A lacy fabric with elastic non-fusible thread and anti-snapping

Abstract

The application discloses a stretchable and non-fusible and anti-falling-apart lace fabric, which comprises a fabric body, a stretchable ground layer and a pattern layer forming a main pattern of the fabric body, wherein the ground layer comprises non-fusible yarns Y1, Y2, Y3 and Y4, the non-fusible yarn Y1 is inelastic and is knitted in a chain stitch structure, the non-fusible yarn Y2 is elastic and is knitted in a changed weft insertion structure, the non-fusible yarn Y3 is elastic and is knitted in a chain stitch structure, and the non-fusible yarn Y4 is elastic and is knitted in a weft insertion structure; the pattern layer is knitted on the surface of the fabric body in a changed weft insertion or loop structure, the non-fusible yarns Y1 and Y3 form a plating structure, and Y1 and Y3 form loops corresponding to each needle position in the knitting process according to the movement mode and sequence of a loop forming mechanism. The application improves the warp and weft stretching performance of the lace fabric, has the advantage of not being easy to fall apart after cutting, and can be widely applied to underwear, body-hugging clothes, sports and leisure clothes.

Description

Technical Field

[0001] This invention relates to a lace fabric, specifically an elastic lace fabric without heat-melting yarn and resistant to unraveling. Background Technology

[0002] Currently, lace fabrics produced using traditional techniques generally have a large warp opening and a relatively small weft opening (typically 30%-40%), and they are prone to unraveling after cutting. These problems severely limit their application in clothing. To effectively improve the tendency of traditional fabrics to unravel after cutting, lace manufacturers are constantly exploring and adjusting their techniques, such as:

[0003] CN101426971A discloses a lace knitted fabric and a method for manufacturing the same, which utilizes heat-melting yarns to knit lace. After knitting, the lace knitted fabric is heated at a temperature lower than the melting temperature of the chain stitch yarn but not lower than the melting temperature of the heat-melting yarn, causing a portion of the heat-melting yarn to melt. A portion of the molten portion adheres to and inserts into the chain stitch yarn. As a result, the connection between the individual yarns can be maintained, thus preventing yarn wear. Furthermore, the molten bonded portion can be formed by breaking the heat-melting yarn. Therefore, even if a portion of the chain stitch yarn constituting the chain stitch texture is segmented, wear of the chain stitch texture can be prevented by the holding portion of the heat-melting yarn, thus preventing wear beyond the holding portion of the chain stitch texture.

[0004] Similar to the above are CN 208803234 U, CN 101426971 A, and CN 112368435 A, which relate to fabrics and weaving methods.

[0005] These solutions utilize the principle that heat-melting yarns melt at the intersection of loops at specific temperatures, thus preventing them from unraveling. While this improves the unraveling problem, it also introduces a new drawback: the fabric becomes stiffer overall and its opening is reduced. This new problem is even more unacceptable to both underwear designers and wearers.

[0006] Through multiple technical improvements and production adjustments, the fabric body disclosed in this invention has the advantages of having a tensile strength greater than 80% in both the warp and weft directions (LTD03 standard) and being less prone to unraveling after cutting. It can be widely used in underwear, shapewear, sportswear, and casual wear. Summary of the Invention

[0007] To solve the above-mentioned technical problems, the present invention provides an elastic lace fabric without heat-melting yarn and with anti-fraying properties, which has good anti-fraying performance and improves the warp and weft tensile properties of the lace fabric.

