JP4806986B2 - Smoke proof wall and its construction method - Google Patents

Description

  The present invention relates to a smoke-proof hanging wall provided on a ceiling in order to prevent diffusion of smoke generated at the time of a fire in a building and a construction method thereof.

In general, flat glass is used on the ceiling of buildings such as office buildings and shopping malls so as not to obstruct the field of view, and special guide rails are installed to attach the flat glass. The provided mounting structure is used (for example, refer patent document 1). However, since the plate glass is heavy and may be damaged, handling such as transportation is troublesome, and there is a problem that it takes time and effort to attach the heavy plate glass to the guide rail even during construction. Further, when a curved drooping wall is formed, a plate glass having a curved surface matched to the shape must be manufactured, which is extremely expensive. Further, the smoke-proof hanging wall using the plate glass may be damaged due to the earthquake and dropped, or the plate glass may be dropped and greatly damaged and scattered, which may lead to a serious accident.
Japanese Patent Laid-Open No. 11-76442

  The present invention has been made in view of such problems, and it is easy to carry and handle parts used for forming a smoke-proof hanging wall, and can be easily constructed, and a curved smoke-proof hanging wall is also provided. It is an object of the present invention to provide a smoke-proof dripping wall that can be easily constructed and that does not cause a serious accident even if it is dropped in the event of an earthquake or the like, and a construction method thereof.

In order to solve the above problems, the present invention is a sheet material composed of a glass fiber reinforced resin sheet having flexibility and transparency instead of a conventional plate glass as a material for forming a smoke-proof hanging wall. Is used. That is, the smoke-proof hanging wall of the invention according to claim 1 of the present invention is a box disposed so as to be perpendicular to the ceiling surface, and is a flexible and transparent glass fiber reinforced resin sheet. A box that accommodates a sheet material roll in a form in which the configured sheet material is wound and is provided with a slit for drawing out the sheet material, and is arranged to be perpendicular to the ceiling surface at a position spaced from the box. And a guide rail attached to the ceiling surface so as to extend between the box and the frame, and the sheet material is pulled out from the box, and the upper side edge of the sheet material The guide rail is guided by the guide rail, and the tip is fixed to the frame body, so that it is always installed in a stretched state between the box and the frame body, and further, between the sheet material and the frame body. The sheet And an elastic member for applying tension is provided.

The invention according to claim 2 is a box arranged so as to be perpendicular to the ceiling surface, and a sheet material made of a glass fiber reinforced resin sheet having flexibility and transparency is wound around the core. A box having a sheet material wound in a form wound up and having a slit for drawing out the sheet material, and a sheet material front end fixed so as to be perpendicular to the ceiling surface at a position spaced from the box And a guide rail attached to the ceiling surface so as to extend between the box and the frame, and the sheet material is pulled out from the box so as to be pulled out from the core. The upper side edge of the sheet material is guided by the guide rail, and the tip is fixed to the frame, so that it is always installed in a state stretched between the box and the frame. With sheet material During Kimakishin, and an elastic member for applying tension to said sheet material is provided.

The invention according to claim 3 is the smoke hanging wall of the invention according to claim 1 or 2 described above, a part region of the sheet material is stretched between the box and the frame length of the vertical direction A substantially V-shaped anti-sway member is attached to the guide rail or ceiling so as to be sandwiched.

Invention is to provide a method for applying a smoke hanging wall with the sheet material, the sheet material made of a flexible glass fiber reinforced resin sheet having a perforated with and transparency of according to claim 4 A step of accommodating a sheet material winding body in a form wound up and a box provided with a slit for drawing out the sheet material so as to be perpendicular to the ceiling surface, a step of attaching a guide rail to the ceiling surface, and the box The sheet material is pulled out from the guide rail, guided to the guide rail and stretched to a predetermined position, a frame body is attached to the front end of the sheet material via an elastic body, and the frame body is arranged to be perpendicular to the ceiling surface It has the process to perform.

