Processing method of fine denier high density knitted double jacquard fabric

Abstract

The application discloses a processing method of fine denier high-density double-sided jacquard cloth, and belongs to the technical field of fabric processing. The fine denier high-density double-sided jacquard cloth is knitted by a circular knitting machine according to any combination of the following first basic structure unit E, second basic structure unit F, third basic structure unit G and fourth basic structure unit H. The first basic structure unit E comprises two horizontal rows and two vertical rows. In the first horizontal row of the two horizontal rows, a silk thread A forms a loop at a first needle and a second needle on the front surface of the cloth and then forms a loop at a second needle on the back surface of the cloth; a silk thread B only forms a loop at a first needle on the back surface of the cloth. In the second horizontal row of the two horizontal rows, the silk thread A forms a loop at a first needle on the back surface of the cloth and then forms a loop at a second needle on the front surface of the cloth; the silk thread B forms a loop at a first needle on the front surface of the cloth and then forms a loop at a second needle on the back surface of the cloth. The fine denier high-density double-sided jacquard cloth with a pattern of required color change can be obtained, the fine denier high-density double-sided jacquard cloth has good appearance and can meet the demand of high-end outdoor sportswear fabric.

Description

Technical Field

[0001] This invention belongs to the field of fabric processing technology, specifically relating to a processing method for fine denier high-density knitted double-sided jacquard fabric. Background Technology

[0002] As is known in the industry, weft-knitted fabrics are mainly divided into two types: single-sided and double-sided. The aforementioned double-sided jacquard fabric belongs to the category of double-sided knitted fabrics, which are also commonly referred to as cotton jersey, double rib, or simply double-sided fabric. Common examples include cotton undershirts, children's clothing, T-shirts, and women's long skirts. In terms of raw materials, there are polyester double-sided fabrics, pure cotton double-sided fabrics, cotton-polyester double-sided fabrics, spandex double-sided fabrics (fabric with added spandex), and cotton-covered polyester double-sided fabrics, among others.

[0003] Among the aforementioned double-faced fabrics, lightweight, high-density double-faced fabrics with a weft density greater than 60 stitches / inch and made from polyester yarn with a denier of less than 50D are widely used in three-in-one composite fabrics for outdoor jackets. They are highly favored due to their superior softness, moisture absorption, breathability, and elasticity, which woven fabrics cannot match. However, they still have the following drawbacks: the knitted structure is rigid and the styles are monotonous (single-dimensional). Especially due to the constraints of lightweight and high density, the space for variation in the fabric structure is severely limited. Specifically, this manifests in a lack of patterns that enhance visual appeal, thus limiting their expansion in high-end outdoor apparel. Furthermore, because they largely fail to reflect technological added value, they cannot meet the expectations of manufacturers in the apparel market.

[0004] While subsequent printing and finishing processes can achieve the desired pattern on the high-density double-sided fabric, they also introduce undesirable but unavoidable problems: Since the pattern is not formed during the weft weaving stage (i.e., it is not inherent but created through subsequent artificial printing processes), it generates pollutants during printing and finishing, thus harming the environment. Furthermore, the colorfastness of the printed pattern on the double-sided fabric is relatively fragile and cannot withstand reasonable friction. Additionally, the fabric surface is shiny, the color boundaries of the pattern are blurred, and the three-dimensional effect is poor, thus failing to enhance the fabric's quality and reducing its market competitiveness.

[0005] As explained above, forming patterns on fabric during the weaving process is called an active or primary pattern forming method, while forming patterns on fabric during subsequent printing and finishing processes is called a passive or supplementary pattern forming method. Undoubtedly, the former is superior to the latter, and it is precisely what the industry is currently focusing on exploring.

