JP2019084808A - Incombustible decorative sheet and method for producing the same - Google Patents

Abstract

To provide an incombustible decorative sheet combining such incombustibility with design ability as to be usable as an interior finishing material of a special building.SOLUTION: The incombustible decorative sheet comprises: a base material layer 1 having glass fiber fabric and a thermoplastic resin; and at least adhesive layers 2A and 2B, printing layers 3A and 3B, transparent resin layers 4A and 4B, and top coat layers 5A and 5B which are laminated in this order on each of one surface 1a and the other surface 1b of the base material layer 1. A content of the thermoplastic resin relative to 100 pts.mass of the glass fiber fabric is more than 50 pts.mass and 300 pts.mass or less, each of the transparent resin layers 4A and 4B includes vinyl chloride resin, and basis weights of the transparent resin layers 4A and 4B are 10 g/mor more and less than 100 g/m.SELECTED DRAWING: Figure 1

Description

  The present invention relates to a noncombustible decorative sheet and a method of manufacturing the same.

Conventionally, a decorative sheet (decorative synthetic resin sheet) having a Japanese-style, emotionally rich Japanese paper design has been used as a decorative sheet for partitions of non-residential buildings such as hotels and restaurants.
As an example of such a decorative sheet, one obtained by printing a decorative pattern on a translucent synthetic resin to which a pigment is added and one obtained by sticking and integrating a translucent synthetic resin film on both sides of Japanese paper (See, for example, Patent Document 1).

Japanese Patent Application Publication No. 2003-25514

However, according to Article 35-2 of the Building Standard Law, the interior of special buildings (mainly public facilities) use of noncombustible materials to finish the part facing the wall and the ceiling depending on the scale and the type of building, etc. In the case of decorative sheets that are permanently installed on the wall, it is necessary to obtain fireproof certification.
That is, since the decorative sheet as disclosed in Patent Document 1 is not a specification that can obtain non-combustible recognition, it is not suitable as a decorative sheet permanently installed on the wall surface of a special building.

  The present invention has been made in view of the above circumstances, and it is an object of the present invention to provide a non-combustible decorative sheet having non-combustibility and design that can be used as an interior material of a special-type building and a method for producing the same. To aim.

In order to solve the above-mentioned subject, the fireproof decorative sheet which is one mode of the present invention is a substrate layer which has textiles of glass fiber, and thermoplastic type resin,
An adhesive layer, a transparent resin layer, and a top coat layer are laminated in this order on one surface and the other surface of the base material layer,
A print layer is provided between the adhesive layer and the transparent resin layer on at least one of the one surface and the other surface of the base material layer,
The content of the thermoplastic resin is more than 50 parts by mass with respect to 100 parts by mass of the glass fiber fabric,
The transparent resin layer contains a vinyl chloride resin,
The basis weight of the transparent resin layer is 10 g / m ² or more and less than 100 g / m ² .

Moreover, in order to solve the said subject, the manufacturing method of the nonflammable decorative sheet which is 1 aspect of this invention is more than 50 mass parts more than 300 mass parts of content of a thermoplastic resin with respect to 100 mass parts of glass fiber textiles. A substrate layer forming step of producing a substrate layer by volatilizing a solvent after impregnating a glass fiber woven fabric with a thermoplastic resin as follows:
An adhesive layer, a printing layer, and / or only an adhesive layer, and a vinyl chloride resin are contained on each of one surface and the other surface of the base layer, and the basis weight is 10 g / m ² or more and 100 g / m ² And a laminating step of laminating a transparent resin layer, which is less than the above, in this order.

  According to one aspect of the present invention, it is possible to provide a non-combustible decorative sheet having non-combustibility and design that can be used as an interior material for a special-type building, and a method for producing the same.

BRIEF DESCRIPTION OF THE DRAWINGS It is sectional drawing showing the structure of the nonflammable decorative sheet of one Embodiment of this invention.

