CN115386995A - Easily deformable multi-layer woven braid and weaving method thereof - Google Patents
Easily deformable multi-layer woven braid and weaving method thereof Download PDFInfo
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- CN115386995A CN115386995A CN202210914826.3A CN202210914826A CN115386995A CN 115386995 A CN115386995 A CN 115386995A CN 202210914826 A CN202210914826 A CN 202210914826A CN 115386995 A CN115386995 A CN 115386995A
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- D—TEXTILES; PAPER
- D03—WEAVING
- D03D—WOVEN FABRICS; METHODS OF WEAVING; LOOMS
- D03D11/00—Double or multi-ply fabrics not otherwise provided for
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- A—HUMAN NECESSITIES
- A42—HEADWEAR
- A42B—HATS; HEAD COVERINGS
- A42B3/00—Helmets; Helmet covers ; Other protective head coverings
- A42B3/04—Parts, details or accessories of helmets
- A42B3/10—Linings
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- D—TEXTILES; PAPER
- D03—WEAVING
- D03D—WOVEN FABRICS; METHODS OF WEAVING; LOOMS
- D03D1/00—Woven fabrics designed to make specified articles
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- D—TEXTILES; PAPER
- D03—WEAVING
- D03D—WOVEN FABRICS; METHODS OF WEAVING; LOOMS
- D03D13/00—Woven fabrics characterised by the special disposition of the warp or weft threads, e.g. with curved weft threads, with discontinuous warp threads, with diagonal warp or weft
- D03D13/008—Woven fabrics characterised by the special disposition of the warp or weft threads, e.g. with curved weft threads, with discontinuous warp threads, with diagonal warp or weft characterised by weave density or surface weight
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- D—TEXTILES; PAPER
- D03—WEAVING
- D03D—WOVEN FABRICS; METHODS OF WEAVING; LOOMS
- D03D15/00—Woven fabrics characterised by the material, structure or properties of the fibres, filaments, yarns, threads or other warp or weft elements used
- D03D15/20—Woven fabrics characterised by the material, structure or properties of the fibres, filaments, yarns, threads or other warp or weft elements used characterised by the material of the fibres or filaments constituting the yarns or threads
- D03D15/208—Woven fabrics characterised by the material, structure or properties of the fibres, filaments, yarns, threads or other warp or weft elements used characterised by the material of the fibres or filaments constituting the yarns or threads cellulose-based
- D03D15/225—Woven fabrics characterised by the material, structure or properties of the fibres, filaments, yarns, threads or other warp or weft elements used characterised by the material of the fibres or filaments constituting the yarns or threads cellulose-based artificial, e.g. viscose
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- D—TEXTILES; PAPER
- D03—WEAVING
- D03D—WOVEN FABRICS; METHODS OF WEAVING; LOOMS
- D03D15/00—Woven fabrics characterised by the material, structure or properties of the fibres, filaments, yarns, threads or other warp or weft elements used
- D03D15/20—Woven fabrics characterised by the material, structure or properties of the fibres, filaments, yarns, threads or other warp or weft elements used characterised by the material of the fibres or filaments constituting the yarns or threads
- D03D15/242—Woven fabrics characterised by the material, structure or properties of the fibres, filaments, yarns, threads or other warp or weft elements used characterised by the material of the fibres or filaments constituting the yarns or threads inorganic, e.g. basalt
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- D—TEXTILES; PAPER
- D03—WEAVING
- D03D—WOVEN FABRICS; METHODS OF WEAVING; LOOMS
- D03D15/00—Woven fabrics characterised by the material, structure or properties of the fibres, filaments, yarns, threads or other warp or weft elements used
- D03D15/20—Woven fabrics characterised by the material, structure or properties of the fibres, filaments, yarns, threads or other warp or weft elements used characterised by the material of the fibres or filaments constituting the yarns or threads
- D03D15/242—Woven fabrics characterised by the material, structure or properties of the fibres, filaments, yarns, threads or other warp or weft elements used characterised by the material of the fibres or filaments constituting the yarns or threads inorganic, e.g. basalt
- D03D15/267—Glass
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- D—TEXTILES; PAPER
- D03—WEAVING
- D03D—WOVEN FABRICS; METHODS OF WEAVING; LOOMS
- D03D15/00—Woven fabrics characterised by the material, structure or properties of the fibres, filaments, yarns, threads or other warp or weft elements used
