KR20230167212A - fabric for combination type blackout blinds to realize pure white color - Google Patents

Abstract

The fabric for a combination type blackout blind according to the present invention has a structure in which light-shielding portions and light-transmitting portions are formed alternately. The light-shielding portion is formed between a pair of outer layers having polyester LM (low melt) yarns as warp yarns and polyester FD (full dull) yarns as weft yarns, and polyester LM yarns as warp yarns and intermediate yarns as weft yarns. It may have a three-layer structure including a middle layer. The polyester FD yarn may be a high multi-filament yarn of 400d to 500d consisting of 200 to 250 filaments that is ITY processed by plying a plurality of white dyed yarns and then DTY processed. The cross section of the intermediate yarn may include a light-absorbing layer containing carbon black dope-dyed yarn and a white-colored light-reflecting layer surrounding the light-absorbing layer.

Description

Fabric for combination type blackout blinds to realize pure white color {fabric for combination type blackout blinds to realize pure white color}

The present invention relates to a fabric for combination-type blackout blinds. More specifically, the cross-section of the intermediate yarn constituting the intermediate layer provided between a pair of outer layers in the light-shielding portion is composed of a light absorption layer and a light reflection layer surrounding it, realizing pure white color. This relates to fabric for easy combination type blackout blinds.

Blinds are installed in glass windows or glass wall spaces such as living rooms, bedrooms, and offices to block external light or line of sight entering the room or to control the amount of light. There are various types of blinds depending on their structure and material, such as roll blinds, wood blinds, and vertical blinds. Combi-type blinds, which are double roll blinds, are often used.

Typically, a combination type blind fabric is made of a mesh material and has a structure in which light-transmitting parts that can transmit light and light-blocking parts that are made of multi-weave and can block light are formed alternately in the vertical direction.

The light-shielding part includes a middle layer of dyed yarn mixed with carbon black to prevent light from penetrating through the numerous fine gaps between the fibers in the outer layer. At this time, most of the light incident on the blind is absorbed in the middle layer but is reflected in the surface layer. However, especially if the surface layer is white, the black color of the middle layer is exposed between the fibers of the outer layer, making it difficult to implement pure white.

Accordingly, the technical problem to be solved by the present invention is to provide a fabric for a combination type blackout blind that realizes a pure white color by wrapping the outer periphery of the carbon black dyed yarn constituting the middle layer with a white light reflection layer.

The technical problems to be achieved by the present invention are not limited to the technical problems mentioned above, and other technical problems not mentioned can be clearly understood by those skilled in the art from the description below. There will be.

The fabric for a combination type blackout blind that implements pure white color according to the present invention to solve the above technical problem includes light-shielding portions and light-transmitting portions alternating in the longitudinal direction.

The light-shielding portion includes a pair of outer layers made of polyester LM (low melt) yarns as warp yarns and polyester FD (full dull) yarns as weft yarns; And it may have a three-ply weave structure including an intermediate layer between the pair of outer layers using polyester LM yarns as warp yarns and intermediate yarns as weft yarns.

The polyester FD yarn may be ITY-processed by plying a plurality of white dyed yarns and then DTY-processed. The cross section of the intermediate yarn includes a light absorption layer containing carbon black dope-dyed yarn; And it may include a white color light reflection layer surrounding the light absorption layer.

The polyester FD yarn contains 2.5% to 3% of TiO ₂ and is preferably a high multi-filament yarn of 400d to 500d consisting of 200 to 250 filaments.

The plurality of white dyed yarns may include at least one flat cross-section yarn and at least one circular cross-section yarn.

The light reflection layer may be a white colored PVC coating layer.

The light reflection layer may be a white-colored double-effect yarn layer that is double-covered with the core sign carbon black dyed yarn in opposite directions. At this time, the light reflection layer may further include a white PVC coating layer surrounding the double effect layer.

The double effect yarn may have a twist number of 300 TPM to 800 TPM.

The pair of outer layers and the middle layer may have an inclined rib-stop structure.

