DE2338533A1 - SMALL WIDTH TAPE MADE OF CHAIN KNITTED PRODUCTS - Google Patents

Description

DIPL.-PHYS. DIPL.-ING. 8 MUNICH 25 LIPOWSKYSTR. 10

Parema Limited. p-pa-lo

L / Sun 7/27/1973

Narrow width band made of warp knitted fabric (narrow fabric)

The invention relates to narrow fabrics, for example as cords, braids, ribbons, braids, etc., and in particular Can be used as shoelaces or shoelaces.

Shoelaces are traditionally made by a braiding process in which spools of yarn are inserted one after the other a substantially circular path are moved over and under each other. Such a braiding process is made possible it is only a matter of making only one shoelace with a machine at a low working speed, but not several shoelaces at the same time. Therefore, in practice there are numerous machines and a corresponding one Maintenance expenditure and corresponding monitoring are required for a certain production output of shoelaces.

The object of the invention is to create shoelaces or other narrow fabrics that are produced by a knitting process can be produced in which essentially only reciprocating active movements are used. Through the Invention is to be created at the same time a method with which it is possible simultaneously on one and the same Machine a plurality of laces or other

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ORIGINAL INSPECTED

To produce narrow fabrics.

The invention is characterized in claim 1.

Preferred embodiments and developments of Invention emerge from the subclaims.

One of the ribs or a group of adjacent ribs can have a larger volume than an adjacent rib or have a group of adjacent ribs, and the narrow fabric can have a rounded cross-section. Preferably then all ribs of the narrow fabric are connected to one another to form a closed chain. Particularly It is advantageous if there are three to seven ribs in the narrow fabric. When all the ribs are closed Forming chain, the rib volume on one side of the chain can be greater than that on the opposite Side, and the volume of the intervening ribs can have a gradual transition from the high-volume to the low-volume side.

In another embodiment of the invention, has the narrow weave has two sets of ribs that are flexibly connected to one another, for example by one in between lying area of lesser volume and strength. The narrow fabric then contains a pair of ribs, one at a time a rib of each set partially knitted with an elastic yarn or thread that joins the pair of ribs against each other pulls. In this second embodiment, the narrow fabric a flat, ribbon-like appearance. Preferably, each set of ribs is balanced with respect to the other, and each set contains the same number of ribs. The sentences

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can be flexibly connected to one another in that the opposing ribs of the Pair are forfeited with a yarn that has a smaller volume compared to the rest of each set, or in that a-inserted weft thread in with transverse distances provided "pillars" is arranged. The elastic yarn or thread can be made of rubber, but preferably it is a fine size elastomeric yarn, for example 14o denier. The by the elastic yarn Interconnected pairs of ribs are preferably on the outer edge of each set or at a distance of 1 or 2 ribs placed from the outside edge of each set so that the two sets are firmly connected to each other. T) ie at One side by the elastic yarn interconnected pairs of ribs are preferably by fewer than four ribs of the fabric on the other side separated from each other.

The narrow warp knitted fabric is preferably formed predominantly from flat 1 χ 1 chain loops, but a double one 1 χ 1 chain or a tricot fabric can also be used. In order to give the narrow fabric additional volume or additional strength, one or more straight weft threads can be used be inserted. Filling threads, including inlaid layers or wraps (inlaid laps), can also be provided. The yarn is preferably generally relatively thick (bulked), textured or curled, and can in principle any Have quality. However, it is preferably in the range between 7 o and 100 denier, again the range around 200 denier is preferred. The yarn can consist of synthetic fibers, for example polyamide, polyester or Polyacrylonitrile. Preferably, the volume is varied according to the requirements in that the number of threads

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is changed in the ribs. Vm an additional strength

can create a pull cord within the closed Chain must be inserted.

The invention also relates to a method for producing a narrow-width tape as characterized in claim 19. This process can be carried out on warp knitting machines that are similar to crochet machines
work as done by the Kohler company in Switzerland
getting produced. Using such a machine, a plurality of narrow fabrics can be knitted at the same time.

The narrow fabrics and tapes according to the invention are strong and resistant to running stitches, as lock stitches
(lock-stitches) can be used. The goods produced according to the invention can be tied into stable and strong knots. The narrow weave can be produced in considerable quantities compared to the conventional braiding machines and it can contain drawstring.

