KR102248781B1 - A preparating method of water repellent fiber for exterior material of vehicle - Google Patents

Abstract

The present invention relates to a manufacturing method of a water-repellent fiber for interior and exterior materials of vehicles, and specifically, in the method, rather than forming a water-repellent coating layer on a nonwoven fabric used for the interior and exterior materials such as wheel guards, undercovers, and the like, first, the water-repellent fiber is manufactured and then the interior and exterior materials are formed by using the manufactured water-repellent fiber.

Description

A PREPARATING METHOD OF WATER REPELLENT FIBER FOR EXTERIOR MATERIAL OF VEHICLE}

The present invention relates to a method of manufacturing a water-repellent fiber for an interior and exterior material of a vehicle. Specifically, a water-repellent coating layer is not formed on a nonwoven fabric used for exterior materials such as wheel guards and undercovers or interior materials such as trunk mats, but a water-repellent fiber is first manufactured, and the interior and exterior materials are formed by using the same.

Water repellency refers to making it difficult to get wet by repelling water from the surface of fabrics. Parts such as wheel guards and undercovers mounted on the exterior of a vehicle must be water-repellent and/or antifouling.

If moisture from road pollution, rain, car washing, etc. is easily absorbed by the above parts, the weight of the parts may increase and bend, and the stiffness of the parts may change accordingly. In addition, recently, an air permeable layer is formed on the above parts to impart noise reduction functionality. However, absorption of moisture or contaminants may impair the functionality of the stomach.

Conventionally, in order to prevent the above problems, a water-repellent coating was applied on a needle-punching nonwoven fabric such as Korean Patent No. 10-1756303. However, with such a surface treatment of the nonwoven fabric, the water repellency and stain resistance were not sufficient, and the water repellent coating layer was easily peeled off and there was a limit to loss of its function.

Korean Patent Registration No. 10-1756303

The present invention has been devised to solve the above limitations, and has the following purposes.

It is an object of the present invention to provide a method of manufacturing a water-repellent fiber for an interior and exterior material of a vehicle that lasts longer in water repellency and antifouling properties.

Another object of the present invention is to provide a method of manufacturing an interior and exterior material of a vehicle with remarkably improved water repellency and antifouling properties.

The object of the present invention is not limited to the object mentioned above. Objects of the present invention will become more apparent from the following description, and will be realized by means described in the claims and combinations thereof.

A method of manufacturing a water-repellent fiber for interior and exterior materials of a vehicle according to an embodiment of the present invention includes the steps of obtaining undrawn yarn by spinning a raw material containing a polymer resin, drawing the undrawn yarn to obtain yarn, and putting the yarn into a processing device. It may include a step of water-repellent treatment, a step of drying the water-repellent treated yarn, and a step of cutting the dried yarn to obtain short fibers.

The polymer resin may include polyethylene terephthalate (PET), polyethylene naphthalate (PEN), polyimide (PI), and a combination thereof.

The manufacturing method may be to obtain undrawn yarn by melt spinning the raw material.

The yarn may be in the form of a skein in which Filament yarns having a fineness of 0.5 to 50 denier are fused into 1,000 to 10,000 strands.

The manufacturing method may further include crimping the yarn before putting the yarn into the processing device.

The processing apparatus includes: a chamber including an inlet and an outlet; And a nozzle provided inside the chamber and spraying a water repellent liquid onto the yarn introduced through the inlet.

The nozzle may be provided at at least one of the inlet port, the outlet port, and a predetermined position on the moving path of the yarn.

The nozzle is to the upper side and the lower side of the yarn, the inlet; The outlet; And it may be provided at three to five locations spaced apart by a predetermined distance along the moving path of the yarn.

The nozzle may have a diameter of 0.5mm to 5mm.

The nozzle may have a spray pressure of 1kgf/cm2 to 10kgf/cm2 of the water repellent liquid.

The distance between the nozzle and the yarn may be 10 cm to 50 cm.

The water repellent may include a fluorine-based water repellent.

The water repellent liquid may have a temperature of 10°C to 50°C.

The manufacturing method may be performing a step of drying the water-repellent treated yarn as soon as it is discharged from the treatment device.

The drying may be performed while vibrating the yarn.

