Cable needle

Abstract

The present invention includes: an elongated intermediate part 4 that is substantially linear; a first needle part 2 that is positioned on one side in a longitudinal direction of the intermediate part, and that includes an inclined section 21 having an outer shape that expands going from the intermediate part toward an end and a tip section 22 that narrows going toward the end; and a second needle part 3 that is positioned on the other side in the longitudinal direction of the intermediate part, and that includes an inclined section 31 having an outer shape that expands going from the intermediate part toward an end and a tip section 32 that narrows going toward the end in a more gradual manner than the first needle part . The present invention includes a colored section in which a dye has penetrated from the surface to inside. The colored section is provided so as to be able to identify the one side and the other side in the longitudinal direction of a cable needle, and a boundary between the colored section and a non-colored section is flat.

Description

Rope knitting needles

[0001] The present disclosure relates to rope knitting needles.

[0002] Cable knitting is a knitting technique that creates a rope-like crisscross pattern. In addition to the two main knitting needles, cable knitting also uses short cable knitting needles.

[0003] As you knit using the knitting needles, at the point where you want to form a rope pattern, remove the stitch you want to cross from the knitting needle and transfer it to the rope knitting needle. Knit the next stitch before the stitch you transferred to the rope knitting needle. Then knit the stitch you transferred to the rope knitting needle. By following this procedure, you can transfer the stitch to the rope knitting needle and knit the stitches back and forth, making it possible to cross the stitches like a rope. Transferring a stitch to the rope knitting needle is called "resting the stitch," and the stitch that is held on the rope knitting needle is called the "rest stitch."

[0004] Conventional rope knitting needles include those that are straight and those that have a curved portion. Patent Document 1 discloses a rope knitting needle that is curved in a U-shape, with one end elastically abutting against the other straight portion.

[0005] Jpn. Jpn. Examined Publication No. 61-033023

[0006] Rope knitting needles are formed short to make it easier to move stitches, so rest stitches can fall off the rope knitting needle. The rope knitting needles in Patent Document 1 are curved in a U-shape and are formed with closed ends. When the rope knitting needles are curved as in Patent Document 1, rest stitches are less likely to fall off, but there is a problem that the rest stitches cannot be moved smoothly, making it difficult to work with. Furthermore, when the rope knitting needles are curved, the rest stitches can be pulled when being moved, which can result in uneven stitches and an unattractive finish.

[0007] Straight rope knitting needles allow for smooth movement of rest stitches. This makes them easy to use and reduces the risk of pulling on rest stitches, making it easier to align stitches evenly. However, straight rope knitting needles have the problem of easily dropping rest stitches. Straight rope knitting needles with grooves in the direction intersecting the longitudinal direction to prevent rest stitches from being dropped are also commercially available. However, if grooves or other irregularities are formed on the surface of the rope knitting needle, there is a risk that the yarn will get caught there. Because the yarn that makes up the stitches is made of bundles of thin fibers, it can easily get caught on even slight unevenness formed on the surface of the rope knitting needle. If the yarn gets caught, the knitted stitches will not be beautifully aligned.

[0008] Furthermore, with conventional rope knitting needles, it was possible to accidentally knit a rest stitch with the rope knitting needle turned the wrong way. If, after transferring a rest stitch to the rope knitting needle, the rope knitting needle is turned the wrong way and another rest stitch is knitted, the order of the rest stitches will be reversed. This will result in an inconsistent rope knitting pattern, and the finished pattern will be unattractive. It is not advisable to mark the left and right orientation of the rope knitting needle with engravings or stickers. This is because engravings or stickers create irregularities on the surface of the rope knitting needle, which can cause the yarn to get caught in these irregularities. It is also not advisable to paint the surface of the rope knitting needle to prevent these irregularities from forming. This is because the surface of the rope knitting needle will wear down with use, causing the paint to disappear or transfer to the fabric.

[0009] In view of the above problems, the present disclosure aims to provide a rope knitting needle that is less likely to catch on yarn and has excellent workability.

[0010] In order to solve the above-mentioned problems, one embodiment of the rope knitting needle disclosed herein is a straight rope knitting needle comprising: a long and thin middle portion; a first needle portion located on one longitudinal side of the middle portion and having a sloping portion whose outer shape expands from the middle portion to the end portion and a tip portion which tapers further toward the end portion; and a second needle portion located on the other longitudinal side of the middle portion and having a sloping portion whose outer shape expands from the middle portion to the end portion and a tip portion which tapers more gradually than the first needle portion toward the end portion; wherein at least one of the first needle portion, the second needle portion, or the middle portion has a colored portion in which a dye has permeated from its surface to its interior, and the colored portion is arranged so that one longitudinal side and the other longitudinal side of the rope knitting needle can be distinguished from each other, and the boundary between the colored portion and the non-colored portion is flat.