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Embodiments of the invention are described below described on the basis of the drawing:

Figure 1A is an inside view of one embodiment of the narrow fabric according to the invention,

Pig. 2A is a view of the inside of a second embodiment of the narrow weave,

Fig. 3A is a view of the inside of a third Embodiment of the narrow fabric,

Figure 4A is a view of the inside of a fourth Embodiment of the narrow fabric,

Figure 5A is a view of the inside of a fifth Embodiment of the narrow fabric,

6A is a view of the inside of a sixth embodiment of the narrow fabric,

Fig. 1 B to 6 B are cross sections through the narrow fabric according to Figures 1 A to 6 A,

Fig. 1 C, 1 D, 1 E, 3 Ο, 3 D, 3 E, 4 C, 4 D, 5 C, 5 D 'and G, 6 D and β E are thread guide diagrams (lapping diagrams) for production the narrow fabric according to Figures 1 A to 6 A,

7 A, 7 B are thread guide diagrams (lapping diagrams). a seventh embodiment of the narrow fabric,

Fig. 8 is a perspective view of a portion of the knitting head or font of a warp knitting machine for producing the narrow fabric according to Figure 5 A.

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In the embodiment according to FIGS. 1A to 1E, a narrow fabric has six ribs W · ,, Wp, W ,, Wj ,, W ₁ - and Wg, which form a closed chain, the ribs W and Wg through are tied together by a thread that is not drawn into any of the other ribs. In FIG. 1A, the narrow fabric is shown with the thread stretched or pulled out in order to show the inside of the fabric. The structure of the fabric is further explained by the knitting diagrams (lapping diagrams) 1 C, 1 V and 1 E, which show the movement of a first chain bar (warp beam), a second chain bar (warp beam) and a feeder for an inserted thread. Strands F ₂ through Fg of three strands of doubled, unbleached, curled nylon thread of 78 denier are moved through guides on the first chain bar (warp beam) in a 1x1 pattern, and strands F, and F ₇ are passed through the chain bar (warp beam) provided on the weave edges of the fabric. The strands F _{1 and F 7} comprise a single thread of doubled, unbleached, crimped nylon yarn of jS denier and serve to form a rib of interconnected, superposed knitted loops or stitches at the selvedges or selvedges. The feeder for the inserted thread Fo runs back and forth transversely in order to let the thread go back and forth over the ribs W to Wg. A strand Fq of a thread made of a yarn S 1 083 with 210 denier known under the registered trademark "Lyera" is passed transversely from the rib W- to the rib Wg via the ribs W ₂ to W ₁ - under tension from 30 to 46 grams, measured with a Schmidt tension meter TRL 3, so that the strand F _Q extends in the manner shown in Figure 1A. When the goods are squeezed off the needles, the strand F _Q pulls them into the shape shown in FIG. 1B.

The narrow fabric shown in Figures 2 A and 2 B is the same as that shown in Figure 1 A with the exception that a pull cord F _{10 is} inserted between the strands, the

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the ribs W, to W, - form, and the strand F _Q , which connects the ribs W, and Wg with each other. This can be done in that the pull cord is fed to the needles in a position between the first and the second warp beam. The pull cord P ₁₀ is shown in Figure 1 D in dashed lines. -

In the exemplary embodiment according to FIGS. 3A to 3E, a narrow fabric has eight interconnected ribs W to Wo, of which the ribs W ₂ to W ₇ . form a closed chain and of which the ribs W and Wo are connected to the other ribs on one side only. The construction of this fabric is explained in more detail by the lapping diagrams 3 C, 3 D and 3 E, which illustrate the movement of a first warp beam or a first chain bar, a second warp beam or a second chain bar and the movement of the feeder for inserted threads. The strands Fp to Fg are moved in a flat 1x1 knitting pattern through guides on the first warp beam, and the strands F and Fq are moved simultaneously, so that a regular selvedge results. The strands F 1 to Fj and the strands Fg to Pq consist of two strands of a curled, unbleached, doubled nylon yarn of 78 denier. The strand F ₅ consists of a single thread of such a yarn and forms a weakened, slightly folded area. A strand F _{10 of} a Lycra yarn (type S 1083 with 210 denier) is moved transversely through the second warp beam or the second chain bar, namely under a tension of 44 to 46 grams, measured with the Schmidt tension meter. The transverse movement takes place over five needle spaces in order to connect the ribs Wp and W _{7 to} one another, while the strand F ₁₀ passes over the ribs W- to Wg. The strand F ₁₀ is passed across the needle, reducing the length of the thread knitted into the fabric and reducing the amount of yarn visible on the outside of the fabric. A pair of strands F ₁₁ and F ₁₂ are moved so that they have four needle spaces in the rib "

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Set W-, to W ₂ , or in the set of ribs W ₁ - to Wn, where they do not affect the weakened zone formed by the line P, -. When the fabric is squeezed off, the strand P ^ ₀ causes the fabric to split along the weakened zone until the ribs W ₁ to W 2 and Wp to Wg lie on top of one another, resulting in a balanced, flat band.

