KR101985947B1 - Manufacturing method for cross-ply fabric capable of maintaining yarn properties and cross-ply fabric manufactured by the same - Google Patents

Abstract

The present invention can produce a composite fabric using a base fabric that is made of nonwoven fabric such as carbon fiber, glass fiber, aramid, or the like, and the composite fabric thus produced stably maintains its shape, The present invention relates to a novel crossfabric fabrication method and a functional crossfabric fabric manufactured thereby. According to the present invention, the nonwoven fabric, which is one of carbon fiber, glass fiber, or aramid, is arranged in the wrap direction or the weft direction, and the nonwoven fabric is arranged in the other weft direction or the inclined direction A base fabric providing step of providing two unidirectional first and second base fabrics on which the fibers are arranged, respectively; And a first and a second base fabric gathering step of assembling the first and second base fabrics, respectively, to form a cross-ply fabric, wherein in the first base fabric preparing step, And the carbon fibers arranged in the weft direction in the second base fabric preparing step are supplied in a yarn composed of a plurality of filaments, and the carbon fibers are arranged in a flat shape And a supply of the crossflange fabric is maintained while being supplied.

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method of manufacturing a cross-fly fabric, and more particularly, to a method of manufacturing a cross-

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to a method for manufacturing a cross-ply fabric and a cross-ply fabric produced thereby, and more particularly, to a cross-ply fabric having a composite fabric by using a base fabric that is woven or tumbled with nonspecific fibers such as carbon fiber, glass fiber, The composite fabric thus produced stably maintains its shape and prevents twisting or folding occurring during the weaving process, thereby lowering the crimp ratio of the carbon fiber, thereby maximizing the maintenance of the yarn characteristics capable of maximizing physical properties. The present invention relates to a method of manufacturing a cross-fly fabric and a cross-fly fabric manufactured thereby.

This study is the result of research carried out by the Ministry of Commerce, Industry and Energy and the Korea Institute of Industrial Technology (KIET) to promote the economic cooperation industry. (This research was supported by Ministry of Trade, Industry & Energy (MOTIE), Korea Institute for Advancement of Technology (KIAT) through the Encouragement Program for the Industries of the Economic Cooperation Region.

In the case of the fabric type in which the warp yarns and the weft yarns are crossed and formed uniformly in one direction rather than the curved fabric type, there is no strength drop due to bending, and the prepreg process of the resin composite material or the one- Fiber sheets are attracting attention.

On the other hand, in the process of manufacturing a carbon fiber preform, a bundle of polyacrylonitrile (PAN) carbon fibers is spread flatly in a tow shape, A method of manufacturing a unidirectional carbon fiber fabric is used.

Cross ply fabrics can be easily manufactured at a low cost using a so-called non-crimp fabric (multiaxial warp knit) facility. In general, non-crimp fabric facilities are capable of mass production of about 3 billion won, There is a problem with very difficulty.

On the other hand, in weaving the fabric, the physical properties of the fabric are different from the inherent properties of the yarn. This is due to the difference in linearity and the difference in parallelism due to natural twist or folding due to the crimp occurring in the process of weaving the yarn In the case of ordinary fabrics, there is a greater difference in parallelism or linearity than in unidirectional fabrics, and there is a problem in that more composite material should be used for the final properties due to the lowering of the efficiency.

(Document 1) Korean Patent Publication No. 10-2007-0083221 (Aug. 23, 2007) (Document 2) Korean Patent Publication No. 10-2011-0078342 (July 7, 2011) (Document 3) Korean Published Patent Application No. 10-2016-0012860 (Feb.

SUMMARY OF THE INVENTION Accordingly, the present invention has been made to solve the above-mentioned problems occurring in the prior art, and it is an object of the present invention to provide a composite fabric which can be manufactured using a base fabric that is woven or nonwoven fabric made of nonwoven fabric such as carbon fiber, glass fiber, or aramid. A method of fabricating a crossfabric fabric capable of maximizing the property of the yarn by maximizing the property of the fiber by reducing the crimp ratio of the carbon fiber by preventing twist or folding occurring during the weaving process, And to provide a crossfabric fabric manufactured thereby.

The present invention has been made in view of the above problems, and it is an object of the present invention to provide an apparatus and method for controlling the same.