- D03D15/20—Woven fabrics characterised by the material, structure or properties of the fibres, filaments, yarns, threads or other warp or weft elements used characterised by the material of the fibres or filaments constituting the yarns or threads
- D03D15/242—Woven fabrics characterised by the material, structure or properties of the fibres, filaments, yarns, threads or other warp or weft elements used characterised by the material of the fibres or filaments constituting the yarns or threads inorganic, e.g. basalt
- D03D15/275—Carbon fibres
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- D—TEXTILES; PAPER
- D03—WEAVING
- D03D—WOVEN FABRICS; METHODS OF WEAVING; LOOMS
- D03D15/00—Woven fabrics characterised by the material, structure or properties of the fibres, filaments, yarns, threads or other warp or weft elements used
- D03D15/20—Woven fabrics characterised by the material, structure or properties of the fibres, filaments, yarns, threads or other warp or weft elements used characterised by the material of the fibres or filaments constituting the yarns or threads
- D03D15/283—Woven fabrics characterised by the material, structure or properties of the fibres, filaments, yarns, threads or other warp or weft elements used characterised by the material of the fibres or filaments constituting the yarns or threads synthetic polymer-based, e.g. polyamide or polyester fibres
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
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- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
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- Y02E10/70—Wind energy
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Abstract
The invention provides an easily-deformable multilayer woven body, which comprises a plurality of warp yarn layers and weft yarn layers which are arranged at intervals, and binding yarns for fixing the warp yarns and the weft yarns; the warp yarns of the warp yarn layer and the weft yarns of the weft yarn layer are arranged perpendicular to each other, and the binding yarns form a binding structure which is wound in a bending mode at the intersection points of the warp yarns and the weft yarns. So set up, utilize the crooked winding of joint yarn in nodical department to realize binding to prevent that the warp and weft yarn from sliding, can provide the space for the bending of follow-up fabric simultaneously, and can not drag because of the bending, cause the secondary harm of yarn. The invention can effectively improve the capabilities of high thickness and high density of the braided body, is convenient for integrated weaving, can reduce the weight and the cost, and has remarkable practicability and economic value.
Description
Technical Field
The invention relates to the technical field of functional fabric weaving, in particular to an easily-deformed multi-layer woven fabric and a weaving method thereof.
Background
High-performance fiber fabrics are one of the textile composite materials which are receiving attention in recent years, and are widely applied to the fields of aerospace, military, automobiles, buildings and the like due to the advantages of good deformation performance, high strength, high modulus, good impact resistance, strong designability and the like.
The high-performance fiber and the woven material thereof show obvious advantages in the field of flight protection materials due to the advantages of light weight, high strength and the like, so that the helmet of the pilot of the new generation of fighters is mostly processed by adopting the high-performance fiber reinforced composite material. However, with the development of equipment, the application of high-performance fiber woven bodies to pilot helmets is facing more and more problems: (1) because the helmet shell is a three-quarter-like ellipsoidal thin shell, a single piece of two-dimensional woven fabric cannot be directly laid into the shape; (2) if a plurality of two-dimensional woven fabrics are spliced and laid in a shell shape, strength defects are caused at the spliced position; (3) the high-performance fiber is used as a main material of a helmet of a fighter aircraft pilot, and has poor surface compatibility and interface mechanical property, so that the subsequent resin composite molding effect is poor; (4) the high-performance fiber is brittle, expensive and has poor bending property, so that the weaving difficulty is high, the cost is high, and the industrial weaving forming technology is lacked in China at present.
