JP2015139950A - Fire shielding sheet, fire shielding sheet for building interior, wall with the same and construction method of wall - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a light weight fire shielding sheet capable of being transported to a construction site or the like with condition where it is wound with a rolled state, excellent in processability such as capable of being easily cut to a predetermined shape in the construction site or the like, and capable of being added excellent designability.SOLUTION: The invention relates to a fire shielding sheet where a decorative sheet (A) and a metal base having the melting point of 1000°C or more and thickness of 30 μm to 90 μm are laminated.

Description

  The present invention relates to a flameproof sheet that can be attached to, for example, a wall or ceiling of a building.

  A decorative panel, decorative paper, etc. are often affixed to the walls, ceilings, and the like of buildings for the purpose of imparting designability, incombustibility and the like suitable for building interiors. In particular, a decorative panel having excellent incombustibility and the like is often affixed to the wall and ceiling around the kitchen, and such a decorative panel that has passed a predetermined incombustibility certification test is used.

  The decorative panel having excellent nonflammability includes, for example, a base material layer composed of an impregnated sheet impregnated with a slurry containing an inorganic binder and an inorganic filler in an inorganic fiber sheet, and an organic binder in the inorganic fiber sheet. And a prepreg impregnated and dried with a slurry containing an inorganic filler and a thermosetting resin-impregnated pattern paper are known to be integrated with heat and pressure (see, for example, Patent Document 1).

  However, since the decorative panel is usually about 10 kg per sheet and has a panel shape, there is a problem that the amount that can be conveyed to the construction site at a time is limited.

  Moreover, when constructing the decorative panel on a wall or the like, it is necessary to cut the decorative panel into a predetermined shape or the like according to the shape of the foundation that constitutes the adherend surface of the wall.

  However, conventional decorative panels made of aluminum hydroxide plate, cement plate, calcium silicate plate, etc. are difficult to cut, and there is a problem that the decorative panel is cracked or non-combustible paper is peeled off during cutting. .

  In general, many decorative panels having a size of 950 mm × 1850 mm are in circulation. When such a regular decorative panel is affixed to a base surface having an arbitrary shape such as an entrance corner or an exit corner, it is absolutely necessary to use two or more makeup panels. When the two or more decorative panels are used, a joint between the decorative panels is formed, and as a result, the design of the building interior may be deteriorated.

  In addition, as a decorative material excellent in incombustibility, for example, a decorative sheet in which a decorative paper or the like is attached to the surface of an aluminum plate has been studied.

  However, since the aluminum plate normally melts in an environment of about 650 ° C., the decorative sheet may not be able to sufficiently block the flame in the event of a fire or the like.

JP 2011-037040 A

  The problem to be solved by the present invention is lightweight, can be transported to a construction site or the like in a roll-up state, and has excellent workability such as being easily cut into a predetermined shape at the construction site, And it is providing the flame shield sheet which can provide the outstanding design property.

  The present inventors have found that the above problem can be solved by using a sheet provided with a metal substrate having a predetermined melting point and thickness.

  That is, the present invention relates to a flameproof sheet characterized in that a decorative sheet (A) and a metal substrate (B) having a melting point of 1000 ° C. or higher and a thickness of 30 μm to 90 μm are laminated. Is.

  The present invention also includes a step (1) of unwinding part or all of the flame shield sheet wound up in a roll shape and cutting it as necessary, and affixing the flame shield sheet to a base It is related with the construction method of the wall characterized by having the process (2) to do.

  The flame-shielding sheet of the present invention has excellent flame-shielding properties, is excellent in transportability and workability, and can prevent deterioration in design properties caused by the joints between the sheets. It can be used by sticking to the interior of buildings, walls and ceilings around kitchens.

It is the conceptual diagram which looked at the flame-proof sheet | seat produced in Example 1 from the side surface.

  The flameproof sheet of the present invention is characterized in that a decorative sheet (A) and a metal substrate (B) having a melting point of 1000 ° C. or higher and a thickness of 30 μm to 90 μm are laminated.

  As the flameproof sheet, it is preferable to use a sheet having a total thickness of 50 μm or more. Using a sheet having a thickness of 100 μm to 400 μm can be easily wound into a roll, is lightweight, and is used during construction. It is more preferable for obtaining a light-shielding sheet that hardly forms folds or the like.

  As the decorative sheet (A) constituting the flameproof sheet, for example, a paper sheet, a resin sheet, a composite sheet in which a resin sheet is laminated on one or both sides of a paper sheet, or another resin on one or both sides of a resin sheet Among the composite sheets and the like on which the sheets are laminated, those having a decorative surface can be used.

