Patent Application
20250213061
Not applicable.
The invention relates to a new blackout curtain that does not transmit light to the interior environment, which can be used in any environment where it is desired to prevent light from entering such as home, office, hotel, photo studios, movie theaters.
The invention particularly relates to a curtain structure that provides 100% blackout by minimizing the light transmittance rate, which protects the privacy of private life and protects against the disturbing effect of light and UV rays. The substrate grinding apparatus primarily operates by driving an abrasive cloth to rotate through a grinding disk, using the abrasive cloth to grind the upper surface of a substrate placed thereunder; wherein the substrate may be a wafer, but is not limited to wafers.
Blackout fabrics provide dark environments by blocking light by means of their functional properties. Blackout curtains are essentially light-proof fabrics and are used in various areas to protect against the disturbing effects of light and UV rays and to protect privacy. Blackout curtains are used as classic curtains or roller blinds, especially for hotels, show halls, hospitals, educational institutions or homes, and in addition to this function, they are also used to form qualified living environments by helping to provide sound and heat insulation.
In the present technique, the production of blackout fabrics is carried out by three different methods. The first of these is to form the structures created on the weaving machine by combining them with the knitting connection points during weaving. However, these structures do not completely prevent the light transmission in the fabric. For this reason, it is generally tried to increase the blackening rate of the product by using dark color. A blackening rate of around 90% can be achieved by means of dark colors, but this results in a limited product range. Namely, the user cannot have the blackout feature with a curtain of the desired color.
When the curtain fabric structures with blackout feature obtained by weaving technique are examined, it is seen that they have high warp density, black chip yarns are generally used in the weft yarns, and double-faced satin knits are used in terms of knitting. In order to make the fabrics to have less light transmittance, collection is generally provided by dyeing directly in the jet without pre-fixing in dyeing processes. For this reason, untreated yarns are used in the constructions formed to collect the fabric in the weft and warp directions during dyeing. However, even if all of these methods are used correctly, it is not possible to ensure that the fabrics formed are completely light-proof (blackout) fabrics. For this reason, all formed fabrics are classified as dimout.
The second method used in the technique to ensure light-proof properties in blackout curtain fabric structures is coating. The coating process is a process applied to the fabric for special effects that cannot be achieved through normal finishing processes. According to the desired effect, chemicals in liquid, dough or powder form are transferred to the fabric in powder, paste or foam form, forming a film layer on the fabric. Blackout curtain fabric structures are generally produced with a 3-layered foam coating technique. Even if the light-proof feature is provided with this process, there are problems in terms of the difficulty of the process applied and it has a very high-cost production technique. In addition, the obtained fabric structures have an artificial feel, similar to the feeling of plastic rather than the touch feeling arising from the nature of the textile material. Additionally, if it is wanted to clean these coating curtains, there is a possibility that the coating chemical may separate from the surface and/or be damaged. In addition, in case of possible washing, cracks and/or surface deformations that may occur on the coating surface cannot be removed by the ironing process, and this situation negatively affects the appearance of the curtain.
The third method used in the technique to ensure light-proof properties in blackout curtain fabric structures is the fabrics obtained by lamination technology. Laminated fabric is defined as a material formed by the combination of two or more layers, at least one of which is a textile fabric, and linked together by an added adhesive or by the adhesive effect of one or two component layers. The lamination process is based on the process of combining layers of fabric or fabric and material to form a composite material. Polymer materials that cannot be shaped into coating dough are first turned into films and then laminated to the fabric. In lamination, as in coating, chemicals can be transferred to the fabric in the form of foam as a solution or aqueous dispersion. At the end of the lamination process, a structure consisting of two or more layers, including the ground fabric, is obtained. However, even if this method provides the light-proof feature, there are problems in terms of the difficulty of the applied process and it has a high-cost production technique.
As a result of a search carried out in the literature about the subject, application numbered TR 2020/01260 was found. The application relates to a fabric coating emulsion that gives the fabric the ability to maintain its flexibility even at low temperatures, flame retardant and blackening properties. It is stated that said fabric coating emulsion comprises pigments or filling materials such as kaolin type clay, calcium carbonate, talc, titanium dioxide, carbon black to prevent sunlight from passing through and provide blackening properties. However, in the mentioned document, there is no mention of a structure that provides 100% blackout feature with its fabric structure without any coating.
