JPH06115018A - Waterproof decorative sheet, its production, and waterproof decorative sheet composite panel - Google Patents

Abstract

PURPOSE:To improve a reliability in such qualities as waterproofness, durability, and decorative pattern uniformity for exterior cladding by a method wherein a waterproof decorative sheet consists of a fibrous sheet member as a substrate, a waterproof layer as an intermediate layer, and a decorative pattern resin layer provided by being transferred as a surface layer. CONSTITUTION:A waterproof decorative sheet for easily and economically giving an exterior cladding material having a special decorative pattern to the world is a waterproof decorative sheet basically consisting of a fibrous sheet member 1 as a substrate, a waterproof layer 2 as an intermediate layer, and a decorative pattern resin layer 3 as a surface layer obtained by being transferred from a transfer sheet, which is provided with a photogravure printing on a film substrate. A waterproof decorative sheet provided with the decorative pattern resin layer 3 having a rock pattern or multi-color stone pattern is particulary preferable. A joint pattern can be further overlapped on the pattern, as required, in a finishing process.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a waterproof decorative sheet, a method for producing the same, and a waterproof decorative sheet composite panel. More specifically, the present invention relates to a sheet-like "sticking" in response to the demand of the dry process era. Regarding "exterior material". In particular, a special makeup pattern that is technically too complex to be provided in practice in conventional building site coating, for example, has a rock-like, stone-like, or special design-like pattern makeup, Alternatively, the present invention relates to a waterproof decorative sheet which is a laminated exterior material sheet having a composite pattern cosmetic property of these various patterns and joint patterns and having sufficient water resistance and durability as an exterior material, and a method for producing the same. Further, it can be widely and usefully used for exterior wall surfaces or for interior wall surfaces around "around water" by being attached to various base precursor panel surfaces such as concrete-based panels, metal-based panels, and wood-based panels. The present invention relates to a waterproof decorative sheet composite panel.

[0002]

2. Description of the Related Art Conventionally, waterproof performance and cosmetics are applied to outer wall surfaces by applying a paint at a construction site.
(Mainly by brush, roll brush, spray gun spraying, etc.), and it is still the same. As a track record of the method of finishing the outer wall surface using a full-scale "exterior sheet for pasting", the present inventors have recently come to the forefront of "waterproof decorative sheet for exterior" (Japanese Patent Laid-Open No. 63-125332). It is not an exaggeration to say that it is finally at the stage of starting it by providing). In the coating method at the construction site, complex makeup finishes such as rock tone colorful patterns are
It is extremely difficult from a technical point of view and from the point of symmetry finishing, and in reality it has not been implemented.

The inventors of the present invention have responded to the demands of the era of dry construction method by applying the current "coating method at a construction site" to waterproof, durability, makeup pattern, etc. About the quality of "Under the strict quality control in the factory"
To make so-called "complete dry method", which is to make "external decorative sheet to be attached", and then to attach it to various panels in the factory to make "composite waterproof decorative panel" and bring it to the construction site for construction. With the aim of promoting the practical use and popularization of construction methods, we have been making every effort to develop a series of them.The advantages of this "complete dry method" are in the following areas, and their effects are extremely Is a big one.

That is, it is as follows. (1) It leads to shortening the construction period. (2) A non-scaffolding method is possible, which is very effective for construction on a narrow site such as building construction in an urban area.
(For example, the construction of a Nopo building with a small gap between adjacent buildings). (3) There are no problems such as pollution due to paint scattering and spray mist scattering due to gun spraying in the field coating, no pollution, and waste of curing work to prevent these problems. be able to. (4) By laminating the waterproof decorative sheet on the panel surface and a part of the edge, a reinforcing effect can be imparted to the panel. It has the effect of preventing cracks and chips in the panel during transportation and after construction. In particular, the reinforcing effect is relatively large in a panel such as an ALC plate or a calcium silicate plate which has a low specific gravity and is susceptible to chipping or cracking of corners, or a panel such as an asbestos slate plate or a gypsum board which is easily cracked. There is.