The fabric for a combination type blackout blind according to the present invention, which is implemented as a three-ply weave, is wrapped in a light-shielding portion around the outer periphery of the carbon black dyed yarn constituting the weft of the middle layer with a white color light-reflecting layer, and the white dyed yarn is twisted and ITY processed. Since it contains DTY processed high multi-filament yarn as the outer weft yarn, it can provide very high whiteness.

Figure 1 shows a combination type blackout blind 10 including a fabric for a combination type blackout blind that implements pure white color according to the present invention.
Figure 2 is a cross-sectional view showing the structure of the fabric 50 for a combination type blackout blind according to the present invention.
Figure 3 shows the first polyester FD yarn 54 processed with line ITY and post-DTY applied to the fabric 50 for a combination type blackout blind according to the present invention and the first polyester FD yarn 54 processed with line DTY and post-ITY according to a comparative example of the present invention. This is a photo taken of the side of the second polyester FD yarn (54').
Figure 4 is a cross-sectional photograph of the fabric 50 for a combi-type blackout blind to illustrate the structure of the outer layer 51 of the fabric 50 for a combi-type blackout blind according to the present invention.
Figure 5 is a conceptual diagram for explaining the structure of the intermediate yarn 55 constituting the weft yarn of the intermediate layer 52 of the fabric 50 for a combination type blackout blind according to the present invention.
Figure 6 is a cross-sectional photograph of the fabric 50 for a combination type blackout blind according to the present invention to illustrate the intermediate yarn 55 according to (a) of Figure 5.
Figure 7 is a photograph for visually comparing the color of the carbon black dyed yarn and the intermediate yarn manufactured according to (a) of Figure 5 and the intermediate yarn manufactured according to (b) of Figure 5.
Figure 8 is a photograph for explaining the tissue structure of the fabric 50 for a combination type blackout blind according to the present invention and the tissue structure of an existing fabric.
Figure 9 is a test report measuring the CCM L value for the fabric 50 for a combination type blackout blind according to Examples 1 and 2 of the present invention.

In order to fully understand the present invention, its operational or functional advantages, and the objectives achieved by practicing the present invention, reference should be made to the accompanying drawings illustrating preferred embodiments of the present invention and the contents described in the accompanying drawings.

Hereinafter, the present invention will be described in more detail with reference to the attached drawings. Since the present invention can be subject to various changes and have various forms, specific embodiments will be illustrated in the drawings and described in detail in the text. However, this is not intended to limit the present invention to a specific disclosed form, and should be understood to include all changes, equivalents, and substitutes included in the spirit and technical scope of the present invention.

While describing each drawing, similar reference numerals are used for similar components. In the attached drawings, the dimensions of the structures may be enlarged or reduced from the actual size for clarity of the present invention.

Terms such as first, second, etc. may be used to describe various components, but the components should not be limited by the terms. The above terms are used only for the purpose of distinguishing one component from another. For example, a first component may be referred to as a second component without departing from the scope of the present invention, and similarly, the second component may also be referred to as a first component. Singular expressions include plural expressions unless the context clearly dictates otherwise.

In this application, terms such as “comprise” or “have” are intended to designate the presence of features, numbers, steps, operations, components, parts, or combinations thereof described in the specification, but are not intended to indicate the presence of one or more other features. It should be understood that this does not exclude in advance the possibility of the existence or addition of elements, numbers, steps, operations, components, parts, or combinations thereof.

Additionally, unless otherwise defined, all terms used herein, including technical or scientific terms, have the same meaning as generally understood by a person of ordinary skill in the technical field to which the present invention pertains. Terms defined in commonly used dictionaries should be interpreted as having a meaning consistent with the meaning in the context of the related technology, and unless clearly defined in the present application, should not be interpreted in an ideal or excessively formal sense. No.

Figure 1 shows a combination type blackout blind 10 including a fabric for a combination type blackout blind that implements pure white color according to the present invention.

The combination type blackout blind (10) is wound in two layers on the front and back between the winding bar (20) at the top and the weight bar (30) at the bottom, and is made of a mesh material, including a light transmitting part (30) that can transmit light. , It is composed of a combination type blackout blind fabric 50 and an operating line 60 in which light-shielding parts 40, which are made of multiple weaves and can block light, are formed alternately in the vertical direction.