The drying may be performed at 110°C to 180°C.

The manufacturing method may be to further include the step of drying the short fibers.

Drying of the short fibers may be performed at 110 ℃ to 180 ℃.

A method of manufacturing an interior and exterior material for a vehicle according to an embodiment of the present invention may include weaving a nonwoven fabric using a water-repellent fiber manufactured by the above method, and manufacturing an interior and exterior material having a predetermined shape using the nonwoven fabric.

According to the present invention, it is possible to obtain a vehicle interior and exterior material that has excellent water repellency and antifouling properties and lasts a long time.

The effects of the present invention are not limited to the above-mentioned effects. It should be understood that the effects of the present invention include all effects that can be inferred from the following description.

1 schematically shows a method of manufacturing a water-repellent fiber according to the present invention.
Figure 2 schematically shows the processing apparatus of the present invention.
3 is a result of measuring the water repellency and antifouling properties of the water repellent fiber according to the present invention.

The above objects, other objects, features, and advantages of the present invention will be easily understood through the following preferred embodiments related to the accompanying drawings. However, the present invention is not limited to the embodiments described herein and may be embodied in other forms. Rather, the embodiments introduced herein are provided so that the disclosed content may be thorough and complete, and the spirit of the present invention may be sufficiently conveyed to those skilled in the art.

In describing each drawing, similar reference numerals have been used for similar elements. In the accompanying drawings, the dimensions of the structures are shown to be enlarged than actual for clarity of the present invention. Terms such as first and second may be used to describe various elements, but the elements should not be limited by the terms. The above terms are used only for the purpose of distinguishing one component from another component. For example, without departing from the scope of the present invention, a first element may be referred to as a second element, and similarly, a second element may be referred to as a first element. Singular expressions include plural expressions unless the context clearly indicates otherwise.

In the present specification, terms such as "comprise" or "have" are intended to designate the presence of features, numbers, steps, actions, components, parts, or combinations thereof described in the specification, but one or more other features. It is to be understood that the presence or addition of elements or numbers, steps, actions, components, parts, or combinations thereof, does not preclude in advance the possibility of being added. Further, when a part such as a layer, film, region, plate, etc. is said to be "on" another part, this includes not only the case where the other part is "directly above", but also the case where there is another part in the middle. Conversely, when a part such as a layer, a film, a region, or a plate is said to be "under" another part, this includes not only the case where the other part is "directly below" but also the case where there is another part in the middle.

Unless otherwise specified, all numbers, values, and/or expressions expressing quantities of ingredients, reaction conditions, polymer compositions, and formulations used herein are those that occur in obtaining these values, among other things essentially. Since they are approximations that reflect the various uncertainties of the measurement, it should be understood as being modified in all cases by the term "about". In addition, when numerical ranges are disclosed herein, such ranges are continuous and, unless otherwise indicated, include all values from the minimum value of this range to the maximum value including the maximum value. Furthermore, where this range refers to an integer, all integers from the minimum to the maximum value including the maximum value are included, unless otherwise indicated.

In the present specification, "water-repellent fiber" refers to a water-repellent treated yarn, a yarn dried after water-repellent treatment, or a short fiber cut from the yarn, which will be described later. You will be able to grasp it clearly, and unless otherwise stated, it can be interpreted as meaning all of the above states.

1 schematically shows a method of manufacturing a water-repellent fiber according to the present invention. Referring to this, the manufacturing method includes the steps of obtaining undrawn yarn by spinning a raw material containing a polymer resin (S10), obtaining a yarn by stretching the undrawn yarn (S20), and crimping the yarn ( S30), the step of injecting the yarn into a treatment device for water-repellent treatment (S40), the step of first drying the water-repellent-treated yarn (S50), the step of cutting the dried yarn to obtain short fibers (S60), and the It may include a step (S70) of secondary drying the short fibers.

Hereinafter, each step will be described in detail. In addition, since the equipment and method shown in FIG. 1 are intended to more easily describe the present invention, the present invention should not be construed as limited thereto, and the scope of the present invention should be determined in consideration of all the following descriptions together with FIG. will be.

