CN115961409A - Three-dimensional woven fabric with looped surface and weaving method thereof - Google Patents
Three-dimensional woven fabric with looped surface and weaving method thereof Download PDFInfo
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- CN115961409A CN115961409A CN202211354788.7A CN202211354788A CN115961409A CN 115961409 A CN115961409 A CN 115961409A CN 202211354788 A CN202211354788 A CN 202211354788A CN 115961409 A CN115961409 A CN 115961409A
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- Y02P70/62—Manufacturing or production processes characterised by the final manufactured product related technologies for production or treatment of textile or flexible materials or products thereof, including footwear
Abstract
The application discloses three-dimensional woven fabric with looped surfaces and a weaving method thereof, the requirements of the density, the thickness and the looped density of a prefabricated body are met by arranging the layer number of a layer connection structure and the layer number of a looped structure, clear openings are formed by the movement of warp yarns and looped yarns, and weft yarns can be automatically and continuously introduced conveniently. The fabric comprises a layer connection structure and a looped structure penetrating or not penetrating the layer connection structure, and is integrally and continuously woven and formed. The three-dimensional woven fabric with looped surfaces has the advantages of various organizational structures, various fiber types, large control range of the size of a prefabricated body, strong designability, controllable and adjustable looped height and looped density, good integrity, convenient operation of a weaving process, suitability for continuous weaving and the like. The material compositely reinforced by the fabric has the advantages of high modulus, high strength, high interlaminar toughness, high interlaminar strength, high bearing performance and the like, and can be widely applied to the fields of aviation, aerospace, automobiles, marine transportation, power generation, petroleum and the like.
Description
Technical Field
The invention belongs to the technical field of three-dimensional fabric weaving, and particularly relates to a three-dimensional woven fabric with looped surfaces and a weaving method thereof.
Background
The surface looped three-dimensional woven fabric is formed by adopting high-performance fibers through an integral weaving technology, and Z-direction reinforced looped loops are formed on the surface of the fabric. Warp yarns and weft yarns in the three-dimensional woven preform are interwoven or arranged at 90 degrees in a plane, so that the in-plane performance of the composite material is improved, the yarn bundles penetrating through the thickness direction of the structure simultaneously reduce the layering phenomenon, the interlaminar shear strength of the material is increased, and the impact resistance and the bending fatigue performance of the material are improved. The three-dimensional woven fabric with looped surfaces is used as a reinforcing material, and an anchoring structure is formed between layers in a mode of looping partial fibers on the basis of the three-dimensional woven fabric, so that the interlayer stretching and interlayer shearing performance of the composite material are improved, and the reinforcement of the composite material between the layers is realized. The loop material has the advantages of excellent in-plane performance, low cost, high efficiency, small in-plane performance loss and the like, can meet the interlaminar shear and toughness performance required by structural parts, achieves the aim of interlaminar toughening, and can be widely applied to the fields of automobiles, aerospace, mechanical manufacturing and the like in the future.
Chinese patent CN1804174B describes a method for weaving Z-direction looped fabric, which comprises the steps of warp pretreatment, warping, preparation before weaving, sample unloading and shaping, etc., the fibers used by the warp and weft are the same fiber, and the pretreatment is needed before weaving, the Z-direction looped fiber bundle of the fabric can be used to connect multiple layers of three-dimensional fabrics, and the fabric layers are tightly connected by a needling process, so that the prefabricated body has an integral reinforced structure. The fabric has the defects of single structure, single fiber type and single connecting form of looped yarns, and is not favorable for meeting the wide application requirements of different fields.
Chinese patent CN213013325U introduces a three-dimensional knitted fabric with a terry structure on the surface layer, which realizes three-dimensional seven-direction three-dimensional knitting based on a three-dimensional four-step knitting method, forms a plump apparent structure through X-axis yarns and Y-axis yarns, and forms a precise net-like structure with multi-direction fibers with knitting yarns, so that continuous knitting cannot be realized, and the wide application requirements of different fields are difficult to meet.
Disclosure of Invention
The invention aims to solve the problems that the conventional looped fabric is single in structure, single in fiber type and single in connection mode, cannot realize continuous weaving and is difficult to meet the wide application requirements of different fields, and provides a three-dimensional woven fabric with looped surfaces and a weaving method thereof.