When the operating line 60 is pulled, the winding rod 20 rotates forward or backward to position the light transmitting portions 30 on the front and back sides of the fabric 50 in a straight line, so that external light flows into the inside, and the front If the light transmitting part 30 and the rear light blocking part 40 are positioned in a straight line, external light can be blocked.

Figure 2 is a cross-sectional view showing the structure of the fabric 50 for a combination type blackout blind according to the present invention.

The light blocking portion 50 has a three-layer woven structure including a pair of outer layers 51 and an intermediate layer 52 provided between the pair of outer layers. In the pair of outer layers 51, the warp yarn 54 may be polyester LM (Low Melt) yarn, and the weft yarn 53 may be polyester FD (full dull) yarn.

The polyether LM yarn is a low melting point yarn, and when it goes through a heat setting process of 180°C to 200°C performed after weaving the fabric, it melts and then solidifies, contributing to maintaining the shape stability of the fabric 50 for combi-type blackout blinds, and the weft yarn By filling the gap between and the slope, color reflection of the middle layer 52 in the light blocking portion 50 can be blocked, thereby contributing to improving whiteness.

The polyester FD yarn may be obtained by plying a plurality of white colored yarns (for example, 2 to 3 strands), processing them into interlaced yarn (ITY), and then processing them into drawn textured yarn (DTY). This is to maintain the excellent focusing power of the filament yarn while minimizing inter marks that occur during the filament yarn entanglement formation process.

Typically, polyester FD yarn used in the manufacture of fabric for blinds is subjected to DTY processing and then ITY processing, because in this case, the inter marks are bound to remain stronger than in the present invention.

Figure 3 shows the first polyester FD yarn 54 processed with line ITY and post-DTY applied to the fabric 50 for a combination type blackout blind according to the present invention and the first polyester FD yarn 54 processed with line DTY and post-ITY according to a comparative example of the present invention. This is a photo taken of the side of the second polyester FD yarn (54').

Comparing FIG. 3, it can be seen that inter marks are barely discernible in the first polyester FD yarn 54, but inter marks clearly remain in the second polyester FD yarn 54'.

In other words, when polyester FD yarn subjected to line ITY processing followed by DTY processing according to the present invention is applied, the show-through phenomenon caused by inter marks is reduced, resulting in a pure white color compared to polyester FD yarn subjected to line ITY processing after line DTY processing. It can also provide easier effects.

In addition, the polyester FD yarn contains 2.5% to 3% TiO ₂ and has TiO ₂ compared to SD (semi dull) yarn. Due to its high content, it has a UV blocking function and is effective in preventing the middle layer color from showing through, making it easy to create pure white color.

And the polyester FD yarn is preferably a 400d to 500d high multi-filament yarn consisting of 200 to 250 filament yarns. Here, high multi-filament yarn refers to a significantly larger number of filaments, considering that the polyester FD yarn used in blind fabrics is usually 400d to 500d, consisting of about 100 to 150 filament yarns. .

Using high filament yarn like this makes the fabric much softer than using regular polyester FD yarn, and the abundant filaments prevent the color from showing through in the middle layer 52, which is advantageous for realizing pure white color.

A plurality of white dyed yarns constituting the polyester FD yarn may be obtained by plying at least one flat cross-section yarn and at least one circular cross-section yarn, followed by ITY processing and then DTY processing. This will be discussed below with reference to FIG. 4.

Figure 4 is a cross-sectional photograph of the fabric 50 for a combi-type blackout blind to illustrate the structure of the outer layer 51 of the fabric 50 for a combi-type blackout blind according to the present invention.

The weft 53 of the outer layer 51 is ITY processed by plying a circular cross-section yarn 53-1 dyed in white color and two strands of flat cross-section yarns 53-2 and 53-3 dyed in white color. After DTY processing. It can be seen that the weft 53 is a mixture of filaments with a circular cross-section and filaments with a flat cross-section.

