Full-width weft insertion single-comb variable chaining composite weave and application thereof
By inserting the warp structure of the needle position laterally shifted in the full-width weft single-comb changing chain composite tissue, the problem of lack of elasticity and easy extraction of warp yarns for existing composite base cloth for membranes is solved, and higher warp elasticity and lower curling and weft warping are achieved.
Patent Information
- Application Number
- CN202510008460.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-01-03
- Publication Date
- 2025-04-01
AI Technical Summary
The existing composite base cloth for films lacks elasticity during processing and use, and is easily pulled out by external forces against the weaving direction, resulting in damage to the group and appearance, and serious problems with curling edges and weft warping.
The full-width weft liner single comb changing chain composite tissue is used to insert the horizontally shifted warp structure on the braided chain tissue of the single comb section, which increases the deformation ability and elasticity of the warp tissue, and prevents the warp thread from destroying the tissue and appearance.
It effectively improves the warp elasticity of the tissue, reduces the possibility that the braided warp yarn is drawn out by external forces from the reverse braiding direction, reduces the degree of curling edges and weft warping, and improves the overall performance of the composite base cloth for films.
Smart Images
Figure CN119736756A_ABST
Abstract
Description
Technical Field
[0001] The invention relates to the technical field of full-width weft-inserted braided structures, and in particular to a full-width weft-inserted single-comb variable chain braided composite structure and application thereof. Background Art
[0002] The composite base fabric for membrane is a kind of light and thin fabric for lamination. It is generally laminated on the reverse side of the membrane with dot-shaped PUR glue (moisture-crosslinked polyurethane hot melt adhesive), which plays a role in strengthening and protecting the membrane, while not affecting the normal barrier / moisture permeability / breathability of the membrane. It is generally a light and thin fabric composed of simple fabric structure or fine denier yarn. For example: single-sided weft knitting below 50D; double-sided weft knitting below 20D; rejoice yarn below 50D (polyester filament woven plain weave); special warp knitting below 30D; and traditional 20D and below chain warp yarn 30D and below weft-inserted warp knitting composite base fabric varieties.
[0003] The existing composite base fabrics for membranes are all simple and basic fabric structures, and their performance has its own advantages and disadvantages. For example, the cot and single-sided weft-knitted membrane base fabrics have good elasticity, but are easy to curl during processing and lamination; the Rejoice yarn variety has good flatness and appearance uniformity, but the surface is easily scratched and pilled during dyeing and finishing, and the weft yarn skew is difficult to control during shaping and processing; the full-width weft-inserted warp knitted variety has high porosity and good air permeability, but the warp yarn structure is not elastic, and the warp yarn is easily pulled out in the reverse weaving direction during processing and use, destroying the structure and appearance. Therefore, how to set up a weaving structure with high elasticity, anti-chain warp yarn being pulled out from the reverse weaving direction by external force, and other comprehensive performance is an important research direction at this stage. Summary of the invention
[0004] In view of the shortcomings of the prior art, the present invention provides a full-width weft-inserted single-comb variable chain composite structure and its application, which effectively improves the warp elasticity of the structure and effectively prevents curling during the preparation of the grey cloth, thereby facilitating its application as a composite base fabric for membrane.
[0005] The warp elasticity of the traditional full-width weft-inserted chain weave is improved, and the possibility of the chain weave warp yarn being pulled out by external force from the reverse weaving direction is reduced; the warping degree and curling degree of the weft yarns on both sides of the grey cloth on the traditional warp flat full-width weft-inserted machine and the excessive warp feed amount of the traditional warp flat weave are also reduced, thereby reducing the square gram weight of the composite base fabric for the membrane of the full-width weft-inserted warp flat weave.
[0006] To achieve the above objectives, the technical solution of the present invention is implemented through the following technical solutions:
[0007] The full-width weft insertion single comb variable chain composite structure is a warp plain structure with needle position shifted inserted into the chain structure with a single comb section fully inserted; and the warp plain structure is a two-needle warp plain structure, and the weaving direction of the two-needle warp plain structure is a left-right cycle, and the corresponding cycle segment has the opposite numerical sequence to the chain structure matched with it. By regularly and evenly inserting the warp plain structure with needle position shifted on the chain structure with a single comb section fully inserted, the deformation ability and elasticity of the warp structure and the interlocking ability of the warp yarn coils are increased. This prevents the phenomenon of warp yarn drawing and damaging the structure and appearance during the weaving, dyeing, finishing and laminating process of the composite base fabric.
