JP7102276B2 - Roll screens and screens for roll screens - Google Patents

Description

The present invention relates to a roll screen and a screen for a roll screen in which a plurality of screens are suspended and supported in a superposed state and the amount of light collected into the room can be adjusted by adjusting the overlapping of the screens.

There is a roll screen in which the amount of daylighting into the room can be adjusted by relatively moving the doubly stacked screens in the vertical direction (see Patent Document 1). In such a roll screen, a lace portion that partially transmits light and a drape portion that blocks light are alternately formed in a striped pattern on the screen, and the screen is suspended and supported in a state of being doubly overlapped. ing. Then, by operating the operating means, the front and rear screens are relatively moved in the vertical direction to adjust the degree of overlap between the race portion and the drape portion, so that the amount of lighting can be adjusted.

JP-A-2018-3541

By the way, since the lace portion of each screen is composed of the same structure (for example, fabric structure), moire (interference fringes) may occur when the front and rear screens are relatively moved.

The present invention has been made to solve the above problems, and an object of the present invention is to provide a roll screen and a screen for a roll screen capable of suppressing the occurrence of moire that occurs when the front and rear screens overlap. be.

The roll screen for solving the above problems is a roll screen that allows the first screen and the second screen arranged in the front-rear direction to be raised and lowered, and the first screen and the second screen are alternately moved in the raising and lowering direction. A race portion and a drape portion are provided side by side, and the regions constituting each of the race portions are configured so that the structure is different within the region, and the first screen and the second screen are the first screen. The screen is switched between a light-shielding state in which the race portion of the screen and the drape portion of the second screen overlap, and a translucent state in which the race portions of the first screen and the second screen and the drape portions of the second screen overlap each other. The race portions that overlap each other when relatively moving between the light-shielding state and the translucent state have different tissue portions overlapping each other.

In the roll screen, in the region constituting each of the race portions, the structure may be composed of a weft element and a warp element, and the densities of the weft elements may be gradually different in the elevating direction.

In the roll screen, in the region constituting each of the race portions, the structure may be composed of a weft element and a warp element, and the weft element may be arranged so as to fluctuate irregularly.

In the roll screen, the structure is, for example, a dough structure.
In the roll screen, the first screen and the second screen are composed of one continuous screen, and the continuous screen is folded back at a weight bar arranged at a lower end portion to form the first screen. And the second screen may be configured.

In the roll screen, when the drape portion has a lower translucency than the race portion, the regions constituting each of the drape portions are also configured so that the structure is different within the region, and the light shielding. The drape portions that overlap when relatively moving between the state and the translucent state may also have different tissue portions that overlap each other.

The roll screen screen for solving the above problems is a roll screen screen formed by folding back a first screen and a second screen parallel to each other in the front-rear direction of the roll screen, and the first screen and the second screen. The lace portions and the drape portions are provided alternately arranged in the elevating direction of the screen, and the regions constituting each of the race portions are configured so that the structures are different within the regions.

According to the present invention, it is possible to suppress the occurrence of moire when the translucent portions of the front and rear screens overlap.

The front view of the roll screen in 1st Embodiment. FIG. 3 is a cross-sectional view of the roll screen according to the first embodiment. The main part perspective view which shows the relationship between the 1st screen and the 2nd screen and a weight bar. Top plan view of the roll screen used for the first screen and the second screen. (A) is a diagram showing a light-transmitting state, and (b) is a diagram showing a light-shielding state. The side view which shows the gear mechanism of the operation device in the roll screen in 1st Embodiment. (A) and (b) are diagrams showing the operation of the gear mechanism. Contrary to the example of FIG. 4, a plan view of a main part of a roll screen screen crossed with respect to warps so that the wefts in each translucent portion gradually increase in density from the upper end to the lower end. The main part plan view of the screen sheet used for the 1st screen and the 2nd screen in 2nd Embodiment. FIG. 3 is a perspective view of a main part of the roll screen according to the third embodiment.

Hereinafter, the roll screen to which the present invention is applied will be described with reference to the drawings.
[First Embodiment]
As shown in FIGS. 1 and 2, the roll screen of the first embodiment is a dimmable roll screen. In the roll screen, the support brackets 3 are attached to both ends of the frame 2 attached to the attachment surface such as a window frame via the attachment bracket 1, and the two first take-up pipes 4a and the first take-up pipe 4a are attached to the support bracket 3. The two take-up pipes 4b are rotatably supported. As an example, the first screen 5a is located on the outdoor side and the second screen 5b is located on the indoor side.