In this way, when flat cross-section yarns and circular cross-section yarns are ITY processed to form filament entanglements, the fabric for combination type blackout blinds (50 ) is advantageous for pure white. This is because the light reflectance of the combination type blackout blind fabric 50 can be higher and the black color blocking rate of the middle layer 52 can be higher.

The middle layer 52 uses polyester as the warp yarn and LM yarn as the warp yarn, and the intermediate yarn 55 as the weft yarn. The intermediate yarn 55 basically includes carbon black dyed yarn and has a light absorption function to block light from penetrating the fabric 50 for the combination type blackout blind. However, when the black color of the carbon black dyed yarn 55 is reflected between the fibers of the outer layer 51, the whiteness of the combination type blackout blind fabric 50 is reduced.

Therefore, in order to improve whiteness, the intermediate yarn 55 includes a light-absorbing layer whose cross-section is made of the carbon black dope-dyed yarn and a white-colored light-reflecting layer surrounding the light-absorbing layer.

Figure 5 is a conceptual diagram for explaining the structure of the intermediate yarn 55 constituting the weft yarn of the intermediate layer 52 of the fabric 50 for a combination type blackout blind according to the present invention. Figure 6 is a cross-sectional photograph of the fabric 50 for a combination type blackout blind according to the present invention to illustrate the intermediate yarn 55 according to (a) of Figure 5. Figure 7 is a photograph for visually comparing the color of the carbon black dyed yarn and the intermediate yarn manufactured according to (a) of Figure 5 and the intermediate yarn manufactured according to (b) of Figure 5.

The intermediate yarn 55 in (a) of Figure 5 is a black carbon dope-dyed yarn (55-1) that serves as a light absorption layer to block light transmission to the combination type blackout blind fabric 50 and the carbon black dope-dyed yarn. It includes a white colored PVC coating layer (55-2) that surrounds (55-1) and forms a light reflection layer.

The PVC coating layer (55-2) blocks the black color of the carbon black dyed yarn (55-1) from being seen through the outer layer (51), thereby realizing the pure white color of the combination type blackout blind fabric (50). Contribute.

The intermediate yarn 55 in Figure 5 (b) is a light absorption layer and is a white color double effect yarn 55-3 and a core sign carbon black dyed yarn 55-1 covered in two layers in opposite directions. 55-4) layer is included as a light reflection layer. The double effect yarn (55-3 and 55-4) layers block the black color of the carbon black dyed yarn (55-1) from being seen through the outer layer (51), thereby forming the combination type blackout blind fabric (50). Contributes to the realization of pure white color. The double effect yarns (55-3 and 55-4) may be polyester FD yarns.

The intermediate yarn 55 in Figure 5 (c) further includes a white colored PVC coating layer (55-2) surrounding the double effect yarn (55-3 and 55-4) layers in the example in Figure 5 (b). Including, it is possible to more reliably implement the pure white color of the fabric 50 for the combination type blackout blind.

The double effect yarns (55-3 and 55-4) must be wound around the outer periphery of the carbon black dyed yarn (55-1) with an appropriate twist number. If wound with a low twist number, the carbon black dyed yarn (55-1) The function of blocking the black color of 1) from being seen is weakened, and if it is wound with too high a twist, the strength of the covering yarn may weaken and the fabric 50 for the combination type blackout blind may become stiff, so double effect yarn (55-3) and 55-4) are preferably wound with a twist number of 300TPM to 800TPM.

Referring to FIG. 7, a white colored PVC coating layer (55-2) is wrapped around the carbon black dyed yarn 55-1 according to (a) of FIG. 5, or a white color effect is applied according to (b) of FIG. 5. When double covering is performed with a yarn, it can be seen that most of the black color is blocked even in the intermediate yarn 55 itself. Therefore, according to them, it can be much easier to implement pure white color of the fabric 50 for combination type blackout blinds.

Meanwhile, the example in Figure 5(c) applies both the processing of Figures 5(a) and Figure 5(b), so it will be more suitable for implementing the pure white color of the fabric 50 for combination type blackout blinds. This would be self-evident to those skilled in the art.

Figure 8 is a photograph for explaining the tissue structure of the fabric 50 for a combination type blackout blind according to the present invention and the tissue structure of an existing fabric.