For example, patent CN 201810103224.3 discloses a bulletproof helmet with a honeycomb barrier structure and a preparation method thereof, which sequentially comprises a honeycomb barrier layer, an intermediate rigid layer and an internal buffer layer from the outer surface to the inner surface of the helmet, wherein: the honeycomb barrier layer is formed by filling a hexagonal columnar ceramic micro-cylinder with a short carbon fiber composite material, the middle rigid layer is prepared by impregnating a carbon fiber two-dimensional woven fabric structure with a thermosetting resin matrix, and the inner buffer layer is formed by reinforcing a thermoplastic resin matrix by adopting a high-toughness fiber two-dimensional woven structure preform fabric structure. However, the two-dimensional woven fabric has a plain, twill or satin structure, and is laminated by a cutting technology, so that the method cannot realize integrated weaving and forming, and is difficult to highly adhere to the bending surface of the helmet or generate seams. The two-dimensional woven fabric structure is like the arrangement mode of the warp yarns and the weft yarns in figure 6, the warp yarns and the weft yarns are mutually interpenetrated to improve the combination firmness, but on one hand, the warp yarns and the weft yarns need to be continuously bent and crossed, and the weaving mode is not beneficial to the weaving of special fibers with stronger rigidity; on the other hand, the combination firmness of the warp and the weft is too high, and the yarn at the bending part is easy to cause secondary damage during bending deformation, so that the special fiber is not suitable for weaving special fibers needing complete deformation.
Therefore, the system develops the research on high-performance fiber surface, interface characteristics and single/multi-component braided body structure, and the current urgent need is to develop a braided body which is light in weight, low in cost and capable of meeting the requirement of wrapping the helmet shell in three-dimensional forming.
In view of the above, there is a need for an improved easily deformable multi-layer woven fabric and a weaving method thereof to solve the above problems.
Disclosure of Invention
In order to overcome the defects of the prior art, the invention aims to provide an easily-deformed multi-layer woven braid and a weaving method thereof, and solves the problems that the braid is not easy to be attached to a mould when a plurality of special braids are used for covering and wrapping, and partial yarns in the braid are damaged even after the shape of the special braids is changed under the mechanical action, so that the strength of the braid is reduced.
In order to achieve the above object, the present invention provides an easily deformable multi-layered woven fabric body comprising a plurality of warp yarn layers and weft yarn layers arranged at intervals, and binder yarns for fixing the warp yarns and the weft yarns; the warp yarns of the warp yarn layer and the weft yarns of the weft yarn layer are perpendicular to each other, and the binder yarns form a binding structure at the intersection points of the warp yarns and the weft yarns.
As a further improvement of the present invention, the binding direction of the binder yarn is the same as the arrangement direction of the warp yarns, and the binder yarn is wound obliquely upward from one side of the warp yarns to the upper side of the weft yarns intersecting therewith at the intersection and then obliquely downward to the lower side of the warp yarns.
As a further improvement of the present invention, each of said warp yarns includes at least two binder yarns in the direction of arrangement; and at the same intersection point, at least one binding yarn is wound from the left lower side of the warp yarn to the upper side of the weft yarn intersected with the right upper side of the warp yarn, then wound to the left lower side of the warp yarn, and at least one binding yarn is wound from the right upper side of the warp yarn to the lower side of the weft yarn intersected with the left lower side of the warp yarn, and then wound to the right upper side of the warp yarn, so that the left side, the right side, the upper side and the lower side of each warp yarn and the weft yarn at the intersection point form a binding structure.
As a further improvement of the invention, the warp density of the warp yarn layer is 1-10 pieces/cm, and the weft yarn density of the weft yarn layer is 1-10 pieces/cm; the fineness of the warp and weft is 10-400 Tex.
As a further improvement of the invention, the binder yarns are one or more of polyester, nylon or viscose.
As a further improvement of the invention, the material of the warp yarns and the weft yarns is one or more of carbon fibers, basalt fibers, quartz fibers, glass fibers, aramid fibers and polyarylate fibers.
As a further improvement of the invention, the total number of warp and weft layers is 10-50.
A method of weaving a flexible, multi-layer woven braid as claimed in any one of the preceding claims, comprising the steps of:
s1, according to a preset weaving layer number, penetrating each layer of warp yarns through heddles and arranging, penetrating tying yarns through skein heddles and arranging well, so that at least one tying yarn is arranged in the direction of each warp yarn;
s2, moving the heddles downwards, moving the skein heddles upwards to form a weaving opening of the upper weft yarns, and then introducing the upper weft yarns;
s3, transversely moving the skein heddles, and moving the skein heddles downwards after the skein heddles completely cross over the positions of warp yarns to complete the binding of weft yarns on the upper layer;
s4, moving the harness wire upwards to form a weaving opening of the lower weft yarn, and then introducing the lower weft yarn;
s5, transversely moving the skein heddles, and moving the skein heddles upwards after the skein heddles completely cross over the positions of warp yarns to finish the binding of weft yarns on the lower layer;
s6, repeating the steps S2 to S5 until the weft yarns are completely woven.
