A preparation method of double jacquard mesh cloth
Through the 8-buckle double jaccar jacquard weaving process and the differentiated treatment of polyester fiber multifilament materials, the problems of large rigidity and poor waterproof performance of single filament are solved, and the flexibility is improved and the waterproof function is given, forming flexibility Double Jakar jacquard mesh with pattern and breathability.
Patent Information
- Application Number
- CN201910421169.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- Filing Date
- 2019-05-27
- Publication Date
- 2024-12-24
- Estimated Expiration
- 2039-05-27
AI Technical Summary
The middle of the existing double Jacques jacquard mesh is generally polyester low-elastic wire or polyester FDY wire. The single wire is rigid and easy to damage, resulting in difficulty in weaving and poor waterproof performance of the product.
Using the double Jakar jacquard weaving process of 8-buckles, the polyester fiber multifilament material and differentiated spinnerets form flexible monofilament, which increases the drafting and heat setting of spinning, and combines segmented warping and waterproofing finishing. , form a double jacquard mesh cloth with good waterproofing function.
It improves the flexibility and extension of the monofilament, reduces uneven strips, and makes the monofilament smoothly weaving on the Jaka comb, has good product toughness, flexible flower shape changes, and has good breathability and waterproofing.
Smart Images
Figure CN111996657B_ABST
Abstract
Description
Technical Field
[0001] The invention relates to the field of textile materials, and in particular to a method for preparing a double jacquard mesh cloth. Background Art
[0002] Jacquard mesh is a product woven on a loom with a jacquard device to produce a variety of patterns compared to conventional basic mesh. Currently, the more popular type of mesh in the shoe material market is single jacquard mesh, which can be jacquard on one side of the mesh to form a pattern effect; the other type is double jacquard mesh, which can be jacquard on both sides of the mesh to form a double-sided jacquard effect. However, the double jacquard mesh formed by the prior art is generally made of polyester low-elastic yarn or polyester FDY filament in the middle, and the monofilament is more rigid and easily damages the jacquard needle during the production process, resulting in failure to weave normally.
[0003] Chinese patent publication number CN108265386A relates to a sandwich double jacquard weaving process, which selects a double needle bed double jacquard jacquard warp knitting machine with seven combs, and the seven combs are comb GB1, jacquard comb JB1.1, jacquard comb JB1.2, jacquard comb JB2.1, jacquard comb JB2.2, comb GB4 and comb GB5; jacquard comb JB1.1 and jacquard comb JB1.2 are used as the second layer of yarn on the front needle bed yarn, and the second layer of yarn is used on the front needle bed yarn of the fabric. A V-shaped jacquard structure is formed on the surface layer. When the V-shaped jacquard structure is not used, the jacquard needle is offset in the even-numbered rows of the front needle bed, hiding the second layer of yarn between the first layer and the third layer of yarn. When the V-shaped jacquard structure is used, the jacquard needle is offset in both the odd-numbered rows and the even-numbered rows of the front needle bed, forming two loops, both of which are only half exposed and form a V-shaped jacquard structure. Even if it is subjected to the force of sticking and pulling, no extra yarn is pulled out, and no pilling occurs. In this technical solution, the jacquard comb JB1.1 and the jacquard comb JB1.2 are both threaded with white low-elastic light mesh, with a specification of DTY200D / 96F, and the jacquard comb JB2.1 and the jacquard comb JB2.2 are both threaded with nylon semi-bright, with a specification of FDY200D / 48F nylon semi-bright. The raw materials used for the jacquard comb of this type of double jacquard jacquard weaving process are DTY or FDY, both of which are multifilament materials, and the technical problem of monofilament weaving of jacquard comb is not solved.
[0004] Chinese patent publication number CN105951293A relates to a double jacquard mesh fabric, comprising a bottom layer, a middle layer and a surface layer, wherein the bottom layer and the surface layer are connected by yarns on the bottom layer to form the middle layer; warp knitting is performed using an improved double jacquard warp knitting machine with 7 combs, wherein the first comb, the second comb, and the third comb are woven with the weft to form the surface layer, the fourth comb, the fifth comb, and the fifth comb are woven with the weft to form the middle layer, and the fifth comb, the sixth comb, and the seventh comb are woven with the weft to form the bottom layer; wherein the pattern design can be regulated by the combing process.