[0006] Publicly available Chinese patent documents contain numerous technical information related to high-density fabrics. A typical example is CN105734804B, which recommends "a high-density knitted fabric and its production method and uses." However, this patent's technical content concerns warp knitting and does not involve technical information regarding patterns. Another example is CN104404684B, which provides a "production and processing method for fine denier polyester high warp density two-color jacquard home textile fabric." The fabric in this patent is produced by a jacquard machine, which shapes the fabric with the desired pattern during the production process. For example, CN102094285A describes "a knitted double-sided jacquard fabric." Although the patent application teaches in paragraph 0019 of its specification that "the double-sided jacquard is woven from two yarns from both sides of the fabric, wherein the second yarn on the reverse side of the fabric is woven into loops on both sides of the fabric, and the loops on the front and back sides are interwoven to form a reverse pattern, and the first yarn on the front side of the fabric is woven into loops only on the front side of the fabric, and covers the front loops of the second yarn to form a raised pattern on the front side," this patent focuses on the structure and therefore does not provide technical guidance on specific processing methods for fine denier high-density double-sided jacquard fabric. Summary of the Invention

[0007] The objective of this invention is to provide a processing method for fine denier high-density knitted double-sided jacquard fabric. This method helps to form the desired pattern on the fabric by controlling the color and structure changes of the yarns during the weft knitting process, under the premise of reasonable selection of raw materials and weft density, so as to meet the requirements of forming double-sided jacquard fabric by active means.

[0008] The objective of this invention is achieved by providing a method for processing a fine denier high-density knitted double-sided jacquard fabric, wherein the fine denier high-density knitted double-sided jacquard fabric is knitted by a circular knitting machine using any combination of the following first basic structural unit E, second basic structural unit F, third basic structural unit G, and fourth basic structural unit H:

[0009] The first basic structural unit E includes two horizontal rows and two vertical rows. In the first horizontal row, thread A is looped on the front side of the fabric after the first and second stitches, and then looped on the back side of the fabric after the second stitch. In the first horizontal row, thread B is looped only on the back side of the fabric after the first stitch. In the second horizontal row, thread A is looped on the back side of the fabric after the first stitch, and then looped on the front side of the fabric after the second stitch. In the second horizontal row, thread B is looped on the front side of the fabric after the first stitch, and then looped on the back side of the fabric after the second stitch.

[0010] The second basic structural unit F includes two horizontal rows and two vertical rows. In the first horizontal row, thread A is looped on the front side of the fabric after the first and second stitches, and then looped on the back side of the fabric after the second stitch. In the first horizontal row, thread B is looped only on the back side of the fabric after the first stitch. In the second horizontal row, thread A is looped on the front side of the fabric after the first stitch, and then looped on the back side of the fabric after the first stitch, and then looped on the front side of the fabric after the second stitch. In the second horizontal row, thread B is looped only on the back side of the fabric after the second stitch.

[0011] The third basic structural unit G includes two horizontal rows and two vertical rows. In the first horizontal row, thread A is looped on the front side of the fabric with the first stitch and then looped on the back side of the fabric with the second stitch. In the first horizontal row, thread B is looped on the back side of the fabric with the first stitch and then looped on the front side of the fabric with the second stitch. In the second horizontal row, thread A is looped on the front side of the fabric with the first stitch and then looped on the back side of the fabric with the first stitch, and then looped on the front side of the fabric with the second stitch. In the second horizontal row, thread B is only looped on the back side of the fabric with the second stitch.

[0012] The fourth basic structural unit H includes two horizontal rows and two vertical rows. In the first horizontal row, thread A is looped on the front side of the fabric with the first stitch and then looped on the back side of the fabric with the second stitch. In the first horizontal row, thread B is looped on the back side of the fabric with the first stitch and then looped on the front side of the fabric with the second stitch. In the second horizontal row, thread A is looped on the back side of the fabric with the first stitch and then looped on the front side of the fabric with the second stitch. In the second horizontal row, thread B is looped on the front side of the fabric with the first stitch and then looped on the back side of the fabric with the second stitch.

[0013] In a specific embodiment of the present invention, the circular knitting machine is a 34-inch 36-needle, 34-inch 38-needle, or 34-inch 40-needle computerized jacquard double-sided circular knitting machine.

[0014] In another specific embodiment of the present invention, the weft density of the fine denier high-density knitted double-sided jacquard fabric is 60-70 stitches / inch.