A method of weaving a flexible, multi-layer woven braid as claimed in any one of the preceding claims, comprising the steps of:
s1, according to a preset weaving layer number, penetrating each layer of warp yarns through heddles and arranging, and penetrating tying yarns through an upper doup heddle and a lower doup heddle respectively and arranging well so as to enable each warp yarn to be provided with two tying yarns in the direction;
s2, moving the heddles downwards, moving the upper doup heddle upwards, moving the lower doup heddle downwards to form a weaving opening of the upper weft yarn, and then introducing the upper weft yarn;
s3, after weaving of the upper layer weft yarns, moving the harness wires upwards to form a fell of the lower layer weft yarns, and introducing the lower layer weft yarns;
s4, transversely moving the upper doup heddle, moving the lower doup heddle downwards after completely crossing over the warp position, transversely moving the lower doup heddle in a direction opposite to that of the upper doup heddle, and moving the lower doup heddle upwards after completely crossing over the warp position to finish the fixation of the binding yarn to the warp and weft yarns;
s5, repeating the steps S2 to S4 until the weft yarns are completely woven.
Use of a flexible multi-layer woven braid as described above, or as obtained by the weaving process as described above, for the production of a curved protective structure.
The invention has the beneficial effects that:
1. the easily-deformed multilayer woven fabric and the weaving method thereof provided by the invention have the advantages that the warp yarns and the weft yarns are not interwoven, and are fixed by binding the binder yarns, so that the warp yarns and the weft yarns do not form a bent structure due to the need of interweaving, the warp yarns and the weft yarns are linearly arranged, the structure and the performance of the warp yarns and the weft yarns are not influenced, and the easily-deformed multilayer woven fabric and the weaving method thereof are particularly suitable for weaving special fibers. Utilize the crooked winding of knot yarn in nodical department to realize binding to prevent that the warp and weft yarn from sliding, can provide crooked space for the bending of follow-up fabric simultaneously, and can not cause the secondary damage of yarn because of crooked pulling.
2. The binding yarns and the warp yarns are in the same direction, so that the weaving is convenient. In this binding form, the binding path of the binder yarn is in a curved state, not in a closed loop state, so that the consumption of the binder yarn is less, the cost is lower, the weight of the knitted fabric is lighter, and the practicability is higher. The bending binding form of the invention has the function of gathering the weft yarns, so that the invention can be used for weaving products with higher warp and weft density.
3. The invention can effectively improve the high-thickness capability of the braided body by adopting a multilayer braided structure, and has the advantage that the easily-deformed multilayer braided body is directly obtained by adopting integrated braiding. The invention can change the defect that the traditional three-dimensional knitted fabric is not easy to deform and use, and the integrated knitting and the deformability thereof can also reduce the damage of yarns and fabrics. Therefore, the design not only has wide application range, but also can effectively control the cost on the premise of ensuring the use effect.
4. The easily-deformable multilayer woven body can be used for preparing a protective material with a curved surface structure, such as a helmet liner, can be attached to a curved surface and can be bent adaptively without generating wrinkles, and yarns can not be damaged due to bending or pulling, so that the practicability is high.
Drawings
FIG. 1 is a schematic view of the arrangement structure of the easy-to-deform multilayer woven braid weaving yarn of the invention.
FIG. 2 is a schematic structural diagram of the weaving process of the easily deformable multilayer woven braid of the present invention.
FIG. 3 is a schematic structural view of the easily deformable multi-layer woven braid of the present invention.
FIG. 4 is another schematic structural view of the easily deformable multilayer woven braid of the present invention.
FIG. 5 is a schematic cross-sectional view of the multi-layer woven braid which is easily deformed in FIG. 4.
FIG. 6 is a schematic diagram showing an arrangement structure of warp yarns and weft yarns in the prior art.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is described in detail below with reference to specific embodiments.
It should be noted that, in order to avoid obscuring the present invention with unnecessary details, only the structures and/or processing steps closely related to the solution of the present invention are shown in the specific embodiments, and other details not closely related to the present invention are omitted.
