KR102635335B1 - Translucent artificial leather fabric for vehicle and manufacturing method thereof - Google Patents

Abstract

A light-transmitting artificial leather fabric for vehicles and a method for manufacturing the same are provided. a base layer; and a base layer laminated on the upper side of the base layer and transparent so that light can pass through; and an upper layer laminated on the upper side of the base layer and into which a sol-shaped pigment additive is added; and a surface layer laminated on an upper side of the upper paper layer and having an embossing pattern formed on the surface. Translucent artificial leather for a vehicle may be provided, including a.

Description

Translucent artificial leather fabric for vehicles and manufacturing method thereof {TRANSLUCENT ARTIFICIAL LEATHER FABRIC FOR VEHICLE AND MANUFACTURING METHOD THEREOF}

The present invention relates to a light-transmitting artificial leather fabric for vehicles and a method of manufacturing the same.

In general, because vehicles drive not only during the day but also at night, various types of lamps are placed inside and outside the vehicle. In particular, the interior of the vehicle in which the user directly rides is equipped with various types of lamps in various locations compared to the exterior. In addition to functional lamps such as instrument panel lights and switch lights, there are also various lighting lamps to create an atmosphere such as reading lights and mood lights. It is being used extensively.

Lighting lamps are placed in various ways inside the door trim and crash pad of the vehicle to create an atmosphere inside the vehicle. This conventional lighting lamp has a structure in which a light source is installed inside a panel that forms the door trim and crash pad. In order for a light source emitting light like this to be installed inside the panel of a door trim or crash pad, the surface of the panel is painted on an opaque injection-molded product, surface treatment such as a film insert, and a method of wrapping leather on the surface of the opaque injection-molded product are required. It was processed.

However, this type of vehicle lighting lamp has a structure in which the surface of the interior material of the door trim or crash pad is exposed when the lighting is not used during the day or during normal times, so there is a problem in that the exterior beauty of the vehicle is deteriorated. In other words, there is a problem in that it does not reflect the trend resulting from the advancement of vehicles and the emotional quality of the vehicle deteriorates.

Recently, automotive lighting lamps that can turn the lighting on/off by placing ambient lighting on artificial leather used in panels such as door trims and crash pads are being used. However, in this type of vehicle lighting lamp, the more pigments added to artificial leather, the more vivid the color is expressed, but the light transmittance decreases. Conversely, the smaller the amount of pigment added to artificial leather, the higher the light transmittance, but since the pigment particles are partially projected, the projection quality is low, which reduces marketability. In addition, the particle size of the pigment used in conventional artificial leather is 10 to 30㎛, which causes problems in that the pigment particles clump together or appear empty due to uneven dispersion.

The present invention seeks to provide a light-transmitting artificial leather fabric for vehicles with improved clarity and quality due to improved light transmission and projection, and a method for manufacturing the same.

According to one aspect of the present invention, a base layer; and a base layer laminated on the upper side of the base layer and transparent and capable of transmitting light; and a pigment additive in the form of a sol and laminated on the upper side of the base layer. The upper ground layer where is input; and a surface layer laminated on an upper side of the upper paper layer and having an embossing pattern formed on the surface. Translucent artificial leather for a vehicle may be provided, including a.

According to another aspect of the present invention, in manufacturing a pigment additive, mixing an acrylic resin, a plasticizer, and a processing aid; first mixing the acrylic resin, the plasticizer, and the processing aid blended in a super mixer to obtain 1 Forming a secondary mixture; Adding flame retardants and pigments to the primary mixture and then mixing them in a banbari mixer to form a secondary mixture; Roll milling the secondary mixture 6 to 7 times on a mixing roll or warming roll. forming a tertiary mixture; and performing stand milling of the tertiary mixture 3 to 4 times to form a 4th mixture; and performing basket milling of the 4th mixture 3 to 4 times to form a sol shape. A method for manufacturing light-transmitting artificial leather for vehicles can be provided, which includes the step of completing the pigment additive.

The light-transmitting artificial leather for vehicles of the present invention does not expose the pattern formed on the base layer when the lighting is not turned on, thereby enhancing the interior of the vehicle and improving emotional quality. In addition, the light-transmitting artificial leather for vehicles according to embodiments of the present invention has the characteristic that light is transmitted clearly and evenly when the lighting part emits light, thereby improving the quality of light transmission. In addition, the light-transmitting artificial leather for vehicles according to embodiments of the present invention uses a pigment additive with an average particle size in the nanometer (nm) unit, thereby reducing the amount of pigment used, thereby reducing costs.

