Full-width weft insertion rhombic lattice weave and composite film base cloth thereof

Abstract

The invention provides a full-width weft insertion rhombic lattice weave and a composite film base fabric thereof, and relates to the technical field of textile. The full-width weft insertion rhombic lattice weave is formed by weaving two warp knitting comb sections GB1 and GB2 on a full-width weft insertion base, the two warp knitting comb sections are GB1: 10 / 12 / 23 / 21 and GB2: 23 / 21 / 10 / 12 warp knitting rhombic lattice weave formed by the fact that FDY yarn is empty and threaded, and a triangular stable structure is formed by the full-width weft insertion rhombic lattice weave and full-width weft insertion DTY yarn laid between warp knitting coil columns and extension lines of the full-width weft insertion DTY yarn in a full-width mode. The defects in the prior art are overcome, stable weaving lines can be formed, deformation is not prone to occurring, and the finished product rate of the fabric is guaranteed.

Description

Technical Field

[0001] The invention relates to the technical field of textiles, and in particular to a full-width weft-inserted diamond lattice structure and a composite film base fabric thereof. Background Art

[0002] Composite film base fabric is one of the important raw materials for five-layer composite fabrics (film base fabric + adhesive + functional film + adhesive + outer fabric composited together). It can protect the functional film, or make up for or enhance certain properties that the functional film does not have: such as reinforcement, breathability, warmth, skin-friendly, etc. At the same time, compared with the plastic feel of the film, the film base fabric can also play a beautifying and covering effect on textiles, especially functional clothing such as outdoor jackets or down jackets that do not use lining fabrics, which require the decorative and beautifying effect of the film base fabric.

[0003] The color and pattern of the composite film base fabric are the main methods for beautifying the bottom layer of the composite fabric. The color is woven or dyed by yarns of different colors. The pattern can be the weave texture formed by the warp and weft yarns or the pattern formed by dyeing / printing. Generally speaking, the weave pattern formed by the different thickness or weave of the warp and weft yarns is an effective way to beautify the fabric. If the weave pattern formed by the warp and weft yarns of different materials is dyed with different dyes to form different warp and weft weave patterns, it will have a better beautification and decorative effect.

[0004] Composite membrane-based fabrics are relatively light and thin, have low warp and weft yarn coverage, simple structure, simple raw material combination, and single function, so it is difficult to make beautifying patterns such as texture.

[0005] Existing composite film base fabrics are generally divided into two categories in terms of fabric organization: woven and knitted. Woven composite base fabrics, commonly known as "Rejoice yarn", are elastic film base fabrics made of 10D-30D DTY stretch yarn as the warp and weft raw materials, made of light and thin plain weave fabrics, which are dyed, finished, shrunk and shaped. Woven plain weave can only give it a smooth and uniform appearance, and it is not very decorative. The composite base fabrics with knitted structure are divided into two categories: one is a single-sided or light and thin double-sided "four-sided stretch" composite base fabric woven by 15D-30D DTY yarn warp and weft knitting machines (circular machines). Its appearance is composed of horizontally woven coils, mainly solid colors, and the product has good elasticity, but the decorative effect is also average. The other type is the "Kete" warp knitted composite base fabric made of 10-30D FDY yarn woven into a flat mesh structure by a warp knitting machine and then dyed and finished. It is also mainly solid color, with large lateral deformation ability and small warp elasticity, and the decorative effect and feel are also average. In addition, the yarn of FDY material is relatively rigid and there is an obvious sound when rubbing against each other, so it can generally only be used on the fabric of traditional hardshell jackets.

[0006] The main reason why the common composite membrane base fabrics mentioned above have poor beautification and decoration effects is that the raw materials are single and the organizational structure is simple and single, so it is difficult to form a more complex organizational appearance texture and different color effects of warp and weft dyeing. Although some colored yarns can be mixed into the yarn, the woven grey fabric is pre-shrinked, dyed and finalized, and certain patterns (such as horizontal stripes, vertical stripes, warp and weft color grids) are formed on the product appearance to achieve beautification and decoration effects. However, for these thin fabrics, it is difficult to finalize the head pattern to be straight or the grid is straight or not skewed during finalization. Even if it is straight and straight, the weft yarn is particularly easy to be skew during the subsequent inspection and rolling or composite processing, which seriously affects the appearance of the composite on the bottom of the membrane. In many cases, it not only fails to achieve beautification and decoration effects, but also destroys the texture and appearance of the composite fabric due to the problem of oblique weft and weft bending, causing the five-in-one composite fabric to be scrapped. Summary of the invention

[0007] In view of the deficiencies in the prior art, the present invention provides a full-width weft-inserted diamond lattice structure and a composite membrane base fabric thereof, which can form a stable weaving pattern and is not easily deformed, thereby ensuring the yield rate of the fabric.