The undrawn yarn can be obtained by spinning the raw material (S10). The spinning method of the raw material is not particularly limited, and may be wet spinning, dry spinning, or melt spinning. However, it may be desirable to adopt melt spinning in terms of productivity and process simplicity. Specifically, the raw material stored in the hopper 11 is heated to a temperature above the melting point and melted, and then the melted raw material is extruded and spun through the hole of the spinneret 13 through the extruder 12 to obtain undrawn yarn (A). I can.

The raw material may be one containing a polymer resin, for example, polyethylene terephthalate (PET), polyethylene naphthalate (Polyethylene naphthalate), polyimide (Polyimide, PI) and those selected from the group consisting of a combination thereof. Can include.

The undrawn yarn (A) can be stretched at a certain ratio to obtain the yarn (B) (S20). The stretching ratio is not particularly limited, and can be adjusted to an appropriate level according to equipment, use, and the like. Further, the method of stretching is also not particularly limited, and, for example, a plurality of rolls 21 and 21' can be used.

The yarn (B) may be in the form of a skein in which a filament yarn (a) having a predetermined denier is laminated. The present invention is characterized in that in manufacturing a water-repellent nonwoven fabric that is finally used for interior and exterior materials of a vehicle as described above, a water-repellent treatment is performed on the fibers constituting the nonwoven fabric, rather than a water-repellent treatment on the nonwoven fabric. . In particular, the present invention provides a water-repellent treatment to the fiber, but does not water-repellent treatment to each of the melt-spun filament yarns (a), but water-repellent treatment to the skein-type yarn (B) in which the filament yarns (a) are bonded It is characterized by that. When the water repellent treatment is performed on each of the filament yarns (a), the water repellent may not be properly attached to the filament yarn (a), and since a considerable amount of the water repellent is required, the efficiency of the water repellent treatment may be poor.

Specifically, the yarn (B) may be in the form of a skein in which a fineness of 0.5 to 50 denier filament yarn is fused into 1,000 to 10,000 strands.

Before the water-repellent treatment of the yarn (B), the yarn (B) may be crimped (S30). Crimping is a process for giving wrinkles to the yarn (B), and can be performed using a conventional crimping device (31).

Thereafter, the yarn (B) may be put into the treatment device 41 to perform water repellency treatment (S40). As described above, the yarn (B) may be in the form of a skein in which a plurality of filament yarns are laminated.

2 schematically shows the processing device 41. Referring to this, the processing device 41 includes a chamber 411 including an inlet 411a and an outlet 411b, and yarn (B) provided in the chamber 411 and introduced through the inlet 411a. It may include nozzles (412, 412') for spraying the water repellent (C).

The nozzles 412 and 412 ′ may be provided in at least one of a predetermined position in the vicinity of the inlet 411a, the outlet 411b, and a movement path of the yarn B. Here, "near the inlet" and "near the outlet" are the inlet 411a and the outlet 411b so that the water-repellent liquid C can be sprayed on the yarn B at the time when the yarn B flows in and out, respectively. It can mean a location close to ).

The nozzles 412 and 412' may be provided in the vicinity of the inlet 411a, in the vicinity of the outlet 411b, and at 3 to 5 locations spaced apart by a predetermined distance along the moving path of the yarn (B). have. At this time, the nozzle 412 in the vicinity of the inlet 411a and the outlet 411b is close to the yarn (B), and the nozzle 412 ′ provided along the moving path is the distance from the yarn (B). It can be designed to be farther than the nozzle described above. Specifically, the distance between the nozzles 412 and 412' and the yarn B is set to 10 cm to 50 cm, but the nozzle 412 near the inlet 411a and the outlet 411b is close to the above range, and the yarn B The nozzle 412 ′ provided along the movement path of) may be installed farther than the nozzle 412 described above in the above range.

The nozzles 412 and 412' may be installed on both the upper and lower sides of the yarn (B). This is to evenly spray the water-repellent liquid (C) on the yarn (B).

The diameter and injection pressure of the nozzles 412 and 412 ′ are not particularly limited, but for example, the diameter may be 0.5mm to 5mm, and the injection pressure may be 1kgf/cm2 to 10kgf/cm2. If it is less than the above numerical range, the water-repellent liquid (C) may not sufficiently penetrate the yarn (B), and if it is exceeded, there is a risk of damage to the yarn (B) by the pressure of the water-repellent liquid (C).

