Knitting method and fabric with imitation denim hole effect

Abstract

The invention discloses a knitting method and a fabric for imitating the effect of jeans with holes, belongs to the field of textiles, is suitable for a seamless underwear machine, and uses a weft knitting method to make a ground structure, the ground structure comprises a face yarn and a bottom yarn, at a location where holes need to be made, at least one group of false coarse wefts in the weft direction are knitted, the ground structure and the last row of the last group of false coarse wefts knitted at the same hole are unlooped, the lower edge of each group of false coarse wefts is prevented from falling apart by a structure of spacer knitting, and the upper edge is prevented from falling apart by the restraining force of elastic yarn, the false coarse wefts are naturally curled at the location where they are knitted to form false coarse wefts in appearance, the curling causes shrinkage in the length direction, and the effect of having coarse wefts in the hole is produced, and a plurality of false coarse wefts are arranged in parallel to imitate the appearance of a brushed hole.

Description

Technical Field

[0001] The invention relates to a knitting method and fabric with imitation denim hole effect, belonging to the field of textiles. Background Art

[0002] In recent years, imitation woven knitted fabrics have become increasingly popular, and the frequency of imitation woven knitted fabrics appearing at domestic and foreign exhibitions and shows has also increased. Denim is a very classic category of woven fabrics, and imitation denim knitted fabrics also have a large consumer market.

[0003] Currently, most of the imitation denim knitted fabrics only imitate the color of denim, because many characteristics of denim clothing are difficult to imitate by knitting, one of which is the hole design of denim clothing, more specifically the holes of residual weft yarns (commonly known as brushed holes in some areas).

[0004] In woven fabrics, the warp and weft yarns overlap, and the warp yarns that are about to form holes break, forming holes in the remaining weft yarns. Knitted fabrics are made of coils that are intertwined with each other. When a coil breaks, the surrounding coils will also lose their constraints and fall apart. Therefore, it is impossible to make holes in ordinary imitation denim knitted fabrics by washing them after they are made into finished garments. Holes can only be reserved during weaving.

[0005] For ordinary holes (for woven fabrics, the warp and weft yarns are broken at the holes), knitted fabrics can form holes by simple partial cast-off, and the upper and lower edges of the holes will appear curled.

[0006] As for the holes of residual weft yarn, in theory, knitted fabrics can imitate the weft yarn leaking out of torn jeans by pulling long floating lines. However, since knitted fabrics are made of coils, and woven fabrics are made of warp and weft yarns, when weaving fabrics of the same thickness, the yarn used for knitting is thinner than that used for woven fabrics, and the weft yarns used to imitate the holes of jeans formed by pulling long floating lines are easy to break. In addition, precisely because knitted yarns are thinner than those used for woven fabrics of the same thickness, even if the residual weft yarns are imitated by pulling long floating lines, the coarse weft yarn effect of the holes in woven fabrics cannot be produced. Summary of the invention

[0007] In order to overcome the shortcomings of the prior art, the present invention provides a knitting method and fabric with imitation denim hole effect, which can produce a hole effect of residual coarse weft yarn on the knitted fabric.

[0008] The technical solution adopted by the present invention to solve its technical problem is:

[0009] In the first aspect, the present application provides a knitting method for imitating a denim hole effect, which is suitable for a seamless underwear machine, and a ground fabric is made by weft knitting, wherein the ground fabric includes a face yarn and a bottom yarn, and at least one group of false coarse weft knitting in the weft direction is made at a location where a hole is required, and the ground fabric is knitted with the last row of the last group of false coarse weft knitting at the same hole, and the operation of knitting each group of false coarse weft from bottom to top includes:

[0010] At least one row of loops is cast off: the needle rises to the height of the loop withdrawal, the yarn is not inserted, and the old loop is removed;

[0011] At least two rows of first anti-loosening weaving: cutting the face yarn and weaving the base yarn with alternate needles;

[0012] At least one row of short-distance knitting: cutting the face yarn, and knitting the base yarn with alternate needles or full needles;

[0013] At least one row of stretch knitting: knitted with stretch yarn.

[0014] The knitting method for imitating denim ripped effect provided in the present application can produce knitted denim fabric with imitation brushed ripped effect, which utilizes the characteristic that single-layer weft knitted fabric is easy to curl. After the fabric is woven, the fake coarse weft woven part automatically curls up, which can imitate the effect of coarse weft yarn.

[0015] Furthermore, the elastic knitting is knitted with full needles by the elastic yarn. The elastic yarn can make the upper edge of the false coarse weft knitting have the ability to prevent unraveling, and after knitting with full needles, the ability to prevent unraveling is further enhanced.

