretoise et tricot entretoise ainsi obtenu - Google Patents

Procédé pour la fabrication d'un tricot entretoise et tricot entretoise ainsi obtenu Download PDF

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Publication number
EP0748889B1
EP0748889B1 EP96109291A EP96109291A EP0748889B1 EP 0748889 B1 EP0748889 B1 EP 0748889B1 EP 96109291 A EP96109291 A EP 96109291A EP 96109291 A EP96109291 A EP 96109291A EP 0748889 B1 EP0748889 B1 EP 0748889B1
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EP
European Patent Office
Prior art keywords
pile
portions
gpf
backing
backing cloth
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.)
Expired - Lifetime
Application number
EP96109291A
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German (de)
English (en)
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EP0748889A3 (fr
EP0748889A2 (fr
Inventor
Frank Helbig
Frank Vettermann
Dietmar Reuchsel
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Cetex Chemnitzer Textilmaschinenentwicklung gGmbH
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Cetex Chemnitzer Textilmaschinenentwicklung gGmbH
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Publication of EP0748889A2 publication Critical patent/EP0748889A2/fr
Publication of EP0748889A3 publication Critical patent/EP0748889A3/fr
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Publication of EP0748889B1 publication Critical patent/EP0748889B1/fr
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    • 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
    • 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
    • D10B2403/022—Lofty fabric with variably spaced front and back plies, e.g. spacer fabrics
    • D10B2403/0221—Lofty fabric with variably spaced front and back plies, e.g. spacer fabrics with at least one corrugated ply

