Weaving Method Of Double-Warp And Quadruple-Weft Jacquard Fabric With Double-Weft Color Gradient Expression

Abstract

Provided is a weaving method for a double-warp and quadruple-weft jacquard fabric with double-weft color gradient expression. A combination of warps composed of a first warp J1 and a second warp J2 and a combination of wefts composed of a first weft W1, a second weft W2, a third weft W3, and a fourth weft W4 are used as implementation objects. Any two groups of wefts gradually develop colors on a fabric surface, and the other two groups of wefts do not develop color in the back of a fabric. Based on principle of double-layer weave configuration, warp and weft threads are used to establish structure models with double-weft color gradient expression, design a face coloring weave, design a back weave, design a relationship between a face layer and a back layer of fabric, design a compound weave process, design a digital pattern, and design a compound structure diagram.

Description

CROSS REFERENCE TO RELATED APPLICATION

[0001] This patent application claims the benefit and priority of Chinese Patent Application No. 202410402274.7, entitled “WEAVING METHOD OF DOUBLE-WARP AND QUADRUPLE-WEFT JACQUARD FABRIC WITH DOUBLE-WEFT COLOR GRADIENT EXPRESSION” filed on Apr. 3, 2024, the disclosure of which is incorporated by reference herein in its entirety as part of the present application.TECHNICAL FIELD

[0002] The present disclosure relates to a weaving method of a double-warp and quadruple-weft jacquard fabric with double-weft color gradient expression, pertaining to the technical field of the weaving of jacquard fabrics.BACKGROUND

[0003] In the invention and practice of layered-combination design mode, colors in the digital pattern are directly corresponded to gamut weaves in the gamut weave-database formed based on the layered-combination design modes, which is used for the development of novel jacquard fabrics, and breaks through shortcomings of traditional single-plane design mode of jacquard fabrics, such as the limitations of fabric structure construction and color expression. Jacquard structures with bidirectional multi-group thread configuration could solve the shortage of constraint color gamut space on color model of the unidirectional multi-group thread configuration structure, thus extending the double-weft color gradient expression method of a double-warp and triple-weft structure model. However, the construction of jacquard structure models determines the number of color expression thread groups, thus determining the color of fabrics. Based on this, the double-warp and triple-weft structure model still has some shortcomings in color development, and there is no relevant literature about the weaving method for the double-warp and quadruple-weft jacquard fabric structure with double-weft color gradient expression.

[0004] In view of this, the present disclosure is proposed.SUMMARY

[0005] In view of this, the present disclosure provides a weaving method of a double-warp and quadruple-weft jacquard fabric with double-weft color gradient expression. With the layered-combination design mode, the combined color gradient expression of any two groups of weft threads on a fabric surface is achieved, and the fabric is endowed with abundant color expression.

[0006] Specifically, the present disclosure is achieved through the following technical solutions:

[0007] Provided is a weaving method of a double-warp and quadruple-weft jacquard fabric with double-weft color gradient expression, includes / consists of the following steps:

[0008] step 1, constructing a structure model by:

[0009] taking a warp combination composed of a first warp J1 and a second warp J2, and a weft combination composed of a first weft W1, a second weft W2, a third weft W3, and a fourth weft W4 as implementation objects, interweaving any two groups of wefts and one group of warp on a surface of a fabric for color expression, and interweaving other two groups of wefts and remaining one group of warp on a back of the fabric to form a backing, thus forming a plurality of double-warp and quadruple-weft jacquard structure models with double-weft color gradient expression;

[0010] step 2, designing a face coloring compound weave by:

[0011] step (i): selecting a weft-faced or warp-faced twill or satin as a basic weave I and a basic weave II, the basic weave I and the basic weave II having a same weave repeat number N, a same step number S, but different starting points;

[0012] step (ii): setting a full-color technical point weave of the basic weave II according to the basic weave I: reversing all interlacing points of the basic weave I to obtain a reversed basic weave I, taking a reversed interlacing point in the reversed basic weave I as a starting end, and reinforcing one interlacing point upward / downward in a warp direction to obtain the full-color technical point weave of the basic weave II; and setting a full-color technical point weave of the basic weave I according to the basic weave II by reversing all interlacing points of the basic weave II to obtain a reversed basic weave II, taking a reversed interlacing point in the reversed basic weave II as a starting end, and reinforcing one interlacing point downward / upward in the other warp direction to obtain the full-color technical point weave of the basic weave I;

[0013] and step (iii): taking the basic weave I as an initial weave, and the full-color technical point weave thereof as a final weave, and designing a shaded weave-database of the basic weave I, i.e., a face coloring weave-database I, by reinforcing / reducing interlacing points with a proviso of avoiding the full-color technical point of the basic weave I; taking the basic weave II as an initial weave, and the full-color technical point weave thereof as a final weave, and designing a shaded weave-database of the basic weave II, i.e., a face coloring weave-database II, by reinforcing / reducing interlacing points with a proviso of avoiding the full-color technical point of the basic weave II; the face coloring weave-database I and the face coloring weave-database II constructing a face coloring weave-database, taking one weave separately from the face coloring weave-database I and the face coloring weave-database II, combining taken weaves weft-by-weft (from top to bottom when the wefts are arranged sequentially from top to bottom, for example at an arrangement ratio of 1:1) to form a compound weave, i.e., a face coloring compound weave of the double-warp and quadruple-weft jacquard structure with double-weft color gradient expression;

[0014] step 3, designing a back weave by:

[0015] obtaining a back weave I and a back weave II according to requirements for designing a double-layer structure of a face coloring weave and a back weave that a weave repeat number of the back weave and a weave repeat number of the face coloring weave are the same or integral multiples of each other;

[0016] step 4, designing a relationship between a face layer and a back layer of the fabric by:

[0017] a relationship between a face layer and a back layer of the fabric including stitching and not stitching;

[0018] under the condition that the face layer and the back layer of the fabric are not stitched, enabling that a face warp is always located above a back weft, and that a back warp is always located below a face weft, from a front view of the fabric; and

[0019] under the condition that the face layer and the back layer of the fabric are stitched, enabling that a weave repeat number of a stitching weave and a weave repeat number of the face coloring weave are the same or integral multiples of each other, from a front view of the fabric, and stitching the face layer and the back layer of the fabric through a self-stitching method;

[0020] step 5, designing a compound weave process by:

[0021] step (a): setting an arrangement ratio of the first warp J1 to the second warp J2, and arranging the first warp J1 and the second warp J2 from left to right; setting an arrangement ratio of the first weft W1, the second weft W2, the third weft W3, and the fourth weft W4, and from top to bottom arranging the first weft W1, the second weft W2, the third weft W3, and the fourth weft W4;

[0022] step (b): configuring a face coloring weave I and a face coloring weave II at a position where the face warp interweaves with the face weft according to a weft arrangement sequence, and configuring the back weave I and the back weave II at a position where the back warp interweaves with the back weft; lifting all the warps at interweaving positions of face warps and back wefts, i.e., configuring warp interlacing points, and sinking all the warps at interweaving positions of back warps and face wefts, i.e., configuring weft interlacing points;

[0023] step (c): matching a relationship between the face layer and the back layer of the fabric; and

[0024] step (d): designing a compound weave of each structure model according to characteristics of double-warp and quadruple-weft jacquard structure models with double-weft color gradient expression;

[0025] step 6, designing a digital pattern by:

[0026] designing a digital pattern in a bitmap format (arbitrary digital pattern themes), selecting colors, and designing a series of gradient colors based on each of selected colors, wherein a number of grades in each one series of gradient colors is less than or equal to a maximum level of a number of shaded weaves in the face coloring weave-database I or the face coloring weave-database II, namely (N−2)+(N−3)×(N−1); various series of gradient color effects in the digital pattern do not overlap with each other; and a maximum level of colors is 12×[(N−2)+(N−3)×(N−1)]2;

[0027] step 7, designing a compound structure diagram by:

[0028] combining the face coloring weave-database I and the face coloring weave-database II formed by interweaving the face warp and the face weft, the back weave formed by interweaving the back warp and the back weft, the face-warp back-weft stitching weave formed by interweaving the face warp and the back weft, or a warp float formed in a situation that the face warp does not interweave with the back weft, and the back-warp face-weft stitching weave formed by interweaving the back warp and the face weft, or a weft float formed by a situation that the back warp does not interweave with the face weft according to a jacquard structure model, wherein various series of gradient colors correspond to shaded weaves in the face coloring weave I and the face coloring weave II, respectively, and are replaced with corresponding shaded weaves one by one to form a compound structure diagram of the double-warp and quadruple-weft jacquard structure with double-weft color gradient expression; and

[0029] step 8, weaving by:

[0030] adding warp and weft selection information to the compound structure diagram of the double-warp and quadruple-weft jacquard structure with double-weft color gradient expression, setting a warp density and a weft density, selecting two groups of warp threads and four groups of weft threads, and weaving by using the compound structure diagram obtained in step 7, thus obtaining the double-warp and quadruple-weft jacquard fabric with double-weft color gradient expression.