[0011] In this configuration, the first and second needles located on both sides of the middle section expand in outer shape as they move from the middle section to the ends, making it difficult for rest stitches to move from the middle section and fall off. This allows for both good workability and the ability to prevent rest stitches from falling off. The space between the middle section and the first and second needles expands due to the inclined section, allowing the yarn to move smoothly without getting caught.

[0012] In addition, the colored portion allows the orientation of the rope knitting needle to be identified, preventing the user from accidentally knitting a rest stitch with the rope knitting needle turned in the wrong direction. The colored portion is permeated with dye from the surface to the interior, so the rope knitting needle does not have any protrusions on its surface due to the colored portion. The boundary between the colored portion and the non-colored portion is flat, so the yarn does not get caught on the surface of the rope knitting needle. Furthermore, the colored portion does not disappear even if the surface wears.

[0013] In addition, because the tip of the second needle tapers more gradually than the tip of the first needle, you can use the thin first needle and the thick second needle appropriately, improving workability. For example, when transferring a rest stitch from a knitting needle to a rope knitting needle, it is easier to transfer it from the thick second needle side. Also, when knitting a rest stitch, it is easier to knit using the thin first needle side.

[0014] In the rope knitting needle disclosed herein, the first needle portion and the second needle portion preferably have a flush flat surface that extends continuously through the intermediate portion.

[0015] By moving the rest stitch along the flat surface, the rest stitch can be moved more smoothly from the first needle part to the second needle part. Also, the flat surface can prevent the rope knitting needle from rolling.

[0016] The colored portion is preferably provided on the first needle portion or the second needle portion.

[0017] By providing a colored portion on the first needle portion or the second needle portion, the orientation of the rope knitting needle can be more clearly identified, which can further improve workability.

[0018] The rope knitting needles disclosed herein preferably include polyester resin and inorganic fibers.

[0019] The inclusion of polyester resin and inorganic fibers provides sufficient strength and heat resistance, making it possible to perform sublimation printing or penetration printing, and it is resistant to breakage and has excellent abrasion resistance in the colored parts.

[0020] As described above, according to the present disclosure, a rope knitting needle that is less likely to catch on yarn and has excellent workability can be provided.

[0021] 3 is a diagram showing a state in which the rope knitting needle of the present disclosure is used. FIG. 4 is a perspective view of the rope knitting needle of the present disclosure. FIG. 5 is a front view of the rope knitting needle of the present disclosure. FIG. 6 is a diagram showing the rope knitting needle of the present disclosure as viewed from a 45° angle. FIG. 7 is a cross-sectional view taken along line A-A in FIG. 3. FIG. 8 is a diagram showing the procedure for rope knitting. FIG. 9 is a diagram showing the procedure for rope knitting. FIG. 10 is a diagram showing the results of bending and breaking tests. Knitting patterns used in the tests. FIG. 11 is a diagram showing the results of a feel-in-use test. FIG. 12 is a diagram showing the results of abrasion test 1. FIG. 13 is a diagram showing the results of abrasion test 2. FIG. 14 is a diagram showing the results of abrasion test 3.

[0022] Hereinafter, embodiments of the present disclosure will be described in detail with reference to the accompanying drawings. The following description of the preferred embodiments is merely exemplary in nature and is not intended to limit the present disclosure, its applications, or its uses.

[0023] 1 is a diagram showing the rope knitting needle of the present disclosure in use. The rope knitting needle 1 of the present disclosure is used when knitting patterns such as rope knitting (cable knitting). The rope knitting needle 1 is a short knitting needle used to temporarily hold stitches that have been removed from knitting needles X and Y.

[0024] Fig. 2 is a perspective view of the rope knitting needle of the present disclosure, Fig. 3 is a front view of the rope knitting needle of the present disclosure, and Fig. 4 is a view of the rope knitting needle of the present disclosure viewed from a 45° angle. As shown in Figs. 2 to 4, the rope knitting needle 1 of the present disclosure is a substantially straight rope knitting needle. The rope knitting needle 1 comprises a long and slender middle portion 4, a first needle portion 2 located on one side of the middle portion 4 in the longitudinal direction, and a second needle portion 3 located on the other side of the middle portion 4 in the longitudinal direction. The first needle portion 2, middle portion 4, and second needle portion 3 have central axes located on the same axis. The first needle portion 2, middle portion 4, and second needle portion 3 are integrally formed.