[0008] To achieve the above objectives, the technical solution of the present invention is implemented through the following technical solutions:

[0009] The invention discloses a full-width weft inlay diamond lattice structure, which is composed of two warp knitting combing nodes GB1 and GB2 woven together on a full-width weft inlay base, and the two warp knitting combing nodes are GB1:10 / 12 / 23 / 21 and GB2:23 / 21 / 10 / 12 warp knitting diamond lattice structures formed by one empty and one inserted FDY yarn, and a triangular stable structure formed by the full-width weft inlay DTY yarn fully laid between the warp knitting coil circle column and its extension line.

[0010] Preferably, the full-width weft-inserted diamond lattice structure is woven on a full-width weft-inserted warp knitting machine with a warp density of E20 to E32 or above.

[0011] Preferably, the raw material of the warp yarn in the full-width weft-inserted diamond lattice structure is FDY, any one of nylon 6, nylon 66 or other polyester (such as cationic polyester, ordinary PET, PBT, PTT, or their blended T800, T400), with a fineness range of 10D-30D and an F number of 5F-36F.

[0012] Preferably, the raw material of the weft yarn in the full-width weft-inserted diamond lattice structure is DTY made of any one of nylon 6, nylon 66 or other polyester (such as cationic polyester, ordinary PET, PBT, PTT, or their blended T800, T400), and its fineness ranges from 20D to 50D and F number ranges from 12F to 48F.

[0013] The full-width weft-lined diamond-shaped composite film base fabric is prepared by using the full-width weft-lined diamond-shaped structure as the grey fabric, and specifically includes any one of the following:

[0014] (1) The same material is selected for FDY and DTY in the full-width weft-inserted diamond grid structure, and the grey cloth is pre-shrunk, dyed and shaped to form a diamond grid elastic composite film base fabric of the same color;

[0015] (2) Different materials are selected for FDY and DTY in the full-width weft-inserted diamond grid structure. The grey cloth is pre-shrunk and then dyed with dyes of different components to form a two-color diamond grid elastic composite membrane base fabric.

[0016] Preferably, during the forming process of the full-width weft-lined diamond-lattice composite membrane base fabric, the ratio of the width of the grey fabric on the machine to the width of the finished product is 1.25-1.5.

[0017] Preferably, when the weft yarn in the full-width weft-inserted diamond lattice structure is ordinary polyester DTY, the ratio of the machine width of the grey cloth to the finished product width is 1.25-1.4; when the weft yarn in the full-width weft-inserted diamond lattice structure is high-elastic material DTY, the ratio of the machine width of the grey cloth to the finished product width is 1.35-1.5.

[0018] Preferably, during the forming process of the full-width weft-lined diamond-lattice composite membrane base fabric, the ratio of the weft density of the grey fabric on the machine to the weft density of the finished product is 1.0-1.2.

[0019] Preferably, when the warp yarn in the full-width weft-inserted diamond lattice structure is ordinary polyester FDY, the ratio of the weft density of the grey cloth on the machine to the weft density of the finished composite membrane base cloth is 1.1-1.18; when the warp yarn in the full-width weft-inserted diamond lattice structure is high-elastic material DTY, the ratio of the weft density of the grey cloth on the machine to the weft density of the finished product is 1.0-1.08.