The first take-up pipe 4a as the first take-up shaft and the second take-up pipe 4b as the second take-up shaft are supported by the support bracket 3 in the vertical direction at predetermined intervals and in the front-rear direction. It is supported in a slightly displaced state. The upper edge of the first screen 5a is attached to the first take-up pipe 4a located on the outdoor side at the upper side, and the upper edge of the second screen 5b is attached to the second take-up pipe 4b located on the indoor side at the lower side. The rim is attached. The first screen 5a and the second screen 5b are hung from the first take-up pipe 4a and the second take-up pipe 4b in a state of being closely overlapped with each other.

As shown in FIG. 3, the lower edges of the first screen 5a and the second screen 5b are attached to the weight bar 6, and both ends of the weight bar 6 are supported by the bottom cover 7 having an upper opening. The first screen 5a and the second screen 5b are guided upward from the inside of the bottom cover 7 through the opening thereof.

In each of the first screen 5a and the second screen 5b, a race portion 8 as a light transmitting portion for transmitting light and a drape portion 9 as a light shielding portion for blocking light are arranged side by side at equal intervals in the vertical direction. .. The first screen 5a and the second screen 5b are one continuous screen, and are arranged so as to be arranged in the front-rear direction of the roll screen by being folded back by the weight bar 6. The roll screen screen 11 which is the original fabric of the continuous screen shown in FIG. 4 is, for example, a fabric structure such as a woven fabric, a knitted fabric, or a non-woven fabric impregnated with a resin. As the fabric structure is impregnated with the resin on the soft fabric, the fibers are less likely to be unraveled and wrinkles are less likely to occur, so that the expansion and contraction of the fabric can be suppressed. As a result, it is possible to obtain a fabric having excellent flatness or flatness and excellent shape stability. In addition, the fabric structure can be added with flameproof performance by weaving a flameproof agent. The fabric structure may be plain or may have a handle. Further, the fabric structure may be a fabric with embroidery or the like.

As shown in FIG. 5A, the first screen 5a and the second screen 5b can take in external light from the race portion 8 in a translucent state in which the race portions 8 overlap, and are shown in FIG. 5 (b). As described above, in the state where the race portion 8 and the drape portion 9 of the first screen 5a and the second screen 5b overlap each other, the external light is blocked and the light is shielded. The drape portion 9 is formed so that the width in the vertical direction is wider than the width of the race portion 8 in the same direction. As a result, the drape portion 9 ensures that the race portion 8 is closed in a light-shielded state.

The fabric structure is composed of a warp 12 as a warp element and a warp 13 as a weft element. Are crossed and woven (see FIGS. 3 and 4). In the region of each race portion 8, the density of the weft 13 is different depending on the position so that the structure is different in the region.

In the roll screen screen 11 shown in FIG. 4, in each race portion 8, the weft 13 is intersected with the warp 12 so that the density gradually decreases from the upper end to the lower end. Therefore, in each race portion 8, there are no portions having the same density in the vertical direction. As shown in FIG. 3, the roll screen screen 11 is arranged so as to be arranged in the front-rear direction of the roll screen by being folded back by the weight bar 6. Therefore, each race portion 8 of the first screen 5a is a mesh in which the weft 13 is crossed with respect to the warp 12 so that the density gradually decreases from the upper end to the lower end. On the other hand, each race portion 8 of the second screen 5b is a mesh in which the weft 13 is crossed with respect to the warp 12 so that the density gradually increases from the upper end to the lower end.

As shown in FIGS. 1 and 2, an operating device 16 is attached to one of the support brackets 3, and an endless ball chain 17 is hung from the operating device 16. Then, by operating the ball chain 17, the first take-up pipe 4a and the second take-up pipe 4b can be rotated in the same direction at the same speed, and the first screen 5a and the second screen 5b can be raised and lowered at once. ing.

Further, when the ball chain 17 is pulled in the opposite direction after the first screen 5a and the second screen 5b are moved up and down, only the lower second take-up pipe 4b is rotated only by a predetermined angle, and the first screen 5a and the first screen 5a and the second screen 5b are rotated. The second screen 5b can be relatively moved in the vertical direction.

As shown in FIGS. 1 and 7 (a) and 7 (b), a pulley 19 is rotatably supported in the case 18 of the operating device 16, and a ball chain 17 is mounted on the pulley 19. Then, the pulley 19 is rotated in the forward and reverse directions by the operation of the ball chain 17.