Figure 1 is a cross-sectional view of light-transmitting artificial leather for vehicles according to an embodiment of the present invention.
Figure 2 is a comparative diagram between the conventional light-transmitting artificial leather for vehicles and the light-transmitting artificial leather for vehicles shown in Figure 1.
Figure 3 is a block diagram schematically showing the manufacturing method of the pigment additive shown in Figure 1.

Hereinafter, embodiments of the present invention will be described with reference to the attached drawings. However, the following examples are provided to aid understanding of the present invention, and the scope of the present invention is not limited to the following examples. The following examples are provided to more completely explain the present invention to those with average knowledge in the relevant technical field, and detailed descriptions are provided for known configurations that are judged to unnecessarily obscure the technical gist of the present invention. Decided to omit it.

Figure 1 is a cross-sectional view of light-transmitting artificial leather for vehicles according to an embodiment of the present invention.

Referring to FIG. 1, the light-transmitting artificial leather 100 for a vehicle according to this embodiment is applied to the interior of a vehicle, and whether or not the light emits light can be adjusted as needed. The light-transmitting artificial leather 100 for vehicles may be formed in a plurality of layered structures.

Specifically, the light-transmitting artificial leather 100 for vehicles includes a base layer 110, a transparent base layer 120 laminated on the top of the base layer 110, and a colored upper layer 130 laminated on the top of the base layer. And it may include a surface layer 140 that is embossed.

The light-transmitting artificial leather 100 for vehicles has the same appearance as regular artificial leather when the lighting unit 10 is not emitting light, and when the lighting unit 10 is emitting light, light is transmitted and the surface of the light-transmitting artificial leather 100 for vehicles is formed into a specific pattern. It can be expressed as

Hereinafter, each of the above components will be described in more detail.

The base layer 110 is disposed on the lowermost side of the light-transmitting artificial leather 100 for vehicles, and a specific pattern may be formed with a portion through which light transmits and a portion through which light does not transmit. The base layer 110 can support the base layer 120, top layer 130, and surface layer 140 stacked on the upper side, and a lighting unit 10 that emits light is disposed on the lower side of the base layer 110. It can be. The lighting unit 10 may use ambient lighting or LED (Light Emitting Diode). When the lighting unit 10 does not emit light, the light-transmitting artificial leather 100 for vehicles may have the same appearance as general artificial leather.

Preferably, the base layer 110 may be made entirely or partially of one or more of fabrics, knitted fabrics, non-woven fabrics, polyurethane, polyolefin, and polyester, but the base layer (V) applied to the upper side of the base layer 110 120) and is any material that can be flexibly deformed, and is not specifically limited. That is, the base layer 110 supports the base layer 120, top layer 130, and surface layer 140 stacked on the upper side, and can limit the portion through which light is transmitted by a specific pattern formed on the surface.

The base layer 120 is laminated on the base layer 110 and is made of a transparent material, allowing light to pass through. Light generated at the bottom of the base layer 110 is transmitted through the base layer 120, and light can be transmitted to the upper layer 130 stacked on top of the base layer 120. The base layer 120 may be formed in whole or in part from polyvinyl chloride (PVC).

The upper layer 130 is laminated on the lower layer 120, and a pigment additive 131 in the form of a sol may be added. The upper paper layer 130 can be formed to have a specific color by the pigment additive 131 added to the surface. Preferably, the upper layer 130 may be formed in whole or in part from polyvinyl chloride (PVC), which is the same material as the lower layer 120. In other words, the upper layer 130 allows light emitted through the lower layer 120 to be transmitted, thereby imparting a specific color to the light emitted through the light-transmitting artificial leather 100 for vehicles.

The pigment additive 131 may be formed of a mixture of acrylic resin, plasticizer, various processing aids, flame retardants, and pigments. The average particle size of the pigment additive 131 may be 400 to 500 nm. The pigment additive 131 may be formed in a sol shape and dispersed on the surface of the top layer 130. The pigment additive 131 is dispersed on the surface of the top layer 130 and can impart a specific color to the light emitted from the lighting unit 10. Preferably, the pigment additive 131 may be dispersed multiple times to improve light transmission quality by preventing the presence of undispersed particles. In detail, the pigment additive 131 may be dispersed by performing 6 to 7 roll milling, 3 to 4 stand milling, and 3 to 4 basket milling after physical mixing.