Definitions

  • the invention relates to a method for producing a spacer knitted fabric on a warp knitting machine, in particular on a right / right double-knitting machine, and according to the method of the invention spacer knitted fabric manufactured.
  • spacer textiles on warp knitting machines, in particular Raschel machines, is well known.
  • spacer fabrics are understood to mean a textile fabric which consists of two flat, equidistant, patterned or unpatterned basic goods areas exists between which there are two basic goods Extend pile threads. Spacer fabrics of this type are already found to be varied Application.
  • EP-A-0 617 152 describes a variable thickness spacer fabric. According to the summary, this can also be used on warp knitting machines and not only on Flat knitting machines are manufactured and consequently initially has one Structure with equidistant top surfaces. The variable thickness is only subsequently achieved with the help of physical or chemical processes.
  • the invention is therefore based on the object with spacer fabrics different local distance of the basic goods regardless of the Generate configuration of the knitting machine used for manufacturing.
  • claims 15 and 16 disclose inventive features a goods processed according to the procedure.
  • FIG. X.1 is a schematic representation of the Position of basic goods and pile thread segments in relation to the two Needle bar of the warp knitting machine used to carry out the process can be seen, the direction of view of the direction of extension of the goods corresponds, while the sub-figure X.2 is a representation of the processed goods from sub-figure X.1 after being deformed into a contoured spacer contains.
  • the method according to the invention includes the essential feature Producing a contoured, d. H. with zones with locally different Distance of the basic goods provided spacer knitwear on two equidistant, uncontoured needle bars, especially on a Raschel machine are studded with latch needles.
  • the laying of Warp and pile threads and possibly also partial weft threads are used in a conventional manner Wise laying rails.
  • 1.1 shows a relatively simple variant of a knitted spacer fabric that can be produced using the method according to the invention. It is divided into two different sections A and B.
  • a basic product G 1 On the upper needle bar in the drawing (which is identified in the following by the leading index 1), a basic product G 1 is worked, the sections G 1A and G 1B of which are connected to one another (closed basic product) and which consequently extend over the two without interruption Sections A and B extends.
  • separate basic goods sections G 2A and G 2B open basic goods
  • a first embodiment variant of the method according to the invention now provides that in section A the basic goods sections G 1A and G 2A face each other directly, while in section B the basic goods section G 2B is laterally offset from the basic goods section G 1B .
  • pile threads are laid between the basic goods sections with the aid of laying rails which oscillate back and forth between the needle bars and are integrated into the two basic goods.
  • the pile threads P A and P B extend approximately perpendicular to the basic goods sections.
  • the length I A of the pile thread segments P A thus corresponds to the distance a of the needle bars.
  • such a section is also referred to as a "short pole section".
  • section B on the other hand, the length I B of the pile thread segments P B exceeds the distance a of the needle bars by an amount which can easily be determined from the Pythagorean theorem.
  • Such a section also bears the designation "long-pole section" in the claims.
  • the method according to the invention provides for the fabric, which has been worked with equidistant basic fabric sections up to the phase described above, to be formed into a spacer knitted fabric in the actual sense, ie with a locally different spacing of the basic fabrics.
  • this takes place in that the congruence is established between the basic goods sections G 1B and G 2B and then the pile thread segments P B likewise extend approximately perpendicularly between the basic goods sections G 1B and G 2B .
  • the resulting knitted spacer fabric has an L-shaped cross section.
  • the spacer knitted fabric in the example according to FIGS. 2.1 and 2.2 is divided into three sections A, B, and C analogously to the example described above.
  • the basic goods sections G 1A , G 1B and G 1C are in turn connected to one another and form a closed basic product.
  • the basic goods sections G 2A , G 2B and G 2C form an open basic product.
  • the characteristic difference, for example according to FIGS. 1.1 and 1.2, is now that the basic goods sections G 2A and G 2C are offset in different directions from the basic goods sections G 1A and G 1C , but by the same amount.
  • the result of this is that different laying rails are used to lay the pile thread segments P A , P B and P C.
  • the forming of the knitted fabric into spacer knitted fabrics leads to an isosceles U-profile (Fig. 2.2).