(5) The exterior finish has higher reliability in terms of quality such as waterproofness, durability, and uniformity of makeup pattern. This is because the waterproof decorative sheet is manufactured and laminated using sufficient machinery and equipment under quality control in the factory. The reliability is obviously high. (6) The exterior of a high-level makeup pattern that cannot be technically achieved by construction site construction can be created. This can be mentioned as the greatest advantage of this method. Very high proportion finish is required for wall coating in the field where there are scaffolds, which mainly requires human hands and can only use simple mechanical equipment, and which is a hindrance in coating and is necessary evil. " It is generally accepted that "Metallic finish" and "Rock-tone multi-pattern finish", which requires a complicated method and requires various equipment, and requires a high degree of uniformity, cannot be done on-site.
Moreover, it is judged that it is a reality.

In order to solve these conventional problems, a waterproof sheet for exterior was proposed in JP-A-2-210147. This is a multi-layered decorative layer formed as a surface layer, but the pattern is metallic or rock-like,
It was formed by spraying a mixed paint such as brick and tile. However, since it is a decorative pattern for exterior use, the difference in color tone occurs even if there is a slight difference in the composition, and a great deal of attention is paid to quality control in the factory, and the yield is not sufficient.

[0007]

The present invention intends to make it possible to easily and economically provide an exterior material having such a high-level special makeup pattern to the world. That is, the waterproof decorative sheet is a makeup obtained by transferring from a fibrous sheet member 1 as a base material, a waterproof layer 2 as an intermediate layer, and a transfer sheet obtained by performing photogravure printing on a film base material as a surface layer. A waterproof decorative sheet based on the pattern resin layer 3 is preferable, and a waterproof decorative sheet in which the decorative pattern resin layer 3 is a rock-like or multi-colored stone pattern is preferable, and a joint pattern may be additionally overlaid on the waterproof decorative sheet in some cases. Is something that can be done.

As a method for producing such a decorative sheet, a roll coater system impregnation method, a doctor blade system impregnation method, or a spray gun spray coating impregnation method is used with a water-based elastic paint arbitrarily colored on one surface side of the fibrous sheet member 1. Of the fibrous sheet member 1 by at least one of the above methods so that the non-impregnated portion 8 of the aqueous elastic coating material remains, and then sufficiently dried to have an arbitrary color tone and a surface By forming the waterproof layer 2 as an intermediate layer which is a smooth surface, a composite sheet in which the fibrous sheet member 1 and the waterproof layer 2 are combined is prepared. After that, on the surface of the waterproof layer 2, at least two or more colors are gravure-printed with a photogravure gravure printing roll by using at least two or more colors of special transfer resin ink on a resin film substrate separately. A transfer sheet is prepared by placing a decorative pattern resin layer consisting of the above on a resin film substrate. Then, the composite sheet and the transfer sheet are overlapped and subjected to a transfer laminator under heat and pressure to form the decorative pattern resin layer 3 on the surface of the waterproof layer 2.

The waterproof decorative sheet thus produced is rotated over the entire surface of the panel or between the surface and the surface to a small edge surface or a part of the small edge surface to be attached and composited to form a waterproof decorative sheet composite panel.

The fibrous sheet member 1 as the base material referred to here is an inorganic fiber such as glass fiber, ceramic fiber (silica-alumina fiber), polyester fiber, acrylic fiber, polyvinyl chloride fiber, vinylon fiber, nylon. CM with one or more kinds of fibers selected from synthetic fibers such as fibers and polypropylene fibers as an essential main component
B, binder resin such as C, Poval, synthetic resin aqueous emulsion, binder fiber such as vinylon type, polyester type, polypropylene type, pulp as a processability improving material or air permeability adjusting material, or rayon staple A sub-constituent material selected from cellulosic fibers, extender pigments such as titanium oxide, calcium carbonate, aluminum hydroxide, etc. may be used in combination, if necessary, in a wet method or carding method represented by a wet papermaking method. It is manufactured by the dry method represented by Mainly refers to a sheet-like material having a thickness of 1 mm or less, which is composed of a fibrous substance and which is obtained in a paper-like or non-woven fabric-like form.