[0015] In another specific embodiment of the present invention, the properties of the thread A and the thread B are different, or the properties of the thread A and the thread B are the same but the thickness is different. When the properties of the thread A and the thread B are different, different colored floral patterns are formed on the front of the fabric after dyeing. When the properties of the thread A and the thread B are the same but the thickness is different, embossed floral patterns are formed on the front of the fabric after dyeing.

[0016] In another specific embodiment of the present invention, the thread A and the thread B are interchangeable.

[0017] In another specific embodiment of the present invention, the yarn A is 20D-50D DTY polyester yarn, and the yarn B is 20D-50D DTY cationic polyester yarn.

[0018] In a more specific embodiment of the present invention, the yarn A is 20-50D DTY cationic polyester yarn, and the yarn B is 20-50D DTY polyester yarn.

[0019] In a further specific embodiment of the present invention, the weight of the fine denier high-density knitted double-sided jacquard fabric is 60-105 g / m². 2 .

[0020] In yet another specific embodiment of the present invention, the yarn A is 30D / 24F DTY polyester yarn, and the yarn B is 30D / 36F DTY cationic polyester yarn.

[0021] The technical effect of the technical solution provided by the present invention is as follows: a fine denier high-density knitted double-sided jacquard fabric with desired pattern variations is obtained by knitting a circular knitting machine according to any combination of the first, second, third, and fourth basic structural units E, F, G, and H, and by knitting two horizontal and two vertical rows of yarn A and yarn B of each of the first, second, third, and fourth basic structural units E, F, G, and H. This double-sided jacquard fabric has ideal appearance and can meet the needs of high-end outdoor sportswear fabrics. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of the upper triangular arrangement, yarn configuration, and reverse side of the fabric in the weaving process of this invention.

[0023] Figure 2a This is a schematic diagram of the braided structure of the first basic structural unit E described in this invention.

[0024] Figure 2b This is a schematic diagram of the braided structure of the second basic structural unit F described in this invention.

[0025] Figure 2c This is a schematic diagram of the braided structure of the third basic structural unit G described in this invention.

[0026] Figure 2d This is a schematic diagram of the braided structure of the fourth basic structural unit H described in this invention.

[0027] Figure 3a for Figure 2a The front view of the fabric of the first basic structural unit E.

[0028] Figure 3b for Figure 2b The front view of the fabric of the second basic structural unit F.

[0029] Figure 3c for Figure 2c The front view of the fabric of the third basic structural unit G.

[0030] Figure 3d for Figure 2d The front view of the fabric of the fourth basic structural unit H.

[0031] Figure 1 The ABAB in the upper middle part represent thread A, thread B, thread A, and thread B, respectively. Figure 1 The middle section uses a double-field shape to represent – ​​VV – and V – – V, indicating an upper triangular arrangement. Figure 1 The BAAB symbol in the lower middle section, represented by a single square, indicates the design of the reverse side of the fabric. Figure 2a From top to bottom, the first row represents the reverse side, the first row represents the front side, the second row represents the reverse side, and the second row represents the front side. Figure 2b From top to bottom, the first row represents the reverse side, the first row represents the front side, the second row represents the reverse side, and the second row represents the front side. Figure 2c From top to bottom, the first row represents the reverse side, the first row represents the front side, the second row represents the reverse side, and the second row represents the front side. Figure 2d From top to bottom, the rows represent the reverse side of the first row, the front side of the first row, the reverse side of the second row, and the front side of the second row. Figures 3a to 3d In this context, A and B represent thread A and thread B, respectively. Detailed Implementation

[0032] Example 1: Please refer to Figure 1 , Figures 2a to 2d as well as Figures 3a to 3d A method for processing a fine denier high-density knitted double-sided jacquard fabric, wherein the aforementioned fine denier high-density knitted double-sided jacquard fabric is produced by a circular knitting machine according to... Figures 2a to 2d The following basic structural units E, F, G, and H are woven together in any combination:

[0033] The aforementioned first basic structural unit E includes two horizontal rows and two vertical rows. In the first horizontal row, yarn A forms a loop on the first and second stitches of the fabric face before forming a loop on the second stitch of the fabric reverse side. Yarn B forms a loop only on the first stitch of the fabric reverse side. In the second horizontal row, yarn A forms a loop on the first stitch of the fabric reverse side before forming a loop on the second stitch of the fabric face. Yarn B forms a loop on the first stitch of the fabric face before forming a loop on the second stitch of the fabric reverse side. During horizontal knitting, forming two loops on the front and back sides of the fabric respectively constitutes two vertical rows. Thus, since weft-knitted fabric moves horizontally, forming two loops, namely the first and second stitches, constitutes two vertical rows.

[0034] The aforementioned second basic structural unit F includes two horizontal rows and two vertical rows. In the first horizontal row, yarn A forms a loop on the first and second stitches of the fabric on the right side, and then forms a loop on the second stitch of the fabric on the wrong side. Yarn B forms a loop only on the first stitch of the fabric on the wrong side. In the second horizontal row, yarn A forms a loop on the first stitch of the fabric on the right side, then forms a loop on the first stitch of the fabric on the wrong side, and then forms a loop on the second stitch of the fabric on the right side. Yarn B forms a loop only on the second stitch of the fabric on the wrong side. When weaving horizontal rows, forming two loops on the right and wrong sides of the fabric respectively constitutes two vertical rows. Thus, since weft-knitted fabric is laid horizontally, forming two loops, namely the first and second stitches, constitutes two vertical rows.

[0035] The aforementioned third basic structural unit G includes two horizontal rows and two vertical rows. In the first horizontal row, yarn A forms a loop on the first stitch on the right side of the fabric and then forms a loop on the second stitch on the wrong side. In the first horizontal row, yarn B forms a loop on the first stitch on the wrong side of the fabric and then forms a loop on the second stitch on the right side. In the second horizontal row, yarn A forms a loop on the first stitch on the right side of the fabric and then forms a loop on the first stitch on the wrong side, and then forms a loop on the second stitch on the right side. In the second horizontal row, yarn B only forms a loop on the second stitch on the wrong side of the fabric. When weaving horizontal rows, forming two loops on the right and wrong sides of the fabric respectively constitutes two vertical rows. Thus, since weft-knitted fabric is laid horizontally, the two loops, namely the first and second stitches, form two vertical rows.

[0036] The aforementioned fourth basic structural unit H includes two horizontal rows and two vertical rows. In the first horizontal row, yarn A forms a loop on the first stitch on the right side of the fabric and then forms a loop on the second stitch on the wrong side. In the first horizontal row, yarn B forms a loop on the first stitch on the wrong side of the fabric and then forms a loop on the second stitch on the right side. In the second horizontal row, yarn A forms a loop on the first stitch on the wrong side of the fabric and then forms a loop on the second stitch on the right side. In the second horizontal row, yarn B forms a loop on the first stitch on the right side of the fabric and then forms a loop on the second stitch on the wrong side. During horizontal knitting, forming two loops on each side of the fabric constitutes two vertical rows. Therefore, since weft-knitted fabric is laid horizontally, the two loops, namely the first and second stitches, form two vertical rows.

[0037] The circular knitting machine described in this embodiment is a 34-inch 36-gauge computerized jacquard double-sided circular knitting machine; the effective gate width of the fine denier high-density knitted double-sided jacquard fabric is 160cm, and the weft density is 60 stitches / inch; in this embodiment, the aforementioned yarn A is 30D / 24F DTY polyester yarn, while yarn B is 30D / 36F DTY cationic polyester yarn. Therefore, since yarn A and yarn B have different properties—the former being the aforementioned 30D / 24F DTY polyester yarn, and the latter being both 30D / 36F and DTY cationic polyester yarn—a floral pattern composed of two different colors is formed on the front side of the fabric after dyeing; the resulting fine denier high-density knitted double-sided jacquard fabric has a weight of 70g / m². 2In this embodiment, the tension of yarns A and B is stable and uniform during the weaving process, thus meeting the production requirements of high-needle, high-density computerized jacquard double-sided circular knitting machine. This results in a tight fabric structure, uniform loop distribution, good anti-pilling properties, and excellent tear resistance. After finishing treatments such as UV protection and insect repellency, the fine-density, high-density knitted double-sided jacquard fabric, which possesses advantages not limited to those mentioned above, further improves its various properties. Subsequent deep processing and three-in-one bonding create a waterproof jacket fabric that achieves lightweight, soft, and elastic properties while further enhancing anti-pilling and tear resistance, meeting the various requirements for outdoor sportswear fabrics.

