阅读说明：本技术 一种光变贾卡网布的制备方法 (Preparation method of optically variable jacquard mesh ) 是由 石建良 陈宝惠 林翔俤 林友兴 陈彩霞 陈志鹏 于 2019-04-25 设计创作，主要内容包括：本发明涉及纺织材料领域,公开了一种光变贾卡网布的制备方法,包括以下步骤：(1)FDY光变涤纶复丝的制备：在FDY涤纶纺丝过程中添加0.3%-10%质量占比的光变粉体；(2)TPU包覆FDY光变涤纶复丝形成TPU光变涤纶皮芯结构单纱的制备；(3)整经：按照织造工艺幅宽要求,采用分条整经方式对TPU光变涤纶皮芯结构单纱进行整经；(4)网布经编制备：采用贾卡双针床6梳编织工艺,面层3把梳栉、中间1把梳栉、底层2把梳栉组合编织,形成光变贾卡网布坯布；(5)后整理：对光变贾卡网布坯布进行定型整理,得到成品。产品经多次洗涤或3个月以上使用,仍能保持较好的光变效果,持久性强。(The invention relates to the field of textile materials, and discloses a preparation method of an optically variable jacquard mesh, which comprises the following steps: (1) preparing FDY optically variable polyester multifilament: adding 0.3-10% of optically variable powder in the FDY polyester spinning process; (2) coating FDY (fully drawn yarn) optically variable polyester multifilament by TPU to form TPU optically variable polyester sheath-core structure single yarn; (3) warping: warping the TPU optically variable polyester skin-core structure single yarn in a sectional warping mode according to the width requirement of the weaving process; (4) warp knitting preparation of mesh cloth: by adopting a jacquard double-needle bed 6 bar weaving process, the surface layer 3 guide bars, the middle 1 guide bar and the bottom layer 2 guide bars are combined and woven to form an optically variable jacquard mesh fabric grey cloth; (5) and (3) after finishing: and (5) shaping and finishing the optically variable jacquard cloth blank to obtain a finished product. The product can still keep better light-variable effect after being washed for many times or used for more than 3 months, and has strong durability.)

1. A preparation method of an optically variable jacquard mesh is characterized by comprising the following steps:

(1) preparing FDY optically variable polyester multifilament: adding 0.3-10% of optically variable powder in the FDY polyester spinning process;

(2) preparing TPU (thermoplastic polyurethane) coated FDY (fully drawn yarn) optically variable polyester multifilament yarns into TPU optically variable polyester sheath-core structure single yarns: the outer layer of the FDY optically variable polyester multifilament is coated with a TPU hot melt adhesive film, the optically variable polyester multifilament is completely wrapped by the hot melt adhesive film in a circular shape, and the linear density of the single yarn of the integral TPU optically variable polyester sheath-core structure is 150-1200D;

(3) warping: warping the TPU optically variable polyester skin-core structure single yarn in a sectional warping mode according to the width requirement of the weaving process;

(4) warp knitting preparation of mesh cloth: by adopting a jacquard double-needle bed 6 bar weaving process, the surface layer 3 guide bars, the middle 1 guide bar and the bottom layer 2 guide bars are combined and woven to form an optically variable jacquard mesh fabric grey cloth;

(5) And (3) after finishing: and (5) shaping and finishing the optically variable jacquard cloth blank to obtain a finished product.

2. The optically variable powder according to claim 1, wherein the optically variable powder comprises 0.1 to 10wt% of chlorophyll, 0.1 to 10wt% of carotenoid, 0.1 to 10wt% of anthocyanin, 50 to 95wt% of optically variable OP powder, 1 to 10wt% of terephthaloyl chloride, 1 to 10wt% of diethylenetriamine, 1 to 10wt% of photostabilizer, and 1 to 10wt% of antioxidant.