[0020] The present invention provides a full-width weft-inserted diamond grid structure and a composite film base fabric thereof, which has the following advantages over the prior art:

[0021] The present invention designs a new full-width weft-inserted warp knitting structure: on the full-width weft-inserted base, two specially designed two-needle warp plain weave comb sections: GB1: 10 / 12 / 23 / 21 and GB2: 23 / 21 / 10 / 12 are one empty and one inserted, and they weave diamond-shaped patterns on the front and back sides of the weft yarn. If the warp yarns forming the weaving patterns and the full-width weft-inserted weft yarns themselves have different colors or materials, then the grey fabric will form a two-color effect with the base weft yarn after pre-shrinking, dyeing, finishing and shaping, which can further play a beautifying and decorative role, such as Figure 1 As shown, multiple diamond grid structures are formed during the whole weaving process, and the organization theory diagram of a single diamond grid on the weft-inserted base is shown in Figure 2As shown, at the four corners of the rhombus, when the red and blue comb node coils are not woven into a net by other warp knitting coils on the weft yarn (because the two comb nodes are one empty and one worn), due to the tension of weaving and processing, the red and blue closed coils shown in the figure will slide close to each other to form the four vertices of the rhombus, and the open coils in the middle of the four sides are just located at the midpoints of the four sides. After pre-shrinking, dyeing and finalizing, the composite membrane base fabric is formed. Even if the weft yarn has a certain bend and tilt during finalizing, the raised rhombus grid thereon cannot see the problem of the grid being irregular, which effectively avoids the uneven grid size and irregular grid shape caused by the twill bending of the thin and loose composite membrane base fabric. The elastic base formed by the bending of the DTY weft yarn pre-shrinkage and expansion fiber supports the deformation of the warp rhombus grid in any direction, and at the same time, the elastic force restores the shape of the rhombus grid after the external force is removed. It forms a stable elastic triangle combination with the rhombus grid formed by the warp yarn. The finished product objectively has good elasticity and shape and size stability, which effectively avoids the defects of easy deformation during dyeing and finishing or use of general grids. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 This is a schematic diagram of the full-width weft-inserted diamond grid structure of the present invention;

[0023] Figure 2 It is a schematic diagram of the organization theory of a single diamond grid on a weft-inserted substrate of the present invention;

[0024] Figure 3 It is a schematic diagram of GB1 weaving in the full-width weft-inserted diamond grid structure of the present invention;

[0025] Figure 4 It is a schematic diagram of GB2 weaving in the full-width weft-inserted diamond grid structure of the present invention;

[0026] Figure 5 Schematic diagram of a single diamond structure on the front side of the full-width weft-inserted diamond grid structure in Example 1 of the present invention;

[0027] Figure 6 Schematic diagram of a single diamond structure on the reverse side of the full-width weft-inserted diamond grid structure in Example 1 of the present invention;

[0028] Figure 7 This is a schematic diagram of the full-width weft-lined diamond-shaped composite membrane base fabric in Example 1 of the present invention. DETAILED DESCRIPTION

[0029] In order to make the purpose, technical solution and advantages of the embodiments of the present invention clearer, the technical solution in the embodiments of the present invention is clearly and completely described below in combination with the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0030] Embodiment 1:

[0031] Preparation of full-width weft-lined diamond-shaped composite membrane base fabric:

[0032] 24 needle fine regular diamond grid (black yarn) + weft lining white background:

[0033] 1: Grey cloth process:

[0034] The machine width is 164+2x2=168 inches, double width, 8 heads each, each PA6 FDY 20D / 12F, 252 threads / head.

[0035] The width of the machine is 208.28cm x 2 pieces.

[0036] GB1: 10 / 12 / 23 / 21 / / One empty and one worn A warp yarn black polyester FDY 30D / 24F let-off: 1220mm / rack = ratio 5.84x

[0037] GB2: 23 / 21 / 10 / 12 / / One empty and one worn B warp yarn black polyester FDY 30D / 24F let-off: 1220mm / rack = ratio 5.84x

[0038] Weft yarn: High elastic light mesh PESDTY 50D / 48F micro mesh high elastic special weft yarn.

[0039] The weft density on the machine is 23 threads / cm.

[0040] 2. Post-finishing process:

[0041] ST pre-shrinkage---high temperature setting (185℃)--degreasing overflow dyeing---dehydration---opening---low temperature setting (165℃)---fabric inspection, grading and packaging---warehouse

[0042] ST: 110-115°: After treatment, the width of the cloth carriage is 130-135cm, and the weft density is 21-22 strands / cm. Steaming machine parameters: oil temperature 190℃, pre-shrinkage 1: -14%, pre-shrinkage 2: -19%.

