JP2015214129A - Nonflammable sheet - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a nonflammable sheet formed of a metal thin film and a combustible paper substrate and, in particular, to provide a nonflammable sheet which is used for a building material such as a floor material, a wall material, a ceiling material and a partition material and has sufficient nonflammable property and excellent designability and workability.SOLUTION: There is provided a composite sheet formed by laminating a paper substrate on a metal thin film, wherein the paper substrate is set to have a thickness of 20 to 100 μm.

Description

  The present invention relates to a non-combustible sheet, and in particular, a non-combustible material that can be used as a surface material such as a flooring material, a wall material, a ceiling material, and a partition material for a building that requires non-combustible performance specified by the Building Standard Law. It is related with a property sheet.

  Conventionally, building interior materials such as flooring and wallpaper are required to have flame retardancy, and those using vinyl chloride resin have been widely used. However, since a resin composition containing a halogen such as a vinyl chloride resin generates a large amount of smoke during combustion and a toxic gas such as an acidic gas or carbon monoxide, the use of a material containing no halogen is required. It has been demanded.

  In response to such a demand, it has been proposed to use a polyolefin resin instead of the vinyl chloride resin. However, the vinyl chloride resin containing a large amount of halogen having flame retardancy was easy to make the flame retardant, but in the case of the polyolefin resin, a non-halogen flame retardant technology is required. For such problems, Patent Document 1 proposes the use of metal hydroxides such as aluminum hydroxide and magnesium hydroxide, and inorganic fillers.

  The use of special flame retardants such as triazine derivatives has also been proposed (Patent Document 2).

JP-A-6-182916 JP 2010-222402 A

  However, in the method described in Patent Document 1, since these metal hydroxides and the like require a large amount of addition in order to exhibit a flame retardant effect, they affect the physical properties of the resin, and wallpaper and the like. When used as a thin material, there was a big problem in workability.

  In addition, special flame retardants such as triazine derivatives described in Patent Document 2 have a problem of increasing costs because they are expensive, although they have excellent flame retardant performance.

  The present invention has been developed in consideration of such circumstances and has been developed in consideration of environmental protection, and without using an expensive flame retardant, has excellent non-flammability performance and may generate toxic gases during combustion. The object is to provide a non-combustible sheet that is excellent in workability.

  A first aspect of the present invention is a noncombustible sheet in which a combustible paper base material is provided on a metal thin film, and the paper base material has a thickness of 20 to 100 μm. is there.

  Moreover, the 2nd viewpoint of this invention is invention based on a 1st viewpoint, Comprising: The said metal thin film is 0.03-200 micrometers in thickness, It is a nonflammable sheet | seat characterized by the above-mentioned.

  A third aspect of the present invention is the invention based on the first aspect or the second aspect, wherein the paper base is Japanese paper, kraft paper, impregnated paper, printing base paper, printing coated paper. A nonflammable sheet characterized by being a kind selected from the group consisting of titanium paper, inter-paper reinforced paper, and lightweight paperboard.

  Furthermore, a fourth aspect of the present invention is the nonflammable sheet according to the first to third aspects, wherein an ink layer is formed on the surface of the paper base. It is.

  Furthermore, a fifth aspect of the present invention is the non-combustible sheet according to the first to fourth aspects, wherein a paper base is laminated on the back surface of the metal thin film. It is.

  In the first aspect of the present invention, the non-combustible sheet of the present invention is used as a surface material for building materials such as floor materials, wall materials, ceiling materials, and partition materials for buildings that require non-combustible performance as defined by the Building Standard Law. If used, the effect of the metal thin film layer in the non-combustible sheet of the present invention can suppress the generation of combustible gas from the building material itself, and the non-combustibility test by the corn calorimeter method defined by the Building Standards Act In, it can give the nonflammability to pass.

  In the 2nd viewpoint of this invention, the cutting | disconnection operation | work by the cutter knife on the spot can be made easy by setting the thickness of the metal thin film of the nonflammable sheet | seat of this invention to 0.03-200 micrometers.

  In the third aspect of the present invention, since the metal thin film can be reinforced by the paper-based substrate, even when a very thin metal thin film of about 0.03 μm is used, the non-combustible sheet is formed without damaging the metal thin film. Can be provided.