According to a first aspect of the present invention for achieving the above and other features of the present invention, there is provided a spunbond fiber comprising carbon fibers, glass fibers or aramid fibers arranged in a weft direction or a wrap direction A base fabric preparing step of preparing two unidirectional first and second base fabrics in which resin-coated fibers are arranged in different weft direction or inclined direction in which the non-spun fibers are arranged; And a first and a second base fabric gathering step of assembling the first and second base fabrics, respectively, to form a cross-ply fabric, wherein in the first base fabric preparing step, And the carbon fibers arranged in the weft direction in the second base fabric preparing step are supplied in a yarn composed of a plurality of filaments, and the carbon fibers are arranged in a flat shape And a supply of the crossflange fabric is maintained while being supplied.

According to a second aspect of the present invention, there is provided a nonwoven fabric comprising a nonwoven fabric, wherein carbon fibers, glass fibers or aramid fibers are arranged in a wrapping direction and resin-coated fibers are arranged and weaving in a weft direction, A first base fabric providing step of providing a first base fabric; Providing a second base fabric, wherein the second base fabric is arranged in such a manner that the nonwoven fabric, which is one of carbon fiber, glass fiber, or aramid, is arranged in the weft direction and resin-coated fibers are arranged and wefted in an oblique direction; And a first and a second base fabric gathering step of assembling the first base fabric and the second base fabric, respectively, to form a 0- to 90-degree crossfly fabric, And the carbon fibers arranged in the weft direction in the second base fabric providing step are supplied in a yarn composed of a plurality of filaments and are flat without being twisted or folded, So as to be supplied while maintaining the shape of the cross-ply fabric.

In the first and second aspects of the present invention, in the step of preparing the base fabric, the resin-coated fiber is made of a low melting point resin polyester fiber or a low melting point resin coated glass fiber, and the first and second base fabrics And the resin-coated fiber is used in a weight of 1 wt% to 20 wt% with respect to the non-fused fiber.

In the first and second aspects of the present invention, the first and second base fabric fusing steps may further include a fusing additional member feeding step of feeding and fusing a fusing addition member between the first base fabric and the second base fabric to be fused .

In the first and second aspects of the present invention, the method may further include a step of injecting a functional material into the first and second base fabric fabrication steps.

In the first and second aspects of the present invention, the first and second base fabric gathering steps may include a step of weaving the first base fabric or weaving the second base fabric, The first base fabric may be inserted into the first base fabric and the second base fabric may be inserted through the fusion additional member.

In the present invention, the fusion adding member may be made of a low melting point resin film, a nonwoven fabric, or an adhesive.

The method may further include a step of injecting a functional material into the first and second base fabric assembling steps.

In the present invention, in the step of injecting the functional material, the functional material may be carbon nanotubes.

According to a third aspect of the present invention, there is provided a cross-fly fabric produced by the manufacturing method of the cross-fly fabric according to the first and second aspects.

According to the method for fabricating a cross-fly fabric capable of maximizing the maintenance of yarn characteristics of the present invention and the functional cross-fly fabric fabricated thereby, a composite fabric can be manufactured by using a base fabric that is made of carbon fiber or warp. The composite fabric produced by this method has an effect of stably maintaining its shape.

According to the present invention, the flatness of the yarn is maintained by preventing the yarn from being twisted or folded during the weaving process so that the parallelism of the filaments of the carbon fiber is maintained at the level of the yarn state, And the carbon fiber has a low crimp ratio, thereby maximizing physical properties.

Further, according to the present invention, there is an effect that it is not necessary to additionally use a composite material in order to prevent deterioration of physical property efficiency.

The effects of the present invention are not limited to those mentioned above, and other solutions not mentioned may be clearly understood by those skilled in the art from the following description.

FIG. 1 is a flowchart showing a manufacturing process of a method for fabricating a functional cross-fly fabric according to the present invention.

Further objects, features and advantages of the present invention will become more apparent from the following detailed description and the accompanying drawings.

Before describing the present invention in detail, it is to be understood that the present invention is capable of various modifications and various embodiments, and the examples described below and illustrated in the drawings are intended to limit the invention to specific embodiments It is to be understood that the invention includes all modifications, equivalents, and alternatives falling within the spirit and scope of the invention.

It is to be understood that when an element is referred to as being "connected" or "connected" to another element, it may be directly connected or connected to the other element, . On the other hand, when an element is referred to as being "directly connected" or "directly connected" to another element, it should be understood that there are no other elements in between.

The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. The singular expressions include plural expressions unless the context clearly dictates otherwise. In this specification, the terms "comprises" or "having" and the like refer to the presence of stated features, integers, steps, operations, elements, components, or combinations thereof, But do not preclude the presence or addition of one or more other features, integers, steps, operations, elements, components, or combinations thereof.