The invention according to claim 5 also provides a method for constructing a smoke-proof hanging wall using a sheet material, and is a sheet material composed of a glass fiber reinforced resin sheet having flexibility and transparency. One end of the sheet member is connected to a winding core through an elastic body, and a sheet material winding body in a form in which the sheet material is wound around the winding core is accommodated and a box having a slit for drawing out the sheet material is perpendicular to the ceiling surface. Arranging the guide rail on the ceiling surface, pulling out the sheet material from the box so that the sheet material is all pulled out from the core, to the guide rail It has a step of guiding and stretching it to a predetermined position, and a step of attaching a frame body to the front end of the sheet material and arranging the frame body so as to be perpendicular to the ceiling surface.

The smoke-proof hanging wall of the present invention is formed by stretching a flexible sheet material to form the smoke-proof hanging wall. It is much lighter, easy to handle and transport, and can be constructed at low cost. Further, by curving the guide rail that guides the sheet material, a curved smoke-proof hanging wall can be easily formed. In addition, since a lightweight sheet material is used for the smoke-proof hanging wall, it is unlikely to be damaged and dropped even in an earthquake or the like, and even if it falls, it will break like a plate glass and scatter around There is no safety. Furthermore, since an elastic body for applying tension to the sheet material is provided between the sheet material and the frame or between the sheet material and the core, the occurrence of sagging of the sheet material can be suppressed during long-term use.

  In addition, the construction method of the present invention is a configuration in which a box containing the sheet material winding body is vertically attached to the ceiling, the sheet material is pulled out from the box, and a smoke-proof hanging wall is formed over a predetermined region. Construction is very easy and can be done in a short time.

Embodiments of the present invention will be described below with reference to the drawings. 1 is a schematic perspective view of a smoke-proof hanging wall according to a preferred embodiment of the present invention, FIG. 2 is a schematic sectional view taken along line AA of FIG. 1, and FIG. 3 (a) is a smoke-proof hanging wall shown in FIG. FIG. 4 is a schematic cross-sectional view showing a box provided on a wall and a sheet material drawn from the box, FIG. 4B is a schematic cross-sectional view taken along the line B-B in FIG. It is sectional drawing. 1 to 4, the smoke-proof hanging wall generally indicated by reference numeral 1 is a box 3 arranged so as to be perpendicular to the ceiling surface 2, and a flexible sheet material 5 is wound around the core 6. A box 3 having a sheet material wound body 4 wound up in the form of a sheet 3 and provided with a slit 7 for drawing out the sheet material, and arranged perpendicular to the ceiling surface 2 at a position spaced from the box 3. And a guide rail 9 attached to the ceiling surface 2 so as to extend between the box 3 and the frame body 8, and the sheet material 5 is pulled out from the box 3. These side edges are guided by the guide rail 9 and the tip is fixed to the frame body 8, so that it is always installed in a stretched state between the box 3 and the frame body 8. Hereinafter, each part will be described.

The sheet material 5 used for forming the smoke-proof hanging wall is provided with flexibility so that it can be wound, and has a strength capable of preventing the diffusion of smoke and has flame retardancy. An example of the sheet material 5 having such characteristics is a glass fiber reinforced resin sheet. In particular, the use of sheet material having a transparency, without obstructing the view, rather preferably of giving the appearance to the smoke hanging wall, Therefore, as the sheet material 5, glass fiber reinforced with transparency A resin sheet is used. A specific configuration of the glass fiber reinforced resin sheet having transparency will be described later. The core 6 used for winding the sheet material 5 may be simply a tubular one or may be provided with a shaft that is rotatably held by the box 3.

  The box 3 has a size capable of accommodating the sheet material wound body 4 in a state in which the sheet material 5 having a length capable of forming a smoke-proof hanging wall having a desired length is wound around the winding core 6. The winding core 6 is held in a form that can be rotated and that can be rotated by an operation from the outside of the box 3. Here, when a simple tubular core 6 is used, a box for rotatably supporting the tubular core 6 may be provided in the box 3, and a shaft is provided at both ends as the core 6. In the case of using a flat plate, the box 3 may be provided with a bearing that rotatably supports the shaft of the core or a shaft that can be connected to the shaft. The length of the sheet material 5 is preferably about 5 to 20 m, more preferably about 8 to 10 m from the viewpoint of workability and cost. The box 3 can be attached to the ceiling and / or the wall so as to be perpendicular to the ceiling surface 2.