In the exemplary embodiment according to FIGS. 4 A to 4 D, the narrow fabric has five interconnected ribs W to Wj. Which form a closed chain. The structure of this tissue is explained in more detail using the lapping diagrams in FIGS. 4G and 4D. Strands of crimped nylon yarn F ,, Fp, F-, and F ₂ , are moved through guides in a flat 1 χ 1 warp knitting pattern. A strand F ₁ - of crimped nylon yarn is moved across four needle gaps to connect the outer ribs W, and W, - in successive passes, with the strand Ff- over all intervening ribs Wp, W, and W ₂ , crosses away. The strand F ₁ - is kept under constant tension. The thread of strands F-, and F ^ consists of a two-component yarn with 140 denier. The thread of strands Fp and F ^ ₅ consists of seven such component yarns. The thread of strand F ₁ - consists of three such component yarns. The stitches or loops of two successive passages of the rib W- * therefore consist of 14 component threads, those of the ribs W ₂ and W ₁ of 9 component threads and those of the ribs W and Wp. Of 5 component threads. The volume of each of the ribs W ₁ to W 1 changes in proportion to the number of component threads in the stitches or loops. In this way, in the _{narrow fabric, the ribs W 2} and W ₂ , from the thick rib W., are pressed upwards, and the ribs W, and Wj_ are pulled inward by the strand F, so that approximately the in Figure 4B results in the shape shown. Optionally, the fabric can be reinforced by an inserted thread Fg and by weft threads F ₇ and Fg

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to give the fabric a denser structure. This narrow weave can be used for shoelaces.

In the exemplary embodiment according to FIGS. 5 A to 5 D, the narrow fabric has eight interconnected ribs W ₁ to W n, of which the ribs W 2 to W 1 form a closed chain and of which the ribs W 1 and W g only on one side connected to the other ribs. This tissue is explained in more detail by the lapping diagrams 5C and 5D. Strands F ₂ to Fg made of crimped nylon yarn are moved in a flat 1x1 warp knitting pattern. Strands F- and Fq are provided in order to produce a regular selvedge. These strands are also made of crimped nylon thread. A strand F-, _Q of thin elastomeric yarn is passed under tension over five needle gaps in order to connect the ribs Wo and W _{7 to} one another and to cross the ribs VJ- to Wg between them. The yarn of the strand Fj- consists of two component threads, while the strands F-, to F ₂ , and Fg to Fq consist of a yarn that has seven uniformly thick component threads. In this way, the ribs Ww and W ₁ - are only loosely connected to one another in comparison to the connection between the remaining, adjacent ribs. The elastomeric strand F ₁₀ thus causes the sets of ribs Wh to W, and W ₁ - to Wg to fold twice over one another, the area occupied by the strand Fp- being used as a fold or fold.

The fabric is reinforced by inlaid yarns F ₁₁ and F _12, which are shown 5 D in dashed lines in figure, and the four needle spaces in the rib sets W ₁ to W ^ and W ₁ - to Wg cross, with the range of the strand Fj - is not influenced. Weft threads or pull threads F ₁ to F ₁ g are provided, as shown in dashed lines in FIG. 5D.

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In the exemplary embodiment according to FIGS. 6 A to 6 E, the narrow fabric has six ribs W. to Wg. The ribs Wp and Wu are connected directly to one another by an elastomeric yarn which does not engage in any of the other ribs. In FIG. 6 A, the fabric is shown in the unfolded state with the connecting yarn exposed. The structure of this fabric is explained in more detail using the lapping diagrams 6, 6 T) and 6 E, which show the movement of a first lower chain rod or a first lower warp beam, a second upper warp beam and feeders for the inserted threads. The strands F-, to F "are moved in a 1 × 1 pattern, and the strand Fg feeds an elastomeric Lycra yarn of 21o denier under a tension of 44-46 grams. The strands F _Q and F. form inserted threads which extend over the ribs W. to W-, or W ₂ , to V / g. When the tissue is peeled off, it is drawn into the shape shown in Figure 6B. The fabric shown in FIG. 6A can easily be produced in conjunction with the fabric shown in FIG. 1A. The same thread components and the same strands can be used. Only the transverse movement of the strands Fq or F. and that of the strand Fg need to be changed.

