Warp-knitted vamp fabric with novel light-variable material

Abstract

The utility model relates to a warp-knitted vamp fabric with a novel light-variable material, which mainly solves the problem of poor durability of the warp-knitted vamp fabric with the light-variable material in the prior art, and comprises a fabric body, the transverse density wpc of the fabric body is 10, the longitudinal density cpc of the fabric body is 14, and the traction density cpc of the fabric body is 13.5. The fabric body comprises dacron optical variable yarns, first dacron yarns and second dacron yarns which are woven in a staggered mode, microcapsules are wrapped in the dacron optical variable yarns, and each microcapsule comprises a shell with a containing cavity and optical variable liquid filled in the containing cavity of the shell.

Description

TECHNICAL FIELD

[0001] The utility model relates to a warp knitting shoe upper fabric with novel light change material. BACKGROUND

[0002] Light change material, also called photosensitive color change material or photochromic material, refers to a material that changes color reversibly after being excited by a specific light source. After being irradiated by sunlight / ultraviolet light, it can absorb sunlight / ultraviolet light energy, change the molecular structure, change color due to the change of absorption wavelength, and restore the original molecular structure when the sunlight / ultraviolet light energy is lost.

[0003] For example, Chinese patent application No. 201620144185.1, entitled "Reversible photochromic waterproof fabric structure", includes a fabric substrate, a reversible photochromic layer made of ultraviolet light sensitive color change material is coated on the outer surface of the fabric substrate by immersion process, and a waterproof layer made of hydrophobic material is arranged on the surface of the reversible photochromic layer. By arranging the reversible photochromic layer made of ultraviolet light sensitive color change material on the surface of the fabric substrate, when the clothes are irradiated by light, the color of the clothes will change according to the intensity of ultraviolet light in the light, making the clothes more colorful.

[0004] However, the reversible photochromic layer made of ultraviolet light sensitive color change material is coated on the outer surface of the fabric substrate by immersion process, and the fabric substrate with the reversible photochromic layer coated by this immersion process is used for shoe upper. Due to frequent bending and local friction of the shoe upper, the reversible photochromic layer is easy to fall off, and the light change efficiency is low and the durability is poor. Utility model content

[0005] Therefore, in view of the above problems, the utility model provides a warp knitting shoe upper fabric with novel light change material, which mainly solves the problem of poor durability of the warp knitting shoe upper fabric with light change material in the prior art.

[0006] To achieve the above purpose, the utility model adopts the following technical scheme:

[0007] A warp knitting shoe upper fabric with novel light change material, comprising a fabric body, the horizontal density wpc of the fabric body is 10, the longitudinal density cpc of the fabric body is 14, the draw density cpc of the fabric body is 13.5, the fabric body comprises staggered woven polyester light change silk, first polyester silk and second polyester silk, the polyester light change silk is wrapped with microcapsules, and the microcapsules comprise a shell with a cavity and a light change liquid filled in the cavity of the shell.

[0008] Further, the light change liquid is a spiropyran derivative.

[0009] Further, the polyester photo-variable yarn comprises a first yarn and a second yarn formed by rubbing the polyester fiber, the first yarn and the second yarn are spirally wound, and the microcapsules are distributed in the first yarn, the second yarn and between the first yarn and the second yarn.

[0010] Further, the fabric body has a grammage of 227g / m 2 .

[0011] By adopting the foregoing technical scheme, the warp-knitted shoe upper fabric with the novel photo-variable material has the following beneficial effects: the fabric body knitted by the polyester photo-variable yarn, the first polyester yarn and the second polyester yarn is transparent and has high strength, so that the shoe fabric is not only light, thin, breathable, wear-resistant and fold-resistant, but also has the microcapsules of the photo-variable liquid wrapped in the polyester photo-variable yarn, which can avoid friction with the outside, reduce the falling-off problem of the microcapsules, maintain the photo-variable effect of the fabric for a long time, improve the durability, and when the photo-variable liquid is not irradiated by sunlight or ultraviolet light, the photo-variable liquid presents a visual effect of appearing and disappearing through the transparent polyester yarn, and after being irradiated by sunlight or ultraviolet light, the photo-variable liquid produces color change, and different colors are presented on the surface through the transparent polyester yarn, so that the fabric has two color styles, and the appearance is improved. BRIEF DESCRIPTION OF DRAWINGS