[0008] To solve the above-mentioned technical problems, the present invention adopts the following technical solution:

[0009] A type of elastic, non-thermal-melting, and anti-fraying lace fabric includes a fabric body, an elastic base layer, and a pattern layer forming the main pattern of the fabric body. The base layer includes non-thermal-melting yarns Y1, Y2, Y3, and Y4. Specifically, non-thermal-melting yarn Y1 is a non-elastic yarn woven in a chain knitting structure; non-thermal-melting yarn Y2 is an elastic yarn woven in a variable weft knitting structure; non-thermal-melting yarn Y3 is an elastic yarn woven in a chain knitting structure; and non-thermal-melting yarn Y4 is an elastic yarn woven in a weft knitting structure. The pattern layer is formed on the surface of the fabric body by non-thermal-melting yarn Y5 woven in a variable weft knitting or loop knitting structure. Non-thermal-melting yarns Y1 and Y3 form a yarn-adding structure, and these non-thermal-melting yarns Y1 and Y3 form loops corresponding to each needle position during the knitting process according to the movement mode and sequence of the loop knitting machine.

[0010] As a further improvement, the non-melting yarn Y2 passes through each needle position during the weaving process and crosses with the non-melting yarns Y2, Y3 and Y4 to weave together into a loop.

[0011] As a further improvement, the non-melting yarn Y4 passes through each needle position during the weaving process and crosses with the non-melting yarns Y1, Y2 and Y3 to weave together into a loop.

[0012] As a further improvement, the linear density of the non-thermal-melting yarn Y1 is 20D-70D, preferably 30D.

[0013] As a further improvement, the non-thermal-melting yarn Y2 is a core-spun yarn, which includes a core yarn spandex and a covering filament. The linear density of the covering filament is 20D-140D, preferably 40D, and the linear density of the core yarn spandex is 10-70D, preferably 20D.

[0014] As a further improvement, the draw ratio of the non-melting yarn Y2 is in the range of 2.0-3.6, preferably 3.0.

[0015] As a further improvement, the non-heat-melting yarn Y3 is spandex with a linear density of 20D-70D, preferably 30D.

[0016] As a further improvement, the non-heat-melting yarn Y4 is spandex with a linear density of 70D-560D.

[0017] As a further improvement, the non-thermal-melting yarn Y5 is a patterned yarn, which is a single-material yarn or a yarn composed of at least two different materials and colors, with a linear density of 40D-840D.

[0018] As a further improvement, the patterned layer includes several undulating portions woven into the surface of the base mesh layer.

[0019] Compared with the prior art, the present invention has the following beneficial technical effects:

[0020] Through the interweaving of non-thermal-melting yarns Y1, Y2, Y3, and Y4, the contact area between Y1 and Y3 at the loops changes from either Y1 or Y3 to Y1 + Y3, thus increasing the contact area. The retraction of Y3 increases the pressure on Y1 at the loops, increasing the friction between the loops of Y1 and preventing yarn unraveling. Simultaneously, Y1 and Y3 jointly contribute to the warp opening of the fabric. Y1 and Y2 interweave to form the fabric's framework; Y2 gives the base mesh a jacquard appearance and determines the weft elasticity. When Y2 passes through the loops formed by Y1 and Y3, it creates a cross-shaped friction surface with Y1 and Y3, generating friction. Y4, together with Y1 and Y3, determines the warp opening of the fabric, ensuring the fabric's stretch and comfort.

[0021] With the above weave structure, tested according to LTD03 standard, the tensile properties in both warp and weft directions are greater than 80% under a force of 7.5 lbf, and it has the advantage of not easily coming apart after cutting. It can be widely used in underwear, shapewear, sportswear and casual wear. Attached Figure Description

[0022] Appendix Figure 1 This is a schematic diagram of the cross-sectional structure of the present invention;

[0023] Appendix Figure 2 This is a schematic diagram of the movement structure of the bottom mesh layer padding yarn of the present invention;

[0024] Appendix Figure 3 This is a schematic diagram of the movement of the floral pattern padding yarn in this invention;

[0025] Appendix Figure 4 This is a schematic diagram of the physical property curves of the fabric of the present invention;

[0026] Appendix Figure 5 This is a schematic diagram showing the length change of yarn from a stretched state to a finished state.

[0027] Appendix Figure 6 This is a schematic diagram of the friction of the contact surfaces of the non-thermal-melting yarns Y1, Y2, and Y3 of the present invention.