For water repellent treatment, it is common to spray a water repellent at a high temperature of 150°C or higher onto the yarn. That is, a water repellent that exhibits a water repellent effect at high temperature was mainly used. However, since the yarn may be damaged during high temperature treatment, the present invention uses a fluorine-based water repellent that exhibits a water repellent effect even at a low temperature.

The fluorine-based water repellent may be a copolymer in which a fluorine monomer and an alkyl acrylate monomer are copolymerized, wherein the fluorine monomer imparts water repellency. The fluorine-based water repellent may be, for example, a fluoroalkyl acrylate copolymer.

The water-repellent solution (C) may include 2% to 10% by weight of the fluorine-based water-repellent agent and a residual amount of a solvent. However, the content of the fluorine-based water repellent may be changed to an appropriate level and used.

In addition, since the water repellent solution (C) contains a fluorine-based water repellent that exhibits a water repellent effect even at low temperatures, the temperature may be 10°C to 50°C.

Thereafter, the water-repellent yarn (D) may be first dried (S50). It may be preferable to perform the primary drying as soon as the yarn D is discharged from the processing device 41. To this end, a drying device 51 in which primary drying is performed is installed very close to the rear end of the processing device 41, or a predetermined equipment (not shown) in which the processing device 41 and the drying device 51 are integrated is installed. Can be used.

In addition, it may be preferable to perform the primary drying while vibrating the yarn (D). As described above, in the present invention, since the water-repellent treatment is performed on the skein type yarn (B) in which the filament yarns are laminated, the water-repellent liquid (C) must well permeate to the inside of the skein. Therefore, the nozzle is installed inside the treatment device 41 to spray the water-repellent liquid (C) in all directions of the yarn (B), and a vibration generating unit (not shown) is installed in the drying device (51) to By allowing the treated yarn (D) to vibrate during drying, the water repellent (C) was evenly coated on the yarn (D).

The primary drying may be preferably performed at 110 ℃ to 180 ℃. If the temperature is less than the above range, the water repellent (C) may not dry properly, and if it is exceeded, there is a risk of decomposing the water repellent or damaging the yarn.

Short fibers (F) can be obtained by cutting the dried yarn (E) (S60). The cutting device 61 is not particularly limited, and the yarn E is cut through a pair of rolls, or a knife-mounted device may be used.

Finally, the short fibers (F) may be secondary dried (S70). The short fibers (F) may be dried by putting them into an oven 72 or the like with a conveying device 71 such as a conveyor belt. The secondary drying may be preferably performed at 110 ℃ to 180 ℃.

In the present invention, an interior and exterior material for a vehicle can be manufactured using a water-repellent fiber manufactured by the above method. Specifically, the nonwoven fabric is woven with the water repellent fiber, and the nonwoven fabric is pressed with a mold or the like to obtain an interior and exterior material having a predetermined shape.

Hereinafter, the present invention will be described in more detail through specific examples. However, these examples are for illustrative purposes only, and the scope of the present invention is not limited thereto.

Example

A water-repellent fiber (short fiber) was obtained using the above-described method and apparatus, and a nonwoven fabric having a predetermined shape was woven using this. First, polyethylene terephthalate (PET) was used as a raw material, which was melt-spun, stretched, and crimped, and then treated with water repellency. The treatment apparatus and water-repellent treatment conditions were made to conform to those described above. Thereafter, water-repellent fibers (short fibers) were obtained through primary drying, cutting, and secondary drying.

Experimental example

A specimen was prepared by cutting the nonwoven fabric of the above example into 200 mm x 200 mm. It was placed on a horizontal surface and water, coffee, milk, and coke were dropped onto the specimen with a pipette so as to drop about 5 mm of droplets. Three drops of the reagent were dropped from various locations, and the state of the reagent was observed after 30 seconds. The results are shown in Fig. 3 and Table 1.

Item Rating results 1st drop 2nd droplet 3rd droplet water A A A coffee A A A milk A A A Cola A A A

The evaluation criteria in Table 1 are as follows.

A: It is not wet and has a clear droplet boundary

B: There is some wetness at the border

C: Clear wetness, or more than 1/3 wetness

D: completely wet

3 and Table 1, it can be seen that the nonwoven fabric obtained by weaving the water-repellent fiber of the present invention has excellent water repellency to water, coffee, milk, cola, and the like.