[0008] Preferably, the number of cycles is controlled according to the number of needles controlled on the surface of the full-width weft insertion warp knitting machine faceplate, that is, the number of cycles is an integer multiple of the total number of needles in one cycle. For example, for the most common M16 faceplate, the number of cycles of the combination of chain knitting as the main warp and flat warp as the auxiliary can be 1 or 2.
[0009] Preferably, the chain stitch and the two-needle warp stitch are both closed stitches.
[0010] Preferably, the variable chain braid composite tissue selects an M16 faceplate, and the sequence number combination of the chain braid tissue and the two-needle warp plain tissue is 12 / 12 / 12 / 12 / 12 / 12 / 12 / 10 / 21 / 21 / 21 / 21 / 21 / 21 / 23 / / one cycle combination or 12 / 12 / 12 / 10 / 21 / 21 / 21 / 23 / / two cycle combinations. Considering the maximum possible tissue elasticity, two cycle combinations on an M16 faceplate are selected, and the closed faceplate sequence number is: 12 / 12 / 12 / 10 / 21 / 21 / 21 / 23 / / .
[0011] Preferably, the needle density of the variable chain composite structure is selected from E20 to E32; the most common machine gauge may be E24 or E28; E28 machine gauge can take into account both light weight and delicate and smooth appearance, and is a more cost-effective machine gauge selection.
[0012] Preferably, the warp threads of the variable braided chain composite structure are nylon or polyester FDY filaments, and the specifications are 10D-30D / 5F-24F.
[0013] Preferably, when the warp is FDY filament of nylon 6 or 66, the specifications are 15D / 5F and 20D / 12F; when the warp is polyester FDY filament, the specifications are 15D / 12F and 20D / 24F.
[0014] Preferably, the weft yarn of the variable chain braided composite structure is DTY light mesh fine denier yarn with a specification of 15D-50D / 12F-48F.
[0015] The above-mentioned full-width weft-inserted single-comb variable chain composite structure can be used to prepare composite base fabric for membrane.
[0016] The present invention provides a full-width weft insertion single-comb variable chain composite structure, which has the following advantages compared with the prior art:
[0017] The invention improves the elasticity of the warp direction of the traditional full-width weft-inserted chain weave structure, reduces the possibility that the chain weave warp yarn is pulled out by external force from the reverse weaving direction; it also reduces the warping degree and curling degree of the weft yarns on both sides of the grey cloth on the traditional warp-flat full-width weft-inserted machine, as well as the excessively long warp feed amount of the traditional warp-flat structure, thereby reducing the square gram weight of the composite base fabric for the membrane of the full-width weft-inserted warp-flat structure. BRIEF DESCRIPTION OF THE DRAWINGS
[0018] Figure 1 This is a 12 / 12 / 12 / 10 / 21 / 21 / 21 / 23 cycle organization diagram of a complete cycle in Example 1 of the present invention. DETAILED DESCRIPTION
[0019] 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.
[0020] Embodiment 1:
[0021] Full-width weft insertion single comb variable chain compound structure (3 chain + 1 warp flat closed structure):
[0022] 1. Grey cloth process: 170 inches double width on the machine, 8 bobbins, each with 593 threads.
[0023] The upper width of the machine is 215.9cm (the actual width of the scissor mouth is 213cm) x 2 pieces,
[0024] The warp let-off is 680mm / rack, and the magnification is about 4.25x
[0025] GB1: 12 / 12 / 12 / 10 / 21 / 21 / 21 / 23 full wear PES FDY semi-gloss 20D / 24F
[0026] Weft yarn: High elastic light mesh PESDTY 30D / 36F micro mesh high elastic special weft yarn.
[0027] The weft density on the machine is 30 threads / cm.
[0028] When threading the yarn, please make sure to leave 2 yarns less in the middle of the scissors, and then leave 6 yarns empty at about 1cm from the edge of the fabric (where the scissors are for the edge).