[0028] Figure label:

[0029] Base layer 1, pattern layer 2. Detailed Implementation

[0030] Embodiments of the present invention are described in detail below, examples of which are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and should not be construed as limiting the present invention.

[0031] In the description of this invention, it should be understood that if terms such as "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," and "counterclockwise" are used to indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, they are only for the convenience of describing the invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, features defined with "first" and "second" may explicitly or implicitly include one or more of the stated features. In the description of this invention, "a plurality of" means two or more, unless otherwise explicitly specified.

[0032] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection. They can refer to a mechanical connection or an electrical connection. They can refer to a direct connection or an indirect connection through an intermediate medium, and they can refer to the internal communication of two components or the interaction between two components. For those skilled in the art, the specific meaning of the above terms in this invention can be understood according to the specific circumstances.

[0033] Example 1

[0034] like Figure 1-4As shown, a type of elastic, non-thermal-melting, and anti-fraying lace fabric includes a fabric body, an elastic base layer 1, and a pattern layer 2 forming the main pattern of the fabric body. The base layer 1 includes non-thermal-melting yarns Y1, Y2, Y3, and Y4. Among them, non-thermal-melting yarn Y1 is a non-elastic yarn woven in a chain knitting structure, non-thermal-melting yarn Y2 is an elastic yarn woven in a variable weft knitting structure, non-thermal-melting yarn Y3 is an elastic yarn woven in a chain knitting structure, and non-thermal-melting yarn Y4 is an elastic yarn woven in a weft knitting structure. The pattern layer 2 is formed on the surface of the fabric body by non-thermal-melting yarn Y5 woven in a variable weft knitting or loop knitting structure. Non-thermal-melting yarns Y1 and Y3 form a yarn-adding structure. Loops are formed in the fabric body corresponding to each needle position during the knitting process. The fabric body is formed by weaving together five types of non-heat-melting yarns. In addition to these five types, a sixth or seventh type of non-heat-melting yarn can be added if needed. Regarding the fabric structure, besides the base layer and the pattern layer, the pattern layer can be designed as a multi-layered structure for greater aesthetic appeal. The specific process of the pattern layer can be flexibly selected to ultimately form patterns such as crown buds, lantern buds, or other shapes to meet different decorative needs.

[0035] All yarns used in the weaving process are non-heat-melting yarns. Non-heat-melting yarns Y1 and Y3 employ a yarn-adding structure, and according to the movement mode and sequence of the looping mechanism, loops are formed in each row, i.e., each needle position, during the weaving process, thereby forming a more reliable connection structure and improving the performance of not easily unraveling.

[0036] Through the weaving of the above five non-heat-melting yarns using corresponding process structures, an effective anti-unraveling function is achieved, while the tensile properties in both warp and weft directions are also increased. Non-heat-melting yarns Y1, Y4, and Y3 are woven along the warp direction, while non-heat-melting yarn Y2, while also woven along the warp direction, is offset in the weft direction according to the process design to form a weft extension line. Specifically, the contact area of ​​non-heat-melting yarns Y1 and Y3 at the loops changes from either Y1 or Y3 to a combination of Y1 and Y3, transforming the contact of a single yarn into the joint contact of two yarns, thus increasing the contact area. The increased shrinkage of Y3, as an elastic yarn, increases the pressure on non-heat-melting yarn Y1 at the loops, increasing the friction between loops and preventing unraveling between loops, thereby increasing the overall anti-unraveling performance of the fabric. Simultaneously, the weaving of non-heat-melting yarns Y1 and Y3 into loops along the warp direction contributes to the warp opening of the fabric body. Y1 and Y2 interlock to form the fabric's base frame. While Y2 runs along the warp direction, it is offset in the weft direction according to the process design, forming a weft extension line. Simultaneously, it interlocks with Y1 in the warp direction, increasing the connection's strength. Y2 gives the base mesh layer a jacquard appearance and affects the weft elasticity of the fabric itself, pulling the fabric in the weft direction. When Y2 passes through the loop formed by Y1 and Y3, it forms a cross-shaped friction surface with Y1 and Y3, generating friction. The friction between Y1 and Y3 themselves also increases resistance, further improving anti-unraveling properties. Figure 6 As shown.