[0031] In some embodiments, in step 1, two groups of threads are arranged in warp direction, i.e., the warp combination composed of a first warp J1 and a second warp J2; and four groups of threads are arranged in weft direction, i.e., a weft combination composed of a first weft W1, a second weft W2, a third weft W3, and a fourth weft W4; in some embodiments, the first warp J1, the second warp J2 are arranged from left to right at a ratio of 1:1, and the first weft W1, the second weft W2, the third weft W3, and the fourth weft W4 are arranged from top to bottom at a ratio of 1:1:1:1.

[0032] In some embodiments, in step 2 the twill or satin is selected from three elementary weaves; in some embodiments, N satisfies 5≤N≤48 and is an integer; in some embodiments, S is an integer.

[0033] In some embodiments, in step 2, the basic weave I and the basic weave II are used to design a face coloring weave I and a face coloring weave II; in some embodiments, the wefts are arranged sequentially from top to bottom at an arrangement ratio of 1:1 and configured to form a face coloring compound weave; in some embodiments, a number QB of optional basic weaves is determined by a weave repeat number N and a number QNSN of step number S when the weave repeat number is N; a number QBI of optional weaves of the basic weave I satisfies: QBI=N×QNSN, a number QBII of optional weaves of the basic weave II satisfies: QBII=(N−2), a number of optional basic weaves, QB=QBI×QBII; in some embodiments, full-color technical point weaves are designed according to the basic weave I and the basic weave II.

[0034] In some embodiments, in step 2, an reinforcement speed of the warp interlacing point is set as M, and M satisfies 1≤M≤N, and is an integer; under the condition that M=N, a level of weaves in the face coloring weave-database I and a level of weaves in the face coloring weave-database II both reach minimum, each being N−2, and a level of correspondingly formed face coloring compound weaves is minimum, namely (N−2)2; and under the condition that M=1, a level of weaves in the face coloring weave-database I and a level of weaves in the face coloring weave-database II both are maximum, namely, (N−2)+(N−3)×(N−1), and a level of correspondingly formed face coloring compound weaves is maximum, namely [(N−2)+(N−3)×(N−1)]2.

[0035] In some embodiments, in step 3, double-weft color gradient expression is required, expect for two groups of face wefts, the remaining two groups of back wefts are interwoven with back warps according to a weft-backed weave design method.

[0036] In some embodiments, in step 3, according to the arranging sequence of wefts, a back weave I and a back weave II are formed, and a back compound weave is formed at an arranging ratio of 1:1; in some embodiments, a number of optional combinations of the back weave I and a number of optional combinations of the back weave II is represented by Qb, weaves with a weave repeat number of N, a divisor of the N (not being 1), and an integral multiple of the N are arranged from left to right according to an arrangement sequence from a weft-faced weave to a warp-faced weave, and a number of the weaves with a weave repeat number of N, a divisor of the N (not being 1), and an integral multiple of the N is n; Ni represents a weave repeat number of a i-th weave that has a weave repeat number of the N, a divisor of the N (not being 1), or an integral multiple of the N; and QSi represents a number of a step number Si of the i-th weave that has a weave repeat number of the N, a divisor of the N (not being 1), or an integral multiple of the N, and Qb, Ni, and QSisatisfyQb=[∑i=1n(Ni×QSi)]2,where 1≤i<n;In some embodiments, in step 4, a face coloring compound weave is formed by combining reinforced basic weave I and basic weave II, and the face layer and the back layer of the fabric are stitched through a self-stitching method, which facilitates the covering of stitching interlacing point(s).

[0038] In some embodiments, in step 4, in one weave repeat, stitching interlacing points are uniformly distributed, and stitching interlacing points are distributed in a direction same as interlacing points of the face coloring weave I, the face coloring weave II, or the face coloring compound weave are distributed; in some embodiments, from a front view of the fabric, a back-warp face-weft stitching method is adopted, and the stitching interlacing point is designed to be a warp interlacing point, and interlacing point of face warp(s) at adjacent left side and / or right side of a back warp where the stitching interlacing point is located is a warp interlacing point, thus ensuring that stitching interlacing points of back warps and face wefts are always covered by face warps. In some embodiments, a face-warp back-weft stitching method is adopted, the stitching interlacing point is designed to be a weft interlacing point, and interlacing point(s) of face weft(s) at adjacent upper side and / or lower side of a back weft where the stitching interlacing point is located is a weft interlacing point, to guarantee that stitching interlacing points of face warps and back wefts are always covered by face wefts; in some embodiments, a combined stitching method is adopted, that is to say, a back-warp face-weft stitching method and a face-warp back-weft stitching method are meanwhile adopted.

[0039] In some embodiments, in step 4, QS represents a number of weave configuration manners at a stitching position; under the condition that the face layer and the back layer are not stitched, QNS=1, and under the condition that the face layer and the back layer are stitched, the weave repeat number of the stitching weave is N, a divisor of the N (but not being 1), or an integral multiple of the N; QFSP represents a combinatorial number of an optional number of stitching weft interlacing points in a face-warp back-weft stitching weave, and QBSP represents a combinatorial number of an optional number of stitching warp interlacing points in a back-warp face-weft stitching weave, and QS, QNS, QFSP and QBSP satisfy:QS=1+(CQFSP1×C21+CQBSP1×C21)+(CQFSP2+CQBSP2+CQFSP1×C21×CQBSP1×C21)+(CQFSP2×CQBSP1×C21+CQFSP1×C21×CQBSP2)+(CQFSP2×CQBSP2).

[0040] In some embodiments, in step 5, the first warp J1 and the second warp J2 are arranged from left to right at an arrangement ratio of 1:1; in some embodiments, the first weft W1, the second weft W2, the third weft W3, and the fourth weft W4 are arranged from top to bottom at an arranging ratio of 1:1:1:1.

[0041] In some embodiments, in step 5, the face layer is not stitched with the back layer, an interweaving position of the face warp and the back weft is configured with a warp float; and an interweaving position of the back warp and the face weft is configured with a weft float.

[0042] In some embodiments, in step 5, the face layer is stitched with the back layer, under the condition that a back-warp face-weft stitching method is adopted, an interweaving position of the back warp and the face weft is configured with back-warp face-weft stitching weave; in some embodiments, a face-warp back-weft stitching method is adopted, an interweaving position of the face warp and the back weft is configured with face-warp back-weft stitching weave; in some embodiments, a combined stitching method is adopted, an interweaving position of the back warp and the face weft is configured with a back-warp face-weft stitching weave, and an interweaving position of the face warp and the back weft is configured with a face-warp back-weft stitching weave.

[0043] In some embodiments, in step 5, the design of a compound weave of each structure model is completed in turn according to characteristics of the double-warp four-weft jacquard structure model with double-weft color gradient expression, the maximum level of the compound weaves is 12×QB×[(N−2)+(N−3)×(N−1)]2×Qb×QS.

[0044] According to the weaving method above, two groups of warp threads interweave with four groups of weft threads, and any two groups of weft threads and one group of warp thread are interwoven on a fabric surface to express the color gradation effect, while the other two groups of weft threads and the remaining one group of warp thread are interwoven in the back of the fabric to form a back of the fabric without surface coloring, which meets the requirements of two-layer structure, thereby achieving the design of the double-warp and quadruple-weft jacquard fabric with double-weft color gradient expression.