Hereinafter, an embodiment of the present invention will be described with reference to the drawings.
Here, in the following description of the drawings, the same or similar parts are given the same or similar reference numerals. However, it should be noted that the drawings are schematic, and the relationship between the thickness and the planar dimension, the ratio of the thickness of each layer, etc. may be different from the actual one. Therefore, specific thicknesses and dimensions should be determined in consideration of the following description. Moreover, it is a matter of course that parts having different dimensional relationships and ratios among the drawings are included. In the following description, "parts by mass" may be referred to as "parts".
Further, the embodiments shown below exemplify the configuration for embodying the technical idea of the present invention, and the technical idea of the present invention includes materials, shapes, structures, etc. of components below. It is not something specific. The technical idea of the present invention can be variously modified within the technical scope defined by the claims described in the claims.

(Constitution)
As shown in FIG. 1, the noncombustible decorative sheet of the present embodiment is a topcoat layer 5A, a transparent resin layer 4A, a printing layer 3A, an adhesive layer 2A, a base material layer 1, an adhesive layer 2B, a printing layer 3B, a transparent resin The layer 4B and the top coat layer 5B are laminated at least in this order. That is, in the non-combustible decorative sheet of the present embodiment, at least the adhesive layer 2, the printing layer 3, the transparent resin layer 4, and the top coat layer 5 are formed on one surface 1 a and the other surface 1 b of the base material layer 1 respectively. It is laminated in this order.

  Here, as another aspect of the nonflammable decorative sheet of the present invention, the printing layer 3 may be provided only on one surface 1a side of the base material layer 1 or on the other surface 1b side. That is, as a configuration of the noncombustible decorative sheet according to another embodiment, at least the adhesive layer 2, the print layer 3, the transparent resin layer 4 and the top coat layer 5 are laminated in this order on one surface 1a side of the base material layer 1 And an embodiment in which the adhesive layer 2, the transparent resin layer 4, and the top coat layer 5 are laminated at least in this order on the other surface 1b side. Moreover, as a structure of the noncombustible decorative sheet of other embodiment, the contact bonding layer 2, the transparent resin layer 4, and the topcoat layer 5 are laminated | stacked at least in this order at the one surface 1a side of the base material layer 1, The aspect in which the adhesive layer 2, the printing layer 3, the transparent resin layer 4, and the top coat layer 5 are laminated at least in this order is included on the surface 1 b side.

In addition, another layer may be provided between each layer in the range which does not impair the effect of the present invention.
Moreover, it is preferable that the thickness of the nonflammable decorative sheet of this embodiment is 0.021 +/- 0.004 (mm) or more and 0.29 +/- 0.03 (mm) or less. Further, non-combustible decorative sheet of the mass of this embodiment, for example, it is preferable ^{23 ± 2.3 (g / m 2} ) or more ^{314 ± 30.2 (g / m 2} ) or less.

In the following description, with reference to the base material layer 1, one side 1a may be referred to as the "front side", and the other side 1b as the opposite side may be referred to as the "back side". is there. In addition, except for the case where the front side and the back side are particularly distinguished, the top coat layers 5A, 5B, the transparent resin layers 4A, 4B, the print layers 3A, 3B (printed layers on both sides of the base layer 1 When the adhesive layers 2A and 2B are provided, they may be referred to as a top coat layer 5, a transparent resin layer 4, a printing layer 3 and an adhesive layer 2, respectively.
The noncombustible decorative sheet of this embodiment is a noncombustible sheet excellent in any of transparency, noncombustibility, and long-term stability by having such composition.

<Base layer>
The base layer 1 is a sheet-like layer in which a glass fiber woven fabric is impregnated with a thermoplastic resin (hereinafter sometimes referred to as a base layer-containing resin).
In the base material layer 1, the content (content) of the thermoplastic resin is more than 50 parts by mass with respect to 100 parts by mass of the glass fiber fabric. The upper limit of the content (content) of the thermoplastic resin relative to 100 parts by mass of the glass fiber fabric in the base layer 1 is appropriately determined according to the function of the base layer 1 and the use of the nonflammable decorative sheet of the present embodiment. However, for example, 300 parts by mass is preferable, and 200 parts by mass is more preferable.
Moreover, it is preferable that the thickness of the base material layer 1 is 0.021 mm or more and 0.05 mm or less.