[0043] After high temperature shaping, the width is 153±2cm, the weft density is 20.5 strands / cm;

[0044] Before dyeing, degrease at 100℃ for 30 minutes, degreasing agent 0.5g / L. After overflow dyeing, the weft density is 21-22 strands / cm, and the width is 142-145cm.

[0045] After low-temperature shaping, the width is 154-155cm, the weft density is 20-20.5 strands / cm, and the final yield is 113%;

[0046] The finished product has no moiré and aurora phenomenon. Thickness: 0.17mm

[0047] The square weight of the finished product is 29.5±1g / m 2 , warp density: 12.63 strands / cm, weft density is 20.5 strands / cm.

[0048] The performance parameters of the finished composite film base fabric are as follows:

[0049] No hooking, warp elasticity C>8.0%, weft normal elasticity T>20% (3cm width, elongation tested under 200 carat force), 40℃ machine wash shrinkage in both warp and weft is less than ≤1.5%.

[0050] Features:

[0051] Reference Figure 5-7 The finished product has a plump and smooth appearance, is easy to fit without deformation, does not leak glue (small back transparency), has high bonding fastness, is resistant to friction and pilling, and protects the membrane well! Suitable for use as a bottom layer of the membrane bonding cloth, with good anti-moiré effect. It has little effect on the air permeability and moisture permeability of the membrane. The warp micro-elasticity cooperates with the stretching of the membrane during bonding, and the fit is flat and does not curl. It has good size and shape stability, good washability, and a delicate appearance, which is suitable for the stretching and retraction of sports fabrics. The small black diamond oblique grid is 1.59x1.46mm, which beautifies the appearance and the pattern does not deform after bonding.

[0052] Embodiment 2:

[0053] Preparation of full-width weft-lined diamond-shaped composite membrane base fabric:

[0054] 24 needle fine regular diamond grid (cationic non-woven) + weft insertion (light gray):

[0055] 1: Grey cloth process:

[0056] The machine width is 164+2x2=168 inches, double width, 8 heads each, cationic PES FDY 30D / 24F, 252 threads / head.

[0057] The width of the machine is 208.28cm x 2 pieces.

[0058] GB1: 10 / 12 / 23 / 21 / / One empty and one threaded warp A warp cation FDY 30D / 24F approx. let-off: 1220mm / rack = 5.84x

[0059] GB2: 23 / 21 / 10 / 12 / / One empty and one threaded B warp cation FDY 30D / 24F Warp let-off: 1220mm / rack = 5.84x

[0060] Weft yarn: High elastic light mesh PESDTY 50D / 48F micro mesh high elastic special weft yarn;

[0061] The weft density on the machine is 23 threads / cm;

[0062] 2: Post-finishing process flow:

[0063] ST pre-shrinkage---high temperature setting (185℃)--degreasing overflow dyeing---dehydration---opening---low temperature setting (165℃)---fabric inspection, grading and packaging---warehouse

[0064] ST: 110-115℃, the width of the cloth carriage after treatment is 130-135cm, and the weft density is 21-22 strands / cm. Steaming machine parameters: oil temperature 190℃, pre-shrinkage 1: -14%, pre-shrinkage 2: -19%.

[0065] After high temperature shaping, the width is 153±2cm, the weft density is 20.5 strands / cm,

[0066] Before dyeing, degrease the product at 100℃ for 30 minutes with 0.5g / L of degreasing agent.

[0067] When dyeing in overflow tank, cationic disperse dyes are used to dye the cationic polyester warp diamond grid of the warp, and ordinary polyester medium-temperature disperse dyes are used to dye the base light gray of the weft. Because the two dyes basically do not stain each other, they can be dyed in the same bath at medium temperature. After overflow dyeing, the weft density is 21-22 strands / cm and the width is 142-145cm.

[0068] After low temperature setting, the width is 154-155cm, the weft density is 20-20.5 / cm, the warp stripes must be straight, and the weft yarns must be as straight as possible! The finished product rate is about 112-113%!

[0069] The appearance has no moiré and aurora phenomenon, thickness: 0.17mm

[0070] The square weight of the finished product is 36-37g / m 2 , warp density: 12.63 strands / cm, weft density is 20.5 strands / cm, and the yield rate is 113%.