The experimental examples and examples of the present invention have been described in detail above, and the scope of the present invention is not limited to the experimental examples and examples described above, and the basic concept of the present invention defined in the following claims Various modifications and improvements of those skilled in the art used are also included in the scope of the present invention.

11: hopper 12: extruder 13: spinneret
21, 21': drawing roll
31: crimping device
41: treatment device 411: chamber 411a: inlet 411b: outlet
412, 412': nozzle
51: drying device
61: cutting roll
71: conveying device 42: oven

Claims (19)

Spinning a raw material containing a polymer resin to obtain undrawn yarn;
Drawing the undrawn yarn to obtain a skein-shaped yarn;
Injecting the yarn into a treatment device, and spraying a water repellent liquid onto the yarn to perform water repellency treatment;
Vibrating and drying the water-repellent yarn; And
Including; cutting the dried yarn to obtain short fibers
The drying step is performed as soon as the water-repellent treated yarn is discharged from the treatment device. The method of claim 1,
The polymer resin includes polyethylene terephthalate (PET), polyethylene naphthalate (PEN), polyimide (PI), and a combination thereof. Fiber manufacturing method. The method of claim 1,
A method of manufacturing a water-repellent fiber for interior and exterior materials of a vehicle, wherein the raw material is melt-spun to obtain undrawn yarn. The method of claim 1,
The method of manufacturing a water-repellent fiber for interior and exterior materials of a vehicle, wherein the yarn is in the form of a skein in which a filament yarn having a fineness of 0.5 to 50 denier is bonded to 1,000 to 10,000 strands. The method of claim 1,
The method of manufacturing a water-repellent fiber for interior and exterior materials of a vehicle further comprising: crimping the yarn before introducing the yarn into a processing device. The method of claim 1,
The processing device is
A chamber including an inlet and an outlet; And
A method of manufacturing a water-repellent fiber for interior and exterior materials of a vehicle comprising a nozzle provided inside the chamber and spraying a water-repellent liquid onto the yarn introduced through the inlet. The method of claim 6,
The nozzle is provided in at least one of the inlet port, the outlet port, and a predetermined position on the moving path of the yarn. The method of claim 6,
The nozzle to the upper and lower sides of the yarn,
The inlet; The outlet; And a method of manufacturing a water-repellent fiber for interior and exterior materials of a vehicle, which is provided at 3 to 5 locations spaced apart by a predetermined distance along the moving path of the yarn. The method of claim 6,
The nozzle is a method of manufacturing a water-repellent fiber for interior and exterior materials of a vehicle having a diameter of 0.5mm to 5mm. The method of claim 6,
The nozzle is a method of manufacturing a water-repellent fiber for interior and exterior materials of a vehicle in which the injection pressure of the water-repellent liquid is 1kgf/cm2 to 10kgf/cm2. The method of claim 6,
A method of manufacturing a water-repellent fiber for interior and exterior materials of a vehicle in which the distance between the nozzle and the yarn is 10 cm to 50 cm. The method of claim 6,
The water-repellent liquid is a method of manufacturing a water-repellent fiber for interior and exterior materials of a vehicle containing a fluorine-based water repellent. The method of claim 6,
The water-repellent liquid is a method of manufacturing a water-repellent fiber for interior and exterior materials of a vehicle in which the temperature is 10 °C to 50 °C. delete delete The method of claim 1,
The drying is carried out at 110 ℃ to 180 ℃ method of manufacturing a water-repellent fiber for interior and exterior materials of a vehicle. The method of claim 1,
The method of manufacturing a water-repellent fiber for interior and exterior materials of a vehicle further comprising the step of drying the short fiber. The method of claim 17,
The method of manufacturing a water-repellent fiber for interior and exterior materials of a vehicle, wherein the drying of the short fibers is performed at 110°C to 180°C. Weaving a nonwoven fabric using the water-repellent fiber manufactured by the method of any one of claims 1 to 13 and 16 to 18; And
A method for manufacturing an interior and exterior material for a vehicle including; manufacturing an interior and exterior material having a predetermined shape using the nonwoven fabric.

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