Also, the terms " part, " " unit, " " module, " and the like, which are described in the specification, refer to a unit for processing at least one function or operation, Software. ≪ / RTI >

In the following description with reference to the accompanying drawings, the same components are denoted by the same reference numerals regardless of the reference numerals, and a duplicate description thereof will be omitted. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings. In the following description, well-known functions or constructions are not described in detail since they would obscure the invention in unnecessary detail.

Hereinafter, a method of manufacturing a crossfabric fabrication method capable of maximizing yarn characteristic retention according to a preferred embodiment of the present invention will be described in detail with reference to FIG. FIG. 1 is a flow chart showing a manufacturing process of a crossfly fabric manufacturing method capable of maximizing the maintenance of yarn characteristics according to the present invention.

1, a method for fabricating a cross-ply fabric capable of maximizing the maintenance of yarn characteristics according to the present invention is characterized in that cost fibers such as carbon fiber, glass fiber, or aramid are arranged in a wrap direction and weft (S100) of arranging and weaving resin-coated fibers in the direction of the first base fabric to provide a first base fabric; A second base fabric preparation step (S200) of arranging carbon fibers in a weft direction and arranging resin-coated fibers in an oblique direction and weaving to provide a second base fabric; And a first and second base fabric gathering step (S300) of assembling the first base fabric and the second base fabric, respectively, to form a 0- to 90-degree cross-ply fabric.

Here, the non-spun fibers such as carbon fiber, glass fiber, or aramid arranged in an oblique direction in the first base fabric preparation step (S100) and carbon fibers arranged in the weft direction in the second base fabric preparation step (S100) The fibers are made such that a yarn (for example, 12K yarn (12,000 yarns of yarn) made of a plurality of filaments is supplied, for example, to be supplied while maintaining a flat shape by applying a predetermined tension .

The supply of this type of yarn is, for example, marginalized in a tangential direction at each bobbin on which the krill is mounted, while having a certain tension when the yarn is deflected in a wound creel, In order to prevent natural twisting occurring when the yarn is wound in the direction of the yarn and to prevent twisting or width folding that may occur later from occurring through the apparatus including various guides and rollers in the process of being fed to the loom, It is possible to use a type of gripper to maintain the flat shape without kinking.

As another example, the spread yarn may be adhered to the adhesive tape by a separate spreading process so as to be supplied while being deflected from a rolled roll, so that the supplied yarn is maintained in a flat shape without being twisted .

The supplying method of this other example can be executed in combination with the example described above. That is, when spreading treated yarn is to be wound on a wound roll, it is to be tangentially deflected in each bobbin. In the course of supplying the yarn to the loom, a twist or width It is possible to maintain the flat shape without being twisted by using a predetermined type of gripper in the loom.

The supply of such a plurality of yarns enables the parallelism of the filaments of the fibers to be maintained in the state of physical properties of the yarn prior to the supply thereof, thereby maximizing the tensile strength and elasticity.

The guide, the roller, and the gripper, which are illustrated in the above, may be of any configuration and shape as long as they are intended to prevent twisting, folding, etc. during the supply of the yarn.

Next, the resin-coated fiber used in the first base fabric preparation step (S100) is made of a low melting point resin polyester fiber or a low melting point resin coated glass fiber, It is preferred to use a relatively low weight of 20% by weight.

Similarly, the resin-coated fiber used in the second base fabric preparation step (S200) may be composed of a melting point resin polyester fiber or a low melting point resin coated glass fiber. Again, it is preferable that the resin-coated fiber is used at a relatively low weight of 1 wt% to 20 wt% with respect to the carbon fiber used.

In the first base fabric providing step (S100) and the second base fabric providing step (S200), the carbon fibers and the resin coating fibers are fused together by using a heating and fusing device in the form of a heating roller to form a base fabric.

Next, the first and second base fabric assembling steps (S300) may include a fusing additional member feeding step (S300) for further joining and fusing a fusion fusing member for solid fusing between the first base fabric and the second base fabric to be fused (S400).

The fusing addition member used in the fusing addition member injection step (S400) may be a low melting point resin film, a nonwoven fabric, or an adhesive.

The first and second base fabric assembling steps S300 may be performed by weighing the first base fabric or weaving the second base fabric, .