[0025] The intermediate portion 4 is cylindrical. The rest stitches can rest in the intermediate portion 4.

[0026] The first needle part 2 has an inclined part 21 whose outer shape expands from the middle part 4 toward the end, a tip part 22 which tapers further toward the end, and a flat surface 23 .

[0027] Figure 5 is a cross-sectional view taken along line A-A in Figure 3. As shown in Figure 5, the first needle portion 2 has four inclined portions 21 in the circumferential direction at 90° intervals when viewed in the axial direction. The inclined portions 21 extend radially outward from the outer circumferential surface of the intermediate portion 4 toward one end portion. The inclined portions 21 are substantially triangular in shape, with the intermediate portion 4 as the base and the one end portion as the apex. The first needle portion 2 has a flat surface 23 between the inclined portions 21.

[0028] The flat surfaces 23 extend continuously from the outer peripheral surface of the intermediate portion 4. The first needle portion 2 has four flat surfaces 23 in the circumferential direction at 90° intervals between the inclined portions 21. The first needle portion 2 has a quadrangular prism shape formed by the four flat surfaces 23 between the inclined portions 21 and the tip portion 22. The corners of this quadrangular prism shape are rounded. The inclined portions 21 extend toward the corners of this quadrangular prism shape.

[0029] The first needle part 2 has a tip part 22 that starts in the shape of a square prism having four flat surfaces 23 and gradually changes to a conical shape towards the end. The apex of the tip part 22 is rounded.

[0030] The second needle portion 3 has a configuration that is approximately symmetrical to the first needle portion 2 across the middle portion 4. As shown in Figure 5, the second needle portion 3 has a sloped portion 31 where the outer shape of the rope knitting needle 1, i.e., the length of the diameter r of the middle portion 4, increases from the middle portion 4 to the end portion, a tip portion 32 that tapers further toward the end portion, and a flat surface 33.

[0031] The tip 32 of the second needle 3 has a conical shape that tapers more gradually than the tip 22 of the first needle 2. The angle of inclination of the tip 32 of the second needle 3 relative to the axis is greater than the angle of inclination of the tip 22 of the first needle 2 relative to the axis. The tip 32 of the second needle 3 is thicker than the tip 22 of the first needle 2. By using the thick tip 32 to pick up a rest stitch and knitting and removing it with the thin tip 22, it becomes easier to handle the rest stitches on the rope knitting needle and improves workability.

[0032] The flat surface 33 of the second needle portion 3 is connected to the flat surface 23 of the first needle portion 2 on the same plane via the outer circumferential surface of the intermediate portion 4. The flat surface extends continuously over the flat surface 23 of the first needle portion 2, the outer circumferential surface of the intermediate portion 4, and the flat surface 33 of the second needle portion 3. The flat surfaces 23, 33 are continuous from the first needle portion 2 to the second needle portion 3, and being flush with each other allows for smooth movement of rest stitches and improves workability. In addition, the flat surfaces 23, 33 make it difficult for the rope knitting needle 1 to roll.

[0033] The second needle part 3 has a colored part where dye has permeated from the surface to the inside. This colored part is provided so that one side and the other side in the longitudinal direction of the rope knitting needle 1 can be distinguished. In this embodiment, the entire second needle part 3 is colored, so that the orientation of the rope knitting needle can be easily distinguished. The colored part does not have to be the entire second needle part, and the position, area, pattern, etc. of the colored part are arbitrary as long as it is possible to distinguish one side and the other side in the longitudinal direction of the rope knitting needle.

[0034] The colored portion is preferably provided on at least one of the first needle portion 2, the second needle portion 3, and the middle portion 4 so that one side and the other side in the longitudinal direction of the rope knitting needle 1 can be distinguished from each other. More preferably, the colored portion is provided on the first needle portion 2 or the second needle portion 3.

[0035] The rope knitting needle 1 has a flat boundary between the colored and non-colored portions. The colored portion may be applied by, for example, sublimation printing or penetration printing. Sublimation printing or penetration printing allows the dye to penetrate from the surface of the rope knitting needle 1 to the interior by heating, making it possible to flatten the boundary between the colored and non-colored portions. This prevents the yarn from getting caught in the colored portion. Furthermore, even if the surface of the rope knitting needle 1 wears, the colored portion is less likely to disappear. From the viewpoint of wear resistance, the thickness of the colored portion where the dye penetrates from the surface to the interior is preferably 30 to 70 μm, and more preferably 50 μm to 70 μm.