3. The TPU optically variable polyester sheath-core structure single yarn as claimed in claim 1, wherein the TPU hot melt adhesive film is uniformly coated on the outer layer of the FDY optically variable polyester multifilament, and the temperature in the coating process is not more than 230 ℃.

4. The warping machine according to claim 1, wherein the number of individual yarn tensions during the warping process is controlled to be 1-15N depending on the yarn thickness and the extensibility.

5. The knitting process of claim 1, wherein the front 2 guide bars of the guide bars are oppositely padded by the aid of 2X2 threading mode in the face layer 3, and the rear 1 guide bar is padded by the aid of 3X3 threading mode and the front two guide bars in a matched mode to form the optically variable jacquard mesh cloth gray fabric with crossed rhombic meshes.

6. A sizing finish according to claim 1, characterised in that the sizing temperature is 120-.

7. The optically variable jacquard mesh cloth according to claim 5, wherein the TPU optically variable polyester sheath-core structure single yarn forms a diamond-shaped compact edge with a width of 1-10mm and a raised thickness plane of 0.1-2 mm.

8. The optically variable jacquard mesh cloth according to claim 5, wherein the polyester multifilament is interwoven to form circular meshes, the number of the meshes is 5-20, and the circular area is 0.1-100mm²。

9. The TPU optically variable polyester sheath-core structured single yarn as claimed in claim 1, wherein the FDY optically variable polyester multifilament is 10-80% by mass, the TPU is white transparent, and the TPU is 20-90% by mass.

Technical Field

The invention relates to the field of textile materials, in particular to a preparation method of an optically variable jacquard mesh.

Background

Jacquard mesh is a kind of warp knitting jacquard mesh, thick tissues, thin tissues, mesh tissues and the mutual combination of the thick tissues, the thin tissues and the mesh tissues are usually formed on the fabric by utilizing the offset of a jacquard needle, the jacquard mesh has richer pattern changes, a formed vamp knitted by utilizing the jacquard warp knitting technology is the mainstream of the market sports and leisure vamp, the pattern and the color of the product can be knitted in multiple layers, the jacquard mesh is widely popular in the market, and the trend of function superposition and deep development on the basis of the jacquard mesh is realized.

Chinese patent publication No. CN108589013A relates to a thick needle color-developing jacquard mesh fabric, which comprises a mesh fabric body integrally woven by a double-needle bed double-jacquard warp knitting machine, wherein the mesh fabric body is provided with a surface layer, a bottom layer and a connecting yarn for connecting the surface layer and the bottom layer, and jacquard patterns are formed on the surface layer and/or the bottom layer, and the jacquard patterns are integrally woven by 500D to 1500D jacquard yarns. The jacquard patterns are 500D-1500D jacquard yarns, the yarns are designed to be thickened, the patterns are clearer, the shape retention is good, the wear resistance is good, meanwhile, the fabric has the advantages of being rough and has better stereoscopic impression, and the fabric is suitable for being used in vamps. The method for manufacturing the coarse needle color-developing jacquard mesh cloth adopts a double-needle bed double-jacquard warp knitting machine to integrally knit the surface layer, the bottom layer and the jacquard patterns, has the advantage of high processing efficiency, and ensures the integral stability of the fabric by connecting the surface layer and the bottom layer into a whole through connecting yarns.

Chinese patent publication No. CN106149429A provides a photochromic fabric and a preparation process thereof, wherein the preparation process comprises the steps of thermoprinting a photochromic powder on a bidirectional tensile polypropylene film by a concave-convex thermoprinting process, and then transferring a pattern part containing the photochromic powder onto a base cloth by a thermal transfer process to form the photochromic fabric, the fabric can absorb ultraviolet rays under the illumination condition to change color, thereby achieving the effect of changing color and preventing sunburn, and can form different photochromic patterns.

Disclosure of Invention

The optically variable jacquard mesh prepared by the method can still keep the optically variable effect of more than 80 percent of brightness after being tried out by the optically variable effect of more than 3 months or more than 5000 times, and has the characteristic of rich variation of concave-convex gradation of patterns.