The ball chain 17 is formed in an endless shape, and the regulating members 17a and 17b that regulate the elevating range of the first screen 5a and the second screen 5b are attached. When the first screen 5a and the second screen 5b are pulled up to the upper limit, the regulating member 17b abuts on the back side of the case 18 to prevent further operation of the ball chain 17 in the same direction. Further, when the first screen 5a and the second screen 5b are lowered to the lower limit, the regulating member 17a abuts on the front surface side of the case 18 to prevent further operation of the ball chain 17 in the same direction.

As shown in FIG. 6, a drive gear 21 is integrally formed on the pulley 19, and a transmission gear 22 that meshes with the drive gear 21 is rotatably supported by the case 18. A transmission shaft portion 23 of the second take-up pipe 4b is inserted into the central portion of the drive gear 21, and a torsion coil spring 24 as an urging member is wound around the transmission shaft portion 23. The portion of the transmission shaft portion 23 around which the torsion coil spring 24 is wound is cylindrical, and the tip portion that engages with the second take-up pipe 4b is fitted so as not to rotate relative to the second take-up pipe 4b. It fits.

The drive gear 21 is formed with two transmission pieces 25 projecting apart from each other in the vicinity of the ends 24a and 24b of the torsion coil spring 24, and the transmission pieces 25 are formed at the ends 24a based on the rotation of the drive gear 21. When engaged with, 24b, the rotation of the drive gear 21 is transmitted to the second take-up pipe 4b. Therefore, when the pulley 19 is rotated, the second take-up pipe 4b is rotated almost at the same time.

Above the inside of the case 18, a driven gear 26 that meshes with the transmission gear 22 is rotatably supported by the case 18. The number of teeth of the drive gear 21 and the driven gear 26 is the same, and the driven gear 26 is rotated in the same direction as the drive gear 21 at the same speed based on the rotation of the drive gear 21.

A transmission shaft portion 27 of the first take-up pipe 4a is inserted into the central portion of the driven gear 26, and a torsion coil spring 28 as an urging member is wound around the transmission shaft portion 27. The portion of the transmission shaft portion 27 around which the torsion coil spring 28 is wound is cylindrical, and the tip portion that engages with the first take-up pipe 4a is fitted so as not to rotate relative to the first take-up pipe 4a. It fits.

The driven gear 26 is formed with a transmission piece 29 that projects on the rotation locus of the ends 28a and 28b of the torsion coil spring 28, and the transmission piece 29 is formed at the ends 28a and 28b based on the rotation of the driven gear 26. When engaged with any of the above, the rotation of the driven gear 26 is transmitted to the first take-up pipe 4a.

Therefore, when the driven gear 26 rotates in the direction of arrow A from the state shown in FIG. 7A, the driven gear 26 rotates first within a range of approximately 270 degrees until the transmission piece 29 abuts on the end 28a. It is not transmitted to the take-up pipe 4a. Similarly, when the driven gear 26 rotates in the direction of arrow B from the state shown in FIG. 7 (b), the rotation of the driven gear 26 is the second within a range of approximately 270 degrees until the transmission piece 29 abuts on the end 28b. 1 Not transmitted to the take-up pipe 4a.

By such an operation, when the first screen 5a and the second screen 5b are collectively moved up and down, and then the ball chain 17 is operated in the opposite direction to rotate the drive gear 21 in the opposite direction, the driven gear 26 The first take-up pipe 4a is not rotated until the second take-up pipe 4b is rotated by about 270 degrees.

In the first take-up pipe 4a and the second take-up pipe 4b, a spring motor for reducing the operating force at the time of hoisting the first screen 5a and the second screen 5b, the first screen 5a and the second screen 5b It contains a stopper device that prevents the weight of the vehicle from dropping.

Next, the operation of the roll screen configured as described above will be described. When the ball chain 17 is operated to rotate the first take-up pipe 4a and the second take-up pipe 4b in the direction of arrow C shown in FIG. 6, the first screen 5a and the second screen 5b become the first take-up pipe 4a. And the second screen 5a and the second screen 5b are lowered by being rewound from the second take-up pipe 4b at the same speed.

At this time, the first screen 5a is the first take-up pipe so that the first screen 5a and the second screen 5b are lowered in a light-shielded state in which the race portion 8 and the drape portion 9 of the first screen 5a and the second screen 5b overlap. 4a is attached, and the second screen 5b is attached to the second take-up pipe 4b (see FIG. 5B). Further, the positional relationship between the transmission piece 29 of the driven gear 26 and the ends 28a and 28b of the torsion coil spring 28 during descent is in the state shown in FIG. 7B, and rotates in the counter-arrow B direction. ing.