In addition, it should be further noted that 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.
Referring to FIGS. 1-6, the present invention provides a multi-layered woven fabric with easy deformation, which includes several layers of warp and weft yarns arranged at intervals, and binding yarns for fixing the warp and weft yarns, the warp and weft yarns are not interwoven; the warp yarns of the warp yarn layer and the weft yarns of the weft yarn layer are arranged perpendicular to each other, and the binder yarns form a binding structure at the intersection points of the warp yarns and the weft yarns. According to the arrangement, only warp yarns or weft yarns are arranged on each layer, namely the warp yarns and the weft yarns cannot be interwoven to form a bending structure, so that the warp yarns and the weft yarns are linearly arranged, the structure and the performance of the warp yarns and the weft yarns cannot be influenced, and the special fiber weaving machine is particularly suitable for weaving special fibers. The crossing points are bound by utilizing the binding yarns, and the binding is a non-closed binding structure, namely the binding yarns are bound by bending and winding between warp yarns and weft yarns, so that the warp yarns and the weft yarns are prevented from slipping, meanwhile, a bending space can be provided for bending of subsequent fabrics, and secondary damage of the yarns cannot be caused due to bending and pulling.
The warp density of the warp layer is 1-10 per cm, preferably 3-6 per cm, and the weft density of the weft layer is 1-10 per cm; preferably 3 to 6 roots/cm. The fineness of the warp yarns and the weft yarns is 10 to 400Tex. The bending binding form of the invention has the function of gathering the weft yarns, so that the invention can be used for weaving products with higher warp and weft density.
The warp and weft are made of one or more of carbon fiber, basalt fiber, quartz fiber, glass fiber, aramid fiber and polyarylate fiber. The total number of warp and weft layers is 10-50, preferably 15-30.
Specifically, the binding direction of the binder yarns is the same as the arrangement direction of the warp yarns, and the binder yarns obliquely wind from one side of the warp yarns to the upper side of the weft yarns intersected with the warp yarns at the intersection points and then obliquely wind downwards to the lower side of the warp yarns to realize the binding of the intersection points. The binding yarns and the warp yarns have the same direction, so that the weaving is convenient. In the binding mode, the binding path of the binding yarns is in a bending state instead of a closed loop state, so that the consumption of the binding yarns is less, the cost is lower, the weight of a woven body is lighter, and the practicability is higher. The binder yarns are preferably high tenacity, high elasticity fibers such as one or more of polyester, nylon or viscose. Provides space for the bending deformation of the braided body, is easy to bend and bind, and improves the braiding feasibility.
As shown in fig. 1-3, the method of forming a multi-layer woven fabric that is easily deformable when each warp yarn is provided with a binder yarn in the direction of each warp yarn includes the steps of:
s1, according to a preset weaving layer number, penetrating each layer of warp yarns through heddles and arranging, penetrating tying yarns through skein heddles and arranging well, so that at least one tying yarn is arranged in the direction of each warp yarn;
s2, moving the heddles downwards, moving the skein heddles upwards to form a weaving opening of the upper weft yarns, and then introducing the upper weft yarns;
s3, transversely moving the skein heddles, and moving the skein heddles downwards after the skein heddles completely cross over the warp yarn positions to complete the binding of the weft yarns on the upper layer;
s4, moving the harness wire upwards to form a weaving opening of the lower weft yarn, and then introducing the lower weft yarn;
s5, transversely moving the skein harness wires, and moving the skein harness wires upwards after the skein harness wires completely cross the warp positions to finish binding the weft yarns on the lower layer;
s6, repeating the steps S2 to S5 until the weft yarns are completely woven.
Preferably, as shown in FIGS. 2 and 3, each warp yarn includes at least two binder yarns in the direction of alignment; wherein, to same crossing point department, at least one binder yarn winds to the upside of its crossing woof of upper right side from the lower left side of warp, then winds to the lower left side of warp again, and at least one binder yarn winds to the downside of its crossing woof of lower left side from the upper right side of warp, then winds to the upper right side of warp again to the woof that makes every warp all forms binding structure with the crossing department about and both sides about and, thereby improves and binds the firmness.