[0037] Y4, along with Y1 and Y3, runs along the warp direction, thus jointly determining the warp opening of the fabric and ensuring its stretch and comfort. Figure 5 As shown, this represents a process state from a stretched state to a relaxed state. Figure 5 The left side represents the stretched state, and the right side represents the relaxed state. In the stretched state, non-heat-melting yarn Y1 is straight, and Y3 and Y4 are stretched. In the relaxed state, Y3 and Y4 are straight after shrinkage, while Y1 is slightly arched due to the shrinkage of Y3 and Y4. Y3 and Y4 also shorten due to shrinkage. Furthermore, the straight-line length of each yarn segment a1 to b1 in the relaxed state is shorter than that in the stretched state (due to the arching). Simultaneously, the yarns in the relaxed state are thicker than their corresponding counterparts in the stretched state, while yarns Y1 and Y3 become thicker due to shrinkage. Y5 forms the main pattern of the fabric, enhancing its aesthetic appeal.

[0038] During the knitting process, the non-heat-melting yarn Y2 passes through each needle position and crosses with the non-heat-melting yarns Y1, Y2, and Y4 to form a loop. Similarly, during the knitting process, the non-heat-melting yarn Y4 passes through each needle position and crosses with the non-heat-melting yarns Y1, Y2, and Y3 to form a loop.

[0039] In addition, the following conditions are used to select different yarns for better performance.

[0040] The non-heat-melting yarn Y1 has a linear density of 20D-70D, preferably 30D. The non-heat-melting yarn Y2 is a core-spun yarn, which includes a core spandex yarn and a covering filament. The linear density of the covering filament is 20D-140D, preferably 40D, and the linear density of the core spandex yarn is 10-70D, preferably 20D.

[0041] The draw ratio of the non-heat-melting yarn Y2 is in the range of 2.0-3.6, preferably 3.0, which forms a better tensile force, enables better contact between the non-heat-melting yarns Y1 and Y3, and generates friction.

[0042] The non-heat-melting yarn Y3 is spandex with a linear density of 20D-70D, preferably 30D. The non-heat-melting yarn Y4 is spandex with a linear density of 70D-560D.

[0043] The non-heat-melting yarn Y5 is a patterned yarn, which is a single-material yarn or a yarn composed of at least two different materials and colors, with a linear density of 40D-840D.

[0044] Of the non-heat-melting yarns used in this application, only non-heat-melting yarn Y1 is a non-elastic yarn, while all other yarns are elastic yarns. This ensures that the fabric as a whole has good elasticity. The anti-unraveling property relies on the interweaving and interlocking of the yarns, especially the non-heat-melting yarn Y2 which passes through and connects with Y1 and Y3, while Y4 also connects with both Y1 and Y3, thus creating a good overall tightness.

[0045] As a production example, see below:

[0046] In the specific weaving process of this invention, the following method is adopted:

[0047] 1. Yarn warping:

[0048] 1) Warping of core-spun yarn and filament:

[0049] Warping machine model: Karl Mayer DS21 / 30NC-2, passive yarn feeding.

[0050] Warping temperature: 23℃ Warping humidity: 65%

[0051] 2) Warping of spandex:

[0052] Warping machine model: Karl Mayer DSE-H21 / 30NC-2, positive yarn feed.

[0053] Warping temperature: 24℃ Warping humidity: 78%

[0054] 2. Weaving

[0055] Machine model: LRJ 83 / 1B, serial number: E24

[0056] Adjust various parameters such as machine traction and yarn feed rate reasonably according to the expected development goals to ensure smooth start-up.

