KR20010008119A - Wallpaper for Automobile and Manufacturing Method - Google Patents

Abstract

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to automotive interior materials, and more particularly, to epidermal finishes such as car headliners, door trims, seats, and the like and methods of manufacturing the same. This automobile interior material is obtained by forming at least two print processes in different patterns on the surface of nonwoven felt obtained by needle punching or water-flow coupling in a different pattern to obtain a high quality and diverse design, and at the same time two or more continuous prints using a binder Machining increases the surface wear strength and provides the antifouling effect of the nonwoven felt.

Description

Automobile interior materials and its manufacturing method {Wallpaper for Automobile and Manufacturing Method}

The present invention relates to an automobile interior material and a method for manufacturing the same, and more particularly, to a surface of a nonwoven fabric felt obtained by needle punching or through-bonding. The present invention relates to an automobile interior material and a method of manufacturing the same, which can be expressed in a variety of designs and improves surface wear strength and prevents contamination of nonwoven felts.

In general, automotive non-woven interior materials are mainly manufactured by the needle punching process and some of the water flow coupling.

Non-woven fabric is a kind of fiber that is not squeezed by using warp and weft like cloth, and spreads fibers of a certain thickness and length thinly and broadly by using carding process, and then overlaps several layers, such as needle punching or water flow coupling. Fibers bonded by chemical means by physical bonding or chemical coating, which are more productive than cloth, inexpensive, and have excellent elongation in various directions. It is widely used on the back.

These nonwovens have been used for many years in overseas and domestic automobiles, and many developments and modifications have been made in the technology.

In the early days, the fiber layer was simply combined with needle punching, and recently, the binder was coated on the surface and the back to give functionality, or the surface was diversified with a constant pattern and color obtained by printing the surface by one degree (one color). have.

However, in the case of the non-woven fabric interior material printed with such a 1-degree printing, since it is molded in a limited pattern shape, the use range is limited to the automotive interior material which requires a simple external appearance due to its simple appearance, and excludes the portion where the pattern is printed. There is a problem that the surface is easily crushed and contaminated after use because the wear strength of the remaining portion is low.

Nonwoven fabrics for automobile interiors are thicker and partially different in thickness than fibers (fabrics, fabrics). In particular, the nonwoven fabric is characterized by a thin process at the center of the production direction and a thick edge at the production process.

Therefore, the print deviation of the center part and the edge part at the time of a print process arises by the thickness difference of this nonwoven fabric.

In FIG. 1, such a printing deviation state is illustrated. The center portion of the nonwoven fabric 1 is thin and the virtual seat portion is formed in a thick layer rather than the center portion to be disposed in the space between the guide roll 16 and the rotating screen 2. At this time, a deviation space 18 is generated due to the thickness deviation of the nonwoven fabric 1 in the central portion, and a print deviation occurs on the surface of the central portion, whereby the print state becomes poor and the workability is deteriorated.

The present invention was created in order to solve such a conventional problem, the object of which is to increase the wear strength and contamination by continuous print molding using at least two binders in the nonwoven fabric by needle punching or water flow coupling used as automotive interior materials It is to provide a vehicle interior material and a method of manufacturing the same that can be prevented, to obtain a variety of appearances to achieve high-quality products.

Still another object of the present invention is to provide a low-cost automotive interior nonwoven fabric by preventing surface needle marks and water flow coupling marks of nonwoven felt manufactured at a faster production speed than conventional nonwoven felt by two or more print processes.

In order to achieve the above object, the present invention is characterized in that different patterns and different color layers are formed on one surface of the nonwoven felt obtained by needle punching and water flow coupling.

In addition, in order to achieve the above object is characterized in that the printed on the surface of the nonwoven felt formed by needle punching and water flow coupling in different patterns and different colors by at least two consecutive print processing.

1 is a non-woven fabric printing main process drawing by the conventional guide roll (Guide Roll),

2 is a cross-sectional view of a main portion of a continuous printing process according to the present invention;

3 is a process chart of a continuous printing state according to the present invention,

4 is a main portion of the printing process of the guide roll according to the present invention (Guide Roll),

5 is a principle diagram of the needle punching process of the present invention,

6 is a principle diagram of the water flow coupling process of the present invention.