[0016] In some embodiments, the elastic yarn is the base yarn, and the elastic weaving is: cutting the face yarn and weaving with the base yarn. When the base yarn has elasticity, the face yarn is completely cut at the hole regardless of whether the face yarn has elasticity.

[0017] In some embodiments, the base yarn is inelastic, the elastic yarn is the face yarn, and the elastic weaving is: weaving the face yarn and the base yarn. When only the face yarn has elasticity, the face yarn needs to be retained at the upper edge of the false coarse weft weaving, and the elasticity of the face yarn makes the upper edge of the false coarse weft weaving have the ability to prevent unraveling.

[0018] In some embodiments, both the base yarn and the face yarn are inelastic, the elastic yarn is a plating yarn, and the elastic weaving is: cutting the face yarn and weaving the plating yarn and the base yarn. When both the base yarn and the face yarn are inelastic, it is best to introduce an elastic yarn as the plating yarn so that the upper edge of the false thick weft weaving has the ability to prevent unraveling.

[0019] Furthermore, at the edge of the hole, a second anti-loosening weave is made on the ground tissue that is woven by the first group of false thick wefts and has a first row of unstuck loops, and the second anti-loosening weave includes at least one row and is woven by the added yarn and the base yarn. When both the base yarn and the face yarn are inelastic, the ground tissue that is woven by the first group of false thick wefts and has a first row of unstuck loops also needs to be anti-loosening, that is, at least one row of yarn containing elastic fibers is woven on the lower edge of the hole to prevent the lower edge of the hole from unraveling, and the seamless underwear machine must contain the base yarn during weaving, so the second anti-loosening weave is used for the base yarn and the added yarn.

[0020] Furthermore, at least two rows of spacer knitting are made at the starting knitting of the ground structure. Spacer knitting also has the function of preventing unraveling. The first row to the second row of the false coarse weft knitting is precisely to use spacer knitting to make the lower edge of the false coarse weft knitting have the ability to prevent unraveling. The starting knitting refers to the first few rows of the fabric when it is first woven.

[0021] Furthermore, the ground fabric is knitted with at least two rows of spacer stitches at the upper edge of the hole.

[0022] Furthermore, the spacer stitch knitting is performed with one stitch every other stitch, which can achieve the best anti-loosening effect.

[0023] In a second aspect, the present application provides a knitted fabric with a denim-like hole effect, comprising a ground fabric and holes distributed in the ground fabric, wherein the ground fabric comprises a weft-knitted face yarn and a bottom yarn, the upper edge of the hole is the ground fabric with a loop removed, and the hole has at least one false coarse weft in the weft direction, and the false coarse weft comprises:

[0024] The lower edge of the cloth piece does not contain the face veil, and the bottom veil has a structure of interlaced knitting;

[0025] The upper edge of the cloth piece contains elastic yarn, and the elastic yarn is a face yarn, a base yarn or a plaited yarn.

[0026] In the holes of the knitted fabric with imitation denim ripped effect provided by the present application, the fake coarse weft is actually a section of weft knitted fabric, which looks very similar to the coarse weft yarn of woven denim after natural curling. The lower edge is prevented from unraveling by the structure of spacer weaving, and the upper edge is prevented from unraveling by the restraining force of the elastic yarn, so that the fabric can maintain the effect of imitation brushed ripped holes for a long time.

[0027] The beneficial effects of the present invention are as follows: the knitting method for imitating the denim ripped hole effect of the present invention utilizes the characteristic that a single-layer weft knitted fabric is easy to curl, and a single-sided knitted structure with a larger width and a smaller length is produced. After the natural curling, a false thick weft is formed in appearance, and the curling causes shrinkage in the length direction to produce the effect of a thick weft in the hole. When a plurality of false thick wefts are arranged in parallel, the appearance of a brushed hole can be imitated. The lower edge of the false thick weft is prevented from falling apart by the structure of the spacer knitting, and the upper edge is prevented from falling apart by the restraining force of the elastic yarn, so that the fabric can maintain the effect of imitating the brushed ripped hole for a long time.

[0028] Other features and advantages of the present application will be described in the following description, and partly become apparent from the description, or understood by practicing the present application. The purpose and other advantages of the present application can be realized and obtained by the structures particularly pointed out in the written description and the drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 It is a woven denim brass hole pattern.

[0030] Figure 2 It is a schematic diagram of the principle that weft knitted fabrics are easy to fall apart.

[0031] Figure 3 This is the principle diagram of anti-unraveling knitting with alternate needles.

[0032] Figure 4 This is a schematic diagram of the principle of preventing elastic yarn from falling apart.