In the exemplary embodiment according to FIGS. 7 A and 7 B, the basic pattern consists of a double 1 χ 1 warp fabric (strands F ^ to F ^ and F ₁ - to Fg), its weaving edges or edge ribs W ₁ and. W, _ together through strands F _n and F ₁

X O y IO

are connected that cross the intermediate ribs W ₂ to Ww. The amount of yarn is varied by changing the number of component threads in each strand in order to obtain an amount distribution similar to that according to FIG. 1A. The resulting fabric has a

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rounded appearance.

Part of the fontur of a warp knitting machine, which is suitable for the production of the fabrics described above, is shown in FIG. The machine is for example a 5 and 6 gauge crochet knitting machine with a single Needle bar, which is a special type from Kohler & Co. AG will be produced.

The Fontur of the knitting machine has a set of latch needles 2, which on a needle bed 4 with the help of a Needle plate 6 and a cover plate 8 are mounted, which clamp the needles between them. The needle bed 4 can • move back and forth in the direction of arrow A. After exiting the needle bed 4, the needles 2 go through individual needle channels Io, which are formed in a knock-off rod 12, which in turn through a rigidly mounted frame 14 is supported. A splint 16 retaining the tissue is opposite the Front of the tee bar 12 attached. The splint 16 extends into the vicinity of the needles 2. One • Tongue bar 18 for opening the tongues of the needles 2 is arranged at a distance from the knock-off rod 12. Guides 2o for feeding the yarn to be knitted with guide holes 21 are in two sets of guide or Chain rods (warp beams) 22 and 25 attached, each a rod or a warp beam is available for each guide set. By moving in the direction of arrow B the guides can carry the supplied yarn as it passes through the arrow C is shown, insert into the hooks of the needles 2. The guide rods or beams 22 and 2j5 are individually controlled to reciprocate the guides in the direction of arrows D transversely. About that

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Tee rod 12 is a pair of weft rods 24 and arranged on which thread guide inserts by clamping 26 a and 26 b and 27 a to 27 f are arranged. Yarn is fed to these inserts in the direction of arrow E. und'die rods 24 and 25 can be moved individually and optionally transversely in the direction of arrow F, so that either a weft thread or inlaid laps can be introduced. The individual needles are with W, marked to Wg »

A number of clustered knives as previously described are across the full width the needle bar of the knitting machine arranged. A number of take-up rollers are arranged underneath the fountain peel off newly knitted fabrics under a substantially constant tension.

As an exemplary embodiment, the production of a narrow fabric, as shown in FIG. 5A, will now be described. Sharn is fed to 9 guides 20 on the rod 23, which is moved back and forth in the pattern shown in solid lines in FIG. 5C , so that a flat Ix 1 warp fabric results. The yarn going back and forth between the needles Wj and W ₁ - has a smaller yarn count or a greater fineness than the other yarns fed to the 9 guides. An elastomeric thread is fed to a guide 2o on the rod 22 which is moved back and forth in the pattern shown in solid lines in FIG. 5D. The guide 2o on the rod 22 is moved back and forth below the guide 2o on the rod 23. The elastomeric thread is thereby stretched considerably. The inserts 27 a to 27 f are placed on the rod, which is held stationary so that see the

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ORIGINAL INSPECTED

Inserts between adjacent needles W, and Wp or Wp and W-. or W and W ^ or W ₁ - and W, - or W / - and W ₇ , or W ₇ and Wg extend. 'The stakes

26 a and 26 b are attached to the rod 24, the is reciprocated as shown in dashed lines in Figure 5D, see the outlet of the Inserts 26 a and 26 b are located above the needles,

In this way, a flat, tightly knitted fabric is formed _{between the needles W 1 and W ^ or the needles W 1 and W n, the elastomeric thread extending between the needles W 1 and W 7} . After the knocking off, the tissue runs down between the knock-off rod 12 and the rail 16 retaining the tissue. If that . If tissue emerges from the fontur, it is first doubled by folding it over the thin area formed between needles W ₂ , and Wp-, and then the tissue is fed between the take-up rollers. The subsequently exiting tissue is automatically doubled in the same way and held in place by the pulled elastomeric thread. The other fabrics described above can be produced on a similar machine in a completely analogous manner. Pull cords can be inserted using a stationary insert.

The knitting speed can be increased if lighter yarns are used, and the stitch density can be increased by the Trigger speed can be controlled. Here should care must be taken that the withdrawal speed is kept high enough so that the work can proceed, but is kept small enough to avoid an undesirable elongation of the loops formed by the needles or Avoid loops.