  • This embodiment of the method is further varied in the example according to FIGS. 3.1 and 3.2, in that the basic goods section G 2A is offset by a different amount from the basic goods section G 1A than the basic goods section G 2C from the basic goods section G 1C .
  • the result after forming is a spacer knit with an unequal leg U-profile.
  • FIGS. 4.1 and 4.2 Another possible embodiment variant is shown in FIGS. 4.1 and 4.2.
  • the goods shown here also have three sections A, B and C.
  • the basic goods sections G 1B and G 1C or G 2A and G 2B are connected to one another and form a closed basic product, while between the basic goods sections G 1A and G 1B and G 2B and G 2C are not connected.
  • the lateral offset of the basic goods sections G 2A compared to G 2B and G 2C compared to G 1C was chosen differently, which in turn means that the pile threads P A , P B and P C are laid by three laying rails which can be displaced independently of one another.
  • the spacer fabric that is formed after the fabric has been formed has a Z-shaped profile with legs of unequal length.
  • FIGS. 5.1 to 6.2 A further possible variation of the method according to the invention is illustrated in FIGS. 5.1 to 6.2. While pile thread segments were always incorporated into the basic fabric sections in the previous examples, the invention also provides that sections G 1A to G 2C covered with pile threads can also be connected in any manner to the later intended use of the spacer knitted fabric also non-pile basic fabric sections. 5.1 and 5.2, these are the pole-free basic goods sections GPF 1 , GPF 2 and GPF 3 . While the pole-free basic goods sections GPF 1 and GPF 2 directly adjoin the basic goods section G 2A laterally, the non-polar basic goods section on the opposite goods side is connected to the basic goods section G 1B .
  • the invention now provides that after the previously described shaping of the goods into a contoured spacer knit fabric, the pile-free base fabric sections GPF 1 to GPF 3 are placed on the side flanks of base fabric sections covered with pile threads (FIG. 5.2).
  • the non-pile base material section GPF 1 covers the left side flank of the pile threads P A of section A
  • the non-pile base fabric section GPF 2 covers the left flank of the pile threads P B of section A which exceeds section A.
  • the non-pile basic goods section GPF 3 covers the entire free right flank of the pile threads P B of section B.
  • FIGS. 6.1 and 6.2 This example undergoes a further variation in FIGS. 6.1 and 6.2.
  • the goods shown here contain a pole-free basic goods section GPF 2 , which extends between the basic goods sections G 2A and G 2B , which would normally form an open basic product, and is also connected to these.
  • this means that the pile-free basic goods section GPF 2 in order to be able to cover the left free flank of the pile threads P B in section B, into the space between the pile threads P A and P B of the sections A and B must be inserted in the form of a loop (Fig.6.2).
  • the pole-free basic goods section GPF 1 is operated in the manner described above.
  • the invention also opens up the possibility of "indirect Legung ".
  • This is characterized in that the pile threads after they were integrated on a basic product side, through their laying rails not directly to the needles of the opposite needle bars that bind them be guided, but first with a certain lateral Offset to the last binding point over thread holding elements, which do not form a stitch, and only then via the one in the opposite Needle incorporating basic goods.
  • Such holding elements can for example free needles that are not involved in the production of basic goods be, after the consideration by a pile thread this the following First shoots out through the needle tongue to form a handle apply to the needle chest, but in the subsequent cycle of action do not form a stitch due to lack of consideration with another thread can and therefore throw off the pile thread handle formed again.
  • it is fundamentally irrelevant whether it is not stitch-forming thread holding elements on the side of the last integration the pile threads in the basic fabric or on the opposite basic fabric side are located. However, the can be realized more advantageously latter possibility.
  • 7.1 to 11.2 illustrate embodiments of the method according to the invention with "indirect laying".
  • 7.1 shows, in addition to the above explanations, a further essential feature of "indirect laying”: the corresponding basic goods sections G 1A and G 2A and G 1B are located in short pole sections (here section A) and in long pole sections (here section B) and G 2B opposite each other.
  • the pile threads P B after they were last integrated in the basic goods section G 2B , are placed over thread-holding elements on the side of the needle bar on which the basic goods G 1 are worked.
  • the pile thread guide initially moves back to the other needle bar with the basic product G 2 , following the working regime of a double-bar ratchet machine, but does not consider it there and then returns to the needle bar with the basic product G 1 to insert the pile threads P B there to insert the corresponding needles with the aim of integration into the basic goods section G 1B .