[0033] Figure 5 This is a rendering of a knitted fabric with imitation denim ripped effect provided in an embodiment of the present application.

[0034] Figure 6 This is one of the principle diagrams of a knitting method for imitating the denim hole effect provided in an embodiment of the present application.

[0035] Figure 7 This is the second principle diagram of a knitting method for imitating the denim hole effect provided in an embodiment of the present application.

[0036] Figure 8 This is the third principle diagram of a knitting method for imitating the denim hole effect provided in an embodiment of the present application.

[0037] Fig. 9 This is the fourth principle diagram of a knitting method for imitating the denim hole effect provided in an embodiment of the present application. DETAILED DESCRIPTION

[0038] The embodiments of the present invention are described in detail below, examples of which are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and cannot be understood as limiting the present invention.

[0039] Seamless underwear machine knitting is woven from bottom to top, and the "upper" and "lower" in this application are referenced according to the knitting direction.

[0040] The disclosure below provides many different embodiments or examples to implement different structures of the present invention. In order to simplify the disclosure of the present invention, the parts and settings of specific examples are described below. Of course, they are only examples, and the purpose is not to limit the present invention. In addition, the present invention can repeat reference numbers and / or reference letters in different examples, and this repetition is for the purpose of simplification and clarity, which itself does not indicate the relationship between the various embodiments and / or settings discussed.

[0041] Woven denim is made of sizing-dyed warp yarns and white weft yarns. Figure 1 As shown, the woven denim is treated with holes to break the warp yarn, which will form holes and leave white weft yarns, commonly known as drawing. In view of the fact that knitted denim in the prior art cannot imitate such holes, the present invention provides a knitting method for imitating the effect of denim holes, which is suitable for seamless underwear machines, more specifically, for seamless underwear machines with electronic needle selection functions, and yarn mouths (yarn guides) that can selectively enter or exit the working state, and are not suitable for ordinary large circular knitting machines. This method uses weft knitting to make a ground structure, which includes a face yarn and a bottom yarn. At the place where the hole needs to be made, at least one group of false coarse weft weaving in the weft direction is made, and the ground structure and the last row of the last group of false coarse weft weaving at the same hole are unlooped. The operation of each group of false coarse weft weaving includes the following from bottom to top:

[0042] At least one row of loops is cast off: the needle rises to the height of the loop withdrawal, the yarn is not inserted, and the old loop is removed;

[0043] At least two rows of first anti-loosening knitting: cut the veil and knit the bottom yarn with alternate needles;

[0044] At least one row of short knitting: cut the veil, knit the bottom yarn every other needle or knit it full needle;

[0045] At least one row of stretch knitting: knitted with stretch yarn.

[0046] When short-distance knitting chooses spacer knitting, its shape is the same as the first anti-unraveling knitting, but its purpose is not to prevent unraveling, but to reduce the upper and lower lengths of the "false coarse weft fabric" to make its aspect ratio more suitable for the yarn in the holes of woven denim.

[0047] Specifically, the veil is blue (or black), the base yarn is white, and the veil is thicker than the base yarn. The ground weave formed by the veil and the base yarn will have a blue-white appearance similar to woven denim. If only the veil is not looped and the floating long line is pulled, the line imitating the coarse weft will appear blue, which is obviously different from the white weft yarn at the hole of woven denim, and the floating long line is easy to break when worn; if only the base yarn is not looped and the floating long line is pulled, the base yarn is too thin and cannot imitate the coarse weft effect of woven fabrics. The floating long line is very easy to break when worn. The present invention utilizes the characteristic that single-layer weft knitted fabrics are easy to curl, and makes a false coarse weft weaving structure with a larger width and a smaller length to imitate coarse weft. For example, the width: length of the cloth piece woven by the false coarse weft is greater than 10:1. Although it is woven into a small piece of cloth, it looks like a line after curling. The thickness of this line is positively correlated with the total number of rows of false coarse weft weaving. By adjusting the total number of rows of false coarse weft weaving, the desired thickness of the false coarse weft can be imitated.

[0048] The principle of anti-loosening by interlaced knitting is as follows: Figure 2 As shown in the figure, in general plain knitting, the sinking arc of the first row of loops is not constrained and can freely escape from the loop posts of the two loops in the next row, causing the entire row of loops to fall off, and eventually causing the entire piece of fabric to fall apart. Figure 3 As shown, the first two rows (the effect on the fabric is that the two rows merge into one row, Figure 3 The bottom row is knitted in two rows on a seamless underwear machine, with the depth of the lines distinguished by one stitch each, and the first two rows are tied together and are not easy to fall apart.