For example, in a process of weaving low-melting-point resin fibers of relatively low weight using a warp beam and weft-making weft yarns of nonwoven fabric such as carbon fiber, glass fiber, or aramid, (A base fabric having a warp of carbon fiber and a low-melting-point resin fiber) is put in a hot-melt apparatus, and a low-melting-point film, a nonwoven fabric, Directional one-way fabric can be directly produced in a cross-ply form.

This process can be performed by changing the order. That is, it is possible to form a cross-ply by weaving in a weaving process in which other base fabrics are produced by preliminarily preparing base fabrics woven with non-woven fibers such as carbon fiber, glass fiber or aramid, . ≪ / RTI > Also in this case, the flat type supply process described above is included, and a detailed description thereof will be omitted for the sake of simplicity of description and explanation.

Subsequently, the method for fabricating a functional crossfabric fabric according to the present invention further includes a step S500 of injecting a functional material into the first and second base fabric assembling steps (S300).

The step S500 of applying the functional material is to apply a functional material for imparting functionality to the finally completed crossfabric fabric in a process of more firmly fusing the first and second base fabrics through the fusing addition member, For example, the functional material may be a carbon nanotube (CNT).

By using functional materials such as carbon nanotubes, the present invention can improve ILSS (Interlaminar Shear Strength: ILSS) of crossfabric fabric, which is a composite material, and in particular, resin transfer molding (RTM) It is possible to provide a very large efficiency in forming a preform of a mold (e.g., a heating mold).

A method of manufacturing a cross-ply fabric capable of maximizing the retention of yarn characteristics according to the present invention and a cross-ply fabric manufactured thereby can produce a composite fabric by using a base fabric that is made of carbon fiber or warp , And the composite fabric produced thereby has an advantage that it can stably maintain its shape.

In addition, according to the present invention, the flatness of the filament state is kept as it is by preventing twist, folding, etc. during the weaving process so that the parallelism of the filaments of the carbon fiber is maintained at the level of the yarn state, And the carbon fiber has a low crimp ratio, thereby maximizing physical properties. Further, there is no need to additionally use a composite material in order to prevent deterioration of physical property efficiency.

The embodiments and the accompanying drawings described in the present specification are merely illustrative of some of the technical ideas included in the present invention. Therefore, it is to be understood that the embodiments disclosed herein are not for purposes of limiting the technical idea of the present invention, but rather are not intended to limit the scope of the technical idea of the present invention. It will be understood by those of ordinary skill in the art that various changes in form and details may be made therein without departing from the spirit and scope of the invention as defined by the appended claims.

S100: Step of preparing the first base fabric
S200: Step of preparing second base fabric
S300: First and second base fabric fabrication steps
S400: Fusion addition member injection step
S500: Step of applying functional material

Claims (12)

delete The nonwoven fabric, which is one of carbon fiber, glass fiber or aramid, is arranged in a wrapping direction and the resin-coated fibers are arranged and weaving in the weft direction to form a first base fabric A first base fabric providing step of forming a first base fabric;
Providing a second base fabric, wherein the second base fabric is arranged in such a manner that the nonwoven fabric, which is one of carbon fiber, glass fiber, or aramid, is arranged in the weft direction and resin-coated fibers are arranged and wefted in an oblique direction; And
And first and second base fabric gathering steps of laminating each of the first base fabric and the second base fabric to each other at 0 ° to 90 ° to form a cross fly fabric,
The first and second base fabric fusing steps may include a fusing additional member injection step of injecting and fusing a fusing addition member made of a low melting point resin film, a nonwoven fabric, or an adhesive between the first base fabric and the second base fabric to be assembled; And a step of injecting a functional material comprising a carbon nanotube,
Wherein the non-spun fibers arranged in an oblique direction in the first base fabric preparation step and the spunbond fibers arranged in a weft direction in the second base fabric preparation step are supplied in a yarn composed of a plurality of filaments, So as to be supplied in a flat shape without causing folding or folding
How to make crossfly fabric.
3. The method of claim 2,
In the step of preparing the base fabric, the resin-coated fiber is composed of a low melting point resin-coated polyester fiber or a low melting point resin-coated glass fiber,
The first and second base fabrics are each heated and welded to be woven,
The resin-coated fiber is used in a weight of 1 wt% to 20 wt% with respect to the non-fused fiber
How to make crossfly fabric.
delete delete delete delete delete delete delete delete A cross-fly fabric produced by the method of manufacturing a cross-fly fabric according to claim 2 or claim 3.

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