  In the box 3, sheet material fixing means 11 is provided for fixing the sheet material 5 so that the sheet material 5 is not pulled out any more after the sheet material 5 having a predetermined length is pulled out from the box 3. In this embodiment, as the sheet material fixing means 11, a ratchet 12 that rotates integrally with the core 6 and a claw 13 that prevents the core 6 from rotating in the drawing direction of the sheet material 5 are provided. The claw 13 can be attached and detached from the outside of the box 3. When the sheet material 5 is pulled out during construction of the smoke-proof hanging wall, the claw 13 can be removed from the ratchet 12 and the sheet material 5 can be pulled out. After the sheet material 5 is stretched to a predetermined position, the pawl 13 can be hooked on the ratchet 12 to prevent further drawing of the sheet material 5. Thus, by providing the sheet material fixing means 11 for preventing the sheet material 5 from being pulled out, after the sheet material 5 is pulled out from the box 3 and set in the stretched state, the sheet material 5 is held in the stretched state. Will be. Note that the sheet material fixing means 11 is not limited to a mechanism using the ratchet 12 and the claw 13, and any structure that can prevent the sheet material 5 from being pulled out can be used. A structure using a brake to stop, a structure in which the sheet material 5 is fixed at the position of the slit 7 for pulling out the sheet material 5, and the length of the sheet material 5 is formed as a smoke-proof hanging wall of a predetermined length. It is also possible to set a length that is just right for the core 6 and fix the winding start portion with respect to the core 6 to the core 6 so as to prevent the sheet material 5 from being pulled out by the core 6.

  A slider 15 that is movable along the guide rail 9 while being held by the guide rail 9 has an appropriate interval (for example, about 500 mm) on the upper side edge of the sheet material 5 wound around the core 6. Open and installed. The slider 15 is usually made of resin, and is fixed to the sheet material 5 with an adhesive, a screw or the like. The guide rail 9 is provided with a slit 9a for allowing the sheet material 5 to pass through on the lower surface and can hold the slider 15 so as to be movable. With this configuration, the sheet material 5 is guided and held by the guide rail 9 by pulling out the sheet material 5 from the box 3 and holding and moving the slider 15 attached to the upper side edge in the guide rail 9. The Rukoto. The cross-sectional shape of the guide rail 9 and the shape of the slider 15 are not limited to those shown in the drawings, but may be arbitrary as long as the slider 15 is held by the guide rail 9 and can move along the guide rail 9. The planar shape of the guide rail 9 may be determined according to the shape required for the smoke-proof hanging wall 1. In the illustrated embodiment, the planar guide wall 9 is formed with a linear guide. Rail 9 is used. If a curved smoke-proof hanging wall is formed, the guide rail may be appropriately curved.

The frame 8 is for fixing the front end of the sheet material 5 at a predetermined position, and can be fixed to the ceiling and / or the wall so that the front end of the sheet material 5 can be fixed and is perpendicular to the ceiling surface 2. Of a possible structure. Here, either the fixing of the front end of the sheet material 5 to the frame body 8 or the fixing of the frame body 8 to the ceiling and / or the wall may be performed first. Further, the fixing of the front end of the sheet material 5 to the frame body 8 may be a structure in which the sheet material 5 is directly fixed to the frame body 8, or an appropriate member for attachment to the front end of the sheet material 5 in advance, for example, a rod-like shape. The member may be fixed and the member may be fixed to the frame 8. Although not shown in order to prevent the sheet material 5 stretched between the box 3 and the frame body 8 from sagging, it is not shown between the front end of the sheet material 5 and the frame body 8. An elastic body such as a rubber plate is attached, and an appropriate tension is applied to the sheet material 5.