  As the paper sheet, those commonly used as interior decorative paper can be used. For example, generally used are high-quality paper, thin paper, reinforced paper, impregnated paper impregnated with latex resin such as acrylic resin, and the like. can do. Among these, as the paper sheet, it is preferable to use the impregnated paper because it is easy to impart designability or the like to the surface by printing or the like and can prevent shrinkage due to the influence of moisture, and latex impregnated paper is used. It is more preferable.

  As the resin sheet, for example, a sheet made of polyester such as polyethylene terephthalate, polyethylene, polypropylene, a copolymer of polyethylene and polypropylene, acrylonitrile-butadiene-styrene copolymer (ABS), and the like can be used. It is preferable to use the following sheet. As the resin sheet, a resin sheet composed of a single layer or a resin sheet composed of multiple layers in which the same or different resin layers are laminated can be used.

  As the decorative sheet (A), a composite sheet in which the paper sheet and the resin sheet are laminated can be used. Examples of the composite sheet include a composite sheet in which a resin sheet is laminated on one or both sides of a paper sheet.

  Moreover, as the composite sheet, a sheet having a resin layer formed by applying various resins on one side or both sides of the paper sheet or resin sheet and drying it can be used.

  Since the composite sheet has excellent wettability with respect to ink or the like, for example, when printing is performed on the surface of a resin sheet or a resin layer constituting the composite sheet, a relatively clear image or the like can be formed.

  Moreover, since the composite sheet hardly causes so-called paper breakage, it can be attached to, for example, a corner of a protruding corner or a corner of a wall, a column or a beam.

  As the decorative sheet (A), in order to prevent shrinkage or the like due to moisture or the like, for example, a sheet containing glass fiber or carbon fiber can be used. In addition, as the decorative sheet (A), for the purpose of imparting good flame retardancy, a sheet containing a flame retardant such as guanidine sulfamate or guanidine phosphate can be used.

  Moreover, as said decorative sheet (A), when it adheres with the said metal base material (B) using an adhesive agent etc., in order to improve the adhesiveness with an adhesive bond layer further, the primer process is carried out on the single side | surface. And those subjected to surface treatment such as corona treatment can be used.

  As the decorative sheet (A), one having a design surface on one side is used.

  As said design surface, the surface which has a pattern which consists of a character, a figure, a symbol, a color etc. on the single side | surface of the said decorative sheet (A) is mentioned, for example. The pattern can be formed by printing or the like.

  Examples of the printing method include a gravure printing method, an offset printing method, a silk screen printing method, a transfer printing method, and an ink jet printing method. In particular, as the printing method, it is preferable to employ a gravure printing method because a printing surface having a clear and high design property can be formed without reducing the production efficiency.

  A top coat layer may be provided on the design surface constituting the decorative sheet (A) for the purpose of imparting more excellent scratch resistance and stain resistance.

  Examples of the topcoat layer include a layer formed by applying a coating agent containing a resin or the like and curing the coating agent. Examples of the resin include thermosetting resins, active energy ray-curable resins such as ultraviolet rays and electron beams, and specific examples include acrylic resins, urethane resins, and acrylic urethane resins.

  As a metal base material (B) which comprises the flame-shielding sheet | seat of this invention, what was equipped with the flame-shielding property of the level which can interrupt | block a flame without melt | dissolving etc. also under high temperature can be used.

  As said metal base material (B), when providing the said flame-shielding property, a melting | fusing point uses 1000 degreeC or more. Thereby, the flame-proof sheet | seat provided with the outstanding flame-proof performance can be obtained.

  Moreover, as said metal base material (B), while having melting | fusing point of the said range, a 30-90-micrometer-thick thing is used. Thereby, since the flame shield sheet of the present invention can be easily wound into a roll, it is possible to realize excellent transportability and workability at each stage as compared with a conventional decorative panel. . In addition, when using a multilayer metal base material as said metal base material (B), the thickness shall include the thickness of the adhesive bond layer which joins two or more metal base materials.

  As the metal substrate (B), it is preferable to use a metal base having a thickness in the range of 40 μm to 80 μm in order to obtain a flameproof sheet that is difficult to form a crease or the like during construction.

  As said metal base material (B), the base material which consists of iron, copper, nickel, those alloys etc. can be used, for example. Especially, as said metal base material (B), it is preferable to use the base material which consists of iron in order to make the flame-shielding property further excellent and winding-up property to a roll etc. compatible.