  • the pile threads P B are laid between the base fabric sections G 1B and G 2B with a "thread reserve", ie the length I B of the pile threads P B is greater than the distance a of the needle bars.
  • the size of the thread reserve depends directly on how large the lateral offset of the thread holding elements relative to the needles in the basic goods sections G 1B and G 2B is. In the subsequent cycle of action, the processes described take place in a mirror image between the two needle bars.
  • the forming of the knitted fabric into a contoured spacer fabric according to the invention takes place with indirect laying in that the distance between the basic fabric sections in the long-pole section B is increased beyond the distance a until the thread reserve of the pile threads P B is used up and this is a stretched position take in.
  • FIGS. 8.1 and 8.2 show an application of indirect laying analogously to the example according to FIGS. 2.1 and 2.2.
  • the short-pole section B is followed on both sides by long-pole sections A and C, in which the lateral offset of the pile threads P A and P C takes place in opposite directions to one another in order to generate the thread reserve.
  • the spacer goods produced according to the invention in turn have an isosceles, U-shaped cross section.
  • a different length of the legs can also be produced by a different width offset of the pile threads P A and P B.
  • Figures 9.1 and 9.2 illustrate that indirect laying opens up possibilities that go beyond direct laying.
  • the goods consist of two short-pole sections A and C, which enclose a long-pole section B between them.
  • the pile threads P B are temporarily placed in the manner described above over thread holding elements, which in turn are located outside the section C.
  • the basic condition for this is that the pile threads P B each extend between two rows of pile threads P C without looping around them, in order not to prevent the subsequent stretching of the pile threads P B when the goods are formed into a contoured spacer fabric with a T-shaped cross section.
  • this can be easily ensured by laying pile threads P C at most in every second row, at least in section C, while the pile threads P B are worked into the rows which are then left free.
  • the invention is with reference to FIG. 9.1. and 9.2 not limited to the fact that the thread holding elements must be located outside the adjacent basic goods section.
  • Fig. 10.1 there is also the possibility of temporarily placing pile threads P B belonging to a long-pole section B over thread-holding elements which, for. T. or only within the adjacent short pole section C.
  • thread-holding elements which, for. T. or only within the adjacent short pole section C.
  • needles located in section C that are not involved in the formation of the basic goods in this section can be used for this purpose.
  • the finished spacer has a T-shaped cross-section (Fig. 10.2).
  • both basic goods G 1 and G 2 are designed as closed basic goods. This construction makes it possible to carry out the shaping into the contoured spacer goods in such a way that both basic goods sections G 1A and G 2A or G 1C and G 2C are lifted out of the planes described by the basic goods sections G 1B and G 2B in the short-pile section B until the pile threads P A and P B reach full extension. This creates a spacer with a double T-shaped profile.
  • FIGS. 12.1 and 12.2 A further, particularly advantageous embodiment of the method according to the invention is shown in FIGS. 12.1 and 12.2. It makes it possible to create a mechanical connection between adjacent sections of different pile thread length, which leads to a particularly good cohesion also being produced in the finished, contoured spacer knitted fabric between these two adjacent sections.
  • pile thread PF is used for this. This is preferably placed only over the outermost needle of section B with the shorter length of pile threads P B and thus also preferably only integrated into the outer wale M facing section A with the longer pile threads P A.
  • a separate laying rail guiding the pile thread PF underlies the area A with the longer pile threads P A under at least one needle of this section A and remains in the area of this for so long Nadelgasse until at least one row of pile threads P A was laid and integrated into the corresponding basic goods sections G 1A and G 2A . Only then is the pile thread PF tied back into the wale M without excess length and thus wraps around a series of pile threads P A in section A. When the goods are subsequently contoured, the pile threads P A thus "caught” are pulled through the loop formed by the pile thread PF and held by the latter also close to the edge of section B. The introduction of such a pile thread is also possible between two adjacent long pole sections.
  • pile threads only in every mth row of stitches and in every nth stitch, so that the density or the distribution of the pile threads in the sections can be influenced in a targeted manner can.