  A wire 18 such as a piano wire for shaking the sheet 5 is stretched at a position sandwiching the lower side edge of the sheet 5 stretched between the box 3 and the frame 8. This anti-swaying wire 18 is used when the sheet material 5 is stretched linearly.

Next, the construction method of the smoke proof dripping wall 1 of the said structure is demonstrated. At the factory, the sheet material wound body 4 in the form in which the sheet material 5 is wound around the winding core 6 is manufactured, and is stored in the box 3 and transported to the construction site. Unlike the sheet glass, the sheet material 5 has no fear of breaking and is lightweight, so that the box 3 containing the sheet material roll 4 is very easy to transport and handle. Next, at the construction site, the box 3 is disposed so as to be perpendicular to the ceiling surface 2 at a position where the smoke-proof hanging wall 1 is to be formed, and attached to the ceiling and / or the wall. That is, in general, the smoke-proof hanging wall 1 is often provided so as to extend perpendicularly to the wall surface from a position in contact with the wall. In this case, the box 3 is disposed at a position in contact with the wall surface and attached to the ceiling and / or the wall. . In addition, when arrange | positioning the box 3 in the position away from the wall surface, the box 3 is fixed to a ceiling. Next, the guide rail 9 is attached to the ceiling surface 2. Thereafter, the sheet material 5 is pulled out from the box 3, and the slider 15 fixed to the upper side edge is passed through the guide rail 9. Thereafter, the frame body 8 is attached to the front end of the sheet material 5 via an elastic body, and the frame body 8 is disposed so as to be perpendicular to the ceiling surface 2 and is attached to the ceiling or disposed at a position in contact with the wall surface. In some cases, it is fixed to the ceiling and / or wall. Alternatively, a method may be employed in which the frame body 8 is first attached to a predetermined position perpendicular to the ceiling surface 2, and then the sheet material 5 is pulled out and the leading end thereof is fixed to the frame body 8.

  After the front end of the sheet material 5 is fixed to the frame body 8 and the frame body 8 is fixed to the ceiling surface 2 and / or the wall surface, the core 5 of the box 3 is rotated in the direction to rewind the sheet material 5 and the sheet The material 5 is stretched and the claw 13 is hooked on the ratchet 12 so that the sheet material 5 is not pulled out. Thereby, the sheet material 5 is held in a stretched state between the box 3 and the frame body 8. Thereafter, the wire 18 is stretched so as to sandwich the lower side edge of the sheet material 5, and the wire 18 is fixed to the box 3 and the frame 8. This wire 18 prevents the sheet material 5 from shaking. The wire 18 may be pulled out together with the sheet material 5. The construction is thus completed, and the smoke-proof hanging wall 1 is formed in a desired region along the ceiling surface 2.

  As described above, the smoke-proof hanging wall 1 can be formed by an operation of pulling out the sheet material 5 from the box 3 and stretching the sheet material 5 in a predetermined region. Since the formed smoke-proof hanging wall 1 does not use plate glass and uses a lightweight sheet material such as a glass fiber reinforced resin sheet, it is unlikely to be damaged and dropped even in an earthquake or the like. Even if it falls, it does not break like a plate glass and scatters around, and has the advantage of being safe.