Explanation of symbols on main parts of drawing

One; Nonwoven felt 2; Rotating screen

3; Guide roll 4; Squeeze bar

5; Colorbinder 6; Binder Feeder

7,9; Print unit 8; Magnet

19; Fiber aggregate 20; Needle board

21; Needle 22; Section 3 Link Mechanism

24; Nozzle box 25; water flow

26; Pressure valve 27; Resupply unit

28; Filtration device 29; Pressure generator

30; Drying device

Hereinafter, with reference to the accompanying drawings will be described in detail with respect to the present invention.

5 is a principle diagram of the needle punching process of the present invention, Figure 6 is a principle diagram of the water flow coupling process of the present invention.

Referring to Figure 5, the non-woven felt used in the present invention is a needle that is vertically moved by the three-link mechanism 22 while the fiber assembly 19, which is stacked in multiple layers are transferred to the lower portion of the needle (needle) board 20 It is obtained by a needle punching process in which the fiber assembly 19 is molded by the needles 21 provided on the board 20.

In addition, referring to Figure 6, a multi-ply overlapping fiber assembly 19 to be conveyed to the conveyor belt is a water flow 25 (high pressure water stream) is injected by the water supply nozzle box 24 penetrates the fiber assembly 19 Therefore, the fibers are bonded to a predetermined density to form a predetermined shape, and the injected water flow is stored and pressure-generated through the resupply device 27 in the filtration device 28 (reuse after the water flow combination). Through the re-injection process to the nozzle box 24 by the pressure valve 26 is achieved. Therefore, the water-flow-bonded nonwoven fabric felt 23 is formed and dried while passing through the drying apparatus 30 to achieve a water-flow coupling process of obtaining a finished product.

2 is a cross-sectional view of a main portion of a continuous printing process according to the present invention, and FIG. 3 is a process diagram of a continuous printing state according to the present invention.

As shown in Figs. 2 and 3, the present invention allows at least two continuous printing processes on the surface of the nonwoven felt 1 obtained by needle punching or water flow coupling.

The continuous printing process corresponds to the rotary (rotary) screen 2 and the guide roll (3) and to another side of the print unit (7) of the same type by placing the nonwoven fabric felt (1) A squeeze bar (4) having a color binder (5) discharged through the binder feeder (6) mounted in the rotary screen (2) and disposed in the longitudinal direction when passing between the rotary screen (2) and the guide roll (3). Pressed by a bar) and part of it flows out to the outer surface of the rotating screen 2, so that the surface of the nonwoven fabric felt 1 has a predetermined pattern including color.

Since the squeeze bar 4 is disposed in the magnetic range of the magnet 8 (electromagnet) disposed inside the guide roll 3, the squeeze bar 4 is disposed at a predetermined position corresponding to the color binder 5. Outflow of the rotating screen (2) to enable the paint.

At this time, by adjusting the magnetic strength of the magnet (electromagnet) 8, it is possible to adjust the sharpness of the printed pattern. Here, if the magnetic force of the magnet 8 is strong, the pattern is printed dark and vivid, and if the magnetic strength is weak, the pattern is faintly printed.

2 shows a process printed by a continuous process.

When the nonwoven fabric felt 1 of the shapeless 13 passes the 1 degree printing unit 9, the 1 degree inclination printed pattern 14 is formed by the 1 degree printed pattern 11 provided in the surface, and 1 After the next step, the nonwoven fabric felt 1 is continuously moved, and the first degree inclined print pattern 14 and the symmetrical second degree printed pattern 12 provided on the surface of the nonwoven fabric felt 1 are passed through the second degree printing unit 10. If another pattern is posted, the finished nonwoven fabric 15 is mixed with 1 degree and 2 degrees.

The finished nonwoven fabric 15 is manufactured in such a manner that at least two or more continuous paints are processed on the surface, and a suitable amount of dyes and pigments are mixed in a binder and printed in a desired color to produce a variety of existing monotonous appearances. In addition, two or more continuous print processing makes the existing monotonous appearance various and luxurious, and achieves two or more continuous printing processing.