In order to achieve the aim of the invention, the invention discloses a method for weaving a three-dimensional woven fabric with looped surfaces, which comprises the following steps:
step 1, arranging the number of layers of warp yarns of the fabric according to the requirements of target density, thickness, looping height and looping density of the fabric to form a layer A and a layer B of warp yarns of a layer-connecting weave, and a layer C and a layer D of looped yarns of a looped weave;
step 2, enabling each warp yarn of each layer of the layer connection weave to pass through a corresponding warp yarn tensioner to control the tension of the warp yarns;
step 3, enabling each warp yarn of each layer of the looped tissue to penetrate through a looped yarn warp beam so as to control the tension of the looped yarns and the active let-off of the looped yarns;
step 4, respectively threading the warp yarns into corresponding heddles and reed teeth according to the arrangement of the layer number of the layer connection weave and the layer number of the looped weave warp yarns;
step 5, adjusting the warp tension of the layer connection structure one by one to enable the opening to be clear;
step 6, adjusting the warp tension of the looped tissue one by one and enabling the looped yarn warp beam to be in a zero position state so that the opening of the looped yarn warp beam is clear;
step 7, according to the preset requirement of the layer connection structure, the heald lifting device starts to circularly move from bottom to top or from top to bottom to drive the corresponding warp yarns to circularly move from bottom to top or from top to bottom, and each movement forms an opening with equal height; according to the preset looping tissue requirement, the heald lifting device drives the corresponding looping yarn to move;
step 8, after forming an opening each time, leading in weft yarns by a weft insertion device, after completing weft insertion, horizontally moving the weft yarns to a fabric fell by a beating-up device according to a preset loopy tissue requirement to complete long beating-up or short beating-up, beating the weft yarns into the fabric fell to complete beating-up, and forming a loopy tissue on the surface of the fabric;
and 9, after beating-up is finished, drawing the fabric to a forming direction for a corresponding distance according to the weft density requirement of the fabric, and after drawing is finished, carrying out next motion cycle until the weaving of the whole fabric is finished.
Furthermore, the layer connection structure comprises an orthogonal three-way structure, a shallow cross-bending connection structure, a shallow cross-direct connection structure, a deep cross-bending connection structure, a deep cross-direct connection structure, a hollow interlayer and a combined structure of the hollow interlayer; the number of layers of the looped tissue spanning the layer-connecting tissue is not less than one.
Furthermore, the loop height of the fabric loop tissue is 0-1000 mm.
Further, the looped fabric is a single-sided looped fabric or a double-sided looped fabric.
Further, the fabric loop weave is looped in the warp direction or in the weft direction.
Further, the number of the weft yarns which can be spanned by the looped fabric tissue along the warp direction is not less than 1.
Further, the number of warp yarns which can be spanned by the looped fabric structure along the weft direction is not less than 1.
Furthermore, the number of the weft yarns spaced between every two circles of the fabric looped tissue along the warp direction is not less than 1.
Furthermore, the number of warp yarns spaced between every two loops of the fabric looped tissue along the weft direction is not less than 1.
In order to achieve the purpose of the invention, the invention also discloses a three-dimensional woven fabric with looped surfaces, which comprises a layer connection structure formed by three-dimensionally weaving warp yarns and weft yarns and a looped structure penetrating or not penetrating the layer connection structure, can use one high-performance fiber, can also use a mixture of a plurality of high-performance fibers, and is integrally and continuously woven and formed.
Compared with the prior art, the invention has the remarkable improvements that: the three-dimensional woven fabric with looped surfaces obtained by the method comprises a layer-connecting tissue and a looped tissue penetrating or not penetrating the layer-connecting tissue, and is integrally and continuously woven and formed; in weaving the in-process, arrange through the range of range number of layer company, the range of range number of looped pile is organized, reach the density of preform, thickness, looped pile height, looped pile density requirement, form clear opening through warp and looped pile yarn motion, the automatic continuous introduction of the woof of being convenient for, it is various to have organizational structure, the fibre kind is various, preform size control range is big, designability is strong, looped pile height and looped pile density are controllable adjustable, the wholeness is good, weaving process convenient operation, be suitable for advantages such as serialization weaving. The material compositely reinforced by the fabric has the advantages of high modulus, high strength, high interlaminar toughness, high interlaminar strength, high bearing performance and the like, and can be widely applied to the fields of aviation, aerospace, automobiles, marine transportation, power generation, petroleum and the like.