[0005] The existing double jacquard comb monofilament raw materials are too rigid and difficult to weave, while the middle layer woven with multifilaments has poor three-dimensional sense, poor mesh firmness, and no waterproof performance. Summary of the invention
[0006] In order to solve the above technical defects, the present invention proposes a preparation method of a double jacquard jacquard mesh cloth. The monofilaments obtained by spinning have the characteristics of good flexibility and large elongation. By mixing the jacquard comb, the number of combs is increased to 8, so that the monofilaments can be smoothly woven on the jacquard comb, thereby expanding the applicable scope of the double jacquard comb raw materials, increasing the variety of double jacquard jacquard products, and realizing good waterproof function of the double jacquard jacquard mesh cloth through waterproof shaping and finishing.
[0007] The specific technical solution of the present invention is: a method for preparing a double jacquard mesh cloth, comprising the following steps:
[0008] (1) Preparation of polyester fiber multifilament material: Preferably, polyester multifilament with a multifilament strength of 20-30N, a breaking elongation of 16-30%, and a linear density of 50-500 dtex is selected.
[0009] (2) Preparation of differentiated monofilament materials: Polyethylene naphthalate, copper oxide, and titanium dioxide are added to the polyester chips during the melt extrusion stage for co-spinning, and a differentiated spinneret is used. The cross-sectional shape of the spinneret hole is an oblique hexagon. After spinning, the differentiated monofilament is cooled, stretched, heat-set, and wound to form a finished product.
[0010] Preferably, a twin-screw extruder is established, wherein one screw conveys polyester and the other screw conveys a mixture of polyethylene naphthalate, copper oxide and titanium dioxide, and the temperature is controlled at 100-350°C.
[0011] Preferably, the spinning speed is controlled at 1000-2000 m / min.
[0012] Preferably, the cooling method is natural cooling, and after two stretching steps, the yarn is heat-set at a fixed tension and speed, and the heat-setting temperature is controlled at 180-250° C., thereby improving the uniformity of the monofilament yarn.
[0013] (3) Warping: According to the width requirements of the weaving process, the yarn is warped by segmented warping.
[0014] Preferably, the warping is divided into 2-8 sections, and the number of warping strands is 200-600.
[0015] (4) Weaving: Add one comb bar to the conventional 7-comb double needle bed, mix the jacquard comb position, and form a double jacquard double needle bed 8-comb weaving process. The top layer has 3 comb bars, the middle layer has 2 comb bars, and the bottom layer has 3 comb bars, and the double jacquard jacquard mesh fabric is formed.
[0016] (5) Post-finishing: The double jacquard mesh fabric is waterproofed and shaped to obtain a finished product.
[0017] Preferably, in the above step (2), the polyester chips content in the blended yarn is 71-89wt%, the polyethylene naphthalate content is 8-20wt%, the copper oxide content is 1-4wt%, and the titanium dioxide content is 2-5wt%.
[0018] Preferably, in the above step (2), the cross-sectional shape of the spinneret hole of the differentiated spinneret is an oblique hexagon, and the oblique hexagon has three pairs of parallel sides, namely short, medium and long sides.
[0019] Preferably, in the above step (2), natural cooling is used for subsequent cooling after spinning, the temperature is controlled at 20-50°C, the drawing temperature is 120-150°C, and the heat setting temperature is 180-230°C.
[0020] Preferably, in the above step (4), the 8 combs of the double jacquard double needle bed are composed of 4 half-combed jacquard combs and 4 conventional combs. The 4 half-combed jacquard combs are not arranged in parallel, but are alternately arranged with the 4 conventional combs through the mixing of program circuits, that is, the 8 combs are: half-combed jacquard comb, conventional comb, half-combed jacquard comb, conventional comb, half-combed jacquard comb, conventional comb, half-combed jacquard comb, conventional comb, half-combed jacquard comb, conventional comb.
