Manufacturing method of warp-knitted jacquard vamp with tatting doup heald effect and vamp

Abstract

The invention provides a manufacturing method of a warp-knitted jacquard vamp with a tatting leno heald effect and the vamp, which comprises the following steps of: weaving on a jacquard warp knitting machine comprising at least six guide bars, and selecting a variable weft insertion stitch and a chain stitch stitch of a common guide bar acting on a front needle bed as a basic surface layer stitch; respectively forming a twisted warp structure and a weft structure of the doup woven fabric; carrying out jacquard weave on the basic weave by selecting a pad-lacking weave acting on jacquard guide bars of the front and rear needle beds to form a doup structure of the doup-imitated fabric; a basic bottom layer structure is formed by selecting a chain stitch structure of a common guide bar acting on a rear needle bed, so that the fabric imitating the tatting leno heald pattern effect is formed, and the fabric woven through the method is good in size stability and high in wrapping performance, coils are not prone to loosening, and durability is excellent.

Description

Technical Field

[0001] The invention relates to the technical field of warp knitting, and in particular to a method for manufacturing a warp knitted jacquard shoe upper with a woven twisted heddle effect and the shoe upper. Background Art

[0002] Woven twisted palm fabric is a woven product. Patent CN116163050A introduces a woven jacquard twisted heald breathable upper fabric and its weaving method. The woven twisted palm fabric is characterized in that the warp yarns include two types, namely the twisted yarn and the twisted yarn, and the twisted yarn is wound around the twisted yarn to form a twisted yarn unit. The twisted yarn unit contains at least one twisted yarn, and a breathable area is formed between the twisted yarn units. The upper fabric formed by the twisted yarn has good air permeability and unique shape, and is very popular in the market. However, this type of woven product also has the problems of poor elasticity, poor foot wrapping, and poor stability. Summary of the invention

[0003] In order to obtain good air permeability and unique shape of woven twisted palm fabrics while solving the problems of elasticity, wrapping and stability, the present invention starts from the warp knitting process and provides a method for making a warp knitted jacquard upper with a woven twisted heald effect and an upper to solve the above technical problems.

[0004] As a first aspect of the present invention, a method for making a warp-knitted jacquard shoe upper with a woven twisted heddle effect is proposed. The method selects filament or staple yarn and weaves it on a jacquard warp knitting machine including at least 6 combs, and selects a changed weft lining structure and a chain structure of an ordinary comb bar used for the front needle bed as the basic surface layer structure to respectively form a twisted warp structure and a weft yarn structure of the twisted heddle shuttle fabric; the missing pad structure of the jacquard comb bar used for the front and rear needle beds is used to jacquard the basic structure to form a twisted warp structure of an imitation twisted heddle fabric; the chain structure of the ordinary comb bar used for the rear needle bed is used to form the basic bottom structure; and the ordinary comb bar that acts on the front needle bed to form the chain structure is arranged on the warp knitting machine in front of the ordinary comb bar that acts on the rear needle bed to form the chain structure, so that the yarns of the chain structure acting on the front and rear needle beds are bound to each other to avoid fabric delamination.

[0005] Further, the method is to weave on a single jacquard warp knitting machine equipped with 6 combs, and the order of the combs from the front needle bed to the rear needle bed is: ordinary combs GB1, GB2, GB3, JB4.1, JB4.2, GB5; wherein the ordinary combs GB1, GB2, GB5 combs act on the front needle bed, the ordinary comb GB3 comb acts on the rear needle bed, and the jacquard combs JB4.1 and JB4.2 act on the front and rear needle beds; the knitting process includes:

[0006] Weaving basic surface layer structure: the structure is woven by ordinary combs GB1, GB2 and GB5, wherein GB1 inserts the first yarn in a 1-through-1-empty manner to weave 0-0-0-0-0 / 2-2-2-2 / 0-0-0-0 / 4-4-4-4 / 2-2-2-2 / 4-4-4-4 / / variable weft insertion structure, GB2 inserts the second yarn in a 1-through-1-empty manner to weave 4-4-4-4 / 2-2-2-2 / 4-4-4-4 / 0-0-0-0-0 / 2-2-2-2 / 0-0-0-0 / / variable weft insertion structure, GB5 inserts the third yarn in a full-through manner to weave 1-0-0-0 / 0-1-1-1 / / chain structure;