To more clearly illustrate the functional characteristics and structural parameters of the present invention, the following description is given with reference to the accompanying drawings and the detailed description.
Drawings
The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this application, illustrate embodiment(s) of the invention and together with the description serve to explain the invention without limiting the invention. In the drawings:
FIG. 1 is a schematic representation of a surface-looped, three-dimensional woven fabric looped along a warp direction single face according to a first embodiment of the present invention;
FIG. 2 is a schematic representation of a second embodiment of a surface-looped, three-dimensional woven fabric looped along the warp direction;
FIG. 3 is a schematic flow chart of a method for weaving a three-dimensional woven fabric with loops on the surface.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments; all other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
As shown in fig. 3, a method for weaving a three-dimensional woven fabric with loops on the surface comprises the following steps:
step 1, arranging the number of layers of warp yarns of the fabric according to the requirements of target density, thickness, looping height and looping density of the fabric to form a layer A and a layer B of warp yarns of a layer-connecting weave and a layer C and a layer D of looped yarns of a looped weave;
step 2, enabling each layer of warp yarns of the layer connection weave to pass through a corresponding warp yarn tensioner to control the tension of the warp yarns;
step 3, enabling each warp yarn of each layer of the looped tissue to penetrate through a looped yarn warp beam so as to control the tension of the looped yarns and the active let-off of the looped yarns;
step 4, respectively threading the warp yarns into corresponding heddles and reed teeth according to the arrangement of the layer number of the layer connection weave and the layer number of the looped weave warp yarns;
step 5, adjusting the warp tension of the layer connection structure one by one to enable the opening to be clear;
step 6, adjusting the warp tension of the looped tissue one by one and enabling the looped yarn warp beam to be in a zero position state so that the opening of the looped yarn warp beam is clear;
step 7, according to the preset requirement of the layer connection structure, the heald lifting device starts to circularly move from bottom to top or from top to bottom to drive the corresponding warp yarns to circularly move from bottom to top or from top to bottom, and each movement forms an opening with equal height; according to the preset looping tissue requirement, the heald lifting device drives the corresponding looping yarn to move;
step 8, after an opening is formed each time, weft yarns are introduced by a weft insertion device, after weft insertion is completed, the beating-up device horizontally moves to a fabric weaving opening according to the preset looping tissue requirement to complete long beating-up or short beating-up, the weft yarns are beaten into the weaving opening to complete beating-up, and looping tissues are formed on the surface of the fabric;
and 9, after beating-up is finished, drawing the fabric to a forming direction for a corresponding distance according to the weft density requirement of the fabric, and after drawing is finished, carrying out next motion cycle until the weaving of the whole fabric is finished.
Example 1
As shown in fig. 1, example 1 provides a three-dimensional woven fabric with looped surfaces, which comprises a layer connection structure formed by three-dimensionally weaving warp yarns and weft yarns and a looped structure formed by single-sided looping along a warp direction, and is integrally and continuously woven and formed, and interlayer connection and yarn continuity are realized.
The layer connection structure can be in an orthogonal three-way, shallow cross-bend connection, shallow cross-direct connection, deep cross-bend connection, deep cross-direct connection, twill, satin, hollow interlayer and combined structure, and the embodiment is represented by a shallow cross-direct connection and hollow interlayer combined structure.
The three-dimensional woven fabric with looped surfaces can be woven by using one high-performance fiber or by mixing multiple high-performance fibers. In this embodiment, two fiber materials, i.e., glass fiber and carbon fiber, are selected as representatives, wherein the carbon fiber is selected for the layer-connecting structure, and the glass fiber is selected for the looped structure.
The looped tissue may penetrate or not penetrate the laminated tissue, and in this embodiment, the number of layers of the looped tissue spanning the laminated tissue is 3, taking the non-penetrating laminated tissue as an example.
The looped tissue may be single-sided looped or double-sided looped, and this embodiment takes single-sided looped as an example.