[0012] Figure 1 is a sectional view of the embodiment of the utility model;

[0013] Figure 2 is a structural schematic view of the polyester photo-variable yarn in the embodiment of the utility model;

[0014] Figure 3 is a sectional view of the microcapsule in the embodiment of the utility model. DETAILED DESCRIPTION

[0015] The utility model will be further explained in combination with the drawings and specific embodiments.

[0016] The embodiment of the utility model is:

[0017] Reference Figure 1 、 Figure 2 With Figure 3 As shown in the figure, a warp-knitted shoe upper fabric with a novel photo-variable material comprises a fabric body 1, the horizontal density wpc of the fabric body 1 is 10, the longitudinal density cpc of the fabric body 1 is 14, the draft density cpc of the fabric body 1 is 13.5, and the grammage of the fabric body 1 is 227g / m 2The fabric body 1 includes staggered woven polyester photo-variable silk 11, first polyester silk 12 and second polyester silk 13, the polyester photo-variable silk 11 is wrapped with microcapsules 2, the microcapsules 2 include a shell 21 with a cavity and a photo-variable liquid 22 filled in the cavity of the shell 21, the photo-variable liquid 22 is a spiropyran derivative, the polyester photo-variable silk 11 includes first silk thread 111 and second silk thread 112 formed by rubbing and twisting polyester fibers, the first silk thread 111 and the second silk thread 112 are spirally wound, and the microcapsules 2 are distributed in the first silk thread 111, the second silk thread 112 and between the first silk thread 111 and the second silk thread 112.

[0018] The warp-knitted shoe upper fabric with novel photo-variable material has the fabric body 1 knitted by the polyester photo-variable silk 11, the first polyester silk 12 and the second polyester silk 13, which presents a transparent state and has high strength, so that the shoe fabric is not only light, thin, breathable, wear-resistant and fold-resistant, but also has the microcapsules 2 with the photo-variable liquid 22 wrapped in the polyester photo-variable silk 11, which can avoid friction with the outside, reduce the shedding problem of the microcapsules 2, maintain the photo-variable effect of the fabric for a long time, improve the durability, and when there is no sunlight / ultraviolet radiation, the photo-variable liquid 22 presents a visual effect of appearing and disappearing through the transparent polyester silk, and after the sunlight / ultraviolet radiation, the photo-variable liquid 22 produces color change, presents different colors on the surface through the transparent polyester silk, realizes a fabric with two color styles, and improves the aesthetic appearance.

[0019] The spiropyran derivative is disclosed in the patent application file of Chinese Patent Application No. 202110154527.X.

[0020] The preparation process of the fabric body 1 is that the microcapsules 2 are prepared first, then the polyester fibers are attached with the microcapsules 2 through dyeing and finishing process, the photochromic material is isolated from the external environment, the oxidation resistance of the photochromic material is improved, the service life of the fiber is prolonged, the fiber itself has color, the first silk thread 111 and the second silk thread 112 are rubbed and formed, the first silk thread 111 and the second silk thread 112 are spirally wound to form the polyester photo-variable silk 11, and finally the RDPJ7 / 1 single-jack bar warp knitting machine is used to knit the fabric body 1.