[0045] Further, in some embodiments,

[0046] In step 1, twelve structure models with double-weft color gradient expression are provided as follows:

[0047] (1) under the condition that the first warp J1 is a coloring face warp, and interweaves with coloring face wefts that are the first weft W1 and the second weft W2, on a fabric surface for coloring, a back warp that is the second warp J2, interweaves with back wefts that are the third weft W3 and the fourth weft W4, to form a back of the fabric;

[0048] (2) under the condition that the first warp J1 is a coloring face warp, and interweaves with coloring face wefts that are the first weft W1 and the third weft W3, on a fabric surface for coloring, a back warp that is the second warp J2, interweaves with back wefts that are the second weft W2 and the fourth weft W4, to form a back of the fabric;

[0049] (3) under the condition that the first warp J1 is a coloring face warp, and interweaves with coloring face wefts that are the first weft W1 and the fourth weft W4, on a fabric surface for coloring, a back warp that is the second warp J2, interweaves with back wefts that are the second weft W2 and the third weft W3, to form a back of the fabric;

[0050] (4) under the condition that the first warp J1 is a coloring face warp, and interweaves with coloring face wefts that are the second weft W2 and the third weft W3, on a fabric surface for coloring, a back warp that is the second warp J2, interweaves with back wefts that are the first weft W1 and the fourth weft W4, to form a back of the fabric;

[0051] (5) under the condition that the first warp J1 is a coloring face warp, and interweaves with coloring face wefts that are the second weft W2 and the fourth weft W4, on a fabric surface for coloring, a back warp that is the first warp J2, interweaves with back wefts that are the first weft W1 and the third weft W3, to form a back of the fabric;

[0052] (6) under the condition that the first warp J1 is a coloring face warp, and interweaves with coloring face wefts that are the third weft W3 and the fourth weft W4, on a fabric surface for coloring, a back warp that is the first warp J2, interweaves with back wefts that are the first weft W1 and the second weft W2, to form a back of the fabric;

[0053] (7) under the condition that the second warp J2 is a coloring face warp, and interweaves with coloring face wefts that are the first weft W1 and the second weft W2, on a fabric surface for coloring, a back warp that is the first warp J1, interweaves with back wefts that are the third weft W3 and the fourth weft W4, to form a back of the fabric;

[0054] (8) under the condition that the second warp J2 is a coloring face warp, and interweaves with coloring face wefts that are the first weft W1 and the third weft W3, on a fabric surface for coloring, a back warp that is the first warp J1, interweaves with back wefts that are the second weft W2 and the fourth weft W4, to form a back of the fabric;

[0055] (9) under the condition that the second warp J2 is a coloring face warp, and interweaves with coloring face wefts that are the first weft W1 and the fourth weft W4, on a fabric surface for coloring, a back warp that is the first warp J1, interweaves with back wefts that are the second weft W2 and the third weft W3, to form a back of the fabric;

[0056] (10) under the condition that the second warp J2 is a coloring face warp, and interweaves with coloring face wefts that are the second weft W2 and the third weft W3, on a fabric surface for coloring, a back warp that is the first warp J1, interweaves with back wefts that are the first weft W1 and the fourth weft W4, to form a back of the fabric;

[0057] (11) under the condition that the second warp J2 is a coloring face warp, and interweaves with coloring face wefts that are the second weft W2 and the fourth weft W4, on a fabric surface for coloring, a back warp that is the first warp J1, interweaves with back wefts that are the first weft W1 and the third weft W3, to form a back of the fabric; and

[0058] (12) under the condition that the second warp J2 is a coloring face warp, and interweaves with coloring face wefts that are the third weft W3 and the fourth weft W4, on a fabric surface for coloring, a back warp that is the first warp J1, interweaves with back wefts that are the first weft W1 and the second weft W2, to form a back of the fabric.

[0059] When designing the face coloring weave, a total of twelve sets of face coloring weave-databases are provided according to twelve double-warp and quadruple-weft jacquard structure models with double-weft color gradient expression, which are as follows: a face coloring weave-database of the first warp J1, the first weft W1 and the second weft W2; a face coloring weave-database of the first warp J1, the first weft W1 and the third weft W3; a face coloring weave-database of the first warp J1, the first weft W1 and the fourth weft W4; a face coloring weave-database of the first warp J1, the second weft W2 and the third weft W3; a face coloring weave-database of the first warp J1, the second weft W2 and the fourth weft W4; a face coloring weave-database of the first warp J1, the third weft W3 and the fourth weft W4; a face coloring weave-database of the second warp J2, the first weft W1 and the second weft W2; a face coloring weave-database of the second warp J2, the first weft W1 and the third weft W3; a face coloring weave-database of the second warp J2, the first weft W1 and the fourth weft W4; a face coloring weave-database of the second warp J2, the second weft W2 and the third weft W3; a face coloring weave-database of the second warp J2, the second weft W2 and the fourth weft W4; a face coloring weave-database of the second warp J2, the third weft W3 and the fourth weft W4.

[0060] When designing the back weave, two groups of back wefts in any double-warp and quadruple-weft jacquard structure models with double-weft color gradient expression, according to the weft-backed weave design method, could form A21×A11=2 back weaves of weft-backed structure models in total, so a total of (A21×A11)×C121=2×12=24 back weaves of weft-backed structure models could be formed based on the twelve double-warp and quadruple-weft jacquard structure models with double-weft color gradient expression.

[0061] In some embodiments, two groups of back wefts are arranged from top to bottom in an arrangement ratio of 1:1 and interweave with back warps, which is taken as an example below:

[0062] Under the condition that the first warp J1 is a coloring face warp, and the first weft W1 and the second weft W2 are coloring face wefts, the second warp J2 is able to interweave with the third weft W3 according to the back weave I or the back weave II, and correspondingly, the second warp J2 is interwoven with the fourth weft W4 according to the back weave II or the back weave I.

[0063] Under the condition that the first warp J1 is a coloring face warp, and the first weft W1 and the third weft W3 are coloring face wefts, the second warp J2 is able to interweave with the second weft W2 according to the back weave I or the back weave II, and correspondingly, the second warp J2 is interwoven with the fourth weft W4 only according to the back weave II or the back weave I.

[0064] Under the condition that the first warp J1 is a coloring face warp, and the first weft W1 and the fourth weft W4 are coloring face wefts, the second warp J2 is able to interweave with the second weft W2 according to the back weave I or the back weave II, and correspondingly, the second warp J2 is interwoven with the third weft W3 only according to the back weave II or the back weave I; or

[0065] Under the condition that the first warp J1 is a coloring face warp, and the second weft W2 and the third weft W3 are coloring face wefts, the second warp J2 is able to interweave with the first weft W1 according to the back weave I or the back weave II, and correspondingly, the second warp J2 is interwoven with the fourth weft W4 only according to the back weave II or the back weave I.

[0066] Under the condition that the first warp J1 is a coloring face warp, and the second weft W2 and the fourth weft W4 are coloring face wefts, the second warp J2 is able to interweave with the first weft W1 according to the back weave I or the back weave II, and correspondingly, the second warp J2 is interwoven with the third weft W3 only according to the back weave II or the back weave I.

[0067] Under the condition that the first warp J1 is a coloring face warp, and the third weft W3 and the fourth weft W4 are coloring face wefts, the second warp J2 is able to interweave with the first weft W1 according to the back weave I or the back weave II, and correspondingly, the second warp J2 is interwoven with the second weft W2 only according to the back weave II or the back weave I.

[0068] Under the condition that the second warp J2 is a coloring face warp, and the first weft W1 and the second weft W2 are coloring face wefts, the first warp J1 is able to interweave with the third weft W3 according to the back weave I or the back weave II, and correspondingly, the first warp J1 is interwoven with the fourth weft W4 according to the back weave II or the back weave I.

[0069] Under the condition that the second warp J2 is a coloring face warp, and the first weft W1 and the third weft W3 are coloring face wefts, the first warp J1 is able to interweave with the second weft W2 according to the back weave I or the back weave II, and correspondingly, the first warp J1 is interwoven with the fourth weft W4 only according to the back weave II or the back weave I.

[0070] Under the condition that the second warp J2 is a coloring face warp, and the first weft W1 and the fourth weft W4 are coloring face wefts, the first warp J1 is able to interweave with the second weft W2 according to the back weave I or the back weave II, and correspondingly, the first warp J1 is interwoven with the third weft W3 only according to the back weave II or the back weave I.

[0071] Under the condition that the second warp J2 is a coloring face warp, and the second weft W2 and the third weft W3 are coloring face wefts, the first warp J1 is able to interweave with the first weft W1 according to the back weave I or the back weave II, and correspondingly, the first warp J1 is interwoven with the fourth weft W4 only according to the back weave II or the back weave I.

[0072] Under the condition that the second warp J2 is a coloring face warp, and the second weft W2 and the fourth weft W4 are coloring face wefts, the first warp J1 is able to interweave with the first weft W1 according to the back weave I or the back weave II, and correspondingly, the first warp J1 is interwoven with the third weft W3 only according to the back weave II or the back weave I.

[0073] Under the condition that the second warp J2 is a coloring face warp, and the third weft W3 and the fourth weft W4 are coloring face wefts, the first warp J1 is able to interweave with the first weft W1 according to the back weave I or the back weave II, and correspondingly, the first warp J1 is interwoven with the second weft W2 only according to the back weave II or the back weave I.