[0071] The performance parameters of the finished composite film base fabric are as follows:

[0072] No hooking, warp elasticity C>8.0%, weft normal elasticity T>20% (3cm width, elongation tested under 200 carat force), 40℃ machine wash shrinkage in both warp and weft is less than ≤1.5%.

[0073] Features:

[0074] The appearance is plump and smooth, easy to fit without deformation, no glue leakage (small back transparency), high bonding fastness, friction resistance and anti-pilling, good protection of the membrane, suitable for use as the bottom layer of the membrane. Good anti-moiré effect. Little effect on the air permeability and moisture permeability of the membrane. The warp micro-elasticity cooperates with the stretching of the membrane during lamination, and the lamination is flat without curling. Good size and shape stability, good washability; delicate appearance, greater lateral elasticity than Rejoice yarn, suitable for the stretching and retraction of sports fabrics. Light-bottomed dark gray diamond-shaped oblique grid 1.59x1.46mm, beautifies the appearance, and the pattern does not deform after lamination.

[0075] Embodiment 3:

[0076] Preparation of full-width weft-lined diamond-shaped composite membrane base fabric:

[0077] 24 needle fine regular diamond grid (nylon 6) + different background colors of weft insertion

[0078] 1: Grey cloth process:

[0079] The machine width is 174+2x2=178 inches, double width, 9 heads each, PA6 FDY 15D / 6F, 237 threads / head.

[0080] The width of the machine is 221cm x 2 pieces.

[0081] GB1: 10 / 12 / 23 / 21 / / One empty and one threaded warp A warp PA6FDY 15D / 6F approx. let-off: 1170mm / rack = 6.825x

[0082] GB2: 23 / 21 / 10 / 12 / / One empty and one threaded B warp PA6FDY 15D / 6F Warp let-off: 1170mm / rack = 6.825x

[0083] Weft yarn: low temperature dyed polyester: Hengli "Qinglun" high elastic light net PESDTY 30D / 24F micro net high elastic special weft yarn,

[0084] The weft density on the machine is 28 threads / cm;

[0085] 2: Post-finishing process flow:

[0086] ST pre-shrinkage---high temperature setting (180℃)--degreasing overflow dyeing---dehydration---opening---low temperature setting (162℃)---fabric inspection, grading and packaging---warehouse

[0087] ST: 110-115℃, the width of the cloth carriage after treatment is 130-135cm, and the weft density is 25-26 strands / cm. Steaming machine parameters: oil temperature 190℃, pre-shrinkage 1: -14%, pre-shrinkage 2: -19%.

[0088] After high temperature shaping, the width is 155±2cm, the weft density is 25.5 strands / cm;

[0089] Before dyeing, treat with 100± for 30 minutes and use 0.5g / L of degreasing agent.

[0090] When the color of nylon diamond grid does not need to be too dark, use acid dye to dye nylon 6 warp diamond grid, and disperse dye to dye polyester light color. It can be dyed in the same bath in the overflow dyeing machine. After dyeing, because the base color of polyester weft yarn is light, it does not need to be restored, and only the nylon needs to be fixed.

[0091] After overflow dyeing, the weft density is 27±0.5 yarns / cm and the width is 142-145cm.

[0092] After low temperature shaping, the width is 155-156cm, the weft density is 26±0.5 strands / cm, and the yield is 110%;

[0093] The appearance has no moiré and aurora phenomenon, thickness: 0.15mm

[0094] Square gram weight: 7+7+12.3=26.3+-1g / m2

[0095] The square gram weight of the finished product is 26.3+-1g / m2, the warp density is 13.47 strands / cm, the weft density is 25.9 strands / cm, and the yield rate is between 107-109%.

[0096] Important performance parameters of finished products:

[0097] No hooking, warp elasticity C>10.0%, weft normal elasticity T>24% (3cm width, elongation % tested under 200 carat force), 40° machine wash shrinkage in both warp and weft is less than ≤1.5%.