[Glass fiber fabric]
The surface of the glass fiber woven fabric is surface-treated with a silane coupling agent or the like. In addition, examples of the woven structure of the glass fiber woven fabric include plain weave, satin weave, twill weave, chute weave, twill weave, and among these, highly versatile plain weave is preferable. Moreover, 10 g / m ² or more and 60 g / m ² or less are preferable, and 20 g / m ² or more and 55 g / m ² or less of the above-mentioned glass fiber woven fabric are more preferable. Moreover, it is preferable that the thickness of the said glass fiber fabric exists in the range of 0.02 mm or more and 0.05 mm or less.
As said glass fiber fabric, requirements (a specification, conditions) like any one of the following (a)-(c) are mentioned, for example.

(A)
・ Thickness (mm): 0.021 ± 0.004
Mass (g / m ² ): 23.0 ± 2.3 (organic mass (g / m ² ): 0.0368 ± 0.00368)
・ Weaving method: Plain weave, yarn count: Vertical 4.2tex × horizontal 4.2tex
・ Weave density: Vertical 69 ± 2/25 mm × Horizontal 72 ± 2/25 mm
Composition (mass%):
E glass: 99.86 ± 0.03
Surface treatment agent (converging agent, silane compound): 0.14 ± 0.03

(B)
・ Thickness (mm): 0.043 ± 0.005
Mass (g / m ² ): 48.5 ± 4.85 (organic mass (g / m ² ): 0.0534 ± 0.00534)
・ Weaving method: Plain weave, yarn count: Vertical 11.2tex × horizontal 11.2tex
・ Weave density: Vertical 53 ± 2/25 mm × Horizontal 54 ± 2/25 mm
Composition (mass%):
E glass: 99.89 ± 0.03
-Surface treatment agent (converging agent, silane compound): 0.11 ± 0.03

(C)
・ Thickness (mm): 0.05 ± 0.005
Mass (g / m ² ): 54.0 ± 5.4 (organic mass (g / m ² ): 0.0594 ± 0.00594)
・ Weaving method: Plain weave, yarn count: Vertical 11.2tex × horizontal 11.2tex
・ Weave density: Vertical 60 ± 2/25 mm × horizontal 60 ± 2/25 mm
Composition (mass%):
E glass: 99.89 ± 0.04
Surface treatment agent (converging agent, silane compound): 0.11 ± 0.04

[Thermoplastic resin]
The thermoplastic resin is integrated with the glass fiber fabric, and specifically, after being impregnated into the glass fiber fabric, heat is applied to volatilize the solvent to integrate the components. The base material layer 1 which comprises a transparent noncombustible decorative sheet can be obtained.
It is preferable to select the thing which becomes a numerical value close | similar to the refractive index of the said glass fiber fabric integrated as a main monomer mix | blended with the said thermoplastic resin composition. For example, when the refractive index of the glass fiber fabric is around 1.56, in order to maintain transparency, it is preferable that the refractive index of the thermoplastic resin be a value close to 1.56. In addition, the above-mentioned thermoplastic resin composition may further contain additives such as a flame retardant, an ultraviolet absorber, and an antistatic agent, if necessary. As the above-mentioned flame retardant, aluminum hydroxide, magnesium hydroxide, trichloroethyl phosphate, triallyl phosphate, ammonium polyphosphate, phosphate ester and the like can be used.

The resin amount (content) of the thermoplastic resin composition is more than 50 parts by mass and 300 parts by mass with respect to 100 parts by mass of the glass fiber fabric so that the non-combustible decorative sheet of the present embodiment has excellent transparency. The amount is preferably not more than 70 parts by mass and not more than 300 parts by mass. Further, in order to have excellent non-combustibility, it is preferable that the amount is 110 g or less per 1 m ² of the non-combustible decorative sheet. If the resin content of the thermoplastic resin composition is less than 70 parts by mass, the transparency of the resulting noncombustible decorative sheet may be reduced, and if it is more than 110 g per 1 m ² of the noncombustible decorative sheet The non-combustibility of the non-combustible decorative sheet obtained may be reduced.