[0021] Preferably, in the above step (5), a pressure roller and a water tank are installed before the setting machine, and the double jacquard mesh cloth enters the water tank after passing through the setting mechanism cloth roll, and distilled water is injected into the water tank to a height of one-half to three-quarters, and the water temperature range is controlled at 25-100°C. 3-15wt% waterproofing agent is added to the water tank, and the soaking time is 30-60S. Then, the more liquid is squeezed out through the pressure roller, and then enters the setting needle clothing and the oven, and the setting overfeed is controlled at 5-10%.
[0022] Preferably, the waterproofing auxiliary agent contains 33-77 wt % of paraffin wax, 10-30 wt % of oil, 10-30 wt % of silicone, and 3-7 wt % of methacrylic resin.
[0023] Compared with the prior art, the beneficial effects of the present invention are: on the one hand, by improving the spinning process scheme, the flexibility and extensibility of the monofilament are enhanced, and the unevenness of the monofilament is reduced; on the other hand, by increasing the double jacquard warp knitting machine comb, mixing the jacquard comb and the conventional comb, the monofilament can be smoothly woven on the jacquard comb, the product has good toughness and flexible pattern changes; the double jacquard jacquard mesh has good air permeability, and the waterproof shaping and finishing give the product a waterproof function. BRIEF DESCRIPTION OF THE DRAWINGS
[0024] Figure 1 It is the cross-sectional shape of the spinneret hole, where 1 is the short side, 2 is the middle side, and 3 is the long side. DETAILED DESCRIPTION
[0025] The present invention will be further described below in conjunction with the embodiments.
[0026] Example 1
[0027] A method for preparing a double jacquard mesh fabric comprises the following steps:
[0028] (1) Preparation of polyester fiber multifilament material: Preferably, polyester multifilament with a multifilament strength of 20-30N, a breaking elongation of 16-30%, and a linear density of 50-500 dtex is selected.
[0029] (2) Preparation of differentiated monofilament materials: Polyethylene naphthalate, copper oxide, and titanium dioxide are added to the polyester chips during the melt extrusion stage for co-spinning, and a differentiated spinneret is used. The cross-sectional shape of the spinneret hole is an oblique hexagon. After spinning, the differentiated monofilament is cooled, stretched, heat-set, and wound to form a finished product.
[0030] A twin-screw extruder was established, in which one screw conveyed polyester and the other screw conveyed a mixture of polyethylene naphthalate, copper oxide and titanium dioxide, and the temperature was controlled at 100-350°C.
[0031] The spinning speed is controlled at 1000-2000m / min.
[0032] The cooling method is natural cooling. After two drafting steps, the yarn is heat-set at a fixed tension and speed. The heat-setting temperature is controlled at 180-250°C, which improves the uniformity of the monofilament.
[0033] (3) Warping: According to the width requirements of the weaving process, the yarn is warped by segmented warping, which is divided into 2-8 segments and the number of warped yarns is 200-600.
[0034] (4) Weaving: Add one comb bar to the conventional 7-comb double needle bed, mix the jacquard comb position, and form a double jacquard double needle bed 8-comb weaving process. The top layer has 3 comb bars, the middle layer has 2 comb bars, and the bottom layer has 3 comb bars, and the double jacquard jacquard mesh fabric is formed.
[0035] (5) Post-finishing: The double jacquard mesh fabric is waterproofed and shaped to obtain a finished product.
[0036] In the above step (2), the content of polyester chips in the blended yarn is 89wt%, the content of polyethylene naphthalate is 8wt%, the content of copper oxide is 1wt%, and the content of titanium dioxide is 2wt%.
[0037] In the above step (2), the cross-sectional shape of the spinneret hole of the differential spinneret is an oblique hexagon, and the oblique hexagon has three pairs of parallel sides: short, medium and long.