When the ball chain 17 is operated in the opposite direction (direction of arrow D shown in FIG. 6) after lowering the first screen 5a and the second screen 5b to a desired height, the driven gear 26 rotates in the direction of arrow B and the transmission piece. The first take-up pipe 4a is not rotated and only the second take-up pipe 4b is rotated until 29 reaches the position shown in FIG. 7 (a). Then, the first screen 5a and the second screen 5b move relative to each other in the vertical direction, and the race portion 8 of the first screen 5a and the second screen 5b becomes a translucent state in which the race portions 8 overlap each other, and external light can be taken in (FIG. 5). See (a)).

When the ball chain 17 is further operated in the same direction from this translucent state, the first take-up pipe 4a and the second take-up pipe 4b are rotated at the same speed, and the first screen 5a and the second screen 5b are pulled up at the same speed. Be done.

The roll screen of the first embodiment as described above can obtain the effects listed below.
(1-1) Each race portion 8 of the first screen 5a is a mesh in which the weft 13 is crossed with respect to the warp 12 so that the density gradually decreases from the upper end to the lower end. On the other hand, each race portion 8 of the second screen 5b is a mesh in which the warp threads 13 intersect with the warp threads 12 so that the density gradually increases from the upper end to the lower end. Therefore, while switching between the light-shielded state and the translucent state, each race portion 8 of the first screen 5a and each race portion 8 of the second screen 5b move relative to each other in the vertical direction, but portions having the same density There is almost no overlap. That is, in the race portion 8, there is almost no overlap of regular repeating patterns. As a result, the occurrence of moire can be suppressed in the portion where the race portion 8 of the first screen 5a and the race portion 8 of the second screen 5b overlap.

(1-2) Since the first screen 5a and the second screen 5b are configured by folding back one roll screen screen 11, separate roll screen screens are used for the first screen 5a and the second screen 5b. It is possible to reduce the number of parts compared to when the screen is used. In addition, the roll screen can facilitate the assembly process of the first screen 5a and the second screen 5b.

The roll screen of the first embodiment can be further modified as appropriate, for example, as follows.
As shown in FIG. 8, the roll screen screen 11 may have a mesh in which each race portion 8 is crossed with respect to the warp 12 so that the weft 13 gradually increases in density from the upper end to the lower end. .. That is, FIG. 8 shows that the density of the weft 13 in the race portion 8 is opposite to that of the examples of FIGS. 3 and 4. In this case, each race portion 8 of the first screen 5a is a mesh in which the weft 13 is crossed with respect to the warp 12 so that the density gradually increases from the upper end to the lower end. On the other hand, each race portion 8 of the second screen 5b is a mesh in which the warp threads 13 intersect with the warp threads 12 so that the density gradually decreases from the upper end to the lower end. As described above, the same effects as in (1-1) and (1-2) can be obtained even if the configuration of the weft 13 of the race portion 8 shown in FIGS. 3 and 4 is reversed.

-The density in each race portion 8 may be changed stepwise in the elevating direction instead of gradually changing in the elevating direction.
[Second Embodiment]
As shown in FIG. 9, in the roll screen of the second embodiment, the structure of the lace portion 8 that transmits light is different from that of the first embodiment, and the weft 13 is intersected with the warp 12 so as to sway irregularly. It is a mesh. Also in the second embodiment, the first screen 5a and the second screen 5b are composed of one roll screen screen 11, and are arranged so as to be arranged in the front-rear direction of the roll screen by being folded back by the weight bar 6. ing.

The roll screen of the second embodiment as described above can obtain the effects listed below.
(2-1) Each race portion 8 of the first screen 5a and the second screen 5b is composed of a mesh crossed with respect to the warp 12 so that the weft 13 sways irregularly. Therefore, while switching between the light-shielded state and the translucent state, each race portion 8 of the first screen 5a and each race portion 8 of the second screen 5b move relative to each other in the vertical direction, but portions having the same density There is no overlap. That is, in the race portion 8, regular repeating patterns do not overlap. Therefore, it is possible to suppress the occurrence of moire in the portion where the race portion 8 of the first screen 5a and the race portion 8 of the second screen 5b overlap.