The fabric 50 for the combination type blackout blind includes polyester LM yarn in its warp yarn, but when exposed to sunlight or high temperature for a long time, a problem may occur in which the strength of the solidified portion of the LM yarn is weakened.

Accordingly, in order to compensate for the weakening of the tear strength and tensile strength (especially in the weft direction), the combination type blackout blind fabric 50 has an inclined rib-stop tissue structure, as shown in (a) of Figure 5. has In contrast, existing fabrics have a simple plain weave structure as shown in (b) of Figure 5. Therefore, the fabric 50 for a combination type blackout blind according to the present invention having an inclined rip-stop structure can have greater strength than the existing fabric having a plain weave structure.

<Example 1, 2>

In Example 1, the common warp yarn for the outer and middle layers was polyester LM yarn 20/1 (density 9720 yarn), the weft yarn for the outer layer was white dyed polyester DTY 450/216 FD (3 sets), and the middle layer was polyester DTY (carbon black). It was woven in a triple-straight rip-stop structure using 300d intermediate yarns double-covered with white dyed polyester 75d FD on 2 sets of dyed yarns (containing 2.5% by weight).

And in Example 2, only the intermediate yarn in Example 1 was changed to a 300d intermediate yarn made of polyester DTY (containing 2.5% by weight of carbon black) coated with white colored PVC and woven in a triple weave rip-stop structure.

Figure 9 is a test report measuring the CCM L value for the fabric 50 for a combination type blackout blind according to Examples 1 and 2 of the present invention.

Referring to Figure 9, it can be seen that the fabric 50 for a combination type blackout blind according to Examples 1 and 2 according to the present invention has an L value of at least 90 or more and has very excellent whiteness. Meanwhile, through other tests, it was confirmed that the fabric 50 for a combination type blackout blind according to Examples 1 and 2 had a blackout degree of more than 99%, and that the basic performance as a blackout blind was also very excellent.

As described above, although the present invention has been described with reference to limited embodiments and drawings, the present invention is not limited to the above embodiments, and various modifications and variations can be made from these descriptions by those skilled in the art. This is possible.

Therefore, the scope of the present invention should not be limited to the described embodiments, but should be determined by the claims and equivalents thereof as well as the claims described later.

10: Combi type blackout blind 20: Winding rod
30: light transmitting part 40: light blocking part
50: Fabric for combination type blackout blind 60: Operating line

Claims (6)

Light-shielding and light-transmitting parts are formed alternately,
The light blocking part,
A pair of outer layers made of polyester LM (low melt) yarns as warp yarns and polyester FD (full dull) yarns as weft yarns; And it has a three-ply weave structure including an intermediate layer between the pair of outer layers with polyester LM yarns as warp yarns and intermediate yarns as weft yarns,
The polyester FD yarn is,
It is a 400d to 500d high multi-filament yarn consisting of 200 to 250 filaments that is ITY processed by plying multiple white dyed yarns and then DTY processed,
The cross section of the intermediate yarn is,
A light absorption layer containing carbon black dyed yarn; and
Fabric for a combination type blackout blind, characterized in that it includes a white color light reflection layer surrounding the light absorption layer.
According to paragraph 1,
The plurality of white dyeing yarns,
A fabric for a combination type blackout blind, characterized in that it further comprises at least one flat cross-section yarn and at least one circular cross-section yarn.
According to paragraph 2,
The light reflection layer is,
Fabric for combination type blackout blinds, characterized by a white colored PVC coating layer.
According to paragraph 2,
The light reflection layer is,
Core Sign A fabric for a combination type blackout blind, characterized as a white-colored double effect yarn layer made by double covering the carbon black dyed yarn in opposite directions in a crosswise direction.
According to paragraph 2,
The light reflection layer is,
Fabric for a combination type blackout blind, characterized in that it further comprises a white PVC coating layer surrounding the double effect yarn layer.
According to clause 4 or 5,
The double effect yarn,
It has a twist number of 300TPM ~ 800TPM,
The pair of outer layers and the middle layer are,
Fabric for combination type blackout blinds, characterized by having an inclined rib-stop structure.

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