The method of weaving a multi-layer woven fabric which is easily deformed when two binder yarns are provided in the direction of each warp yarn comprises the steps of:
s1, according to a preset weaving layer number, penetrating each layer of warp yarns through heddles and arranging, and penetrating tying yarns through an upper doup heddle and a lower doup heddle and arranging well so as to enable each warp yarn to be provided with two tying yarns in the direction;
s2, moving the heddles downwards, moving the upper doup heddle upwards, moving the lower doup heddle downwards to form a weaving opening of the upper layer weft yarns, and then introducing the upper layer weft yarns;
s3, after weaving of the upper layer weft yarns, moving the heddles upwards to form a weaving opening of the lower layer weft yarns, and introducing the lower layer weft yarns;
s4, transversely moving the upper doup heddle, moving the lower doup heddle downwards after completely crossing over the warp position, transversely moving the lower doup heddle in a direction opposite to that of the upper doup heddle, and moving the lower doup heddle upwards after completely crossing over the warp position to finish the fixation of the binding yarns to the warp and weft yarns;
s5, repeating the steps S2 to S4 until the weft yarns are completely woven.
When the weaving body is of a multilayer structure, only two binding yarns are needed in the same warp direction in the whole thickness, when weaving, the warp yarns in all the thicknesses are well arranged through heddles, the binding yarns respectively pass through an upper doup heddle and a lower doup heddle and are well arranged, the upper doup heddle is positioned above the warp yarn at the uppermost layer, the lower doup heddle is positioned below the warp yarn at the lowermost layer, then the heddles of all the layers are moved downwards, the upper doup heddle moves upwards, the lower doup heddle moves downwards to form a weaving opening of the weft yarn at the upper layer, and then the weft yarn at the upper layer is introduced; after the upper layer weft yarns are woven, the heddles are moved upwards to form a weaving opening of the lower layer weft yarns, and the lower layer weft yarns are introduced; and (3) transversely moving the upper doup heddle, moving the lower doup heddle downwards after completely crossing over the warp position, transversely moving the lower doup heddle in a direction opposite to that of the upper doup heddle, and moving the lower doup heddle upwards after completely crossing over the warp position to finish the fixation of the binding yarns to the warp and weft yarns. In such operation, due to the bending and winding type binding structure, only one or two binding yarns are needed in the same warp yarn direction of the integrated thickness, so that the warp yarns and the weft yarns in the direction can be bound, the using amount of the binding yarns is saved, and the weight of a woven body is reduced.
As a specific embodiment, the warp yarns are carbon fibers, and the warp density of the fabric is 3.8 pieces/cm; the weft yarns are aramid fibers, and the warp density of the fabric is 3.8 pieces/cm; binder yarns (nylon) bind the warp and weft yarns together to form a twisted three-dimensional weave structure, the number of layers of which can be infinitely increased.
The easily-deformable multilayer woven body can be used for preparing a protective material with a curved surface structure, such as a helmet liner, can be attached to a curved surface and can be bent adaptively without generating wrinkles, and yarns can not be damaged due to bending or pulling, so that the practicability is high.
In conclusion, the easily-deformable multilayer woven body and the weaving method thereof provided by the invention have the advantages that the warps and the wefts are not interwoven, and are fixed by binding the binder yarns, so that the warps and the wefts are linearly arranged, the structure and the performance of the easily-deformable multilayer woven body cannot be influenced, and the easily-deformable multilayer woven body and the weaving method thereof are particularly suitable for weaving special fibers. The binding is realized by utilizing the bending winding of the binding yarns at the intersection points, so that the slippage of the warp and weft yarns is prevented, meanwhile, a bending space can be provided for the bending of subsequent fabrics, and the secondary damage of the yarns caused by bending and pulling can be avoided. The easily-deformable multilayer woven body can be used for preparing a protective material with a curved surface structure, such as a helmet liner, can be attached to a curved surface and can be bent adaptively without generating wrinkles, and yarns can not be damaged by bending or pulling, so that the practicability is high.
Although the present invention has been described in detail with reference to the preferred embodiments, it will be understood by those skilled in the art that various changes may be made and equivalents may be substituted without departing from the spirit and scope of the invention.