[0074] The working principle and effects of some embodiments of the present disclosure are described as follows:

[0075] A combination of warps composed of the first warp J1 and the second warp J2 and a combination of wefts composed of the first weft W1, the second weft W2, the third weft W3, and the fourth weft W4 are used as implementation objects. That is to say, when two groups of warp threads interweave with four groups of weft threads, any two groups of weft threads gradually develop colors on the fabric surface, and the other two groups of weft threads do not develop color in the back of the fabric. Based on the principle of double-layer weave configuration, the warps and wefts are used to establish double-warp and quadruple-weft jacquard structure models with double-weft color gradient expression, design a face coloring weave, design a back weave, design a relationship between a face layer and a back layer of the fabric, design a compound weave process, design a digital pattern, and design a compound structure diagram. Finally, by configuring weaving parameters, a jacquard fabric of a double-warp and quadruple-weft jacquard structure model with double-weft color gradient expression could be woven according to the compound structure diagram.

[0076] By the above technical means, the jacquard fabric of the double-warp and quadruple-weft jacquard structure model with double-weft color gradient expression could be developed, two groups of warp threads and four groups of weft threads in the fabric structure jointly participate in the color gradient expression, and 12 series of gradient colors could be formed on the fabric surface. Under the constraint of the technical solution of the present disclosure, the 12 series of gradient colors in the design of the digital patterns could be randomly interspersed, and each series of colors and each face coloring compound weave in the face coloring compound weave-database could be correspondingly configured and replaced one by one, which could achieve the design and production of the jacquard fabric of a double-warp and quadruple-weft jacquard structure model with double-weft color gradient expression that has various simulation and innovative effects, and meet the requirements of mass production of fabrics.BRIEF DESCRIPTION OF THE DRAWINGS

[0077] To describe the technical solutions in the embodiments of the present disclosure more clearly, the following briefly introduces the accompanying drawings required for the description of the embodiments or the prior art. Apparently, the accompanying drawings in the following description show merely some embodiments of the present disclosure, and those of ordinary skill in the art may still derive other drawings from these accompanying drawings without creative efforts.

[0078] FIG. 1A to FIG. 1L show a schematic diagram of a structure model of a jacquard fabric in an embodiment of the present disclosure.

[0079] FIG. 2A to FIG. 2D show a basic weave of a jacquard fabric in an embodiment of the present disclosure, and a full-color technical point weave thereof, in which

[0080] FIG. 2A represents basic weave I and FIG. 2B represents full-color technical point weave of the basic weave I of FIG. 2A; FIG. 2C represents basic weave II and FIG. 2D represents full-color technical point weave of the basic weave II of FIG. 2C.

[0081] FIG. 3A and FIG. 3B show a face coloring weave-database with the least weft-reinforced level (M=N), in which,

[0082] FIG. 3A represents face coloring weave-database I, FIG. 3B represents face coloring weave-database II.

[0083] FIG. 4 shows a weave schematic diagram of a back weave I in an embodiment of the present disclosure.

[0084] FIG. 5 shows a weave schematic diagram of a back weave II in an embodiment of the present disclosure.

[0085] FIG. 6 shows a weave schematic diagram of a warp interlacing point at a position where a face warp interweaves with a back weft in an embodiment of the present disclosure.

[0086] FIG. 7 shows a weave schematic diagram of a back-warp face-weft stitching weave when a face layer and a back layer of the fabric are stitched in an embodiment of the present disclosure.

[0087] FIG. 8 shows a weave schematic diagram of a weft interlacing point at a position where a back warp interweaves with a face weft in an embodiment of the present disclosure.

[0088] FIG. 9 shows a schematic diagram of a compound weave process of a structure model 1 with double weft color gradient expression in FIG. 1A.

[0089] FIG. 10A to FIG. 10N show a partial compound weave-database of a double-warp and quadruple-weft jacquard structure with double-weft color gradient expression formed by laying a weave corresponding to No. 1 in a face coloring weave-database I in FIG. 3A, each face coloring weave in face coloring weave-database II, and weaves in FIG. 4-FIG. 8 into a structure model 1 in FIG. 1A according to FIG. 9.

[0090] FIG. 11A to FIG. 11N show a partial compound weave-database of a double-warp and quadruple-weft jacquard structure with double-weft color gradient expression formed by laying a weave corresponding to No. 2 in a face coloring weave-database I in FIG. 3A, each face coloring weave in face coloring weave-database II, and weaves in FIG. 4-FIG. 8 into a structure model 1 in FIG. 1A according to FIG. 9.

[0091] FIG. 12A to FIG. 12N show a partial compound weave-database of a double-warp and quadruple-weft jacquard structure with double-weft color gradient expression formed by laying a weave corresponding to No. 3 in a face coloring weave-database I in FIG. 3A, each face coloring weave in face coloring weave-database II, and weaves in FIG. 4-FIG. 8 into a structure model 1 in FIG. 1A according to FIG. 9.

[0092] FIG. 13A to FIG. 13N show a partial compound weave-database of a double-warp and quadruple-weft jacquard structure with double-weft color gradient expression formed by laying a weave corresponding to No. 4 in a face coloring weave-database I in FIG. 3A, each face coloring weave in face coloring weave-database II, and weaves in FIG. 4-FIG. 8 into a structure model 1 in FIG. 1A according to FIG. 9.

[0093] FIG. 14A to FIG. 14N show a partial compound weave-database of a double-warp and quadruple-weft jacquard structure with double-weft color gradient expression formed by laying a weave corresponding to No. 5 in a face coloring weave-database I in FIG. 3A, each face coloring weave in face coloring weave-database II, and weaves in FIG. 4-FIG. 8 into a structure model 1 in FIG. 1A according to FIG. 9.

[0094] FIG. 15A to FIG. 15N show a partial compound weave-database of a double-warp and quadruple-weft jacquard structure with double-weft color gradient expression formed by laying a weave corresponding to No. 6 in a face coloring weave-database I in FIG. 3A, each face coloring weave in face coloring weave-database II, and weaves in FIG. 4-FIG. 8 into a structure model 1 in FIG. 1A according to FIG. 9.

[0095] FIG. 16A to FIG. 16N show a partial compound weave-database of a double-warp and quadruple-weft jacquard structure with double-weft color gradient expression formed by laying a weave corresponding to No. 7 in a face coloring weave-database I in FIG. 3A, each face coloring weave in face coloring weave-database II, and weaves in FIG. 4-FIG. 8 into a structure model 1 in FIG. 1A according to FIG. 9.

[0096] FIG. 17A to FIG. 17N show a partial compound weave-database of a double-warp and quadruple-weft jacquard structure with double-weft color gradient expression formed by laying a weave corresponding to No. 8 in a face coloring weave-database I in FIG. 3A, each face coloring weave in face coloring weave-database II, and weaves in FIG. 4-FIG. 8 into a structure model 1 in FIG. 1A according to FIG. 9.

[0097] FIG. 18A to FIG. 18N show a partial compound weave-database of a double-warp and quadruple-weft jacquard structure with double-weft color gradient expression formed by laying a weave corresponding to No. 9 in a face coloring weave-database I in FIG. 3A, each face coloring weave in face coloring weave-database II, and weaves in FIG. 4-FIG. 8 into a structure model 1 in FIG. 1A according to FIG. 9.

[0098] FIG. 19A to FIG. 19N show a partial compound weave-database of a double-warp and quadruple-weft jacquard structure with double-weft color gradient expression formed by laying a weave corresponding to No. 10 in a face coloring weave-database I in FIG. 3A, each face coloring weave in face coloring weave-database II, and weaves in FIG. 4-FIG. 8 into a structure model 1 in FIG. 1A according to FIG. 9.

[0099] FIG. 20A to FIG. 20N show a partial compound weave-database of a double-warp and quadruple-weft jacquard structure with double-weft color gradient expression formed by laying a weave corresponding to No. 11 in a face coloring weave-database I in FIG. 3A, each face coloring weave in face coloring weave-database II, and weaves in FIG. 4-FIG. 8 into a structure model 1 in FIG. 1A according to FIG. 9.

[0100] FIG. 21A to FIG. 21N show a partial compound weave-database of a double-warp and quadruple-weft jacquard structure with double-weft color gradient expression formed by laying a weave corresponding to No. 12 in a face coloring weave-database I in FIG. 3A, each face coloring weave in face coloring weave-database II, and weaves in FIG. 4-FIG. 8 into a structure model 1 in FIG. 1A according to FIG. 9.

[0101] FIG. 22A to FIG. 22N show a partial compound weave-database of a double-warp and quadruple-weft jacquard structure with double-weft color gradient expression formed by laying a weave corresponding to No. 13 in a face coloring weave-database I in FIG. 3A, each face coloring weave in face coloring weave-database II, and weaves in FIG. 4-FIG. 8 into a structure model 1 in FIG. 1A according to FIG. 9.