[0049] The knitting direction of seamless underwear machine is from bottom to top. The anti-unraveling method of interlaced knitting can only be used for false coarse weft knitting and the lower edge of the re-knitted ground tissue. However, the hole requires separation from the ground tissue above and below, and there is a need to prevent unraveling, so elastic knitting is needed. The principle of elastic knitting to prevent unraveling is as follows Figure 4 As shown, the thin line represents the elastic yarn. The elastic yarn has a certain shrinkage. After being unhooked, the row of unhooked will be bound by the loops formed by the elastic yarn in the previous row, and it is not easy to be unhooked, thereby preventing the fabric from unraveling.

[0050] The knitted fabric with imitation denim holes effect thus prepared is as follows Figure 5 As shown, it includes a ground fabric and holes distributed in the ground fabric, the ground fabric includes a weft-knitted face yarn and a bottom yarn, the upper edge of the hole is a loop-off ground fabric, and there is at least one false coarse weft in the weft direction in the hole, and the false coarse weft is flatly spread out ( Figure 5 In the case of a curled and unexpanded state, it includes:

[0051] The lower edge of the cloth, without the veil, has a structure of interlaced knitting;

[0052] The upper edge of the cloth contains stretch yarn, which is the veil, base yarn or added yarn.

[0053] The lower edge and the upper edge of the cloth are not easy to fall apart, and can maintain curling for a long time, forming an appearance similar to coarse weft.

[0054] Embodiment 1

[0055] The bottom yarn is elastic, the top yarn is not elastic, and no plating yarn is used. Figure 6 ( Figures 6 to 9 The loop ratio shown in the figure is only for the convenience of aligning the number of rows for knitting, not the real ratio). As shown in the figure, the second row and the following rows (the first row is not the starting knitting position, and the following rows are omitted ground structures) are ground structures, containing parallel ground yarn and veil; the third row is knitted at the position where the hole is needed, and the needle holds the old loop at the position where the hole is not needed, without needle or pad. After the loop is knitted, the first anti-loosening knitting is made upwards, specifically, the veil is cut off, and the ground yarn is knitted with alternate needles to ensure that the lower edge of the cloth block does not loosen; then two rows of short-distance knitting are made upwards (the sixth and seventh rows); and then elastic knitting is made upwards, that is, only the ground yarn is knitted. The eleventh row begins to return to the ground structure, and in order to avoid loosening, it is knitted with alternate needles. Holes are formed from the third to the tenth rows, and cloth blocks are formed from the fourth to the ninth rows. The cloth blocks naturally curl up to become false coarse wefts. Figure 6 It is only used to assist in explaining the principle, not Figure 5 The real design of the product has a small width-to-length ratio and the hole contains only one set of false coarse weft weaves. An example of a hole containing three sets of false coarse weft weaves is Figure 7 As shown, the 4th to 9th rows, the 11th to 16th rows, and the 21st to 27th rows are each curled to form a false thick weft.

[0056] Embodiment 2

[0057] The bottom yarn is not elastic, the top yarn is elastic, and no plating is used. Figure 8As shown, the second row and the following rows (the first row is not the starting knitting position, and the row below the first row is the omitted ground structure) are the ground structure, which contains the parallel bottom yarn and the veil; the third row is knitted at the position where the hole is needed, and the needle holds the old loop at the position where the hole is not needed, and does not move the needle or pad the yarn. After the loop is unstuck, the first anti-loosening knitting is made upwards, specifically, the veil is cut off, and the bottom yarn is knitted with alternate needles to ensure that the lower edge of the cloth block does not loosen; then two rows of short-distance knitting are made upwards (the sixth and seventh rows); and elastic knitting is made upwards. The elastic one is the veil, but the seamless underwear machine either does not knit or must knit the bottom yarn, so the eighth and ninth rows are the same as the ground structure, containing both the bottom yarn and the veil. The eleventh row begins to return to the ground structure, and in order to avoid loosening, it is knitted with alternate needles. The holes are formed from the third to the tenth rows, and the cloth blocks are formed from the fourth to the ninth rows. The cloth blocks naturally curl up to become false coarse wefts. Most of the weft yarns of real woven denim are inelastic. In Example 1, each row of the cloth formed by false coarse weft weaving is elastic, and the appearance imitates the effect of brushed holes, but the feel is not like the coarse weft of woven denim holes. In Example 2, only two rows of the cloth formed by false coarse weft weaving are elastic, and the feel is better.