[0036] The material of the rope knitting needle 1 is preferably a resin that has heat resistance capable of withstanding the heat applied during sublimation printing and has mechanical strength. The material of the rope knitting needle 1 is preferably a polyester resin, such as polyethylene terephthalate (PET), polybutylene terephthalate (PBT), or polyethylene naphthalate (PEN). Furthermore, mixing inorganic fibers into such polyester resins makes it easier to ensure sufficient strength. Examples of inorganic fibers include glass fibers, carbon fibers, and metal fibers.

[0037] It is preferable to manufacture rope knitting needles 1 of multiple thicknesses so that different thicknesses can be used depending on the thickness of the yarn used. The rope knitting needles 1 vary in size depending on the length of the diameter r. For example, an extra-fine rope knitting needle with an r of 2.00 mm to 3.00 mm corresponds to sizes 0 to 3 in Japan, a medium-fine rope knitting needle with an r of 3.25 mm to 3.90 mm corresponds to sizes 4 to 6 in Japan, and a medium-thick rope knitting needle with an r of 4.00 mm to 5.10 mm corresponds to sizes 7 to 10 in Japan. The rope knitting needles of the present application, even particularly thin rope knitting needles of 3.0 mm or less, contain polyester resin and inorganic fibers, and therefore have sufficient strength and heat resistance, allowing for sublimation printing or penetration printing, are resistant to breakage, and have excellent abrasion resistance in the colored portions.

[0038] According to the rope knitting needle 1 configured as above, the problem that the rest stitches are difficult to drop, which is specific to a straight rope knitting needle, is solved by providing the inclined parts 21, 31 extending radially outward on both sides of the intermediate part 4 that holds the rest stitches.

[0039] The problem of the rope knitting needle being easily misoriented was solved by providing a colored section with a flat boundary between it and the non-colored section. This colored section also solves the problem specific to rope knitting needles, where fine fibers get caught on uneven surfaces or steps.

[0040] By tapering the second needle part more gradually than the first needle part, the thicknesses of the tip parts of the first needle part and the second needle part can be made different and can be used selectively, realizing ease of handling of rest stitches.

[0041] The continuous flat surface extending from the first needle section to the second needle section makes it easier to move the rest stitches. In this way, the rope knitting needle of the present disclosure is able to both prevent the rest stitches from falling off and make it easier to move the rest stitches.

[0042] Next, a method of rope knitting using the rope knitting needle 1 will be described with reference to FIGS.

[0043] As shown in Figures 6 and 7, knitting is carried out in the direction from stitch a to h using two knitting needles X and Y. When approaching a stitch that is to form a rope pattern, the rest stitches c and d are moved from knitting needle X to rope knitting needle 1. At this time, the rest stitches c and d are moved from the second needle portion 3 side to the rope knitting needle 1. The rest stitches c and d are moved from the second needle portion 3 to the middle portion 4 and held in the middle portion 4.

[0044] As shown in Figures 8 and 9, the rest stitches c and d are skipped and the next stitches e and f are knitted, and then the rest stitches c and d that were resting on the rope knitting needle 1 are knitted from the first needle part 2 side. By switching the order of the stitches to stitches e, f, c, d, a cross-like pattern can be formed.

[0045] (Bending and Breaking Test) Next, bending and breaking tests were conducted on the rope knitting needles of the present embodiment and the comparative example according to the following procedure. Using each of the rope knitting needles of Comparative Examples 1 to 21 and Examples 1 to 7, rope knitting was performed according to a predetermined knitting pattern. Then, while knitting the rope, an evaluation was performed to see if the rope knitting needles broke or curved. Each of the rope knitting needles of Comparative Examples 1 to 21 and Examples 1 to 7 is an extremely thin rope knitting needle with an outer diameter r = 2.59 mm and has the same shape, but there are differences in the material and the method of forming the colored portion.

[0046] The material of each knitting needle, the method of forming the colored portion, and the results of bending and breaking tests are shown in Figure 10. In Figure 10, Resin A is polyoxymethylene copolymer, Resin B is polycarbonate resin, Resin C is ABS resin, Resin D is polyamide resin (nylon), Resin E is a mixture of Resin B and Resin C, Resin F is polyamide resin (nylon 66), Resin G is polyoxymethylene homopolymer, and Resin H is polyester resin.