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  • Textile Engineering (AREA)
  • Knitting Of Fabric (AREA)

Claims (16)

  1. Procédé pour fabriquer un tissu à mailles à double épaisseur, qui présente des tissus de base (G1 ; G2) se faisant face avec un espace intermédiaire localement variable, en produisant les tissus de base (G1 ; G2) et en liant de part et d'autre des réseaux de fils poils s'étendant entre les tissus de base (G1 ; G2), caractérisé en ce que le tissu à mailles à double épaisseur est tricoté sur deux barres à aiguilles équidistantes et sans contour particulier d'un métier-chaíne, et en ce qu'il est constitué de sections à fils poils courts adjacents (A ; B ; C) dont la longueur des segments de fil poil (PA ; PB ; PC) est égale à l'écartement (a) des barres à aiguilles, et de sections à fils poils longs (A ; B ; C) dont la longueur des segments de fil poil (PA ; PB ; PC) est supérieure à l'écartement (a) des barres à aiguilles.
  2. Procédé selon la revendication 1, caractérisé en ce que des sections de tissu de base (A ; B ; C) sont tricotées en étant directement reliées entre elles en tant que tissu de base fermé.
  3. Procédé selon la revendication 1, caractérisé en ce que des sections de tissu de base (A ; B ; C) sont tricotées en n'étant pas directement reliées entre elles en tant que tissu de base ouvert.
  4. Procédé selon la revendication 1, caractérisé en ce que, dans les sections à fils poils longs, les segments de fil poil (PA ; PB ; PC) sont liés à des sections du tissu de base dont l'une est adjacente à une section à fils poils courts et est relié à cette dernière, mais dont l'autre est décalée latéralement dans la direction de l'étendue de la barre à aiguilles.
  5. Procédé selon la revendication 1, caractérisé en ce que, dans des sections à fils poils longs, les segments de fil poil (PA ; PB ; PC) sont liés à des sections des tissus de base (G1 ; G2) se faisant face, dans la mesure où ils sont tout d'abord passés sur des éléments maintenant les fils poils, qui ne forment pas de mailles et qui sont décalés latéralement dans la direction de l'étendue longitudinale des barres à aiguilles par rapport aux éléments formant les mailles qui tricotent le tissu de base (G1; G2), puis sur les éléments formant les mailles, qui tricotent le tissu de base (G1; G2), de la barre d'aiguilles opposée, avant d'être liés au tissu de base (G1; G2).
  6. Procédé selon l'une ou plusieurs des revendications 1 à 5, caractérisé en ce que des sections de tissu de base exempts de fils poils (GPF1 ; GPF2 ; GPF3 ; GPF4) font suite à des sections de tissu de base (G1A, G1B, G1C ; G2A ; G2B ; G2C) auxquelles sont liés des segments de fil poil (PA ; PB ; PC).
  7. Procédé selon l'une ou plusieurs des revendications 1 à 6, caractérisé en ce que des sections de tissu de base exemptes de fils poils (GPF1 ; GPF2 ; GPF3 ; GPF4), qui s'étendent entre deux sections de tissu de base (G1A ; G1B ; G1C ; G2A ; G2B ; G2C) auxquelles sont liés des fils poils, sont reliés à au moins une section de tissu de base (G1A ; G1B ; G1C ; G2A ; G2B ; G2C) à laquelle sont liés des fils poils.
  8. Procédé selon la revendication 4, caractérisé en ce que le décalage latéral de la section de tissu de base (G1A ; G1B ; G1C ; G2A ; G2B ; G2C) varie pendant le tricotage.
  9. Procédé selon la revendication 5, caractérisé en ce que l'ampleur du passage sur des éléments maintenant les fils poils qui ne forment pas de mailles varie au cours du tricotage.
  10. Procédé selon la revendication 5, caractérisé en ce que, au niveau de la transition entre des sections de tissu de base (G1A ; G1B ; G1C ; G2A ; G2B ; G2C) présentant des segments de fil poil de différentes longueurs (PA ; PB ; PC), au moins un fil poil est incorporé, qui est relié au bord du tissu de base (G1 ; G2) de la section (A ; B ; C) comportant les fils poils plus courts (PA ; PB ; PC) avec un écart d'au moins une rangée de mailles à chaque fois, et entoure entre ses points de liaison au moins un segment de fil poil (PA ; PB ; PC) issu d'au moins une rangée de mailles de la section (A ; B ; C) comportant les fils poils plus longs (PA ; PB ; PC).
  11. Procédé selon l'une ou plusieurs des revendications 1 à 10, caractérisé en ce qu'après achèvement du processus de tricotage, on réalise des formes en relief à partir de sections (A ; B ; C) à segments de fil poil plus longs (PA ; PB ; PC) par le biais de sections (A ; B ; C) à segments de fil poil plus courts (PA ; PB ; PC).
  12. Procédé selon les revendications 1, 4 et 11, caractérisé en ce que les structures en relief sont réalisées en faisant se chevaucher, dans des sections (A ; B ; C) à segments de fil poil (PA ; PB ; PC) dont la longueur est supérieure à l'écartement des barres à aiguilles, les sections de tissu de base décalées latéralement les unes par rapport aux autres (G1A ; G1B ; G1C ; G2A ; G2B ; G2C).
  13. Procédé selon les revendications 1, 5 et 11, caractérisé en ce que les structures en relief sont réalisées dans la mesure où, dans des sections (A ; B ; C) à segments de fil poil (PA ; PB ; PC) dont la longueur est supérieure à l'écartement des barres à aiguilles, l'intervalle entre les sections de tissu de base se faisant face (G1A ; G1B ; G1C ; G2A; G2B; G2C) est agrandi jusqu'à ce que les segments de fil poil (PA, PB ; PC) soient complètement tendus.
  14. Procédé selon l'une ou plusieurs des revendications 1 à 13, caractérisé en ce que des sections de tissu de base exemptes de fils poils (GPF1 ; GPF2 ; GPF3 ; GPF4) sont appliquées contre des flancs de sections de tissu de base comportant des fils poils (G1A ; G1B ; G1C ; G2A ; G2B ; G2C).
  15. Tissu à mailles à double épaisseur, composé de tissus de base (G1 ; G2) se faisant face avec un espace intermédiaire localement variable, et de réseaux de fils poils s'étendant entre les tissus de base (G1 ; G2) et liés de part et d'autre à ces derniers, caractérisé en ce que, au niveau de la transition entre des sections de tissu de base (G1A ; G1B ; G1C ; G2A ; G2B ; G2C) présentant des segments de fil poil de différentes longueurs (PA ; PB ; PC), au moins un fil poil de jonction (PF) est incorporé, qui est relié au bord du tissu de base (G1 ; G2) de la section (A ; B ; C) comportant les fils poils plus courts (PA ; PB ; PC) avec un écart d'au moins une rangée de mailles à chaque fois, et entoure entre ses points de liaison au moins un segment de fil poil (PA ; PB ; PC) issu d'au moins une rangée de mailles de la section (A ; B ; C) comportant les fils poils plus longs (PA ; PB ; PC).
  16. Tissu à mailles à double épaisseur composé de tissus de base (G1 ; G2) se faisant face avec un espace intermédiaire localement variable, et de réseaux de fils poils s'étendant entre les tissus de base (G1 ; G2) et liés de part et d'autre à ces derniers, caractérisé en ce que des flancs de sections de tissu de base comportant des fils poils (G1A ; G1B ; G1C ; G2A ; G2B ; G2C) sont recouverts par des sections de tissu de base exemptes de fils poils (GPF1 ; GPF2 ; GPF3 ; GPF4).
EP96109291A 1995-06-16 1996-06-11 Procédé pour la fabrication d'un tricot entretoise et tricot entretoise ainsi obtenu Expired - Lifetime EP0748889B1 (fr)