In addition, needle prints and water-flow coupling marks on the surface of the nonwoven fabric felt produced at a faster production speed than the existing nonwoven fabric felt (1) are prevented from appearing more than two times to obtain a non-woven interior material for automobiles having a low-cost and beautiful appearance. Can be.

The nonwoven felt 1 has a weight of 50 to 300 g / m 2, and the fibers constituting the nonwoven felt 1 include polyester, polypropylene, viscose rayon, and nylon. (Nylon), polycral, polyamide, polyvinyl chloride, synthetic fibers such as one or two or more of natural fibers such as cotton, hemp, wool, silk, and carbon ought.

In the needle punching production, the nonwoven fabric felt 1 has 3 to 8 needle punching machines, a punching density of 250 to 500 st / cm 2, and a fiber layer penetration depth of the needle of 3.0 to 12.5 mm.

If the needle punching machine is less than three units, the binding stability is insufficient, and if more than eight units, the binding force becomes good, but it is uneconomical due to excessive facility cost. And when the punching density is 250st / cm2 or less, the wear strength will be weakened. If the punching density is more than 500st / cm2, the needle marks will be severe and the appearance will not be beautiful, and there is a risk of damage.

On the other hand, the nonwoven felt 1 has a diameter of an orifice nozzle of 0.01 to 0.25 mm, a water flow pressure of 100 to 210 kg / cm 2, a gap between the nozzle and the fiber layer of 1.0 to 9.0 cm, The gap between the nozzles in the nonwoven fabric traveling width direction is 0.1 to 2.5 mm, the diffusion angle of the water flow injected by the nozzle is 5 degrees or less, and the number of water flow couplings (number of nozzle boxes) is 2 to 8 times.

Here, if the pressure of the water flow is 100kg / cm2 or less, the binding force is insufficient, and if it is 210kg / cm2 or more, the marks are severe and the appearance is not faint, and there is a fear of damage.

Acrylic, styrene, polyvinyl chloride, polyvinyl alcohol, polyester, ethylene vinyl chloride, ethylene vinyl acetate during the printing process of the nonwoven felt (1) Among the emulsions such as (Ethylenevinylacetate) and polyurethane (Polyurethane), various colors can be beautifully printed using a binder composed of one or two or more emulsions.

In the case of two or more continuous print processes, it is preferable that the print heads are 2 to 10 and are continuously worked and dried.

The print method of the print head of the present invention prints a rotary (rotary) screen method, a flat screen method, an offset method, and the like in one or several ways.

4 is a main drawing process diagram of the guide roll (Guide Roll) according to the present invention.

When the print method of the print head is a rotary (rotary) screen method, a print deviation may be generated due to a thickness variation of the nonwoven fabric 1 using a soft material such as rubber or silicon as the material of the guide roll 17. You can prevent it.

In other words, the nonwoven fabric used for automobile interiors is manufactured by needle punching or water-flow coupling after stacking the fiber strands thinly and broadly and stacking them in multiple layers without using a warp and weft yarn like fibers (cloth, fabric).

Nonwoven fabrics for automobile interiors are thicker and partially different in thickness than fibers (fabrics, fabrics).

In particular, the nonwoven fabric is characterized by a thin process at the center of the production direction and a thick edge at the production process.

Therefore, the print deviation of the center part and the edge part at the time of a print process arises by the thickness difference of this nonwoven fabric.

In the present invention, when the material of the guide roll 17 for advancing the nonwoven fabric 1 is changed from a hard material such as steel to a soft material such as rubber or silicon, the thickness deviation of the nonwoven fabric is changed. A soft roll can absorb and make uniform printing.

The printing method which can continuously print the surface of the nonwoven fabric 1 is not specifically defined in the present invention, but the rotary (rotary) screen method has a high production speed and a magnet of a squeeze bar (4). (8) The pressure is adjustable, making it suitable for continuous printing of thick felts, such as nonwovens.

However, in the present invention, a printing method is used to produce a nonwoven fabric having various and luxurious appearances with the purpose of supplying a low-cost nonwoven fabric material by producing a nonwoven fabric felt 1 at a high speed and a function of preventing wear strength and contamination. It is advantageous to process by.