[0047] Comparative Examples 1 to 21 were formed by secondary molding. Specifically, the colored portion was formed by insert molding on the surface of a primary molded product in which the portion to be colored was formed thinner than the finished outer shape. For example, Comparative Examples 1, 4, 6, 9, 14, and 17, as well as Comparative Examples 3, 5, 7, 13, 16, and 19, were made of the same material, but the thickness of the primary molded product and the amount of resin formed by insert molding were varied. In all of Examples 1 to 7, the colored portion was formed by penetrating dye from the surface to the interior of the rope knitting needles using penetrant printing. The knitting diagram used in the test is shown in Figure 11. In Figure 11, the solid and dashed shaded areas indicate the rope knitting area. The test time varied depending on the knitting speed of each monitor, but was between 10 and 30 minutes.

[0048] As shown in Fig. 10, in Comparative Examples 1 to 20, the knitting needles broke while the rope was being knitted, and therefore, F (Fail) was recorded in the "whether or not they broke" section in Fig. 10. In Comparative Example 21 and Examples 1 to 7, which contained polyester resin and inorganic fiber, the knitting needles did not break while the rope was being knitted, and therefore, P (Pass) was recorded in the "whether or not they broke" section in Fig. 10. Furthermore, in Comparative Examples 1 to 21 and Examples 1 to 7, none of the knitting needles bent while the rope was being knitted, and therefore, P (Pass) was recorded in the "whether or not they bent" section in Fig. 10.

[0049] (Usability Test) Next, the rope knitting needles of the present embodiment and the comparative example were tested for usability using the following procedure. Nine to fourteen monitors performed rope knitting tests using the rope knitting needles of Examples 8 to 10 and Comparative Example 22 according to the knitting diagram in FIG. 11 . After the test, participants were asked about their usability, including whether they noticed any snagging of fibers at the boundary between the colored and uncolored portions while knitting the rope. The yarn used in the test was Tosh Merino Light manufactured by MADELINETOSH. The specific configurations and test results of Examples 8 to 10 and Comparative Example 22 are shown in FIG. 12 . The rope knitting needles of Examples 8 to 10 and Comparative Example 22 contain the same polyester resin and inorganic fiber as the above examples, and are all ultra-fine rope knitting needles with the same shape and outer diameter r = 2.59 mm, but differ in the method of forming the colored portion. In Comparative Example 22, a band-shaped colored portion was formed on the flat surface of one needle portion by secondary molding. Specifically, a colored resin was injected onto the surface of a primary molded product in which the portion to become the colored portion was formed thinner than the finished outer shape, and the colored portion was formed by insert molding. In Examples 8 to 10, the colored portion was formed by penetrating dye from the surface to the interior of the rope knitting needle using penetrating printing. Examples 8 to 10 differ in the shape and area of ​​the colored portion. In Example 8, a colored portion was formed over a wide area spanning the first needle portion, the middle portion, and the second needle portion. In Example 9, a spotted colored portion was formed on the flat surface of one of the needle portions. In Example 10, a band-shaped colored portion was formed on the flat surfaces of the first needle portion and the second needle portion.

[0050] As shown in Figure 12, in Comparative Example 22, in which the colored portion was formed by secondary molding, one of the nine test subjects responded that they were bothered by fibers getting caught at the boundary between the colored and uncolored portions. Three out of three test subjects in Example 8, and 14 out of 14 test subjects in Examples 9 and 10, responded that they were not bothered by fibers getting caught at the boundary between the colored and uncolored portions. In secondary molding, a step occurs when the colored and uncolored portions are bonded. Even if the step is slight, there is a risk of fibers getting caught. In contrast, with penetrating printing, the boundary between the colored and uncolored portions is flat, so fibers can be prevented from getting caught.