[0007] Braided imitation twisted warp jacquard layer structure: the structure is braided by jacquard bars JB4.1 and JB4.2. JB4.1 inserts the fourth yarn in a full-threading manner to weave a missing-pad structure 1-1-1-1 / 1-1-1-1 / / and / or JB4.2 inserts the fifth yarn in a full-threading manner to weave a missing-pad structure 1-1-1-1 / 1-1-1-1 / / ;

[0008] Weaving basic bottom structure: It is woven by ordinary comb GB3. GB3 is fully threaded with the sixth yarn to weave a chain structure of 1-1-1-0 / 0-0-0-1 / / .

[0009] Furthermore, the method is to weave on a single jacquard warp knitting machine equipped with 8 combing bars, and the order of the combing bars from the front needle bed to the rear needle bed is: ordinary combing bars GB1, GB2, GB3, JB4.1, JB4.2, GB5, GB6, GB7, among which, ordinary combing bars GB1, GB2, GB5 combing bars act on the front needle bed to weave to form a basic surface layer structure; ordinary combing bars GB3, GB6, GB7 combing bars act on the rear needle bed to weave to form a basic bottom layer structure; jacquard combing bars JB4.1 and JB4.2 act on the front and rear needle beds to weave to form an imitation twisted warp jacquard layer structure.

[0010] Furthermore, the weaving method of ordinary combs GB6 and GB7 is: GB6 inserts the seventh yarn in a full-threading manner to weave 1-1-1-0 / 1-1-2-3 / / warp plain structure, and GB7 inserts the eighth yarn in a full-threading manner to weave 1-1-1-2 / 1-1-1-0 / / warp plain structure.

[0011] Furthermore, JB4.1 inserts the fourth yarn in a full-threading manner to weave a pad-missing structure 1-1-1-1 / 1-1-1-1 / / , and JB4.2 inserts the fifth yarn in a full-threading manner to weave a weft-inserted structure 0-0-0-0 / 1-1-1-1 / / .

[0012] Furthermore, JB4.1 inserts the fourth yarn in a full-threading manner to weave a weft-inserted structure 0-0-0-0 / 1-1-1-1 / / , and JB4.2 inserts the fifth yarn in a full-threading manner to weave a weft-missing structure 1-1-1-1 / 1-1-1-1 / / .

[0013] Furthermore, the fourth yarn and the fifth yarn have different yarn characteristics.

[0014] Furthermore, the fourth yarn and the fifth yarn are different in at least one of color, fineness or gloss.

[0015] Furthermore, the fourth yarn is a cationic polyester yarn, the fifth yarn is a nylon yarn, and the remaining yarns are polyester yarns.

[0016] As a second aspect of the present invention, a shoe upper is proposed, which is made by a warp knitting jacquard production method with a woven twisted heald effect as described above; it includes a basic surface layer structure formed by a variable weft insertion structure and a chain structure woven by an ordinary comb bar acting on the front needle bed, an imitation twisted warp jacquard layer structure formed by a missing pad structure woven by a jacquard comb bar acting on the front and rear needle beds, and a basic bottom layer structure formed by a chain structure woven by an ordinary comb bar acting on the rear needle bed, wherein the chain structure yarns of the basic surface layer structure and the chain structure yarns of the basic bottom layer are tied to each other to prevent fabric delamination.

[0017] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0018] The warp knitted jacquard fabric of the present invention has the pattern effect of woven twisted products, while retaining the dimensional stability and strong wrapping characteristics of warp knitted products, and the coils are not easy to fall apart and have excellent durability.

[0019] The twisted heald effect of the warp knitted jacquard fabric of the present invention can be adjusted by the type of yarn prepared by the jacquard comb. When two jacquard combs are used to weave the missing pad structure and the two yarns have different characteristics, such as different colors, a two-color magic effect can be presented. When only one jacquard comb is used to weave the missing pad structure, a twisted yarn structure feature appears. When two jacquard combs are used to weave the weft-inserted structure, the fabric presents a conventional woven structure. Therefore, the pattern effect design of the fabric is more flexible and changeable, and the pattern effect is richer. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 This is a comb yarn laying diagram of the basic surface layer structure according to Example 1 of the present invention;

[0021] Figure 2a This is a diagram of a jacquard comb yarn inlay according to Example 1 of the present invention;

[0022] Figure 2bThis is a diagram of a combined yarn laying of a Jacquard bar according to Example 1 of the present invention;

[0023] Figure 3 is a front weave diagram of a fabric according to Example 2 of the present invention;

[0024] Figure 4 is a front weave diagram of a fabric according to Example 3 of the present invention;

[0025] Figure 5 The reverse side structure diagram of the fabric according to Example 4 of the present invention;

[0026] Figure 6 It is a structural schematic diagram of a twisted heald product in the prior art.