  In addition, as the metal substrate (B), a single layer metal substrate composed of a single material, a metal substrate composed of the same or different materials, and laminated using an adhesive or the like Metal substrates that have been made can be used.

  Moreover, as said metal base material (B), what was excellent in rust prevention property can be used, for example, zinc plating, chromium plating, nickel plating, etc. on the one or both surfaces of said metal base material (B) It is preferable to use what was done.

  The flame shield sheet of the present invention can be produced by bonding the decorative sheet (A) and the metal base material (B) using an adhesive or a pressure-sensitive adhesive. Specifically, the flameproof sheet is coated with an adhesive or the like on one or both sides of the decorative sheet (A) and the metal base material (B), and then bonded together. Accordingly, it can be produced by curing for a certain period.

  Examples of a method for applying the adhesive or the like on the back surface of the decorative sheet (A) include a method using a roll coater, a gravure coater, a die coater, a comma coater, a knife coater, or the like.

  When bonding the said decorative sheet (A) and the said metal base material (B), you may crimp | bond them by a roll press method etc. as needed. Moreover, you may heat in the case of the said crimping | compression-bonding as needed.

  It is preferable that the flameproof sheet obtained by bonding the decorative sheet (A) and the metal substrate (B) is cured for a certain period in a state of being wound in a roll shape, for example.

  Examples of the adhesive that can be used for bonding the decorative sheet (A) and the metal substrate (B) include, for example, urethane adhesives, polyethylene adhesives, polyester adhesives, acrylic adhesives, and rubber adhesives. An agent or the like can be used.

As the flameproof sheet of the present invention, the mass of organic matter that can be contained per 1 m ^{2 of the} flameproof sheet is preferably 200 g or less in order to obtain the certification of the non-combustible material defined by the Building Standard Law.

  Moreover, as the flame barrier sheet of the present invention, a paper-based substrate or a back surface of the metal substrate (B) constituting the flame shield sheet (a surface opposite to the surface on which the decorative sheet (A) is laminated) is further provided. It is preferable to use a laminate of resin base materials because it is easy to adhere to a base constituting a wall or the like.

  As the paper-based substrate and the resin substrate, those similar to the paper-based sheet and resin sheet exemplified as those constituting the decorative sheet (A) can be used.

  Moreover, as a flame-shielding sheet | seat of this invention, it is preferable to use what has an adhesive bond layer or an adhesive layer (C) previously on the back surface in order to improve the working efficiency in a construction site further. The adhesive layer or the pressure-sensitive adhesive layer (C) may be directly provided on the surface opposite to the surface of the metal substrate (B) on which the decorative sheet (A) is laminated. You may provide through the layer which consists of a material or a resin base material.

  The flame barrier sheet obtained by the above method can be used exclusively for interior decoration of buildings. In particular, the flameproof sheet can be suitably used for the wall surface, ceiling, etc. around the kitchen.

  The flame-shielding sheet of the present invention obtained by the above method is easy to roll up as described above, and can prevent wrinkles and creases that can occur when the winding is unwound. is there. The ease of winding of the flame shield sheet can be evaluated by the following method.

From a composite sheet obtained by laminating a latex-impregnated paper (basis weight 60 g / m ² ) and a polyethylene terephthalate sheet (thickness 16 μm) having a decorative surface on one side of the metal substrate (B) using an adhesive. The resulting decorative sheet is bonded with an adhesive and cut into a length of 300 mm and a width of 25 mm.

  The test piece is placed on the surface of a horizontal table so that the decorative surface is the surface (upper surface), and the test piece is projected 200 mm in the length direction from the end portion (straight portion) of the table. In that case, the distance which the said test piece bent in the perpendicular | vertical direction (downward) with respect to the horizontal surface of the said table | surface is measured.

  It is preferable that the distance is a flame shielding sheet in the range of 50 mm to 180 mm, which is easy to wind up in a roll shape or the like, and that prevents generation of wrinkles or creases when the winding is unwound. .

  Examples of the method of applying the flameproof sheet to a base constituting the wall or the like include a method of attaching the flameproof sheet to the surface of the base constituting the wall or the like using a conventionally known adhesive or adhesive sheet.

  Examples of the base include a base made of a non-combustible material generally used for building interior and exterior members. Specific examples of the incombustible material include gypsum board, calcium silicate board, fiber cement board, and tile.