When the above-mentioned raw materials for the fibrous sheet member 1 are selected, glass fibers and polyvinyl chloride fibers are used for products requiring fireproof performance, and polyester fibers are used from the viewpoint of water resistance and durability. Acrylic fibers and polyvinyl chloride fibers are more suitable. As a selection that has a good balance of fireproof performance, water resistance, and durability, for example, a combination of plural kinds of fibers such as glass fiber and polyester fiber, glass fiber and acrylic fiber, glass fiber and polyvinyl chloride fiber is more preferably adopted. To be done. The fibrous sheet is manufactured by either a wet method or a dry method, but when a plurality of types of fibers are used, it is easier to manufacture, the product uniformity is higher, and a more economical manufacturing method is a wet papermaking method. Manufacturing can be mentioned. When the fibrous sheet member 1 is manufactured by the wet papermaking method, in addition to the fibers as an essential main constituent material, an appropriate amount of pulp is used as a sub-constituent material for improving papermaking property and adjusting the air permeability of the sheet product. In many cases.

In the present invention, the fibrous sheet base material is impregnated with the aqueous elastic paint so that both the aqueous elastic paint-impregnated portion 4 and the aqueous elastic paint-unimpregnated portion 8 are present in the fibrous sheet member 1. Must be manufactured. For this purpose, the fibrous sheet member 1 is moderately impregnated with the water-based elastic paint, but it should not be so impregnated that the back side of the sheet member is impregnated. From this point,
More preferable selections for the fibrous sheet member 1 include: sheet basis weight: 35 to 150 g / m ² sheet thickness: 0.08 to 0.30 mm, sheet air permeability: 1.0 second or less (JIS P8117).

The waterproof layer 2 as an intermediate layer is formed of a water-based elastic paint. The term "water-based elastic paint" as used herein refers to a water-based paint prepared using an aqueous emulsion resin having waterproof performance and high stretchability (elasticity). Highly stretchable (elastic) resin generally refers to a soft and highly stretchable resin having a glass transition point (Tg) of -10 ° C or lower.

There are various types of water-based elastic paint resins, and among them, elastic acrylic resins are preferable from the viewpoint of balance of water resistance, durability, bending resistance, crack followability, economical efficiency and the like.
A paint mainly composed of an (acrylic rubber) -based aqueous emulsion is more preferably used. This water-based elastic paint is mainly composed of an elastic acrylic resin-based water-based emulsion resin having a glass transition point of -10 ° C to -60 ° C and inorganic extender pigments such as titanium oxide, calcium carbonate, and aluminum hydroxide.
It is prepared by blending other auxiliary materials appropriately selected from a dispersant, a defoaming agent, a thickener, a wetting agent, and a coloring pigment.

When a pigment such as calcium carbonate powder is added, the PVC (pigment volume concentration) of the water-based elastic paint is usually 25.
It is used in a wide range of up to 50th place and paint viscosity from several hundreds to tens of thousands of centipoise.

The waterproof layer 2 is formed as follows.
First, one surface side of the fibrous sheet member 1 is coated and impregnated with the above-mentioned water-based elastic paint (usually including toning and white) using at least one device of a roll coater, a doctor blade and a spray gun. Let The impregnation is performed so that a part of the fibrous sheet member 1 is left so that the non-impregnated portion 8 of the aqueous elastic paint remains. Therefore, it is necessary that the impregnation of the paint is almost appropriate, and the impregnation of the paint should not lead to the other surface (back surface) of the fibrous sheet member 1. More preferably, the degree of impregnation of the water-based elastic paint into the fibrous sheet member 1 is 75% to 25% in the thickness direction of the water-based elastic paint impregnation part 4, and the water-based elastic paint unimpregnated part 8 is 25% in the thickness direction of the sheet member
It is preferably within 75% of the area. The degree of impregnation depends on the air permeability of the fibrous sheet member, the PVC of the water-based elastic paint
It depends on (pigment volume concentration) and viscosity, the method of adjusting the impregnation operation by the impregnation equipment, etc., and this point is adjusted properly and impregnated, and the coating for sufficiently forming the waterproof layer 2 is performed. And a waterproof layer 2 which is dried with a drying equipment, has a virtually smooth surface, and is optionally colored (including white coloring), and is formed with the fibrous sheet member 1.
Roll up a long composite sheet material that is integrated and integrated.