The looped tissue can be looped along the warp direction and also looped along the weft direction, and the looped tissue is looped along the warp direction in the embodiment.
The number of the weft yarns which can be crossed by the loop weave along the warp direction loop is not less than 1, and the embodiment takes the crossing of 2 weft yarns as an example.
The number of the weft yarns spaced between every two loops of the looped tissue along the warp direction is not less than 1, and the embodiment takes the weft yarns spaced by 1 as an example.
The weaving method of the variable-density three-dimensional preform of the embodiment comprises the following steps of:
(1) Arranging the number of the layers of the warp yarns of the fabric according to the requirements of the density, the thickness, the loop height and the loop density of the fabric to form 11 layers and 200 rows of warp yarns of a layer-connecting structure and 1 layer and 200 rows of loop yarns of a loop structure;
(2) Passing each warp yarn of each layer of the layer connection weave through a corresponding warp yarn tension control device to control the tension of the warp yarn;
(3) Enabling each warp yarn of each layer of looped tissue to pass through a looped yarn control device so as to control the tension of looped yarns and the active let-off of the looped yarns;
(4) Respectively threading the warp yarns into corresponding heddles and reed teeth according to the arrangement of the number of warp yarn layers of the layer connection weave and the looping weave;
(5) Adjusting the warp tension of the layer-by-layer connection structure one by one to meet the weaving requirement;
(6) Adjusting the warp tension of the looped tissue one by one and enabling the looped yarn control device to be in an initial state so as to enable the looped yarn control device to meet weaving requirements;
(7) According to the requirement of the layer connection structure of the fabric, the shedding device starts to circularly move from bottom to top or from top to bottom to drive the corresponding warp yarns to circularly move from bottom to top or from top to bottom, and each movement forms an equal-height opening; according to the requirement of looping texture, the heald lifting device drives the corresponding looping yarn to move;
(9) After an opening is formed each time, a weft yarn is introduced by the weft insertion device, after weft insertion is completed, the beating-up device horizontally moves to a fabric fell according to the requirement of looped tissues to complete long beating-up or short beating-up, the weft yarn is beaten into the fabric fell to complete beating-up, and looped tissues are formed on the surface of the fabric;
(10) And after beating-up is finished, pulling the fabric to a certain distance in the forming direction according to the weft density requirement of the fabric, and after pulling is finished, carrying out next movement cycle until the weaving of the whole fabric is finished.
The requirement of the looping height can be met by adjusting the distance difference between long and short beating-ups according to different fabric requirements, the requirement of the looping tissue for penetrating through different layers of layer-connecting tissues can be met by adjusting the motion rule of the looping yarn, the requirement of the fabric thickness can be met by increasing or reducing the number of warp layers of the fabric, the requirement of the fabric density can be met by adjusting the weave structure, the yarn type, the yarn fineness, the ratio of the number of yarn strands, the warp density, the weft density and the like, the requirement of the width of the fabric can be met by increasing or reducing the number of columns of fabric warp yarns, and the requirement of the weaving length of the fabric can be met by increasing or reducing the total number of weft yarns woven by the fabric.
Example 2
As shown in fig. 2, example 2 provides a three-dimensional woven fabric with looped surfaces, which comprises a layer connection structure formed by three-dimensionally weaving warp yarns and weft yarns and a looped structure formed by double-sided looping along the warp direction, and is integrally and continuously woven and formed, and connected layers and yarns are continuous.
The layer connection structure can be an orthogonal three-way, shallow cross-bend connection, shallow cross-direct connection, deep cross-bend connection, deep cross-direct connection, twill, satin, hollow sandwich and combination structure, and the embodiment is represented by a shallow cross-bend connection and shallow cross-direct connection combination structure.
The three-dimensional woven fabric with looped surfaces can be woven by using one high-performance fiber or by mixing multiple high-performance fibers. In this embodiment, two fiber materials, i.e., glass fiber and carbon fiber, are selected as representatives, wherein the carbon fiber is selected for the layer-connecting structure, and the glass fiber is selected for the looped structure.
The loop tissue may penetrate or not penetrate the layer connection tissue, and the embodiment takes the example of penetrating the layer connection tissue.