[0058] Embodiment 3

[0059] Neither the base yarn nor the top yarn has elasticity, so it is necessary to introduce additional yarn. Fig. 9 As shown, the 2nd row and the following rows (the 1st row is not the starting knitting place, and the 1st row and the following rows are omitted ground tissue) are ground tissue, which contains parallel ground yarn and face yarn. After the loop is unhooked, the first anti-loosening knitting is made upwards, specifically, the face yarn is cut off, and the ground yarn is knitted with alternate needles to ensure that the lower edge of the cloth block does not loosen; then two rows of short-range knitting are made upwards (the 7th and 8th rows); then elastic knitting is made upwards, and the added yarn is introduced. Seamless underwear machine knitting must have a ground yarn, so the 9th and 10th rows are knitted with parallel ground yarn and added yarn, and the added yarn only exists in the part where the hole is formed and is not introduced into the ground tissue. The 12th row starts to return to the ground tissue, and in order to avoid loosening, it is knitted with alternate needles. The holes are formed from the 5th to the 13th rows, and the cloth blocks are formed from the 5th to the 10th rows. The cloth blocks naturally curl up to become false coarse wefts. In Examples 1 and 2, one of the face veil and the bottom veil is elastic, so the lower edge of the hole (ground fabric) is constrained by the elastic force and is not easy to fall apart. However, when neither the bottom veil nor the face veil is elastic, the lower edge of the hole is easy to fall apart. To address this situation, added yarn is introduced into the second and third rows, and the elastic force of the added yarn is used to constrain the lower edge of the hole from falling apart.

[0060] In the description of this specification, the description with reference to the terms "one embodiment", "certain embodiments", "illustrative embodiments", "examples", "specific examples", or "some examples" means that the specific features, structures, materials, or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described may be combined in any one or more embodiments or examples in a suitable manner.

[0061] The above is a preferred embodiment of the present invention. It should be pointed out that a person skilled in the art can make several improvements and modifications without departing from the principle of the present invention. These improvements and modifications are also considered to be within the scope of protection of the present invention.

Claims

1. A knitting method for imitating the effect of denim holes, suitable for seamless underwear machines, using weft knitting to make ground fabrics, characterized in that: The ground fabric comprises a face yarn and a bottom yarn. At the starting knitting place of the ground fabric, at least two rows of spacer knitting are made. At the place where a hole is to be made, at least one group of false coarse weft knitting in the weft direction is made. The ground fabric and the last row of the last group of false coarse weft knitting at the same hole are unstuck. At the edge of the hole, a second anti-loosening knitting is made on the ground fabric that has been unstuck by the first row of the first group of false coarse weft knitting. At least two rows of spacer knitting are made on the upper edge of the hole of the ground fabric. The spacer knitting is one stitch apart. The operations of each group of false coarse weft weaving include from bottom to top: At least one row of loops is cast off: the needle rises to the height of the loop withdrawal, the yarn is not inserted, and the old loop is removed; At least two rows of first anti-loosening weaving: cutting the face yarn and weaving the base yarn with alternate needles; At least one row of short-distance knitting: cutting the face yarn, and knitting the base yarn with alternate needles or full needles; At least one row of stretch knitting: knitted with stretch yarn; The elastic knitting is full of needles by knitting the elastic yarn; The elastic yarn is a face yarn, a base yarn or a plaited yarn.

2. The knitting method for imitating denim hole effect according to claim 1, characterized in that: When the elastic yarn is the base yarn, the elastic weaving is: cutting the face yarn and weaving with the base yarn.

3. The knitting method for imitating denim hole effect according to claim 1, characterized in that: When the elastic yarn is the face yarn, the bottom yarn has no elasticity, and the elastic weaving is: weaving the face yarn and the bottom yarn.

4. The knitting method for imitating denim hole effect according to claim 1, characterized in that: When the elastic yarn is a plating yarn, both the base yarn and the face yarn are inelastic, and the elastic weaving is performed by cutting the face yarn and weaving the plating yarn and the base yarn.

5. The knitting method for imitating denim hole effect according to claim 4, characterized in that: The second anti-raveling weaving includes at least one row and is woven by the added yarn and the base yarn.

6. A knitted fabric with imitation denim hole effect, characterized in that: The knitting method for imitating denim hole effect according to any one of claims 1 to 5 comprises a ground fabric and holes distributed in the ground fabric, the ground fabric comprises a weft-knitted face yarn and a bottom yarn, the upper edge of the hole is the ground fabric with a loop being cast off, the hole has at least one false thick weft in the weft direction, and the false thick weft comprises: The lower edge of the cloth piece does not contain the face veil, and the bottom veil has a structure of interlaced knitting; The upper edge of the panel contains stretch yarn.

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