The decorative pattern resin layer 3 is formed on the surface of the waterproof layer 2 as follows. First, the transfer sheet is prepared. A resin film such as a polyester (PET) film having a thickness of several tens of microns (usually 15 to 40 microns) is used as a base film, and a normal gravure film is formed on the base film surface. Gravure printing of at least two plates is performed by a printing method to obtain a transfer sheet on which a decorative pattern resin layer is placed. Usually, for printing complex patterns such as rock patterns, multiple printing rolls with two or more rolls made by the photogravure printing technique are used, and a special transfer resin with a color tone according to each plate ( printing)
A decorative pattern is printed by performing gravure printing of at least two plates using ink. As the resin-based printing ink used for the present gravure printing, a transfer resin-based ink having characteristics suitable for transfer is used. For example, an acrylic copolymer resin-based resin ink or the like is preferably used.

Next, so that the surface of the composite sheet on the waterproof layer 2 side and the surface of the transfer sheet on which the decorative pattern resin layer is mounted are aligned,
The decorative pattern resin layer 3 is transferred onto the surface of the waterproof layer 2 by transferring the decorative pattern resin layer onto the surface of the waterproof layer 2 by stacking both sheets and applying them to a transfer laminator.
Are placed and formed. Transfer processing with a transfer laminator
Usually, it is carried out under heating at an appropriate temperature and under pressure on an appropriate surface or wire.

Since the waterproof decorative sheet according to the present invention is required to have durability such as weather resistance and light resistance, a transparent top coat layer 9 is usually formed on the surface of the decorative pattern resin layer 3 in combination. As the coating material used for the top coat, acrylic resin-based, fluorine resin-based, acrylic silicone resin-based clear coating materials having excellent weather resistance are more preferably used. As the clear paint, either water-based type or solvent type can be used. 2 depending on the type of paint
Liquid paints are also used.

The coating amount of the weather resistant top coat layer is usually 30 to 100 g / m ² in terms of solid content. Although there are various coating methods, a spray coating method using a spray gun is most suitable as a coating method for forming a top coat layer having a more uniform thickness.

Finally, the waterproof decorative sheet composite panel will be described. Suitable as a panel material is an inorganic material having excellent fire resistance, for example, ALC plate (autoclave curing lightweight foam concrete plate), PC plate (precast concrete plate), GRC (glass fiber reinforced concrete) plate, extrusion Molded cement board, perlite board, pulp cement board, asbestos slate board, gypsum board, etc., or wood board such as particle board, hard board, plywood, aluminum board, stainless board, and metal board such as galvanized steel board can be used. . The waterproof decorative sheet is attached to the entire surface of the panel or even the fore edge surface. Adhesion is made with an adhesive, an adhesive, an adhesive waterproof rubber sheet, or the like. A joint sealing material and a joint molding material are used for the joints to seal between the waterproof decorative sheets that wrap around the fore edge of the panel to prevent rainwater from entering.

[0022]

The major feature of the method of the present invention is that the decorative pattern resin layer 3 is transferred onto the surface of the resin film substrate having a very smooth surface by the gravure printing method, in particular, the gravure printing method using the photogravure printing method. It is formed by transferring from the sheet onto the surface of the waterproof layer 2, and as a result, a complex pattern completely similar to a natural rock-like or stone-like pattern is accurately realized on the surface of the waterproof decorative sheet. is there. Therefore, the appearance pattern of the decorative pattern resin layer 3 is mainly a rock-tone pattern such as a granite color tone, a marble (marble) tone, or a variety of stone tone patterns such as a Zoracoat tone. A special design pattern is also optional as a special case. In addition, the above-mentioned rock-like or stone-like pattern and a composite (overlapping) pattern of vertical and horizontal joint patterns are also adopted as a special case.

A composite panel in which such a waterproof decorative sheet is adhered to, for example, a lightweight foam concrete plate is finished up to the exterior at the same time as wall surface construction. The waterproof effect will be good if the sheet is turned to the small edge and attached.

[0024]

The present invention will be described in more detail with reference to the following examples. 1 to 4 are cross-sectional views of the waterproof decorative sheet. In these figures, [I] First, an example is shown for producing a composite sheet in which the surface of the composite of the fibrous sheet member 1 and the waterproof layer 2 is substantially smooth.