[0038] In the above step (2), the subsequent cooling after spinning is natural cooling, the temperature is controlled at 20-50°C, the drawing temperature is 120-150°C, and the heat setting temperature is 180-230°C.
[0039] In the above step (4), the 8 combs of the double jacquard double needle bed are composed of 4 half-combed jacquard combs and 4 conventional combs. The 4 half-combed jacquard combs are not arranged in parallel, but are alternately arranged with the 4 conventional combs through the mixing of program circuits, that is, the 8 combs are: half-combed jacquard comb, conventional comb, half-combed jacquard comb, conventional comb, half-combed jacquard comb, conventional comb, half-combed jacquard comb, conventional comb, half-combed jacquard comb, conventional comb,
[0040] In the above step (5), a pressure roller and a water tank are installed in front of the setting machine. The double jacquard mesh cloth enters the water tank after passing through the setting mechanism cloth roll. Distilled water is injected into the water tank to a height of one-half to three-quarters. The water temperature range is controlled at 25-100°C. 3wt% waterproofing agent is added to the water tank. The soaking time is 60S. Then, the more liquid is squeezed out through the pressure roller, and then enters the setting needle clothing and the oven. The setting overfeed is controlled at 5-10%.
[0041] The waterproofing auxiliary agent contains 77 wt% of paraffin, 10 wt% of grease, 10 wt% of organic silicon and 3 wt% of methacrylic resin.
[0042] Example 2
[0043] A method for preparing a double jacquard mesh fabric comprises the following steps:
[0044] (1) Preparation of polyester fiber multifilament material: Preferably, polyester multifilament with a multifilament strength of 20-30N, a breaking elongation of 16-30%, and a linear density of 50-500 dtex is selected.
[0045] (2) Preparation of differentiated monofilament materials: Polyethylene naphthalate, copper oxide, and titanium dioxide are added to the polyester chips during the melt extrusion stage for co-spinning, and a differentiated spinneret is used. The cross-sectional shape of the spinneret hole is an oblique hexagon. After spinning, the differentiated monofilament is cooled, stretched, heat-set, and wound to form a finished product.
[0046] A twin-screw extruder was established, in which one screw conveyed polyester and the other screw conveyed a mixture of polyethylene naphthalate, copper oxide and titanium dioxide, and the temperature was controlled at 100-350°C.
[0047] The spinning speed is controlled at 1000-2000m / min.
[0048] The cooling method is natural cooling. After two drafting steps, the yarn is heat-set at a fixed tension and speed. The heat-setting temperature is controlled at 180-250°C, which improves the uniformity of the monofilament.
[0049] (3) Warping: According to the width requirements of the weaving process, the yarn is warped by segmented warping, which is divided into 2-8 segments and the number of warped yarns is 200-600.
[0050] (4) Weaving: Add one comb bar to the conventional 7-comb double needle bed, mix the jacquard comb position, and form a double jacquard double needle bed 8-comb weaving process. The top layer has 3 comb bars, the middle layer has 2 comb bars, and the bottom layer has 3 comb bars, and the double jacquard jacquard mesh fabric is formed.
[0051] (5) Post-finishing: The double jacquard mesh fabric is waterproofed and shaped to obtain a finished product.
[0052] In the above step (2), the content of polyester chips in the blended yarn is 71wt%, the content of polyethylene naphthalate is 20wt%, the content of copper oxide is 4wt%, and the content of titanium dioxide is 5wt%.
[0053] In the above step (2), the cross-sectional shape of the spinneret hole of the differential spinneret is an oblique hexagon, and the oblique hexagon has three pairs of parallel sides: short, medium and long.
[0054] In the above step (2), the subsequent cooling after spinning is natural cooling, the temperature is controlled at 20-50°C, the drawing temperature is 120-150°C, and the heat setting temperature is 180-230°C.