[0027] 1 quilt hank, 2 hanks, 3 weft. DETAILED DESCRIPTION

[0028] The technical solution of the present invention is further described in detail below in conjunction with the embodiments and drawings.

[0029] Example 1

[0030] The present embodiment provides a method for manufacturing a warp knitted jacquard shoe upper having a woven heddle effect woven by a single jacquard warp knitting machine with 6 guide bars, and the shoe upper formed by the knitting.

[0031] It is knitted on a single jacquard warp knitting machine with 6 guide bars, and the order from the front needle bed to the back needle bed is: GB1, GB2, GB3, JB4.1, JB4.2, GB5. Among them, GB1, GB2, GB5 guide bars act on the front needle bed, GB3, GB6, GB7 guide bars act on the back needle bed, and JB4.1 and JB4.2 act on the front and back needle beds.

[0032] The specific weaving process includes the following steps: the yarn lagging structure of each comb bar is as follows: Figure 1 As shown,

[0033] Weaving basic surface layer structure: it is woven by GB1, GB2 and GB5; GB1 inserts the first yarn in a 1-through-1-empty manner to weave 0-0-0-0 / 2-2-2-2 / 0-0-0-0 / 4-4-4-4 / 2-2-2-2 / 4-4-4-4 / / variable weft insertion structure; GB2 inserts the second yarn in a 1-through-1-empty manner to weave 4-4-4-4 / 2-2-2-2 / 4-4-4-4 / 0-0-0-0-0 / 2-2-2-2 / 0-0-0-0 / / variable weft insertion structure, GB5 inserts the third yarn in a full-through manner to weave 1-0-0-0 / 0-1-1-1 / / chain structure;

[0034] Braided imitation twisted warp jacquard layer structure: it is woven by JB4.1 and JB4.2. JB4.1 is fully penetrated with the fourth yarn to weave a pad-less structure 1-1-1-1 / 1-1-1-1 / / . JB4.2 is fully penetrated with the fifth yarn to weave a pad-less structure 1-1-1-1 / 1-1-1-1 / / .

[0035] Knitting basic bottom structure: knitted by comb bar GB3. GB3 inserts the sixth yarn in a full-threading manner to knit a chain structure 1-1-1-0 / 0-0-0-1 / / .

[0036] The jacquard weave of the woven fabric is as follows: Figure 2b As shown, at this time, the fourth yarn and the fifth yarn overlap in the pad-less tissue area. When the fourth yarn and the fifth yarn have different colors, the area can have a two-color magic effect, and the pattern effect of the product is similar to the pattern effect of the woven heddle product. The positive tissue of the product effect can refer to Figure 3 or Figure 4 ; The structural effect of woven heald products is as follows Figure 6 As shown, it comprises 1 quilt yarn, 2 hanks, and 3 weft yarns. The warp knitted jacquard fabric of this embodiment has the pattern effect of woven hank products, while retaining the dimensional stability and strong wrapping characteristics of warp knitted products, and the coils are not easy to fall apart and have excellent durability.

[0037] In this embodiment, the first, second and third yarns are 150D polyester high elastic yarns; the third and fourth yarns are 150D cationic polyester yarns; the fifth yarn is 150D nylon yarn; the sixth and seventh yarns are 150D polyester high elastic yarns. After dyeing, the fourth yarn and the fifth yarn have different colors, which can present a two-color magic effect.

[0038] The shoe upper of this embodiment formed by the above-mentioned manufacturing method includes a basic surface layer structure formed by a variable weft insertion structure and a chain structure woven by a common comb bar acting on the front needle bed, an imitation twisted warp jacquard layer structure formed by a missing pad structure woven by a jacquard comb bar acting on the front and rear needle beds, and a basic bottom layer structure formed by a chain structure woven by a common comb bar acting on the rear needle bed, wherein the chain structure yarns of the basic surface layer structure and the chain structure yarns of the basic bottom layer are tied to each other to prevent fabric delamination, thereby further improving the stability of the shoe upper.