In the above-described embodiment, in order to prevent the sheet material 5 from shaking, the pair of wires 18 disposed so as to sandwich the lower side edge of the sheet material 5 are used. For example, a guide rail similar to the guide rail 9 disposed on the upper side is provided at the position of the lower side edge of the sheet material 5 to provide a seat. A slider may be provided on the lower side edge of the material 5 and the slider may be guided by a guide rail. Further, as shown in FIGS. 5 and 6, so as to sandwich across the part regions of the sheet material 5 which is stretched between the boxes 3 and the frame 8 the entire length in the vertical direction, in a substantially V-shape It is good also as a structure which arrange | positions the rocking | fluctuation prevention member 21 formed with board | plate materials, such as a leaf | plate spring, with an appropriate space | interval, and attaches it to the guide rail 9, and prevents the sheet | seat material 5 from shaking. In order to attach the anti-sway member 21 to the guide rail 9, as shown in the drawing, a bent portion 21 a at the upper end of the anti-sway member 21 is inserted into the guide rail 9, and a restoring force in the direction in which the anti-sway member 21 spreads is applied. Arbitrary methods, such as fixing using it, or fixing the bending part 21a to the guide rail 9 with a screw, can be taken. The anti-sway member 21 may be directly attached to the ceiling surface 2 instead of being attached to the guide rail 9. The anti-sway member 21 can be used not only for anti-swaying of the linearly stretched sheet material 5 as shown, but also for anti-swaying of the curved sheet material. Further, the mechanism for preventing the sheet material 5 from shaking, such as the pair of wires 18 and the shaking preventing member 21, is not limited to being used alone, but may be used in combination.

In the above embodiment, in order to prevent the sheet material 5 stretched between the box 3 and the frame body 8 from sagging, an elastic material such as a rubber plate is provided between the front end of the sheet material 5 and the frame body 8. The body is attached, and an appropriate tension is applied to the sheet material 5. However, the present invention is not limited to this configuration, and when the sheet material 5 wound around the core 6 is used in a fully drawn state, the sheet material 5 is used. An elastic body such as a rubber plate may be attached between the core 6 and the core 6 so that an appropriate tension is applied to the sheet material 5. In order to construct the smoke-proof hanging wall having this configuration, the sheet material wound body 4 accommodated in the box 3 may be configured in such a manner that one end of the sheet material is connected in advance to the winding core via an elastic body.

  Next, a highly transparent glass fiber reinforced resin sheet (hereinafter referred to as a transparent sheet material) suitable for use as the sheet material 5 will be described. This transparent sheet material comprises 20 to 70% by weight of a glass fiber woven fabric and 80 to 30% by weight of a resin coating layer formed by impregnating and curing the resin to the glass fiber woven fabric. The difference in refractive index between the glass composition and the resin coating layer is ± 0.02 or less to impart transparency and improve the appearance.

  The glass fiber fabric is a material that becomes a base fabric of the transparent sheet material. As glass fiber which is a material of glass fiber fabric, general-purpose non-alkali glass fiber (E glass), acid-resistant alkali-containing glass fiber (C glass), high strength / high elastic modulus glass fiber (S glass, T glass, etc.) ), Alkali-resistant glass fibers (AR glass), etc., but non-alkaline glass fibers having high versatility are preferably used. The refractive index of the glass composition constituting the glass fiber is selected so that the difference from the refractive index of the resin used for impregnation is ± 0.02 or less, but if the refractive index on the resin side can be selected as desired, A glass composition having any refractive index may be used. As the glass composition, for example, those having a refractive index of about 1.4 to 1.7 are preferred, and those having a refractive index of 1.5 to 1.6 are more preferred. When glass fiber made of non-alkali glass is used, the refractive index is about 1.55 to 1.57.

  Examples of the weave structure of the glass fiber woven fabric include plain weave, satin weave, twill weave, oblique weave, and woven weave. Of these, plain weave, oblique weave and woven weave are preferred. Both the gap between adjacent warps and the gap between adjacent wefts in the glass fiber fabric are preferably 0.5 mm or less, and more preferably 0.2 mm or less. This is because when the gap between adjacent warp yarns or the gap between weft yarns in the glass fiber fabric is narrow, the flame is difficult to pass through the glass fiber fabric. The filament constituting the glass fiber fabric preferably has a diameter of 1 to 20 μm, more preferably 3 to 12 μm. Moreover, 5-70 tex is preferable and the count of glass fiber has more preferable 10-35 tex.

  The glass fiber fabric may be woven with one type of glass fiber, or may be woven with two or more types of glass fibers. For example, the warp and the weft may have the same glass fiber composition and may have different glass fiber counts.