  In the 4th viewpoint of this invention, the nonflammable sheet excellent in the designability can be provided by laminating | stacking the paper-type base material which provided the ink layer in the metal thin film.

  In the 5th viewpoint of this invention, since the paper-based base material is laminated | stacked on the back surface of the said metal thin film, the nonflammable sheet excellent in adhesiveness with a base material at the time of construction can be provided.

The cross-section figure of the nonflammable sheet | seat in the 1st Embodiment of this invention is shown. The cross-section figure of the nonflammable sheet | seat which provided the ink layer in the 4th Embodiment of this invention is shown. The cross-section figure of the nonflammable sheet which provided the paper-based base material in the back surface in the 5th Embodiment of this invention is shown.

  Next, the form for implementing this invention is demonstrated.

  As shown in FIG. 1, the incombustible sheet 1 of the present invention is composed of a metal thin film 3 and a paper base material 2. The metal thin film 3 is formed of aluminum, stainless steel, copper, titanium, iron, or the like, and an aluminum foil having a high gas shielding property is particularly preferable. The metal thin film having a thickness of 0.03 to 200 μm can be used. When the thickness is less than 0.03 μm, the strength is lowered and the film is easily broken. On the other hand, when the thickness exceeds 200 μm, problems such as a problem in workability such as inability to cut with a cutter occur.

The thickness of the paper-based substrate 2 is preferably 20 to 100 μm. When the thickness is less than 20 μm, problems such as a decrease in printability and hiding power occur, and when the thickness exceeds 100 μm, the total of 20 minutes in the corn calorimeter test Since the calorific value exceeds 8.0 MJ / m ² , it is not compatible with nonflammable materials.

In addition, the paper base 2 is a Japanese paper, kraft paper, impregnated paper, printing base paper, coated paper for printing, titanium paper, inter-paper reinforced paper, lightweight paperboard, etc. Is mentioned.
Further, as shown in FIG. 2, by providing the ink layer 4 on the surface of the paper-based substrate 2, it is possible to provide a non-combustible sheet having excellent design properties.

  Further, as shown in FIG. 3, by providing a paper-based substrate 5 on the back surface of the metal thin film 3, it is possible to provide a non-combustible sheet that is excellent in adhesion to a base material during construction. Examples of the paper base 5 include Japanese paper, kraft paper, impregnated paper, printing base paper, printing coated paper, titanium paper, inter-paper reinforcing paper, lightweight paperboard and the like.

  Next, examples of the present invention will be described in detail together with comparative examples.

An ethylene-vinyl acetate copolymer adhesive (Sumikaflex 460HQ, manufactured by Sumika Chemtex Co., Ltd.) was applied to the back surface of a coated paper having a thickness of 60 μm and A3 size (420 mm length, 297 mm width), 20 g / m ² . An aluminum foil having a thickness of 6 μm and an A3 size (vertical 420 mm, horizontal 297 mm) was stacked and pressed through a pressing roll to obtain a nonflammable sheet of the present application comprising a laminate of the aluminum foil and coated paper. Further, the coated surface of the incombustible sheet was printed in a single color using a commercial large-sized inkjet printer (PX-F8000, manufactured by Seiko Epson Corporation).

  Further, the non-combustible sheet and the lauan plywood (dimensions: 99 mm long × 99 mm wide × 12 mm thick) after the above inkjet printing process were combined with an ethylene-vinyl acetate copolymer adhesive (Sumikaflex 460HQ, Sumika Chemtex Co., Ltd.) To obtain a cone calorimeter exothermic test specimen. A corn calorimeter exothermic test based on ISO 5660 was performed with a corn calorimeter III (Toyo Seiki Co., Ltd.) using the above test specimen. In addition, the presence or absence of generation of harmful gases was confirmed by a mouse test based on the Building Standards Law.

  Moreover, it was confirmed whether the cutting suitability could be easily cut using a general-purpose cutter knife.

  All the conditions were the same as in Example 1 except that the thickness of the aluminum foil was 0.03 μm.

  All the conditions were the same as in Example 1 except that the thickness of the aluminum foil was 200 μm.