[0039] Example 2

[0040] This embodiment is an extended embodiment of Embodiment 1, and its difference from Embodiment 1 lies in the configuration of the jacquard bar. In this embodiment, the imitation twisted warp jacquard layer structure is woven: it is woven by JB4.1 and JB4.2, JB4.1 inserts the fourth yarn in a full-threading manner to weave the weft insertion structure 0-0-0-0 / 1-1-1-1, and JB4.2 inserts the fifth yarn in a full-threading manner to weave the missing pad structure 1-1-1-1 / 1-1-1-1 / / ; the rest of the weaving structure is the same as that of Embodiment 1. At this time, the imitation twisted warp jacquard layer structure of the fabric is formed by the missing pad structure of the jacquard bar JB4.2, which presents a monochrome imitation twisted warp jacquard effect, and the inlay yarn structure of the jacquard bar JB4.1 is as shown in FIG. Figure 2a As shown, the fabric structure diagram is as follows Figure 3 shown.

[0041] Example 3

[0042] This embodiment is another extended embodiment of Embodiment 1, and its difference from Embodiment 1 lies in the configuration of the jacquard bar. In this embodiment, the woven imitation twisted warp jacquard layer structure is woven by JB4.1 and JB4.2. JB4.1 inserts the fourth yarn in a full-threading manner to weave a missing pad structure 1-1-1-1 / 1-1-1-1 / / , and JB4.2 inserts the fifth yarn in a full-threading manner to weave a weft insertion structure 0-0-0-0 / 1-1-1-1; the rest of the weaving structure is the same as that of Embodiment 1. At this time, the imitation twisted warp jacquard layer structure of the fabric is formed by the missing pad structure of the jacquard bar JB4.1, which presents a monochrome imitation twisted warp jacquard effect, and the inlay yarn structure of the jacquard bar JB4.2 is as follows: Figure 2a As shown, the fabric structure diagram is as follows Figure 4 shown.

[0043] Although the imitation twisted warp jacquard effects of Examples 2 and 3 are both monochrome patterns, their imitation twisted warp jacquard directions are different. The inlay yarn structures of Examples 1, 2, and 3 can be changed on the same piece of fabric to achieve an imitation twisted warp jacquard with a two-color magic effect, or a monochrome imitation twisted warp jacquard can be formed to enrich the pattern effect of the shoe upper.

[0044] In addition, when both the jacquard bars JB4.1 and JB4.2 weave the weft-inserted fabric, the imitation twisted warp jacquard layer is hidden, presenting a conventional imitation woven fabric structure. Therefore, when the inlay yarn fabric of the jacquard bar is prepared according to the design requirements, a richer pattern effect can be presented.

[0045] Example 4

[0046] The present embodiment provides a method for manufacturing a warp knitted jacquard shoe upper having a woven heddle effect woven by a single jacquard warp knitting machine consisting of 8 guide bars, and the shoe upper formed by the knitting.

[0047] It is knitted on a single jacquard warp knitting machine with 8 guide bars, and the order from the front needle bed to the back needle bed is: GB1, GB2, GB3, JB4.1, JB4.2, GB5, GB6, GB7. Among them, GB1, GB2, GB5 guide bars act on the front needle bed, GB3, GB6, GB7 guide bars act on the back needle bed, and JB4.1 and JB4.2 act on the front and back needle beds.

[0048] During the weaving process, the method for making the basic surface layer structure and the twisted warp jacquard layer structure is the same as that of Example 1, and the difference from Example 1 is the weaving of the basic bottom layer structure, specifically:

[0049] The basic bottom layer structure is woven by the comb bars GB3, GB6, and GB7. GB3 inserts the sixth yarn in a full-threading manner to weave a chain weave structure 1-1-1-0 / 0-0-0-1 / / , GB6 inserts the seventh yarn in a full-threading manner to weave a structure 1-1-1-0 / 1-1-2-3 / / , and GB7 inserts the eighth yarn in a full-threading manner to weave a structure 1-1-1-2 / 1-1-1-0 / / . When both jacquard comb bars are in the process of padding the missing pad structure, the fabric structure on the reverse side is as follows: Figure 5 The addition of the inlay yarn structure of the comb bars GB6 and GB7 can further stabilize the fabric structure and improve the stability of the product.