The looping tissue can be single-sided looping or double-sided looping, and double-sided looping is taken as an example in the embodiment.
The looped tissue can be looped along the warp direction and also looped along the weft direction, and the looped tissue is looped along the warp direction in the embodiment.
The number of warp yarns which can be spanned by the looping structure along the warp direction looping is not less than 1, and the embodiment takes spanning 3 weft yarns as an example.
The number of the weft yarns spaced between every two circles of the looped tissue along the warp direction is not less than 1, and the embodiment takes the weft yarns spaced by 2 as an example.
The weaving method of the variable-density three-dimensional preform of the embodiment comprises the following steps:
(1) Arranging the number of layers of the warp yarns of the fabric according to the requirements of the fabric density, the thickness, the loop height and the loop density to form 17 layers and 200 rows of warp yarns of a layer-connecting weave and 1 layer and 200 rows of loop yarns of a loop weave;
(2) Passing each warp yarn of each layer of the layer connection weave through a corresponding warp yarn tension control device to control the tension of the warp yarn;
(3) Passing each warp yarn of each layer of the looped tissue through a looped yarn control device to control the tension of the looped yarn and the active let-off of the looped yarn;
(4) Respectively threading the warp yarns into corresponding heddles and reed teeth according to the arrangement of the number of warp yarn layers of the layer connection weave and the looping weave;
(5) Adjusting the warp tension of the layer-by-layer connection structure one by one to meet the weaving requirement;
(6) Adjusting the warp tension of the looped tissue one by one and enabling the looped yarn control device to be in an initial state so as to enable the looped yarn control device to meet weaving requirements;
(7) According to the requirement of the layer connection structure of the fabric, the shedding device starts to circularly move from bottom to top or from top to bottom to drive the corresponding warp yarns to circularly move from bottom to top or from top to bottom, and each movement forms an equal-height opening; according to the requirement of the looping structure, the heald lifting device drives the corresponding looping yarn to move;
(9) After an opening is formed each time, a weft yarn is introduced by a weft insertion device, after weft insertion is completed, a beating-up device horizontally moves to a fabric fell according to the requirement of a looped tissue to complete long beating-up or short beating-up, the weft yarn is beaten into the fabric fell to complete beating-up, and the looped tissue is formed on the surface of the fabric;
(10) And after beating-up is finished, pulling the fabric to a forming direction for a certain distance according to the weft density requirement of the fabric, and after pulling is finished, carrying out next motion cycle until the weaving of the whole fabric is finished.
According to different requirements of the fabric, the requirement that the looped tissue penetrates through different layers of the layer-connecting tissue can be met by adjusting the motion rule of the looped yarns, the requirement on the thickness of the fabric can be met by increasing or reducing the number of layers of the warp yarns of the fabric, the requirement on the density of the fabric can be met by adjusting the weave structure, the type of the yarns, the fineness of the yarns, the ratio of the number of yarn strands, the warp density, the weft density and the like, the requirement on the width of the fabric can be met by increasing or reducing the number of rows of warp yarns of the fabric, and the requirement on the weaving length of the fabric can be met by increasing or reducing the total number of weft yarns woven by the fabric.
The three-dimensional woven fabric with looped surfaces obtained by the method is integrally and continuously woven and formed, is connected among fabric layers, and has the advantages of various organizational structures, various fiber types, large fabric size control range, strong designability, compact structure, controllable and adjustable looped height and looped density, good integrity, simple weaving process operation, suitability for continuous weaving and the like. The variable density material compositely reinforced by the fabric has the advantages of low thermal expansion coefficient, high heat resistance, high specific strength, high specific modulus, impact resistance, wear resistance, ageing resistance and the like, and can be widely applied to the fields of automobiles, aviation, spaceflight, machine manufacturing, petroleum and the like.