  Since the flame shield sheet of the present invention is relatively flexible, it can be stored, transported, etc. in a state of being wound in a roll shape, for example. Therefore, as a method of sticking the flame shield sheet to a wall or the like, the step (1) of unwinding part or all of the flame shield sheet wound up in a roll shape and cutting as necessary. And by passing through the step (2) of applying the flameproof sheet to the base, the flameproof sheet can be applied to the base of the wall. The flame shield sheet may be cut to a desired size after a part of the flame shield sheet is pasted on the base, and the flame shield sheet obtained by cutting in the step (1) is pasted on the base or the like. May be.

  Examples of the method for sticking the light shielding sheet to the base include a method of applying an adhesive or a pressure-sensitive adhesive to the back surface of the light shielding sheet and then sticking it to the base. Moreover, when using a flameproof sheet having an adhesive layer or a pressure-sensitive adhesive layer (C) in advance on the back surface as the light-shielding sheet, the adhesive layer or pressure-sensitive adhesive layer (C) of the flameproof sheet, The method of sticking the said base | substrate is mentioned.

  The wall constructed by the above method can constitute an interior or exterior of a building. Since the said wall is excellent in flame-shielding property, it can be used suitably for the structure of a kitchen wall etc., for example.

  Hereinafter, the present invention will be specifically described with reference to Examples and Comparative Examples.

Example 1
One surface of latex-impregnated paper (basis weight 60 g / m ² ) is coated with 5 g / m ² of a two-component curable urethane adhesive, and an easy-adhesion-treated polyethylene terephthalate sheet (thickness) The composite sheet (X-1) was obtained by pasting 16 μm).

  Next, a solid color printing layer is formed on the surface of the polyethylene terephthalate sheet constituting the composite sheet (X-1) using a gravure printing machine, and a gravure printing machine is used on the surface of the solid printing layer. A decorative layer (X-2) was obtained by forming a grain pattern layer and forming a topcoat layer on the surface of the pattern layer.

Next, 10 g / m ² of a two-component curable urethane adhesive was applied to one side of an iron foil (melting point: 1540 ° C., thickness: 50 μm).

  Next, the coated surface and the latex-impregnated paper side surface constituting the decorative sheet (X-2) were laminated and thermocompression bonded to obtain a flameproof sheet of the present invention (FIG. 1).

<Comparative Example 1>
A flameproof sheet was prepared in the same manner as in Example 1 except that iron foil (melting point 1540 ° C., thickness 100 μm) was used instead of the iron foil (melting point 1540 ° C., thickness 50 μm).

<Comparative Example 2>
A decorative sheet was prepared in the same manner as in Example 1 except that an aluminum foil (melting point 650 ° C., thickness 50 μm) was used instead of the iron foil (melting point 1540 ° C., thickness 50 μm).

<Comparative Example 3>
A decorative sheet was prepared by laminating a melamine-impregnated printing paper having a thickness of 100 μm on a surface of a glass cloth having a thickness of 200 μm (manufactured by Nanya Plastic Co., Ltd., WEA7628) with a hot press.

<Comparative Example 4>
A surface of the latex-impregnated paper constituting the decorative sheet (X-2) is coated on one surface of a 6 mm-thick calcium silicate plate with a moisture-curable urethane hot melt adhesive 40 g / m ^2. The laminate and thermocompression bonded were used as a decorative board.

<Nonflammable performance test>
Whether the flame shield sheet, decorative sheet or decorative plate obtained in the examples and comparative examples correspond to the “non-combustible material” defined in Article 2, Item 9 of the Building Standard Law, ISO 1182 non-flammability test and ISO 5660 -1 It was tested and evaluated according to an exothermic test (corn calorimeter method).

Calorific value measured by a cone calorimeter method, a what was 7.2MJ / ^{m 2} or less "◎", those were exceeded 7.2MJ / ^{m 2} 8.0MJ / ^{m 2} or less, "○ And those that exceeded 8.0 MJ / m ² were evaluated as “x”.

  In addition, when measured by the above method, the flame-proof sheet, the decorative sheet or the decorative board was confirmed to have a harmful deformation such as crack, perforation, melting, etc., “×”, the harmful deformation could not be confirmed Was evaluated as “◯”.

<Flame shielding performance test>
During the incombustible performance test, the surface of the aluminum sheet provided under the flameproof sheet, the incombustible sheet or the decorative board was visually observed after the incombustible performance test.

  “◎” indicates that no scorch mark was found on the surface of the aluminum sheet, “◯” indicates that a slight scorch mark was confirmed, and “△” indicates that a clear scorch mark was confirmed. A scoring mark or melting confirmed was evaluated as “×”.