[Third Embodiment]
In the roll screen of the third embodiment, the first screen 5a and the second screen 5b are composed of separate screens. In this respect, the first screen 5a and the second screen 5b are different from the roll screen of the first embodiment composed of one continuous screen.

As shown in FIG. 10, in the roll screen of the third embodiment, since the first screen 5a and the second screen 5b are separate sheets, the first weight bar 31 is arranged at the lower end of the first screen 5a. A second weight bar 32 is arranged at the lower end of the second screen 5b.

When the roll screen screen 11 provided with the race portion 8 shown in FIG. 4 is used for the first screen 5a and the second screen 5b, it is used as follows. That is, in the first screen 5a, each race portion 8 is configured so that the density of the warp threads 12 gradually decreases from the upper end to the lower end. In this case, the second screen 5b is configured such that the first screen 5a is turned upside down so that the density of the warp 12 gradually increases from the upper end to the lower end of each race portion 8. As a result, the race portion 8 of the first screen 5a and the race portion 8 of the second screen 5b are in the same state as the race portion 8 of the first screen 5a and the race portion 8 of the second screen 5b of the first embodiment. ..

On the contrary, in the first screen 5a, each lace portion 8 is configured so that the density of the warp 12 gradually increases from the upper end to the lower end, and the second screen 5b is above and below the first screen 5a. The same effect can be obtained even if each lace portion 8 is configured so that the density of the warp threads 12 gradually decreases from the upper end to the lower end.

Further, when the roll screen screen 11 provided with the race portion 8 shown in FIG. 9 is used for the first screen 5a and the second screen 5b, it is used as follows. The lace portion 8 of the roll screen screen 11 of FIG. 9 is used for the first screen 5a and the second screen 5b because the weft 13 is intersected with the warp 12 so as to sway irregularly. There is no difference from the case. In this case, the screen sheet can be used for the first screen 5a and the second screen 5b regardless of the top and bottom.

The roll screens of the first to third embodiments can be further modified as appropriate, for example, as follows.
When a sheet of fabric structure is used for the first screen 5a and the second screen 5b, threads of various thicknesses may be used for the weft thread 13 for each lace portion 8. Even with such a configuration, it is possible to prevent regular repeating patterns from overlapping in the race portion 8 of the first screen 5a and the race portion 8 of the second screen 5b that overlap each other, thereby suppressing the occurrence of moire. can.

-The first screen 5a and the second screen 5b may be a synthetic resin sheet that is not a fabric (not a woven fabric) instead of a sheet having a fabric structure. In this case, both the lace portion 8 and the drape portion 9 are formed by printing. For example, the drape portion 9 can be formed by solid printing using an ink having a low lightness color. Further, the lace portion 8 can be formed by printing the mesh of the first embodiment or the second embodiment (the pattern of the warp 12 as the warp element and the weft 13 as the warp element).

The first screen 5a may move with respect to the second screen 5b in order to switch between the translucent state and the light-shielded state, or the second screen 5b may move with respect to the first screen 5a as described above. Alternatively, both the first screen 5a and the second screen 5b may move in opposite directions to each other.

-For the fabric permeability of the first screen 5a and the second screen 5b, the light-shielding portion formed by the drape portion 9 can be defined as a region having a light-shielding ratio of 99.40% or more according to the JIS-L 1055A method. Depending on the composition of the fabric structure, there are 1st to 3rd grades (1st grade: 99.99% or more shading rate, 2nd grade: 99.80% or more and less than 99.99%, 3rd grade: 99.40 shading rate % Or more and less than 99.80%). Therefore, it has some translucency regardless of the grade. Even if the drape portion 9 is of the first grade to the third grade, if the drape portion 9 of the first screen 5a and the drape portion 9 of the second screen 5b are regularly repeated structures, moire may occur. Further, when a region having a shading rate lower than that of the third grade is used as the drape portion 9, moire is more likely to occur. Therefore, the drape portion 9 of the first screen 5a and the drape portion 9 of the second screen 5b may also be configured so that the structures are different within the region.

That is, in the first screen 5a, in addition to the race portion 8, the drape portion 9 also has the density of the weft 13 different depending on the position. For example, in the case of the roll screen shown in FIG. 3, each drape portion 9 in the first screen 5a intersects the warp 12 so that the weft 13 gradually decreases in density from the upper end to the lower end. Then, each drape portion 9 on the second screen 5b intersects the warp thread 12 so that the weft thread 13 gradually increases in density from the upper end to the lower end. Further, as shown in FIG. 9, the drape portion 9 of the first screen 5a and the drape portion 9 of the second screen 5b intersect with the warp 12 so that the weft 13 sways irregularly.