[0038] The aforementioned first basic structural unit E, second basic structural unit F, third basic structural unit G, and fourth basic structural unit H can also be referred to as the first structural module, second structural module, third structural module, and fourth structural module. The arbitrary combination refers to the arrangement according to the designed pattern. For example, the following arrangements can be used: first and second rows: EFEGHEG…; third and fourth rows: HHEGEHG…; fifth and sixth rows: EGHEFEH…, etc. In short, the corresponding basic structural units are used as needed, based on whether they represent two horizontal and two vertical lines on the fabric. The advantage of this selection is that the feed ratio of yarns A and B is stable and the tension is uniform during weaving. This allows for maintaining a consistent feed speed for yarn A and yarn B throughout the entire weaving process, thereby meeting the technological requirements for obtaining fine denier, high-density knitted double-sided jacquard fabric.

[0039] Example 2: The circular knitting machine is a 34-inch, 38-gauge computerized jacquard double-sided circular knitting machine. Yarn A is 30D / 24F DTY polyester yarn, and yarn B is 50D / 48F DTY polyester yarn. In this example, yarn A and yarn B have the same properties but different thicknesses. The weft density is 64 stitches / inch. After dyeing, a raised floral pattern is formed on the front of the fabric. The weight of the fine denier, high-density double-sided jacquard fabric is 90 g / m². 2 The rest are the same as the description of Example 1.

[0040] Example 3: The only difference is that the circular knitting machine is replaced with a 34-inch 36-gauge computerized jacquard double-sided circular knitting machine; the yarns A and B are swapped (i.e., interchanged) relative to Example 1, that is, yarn A is made of 30D / 36F DTY cationic polyester yarn, while yarn B is made of 30D / 24F DTY polyester yarn, and everything else is the same as described in Example 1.

[0041] Example 4: Only yarn A is made of 20D DTY polyester yarn and yarn B is made of 20D DTY cationic polyester yarn. A 34-inch 40-gauge computerized jacquard double-sided circular knitting machine is used, with a weft density of 68 stitches / inch and a weight of 60 g / m².2 The rest are the same as the description of Example 1.

[0042] Example 5: Only yarn A was replaced with 20D DTY cationic polyester yarn, and yarn B was replaced with 20D DTY polyester yarn. A 34-inch 40-gauge computerized jacquard double-sided circular knitting machine was selected, and the weight of the jacquard fabric was changed to 60g / m². 2 The weft density is 68 stitches / inch, and the rest are the same as described in Example 1.

[0043] Example 6: Only yarn A is made of 50D DTY polyester yarn, and yarn B is made of 50D DTY cationic polyester yarn, with a basis weight of 105 g / m. 2 The rest are the same as the description of Example 1.

[0044] Example 7: Only yarn A is made of 50D DTY cationic polyester yarn, and yarn B is made of 50D DTY polyester yarn, with a basis weight of 105 g / m. 2 The rest are the same as the description of Example 1.

[0045] Although the processing method of fine denier high-density knitted double-sided jacquard fabric of the present invention has been specifically described in conjunction with preferred embodiments, any formal but not substantive changes made by those skilled in the art within the scope of the technical content disclosed in the present invention should be considered as falling within the scope of the technical content disclosed in the present invention.