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Claims (1)

Expectations l.) Ribbon of small width made of warp fabric, characterized by a first rib and a second Rib on one side of the first rib, and a number of other ribs between the first and second ribs on the other side of the first rib. 2. Tape according to claim 1, characterized in that that the knitted fabric has 4 to Io ribs. 35. Tape according to claim 1 or 2, characterized in that that the first rib and the second rib comprise an elastomeric yarn that the first and the second rib connects and pulls them together against each other. 4. Tape according to claim 1 or 2, characterized in that that the first rib and the second rib are elastic, curled, thermoplastic Have endless thread connecting the first and second ribs and pulling them together against one another. 5. Tape according to one of the preceding claims, characterized characterized in that the first, second and further ribs are elastic, curled, thermoplastic Have endless threads that connect these ribs to one another. 6. Tape according to one of the preceding claims, characterized characterized in that the first, second and further ribs have stitches arranged in a 1x1 pattern are knitted to connect the ribs with each other. 309886/0998 ORIGINAL 7. Tape according to one of the preceding claims, characterized characterized in that the first., the second and the further ribs have at least one inserted thread. 8. Tape according to one of the preceding claims, characterized characterized in that the knitted goods are warp threads has, which are on the sides of the. Ribs extend. 9. Band pach one of the preceding claims, d a d u r cn characterized in that the first and the second Rib are connected to each other and to the other, intermediate ribs only in such a way that a band with rounded cross-section results in '. 10. Tape according to one of claims 1 to 8, characterized in that the first and the second Rib with each other, with the intervening ribs · and with other ribs that are connected to the intervening ribs on the opposite side of the first and the second rib, so that a flat band results. 11. Tape according to one of the preceding claims, characterized gekjennze i c hne t that the intervening Ribs are all of greater volume compared to the first and second ribs, so that there is resistance against folding along the intervening ribs. 12. Tape according to one of claims 1 to lo, characterized It is shown that the intervening ribs have a first section, the adjacent one 309886/09 98 ORIGINAL INSPECTED Connecting ribs to each other compared to sections on each side of the first section have a reduced volume, so that an area is formed which forms a fold between adjacent ribs. Ij5. Band according to one of the preceding claims, characterized gekennze i cn net that it has a pull cord, extending along the belt between the first, second and intermediate ribs. lh. Ribbon of narrow width made of warp knitted fabric, characterized by a first plurality of ribs which have an inserted weft thread which crosses the ribs transversely, a second plurality of ribs which have a further inserted weft thread which crosses the second plurality of ribs transversely, a suture interconnecting the first adjacent ribs on the side of the first and second plurality of ribs; and an elastomeric suture interconnecting other ribs that are one of the ribs on the side of the first and second plurality of ribs Spaced so that the first and second plurality of ribs fold together to form a flat, balanced band. 15. Tape according to claim l4, characterized by a d u r c h, that the first and second plurality of ribs have threads of equal thickness in a 1 χ 1 pattern are arranged to provide three ribs in each of the plurality of ribs. 16. Tape according to claim 14, characterized in that that the first and second pluralities of ribs comprise threads arranged in a 1 χ 1 pattern 309886/0998 are knitted around 4 ribs in each of the plurality of ribs to be provided, the ribs being formed by threads of the same thickness, with the exception of the thread, the adjacent one Ribs connected to one another on the side that has a reduced thickness compared to the other threads Has. IJ. Narrow width tape of warp knit fabric characterized by a plurality of ribs which have an inlaid weft thread which crosses the ribs transversely and which have an elastomeric thread which connects the ribs on either side of the plurality of ribs. l8. Band according to claim 17 ^ characterized in that that the plurality of ribs consists of 6 ribs. 19 · Method of making a ribbon * of narrow width (Narrow woven fabric), characterized in that a plurality of flat warp knitted fabrics are produced each having a plurality of interconnected ribs, of which at least the ribs of a pair are separated from one another by one or more other ribs, the ribs of this pair are connected to each other by a longitudinally extending, tensioned thread and allow that the tensioned thread pulls the ribs of the pair against each other so that the ribs of the majority of the Flat knitted fabrics are each pulled together in a closed chain of ribs to make a rounded or a to form a flat, balanced band. 2o. Ribbon made of narrow warp knitted fabric (narrow fabric), im essential as in 309886/0998 3refer to Figures 1 A to 1 Ξ or 2 A to 2 B or 3 A to j? Ξ or 4 A to 4 D or 5 A to 5 D or 6 A to 6 Ξ or 7 A to 7.3. 21. A method for producing a narrow-width band from warp-knitted fabric (narrow fabric) essentially as in Reference to 3 "i ;; ur 8 described. 309886/0998 Blank page