[0102] FIG. 23A to FIG. 23N show a partial compound weave-database of a double-warp and quadruple-weft jacquard structure with double-weft color gradient expression formed by laying a weave corresponding to No. 14 in a face coloring weave-database I in FIG. 3A, each face coloring weave in face coloring weave-database II, and weaves in FIG. 4-FIG. 8 into a structure model 1 in FIG. 1A according to FIG. 9.

[0103] FIG. 24 shows a physical effect diagram formed by weaving compound weaves with double-weft color gradient expression shown in FIG. 10A to FIG. 23N of the present disclosure and a structure model 7 in FIG. 1G.DETAILED DESCRIPTION OF THE EMBODIMENTS

[0104] In order to make the technical problems to be solved, technical solutions and beneficial effects in the present disclosure clearer, the technical solutions in the embodiments of the present disclosure will be further described below in detail in conjunction with the accompanying drawings in embodiments of the present disclosure. It should be understood that the specific embodiments described here are only used to explain the present disclosure and are not used to limit the technical solutions of the present disclosure. All other embodiments obtained by a person of ordinary skill in the art based on embodiments of the present disclosure without creative efforts shall fall within the scope of the present disclosure.

[0105] It should be noted that the orientation or position indicated by the terms “upper”, “lower”, “left”, “right” and the like is the orientation or position shown in the accompanying drawings, which is only used for the convenience of description, and cannot be construed as the limitation to the technical solution.

[0106] Furthermore, the terms “first” and “second” are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implying the number of the indicated technical features. “a plurality of” means two or more, unless otherwise specifically defined.

[0107] According to an embodiment of the present disclosure, a situation that the basic weave I and the basic weave II both employ 16-thread 5-step weft-faced satin is taken as an example to describe the implementation method of the present disclosure in detail.

[0108] A face warp, a back warp, a face weft, and a back weft are arranged and combined to form twelve types of structure models, as shown in FIG. 1A to FIG. 1L. A first warp J1 and a second warp J2 are configured from left to right in an arrangement ratio of 1:1, and a first weft W1, a second weft W2, a third weft W3, and a fourth weft W4 are configured from top to bottom in an arrangement ratio of 1:1:1:1. In FIG. 1A to FIG. 1L, parts filled with a hollow circle and a hollow triangle (two 16×16 squares) represent interweaving positions of the face warp and two groups of face wefts, respectively, while parts filled with an inverted hollow triangle and filled with a hollow diamond (two 16×16 squares) represent interweaving positions of the back warp and two groups of back wefts, respectively.

[0109] By taking the structure model 1 as an example, when the first warp J1 acts as the face warp, and the first weft W1 and the second weft 2 act as the face wefts, the first warp J1 and the first weft W1 are interwoven according to a face coloring weave I, the first warp J1 and the second weft W2 are interwoven according to a face coloring weave II, the second warp J2 respectively interweaves with the third weft W3 and the fourth weft W4 to form a back weave I and a back weave II. In FIG. 1A to FIG. 1L, structure model 2, structure model 3, structure model 4, structure model 5, structure model 6, structure model 7, structure model 8, structure model 9, structure model 10, structure model 11, and structure model 12 have the same weave configuration rules as the structure model 1.

[0110] Because the structure model of the double-warp and quadruple-weft jacquard structure with double-weft color gradient expression mainly develops color on the surface of the fabric through the change of the two groups of wefts. In order to prevent the situation that the color is affected as the weft float is truncated, a reinforcement method for reinforcing the warp interlacing points by the weft transition is used. The 16-thread weft satin with a step number of 5 is used as a basic weave, an upper left corner of weave is set as a starting point (1, 1) to design a basic weave I with the starting point of (1, 1) and a basic weave II with a starting point of (14, 1). The full-color technical point weave of the basic weave II is set based on the basic weave I, and the method includes the following steps: reversing all interlacing points of the basic weave I to obtain a reversed basic weave I, taking a reversed interlacing point in the reversed basic weave I as a starting end, and reinforcing one weft interlacing point upward in a warp direction. A full-color technical point weave of the basic weave I is set based on the basic weave II, and the method includes the following steps: reversing all interlacing points of the basic weave II to obtain a reversed basic weave II, taking a reversed interlacing point in the reversed basic weave II as a starting end, and reinforcing one weft interlacing point downwards in the warp direction, as shown in FIG. 2A to FIG. 2D.

[0111] Based on the basic weave I, without damaging the full-color technical point, in this embodiment, a reinforcement speed M=N=16 of warp interlacing points is used for reinforcement each time, the reinforcement in the weft direction goes to the right first, is avoided after encountering the full-color technical point, and returns to the starting point position and then goes to the left, thus forming a face coloring weave-database I with the number of weaves being N−2=14. Based on the basic weave II, without damaging the full-color technical point, in this embodiment, a reinforcement speed M=N=16 of warp interlacing points is used for reinforcement each time, the reinforcement in the weft direction goes to the right first, is avoided after encountering the full-color technical point, and returns to the starting point position and then goes to the left, thus forming a face coloring weave-database II with the number of weaves being N−2=14. In the face coloring weave-database I and the face coloring weave-database II, the weaves are numbered from 1 to 14 from left to right and from top to bottom, as shown in FIG. 3A and FIG. 3B.

[0112] In some embodiments of the disclosure, the two groups of back wefts, i.e., the third weft W3 and the fourth weft W4, are arranged from top to bottom in an arrangement ratio of 1:1, and separately interweave with the second warp J2 according to a weft-backed weave design method to form a back weave I and a back weave II, where the back weave I covers the back weave II. According to the characteristics of the face coloring weave and the principle of interweaving balance, the weave repeat numbers of the back weave and the face coloring weave are the same or an integral multiple of each other. A 16 / 5 weft satin with the starting point of (1, 1) in the face coloring weave-database I is used as the back weave I, and 16 / 5 warp satin with a starting point of (11,1) is selected as the back weave II, as shown in FIG. 4 and FIG. 5.

[0113] Because the face warp and the face weft are interwoven on the surface of the fabric for color development, and the 16-thread 5-step weft-faced satin is used as the basic weave, the face coloring weave-database I and the face coloring weave-database II formed by increasing the number of warp interlacing points in the weft direction are used for coloring by interweaving the warps and wefts through continuous weft float and warp interlacing points. Therefore, a back-warp face-weft stitching method is selected to stitch a face layer and a back layer of the fabric, the stitching point is the warp interlacing point, interlacing point(s) of face warps at adjacent left side and / or right side of the stitching point, must be warp interlacing points, thus ensuring that stitching interlacing points are always covered by face warps. In the design process of the stitching weave, in order to make the surface of the jacquard fabric of the double-warp and quadruple-weft jacquard structure with double-weft color gradient expression to achieve uniform and gradient double-weft transition effect, the basic weave I of 16-thread 5-step weft-faced satin is used as the stitching weave, warp interlacing points of the obtained stitching weave are always covered by warp interlacing points of the shaded weaves in the face coloring weave-database, thus satisfying the double-layer structure design requirements. According to the characteristics of the face coloring weave I, it could be determined that the stitching weave has unique rationality, as shown in FIG. 7.

[0114] According to the design of the double-warp and quadruple-weft jacquard structure model with double-weft color gradient expression, a compound weave is formed according to a design method of the double-layer structure. First, in a combined structure model, the first warp J1 and the second warp J2 are arranged from left to right in an arrangement ratio of 1:1, the first weft W1, the second weft W2, the third weft W3, and the fourth weft W4 are arranged from top to bottom according to an arrangement ratio of 1:1:1:1. Secondly, a face coloring weave is arranged at an interweaving position of the face warp and the face weft, and a backing weave is arranged at an interweaving position of the back warp and the back weft, warps at interweaving positions of the face warp and the back weft are all lifted, thereby configuring warp interlacing points, and a stitching weave and a weft interlacing point are configured at an interweaving position of the back warp and the face wefts.

[0115] According to the characteristics of the twelve double-warp and quadruple-weft jacquard structure models with double-weft color gradient expression, the face coloring weave, the back weave, the stitching weave, the weft interlacing point and the warp interlacing point configured at the corresponding positions are combined to establish the compound weave-databases with double-weft color gradient expression of the twelve double-warp and quadruple-weft jacquard structures.