As a result, due to the above-mentioned drawbacks and the inadequacy of the existing solutions, it has become necessary to make a development in the relevant technical field.
The invention aims to solve the above-mentioned drawbacks, inspired by current situations.
The main object of the invention is to provide a curtain structure with 100% blackout feature that does not transmit any light into the interior environment.
An object of the invention is to minimize the light transmission rate by using layered weaving technique and different knitting structures.
Another object of the invention is to prevent light transmittance by having a high filament of the weft yarns used in the middle layer of the three-layered structure.
Another object of the invention is to produce a 100% blackout curtain fabric that can be easily washed and/or ironed in case of contamination, staining or dust.
Another object of the invention is to eliminate the problems such as melting and/or deforming of existing fabric structures with blackout feature due to sunlight over time, and to ensure that they have a much longer lasting structure.
In order to achieve the objects described above, the invention is a new blackout curtain with a completely (100%) light-proof feature, comprising; an upper layer fabric (1) and a lower layer fabric (3), which are woven with knits from warp and weft yarns and form the visible sides of the curtain, a middle layer fabric (2), which provides light proofing and comprise an upper part (2.1) and a lower part (2.2), woven as a single layer with knits by using warp yarns and two different groups of weft yarns of high filament and black color, connection points (4) connecting the upper layer fabric (1) and the upper part (2.1) of the middle layer fabric (2) to each other and connecting the lower fabric (3) and the lower part (2.2) of the middle fabric (2) to each other and an upper layer floating fabric structure (1.1) and a lower layer floating fabric structure (3.1) located opposite the connection points (4) to prevent light leaks.
In order to achieve the objects described above, the invention is a production method to obtain a completely (100%) light-proof blackout curtain and comprises the following process steps:
The structural and characteristic features and all the advantages of the invention will be more clearly understood by means of the drawing given below and the detailed description written with reference to this drawing, and therefore the evaluation needs to be made by taking this drawing and detailed description into consideration.
In this detailed description, the blackout curtain and its production method, which are the subject of the invention, are described only for a better understanding of the subject.
The invention relates to a new blackout curtain that is completely (100%) light-proof and its production method. The said blackout curtain comprises an upper layer fabric (1) and a lower layer fabric (3), which are woven from warp and weft yarns, form the visible sides of the curtain; a middle layer fabric (2) comprise an upper part (2.1) and a lower part (2.2), woven as a single layer with knits by using warp yarns and weft yarns of high filament and black color; and connection points (4) connecting the upper layer fabric (1) and the upper part (2.1) of the middle layer fabric (2) to each other and connecting the lower layer fabric (3) and the lower part (2.2) of the middle layer fabric (2) to each other; and an upper layer floating fabric structure (1.1) and a lower layer floating fabric structure (3.1) located opposite the connection points (4) to prevent light leaks.
In the product, which is subject of the invention, the upper layer floating fabric structure (1.1) is located opposite the connection point (4) that connecting the lower layer fabric (3) and the lower part (2.2) of the middle layer fabric (2) to each other.
In the product, which is subject of the invention, the lower layer floating fabric structure (3.1) is located opposite the connection point (4) that connecting the upper layer fabric (1) and the upper part (2.1) of the middle layer fabric (2) to each other.
In an embodiment of the invention, the middle layer fabric (2) is woven by using high filament, black colored weft yarns, preferably 150 denier 288 filament black micro yarns.
In a preferred embodiment of the blackout curtain, which is subject of the invention, all of the warp yarns used in weaving the upper layer fabric (1), the middle layer fabric (2) and the lower layer fabric (3) are the same warp yarn. Herein, warp yarns are grouped in order to facilitate the weaving process and form layers. Preferably, 50 denier/24 filament raw semi-dull warp yarn is used in the weaving process.
In a preferred embodiment of the blackout curtain, which is subject of the invention, high filament yarns are used as weft yarns in the weaving of the upper layer fabric (1) and the lower layer fabric (3) to minimize light leakage. Preferably, 300 denier/288 filament weft yarn is used in the weaving process.