According to the above configuration, the occurrence of moire is suppressed even when the drape portion 9 has translucency, when the drape portions 9 overlap each other, or when the drape portion 9 and the race portion 8 overlap each other. be able to.

The definition of the light-shielding portion formed by the drape portion 9 and the light-transmitting portion formed by the race portion 8 is not limited to the definition based on the light-shielding ratio as described above.

1 ... Mounting bracket, 2 ... Frame, 3 ... Support bracket, 4a ... 1st take-up pipe, 4b ... 2nd take-up pipe, 5a ... 1st screen, 5b ... 2nd screen, 6 ... Weight bar, 7 ... Bottom Cover, 8 ... lace part, 9 ... drape part, 11 ... roll screen screen, 12 ... gradual warp, 12 ... warp, 13 ... weft, 15 ... fabric element, 16 ... operating device, 17 ... ball chain, 18 ... case , 19 ... Pulley, 21 ... Drive gear, 22 ... Transmission gear, 23 ... Transmission shaft, 24 ... Coil spring, 24a ... End, 24b ... End, 25 ... Transmission piece, 26 ... Driven gear, 27 ... Transmission shaft Part, 28 ... Coil spring, 28a ... End, 28b ... End, 29 ... Transmission piece, 31 ... First weight bar, 32 ... Second weight bar.

Claims (7)

In the roll screen that allows the first screen and the second screen to be raised and lowered in parallel in the front-rear direction,
Each of the first screen and the second screen includes race portions and drape portions that are alternately arranged in the elevating direction.
The regions constituting each of the race portions are configured so that the structures are different within the regions.
The first screen and the second screen are in a light-shielded state in which the race portion of the first screen and the drape portion of the second screen overlap, and the race portions of the first screen and the second screen and the race portion of the second screen are overlapped with each other. It switches to a translucent state where the drapes overlap each other,
The race portions that overlap when relatively moving between the light-shielding state and the translucent state have different tissue portions that overlap each other.
In the region constituting each of the race portions, the structure is composed of a weft element and a warp element, and the density of the weft element is gradually different in the elevating direction.
Roll screen. In the roll screen that allows the first screen and the second screen to be raised and lowered in parallel in the front-rear direction,
Each of the first screen and the second screen includes race portions and drape portions that are alternately arranged in the elevating direction.
The regions constituting each of the race portions are configured so that the structures are different within the regions.
The first screen and the second screen are in a light-shielded state in which the race portion of the first screen and the drape portion of the second screen overlap, and the race portions of the first screen and the second screen and the race portion of the second screen are overlapped with each other. It switches to a translucent state where the drapes overlap each other,
The race portions that overlap when relatively moving between the light-shielding state and the translucent state have different tissue portions that overlap each other.
In the region constituting each of the race portions, the structure is composed of a weft element and a warp element, and the weft element is arranged so as to fluctuate irregularly.
Roll screen. The roll screen according to claim 1 or 2 , wherein the structure is a fabric structure. The first screen and the second screen are composed of one continuous screen.
The roll screen according to any one of claims 1 to 3 , wherein the continuous screen is folded back at a weight bar arranged at the lower end portion to form the first screen and the second screen. When the drape portion has a lower translucency than the race portion,
Further, the regions constituting each of the drape portions are also configured so that the structures are different within the regions.
The roll screen according to any one of claims 1 to 4 , wherein the drape portions that overlap each other when relatively moving between the light-shielding state and the translucent state also have different tissue portions. .. A roll screen screen formed by folding back a first screen and a second screen that are parallel to each other in the front-rear direction of the roll screen.
The first screen and the second screen are provided with race portions and drape portions that are alternately arranged in the elevating direction of the second screen.
The regions constituting each of the race portions are configured so that the structure is different within the region, and the structure is composed of a weft element and a warp element, and the density of the weft element is gradually different in the ascending / descending direction. ing
Screen for roll screen. A roll screen screen formed by folding back a first screen and a second screen that are parallel to each other in the front-rear direction of the roll screen.
The first screen and the second screen are provided with race portions and drape portions that are alternately arranged in the elevating direction of the second screen.
The region constituting each of the race portions is configured so that the structure is different within the region, and the structure is composed of a weft element and a warp element, and the weft element is arranged so as to fluctuate irregularly.
Screen for roll screen.

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