[0055] In the above step (4), the 8 combs of the double jacquard double needle bed are composed of 4 half-combed jacquard combs and 4 conventional combs. The 4 half-combed jacquard combs are not arranged in parallel, but are alternately arranged with the 4 conventional combs through the mixing of program circuits, that is, the 8 combs are: half-combed jacquard comb, conventional comb, half-combed jacquard comb, conventional comb, half-combed jacquard comb, conventional comb, half-combed jacquard comb, conventional comb, half-combed jacquard comb, conventional comb,
[0056] In the above step (5), a pressure roller and a water tank are installed in front of the setting machine. The double jacquard mesh cloth enters the water tank after passing through the setting mechanism cloth roll. Distilled water is injected into the water tank to a height of one-half to three-quarters. The water temperature range is controlled at 25-100°C. 15wt% waterproofing agent is added to the water tank. The soaking time is 30S. Then, the attached more liquid is squeezed out through the pressure roller, and then enters the setting needle clothing and the oven. The setting overfeed is controlled at 5-10%.
[0057] The waterproofing auxiliary agent contains 33 wt% of paraffin, 30 wt% of oil, 30 wt% of organic silicon and 7 wt% of methacrylic resin.
[0058] Example 3
[0059] A method for preparing a double jacquard mesh fabric comprises the following steps:
[0060] (1) Preparation of polyester fiber multifilament material: Preferably, polyester multifilament with a multifilament strength of 20-30N, a breaking elongation of 16-30%, and a linear density of 50-500 dtex is selected.
[0061] (2) Preparation of differentiated monofilament materials: Polyethylene naphthalate, copper oxide, and titanium dioxide are added to the polyester chips during the melt extrusion stage for co-spinning, and a differentiated spinneret is used. The cross-sectional shape of the spinneret hole is an oblique hexagon. After spinning, the differentiated monofilament is cooled, stretched, heat-set, and wound to form a finished product.
[0062] A twin-screw extruder was established, in which one screw conveyed polyester and the other screw conveyed a mixture of polyethylene naphthalate, copper oxide and titanium dioxide, and the temperature was controlled at 100-350°C.
[0063] The spinning speed is controlled at 1000-2000m / min.
[0064] The cooling method is natural cooling. After two drafting steps, the yarn is heat-set at a fixed tension and speed. The heat-setting temperature is controlled at 180-250°C, which improves the uniformity of the monofilament.
[0065] (3) Warping: According to the width requirements of the weaving process, the yarn is warped by segmented warping, which is divided into 2-8 segments and the number of warped yarns is 200-600.
[0066] (4) Weaving: Add one comb bar to the conventional 7-comb double needle bed, mix the jacquard comb position, and form a double jacquard double needle bed 8-comb weaving process. The top layer has 3 comb bars, the middle layer has 2 comb bars, and the bottom layer has 3 comb bars, and the double jacquard jacquard mesh fabric is formed.
[0067] (5) Post-finishing: The double jacquard mesh fabric is waterproofed and shaped to obtain a finished product.
[0068] In the above step (2), the content of polyester chips in the blended yarn is 80wt%, the content of polyethylene naphthalate is 15wt%, the content of copper oxide is 2wt%, and the content of titanium dioxide is 3wt%.
[0069] In the above step (2), the cross-sectional shape of the spinneret hole of the differential spinneret is an oblique hexagon, and the oblique hexagon has three pairs of parallel sides: short, medium and long.
[0070] In the above step (2), the subsequent cooling after spinning is natural cooling, the temperature is controlled at 20-50°C, the drawing temperature is 120-150°C, and the heat setting temperature is 180-230°C.
[0071] In the above step (4), the 8 combs of the double jacquard double needle bed are composed of 4 half-combed jacquard combs and 4 conventional combs. The 4 half-combed jacquard combs are not arranged in parallel, but are alternately arranged with the 4 conventional combs through the mixing of program circuits, that is, the 8 combs are: half-combed jacquard comb, conventional comb, half-combed jacquard comb, conventional comb, half-combed jacquard comb, conventional comb, half-combed jacquard comb, conventional comb, half-combed jacquard comb, conventional comb,
[0072] In the above step (5), a pressure roller and a water tank are installed in front of the setting machine. The double jacquard mesh cloth enters the water tank after passing through the setting mechanism cloth roll. Distilled water is injected into the water tank to a height of one-half to three-quarters. The water temperature range is controlled at 25-100°C. 5wt% waterproofing agent is added to the water tank. The soaking time is 45S. Then, the more liquid is squeezed out through the pressure roller, and then enters the setting needle cloth and the oven. The setting overfeed is controlled at 5-10%.