[0051] (Wear Test 1) Next, a wear test was conducted using an abrasion tester on the knitting needles of Comparative Examples 23 and 24 and Example 11, which were colored using different methods. The wear test was conducted on the colored portion under the following conditions, and photographs of the colored portion were taken every 1,000 wear cycles for comparison. In Comparative Example 23, the colored portion was formed on a resin knitting needle using a transfer film. In Comparative Example 24, the colored portion was formed on a bamboo knitting needle by stamping. Example 11 is a rope knitting needle of the present embodiment, which contains polyester resin and inorganic fibers and has a colored portion formed by penetrating printing. Note that in the rope knitting needle of the present embodiment, the depth of penetration of the dye from the surface to the interior of the colored portion was 50 to 70 μm, including the portion from the surface to the interior where the color was lighter, and approximately 30 μm from the surface to the clearly colored portion. Test conditions: Testing machine: Friction and wear tester (Type: 40, manufactured by Shinto Scientific Co., Ltd.); Wear test material: Linen knit fabric (Linen 8 / 3, manufactured by Tosco Co., Ltd.); Wear cycle: 1 round trip, 1 cycle; Wear stroke: 15 mm; Travel speed: 4,000 mm / min; Vertical load: 1 kg. The results of Wear Test 1 are shown in Figure 13. In Comparative Example 23, the colored portion disappeared within 1,000 wear cycles. In Comparative Example 24, the dye in the engraved portion bled after 1,000 wear cycles, contaminating areas other than the engraved portion. Furthermore, in Comparative Example 24, the engraved characters became thinner when comparing 0 and 4,000 wear cycles. In Example 11, there was almost no change in the colored portion even after 17,000 wear cycles, demonstrating very high wear resistance.

[0052] (Wear Test 2) In Wear Test 2, wear tests were conducted under different conditions for each of the rope knitting needles of Examples 12 to 14. The rope knitting needles of Examples 12 to 14 were rope knitting needles of the present embodiment, and were similar to those of Example 11. In Example 12, artificial sweat was applied to the colored portion according to Method D of JIS L 0848, and the wear test was conducted under the same conditions as Wear Test 1 above. In Example 13, Ectree Yarn's Patora DX (product number: Y40098-502) was used as the wear test material, and the wear test was conducted under the same conditions as Wear Test 1 above. In Example 14, polyester wool yarn (Naito Shoji Co., Ltd., product name: Hi-Bubble) was used as the wear test material, and the wear test was conducted under the same conditions as Wear Test 1 above. The results of Wear Test 2 are shown in Figure 14. The rope knitting needles of Examples 12 to 14 showed no change in the colored portion even after being worn over 5,000 times, demonstrating extremely high wear resistance.

[0053] (Wear Test 3) Next, a wear test was conducted under more severe conditions on the rope knitting needle of Example 15. The rope knitting needle of Example 15 was a rope knitting needle of the present embodiment, and was the same as that of Example 11. In Wear Test 3, a sand eraser (manufactured by Pentel Co., Ltd., product name Click Eraser Hyper Razor) was rubbed against the rope knitting needle of Example 15, and photographs of the colored portion were taken every 100 reciprocations for comparison. The results of Wear Test 3 are shown in Figure 15. For the rope knitting needle of Example 15, some of the colored portion became slightly lighter after 500 reciprocations, but even after 1,000 reciprocations, most of the colored portion remained, demonstrating very high wear resistance.

[0054] In this embodiment, the rope knitting needle 1 is used to knit a rope knit, but it is not limited to rope knitting and can be applied to various knitting methods that require temporary retention of stitches removed from the knitting needles X and Y. Furthermore, rope knitting needles 1 of various thicknesses and lengths can be used depending on the thickness of the yarn used.

[0055] REFERENCE SIGNS LIST 1 Rope knitting needle 2 First needle portion 3 Second needle portion 4 Middle portion 21, 31 Inclined portion 22, 32 Tip portion 23, 33 Flat surface

Claims

1. A rope knitting needle having a substantially straight shape, comprising: a long and thin middle section; a first needle section located on one side of the middle section in the longitudinal direction, and having a sloping section whose outer shape expands from the middle section to the end section and a tip section which tapers further toward the end section; and a second needle section located on the other side of the middle section in the longitudinal direction, and having a sloping section whose outer shape expands from the middle section to the end section and a tip section which tapers more gently than the first needle section toward the end section, wherein at least one of the first needle section, the second needle section, or the middle section has a colored section where dye has permeated from the surface to the inside, the colored section being arranged so that one and the other longitudinal sides of the rope knitting needle can be distinguished, and the boundary between the colored section and the non-colored section is flat.

2. The rope knitting needle according to claim 1, wherein the first needle portion and the second needle portion have a flush flat surface that extends continuously through the intermediate portion.

3. The rope knitting needle according to claim 2, characterized in that the colored portion is provided on the first needle portion or the second needle portion.

4. The knitting needle according to claim 1, characterized in that it contains polyester resin and inorganic fibers.

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