  All the conditions were the same as in Example 1 except that the thickness of the coated paper was 100 μm and the thickness of the aluminum foil was 0.03 μm.

  All the conditions were the same as in Example 4 except that the thickness of the aluminum foil was 200 μm.

  All the conditions were the same as in Example 1 except that the thickness of the coated paper was 50 μm and the thickness of the aluminum foil was 0.03 μm.

  All the conditions were the same as in Example 6 except that the thickness of the aluminum foil was 200 μm.

  The test was performed under the same conditions as in Example 1 except that a printing base paper having a thickness of 20 μm was used. However, a printability test was not performed.

<Comparative Example 1>
It was carried out under the same conditions as in Example 1 except that the thickness of the printing base paper was 15 μm and the thickness of the aluminum foil was 6 μm. However, a printability test was not performed.

<Comparative Example 2>
All the conditions were the same as in Example 1 except that the thickness of the coated paper was 60 μm and the thickness of the aluminum foil was 0.02 μm.

<Comparative Example 3>
All were performed under the same conditions as in Comparative Example 2 except that the thickness of the aluminum foil was 500 μm.

<Comparative Example 4>
All the conditions were the same as in Example 1 except that the thickness of the coated paper was 120 μm.

  These results are shown in Table 1.

ここで、コーンカロリーメーター発熱性試験の合格基準は２０分間の総発熱量が８ＭＪ／ｍ^２以下を合格（○）とする。
有害ガスの発生については、加熱開始後、マウスが行動を停止するまでの平均行動停止時間が６．８分以上の場合には、「なし」とする。
カット加工性は、汎用カッターナイフで切断が容易なら○、困難なら×とする。また、不燃性シートのカット加工工程において、アルミニウム箔の一部に亀裂が入ったものも×とする。
印刷適性は、発色の鮮明さ、にじみの有無により印刷適性を判断した。
評価は、全ての項目において○だった場合を、合格、１項目でも×がついたものを不合格とした。

Here, the acceptance standard of the corn calorimeter exothermic test is that the total calorific value for 20 minutes is 8 MJ / m ² or less as acceptable (O).
Regarding the generation of harmful gas, if the average behavior stop time until the mouse stops the behavior after the start of heating is 6.8 minutes or more, it is set as “none”.
The cut workability is ○ when easy cutting with a general-purpose cutter knife and × when difficult. In addition, in the non-combustible sheet cutting process, a part of the aluminum foil cracked is also marked with x.
The printability was determined based on the vividness of color development and the presence or absence of bleeding.
In the evaluation, a case where all items were “good” was accepted, and a case where even one item was marked “x” was rejected.

As can be seen from Table 1, the incombustible sheet of the present invention having a paper thickness of 20 to 100 μm and a metal thin film thickness of 0.03 to 200 μm even when a plywood which is a combustible wood material is used as a base material. By forming on the surface, the total calorific value passed the incombustibility standard of 8 MJ / m ² or less, and no harmful gas was generated in the mouse test. Moreover, if the thickness of the metal thin film layer was 200 μm or less, it could be easily cut with a general-purpose cutter knife, and if the paper thickness was 20 μm or more, good printability was obtained.

  The non-combustible sheet of the present invention can be used as a non-combustible surface material such as a flooring material, a wall material, a ceiling material, or a partition material of a building that requires non-combustible performance defined by the Building Standard Law.

DESCRIPTION OF SYMBOLS 1 Noncombustible sheet 2 Paper base material 3 Metal thin film 4 Ink layer 5 Paper base material

Claims (5)

  A non-combustible sheet having a combustible paper base material provided on a surface of a metal thin film, wherein the combustible paper base material is a paper base material having a thickness of 20 to 100 μm.   The nonflammable sheet according to claim 1, wherein the metal thin film has a thickness of 0.03 to 200 μm.   3. The non-combustible sheet according to claim 1, wherein the paper base is one selected from the group of Japanese paper, kraft paper, impregnated paper, base paper for printing, coated paper, titanium paper, inter-paper reinforced paper, and lightweight paperboard. .   The incombustible sheet according to claim 1, wherein an ink layer is formed on the surface of the paper base.   The nonflammable sheet according to claim 1, wherein a paper base is laminated on the back surface of the metal thin film.

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