It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (10)
1. A method for weaving a three-dimensional woven fabric with looped surfaces is characterized by comprising the following steps:
step 1, arranging the number of layers of warp yarns of the fabric according to the requirements of target density, thickness, looping height and looping density of the fabric to form a layer A and a layer B of warp yarns of a layer-connecting weave and a layer C and a layer D of looped yarns of a looped weave;
step 2, enabling each layer of warp yarns of the layer connection weave to pass through a corresponding warp yarn tensioner to control the tension of the warp yarns;
step 3, enabling each warp yarn of each layer of the looped tissue to penetrate through a looped yarn warp beam so as to control the tension of the looped yarns and the active let-off of the looped yarns;
step 4, respectively threading warp yarns into corresponding heddles and reed dents according to the arrangement of the layer number of the layer connection weave and the layer number of the looped weave warp yarns;
step 5, adjusting the warp tension of the layer connection structure one by one to enable the opening to be clear;
step 6, adjusting the warp tension of the looped tissue one by one and enabling the looped yarn warp beam to be in a zero position state so that the opening of the looped yarn warp beam is clear;
step 7, according to the preset requirements of the layer connection organization, the heald lifting device starts to circularly move from bottom to top or from top to bottom to drive the corresponding warp yarns to circularly move from bottom to top or from top to bottom, and each movement forms an equal-height opening; according to the preset looping tissue requirement, the heald lifting device drives the corresponding looping yarn to move;
step 8, after an opening is formed each time, weft yarns are introduced by a weft insertion device, after weft insertion is completed, the beating-up device horizontally moves to a fabric weaving opening according to the preset looping tissue requirement to complete long beating-up or short beating-up, the weft yarns are beaten into the weaving opening to complete beating-up, and looping tissues are formed on the surface of the fabric;
and 9, after beating-up is finished, drawing the fabric to a forming direction for a corresponding distance according to the weft density requirement of the fabric, and after drawing is finished, carrying out next motion cycle until the weaving of the whole fabric is finished.
2. The method for weaving a three-dimensional woven fabric with looped surfaces according to claim 1, wherein the layer-connecting structure comprises an orthorhombic three-dimensional structure, a shallow cross-bend structure, a shallow cross-direct structure, a deep cross-bend structure, a deep cross-direct structure, a hollow interlayer and a combined structure between the orthorhombic three-dimensional structure and the shallow cross-bend structure; the number of layers of the looped tissue spanning layer-by-layer tissue is not less than one.
3. The method for weaving a surface-looped three-dimensional woven fabric according to claim 1, wherein the loop height of the looped weave of the fabric is 0 to 1000mm.
4. The method for weaving a surface-looped three-dimensional woven fabric according to claim 1, wherein the fabric looped structure is a single-sided looped structure or a double-sided looped structure.
5. A method of weaving a surface-looped three-dimensional woven fabric according to claim 1, wherein said fabric loop weave is looped in a warp direction or in a weft direction.
6. A method of weaving a surface-looped three-dimensional woven fabric according to claim 1, wherein the number of weft yarns over which the fabric looped structure can span in the warp direction is not less than 1.
7. A method of weaving a surface-looped three-dimensional woven fabric according to claim 1, wherein the number of warp yarns over which the fabric loop weave can cross in the weft direction loop is not less than 1.
8. A method of weaving a surface-looped three-dimensional woven fabric according to claim 1, wherein the number of weft yarns spaced every two loops in the warp direction loop of said fabric loop weave is not less than 1.
9. A method of weaving a surface-looped three-dimensional woven fabric according to claim 1, wherein the number of warp yarns spaced every two loops of the looped fabric in the weft direction is not less than 1.
10. A three-dimensional woven fabric with looped surfaces, which is based on the weaving method of the three-dimensional woven fabric with looped surfaces as claimed in any one of claims 1 to 9, characterized in that the three-dimensional woven fabric comprises a layer connection structure formed by three-dimensionally weaving warp yarns and weft yarns and a looped structure penetrating or not penetrating the layer connection structure, and can be formed by integrally and continuously weaving one high-performance fiber or a mixture of multiple high-performance fibers.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211354788.7A CN115961409A (en) | 2022-11-01 | 2022-11-01 | Three-dimensional woven fabric with looped surface and weaving method thereof |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202211354788.7A CN115961409A (en) | 2022-11-01 | 2022-11-01 | Three-dimensional woven fabric with looped surface and weaving method thereof |
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| CN115961409A true CN115961409A (en) | 2023-04-14 |
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| CN202211354788.7A Pending CN115961409A (en) | 2022-11-01 | 2022-11-01 | Three-dimensional woven fabric with looped surface and weaving method thereof |
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