[0029] 2. Post-finishing process:
[0030] ST pre-shrinkage (115℃): after treatment, the width of the cloth is 125±5cm, and the weft density is 33.5-34 strands / cm;
[0031] High temperature setting (188℃): pre-shrinkage 1: -14%, pre-shrinkage 2: -19%; width after high temperature setting: 155±2cm, weft density 33.5-34 roots / cm, weft yarn should be as straight as possible; setting machine parameters: weft straightener tension 45, lower overfeed +6.5%, upper overfeed +12%, needle wheel brush: +2.6%, cloth wheel over position 3; the warp micro-elasticity of the cloth is not inferior to that of the steamed grey cloth;
[0032] Degreasing overflow dyeing: Degreasing treatment at 100℃ for 30 minutes before dyeing, degreasing agent 0.5g / l. After overflow dyeing, the weft density is 35.5-36 strands / cm, and the width is 142-145cm.
[0033] Low temperature setting (165℃): width 154-156cm, weft density 34.5-35 yarns / cm, warp stripes must be straight, and weft yarns should be as straight as possible.
[0034] The square weight of the finished product is 30-32g / m 2 , warp density: 15.2 strands / cm, weft density is 33.5-34 strands / cm, and the yield rate is 89-90%
[0035] Important performance parameters of finished products: strong velvety feel, no hooking (stickiness, snagging or pilling), warp elasticity C>10%, weft normal elasticity T>25% (3cm width, elongation tested under 200 carat force), 40℃ machine wash shrinkage in both warp and weft less than <1.5%.
[0036] And the product has the following features:
[0037] It feels super soft, with plain texture with a little disordered lines, and a plump appearance, which can cover certain defects. It is flat and easy to fit without deformation, no glue leakage (little back transparency), high lamination firmness, friction and pilling resistance, good protection for the film, and suitable for use as a film bottom layer laminating cloth.
[0038] The anti-moire effect is better than that of general tricot, weft knitting and low-elastic woven base fabrics. It has little effect on the air permeability and moisture permeability of the membrane.
[0039] The small elasticity in the warp direction cooperates with the stretching of the film during lamination, so the lamination is smooth without curling.
[0040] Good dimensional and shape stability and good washability.
[0041] It has a delicate appearance and greater lateral elasticity than Rejoice yarn, making it suitable for the stretching and shrinkage of sports fabrics.
[0042] Embodiment 2:
[0043] Full-width weft insertion single comb variable chain compound structure (3 chain + 1 warp flat closed structure):
[0044] 1: Grey cloth process: 170 inches double width on the machine, 8 heads, each with 593 threads.
[0045] The upper width of the machine is 215.9cm (the actual width of the scissor mouth is 213cm) x 2 pieces,
[0046] The warp let-off is 658mm / rack, and the magnification is about 4.38x
[0047] GB1: 12 / 12 / 12 / 10 / 21 / 21 / 21 / 23 full wear PES FDY semi-gloss 15D / 12F
[0048] Weft yarn: Special high elastic light mesh PES / T8 DTY 20D / 24F soft cotton feeling low temperature dyed high elastic weft yarn.
[0049] The weft density on the machine is 32 threads / cm.
[0050] When threading the yarn, please make sure to leave 2 yarns less in the middle of the scissors, and then leave 6 yarns empty at about 1cm from the edge of the fabric (where the scissors are for the edge).
[0051] 2. Post-finishing process:
[0052] ST pre-shrinkage (115℃): after treatment, the width of the cloth carriage is 125±5cm, and the weft density is 33.5-34 strands / cm. Steaming machine parameters: oil temperature 190°, pre-shrinkage 1: -14%, pre-shrinkage 2: -19%;
[0053] High temperature setting (188℃): after high temperature setting, the width is 153±2cm, the weft density is 33.5-34 roots / cm, and the weft yarn should be as straight as possible; the setting machine parameters: the tension of the weft straightener is 45, the lower overfeed is +6.5%, the upper overfeed is +12%, the brush of the needle wheel is +2.6%, and the over position of the cloth wheel is 3; the warp elasticity of the cloth is not inferior to that of the steamed grey cloth;
[0054] Degreasing overflow dyeing: Degreasing treatment at 100℃ for 30 minutes before dyeing, degreasing agent 0.5g / l. After overflow dyeing, the weft density is 35.5-36 strands / cm, and the width is 140-143cm.