Here, by setting the resin amount (content) of the thermoplastic resin composition to 75% or more by mass ratio to the glass fiber fabric, good transparency and visibility in the base material layer 1 are imparted. It is preferable that the total light transmittance in the base material layer 1 is about 90%.
As the thermoplastic resin composition, for example, the following requirements may be mentioned.
Mass (g / m ² ): 108.0 ± 10.8 or less (organic mass (g / m ² ): 108.0 ± 10.8 or less)
Composition (mass%):
Polyester resin: 80 ± 2.0 to 100
Flame retardant: 0 to 20 ± 2.0

<Printed layer and adhesive layer>
The print layer 3 (3A, 3B) is provided on each of the front surface 1a and the back surface 1b of the base material layer 1 via the adhesive layer 2 (2A, 2B). As described above, the printing layer 3 may be provided only on one of the transparent resin layer 4 and the adhesive layer 2 on the front surface 1 a side and the back surface 1 b side of the base material layer 1. Of the both sides of the printing layer 3 (3A, 3B), the side facing the adhesive layer 2 (2A, 2B) (the side opposite to the side facing the transparent resin layer 4) is made of Japanese paper with printing ink The surface functions as a printing surface.
The printing ink may be a synthetic resin ink such as a vinyl resin ink or an acrylic resin ink, and the type of the ink is not particularly limited as long as the effects of the present invention are not impaired.
As a material which comprises adhesion layer 2 (2A, 2B), in order to raise lamination intensity, it is preferred to apply a heat seal agent. Moreover, the order of the thickness direction of the heat-sealing agent (adhesive layer) 2 and the printing layer 3 may be replaced.

[Synthetic resin ink]
Examples of the synthetic resin ink include, for example, any of the following (a) to (c). When the proportion of the resin as the main component exceeds 47.1%, it is preferable to set the resin of the main component to 3.3 g / m ² or less.

(A) Vinyl resin-based ink Mass (g / m ² ): 7.0 ± 0.7 or less (solid amount) (organic mass (g / m ² ): 7.0 ± 0.7 or less)
Composition (mass%):
・ Vinyl resin: 23.3 ± 2.3 to 83.3 ± 8.3
Organic pigment: 0 to 50 ± 5.0
・ Inorganic pigment: 0 to 76.7 ± 7.6

(B) Acrylic resin-based ink Mass (g / m ² ): 7.0 ± 0.7 or less (solid amount) (organic mass (g / m ² ): 7.0 ± 0.7 or less)
Composition (mass%):
Acrylic resin: 42.9 ± 4.2 to 81.5 ± 8.1
Organic pigments: 0 to 45 ± 4.5
Organic additives: 0 to 30 ± 3.0
・ Inorganic pigment: 0 to 45 ± 4.5

(C) Acrylic resin-based ink Mass (g / m ² ): 6.0 ± 0.6 or less (solid amount) (organic mass (g / m ² ): 6.0 ± 0.6 or less)
Composition (mass%):
Acrylic resin: 42.0 ± 4.2 to 70 ± 7.0
Organic pigments: 0 to 33.3 ± 3.3
・ Vinyl chloride-vinyl acetate resin: 18 ± 1.8 to 30 ± 3.0
・ Inorganic pigment: 0 to 40 ± 4.0

The above-mentioned synthetic resin ink may, for example, replace the arrangement of layers with the following required “acrylic resin-based binder”.
Mass (g / m ² ): 3.0 ± 0.3 or less (solid amount) (organic mass (g / m ² ): 3.0 ± 0.3 or less)
Composition (mass%):
・ Vinyl chloride-vinyl acetate resin: 8.48 ± 0.8-88.24 ± 8.8
Acrylic resin: 5.88 ± 0.5 to 45.76 ± 4.5
Polyester resin: 5.88 ± 0.5 to 45.76 ± 4.5