[0057] 3. Yarn selection and yarn threading

[0058] Y1: PA6 30D / 68F SD FDY full wear;

[0059] Y2: PA6 40D / 12F / 1SD DTY single-pack PU 20D full wear;

[0060] Y3: PU 30D full wear;

[0061] Y4: PU 140D full wear;

[0062] Y5: PA6 140D / 48F / 1*2TB DTY, the yarn should be selected according to the pattern;

[0063] 4. Production process

[0064] Raw material washing → Pre-dyeing at 195℃ → Overflow dyeing → Finishing at 160℃

[0065] 5. Finished product tensile test

[0066] Test standard: LTD03 7.5 lbf

[0067] Test conditions: stretching speed 10 inches / minute, return speed 20 inches / minute, clamp width 3 inches, clamp distance 12.7 cm.

[0068] Test results: L: 91%, W: 95%, Reference Figure 4 As shown.

[0069] The lace fabric of this invention exhibits a tensile strength greater than 80% in both the warp and weft directions under a force of 7.5 lbf according to LTD03 standards. It also has the advantage of being less prone to unraveling after cutting and can be widely used in underwear, shapewear, sportswear, and casual wear.

[0070] It should be noted that the above are merely preferred embodiments of the present invention and are not intended to limit the present invention. Although the present invention has been described in detail with reference to the embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. However, any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A type of elastic, heat-resistant, non-melting lace fabric, comprising a fabric body, characterized in that, The fabric consists of an elastic base layer and a pattern layer that forms the main pattern of the fabric body. The base layer includes non-heat-melting yarns Y1, Y2, Y3, and Y4. Specifically, non-heat-melting yarn Y1 is a non-elastic yarn woven in a chain knitting structure; non-heat-melting yarn Y2 is an elastic yarn woven in a variable weft weft knitting structure; non-heat-melting yarn Y3 is an elastic yarn woven in a chain knitting structure; and non-heat-melting yarn Y4 is an elastic yarn woven in a weft weft weft knitting structure. The pattern layer is formed by non-heat-melting yarn Y5 woven into the fabric body in a variable weft weft or loop knitting structure. The surface is formed; non-heat-melting yarns Y1 and Y3 form a yarn-adding structure, and the non-heat-melting yarns Y1 and Y3 form loops corresponding to each needle position during the knitting process according to the movement mode and sequence of the looping mechanism; the non-heat-melting yarn Y2 passes through each needle position during the knitting process and crosses with the non-heat-melting yarns Y2, Y3 and Y4 to jointly knit into loops; the non-heat-melting yarn Y4 passes through each needle position during the knitting process and crosses with the non-heat-melting yarns Y1, Y2 and Y3 to jointly knit into loops.

2. The elastic, heat-resistant, non-melting lace fabric according to claim 1, characterized in that, The linear density of the non-thermal melt yarn Y1 is 20D-70D.

3. The elastic, heat-resistant, non-melting lace fabric according to claim 1, characterized in that, The non-thermal-melting yarn Y2 is a core-spun yarn, which includes a core spandex yarn and a covering filament. The linear density of the covering filament is 20D-140D, and the linear density of the core spandex yarn is 10-70D.

4. The elastic, heat-resistant, non-melting lace fabric according to claim 1, characterized in that, The draw ratio of the non-thermal melt yarn Y2 ranges from 2.0 to 3.

6.

5. The elastic, heat-resistant, non-melting lace fabric according to claim 1, characterized in that, The non-heat-melting yarn Y3 is spandex with a linear density of 20D-70D.

6. The elastic, heat-resistant, non-melting lace fabric according to claim 1, characterized in that, The non-heat-melting yarn Y4 is spandex with a linear density of 70D-560D.

7. The elastic, heat-resistant, non-melting lace fabric according to claim 1, characterized in that, The non-heat-melting yarn Y5 is a patterned yarn, which is a single-material yarn or a yarn composed of at least two different materials and colors, with a linear density of 40D-840D.

8. The elastic, heat-resistant, non-melting lace fabric according to claim 1, characterized in that, The patterned layer includes several undulating portions woven into the surface of the base mesh layer.

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