  The glass fiber fabric is preferably surface-treated with a silane coupling agent that is usually used as a glass fiber treating agent for the purpose of improving the durability of the formed sheet material. As a result, the glass fiber fabric and the cured resin can be satisfactorily bonded. In addition, since only a small amount of the silane coupling agent adheres to the surface of each glass fiber, it does not substantially affect the light transmission characteristics and air permeability of the glass fiber fabric.

  The fiberglass fabric may be subjected to a fiber opening treatment. The volume and area occupied by warps and wefts formed by glass fibers by spreading the glass fibers that make up the glass fiber fabric or flattening the cross-sectional shape of the glass fibers by opening the fiber. The range can be increased or deformed. By reducing the thickness of the glass fiber fabric by the fiber opening treatment, the total light transmittance can be increased. At the same time, the fiber can be deformed into a shape suitable for resin impregnation by the fiber opening process.

  The resin coating layer is formed by impregnating a resin into a glass fiber fabric and curing it. The resin coating layer enters a gap between the glass fibers of the glass fiber fabric and forms resin layers on the front and back surfaces. Various resins such as a thermoplastic resin and a thermosetting resin can be used for forming the resin coating layer. In particular, the resin is cured by heat curing or by irradiation with light such as ultraviolet rays. It is preferable to use a curable resin such as a photo-curing type. Such a heat or photo-curing type resin has an advantage that it is easy to be impregnated into a glass fiber woven fabric in an uncured state at about room temperature, with a low viscosity.

  As the material of the resin coating layer, a material having a refractive index difference of ± 0.02 or less from the glass composition of the glass fiber fabric is used. Thus, by making the difference in refractive index between the glass fiber woven fabric and the resin coating layer sufficiently small as ± 0.02 or less, the glass fiber woven fabric cannot be visually recognized in the resin coating layer. Therefore, the part formed with the glass fiber fabric and the resin coating layer can be made transparent, and the total light transmittance of the transparent sheet material can be made sufficiently high. The method for measuring the refractive index of the resin coating layer is in accordance with “Method for measuring refractive index of plastic” in JIS K7142.

  As the curable resin used for forming the resin coating layer, it is preferable to use a vinyl ester resin, an unsaturated polyester resin, an epoxy resin, etc., because it has excellent heat resistance, chemical resistance, mechanical strength, and curing characteristics. More preferred are vinyl ester resins. The curable resin impregnated into the glass fiber fabric may contain additives such as a flame retardant, an ultraviolet absorber, a filler, and an antistatic agent. Examples of the flame retardant include aluminum hydroxide, magnesium hydroxide, trichloroethyl phosphate, triallyl phosphate, ammonium polyphosphate, and phosphate ester. Examples of the ultraviolet absorber include benzotriazole. Examples of the filler include calcium carbonate, silica, and talc. Examples of the antistatic agent include surfactants. These additives may be in the form of particles, and in the case of particles, the particle size is preferably 10 μm or less, more preferably 5 μm or less. This is because when the particle size is small, the total light transmittance is improved and the haze is lowered.

  The ratio of the glass fiber fabric and the resin coating layer in the transparent sheet material is 20 to 70% by weight for the glass fiber fabric and 80 to 30% by weight for the resin coating layer. When the glass fiber fabric is less than 20% by weight, the amount of the resin is increased, and the nonflammability of the obtained transparent sheet material is lowered. On the other hand, when the glass fiber fabric exceeds 70% by weight, the amount of the resin in the surface layer of the transparent sheet material to be obtained may decrease, and the pattern of the glass fiber fabric may appear, and whitening due to poor impregnation may occur. It may occur, and transparency is further reduced.