[0098] Features:

[0099] The appearance is plump and smooth, easy to fit without deformation, no glue leakage (small back transparency), high bonding fastness, friction resistance and anti-pilling, good protection of the membrane, suitable for use as the bottom layer of the membrane. Good anti-moiré effect. Little effect on the air permeability and moisture permeability of the membrane. The warp micro-elasticity cooperates with the stretching of the membrane during lamination, and the lamination is flat and does not curl. Good size and shape stability, good washability, delicate appearance, greater transverse elasticity than Rejoice yarn, suitable for the stretching and retraction of sports fabrics. Different color diamond oblique grid 1.5x1.54mm, beautify the appearance, and the pattern does not deform after lamination.

[0100] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit the same. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that the technical solutions described in the aforementioned embodiments may still be modified, or some of the technical features may be replaced by equivalents. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A full-width weft-inserted diamond grid structure, characterized in that: The full-width weft inlay diamond lattice structure is composed of two warp knitting combing nodes GB1 and GB2 woven together on the full-width weft inlay base, and the two warp knitting combing nodes are GB1:10 / 12 / 23 / 21 and GB2:23 / 21 / 10 / 12 warp knitting diamond lattice structures formed by one empty and one inserted FDY yarn, and a triangular stable structure formed by the full-width weft inlay DTY yarn laid between the warp knitting coil circle column and its extension line.

2. The full-width weft-inserted diamond grid structure according to claim 1, characterized in that: The full-width weft-inserted diamond lattice structure is woven on a full-width weft-inserted warp knitting machine with a warp density of E20 to E32 or above.

3. The full-width weft-inserted diamond grid structure according to claim 1, characterized in that: The raw material of the warp yarn in the full-width weft-inserted diamond lattice structure is FDY, which is any one of nylon 6, nylon 66 or other polyester materials, and its fineness ranges from 10D to 30D, and the F number ranges from 5F to 36F.

4. The full-width weft-inserted diamond grid structure according to claim 1, characterized in that: The raw material of the weft yarn in the full-width weft-inserted diamond lattice structure is DTY made of any one of nylon 6, nylon 66 or other polyester materials, and the fineness ranges from 20D to 50D, and the F number ranges from 12F to 48F.

5. A full-width weft-lined diamond-shaped composite film base fabric, characterized in that: The composite film base fabric is prepared by using any full-width weft-inserted diamond lattice structure of claims 1 to 4 as a grey fabric, and specifically includes any one of the following: (1) The same material is selected for FDY and DTY in the full-width weft-inserted diamond grid structure, and the grey cloth is pre-shrunk, dyed and shaped to form a diamond grid elastic composite film base fabric of the same color; (2) Different materials are selected for FDY and DTY in the full-width weft-inserted diamond grid structure. The grey cloth is pre-shrunk and then dyed with dyes of different components to form a two-color diamond grid elastic composite membrane base fabric.

6. The full-width weft-lined diamond-shaped composite film base fabric according to claim 5, characterized in that: During the forming process of the full-width weft-lined diamond-shaped composite membrane base fabric, the ratio of the width of the grey fabric on the machine to the width of the finished product is 1.25-1.

5.

7. The full-width weft-lined diamond-shaped composite film base fabric according to claim 6, characterized in that: When the weft yarn in the full-width weft-inserted diamond lattice structure is ordinary polyester DTY, the ratio of the width of the grey cloth on the machine to the width of the finished product is 1.25-1.4; when the weft yarn in the full-width weft-inserted diamond lattice structure is high-elastic material DTY, the ratio of the width of the grey cloth on the machine to the width of the finished product is 1.35-1.

5.

8. The full-width weft-lined diamond-shaped composite film base fabric according to claim 5, characterized in that: During the forming process of the full-width weft-lined diamond-lattice composite membrane base fabric, the ratio of the weft density of the grey fabric on the machine to the weft density of the finished product is 1.0-1.

2.

9. The full-width weft-lined diamond-shaped composite film base fabric according to claim 8, characterized in that: When the warp yarn in the full-width weft-inserted diamond lattice structure is ordinary polyester FDY, the ratio of the weft density of the grey cloth on the machine to the weft density of the finished composite membrane base cloth is 1.1-1.18; when the warp yarn in the full-width weft-inserted diamond lattice structure is high-elastic material DTY, the ratio of the weft density of the grey cloth on the machine to the weft density of the finished product is 1.0-1.08.

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