The specific technical scheme of the invention is as follows: a preparation method of an optically variable jacquard mesh comprises the following steps:

(1) preparing FDY optically variable polyester multifilament: adding 0.3-10% of optically variable powder in the FDY polyester spinning process;

preferably, the optically variable powder is added with liquid at the spinning drafting and winding stages, and then is cooled to be adhered with the polyester multifilament.

(2) Preparing TPU (thermoplastic polyurethane) coated FDY (fully drawn yarn) optically variable polyester multifilament yarns into TPU optically variable polyester sheath-core structure single yarns: wrapping the outer layer of the FDY optically variable polyester multifilament with a TPU hot melt adhesive film, wherein the optically variable polyester multifilament is completely wrapped by the hot melt adhesive film in a circular shape, and the linear density of the single yarn of the integral TPU optically variable polyester sheath-core structure is 150-1200D;

preferably, the density of the FDY optically variable polyester multifilament yarns is 100-200D, and the number of the multifilaments is 20-50.

(3) Warping: warping the TPU optically variable polyester skin-core structure single yarn in a sectional warping mode according to the width requirement of the weaving process;

preferably, the number of the sectional warping is 12-100.

(4) Warp knitting preparation of mesh cloth: by adopting a jacquard double-needle bed 6 bar weaving process, the surface layer 3 guide bars, the middle 1 guide bar and the bottom layer 2 guide bars are combined and woven to form an optically variable jacquard mesh fabric grey cloth;

preferably, a guide bar in the middle 1 is arranged on the mesh cloth spacing layer and moves to and from the left needle bed and the right needle bed in an X shape to form a stable supporting layer;

preferably, the thickness of the optically variable jacquard fabric is 1-6 mm.

(5) And (3) after finishing: and (5) shaping and finishing the optically variable jacquard cloth blank to obtain a finished product.

Preferably, in the step (1), the content of chlorophyll, carotenoid, anthocyanin and photo-variable OP powder in the photo-variable powder is 0.1-10wt%, 50-95wt%, 1-10wt% and 1-10wt% respectively.

Preferably, in the step (2), the TPU hot melt adhesive film is uniformly coated on the outer layer of the FDY optically variable polyester multifilament, and the temperature in the coating process is not more than 230 ℃.

Preferably, in the step (3), the warping process is controlled to be 1 to 15N depending on the yarn thickness and the drawing single yarn tension.

Preferably, in the step (4), the front 2 guide bars of the guide bars are reversely padded with yarns in a 2X2 threading manner, and the rear 1 guide bar is padded with the front two guide bars in a 3X3 threading manner to form the crossed rhombic mesh optically variable jacquard fabric blank.

Preferably, in the step (5), the setting temperature is 120-180 ℃ and the time is 15-60S.

Preferably, the TPU photochromic terylene sheath-core structure single yarn forms a rhombic compact edge, the width is 1-10mm, and the thickness plane is raised by 0.1-2 mm.

Preferably, the polyester multifilament is interwoven to form circular meshes, the number of the meshes is 5-20, and the circular area is 0.1-100mm²。

Preferably, the FDY optically variable polyester multifilament accounts for 10-80% by mass, the TPU is white and transparent, and the TPU accounts for 20-90% by mass.

Compared with the prior art, the invention has the beneficial effects that: under the irradiation of sunlight containing ultraviolet rays, the light-variable jacquard cloth can gradually show patterns at the position where the TPU light-variable terylene sheath-core structure single yarn covers the surface layer; when the screen cloth returns to the room, the screen cloth is prevented from being irradiated by ultraviolet rays, and the patterns on the screen cloth gradually disappear. The pattern has a three-dimensional effect and is rich in layering due to the raised texture of the diamond jacquard weave. The product can still keep better light-variable effect after being washed for many times or used for more than 3 months, and has strong durability.

Detailed Description

The present invention will be further described with reference to the following examples.