For example, by printing the print of FIG. 2 by a flat screen method and printing the print of FIG. 3 by a rotary (rotary) screen method, a more diverse and luxurious appearance can be obtained.

In the present invention, the open area is defined as 40 to 90% at the time of printing.

The open area is not blocked, the print screen is opened in a constant pattern, the binder is prepared in a suitable color when printing out there is printed in a predetermined pattern and color on the surface of the nonwoven fabric.

At this time, when the open area is 40% or less, the surface wear strength of the nonwoven fabric is poor.

This is because the portion printed with the binder has a relatively good wear strength, but the portion not printed has the same low wear strength as the nonwoven felt.

However, when the open area becomes 90% or more, the surface touch becomes rough, which deteriorates the value as an interior material for automobiles.

The nonwoven fabric interior material for automobiles manufactured by the present invention can supply various and luxurious appearances required by automotive interior materials by performing continuous printing process using at least two or more binders, and wear strength, which is a disadvantage of the conventional automotive nonwoven fabric interior materials, And contaminants can be improved.

In addition, at least two times the printing process performed in the present invention can produce a non-woven felt at a high speed, because it can prevent the degradation of the quality by hiding the stripes generated by producing at a faster production speed than the existing nonwoven fabric felt, Compared to non-woven chelts, high-speed production is possible, resulting in lower production costs.

Claims (11)

In the nonwoven fabric used for automobile nonwoven interior material, An automotive interior material, characterized in that different patterns and different color layers are formed on one surface of a nonwoven felt obtained by needle punching and water flow coupling. The method according to claim 1, The different patterns and different color layers cover the needle marks and the water flow coupling marks on the nonwoven felt surface. The method according to claim 1, The nonwoven felt has a weight of 50 to 300 g / m 2, and the fibers constituting the nonwoven felt are polyester, polyprophylene, viscose rayon, nylon, polychloral Automotive interior material comprising one or two or more of synthetic fibers such as polycral, polyamide, polyvinylchloride, and natural fibers such as cotton, hemp, wool, silk, and carbon . In forming the nonwoven fabric used for automobile nonwoven interior material, A method of manufacturing an automotive interior material, characterized in that printed on the surface of the nonwoven felt formed by needle punching and water flow bonding in different patterns and different colors by at least two consecutive printing processes. The method according to claim 4, The nonwoven felt has a needle punching machine having a needle punching machine of 3 to 8, a punching density of 250 to 500 st / cm 2, and a fiber layer penetration depth of the needle of 3.0 to 12.5 mm. Manufacturing method. The method according to claim 4, In the nonwoven fabric felt, the diameter of the orifice nozzle is 0.01 to 0.25 mm, the pressure of the water flow passing through the nozzle is 100 to 210 kg / cm 2, the gap between the nozzle and the fiber layer is 1.0 to 9.0 cm. Of the interior of the vehicle, characterized in that the gap between the nozzles is 0.1 to 2.5 mm, the diffusion angle of the water flow injected by the nozzle is 5 degrees or less, and the number of water flow couplings (number of nozzle boxes) is 2 to 8 times. Way. The method according to claim 4, Acrylic, Styrene, Polyvinylchloride, Polyvinylalcohol, Polyester, Ethylenevinylcloride, Ethylenevinylacetate In the process of manufacturing an automobile interior, characterized in that the printing using a binder consisting of one or two or more of the emulsions, such as polyurethane (polyurethane). The method according to claim 4, A method for producing an automotive interior material, characterized in that, during two or more consecutive printing operations, an open area representing a portion to be printed on the nonwoven felt is 40 to 90%. The method according to claim 4, In the case of the two or more continuous print processing, the manufacturing method of the automotive interior, characterized in that 2 to 10 print heads and continuously working and drying. The method according to claim 9, The printing method of the print head is a method of manufacturing a vehicle interior, characterized in that for printing a rotary (rotary) screen method, a flat screen method, an offset method and the like mixed one or several methods. The method according to claim 10, When the print method of the print head is a rotary (rotary) screen method, using a soft material such as rubber silicone as the material of the guide roll (Guide Roll) characterized in that to prevent the occurrence of print deviation due to the thickness variation of the nonwoven fabric Method for manufacturing automotive interior materials.