[0050] The first yarn, the second yarn and the third yarn in this embodiment are 150D polyester high elastic yarn; the third yarn and the fourth yarn are 100D cationic polyester yarn; the fifth yarn is 100D nylon yarn; the sixth yarn and the seventh yarn are 100D polyester high elastic yarn.

[0051] In the above embodiment, the yarn characteristics of the fourth yarn and the fifth yarn are mainly manifested in different types of yarns. When different dyeing processes are used, they can present different colors, thereby forming a two-color magical imitation warp jacquard effect or a single-color magical imitation warp jacquard effect by controlling the yarn padding structure of the jacquard comb. In addition, the yarn characteristics of the fourth yarn and the fifth yarn can also be different in yarn color, that is, when colored yarns are used for weaving, the four yarns and the fifth yarns have different colors to achieve a two-color magical effect; in addition, the yarn characteristics can also be different gloss of the yarns, for example, the fourth yarn is a colored yarn, the fifth yarn is a matte yarn, or the yarn thickness is different, for example, the fourth yarn is 150D, the fifth yarn is 100D, etc. In addition, it is worth noting that the characteristics of the fourth yarn and the fifth yarn can be not only one characteristic difference, but also two or more characteristics, including but not limited to the difference in any combination of the above characteristics, so as to achieve different magical effects.

[0052] The shoe upper of this embodiment formed by the above-mentioned manufacturing method comprises a surface layer, a bottom layer and a jacquard layer located between the surface layer and the bottom layer. Since the yarn types of the surface layer, the bottom layer and the jacquard layer are different, and the types of the two yarns of the jacquard layer are also different, their dyeing processes are different. After dyeing treatment, an imitation woven jacquard warp knitted fabric with a two-color twisted heald effect is formed.

[0053] The above are only preferred embodiments of the present invention, but do not limit the patent scope of the present invention. Although the present invention is described in detail with reference to the above embodiments, those skilled in the art can still modify the technical solutions recorded in the above embodiments, or replace some of the technical features with equivalent ones. Any equivalent structure made by using the contents of the present invention specification, directly or indirectly used in other related technical fields, is also within the scope of patent protection of the present invention.

Claims

1. A method for making a warp knitted jacquard upper with a woven twisted heald effect, characterized in that: The method selects filament or staple yarn and weaves it on a jacquard warp knitting machine including at least 6 combing bars, selects a modified weft-inserting structure and a chain-knitting structure of a common combing bar used for a front needle bed as a basic surface layer structure, respectively forming a twisted warp structure and a weft yarn structure of a twisted heddle shuttle fabric; selects a missing-pad structure of a jacquard combing bar used for front and rear needle beds to jacquard the basic structure, forming a twisted warp structure of a twisted heddle fabric; selects a chain-knitting structure of a common combing bar used for a rear needle bed to form a basic bottom structure; and the common combing bar that acts on the front needle bed to form the chain-knitting structure is arranged on the warp knitting machine in front of the common combing bar that acts on the rear needle bed to form the chain-knitting structure, so that the yarns of the chain-knitting structure acting on the front and rear needle beds are bound to each other to avoid fabric delamination.

2. The method for making a warp knitted jacquard upper with a woven twisted heald effect according to claim 1, characterized in that: The method is to weave on a single jacquard warp knitting machine equipped with 6 combs, and the order of the combs from the front needle bed to the rear needle bed is: ordinary combs GB1, GB2, GB3, JB4.1, JB4.2, GB5; wherein the ordinary combs GB1, GB2, GB5 combs act on the front needle bed, the ordinary comb GB3 combs act on the rear needle bed, and the jacquard combs JB4.1 and JB4.2 act on the front and rear needle beds; the knitting process includes: Weaving basic surface layer structure: the structure is woven by ordinary combs GB1, GB2 and GB5, wherein GB1 inserts the first yarn in a 1-through-1-empty manner to weave 0-0-0-0-0 / 2-2-2-2 / 0-0-0-0 / 4-4-4-4 / 2-2-2-2 / 4-4-4-4 / / variable weft insertion structure, GB2 inserts the second yarn in a 1-through-1-empty manner to weave 4-4-4-4 / 2-2-2-2 / 4-4-4-4 / 0-0-0-0-0 / 2-2-2-2 / 0-0-0-0 / / variable weft insertion structure, GB5 inserts the third yarn in a full-through manner to weave 1-0-0-0 / 0-1-1-1 / / chain structure; Braided imitation twisted warp jacquard layer structure: the structure is braided by jacquard bars JB4.1 and JB4.