[0073] The waterproofing auxiliary agent contains 60 wt% of paraffin, 15 wt% of grease, 20 wt% of organic silicon and 5 wt% of methacrylic resin.
[0074] The above description is only a preferred embodiment of the present invention and does not limit the present invention in any way. Any simple modification, change and equivalent transformation made to the above embodiment based on the technical essence of the present invention still falls within the protection scope of the technical solution of the present invention.
Claims
1. A method for preparing a double jacquard mesh, characterized in that The following steps are involved: (1) Preparation of polyester fiber multifilament materials; (2) Preparation of differentiated monofilament materials: adding polyethylene naphthalate, copper oxide, and titanium dioxide to the polyester chips during melt extrusion and spinning, using a differentiated spinneret, the cross-sectional shape of the spinneret hole is an oblique hexagon, and cooling, drawing, heat setting, and winding are performed after spinning to form differentiated monofilament products; (3) Warping: According to the width requirements of the weaving process, the yarn is warped by segmented warping; (4) Weaving: Add one comb bar to the conventional 7-comb double needle bed, mix the jacquard comb position, and form a double jacquard double needle bed 8-comb weaving process. The top layer has 3 comb bars, the middle layer has 2 comb bars, and the bottom layer has 3 comb bars, and the double jacquard jacquard mesh fabric is formed. (5) Post-finishing: The double jacquard mesh fabric is waterproofed and shaped to obtain a finished product.
2. The method for preparing a double jacquard mesh according to claim 1, characterized in that: The blended yarn in step (2) contains 71-89 wt% polyester chips, 8-20 wt% polyethylene naphthalate, 1-4 wt% copper oxide and 2-5 wt% titanium dioxide.
3. The method for preparing a double jacquard mesh according to claim 1, characterized in that: The oblique hexagon in step (2) has three pairs of parallel sides: short, medium and long.
4. The method for preparing a double jacquard mesh according to claim 1, characterized in that: The subsequent cooling after spinning in the step (2) is natural cooling, the temperature is controlled at 20-50°C, the drawing temperature is 120-150°C, and the heat setting temperature is 180-230°C.
5. The method for preparing a double jacquard mesh according to claim 1, characterized in that: The eight combs in step (4) are composed of four half-combed jacquard combs and four conventional combs. The four half-combed jacquard combs are not arranged in parallel, but are arranged alternately with the four conventional combs through mixed program circuits, that is, the eight combs are: half-combed jacquard comb, conventional comb, half-combed jacquard comb, conventional comb, half-combed jacquard comb, conventional comb, half-combed jacquard comb, conventional comb, half-combed jacquard comb, conventional comb.
6. The method for preparing a double jacquard mesh according to claim 1, characterized in that: In the waterproof shaping finishing in step (5), a pressure roller and a water tank are installed in front of the shaping machine. The double jacquard mesh cloth enters the water tank after passing through the shaping mechanism cloth roll. Distilled water is injected into the water tank to a height of one-half to three-quarters. The water temperature range is controlled at 25-100° C. 3-15wt% of waterproofing auxiliary agent is added to the water tank. The soaking time is 30-60S. Then, more liquid is squeezed out through the pressure roller, and then enters the shaping needle clothing and the drying oven. The shaping overfeed is controlled at 5-10%.
7. The method for preparing a double jacquard mesh according to claim 6, characterized in that: The waterproofing auxiliary agent contains 33-77 wt % of paraffin wax, 10-30 wt % of oil, 10-30 wt % of organic silicon, and 3-7 wt % of methacrylic resin.