<Transparent resin layer>
The thermoplastic resin composition constituting the transparent resin layer 4 is not particularly limited as long as the effects of the present invention are not impaired, and various films can be used, but a vinyl chloride resin is contained from the viewpoint of nonflammability Is preferred. In addition, the thermoplastic resin (composition) which comprises the transparent resin layer 4 may be called transparent resin layer structure resin (composition) in this specification.
The basis weight of the thermoplastic resin composition that constitutes the transparent resin layer 4 is preferably less than 10 g / ^{m 2} or more 100 g / ^{m 2,} and more preferably 10 g / ^{m 2} or more 70 g / ^{m 2} or less.
The thickness of the transparent resin layer 4 is preferably 0.01 mm or more and 0.05 mm or less, and more preferably 0.045 mm or less.
Here, in the present embodiment, a state in which the adhesive layer 2, the printed layer 3 printed with Japanese paper pattern, and the transparent resin layer 4 are laminated in this order on the front surface 1a and the back surface 1b of the base material layer 1. Also in the above, it is preferable that the total light transmittance exceeds 75%.

[Vinyl chloride resin]
As the vinyl chloride resin, for example, the following requirements may be mentioned.
Thickness (mm): 0.045 ± 0.005 or less Mass (g / m ² ): 56.0 ± 5.0 or less (organic mass (g / m ² ): 55.9 ± 5.5 or less )
Composition (mass%):
-Vinyl chloride resin: 85.4 ± 1.452
Acrylic resin: 0.2 ± 0.02
・ Plasticizer (DINCH, epoxidized soybean oil etc.): 7.74 ± 0.77
Organic additives (ultraviolet absorbers, etc.): 2.32 ± 0.23
Organic stabilizers (Ba-Zn etc.): 4.32 ± 0.43
・ Inorganic additives (ultramarine blue): 0.02 ± 0.002

Moreover, the following required acrylic resin paints may be contained in the said vinyl chloride resin, for example.
Mass (g / m ² ): 10 ± 1.0 or less (solid amount) (organic mass (g / m ² ): 10 ± 1.0 or less)
Composition (mass%):
Acrylic resin: 73.4 ± 7.3-88.9 ± 8.8
Organic additives: 9.64 ± 0.96 to 13.7 ± 1.3
・ Inorganic additives (silica etc.): 0 to 16.8 ± 1.6

[Top coat layer]
The top coat layer (surface protective layer) 1 is provided to impart surface physical properties such as weather resistance and stain resistance required of the noncombustible decorative sheet.
The top coat layer 5 (5A, 5B) is formed along the shape of the front surface (surface opposite to the surface facing the print layer 3) of the transparent resin layer 4. The shape of the front surface of the top coat layer 5 is preferably smooth, for example, but an embossed shape may be adopted as needed. By forming the top coat layer 5 (5A, 5B), the weather resistance and the stain resistance can be improved.
The resin for forming the top coat layer 5 is preferably a curable resin such as a thermosetting resin or an ionizing radiation curable resin. In addition, an additive of a weathering agent or a matting agent may be added to the top coat layer 5 (5A, 5B) as required. By adding a matting agent, it is also possible to make a noncombustible decorative sheet closer to the texture of Japanese paper.

  As explained above, the non-combustible decorative sheet of the present embodiment is non-combustible and transparent non-combustible by having the base material layer 1 in which the glass fiber woven fabric is impregnated with the thermoplastic resin having a similar refractive index. Sex decorative sheet can be provided. Furthermore, by providing a print layer on the front side and the back side of the base material layer 1, a design such as a pattern of Japanese paper can be imparted, so a non-combustible decoration that can be used as an interior material of a special building A sheet can be provided.