[0055] Low temperature setting (165℃): After low temperature setting, the width is 151-153cm, the weft density is 34.5-35 strands / cm, the warp stripes must be straight, and the weft yarns should be as straight as possible.
[0056] The square weight of the finished product is 22.5-23.5g / m 2 , warp density: 15.2 strands / cm, weft density is 33.5-34 strands / cm, and the yield rate is between 89-90%.
[0057] Important performance parameters of finished products: strong velvety feel, no hooking (stickiness, snagging or pilling), warp elasticity C>10%, weft normal elasticity T>25% (3cm width, elongation tested under 200 carat force), 40℃ machine wash shrinkage in both warp and weft less than <1.5%.
[0058] 4. Product features:
[0059] It feels light and ultra soft, with a strong velvety feel, and has a flat texture with a little disordered lines, making it look plump and can cover certain defects. It is flat and easy to fit without deformation and without glue leakage (little back transparency). It has high lamination firmness, is resistant to friction and pilling, and has good protection for the membrane. It is suitable for use as a membrane base layer laminating cloth.
[0060] The anti-moire effect is better than that of general tricot, weft knitting and low-elastic woven base fabrics. It has little effect on the air permeability and moisture permeability of the membrane.
[0061] The small elasticity in the warp direction cooperates with the stretching of the film during lamination, so the lamination is smooth without curling.
[0062] Good dimensional and shape stability and good washability.
[0063] It has a delicate appearance and greater lateral elasticity than Rejoice yarn, making it suitable for the stretching and shrinkage of sports fabrics.
[0064] 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. Full-width weft insertion single comb variable chain composite structure, characterized by: The variable chain braid composite structure is a warp plain structure with a horizontally shifted needle position inserted into the chain braid structure with a single comb section fully inserted; The warp plain fabric is a two-needle warp plain fabric, and the knitting direction of the two-needle warp plain fabric is one left and one right cycle, and the numerical sequence numbers on the corresponding cycle segments are opposite to those of the chain knitting fabric matched therewith.
2. The full-width weft insertion single-comb variable chain composite structure according to claim 1, characterized in that: The number of cycles of the cycle is controlled according to the number of needles controlled on the surface of the faceplate of the full-width weft insertion warp knitting machine, that is, the number of cycles is an integral multiple of the total number of needles in one cycle.
3. The full-width weft insertion single-comb variable chain composite structure according to claim 1, characterized in that: The chain stitch and two-needle warp plain stitch are both closed stitches.
4. The full-width weft insertion single-comb variable chain composite structure according to claim 3 is characterized in that: The variable chain braid composite structure selects an M16 disc, and the sequence number combination of the chain braid structure and the two-needle warp plain structure is 12 / 12 / 12 / 12 / 12 / 12 / 12 / 10 / 21 / 21 / 21 / 21 / 21 / 21 / 21 / 23 / / one cycle combination or 12 / 12 / 12 / 10 / 21 / 21 / 21 / 23 / / two cycle combinations.
5. The full-width weft insertion single-comb variable chain composite structure according to claim 1, characterized in that: The needle density machine gauge of the variable chain composite structure is selected from E20 to E32.
6. The full-width weft insertion single-comb variable chain composite structure according to claim 1, characterized in that: The warp threads of the variable braided chain composite structure are selected from nylon or polyester FDY filaments, and the specifications are 10D-30D / 5F-24F.
7. The full-width weft insertion single-comb variable chain composite structure according to claim 6, characterized in that: When the warp is nylon 6 or 66 FDY filament, the specifications are 15D / 5F, 20D / 12F; when the warp is polyester FDY filament, the specifications are 15D / 12F and 20D / 24F.
8. The full-width weft insertion single-comb variable chain composite structure according to claim 1, characterized in that: The weft yarn of the variable chain braided composite structure is DTY light mesh fine denier yarn with a specification of 15D-50D / 12F-48F.
9. Use of the full-width weft-inserted single-comb variable chain composite structure as claimed in any one of claims 1 to 8 in preparing composite base fabric for membrane.