[0116] After setting the structure model 1 in FIG. 1A (panel (a) of FIG. 9), the compound weave process with double-weft color gradient expression is explained as follows: drawing a face coloring weave I at a position where the first warp J1 interweaves with the first weft W1, drawing a face coloring weave II at a position where the first warp J1 interweaves with the second weft W2, drawing a back weave I at a position where the second warp J2 interweaves with the third weft W3, and drawing a back weave II at a position where the second warp J2 interweaves with the fourth weft W4 (panel (b) of FIG. 9)→configuring a warp interlacing point at positions where the first warp J1 interweaves with the third weft W3 and the fourth weft W4 (panel (c) of FIG. 9)→drawing a stitching weave at a position where the second warp J2 interweaves with the first weft W1, and configuring a weft interlacing point at a position where the second warp J2 interweaves with the second weft W2 (panel (d) of FIG. 9)→interweaving the first warp J1 with the first weft W1, the second weft W2, the third weft W3, and the fourth weft W4 from top to bottom in an arrangement ratio of 1:1:1:1 according to the rules, and interleaving the second warp J2 with the first weft W1, the second weft W2, the third weft W3, and the fourth weft W4 from top to bottom in an arrangement ratio of 1:1:1:1 (panel (e) of FIG. 9)→combining the interweaving rule of the first warp J1 with the first weft W1, the second weft W2, the third weft W3, and the fourth weft W4 and the interweaving rule of the second warp J2 with the first weft W1, the second weft W2, the third weft W3, and the fourth weft W4 from left to right in an arrangement ratio of 1:1, thus forming the compound weave (panel (f) of FIG. 9).

[0117] Based on the above steps, the compound weaves of the double-warp and quadruple-weft jacquard structure with double-weft color gradient expression are summarized to establish a complete compound weave-database. The structure model 1 in FIG. 1A is taken as an example, as shown in FIG. 3A, fourteen 16-thread 5-step satins based on the starting point of (1, 1) shown in FIG. 3A are used as the face coloring weave I, and fourteen 16-thread 5-step satins based on the starting point of (14, 1) shown in FIG. 3B are used as the face coloring weave II. The basic weave I of the 16-thread 5-step weft-faced satin with the starting point of (1, 1) is used as a back weave I, and the 16-thread 5-step warp-faced satin weave obtained by reversing the back weave I shown in FIG. 5 and then moving all the starting points upwards by two rows is used as the back weave II. The face warp does not interweave with the back weft, and in this way, a warp interlacing point shown in FIG. 6 is configured. The back warp interweaves with the face weft that is the first weft W1, the basic weave I of the 16-thread 5-step weft-faced satin shown in FIG. 7 is used as a stitching weave. The back warp does not interweave with the face weft that is the second weft W2, and in this way, a weft interlacing point shown in FIG. 8 is configured, thus forming a compound weave-database of the double-warp and quadruple-weft jacquard structure with double-weft color gradient expression, as shown in FIG. 10A to FIG. 23N. Except for the face coloring weave, the back weave, the stitching weave and the like are constant. Therefore, the compound weave is numbered according to “ZH”, “the serial number of the basic weave I”-“the serial number of the basic weave II”. For example, the “ZH1-1” represents that the compound weave of the double-warp and quadruple-weft jacquard structure with double-weft color gradient expression is formed by combining No. 1 weave in the face coloring weave-database I and No. 1 weave in the face coloring weave-database II (in order to make a distinction, the warp interlacing points of first weft W1, the second weft W2, the third weft W3, and the fourth weft W4 are represented by parts filled with a cross mark, parts filled with a circle with half black, parts filled with a circle with quadrant black and parts filled with a circled dot, respectively, while the weft interlacing points are all expressed in white).

[0118] Digital patterns are designed under a bitmap format. Digital patterns have arbitrary themes and include 12 colors. A series of gradient colors are designed based on each color. The obtained 12 series of gradient colors could be interspersed but not overlapped with each other in the digital patterns. In this example, the maximum color development level is 12×(N−2)2=12×(16−2)2=2352.

[0119] 12 series of gradient colors in the digital patterns correspond to 12 sets of face coloring compound weave-databases of the double-warp and quadruple-weft jacquard structure with double-weft color gradient expression effect, respectively. Each gradient color is replaced with a face coloring weave formed by interweaving the face warp and the face weft in a corresponding weave-database by a one-to-one corresponding method. Meanwhile, a back weave formed by interweaving the back warp and the back weft, a warp interlacing point formed from a situation that the face warp does not interweave with the back weft, a stitching weave formed by interweaving the back warp with the face weft, and a weft interlacing point formed from a situation that the back warp does not interweave with the face weft are combined according to the twelve types of double-warp and quadruple-weft jacquard structure model, thus forming a compound structure diagram of a jacquard fabric of a double-warp and quadruple-weft jacquard structure with double-weft color gradient expression.

[0120] Information about warp and weft selection is added to the combined structure of the double-warp and quadruple-weft jacquard structure with double-weft color gradient expression. Warp density and weft density are set, and two groups of warps (black and white) and four groups of color wefts are selected. The compound structure diagram of the jacquard fabric could be directly used to produce a jacquard fabric of the double-warp and quadruple-weft jacquard structure with double-weft color gradient expression. The fabric effect diagram achieved after the weaves are configured according to the structure model 1 in FIG. 1A and the structure model 7 in FIG. 1G is shown in FIG. 24. According to the structure model 1 in FIG. 1A, the square part on the surface of the fabric presents a type I color gradient effect produced by two groups of face wefts, namely the first weft and the second weft, which are respectively configured with red and yellow threads, and one group of face warp, namely the first warp, which is configured with black thread. According to the structure model 7 in FIG. 1G, an outer frame part on the surface of the fabric presents single type of solid color effect generated by two groups of face wefts, namely the first weft and the second weft, which are respectively configured with red and yellow thread, and one group of face warp, namely the second warp, which is configured with white thread.

[0121] The above content is a specific embodiment created in combination with the present disclosure, which is only used to explain and illustrate the present disclosure, rather than limiting. Any modifications, replacements and deductions made to the present disclosure, or the use of the content of the present disclosure in the local position of the fabric, etc. within the spirit of the present disclosure and the scope of the claims, all fall within the scope of the present disclosure.

Claims

1. A weaving method of a double-warp and quadruple-weft jacquard fabric with double-weft color gradient expression, comprising:step 1, constructing a structure model by:taking a warp combination composed of a first warp J1 and a second warp J2, and a weft combination composed of a first weft W1, a second weft W2, a third weft W3, and a fourth weft W4 as implementation objects, interweaving any two groups of wefts and one group of warp on a surface of a fabric for color expression, and interweaving other two groups of wefts and remaining one group of warp on a back of the fabric to form a backing, thus forming a plurality of double-warp and quadruple-weft jacquard structure models with double-weft color gradient expression;step 2, designing a face coloring compound weave by:step (i): selecting a weft-faced or warp-faced twill or satin as a basic weave I and a basic weave II, the basic weave I and the basic weave II having a same weave repeat number N, a same step number S, but different starting points;step (ii): setting corresponding full-color technical point weaves according to the basic weave I and the basic weave II by: reversing all interlacing points of the basic weave I to obtain a reversed basic weave I, taking a reversed interlacing point solely in the reversed basic weave I as a starting end, and reinforcing one interlacing point upward / downward in a warp direction to obtain a full-color technical point weave of the basic weave II; and reversing all interlacing points of the basic weave II to obtain a reversed basic weave II, taking a reversed interlacing point solely in the reversed basic weave II as a starting end, and reinforcing one interlacing point downward / upward in the warp direction to obtain a full-color technical point weave of the basic weave I; andstep (iii): taking the basic weave I as an initial weave, and the full-color technical point weave thereof as a final weave, and designing a shaded weave-database of the basic weave I, i.e., a face coloring weave-database I, by reinforcing / reducing interlacing points with a proviso of avoiding the full-color technical point of the basic weave I; taking the basic weave II as an initial weave, and the full-color technical point weave thereof as a final weave, and designing a shaded weave-database of the basic weave II, i.e., a face coloring weave-database II, by reinforcing / reducing interlacing points with a proviso of avoiding the full-color technical point of the basic weave II; taking one weave separately from the face coloring weave-database I and the face coloring weave-database II, combining taken weaves weft-by-weft to form a face coloring compound weave of the double-warp and quadruple-weft jacquard structure with double-weft color gradient expression;step 3, designing a back weave by:obtaining a back weave I and a back weave II according to requirements for designing a double-layer structure of a face coloring weave and a back weave that a weave repeat number of the back weave and a weave repeat number of the face coloring weave are the same or integral multiples of each other;step 4, designing a relationship between a face layer and a back layer of the fabric by:under the condition that the face layer and the back layer of the fabric are not stitched, enabling that a face warp is always located above a back weft, and that a back warp is always located below a face weft, from a front view of the fabric; andunder the condition that the face layer and the back layer of the fabric are stitched, enabling that a weave repeat number of a stitching weave and a weave repeat number of the face coloring weave are the same or integral multiples of each other, from a front view of the fabric, and stitching the face layer and the back layer of the fabric through a self-stitching method;step 5, designing a compound weave process by:step (a): setting an arrangement ratio of the first warp J1 to the second warp J2, and horizontally arranging the first warp J1 and the second warp J2; setting an arrangement ratio of the first weft W1, the second weft W2, the third weft W3, and the fourth weft W4, and vertically arranging the first weft W1, the second weft W2, the third weft W3, and the fourth weft W4;step (b): configuring a face coloring weave I and a face coloring weave II at a position where the face warp interweaves with the face weft according to a weft arrangement sequence, and configuring the back weave I and the back weave II at a position where the back warp interweaves with the back weft; lifting all the warps at interweaving positions of face warps and back wefts, i.e., configuring warp interlacing points, and sinking all the warps at interweaving positions of back warps and face wefts, i.e., configuring weft interlacing points;step (c): matching a relationship between the face layer and the back layer of the fabric; andstep (d): designing a compound weave of each structure model according to characteristics of structure models of the double-warp and quadruple-weft jacquard structure with double-weft color gradient expression;step 6, designing a digital pattern by:designing a digital pattern in a bitmap format, selecting colors, and designing a series of gradient colors based on each of selected colors, wherein a number of grades in each one series of gradient colors is less than or equal to a maximum level of a number of shaded weaves in the face coloring weave-database I or the face coloring weave-database II, namely (N−2)+(N−3)×(N−1); various series of gradient color effects in the digital pattern do not overlap with each other; and a maximum level of colors is 12×[(N−2)+(N−3)×(N−1)]2;step 7, designing a compound structure diagram by:combining the face coloring weave-database I and the face coloring weave-database II formed by interweaving the face warp and the face weft, the back weave I and the back weave II formed by interweaving the back warp and the back weft, and a warp float, a weft float and / or the stitching weave generated by relationship between the face layer and the back layer of the fabric according to a jacquard structure model, wherein various series of gradient colors correspond to shaded weaves in the face coloring weave I and the face coloring weave II, respectively, and are replaced with corresponding shaded weaves one by one to form a compound structure diagram of the double-warp and quadruple-weft jacquard structure with double-weft color gradient expression; andstep 8, weaving by:adding warp and weft selection information to the compound structure diagram of the double-warp and quadruple-weft jacquard structure with double-weft color gradient expression, setting a warp density and a weft density, selecting two groups of warps and four groups of wefts, and weaving by using the compound structure diagram obtained in step 7, thus obtaining the double-warp and quadruple-weft jacquard fabric with double-weft color gradient expression.