<Method for producing noncombustible decorative sheet>
The method for producing the noncombustible decorative sheet of the present embodiment is not particularly limited as long as it is a method for producing the noncombustible decorative sheet satisfying the above configuration.
In the method for producing the nonflammable decorative sheet of the present embodiment, after the content of the thermoplastic resin is more than 50 parts by mass with respect to 100 parts by mass of the glass fiber woven fabric, the glass fiber woven fabric is impregnated with the thermoplastic resin, Base layer preparation step of evaporating base material layer 1 by volatilizing, adhesive layer 2, printing layer 3, vinyl chloride resin on front side 1a and back side 1b of base material layer 1, and having a basis weight And a laminating step of laminating the transparent resin layer 4 of less than 100 g / m ² in this order. In the laminating step, the printing layer 3 may be provided only on either of the adhesive layer 2 on the front surface 1 a side and the back surface 1 b side of the base material layer 1 and the transparent resin layer 4. .

Here, in the base material layer 1 producing step, it is preferable to produce the base material layer 1 such that the total light transmittance of the base material layer 1 is 90% or more (preferably about 90%).
Further, in the step of laminating the adhesive layer 2, the print layer 3 and the transparent resin layer 4 in this order on the front surface 1a and the back surface 1b of the base material layer 1, all of the laminate composed of these layers It is preferable to apply while adjusting so that the light transmittance exceeds 75%.
Moreover, it is preferable that the basic weight of the glass fiber fabric contained in the base material layer 1 is 20 g / m < ² > or more.

  Hereinafter, the present invention will be specifically described by showing Examples and Comparative Examples. However, the present invention is not limited to the following examples.

Example 1
As a glass fiber fabric, "1280 NS" (thickness 0.05 mm, basis weight 54.0 g / m ² ) manufactured by Arisawa Co., Ltd. is used, and a thermoplastic resin is used in an amount of 200 parts by weight based on 100 parts by weight of the glass fiber fabric. It was impregnated by mass and dried in an oven to prepare a transparent substrate layer.
Next, a vinyl chloride resin film (transparent resin layer, thickness 0.045 mm) in which a print layer and a heat seal (adhesive layer) are laminated in this order on one side and a top coat layer is laminated on the other side. And a basis weight of 56 g / m ² ) were prepared as a laminate.
Next, the above adhesive layer is made to face each of the front and back surfaces of the produced base layer, and the three layers are integrated by thermal lamination to obtain a transparent non-combustible decorative sheet. The

(Example 2)
A transparent non-combustible decorative sheet was obtained in the same manner as in Example 1 except that “0292 NS” (0.02 mm in thickness, 23 g / m ^{2 in} basis weight) manufactured by Arisawa Co., Ltd. was used as the glass fiber fabric. .

(Comparative example 1)
A transparent nonflammable decorative sheet was obtained in the same manner as in Example 1 except that the transparent resin layer was changed to an acrylic resin film (thickness 0.05 mm, basis weight 57 g / m ² ).
(Comparative example 2)
A transparent noncombustible decorative sheet was obtained in the same manner as in Example 1 except that the resin amount of the thermoplastic resin was 50 parts by mass with respect to 100 parts by mass of the glass fiber fabric.
(Comparative example 3)
The glass fiber woven fabric "0292NS", the transparent resin layer, a thickness of 0.08 mm, except that the basis weight of 100 g / ^{m 2} was obtained a transparent non-flammable decorative sheet in the same manner as in Example 1.

(Evaluation)
The following performance evaluation was performed with respect to the nonflammable decorative sheet of Examples 1 and 2 and Comparative Examples 1 to 3 obtained as described above. The evaluation results are shown in Table 1.

<Designability>
When the non-combustible sheets of Examples 1 and 2 and Comparative Examples 1 to 3 are viewed with the naked eye, those which can not recognize the weave of the glass fiber fabric are evaluated as "good" and those which can see the weave are "defective". Evaluated as.