2. JB4.1 inserts the fourth yarn in a full-threading manner to weave a missing-pad structure 1-1-1-1 / 1-1-1-1 / / and / or JB4.2 inserts the fifth yarn in a full-threading manner to weave a missing-pad structure 1-1-1-1 / 1-1-1-1 / / ; Weaving basic bottom structure: It is woven by ordinary comb GB3. GB3 is fully threaded with the sixth yarn to weave a chain structure of 1-1-1-0 / 0-0-0-1 / / .

3. The method for making a warp knitted jacquard upper with a woven twisted heald effect according to claim 1, characterized in that: The method comprises the following steps: weaving is performed on a single jacquard warp knitting machine equipped with 8 comb bars, wherein the order of the comb bars from the front needle bed to the rear needle bed is: ordinary comb bars GB1, GB2, GB3, JB4.1, JB4.2, GB5, GB6, GB7, wherein ordinary comb bars GB1, GB2, GB5 act on the front needle bed to weave a basic surface layer structure; ordinary comb bars GB3, GB6, GB7 act on the rear needle bed to weave a basic bottom layer structure; jacquard comb bars JB4.1 and JB4.2 act on the front and rear needle beds to weave a jacquard layer structure of imitation twisted warp.

4. The method for making a warp knitted jacquard upper with a woven twisted heald effect according to claim 3, characterized in that: The weaving method of ordinary combs GB6 and GB7 is: GB6 inserts the seventh yarn in a full-threading manner to weave 1-1-1-0 / 1-1-2-3 / / warp plain structure, and GB7 inserts the eighth yarn in a full-threading manner to weave 1-1-1-2 / 1-1-1-0 / / warp plain structure.

5. The method for making a warp knitted jacquard upper with a woven twisted heald effect according to claim 2, characterized in that: JB4.1 inserts the fourth yarn in a full-threading manner to weave a pad-missing structure 1-1-1-1 / 1-1-1-1 / / . JB4.2 inserts the fifth yarn in a full-threading manner to weave a weft-inserted structure 0-0-0-0 / 1-1-1-1 / / .

6. The method for making a warp knitted jacquard upper with a woven twisted heald effect according to claim 2, characterized in that: JB4.1 inserts the fourth yarn in a full-threading manner to weave a weft-inserted structure 0-0-0-0 / 1-1-1-1 / / . JB4.2 inserts the fifth yarn in a full-threading manner to weave a weft-missing structure 1-1-1-1 / 1-1-1-1 / / .

7. The method for making a warp knitted jacquard shoe upper with a woven twisted heddle effect according to claim 2, characterized in that: The fourth yarn and the fifth yarn have different yarn characteristics.

8. The method for making a warp knitted jacquard upper with a woven twisted heddle effect according to claim 7, characterized in that: The fourth yarn and the fifth yarn are different in at least one of color, fineness or gloss.

9. The method for making a warp knitted jacquard shoe upper with a woven twisted heald effect according to claim 8, characterized in that: The fourth yarn is a cationic polyester yarn, the fifth yarn is a nylon yarn, and the remaining yarns are polyester yarns.

10. A shoe upper, characterized in that: The upper is made by the method for making a warp knitted jacquard upper with a woven twisted heald effect as described in claim 1; it includes a basic surface layer structure formed by a variable weft insertion structure and a chain structure woven by a common comb bar acting on the front needle bed, an imitation twisted warp jacquard layer structure formed by a missing pad structure woven by a jacquard comb bar acting on the front and rear needle beds, and a basic bottom layer structure formed by a chain structure woven by a common comb bar acting on the rear needle bed, wherein the chain structure yarns of the basic surface layer structure and the chain structure yarns of the basic bottom layer are bound to each other to prevent the fabric from delamination.

Images