Additionally, since the pigment added to the pigment additive 131 imparts color, the color is not limited. The pigment may be formed in whole or in part from carbon, and may have an average particle size of 300 to 400 nm. The pigment additive 131 may contain 20 to 30 wt% of pigment. The detailed manufacturing method of the pigment additive 131 will be explained with reference to FIG. 3.

For example, when the pigment additive 131 is simultaneously dispersed in the base layer 120 and the top layer 130, it is difficult to form the same color each time the base layer 120 and the top layer 130 are manufactured, so color reproduction may be insufficient. You can. When the pigment additive 131 is dispersed in the base layer 120 and the top layer 130 is made transparent, there is a problem in that the vividness of the color is lowered and the light spreads. When the base layer 120 is made transparent and the pigment additive 131 is dispersed in the top layer 130 as in this embodiment, the color can be expressed clearly.

Meanwhile, the surface layer 140 is laminated on the top layer 130, and an embossing pattern may be formed on the surface. The surface layer 140 is disposed on the uppermost side of the light-transmitting artificial leather 100 for vehicles, so that the user can directly contact it. The embossing pattern formed on the surface layer 140 may be similar to the surface of leather, or may be formed with uneven irregularities, or may be formed with shapes, images, and letters. Alternatively, a separate pattern may not be formed on the surface layer 140.

The surface layer 140 may be formed in whole or in part containing one or more of acrylic and urethane. The surface layer 140 can prevent damage to the upper layer 130 from external stimuli such as scratches and contaminants. Additionally, the surface layer 140 can improve the durability of the light-transmitting artificial leather 100 for vehicles.

Figure 2 is a comparative diagram between the conventional light-transmitting artificial leather for vehicles and the light-transmitting artificial leather for vehicles shown in Figure 1. Figure 2 (a) shows the light-emitting state of the conventional light-transmitting artificial leather for vehicles according to Comparative Example 1 in Table 1, and (b) shows the light-emitting state for vehicles according to the embodiment of the present invention according to Example 1 in Table 1. This is the state of the artificial leather being illuminated.

Table 1 below shows measurements of transmittance, luminance, and clarity when conventional light-transmitting artificial leather for vehicles and light-transmitting artificial leather for vehicles according to an embodiment of the present invention were manufactured with the same amount of pigment. Comparative Example 1 is a conventional light-transmitting artificial leather for vehicles, and the average particle size of the pigment additive added is 10 to 30 ㎛, and Example 1 is a light-transmitting artificial leather for vehicles according to an embodiment of the present invention, and the average particle size of the pigment additive added is 400 to 500 nm. am. Sharpness was calculated using the Contrast formula (maximum value - minimum value / maximum value + minimum value).

item Comparative Example 1 Example 1 rate of change Input pigment amount (wt%) 25 25 - Transmittance (%) 4 6 50% increase Luminance (cd/m ² ) 10.0 16.0 60% increase definition 0.25 0.40 60% increase

Referring to Table 1, it can be seen that the transmittance, brightness, and sharpness of Example 1 are improved by approximately 50% or more compared to Comparative Example 1 even though the same amount of pigment is added. That is, referring to FIG. 2 and Table 1, it can be seen that the transmittance, brightness, and clarity of the light-transmitting artificial leather 100 for vehicles according to an embodiment of the present invention are improved compared to conventional products, thereby improving overall quality.

Figure 3 is a block diagram schematically showing the manufacturing method of the pigment additive shown in Figure 1.

Referring to FIG. 3, the manufacturing method of the pigment additive 131 is described as follows.

First, acrylic resin, plasticizer, and various processing aids are mixed in a certain ratio (S-1). Acrylic resin, plasticizer, and various processing aids mixed in a certain ratio are first mixed in a super mixer to form a primary mixture (S-2). After adding the flame retardant and pigment to the primary mixture, secondary mixing is performed in a banbury mixer to form a secondary mixture (S-3). At this time, the pigment is formed of carbon powder and may have an average particle size of 300 to 400 nm. Preferably, the second mixing step (S-3) may be performed under high temperature and high pressure.

The secondary mixture is roll milled 6 to 7 times on a mixing roll or warming roll to form the tertiary mixture (S-4). The tertiary mixture is stand milled 3 to 4 times to form the 4th mixture (S-5). The fourth mixture is basket milled 3 to 4 times to complete the sol-shaped pigment additive 131 (S-6). The pigment additive 131 of this embodiment can be manufactured through a mixing process (S-4, S-5, S-6) performed multiple times to increase the dispersibility of the pigment, which is a nanoparticle. The pigment additive 131 completed in this manner may have an average particle size of 400 to 500 nm.