The mass of the glass fiber woven fabric per unit area of the transparent sheet material is determined in consideration of the strength, durability and resin impregnation property of the transparent sheet material, and may be, for example, about 10 to 300 g / m ^2. In particular, in order to improve the strength and durability of the glass fiber fabric and the impregnation property of the resin into the glass fiber fabric, the mass of the glass fiber fabric is preferably ²⁰ to 300 g / m ² . By setting the mass of the glass fiber fabric to 20 g / m ² or more, the strength of the transparent sheet material can be sufficiently increased. Moreover, by setting the mass of the glass fiber fabric to 300 g / m ² or less, the ratio of the glass fiber fabric per unit area of the transparent sheet material is decreased, the gap between the glass fiber fabrics is sufficiently increased, and the resin impregnation is poor. Can be prevented. When the mass of the glass fiber fabric per unit area of the transparent sheet material is set to 150 g / m ² or more, one thick glass fiber fabric may be used, or a plurality of thin glass fiber fabrics may be used. May be. From the viewpoint of improving the impregnation property, it is preferable to use a plurality of thin glass fiber fabrics.

The mass of the resin coating layer per unit area of the transparent sheet material may be about 10 to 500 g / m ² . By setting the mass of the resin coating layer to 10 g / m ² or more, it is possible to prevent the pattern of the glass fiber fabric from being raised or the resin from appearing whitened due to poor impregnation. In addition, by setting the mass of the resin to 500 g / m ² or less, the ratio of the resin, which is a relatively flammable portion of the transparent sheet material, is kept low, and the transparent sheet material is excellent in flame retardancy. Can do.

It is preferable to select the material of the resin forming the resin coating layer so that the difference in Abbe number between the glass composition constituting the glass fiber in the glass fiber fabric and the resin coating layer is 30 or less. By suppressing the difference in Abbe number to 30 or less, scattering in the visible light region can be reduced at the interface between the glass fiber fabric and the resin coating layer, and coloring at the interface can be suppressed. The Abbe number is a numerical value for evaluating the chromatic aberration of the transparent body, and is represented by the Abbe number V = (n _D −1) / (n _F −n _C ). Here, n _D is a refractive index for light having a wavelength of 589.2 nm, n _F is a refractive index for light having a wavelength of 486.1 nm, and n _C is a refraction for light having a wavelength of 656.3 nm. Rate. In addition, although there is no restriction | limiting in particular in the Abbe number of a glass composition, For example, it is preferable that it is the range of 35-75, and it is still more preferable that it is the range of 50-70.

  The transparent sheet material preferably has a total light transmittance of 80% or more and a haze of 30% or less, a total light transmittance of 85% or more, and a haze of 20% or less. Is more preferable, and it is preferable to select the resin material so as to be within these numerical ranges. Here, the total light transmittance and haze are numerical values indicating how transparent the sheet is. The greater the total light transmittance and the smaller the haze, the higher the transparency. In addition, the measuring method of the total light transmittance of a transparent sheet material follows JIS K 7105 "Optical characteristic test method of plastic", "5.5 Light transmittance and total light reflectance". The haze measurement method follows JIS K 7105 “Testing method for optical properties of plastic” and “6.4 haze”.

  The transparent sheet material having the above-described configuration can be manufactured using a conventional method for manufacturing a fiber-reinforced resin sheet. For example, a glass fiber fabric is continuously run, and a first carrier film coated with an uncured resin is pressed against one surface of the glass fiber fabric while continuously running, and the other side of the glass fiber fabric is pressed. The second carrier film is pressed against the surface while continuously running, and the glass fiber fabric and uncured resin are sandwiched between the first and second carrier films, and the resin is cured. It can manufacture using the continuous shaping | molding method shape | molded in a transparent sheet material. It can also be manufactured by a batch method using a mold.

  The transparent sheet material having the above configuration is excellent in transparency, flame retardancy, and high strength, and thus is very suitable as the sheet material 5 for forming the smoke-proof hanging wall 1. In addition, as the sheet material 5, it is also possible to use a glass fiber reinforced resin sheet having a lower transparency than the above transparent sheet material, and the composition of the glass fiber reinforced resin sheet is a composition of the above transparent sheet material, The thing according to what remove | excluded the characteristic regarding a refractive index can be illustrated.

  Although preferred embodiments of the present invention have been described above, the present invention is not limited to these embodiments, and it goes without saying that various modifications can be made within the scope of the claims. .