<Workability (workability, cutter cut test)>
Using a commercially available circular cutter (“C-1500P” manufactured by NTCutter), the flame barrier obtained in the examples and comparative examples was made by rotating the cutter blade once under the conditions of a loading load of 750 g and a rotation radius of 45 mm. An attempt was made to cut a sheet, a non-combustible sheet or a decorative board into a circle.

  The used circular cutter has a support shaft and an annular cutting blade fixing member centered on the support shaft, and an annular weight can be loaded on the upper part of the annular cutting blade fixing member. A circular cutting cutter having a configuration in which a spindle and a cutting blade are in contact with an object to be cut.

    (Double-circle): The said flame-proof sheet | seat, the noncombustible sheet | seat, or the decorative board could be cut | judged circularly.

    X: The flameproof sheet, noncombustible sheet or decorative board could not be cut into a circle.

  <Workability (curvature)>

  Attempting with both hands to apply the flameproof sheets, decorative sheets and decorative plates obtained in the examples and comparative examples along the protruding corners of the medium density fiberboard having protruding corners composed of 2R rounded corners. .

  The flame shield sheet and the like can be easily applied along the protruding corners, and the surface of the flame shield sheet or the like that has not been cracked is `` ◎ '', by applying a certain force, The flame shield sheet or the like can be applied along the projecting corner, and “O” indicates that no cracks occurred on the surface of the flame shield sheet or the like, and the flame shield sheet or the like is applied to the projecting corner. Although it was able to be applied along the surface of the flame-shielding sheet or the like, cracks or the like has occurred, or a part of which has bulged without conforming to the shape of the protruding corner "△", What was not able to apply a flame-shielding sheet etc. along the said protruding corner part was evaluated as "x".

<Rewindability (roll packing)>
Attempts were made to wrap the flame shield sheets, decorative sheets and decorative plates obtained in the examples and comparative examples around a 3-inch paper tube.

  (Double-circle): The flame shield sheet etc. could be easily wound around the said paper tube, and it was able to be set as the roll-shaped package.

  ○: Although a flame shield sheet or the like could be wound around the paper tube and formed into a roll-shaped package, the repulsive force caused a gap between the flame shield sheet and the like when the roll-shaped package was formed. A slight gap was formed.

  Δ: Although a flameproof sheet or the like could be wound around the paper tube, cracks or elongation of the sheet or the like occurred on the surface.

  X: The flameproof sheet or the like could not be wound around the paper tube.

<Mass>
The masses of the flame shield sheets, decorative sheets and decorative plates obtained in Examples and Comparative Examples cut into 100 mm squares were measured using an electronic balance, and the mass per unit area was calculated.

1 decorative sheet 2 metal substrate 3 flameproof sheet

As the flameproof sheet, it is preferable to use a sheet having a total thickness of 50 μm or more. Using a sheet having a thickness of 100 μm to 400 μm can be easily wound into a roll, is lightweight, and is used during construction. It is more preferable for obtaining a flameproof sheet that hardly forms a crease or the like.

Examples of the method of applying the flameproof sheet to the base include a method of applying an adhesive or a pressure-sensitive adhesive to the back surface of the flameproof sheet and then sticking it to the base. Moreover, when using the flame-shielding sheet which has an adhesive bond layer or an adhesive layer (C) previously on the back surface as the flame- proof sheet, the adhesive layer or the adhesive layer (C) of the flame-shield sheet and The method of sticking the said foundation | substrate is mentioned.

Claims (9)

A flameproof sheet comprising a decorative sheet (A) and a metal substrate (B) having a melting point of 1000 ° C. or higher and a thickness of 30 μm to 90 μm. ^{2. The} flame shield sheet according to claim 1, wherein the total amount of organic substances that can be contained per 1 m ^{2 of the} flame shield sheet is 200 g or less. The flameproof sheet according to claim 1 or 2, wherein the metal substrate (B) is a substrate made of iron, copper or nickel. The paper base material or the resin base material is laminated on the surface opposite to the surface of the metal base material (B) on which the decorative sheet (A) is laminated. Flameproof sheet. Furthermore, the flame-proof sheet | seat of any one of Claims 1-4 which has an adhesive bond layer or an adhesive layer (C). The flameproof sheet for building interiors which consists of a flameproof sheet of any one of Claims 1-5. The wall by which the flame-proof sheet of any one of Claims 1-5 was affixed on the foundation | substrate. The wall according to claim 6, wherein the base is a base made of a noncombustible material. The step (1) of unwinding the part or all of the flame shield sheet according to claim 1 wound up in a roll shape and cutting as necessary, and affixing the flame shield sheet to the base A wall construction method comprising the step (2).

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