As described above, the light-transmitting artificial leather 100 for vehicles according to embodiments of the present invention may have the same appearance as general artificial leather when the lighting unit 10 does not emit light, and the lighting unit 10 emits light. When emitting light, the shape may be displayed as a specific pattern formed on the base layer 110. That is, the light-transmitting artificial leather 100 for vehicles of the present invention does not expose the pattern formed on the base layer 110 when the lighting is not turned on, thereby enhancing the interior of the vehicle and improving emotional quality.

In addition, the light-transmitting artificial leather 100 for vehicles according to embodiments of the present invention has the characteristic that light is transmitted clearly and evenly when the lighting unit 10 emits light, thereby improving the quality of light transmission. Conventional light-transmitting artificial leather uses pigments with an average particle size in micrometers (㎛) and produces the pigments in a plate shape. Afterwards, the pigment is laminated together with the backing fabric and laminated on a PVC (Polyvinyl Chloride) sheet to form light-transmitting artificial leather. Conventional light-transmissive artificial leather produced in this way has large average pigment particles and contains undispersed particles, so the colors appear lumpy or empty when illuminated.

However, the light-transmitting artificial leather 100 for vehicles according to embodiments of the present invention uses a pigment with an average particle size in nanometers (nm), and a pigment additive in the form of a sol (131) is added through a number of mixing processes. ) will be produced. The pigment additive 131 is dispersed on the surface of the top layer 130 to form the light-transmitting artificial leather 100 for vehicles. That is, the light-transmitting artificial leather 100 for a vehicle according to an embodiment of the present invention uses a pigment having a smaller particle size than a conventional pigment, and large particles of pigment and undispersed pigment particles are not formed through multiple mixing processes. By doing so, a specific pattern is emitted in a clear and even shape, and the quality of light transmission can be improved.

In addition, the light-transmitting artificial leather 100 for vehicles according to embodiments of the present invention uses a pigment additive 131 with an average particle size in nanometers (nm), which reduces the amount of pigment used, thereby reducing costs. . The light-transmitting artificial leather 100 for vehicles according to an embodiment of the present invention uses a pigment having a smaller particle size than the pigment used to form conventional light-transmitting artificial leather, and can achieve the same color as the conventional color even with a small amount. That is, the amount of pigment input to form the light-transmitting artificial leather 100 for vehicles is reduced, resulting in cost reduction.

Although the embodiments of the present invention have been described above, those skilled in the art can add, change, delete or add components without departing from the spirit of the present invention as set forth in the patent claims. The present invention may be modified and changed in various ways, and this will also be included within the scope of rights of the present invention.

100: Light-transmitting artificial leather for vehicles 10: Lighting unit
110: Base layer 120: Base layer
130: Upper layer 131: Pigment additive
140: surface layer

Claims (7)

A base layer 110 in which a light-transmitting portion and a non-light-transmitting portion are formed in a specific pattern, and a lighting unit 10 emitting light is disposed on the lower side;
An underlayer 120 laminated on the base layer 110 and made transparent so that light can pass through;
An upper layer 130 that is laminated on the upper side of the lower layer 120 and in which a sol-shaped pigment additive 131 formed with an average particle size of 400 to 500 nm is dispersed and disposed multiple times on the surface; and
It includes a surface layer 140 that is laminated on the top of the upper paper layer 130 and has an embossing pattern on the surface,
The pigment additive 131 is,
Translucent artificial leather for vehicles containing 20 to 30 wt% of a pigment formed of carbon powder with an average particle size of 300 to 400 nm. delete delete In claim 1,
The pigment additive 131 is,
Light-transmitting artificial leather for vehicles formed by mixing acrylic resin, plasticizer, processing aid, flame retardant, and pigment. In claim 1,
The base layer 120 and the top layer 130 are,
Light-transmitting artificial leather for vehicles made entirely or partially of PVC (Polyvinyl Chloride). In claim 1,
The pigment additive 131 is,
Mixing acrylic resin, plasticizer, and processing aid;
Forming a primary mixture by first mixing the blended acrylic resin, the plasticizer, and the processing aid in a super mixer;
Forming a secondary mixture by adding a flame retardant and a pigment to the primary mixture and secondary mixing in a Banbari mixer;
Roll milling the secondary mixture 6 to 7 times on a mixing roll or warming roll to form a tertiary mixture;
Forming a fourth mixture by performing stand milling on the third mixture three to four times;
A light-transmitting artificial leather for vehicles formed by performing basket milling of the quaternary mixture 3 to 4 times to complete the pigment additive 131 in the form of a sol. delete