[0021] Specific knitting process:

[0022] Raw material composition:

[0023] A: polyester photo-variable silk 11;

[0024] B: first polyester silk 12;

[0025] C: second polyester silk 13;

[0026] Process organization:

[0027] GB1: (0-0 / 1-1) x 2 / 0-0 / (5-5 / 4-4) x 2 / 5-5 / / 1A, 3*;

[0028] GB2: (5-5 / 4-4) x 2 / 5-5 / (0-0 / 1-1) x 2 / 0-0 / / 1A, 3*;

[0029] GB3: 2-3-3-3 / 1-0-0-0 / / 1B;

[0030] JB4.1: 1-1-1-0 / 1-1-0-1 / / 1C;

[0031] JB4.2: 1-1-1-0 / 1-1-0-1 / / 1C;

[0032] GB5: 1-0-0-0 / 2-3-3-3 / / 1B;

[0033] ("*" indicates empty)

[0034] Warping amount:

[0035] GB1: 1.7mm / row;

[0036] GB2: 1.7mm / row;

[0037] GB3: 4.6mm / row;

[0038] JB4.1: 2.7mm / row two large three small;

[0039] JB4.2: 2.7mm / row two large three small;

[0040] GB5: 4.8mm / row.

[0041] The warp shoe upper fabric of the novel photo-variable material is tested by the cooperation of Fujian Fiber Testing Center, and the fabric has fully met the requirements of Fujian Fiber Testing Center and customers. The details of the specific indicators are as follows:

[0042]

[0043]

[0044] As can be seen from the table, the phenol yellow change and light fastness of the fabric are above 4 levels, indicating that the fabric has good storage and light resistance performance; the fabric pH is 6.1, and formaldehyde is not detected, meeting the fabric wear performance; the fabric bursting strength reaches 1.35 x 10 3The kPa and the high tear strength indicate that the fabric has very good strength; the fabric wear resistance is up to level 4, and the normal temperature and low temperature folding resistance is intact without damage, indicating that the fabric has very good wear resistance and folding resistance. All the detection indexes of the fabric meet the requirements of shoe materials and uppers, so the fabric quality meets the predetermined design requirements of the project.

[0045] In addition, the terms "first", "second", "third", etc. are used only for descriptive purposes and should not be construed as indicating or implying relative importance or an indicated number of technical features. Therefore, the features defined as "first", "second", etc. can explicitly or implicitly include one or more of the features. In the description of the present application, the meaning of "a plurality of" is two or more, unless otherwise explicitly specified and limited.

[0046] In the present application, unless otherwise explicitly specified and limited, the terms "mounting", "connection", "connecting", "fixing" and the like should be understood in a broad sense, for example, can be fixed connection, can also be detachable connection, or integral; can be directly connected, or indirectly connected through an intermediate medium; can be the internal communication of two elements or the interaction relationship between two elements. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0047] In the present application, unless otherwise explicitly specified and limited, the first feature is "on" or "under" the second feature, which can be direct contact between the first and second features, or indirect contact between the first and second features through an intermediate medium. Moreover, the first feature "above", "over" and "on" the second feature can be directly above or obliquely above the first feature, or only indicate that the horizontal height of the first feature is higher than that of the second feature. The first feature "below", "under" and "under" the second feature can be directly below or obliquely below the first feature, or only indicate that the horizontal height of the first feature is less than that of the second feature.

[0048] Although the present application is specifically shown and described in connection with preferred embodiments, those skilled in the art should understand that various changes in form and details can be made to the present application without departing from the spirit and scope of the present application defined in the appended claims, and all such changes are within the protection scope of the present application.

Claims

1. A warp knit shoe upper fabric having a novel photochromic material, characterized by: The fabric body has a weft density wpc of 10, a warp density cpc of 14, and a draft density cpc of 13.5, and comprises interlaced knitted polyester photochromic yarns, first polyester yarns, and second polyester yarns, the polyester photochromic yarns being wrapped with microcapsules, the microcapsules comprising a shell having a cavity and a photochromic liquid filled in the cavity.

2. The warp knit upper fabric with novel photochromic material according to claim 1, characterized in that: The photochromic liquid is a spiropyran derivative.

3. The warp knit upper fabric with novel photochromic material according to claim 2, characterized in that: The polyester photochromic yarns comprise first yarns and second yarns formed by twisting polyester fibers, the first yarns and the second yarns being spirally wound, and the microcapsules being distributed in the first yarns, the second yarns, and between the first yarns and the second yarns.

4. The warp knit upper fabric with novel photochromic material according to claim 1 or 2 or 3, characterized in that: The fabric body has a weight of 227 g / m 2 .

Images