Claims (10)
1. A multi-layer woven body easy to deform is characterized by comprising a plurality of warp yarn layers and weft yarn layers which are arranged at intervals, and tying yarns for fixing the warp yarns and the weft yarns; the warp yarns of the warp yarn layer and the weft yarns of the weft yarn layer are perpendicular to each other, and the binder yarns form a binding structure at the intersections of the warp yarns and the weft yarns.
2. A flexible, multi-layer woven braid as claimed in claim 1 wherein said binder yarns are bound in the same direction as said warp yarns and are wound obliquely upward from one side of said warp yarns to the upper side of the weft yarns crossing them at said crossing points and then obliquely downward to the lower side of said warp yarns.
3. A flexible, multilayer woven braid as claimed in claim 1 wherein each of said warp yarns comprises at least two binder yarns in the direction of alignment; and at the same intersection point, at least one binding yarn winds from the left lower side of the warp yarn to the upper side of the weft yarn intersected with the right upper side of the warp yarn and then winds to the left lower side of the warp yarn, and at least one binding yarn winds from the right upper side of the warp yarn to the lower side of the weft yarn intersected with the left lower side of the warp yarn and then winds to the right upper side of the warp yarn, so that the left side, the right side, the upper side and the lower side of each warp yarn and the weft yarn at the intersection point form a binding structure.
4. A flexible, multi-layer woven braid as claimed in claim 1 wherein said warp layer has a warp density of 1 to 10 yarns/cm and said weft layer has a weft density of 1 to 10 yarns/cm; the fineness of the warp and weft is 10-400 Tex.
5. A flexible, multi-layer woven braid of claim 1 wherein the binder yarns are one or more of polyester, nylon or viscose.
6. A flexible multi-layer woven braid as claimed in claim 1 wherein said warp and weft yarns are made of one or more of carbon fiber, basalt fiber, quartz fiber, glass fiber, aramid fiber and polyarylate fiber.
7. A flexible multilayer woven braid of claim 1 wherein the total number of warp and weft layers is 4 to 50.
8. A method of weaving a flexible multi-layer woven braid as claimed in any one of claims 1 to 7, characterized in that it comprises the steps of:
s1, according to a preset weaving layer number, penetrating each layer of warp yarns through heddles and arranging the warp yarns, and penetrating the binding yarns through skein heddles and arranging the binding yarns so that at least one binding yarn is arranged in the direction of each warp yarn;
s2, moving the heddles downwards, moving the skein heddles upwards to form a weaving opening of the upper weft yarns, and then introducing the upper weft yarns;
s3, transversely moving the skein heddles, and moving the skein heddles downwards after the skein heddles completely cross over the warp yarn positions to finish the binding of weft yarns on the upper layer;
s4, moving the harness wires upwards to form a fell of the lower weft yarns, and then introducing the lower weft yarns;
s5, transversely moving the skein harness wires, and moving the skein harness wires upwards after the skein harness wires completely cross the warp positions to finish binding the weft yarns on the lower layer;
s6, repeating the steps S2 to S5 until the weft yarns are completely woven.
9. A method of weaving a flexible multi-layer woven braid as claimed in any one of claims 1 to 7, characterized in that it comprises the steps of:
s1, according to a preset weaving layer number, penetrating each layer of warp yarns through heddles and arranging, and penetrating tying yarns through an upper doup heddle and a lower doup heddle respectively and arranging well so as to enable each warp yarn to be provided with two tying yarns in the direction;
s2, moving the heddles downwards, moving the upper doup heddle upwards, moving the lower doup heddle downwards to form a fell of an upper layer weft yarn, and then introducing the upper layer weft yarn;
s3, after weaving of the upper layer weft yarns, moving the heddles upwards to form a weaving opening of the lower layer weft yarns, and introducing the lower layer weft yarns;
s4, transversely moving the upper doup heddle, moving the lower doup heddle downwards after the upper doup heddle completely crosses the warp position, transversely moving the lower doup heddle in a direction opposite to that of the upper doup heddle, and moving the lower doup heddle upwards after the upper doup heddle completely crosses the warp position to finish the fixation of the binding yarns to the warps and the wefts;
s5, repeating the steps S2 to S4 until the weft yarns are completely woven.
10. Use of a flexible multi-layer woven braid as claimed in any one of claims 1 to 7 or as obtained by the weaving process of any one of claims 8 to 9 for the production of a protective material for curved structures.
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