Applications Claiming Priority (2)

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DE19521443 1995-06-16
DE19521443A DE19521443C2 (de) 1995-06-16 1995-06-16 Verfahren zur Herstellung einer Abstandswirkware sowie danach hergestellte Abstandswirkware

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EP0748889A2 EP0748889A2 (fr) 1996-12-18
EP0748889A3 EP0748889A3 (fr) 1998-07-22
EP0748889B1 true EP0748889B1 (fr) 2001-12-19

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DE4301242A1 (de) * 1993-01-19 1994-07-21 Olbo Textilwerke Gmbh Verfahren und Einrichtung zur Herstellung textiler Abstandsflächengebilde
DE59408647D1 (de) * 1993-02-22 1999-09-30 Keiper Recaro Gmbh Co Abstandstextilmaterial variabler Dicke, Herstellungsverfahren und Verwendungen dazu
US5385036A (en) * 1993-05-24 1995-01-31 Guilford Mills, Inc. Warp knitted textile spacer fabric, method of producing same, and products produced therefrom

Also Published As

Publication number Publication date
EP0748889A3 (fr) 1998-07-22
DE19521443C2 (de) 2001-04-19
DE19521443A1 (de) 1996-12-19
EP0748889A2 (fr) 1996-12-18
DE59608477D1 (de) 2002-01-31

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