2. The weaving method of the double-warp and quadruple-weft jacquard fabric with double-weft color gradient expression as claimed in claim 1, wherein in step 2, N is an integer, and satisfies 5≤N≤48; S is an integer; under the condition that the weave repeat number is N, a number of step number S is represented by QNSN, a number QBI of optional weaves of the basic weave I satisfies: QBI=N×QNSN, and a number QBII of optional weaves of the basic weave II satisfies: QBII=N−2; a reinforcing speed of a warp interlacing point is set as M, and M satisfies 1≤M≤N, and is an integer; under the condition that M=N, a number of weaves in the face coloring weave-database I and a number of weaves in the face coloring weave-database II both reach minimum, each being N−2, and a number of correspondingly formed face coloring compound weaves is minimum, namely (N−2)2; and under the condition that M=1, a number of weaves in the face coloring weave-database I and a number of weaves in the face coloring weave-database II both are maximum, namely, (N−2)+(N−3)×(N−1), and a number of correspondingly formed face coloring compound weaves is maximum, namely [(N−2)+(N−3)×(N−1)]2.

3. The weaving method of the double-warp and quadruple-weft jacquard fabric with double-weft color gradient expression as claimed in claim 1, wherein in step 3, a number of optional back weaves is Qb, weaves with a weave repeat number of N, a divisor of the N not being 1, and an integral multiple of the N are arranged from left to right according to an arrangement sequence from a weft-faced weave to a warp-faced weave, and a number of the weaves with a weave repeat number of N, a divisor of the N not being 1, and an integral multiple of the N is n; Ni represents a weave repeat number of a i-th weave that has a weave repeat number of the N, a divisor of the N not being 1, or an integral multiple of the N; and QSi represents a number of a step number Si of the i-th weave that has a weave repeat number of the N, a divisor of the N not being 1, or an integral multiple of the N, and Qb, Ni, and QSi satisfyQb=[∑i=1n(Ni×QSi)]2,where 1≤i≤n.

4. The weaving method of the double-warp and quadruple-weft jacquard fabric with double-weft color gradient expression as claimed in claim 1, wherein in step 4, in the self-stitching method, a back-warp face-weft stitching method is adopted, a stitching interlacing point is designed to be a warp interlacing point, interlacing point(s) of face warp(s) at adjacent left side and / or right side of a back warp where the stitching interlacing point is located is a warp interlacing point, to guarantee that stitching interlacing points of the back warp and the face weft are always covered by the face warp(s); ora face-warp back-weft stitching method is adopted, a stitching interlacing point is designed to be a weft interlacing point, interlacing point(s) of face weft(s) at adjacent upper side and / or lower side of a back weft where the stitching interlacing point is located is a weft interlacing point, to guarantee that stitching interlacing points of face warps and back wefts are always covered by face wefts; ora combined stitching method is adopted, and the back warp and the face weft are stitched and meanwhile the face warp and the back weft are stitched.

5. The weaving method of the double-warp and quadruple-weft jacquard fabric with double-weft color gradient expression as claimed in claim 4, wherein QS represents a total number of weave configuration manners at a stitching position; under the condition that the face layer and the back layer are not stitched, the number QNS of the weave configuration manners is equal to 1,and under the condition that the face layer and the back layer are stitched, the weave repeat number of the stitching weave is N, a divisor of the N but not being 1, or an integral multiple of the N; QFSP represents a combinatorial number of an optional number of stitching weft interlacing points in a face-warp back-weft stitching weave, and QBSP represents a combinatorial number of an optional number of stitching warp interlacing points in a back-warp face-weft stitching weave, and QS, QNS, QFSP and QBSP satisfy:QS=1+(CQFSP1×C21+CQBSP1×C21)+(CQFSP2+CQBSP2+CQFSP1×C21×CQBSP1×C21)+(CQFSP2×CQBSP1×C21+CQFSP1×C21×CQBSP2)+(CQFSP2×CQBSP2).

6. The weaving method of the double-warp and quadruple-weft jacquard fabric with double-weft color gradient expression as claimed in claim 1, wherein in step 1, the first warp J1 and the second warp J2 are horizontally configured according to an arrangement ratio of 1:1; and the first weft W1, the second weft W2, the third weft W3, and the fourth weft W4 are vertically arranged according to an arrangement ratio of 1:1:1:1.

7. The weaving method of the double-warp and quadruple-weft jacquard fabric with double-weft color gradient expression as claimed in claim 2, wherein in step 1, the first warp J1 and the second warp J2 are horizontally configured according to an arrangement ratio of 1:1; and the first weft W1, the second weft W2, the third weft W3, and the fourth weft W4 are vertically arranged according to an arrangement ratio of 1:1:1:1.

8. The weaving method of the double-warp and quadruple-weft jacquard fabric with double-weft color gradient expression as claimed in claim 3, wherein in step 1, the first warp J1 and the second warp J2 are horizontally configured according to an arrangement ratio of 1:1; and the first weft W1, the second weft W2, the third weft W3, and the fourth weft W4 are vertically arranged according to an arrangement ratio of 1:1:1:1.

9. The weaving method of the double-warp and quadruple-weft jacquard fabric with double-weft color gradient expression as claimed in claim 4, wherein in step 1, the first warp J1 and the second warp J2 are horizontally configured according to an arrangement ratio of 1:1; and the first weft W1, the second weft W2, the third weft W3, and the fourth weft W4 are vertically arranged according to an arrangement ratio of 1:1:1:1.

10. The weaving method of the double-warp and quadruple-weft jacquard fabric with double-weft color gradient expression as claimed in claim 5, wherein in step 1, the first warp J1 and the second warp J2 are horizontally configured according to an arrangement ratio of 1:1; and the first weft W1, the second weft W2, the third weft W3, and the fourth weft W4 are vertically arranged according to an arrangement ratio of 1:1:1:1.