1 is a schematic perspective view of a smoke-proof hanging wall according to a preferred embodiment of the present invention. 1 is a schematic cross-sectional view taken along line AA in FIG. (A) is schematic sectional drawing which shows the box provided in the smoke-proof hanging wall shown in FIG. 1, and the sheet | seat material etc. which were pulled out from it, (b) is schematic sectional drawing seen from the BB arrow of (a). FIG. 1 is a schematic cross-sectional view taken along line CC in FIG. The schematic perspective view of the smoke-proof hanging wall which concerns on other embodiment of this invention. FIG. 5 is a schematic cross-sectional view taken along the line DD in FIG.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Smoke proof wall 2 Ceiling surface 3 Box 4 Sheet material winding body 5 Sheet material 6 Core 7 Slit 8 Frame body 9 Guide rail 11 Sheet material fixing means 12 Ratchet 13 Claw 15 Slider 18 Wire material 21 Shaking prevention member

Claims (5)

A sheet material wound body, which is a box arranged so as to be perpendicular to the ceiling surface and wound up a sheet material composed of a glass fiber reinforced resin sheet having flexibility and transparency. A box that accommodates and has a slit for drawing out the sheet material; a frame for fixing the leading edge of the sheet material that is disposed perpendicular to the ceiling surface at a position spaced from the box; and the box and the frame A guide rail attached to the ceiling surface so as to extend between the sheet material, the sheet material is pulled out from the box, the upper side edge of the sheet material is guided by the guide rail, and the tip is fixed to the frame body Thus, it is always installed in a state stretched between the box and the frame, and further, an elastic body for applying tension to the sheet material is provided between the sheet material and the frame. Is provided Smoke hanging wall, wherein the door. A sheet material which is a box arranged so as to be perpendicular to a ceiling surface, and is formed by winding a sheet material made of a glass fiber reinforced resin sheet having flexibility and transparency around a core. A box that accommodates the winding body and has a slit for drawing out the sheet material, a frame for fixing the leading edge of the sheet material that is disposed perpendicular to the ceiling surface at a position spaced from the box, and the box And a guide rail attached to the ceiling surface so as to extend between the frame and the frame, and the sheet material is pulled out from the box so as to be pulled out from the core, and the upper side edge of the sheet material Is fixed by the guide rail, and the tip is fixed to the frame, so that it is always installed in a stretched state between the box and the frame, and further between the sheet material and the core. And the above Smoke hanging wall, characterized in that the elastic member for applying tension to the bets material is provided.   A substantially V-shaped anti-sway member is attached to the guide rail or the ceiling so as to sandwich a partial region of the sheet material stretched between the box and the frame over the entire length in the vertical direction. The smoke-proof hanging wall according to claim 1 or 2.   A box that accommodates a sheet material wound form in which a sheet material composed of a glass fiber reinforced resin sheet having flexibility and transparency is wound and has a slit for drawing out the sheet material is provided on the ceiling surface. A step of attaching the guide rail to the ceiling surface, a step of pulling out the sheet material from the box, guiding it to the guide rail and stretching it to a predetermined position, and a tip of the sheet material A method for constructing a smoke-proof hanging wall, comprising a step of attaching a frame body through an elastic body and arranging the frame body so as to be perpendicular to a ceiling surface.   One end of a sheet material made of a glass fiber reinforced resin sheet having flexibility and transparency is connected to a core via an elastic body, and the sheet material is wound around the core. A step of accommodating a sheet material winding body and a box provided with a slit for drawing out the sheet material so as to be perpendicular to the ceiling surface; a step of attaching a guide rail to the ceiling surface; and the sheet material from the box, Pulling out the sheet material so that it is completely pulled out from the core, guiding it to the guide rail and stretching it to a predetermined position, attaching a frame body to the tip of the sheet material, and attaching the frame body to the ceiling surface A method for constructing a smoke-proof hanging wall, comprising a step of being arranged so as to be perpendicular to the wall.

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