A production method to obtain a completely (100%) light-proof blackout curtain, which is subject of the invention comprises the following process steps:
In the process step i) of the method of the invention, including but not limited to, the upper layer fabric (1) of the warp yarns and weft yarns, which forms the visible sides of the curtain, is woven by using mostly normal or reinforced satin, twill and similar knits, which do not have a multi-hole structure.
In a preferred example of the method, which is subject of the invention, in the process step ii) the middle layer fabric (2) comprising the upper part (2.1) and the lower part (2.2) is woven by using warp yarns and two different high filament and black colored weft yarns in double-faced satin knits. Herein, preferably 50 denier 24 filament yarns are used as warp yarns and preferably 150 denier 288 filament black micro yarns are used as weft yarns.
In the process step iii) of the method of the invention, including but not limited to, the lower layer fabric (3) of the warp yarns and weft yarns, which forms the visible sides of the curtain, is woven by using mostly normal or reinforced satin, twill and similar knits, which do not have a multi-hole structure.
In the method of the invention, with the diagonally connection mentioned in iv) and v) process steps, the lower layer floating fabric structure (3.1) is formed opposite to the connection point (4) connecting the upper layer fabric (1) and the upper part (2.1) of the middle layer fabric (2) to each other and the upper layer floating fabric structure (1.1) is formed opposite to the connection point (4) connecting the lower layer fabric (3) and the lower part (2.2) of the middle layer fabric (2) to each other.
In order to obtain a preferred example of the invention, the following processes are followed:
The woven fabric blackout curtain, which is the subject of the invention, is formed by combining three different fabric structures (upper layer, middle layer, lower layer) using different knitting techniques and connection points (4) during weaving. As shown in
In order to form the middle layer fabric (2) structure, the middle layer warp yarns, the middle layer upper weft yarns and the middle layer lower weft yarns are used. The weft yarns used herein are different from the weft yarns used in the upper layer fabric (1) and lower layer fabric (3) structure. The weft yarns used in the middle layer fabric (2) have both high filament and black color. Preferably, 150 denier 288 filament black micro yarns are used to form this layer, but other yarns with a high number of filaments can also be used here. High filament and black yarns are preferred to minimize light transmission. The middle layer warp yarns and the middle layer weft yarns are woven by using certain knits. Double-faced satin knits are preferably used here. However, other yarns can also be used by adjusting the weft and warp density. The upper part (2.1) and lower part (2.2) of this middle layer fabric (2) consist of high filament weft yarns.
The most important part of the curtain, which is the subject of the invention is that 3 layers of fabric are woven independently of each other, as shown in
In the product, which is subject of the invention, the connection points (4) are formed with a special mesh structure in order to prevent light leaks. While the upper layer fabric (1) and the lower layer fabric (3) are woven, the middle layer is woven (floating) independently of the fabric (2) and is woven independently again by connecting to the second and third layers only at certain points. These connection points prevent light leaks by connecting the (4) layers of fabric diagonally to each other. In other words, opposite the connection point (4) in the upper layer fabric (1) structure, there is the lower layer floating fabric structure (3.1) of the lower layer fabric (3) structure. Opposite the connection point (4) in the lower layer fabric (3) structure, there is the upper layer floating fabric structure (1.1) of the upper layer fabric (1) structure.
Micro yarns should preferably be used in the upper layer floating fabric structure (1.1) and the lower layer floating fabric structure (3.1). There is no denier limitation but it is preferred to use yarns with high filament structure.
In the upper layer floating fabric structure (1.1) and the lower layer floating fabric structure (3.1), satin-like weaves with long skips, without too many intersections with warp yarns, are preferably used.
In order to obtain a preferred example of the invention, the woven fabric is subjected to quality control processes and then, the fabric is collected in the warp and weft directions by passing it through the stenter machine at appropriate temperature, speed and feeding values, and as a result, light transmittance is completely prevented. In fabrics produced as dyed fabric, the dyeing process is applied to color the product. When thermosetting yarn, called melting yarn, is preferred as warp and weft yarn in fabrics that are transferred at appropriate temperatures, it hardens after heat treatment and can also be used for blind purposes.
| Number | Date | Country | Kind |
|---|---|---|---|
| 2023/019614 | Dec 2023 | TR | national |