Claims

1. A processing method for a fine denier high-density knitted double-sided jacquard fabric, characterized in that: The fine denier high-density knitted double-sided jacquard fabric is woven by a circular knitting machine using any combination of the following basic structural units: E, F, G, and H. The first basic structural unit E includes two horizontal rows and two vertical rows. In the first horizontal row, thread A is looped on the front side of the fabric after the first and second stitches, and then looped on the back side of the fabric after the second stitch. In the first horizontal row, thread B is looped only on the back side of the fabric after the first stitch. In the second horizontal row, thread A is looped on the back side of the fabric after the first stitch, and then looped on the front side of the fabric after the second stitch. In the second horizontal row, thread B is looped on the front side of the fabric after the first stitch, and then looped on the back side of the fabric after the second stitch. The second basic structural unit F includes two horizontal rows and two vertical rows. In the first horizontal row, thread A is looped on the front side of the fabric after the first and second stitches, and then looped on the back side of the fabric after the second stitch. In the first horizontal row, thread B is looped only on the back side of the fabric after the first stitch. In the second horizontal row, thread A is looped on the front side of the fabric after the first stitch, and then looped on the back side of the fabric after the first stitch, and then looped on the front side of the fabric after the second stitch. In the second horizontal row, thread B is looped only on the back side of the fabric after the second stitch. The third basic structural unit G includes two horizontal rows and two vertical rows. In the first horizontal row, thread A is looped on the front side of the fabric with the first stitch and then looped on the back side of the fabric with the second stitch. In the first horizontal row, thread B is looped on the back side of the fabric with the first stitch and then looped on the front side of the fabric with the second stitch. In the second horizontal row, thread A is looped on the front side of the fabric with the first stitch and then looped on the back side of the fabric with the first stitch, and then looped on the front side of the fabric with the second stitch. In the second horizontal row, thread B is only looped on the back side of the fabric with the second stitch. The fourth basic structural unit H includes two horizontal rows and two vertical rows. In the first horizontal row, thread A is looped on the front side of the fabric with the first stitch and then looped on the back side of the fabric with the second stitch. In the first horizontal row, thread B is looped on the back side of the fabric with the first stitch and then looped on the front side of the fabric with the second stitch. In the second horizontal row, thread A is looped on the back side of the fabric with the first stitch and then looped on the front side of the fabric with the second stitch. In the second horizontal row, thread B is looped on the front side of the fabric with the first stitch and then looped on the back side of the fabric with the second stitch. The properties of thread A and thread B are different, or the properties of thread A and thread B are the same but their thicknesses are different. When the properties of thread A and thread B are different, different colored floral patterns will be formed on the front of the fabric after dyeing. When the properties of thread A and thread B are the same but their thicknesses are different, embossed floral patterns will be formed on the front of the fabric after dyeing.

2. The processing method of a fine denier high-density knitted double-sided jacquard fabric according to claim 1, characterized in that: The circular knitting machine mentioned is a 34-inch 36-needle, 34-inch 38-needle, or 34-inch 40-needle computerized large jacquard double-sided circular knitting machine.

3. The processing method of a fine denier high-density knitted double-sided jacquard fabric according to claim 1, characterized in that: The weft density of the fine denier high-density knitted double-sided jacquard fabric is 60-70 stitches per inch.

4. The processing method of a fine denier high-density knitted double-sided jacquard fabric according to claim 1, characterized in that: The thread A and the thread B are interchangeable.

5. The processing method of a fine denier high-density knitted double-sided jacquard fabric according to claim 4, characterized in that: The yarn A is 20D-50D DTY polyester yarn, and the yarn B is 20D-50D DTY cationic polyester yarn.

6. The processing method of a fine denier high-density knitted double-sided jacquard fabric according to claim 1, characterized in that: The yarn A is 20-50D DTY cationic polyester yarn, and the yarn B is 20-50D DTY polyester yarn.

7. The processing method of a fine denier high-density knitted double-sided jacquard fabric according to claim 1, characterized in that: The weight of the fine denier high-density knitted double-sided jacquard fabric is 60-105 g / m². 2 .

8. The processing method of a fine denier high-density knitted double-sided jacquard fabric according to claim 5, characterized in that: The yarn A is a 30D / 24F DTY polyester yarn, and the yarn B is a 30D / 36F DTY cationic polyester yarn.

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