<Non-combustible>
The noncombustible sheets of Examples 1 and 2 and Comparative Examples 1 to 3 were evaluated by a heat generation test based on the corn calorimeter method defined in ISO 5660-1. That is, in the heat generation test which radiates 50 KW / m ² of radiant heat to the surface of the non-combustible sheet of Examples 1 and 2 and Comparative Examples 1 to 3 by a radiant electric heater, all the following conditions (1) to (3) The time of filling was regarded as “pass”, and the time of not satisfying at least one of the following conditions (1) to (3) was regarded as “fail”.

(1) The total calorific value for 20 minutes after the start of heating is 8 MJ / m ² or less.
(2) The maximum heating rate does not exceed 200 KW / m ² continuously for 10 seconds or more for 20 minutes after the start of heating.
(3) Even after the above-mentioned heat generation test, the intervals between the warps and the intervals between the wefts in the glass fiber fabric are both 0.5 mm or less.

<Total ray transmittance>
About the nonflammable sheet of Examples 1 and 2 and Comparative Examples 1 to 3, the total light transmittance defined in JIS K-7105 was evaluated. As for the evaluation of the total light transmittance, 75% or more is preferable for the non-combustible sheets of Examples 1 and 2 and Comparative Examples 1 to 3.

<Evaluation result>
As can be seen from Table 1, the noncombustible decorative sheets of Examples 1 and 2 both had high designability, cleared nonflammability, and were also excellent in total light transmittance. Among them, Example 1 in which the basis weight of the glass fiber fabric is large was particularly excellent in the total light transmittance.
On the other hand, since the acrylic resin diameter film was adopted as the transparent resin layer, the non-combustible decorative sheet of Comparative Example 1 could not clear the non-combustibility. Moreover, since the resin content (content) of the thermoplastic resin was small, the nonflammable decorative sheet of Comparative Example 2 was inferior in the designability and the total light transmittance. Moreover, since the incombustible decorative sheet of the comparative example 3 has a large basis weight of the thermoplastic resin composition which comprises a transparent resin layer, it was not able to clear incombustibility.
That is, it is understood that the noncombustible decorative sheets of Examples 1 and 2 which are the scope of the present invention have both noncombustibility and designability which can be used as an interior material of a special-type building.

1 base material layer 2 adhesive layer 3 printing layer 4 transparent resin layer 5 top coat layer

Claims (5)

A substrate layer having a glass fiber fabric and a thermoplastic resin,
An adhesive layer, a transparent resin layer, and a top coat layer are laminated at least in this order on one surface and the other surface of the substrate layer, respectively.
A print layer is provided between the adhesive layer and the transparent resin layer on at least one of the one surface and the other surface of the base material layer,
The content of the thermoplastic resin relative to 100 parts by mass of the glass fiber fabric is more than 50 parts by mass and 300 parts by mass or less,
The transparent resin layer contains a vinyl chloride resin,
The incombustible decorative sheet characterized in that the basis weight of the transparent resin layer is 10 g / m ² or more and less than 100 g / m ² . The non-combustible decorative sheet according to claim 1, wherein the basis weight of the glass fiber woven fabric is 10 g / m ² or more and 60 g / m ² or less. After impregnating the glass fiber fabric with the thermoplastic resin in such a manner that the content of the thermoplastic resin is 50 parts by mass or more and 300 parts by mass or less with respect to 100 parts by mass of the glass fiber fabric, the solvent is volatilized to prepare a substrate layer. A base layer forming step;
An adhesive layer, a printing layer, and / or only an adhesive layer, and a vinyl chloride resin are contained on each of one surface and the other surface of the substrate layer, and the basis weight is 10 g / m ² or more and 100 g / m ² And a laminating step of laminating a transparent resin layer, which is less than the total thickness, in this order.   The method for producing a noncombustible decorative sheet according to claim 3, wherein in the base material layer forming step, the base material layer is produced such that the total light transmittance of the base material layer is 90% or more.   5. The method according to claim 3, wherein in the laminating step, lamination is performed such that the total light transmittance of the laminate formed of the base material layer, the adhesive layer, the printing layer, and the transparent resin layer exceeds 75%. Of non-combustible decorative sheet.

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