11. The weaving method of the double-warp and quadruple-weft jacquard fabric with double-weft color gradient expression as claimed in claim 6, wherein in step 1, twelve structure models with double-weft color gradient expression are provided:(1) under the condition that the first warp J1 is a coloring face warp, and interweaves with coloring face wefts that are the first weft W1 and the second weft W2, on a fabric surface for coloring, a back warp that is the second warp J2, interweaves with back wefts that are the third weft W3 and the fourth weft W4, to form a back of the fabric;(2) under the condition that the first warp J1 is a coloring face warp, and interweaves with coloring face wefts that are the first weft W1 and the third weft W3, on a fabric surface for coloring, a back warp that is the second warp J2, interweaves with back wefts that are the second weft W2 and the fourth weft W4, to form a back of the fabric;(3) under the condition that the first warp J1 is a coloring face warp, and interweaves with coloring face wefts that are the first weft W1 and the fourth weft W4, on a fabric surface for coloring, a back warp that is the second warp J2, interweaves with back wefts that are the second weft W2 and the third weft W3, to form a back of the fabric;(4) under the condition that the first warp J1 is a coloring face warp, and interweaves with coloring face wefts that are the second weft W2 and the third weft W3, on a fabric surface for coloring, a back warp that is the second warp J2, interweaves with back wefts that are the first weft W1 and the fourth weft W4, to form a back of the fabric;(5) under the condition that the first warp J1 is a coloring face warp, and interweaves with coloring face wefts that are the second weft W2 and the fourth weft W4, on a fabric surface for coloring, a back warp that is the second warp J2, interweaves with back wefts that are the first weft W1 and the third weft W3, to form a back of the fabric;(6) under the condition that the first warp J1 is a coloring face warp, and interweaves with coloring face wefts that are the third weft W3 and the fourth weft W4, on a fabric surface for coloring, a back warp that is the second warp J2, interweaves with back wefts that are the first weft W1 and the second weft W2, to form a back of the fabric;(7) under the condition that the second warp J2 is a coloring face warp, and interweaves with coloring face wefts that are the first weft W1 and the second weft W2, on a fabric surface for coloring, a back warp that is the first warp J1, interweaves with back wefts that are the third weft W3 and the fourth weft W4, to form a back of the fabric;(8) under the condition that the second warp J2 is a coloring face warp, and interweaves with coloring face wefts that are the first weft W1 and the third weft W3, on a fabric surface for coloring, a back warp that is the first warp J1, interweaves with back wefts that are the second weft W2 and the fourth weft W4, to form a back of the fabric;(9) under the condition that the second warp J2 is a coloring face warp, and interweaves with coloring face wefts that are the first weft W1 and the fourth weft W4, on a fabric surface for coloring, a back warp that is the first warp J1, interweaves with back wefts that are the second weft W2 and the third weft W3, to form a back of the fabric;(10) under the condition that the second warp J2 is a coloring face warp, and interweaves with coloring face wefts that are the second weft W2 and the third weft W3, on a fabric surface for coloring, a back warp that is the first warp J1, interweaves with back wefts that are the first weft W1 and the fourth weft W4, to form a back of the fabric;(11) under the condition that the second warp J2 is a coloring face warp, and interweaves with coloring face wefts that are the second weft W2 and the fourth weft W4, on a fabric surface for coloring, a back warp that is the first warp J1, interweaves with back wefts that are the first weft W1 and the third weft W3, to form a back of the fabric;(12) under the condition that the second warp J2 is a coloring face warp, and interweaves with coloring face wefts that are the third weft W3 and the fourth weft W4, on a fabric surface for coloring, a back warp that is the first warp J1, interweaves with back wefts that are the first weft W1 and the second weft W2, to form a back of the fabric.

12. The weaving method of the double-warp and quadruple-weft jacquard fabric with double-weft color gradient expression as claimed in claim 6, wherein in step 2, the arrangement ratio in a vertical combination is 1:1, and twelve sets of face coloring weave-databases are provided as follows: a face coloring weave-database of the first warp J1, the first weft W1, and the second weft W2; a face coloring weave-database of the first warp J1, the first weft W1, and the third weft W3; a face coloring weave-database of the first warp J1, the first weft W1, and the fourth weft W4; a face coloring weave-database of the first warp J1, the second weft W2, and the third weft W3; a face coloring weave-database of the first warp J1, the second weft W2, and the fourth weft W4; a face coloring weave-database of the first warp J1, the third weft W3, and the fourth weft W4; a face coloring weave-database of the second warp J2, the first weft W1, and the second weft W2; a face coloring weave-database of the second warp J2, the first weft W1, and the third weft W3; a face coloring weave-database of the second warp J2, the first weft W1 and the fourth weft W4; a face coloring weave-database of the second warp J2, the second weft W2, and the third weft W3; a face coloring weave-database of the second warp J2, the second weft W2, and the fourth weft W4; and a face coloring weave-database of the second warp J2, the third weft W3, and the fourth weft W4.

13. The weaving method of the double-warp and quadruple-weft jacquard fabric with double-weft color gradient expression as claimed in claim 12, wherein during the designing the back weave, two groups of back wefts are vertically arranged according to an arrangement ratio of 1:1 and interweave with back warps, with configuration positions thereof satisfying:under the condition that the first warp J1 is a coloring face warp, and the first weft W1 and the second weft W2 are coloring face wefts, the second warp J2 is able to interweave with the third weft W3 according to the back weave I or the back weave II, and correspondingly, the second warp J2 is interwoven with the fourth weft W4 according to the back weave II or the back weave I; orunder the condition that the first warp J1 is a coloring face warp, and the first weft W1 and the third weft W3 are coloring face wefts, the second warp J2 is able to interweave with the second weft W2 according to the back weave I or the back weave II, and correspondingly, the second warp J2 is interwoven with the fourth weft W4 only according to the back weave II or the back weave I; orunder the condition that the first warp J1 is a coloring face warp, and the first weft W1 and the fourth weft W4 are coloring face wefts, the second warp J2 is able to interweave with the second weft W2 according to the back weave I or the back weave II, and correspondingly, the second warp J2 is interwoven with the third weft W3 only according to the back weave II or the back weave I; orunder the condition that the first warp J1 is a coloring face warp, and the second weft W2 and the third weft W3 are coloring face wefts, the second warp J2 is able to interweave with the first weft W1 according to the back weave I or the back weave II, and correspondingly, the second warp J2 is interwoven with the fourth weft W4 only according to the back weave II or the back weave I; orunder the condition that the first warp J1 is a coloring face warp, and the second weft W2 and the fourth weft W4 are coloring face wefts, the second warp J2 is able to interweave with the first weft W1 according to the back weave I or the back weave II, and correspondingly, the second warp J2 is interwoven with the third weft W3 only according to the back weave II or the back weave I; orunder the condition that the first warp J1 is a coloring face warp, and the third weft W3 and the fourth weft W4 are coloring face wefts, the second warp J2 is able to interweave with the first weft W1 according to the back weave I or the back weave II, and correspondingly, the second warp J2 is interwoven with the second weft W2 only according to the back weave II or the back weave I; orunder the condition that the second warp J2 is a coloring face warp, and the first weft W1 and the second weft W2 are coloring face wefts, the first warp J1 is able to interweave with the third weft W3 according to the back weave I or the back weave II, and correspondingly, the first warp J1 is interwoven with the fourth weft W4 according to the back weave II or the back weave I; orunder the condition that the second warp J2 is a coloring face warp, and the first weft W1 and the third weft W3 are coloring face wefts, the first warp J1 is able to interweave with the second weft W2 according to the back weave I or the back weave II, and correspondingly, the first warp J1 is interwoven with the fourth weft W4 only according to the back weave II or the back weave I; orunder the condition that the second warp J2 is a coloring face warp, and the first weft W1 and the fourth weft W4 are coloring face wefts, the first warp J1 is able to interweave with the second weft W2 according to the back weave I or the back weave II, and correspondingly, the first warp J1 is interwoven with the third weft W3 only according to the back weave II or the back weave I; orunder the condition that the second warp J2 is a coloring face warp, and the second weft W2 and the third weft W3 are coloring face wefts, the first warp J1 is able to interweave with the first weft W1 according to the back weave I or the back weave II, and correspondingly, the first warp J1 is interwoven with the fourth weft W4 only according to the back weave II or the back weave I; orunder the condition that the second warp J2 is a coloring face warp, and the second weft W2 and the fourth weft W4 are coloring face wefts, the first warp J1 is able to interweave with the first weft W1 according to the back weave I or the back weave II, and correspondingly, the first warp J1 is interwoven with the third weft W3 only according to the back weave II or the back weave I; orunder the condition that the second warp J2 is a coloring face warp, and the third weft W3 and the fourth weft W4 are coloring face wefts, the first warp J1 is able to interweave with the first weft W1 according to the back weave I or the back weave II, and correspondingly, the first warp J1 is interwoven with the second weft W2 only according to the back weave II or the back weave I.

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