(A) The fibrous sheet member 1 is made of glass fiber 30
Sheet, a polyester-like short fiber (pulp specification) 40 parts, pulp 30 parts manufactured by a wet papermaking method, and a 1 m wide sheet obtained by further applying an appropriate binder impregnation treatment with an aqueous emulsion resin binder solution. The thing of the shape was used. This non-woven sheet has a basis weight of about 65 g / m ² and a thickness of about 0.15
mm, sheet air permeability (JIS P8117) is about 0.20 seconds.

(B) The waterproof paint (water-based elastic paint) used for forming the waterproof layer 2 was as follows. Glass transition temperature (Tg) -45 ℃ using an elastic acrylic resin-based aqueous emulsion resin calcium carbonate powder and titanium oxide powder as extender pigment, a suitable amount of dispersant as an auxiliary additive,
A white paint having a pigment volume concentration of about 35, which had been sufficiently kneaded by adding an antifoaming agent, a thickener and the like, was prepared and used. The viscosity of this paint was about 6,000 CPS. In actual use, the viscosity was further adjusted to about 3,000 CPS and 2,000 CPS before use.

(C) The waterproof layer 2 was formed on the fibrous sheet member 1 by the following a and b2 methods. a. (Case by Roll Coating Method) The above-mentioned waterproof paint of 3,000 CPS was used to coat the fibrous sheet member 1 by passing the fibrous sheet member 1 through a roll coater, and then dried.
The obtained composite sheet is a white surface smooth sheet having a basis weight of about 470 g / m ² and a thickness of about 0.40 m / m, and the thickness of the water-based elastic paint-impregnated portion 4 on the fibrous sheet member 1 of the waterproof layer 2. Is about 50 to 70% of the thickness of the fibrous sheet member, and the remaining unimpregnated portion 8 is about 50 to 30%. This non-impregnated portion is left as a non-impregnated portion of a portion which becomes the impregnated portion 5 of the adhesive on the surface of the patch base material.

B. (Case by Spray Coating Method) Using the water-based elastic paint adjusted to 2,000 CPS, spray coating and drying were performed by an air gun spray coating method to obtain a composite sheet. Traversing two spray guns in two steps (Spray gun traverse:
Spray coating was performed by (about 40 reciprocations / 1 minute). The coating amount was about 400 g / m ² in terms of coating solid content.

The obtained composite sheet is a white sheet having a basis weight of about 465 g / m ² and a thickness of about 0.40 m / m, and the degree of impregnation of the water-based elastic coating material into the fibrous sheet base material is the above roll. It was around 50-70%, almost the same as with the coating method.

[II] Next, an example will be shown for the preparation of the transfer film sheet 7 on which the decorative pattern resin layer 3 is placed.

Polyester 25 μm thick and 100 cm wide
Using the (PET) film as the base film, the 4th plate (4
(Color) gravure printing was performed to produce a transfer film sheet on which a decorative pattern resin layer was placed.

Photographing natural granite (granite) through a gravure printing equipment line that installs a gravure printing roll of 4 plates (4 rolls), which is produced by a conventionally established photogravure printing technique. Edition-4 colors
By performing gravure printing (black, red, yellow, blue),
A transfer film sheet 7 having a reddish-mahogany rock-like decorative resin layer placed thereon was obtained. As the printing ink, a conventional transfer resin-based (printing) ink based on an acrylic copolymer resin was used. The basis weight of the decorative resin layer varies depending on the number of colors and patterns, but is generally 5 to 8 g / m ² (solid content)
It is a degree.

[III] An example of forming the transfer decorative pattern resin layer 3 will be shown. The waterproof sheet 2 side smooth surface of the composite sheet obtained as described in [I] matches the decorative pattern resin layer mounting surface of the transfer sheet obtained as described in [II]. The composite waterproof sheet by pressurizing and heating with a transfer laminator
By transferring the decorative pattern resin layer on the transfer sheet onto the surface of the composite sheet, the transfer decorative pattern resin layer 3 is formed on the surface of the waterproof layer 2 of the composite sheet to develop a red-mahogany tone decorative pattern. A waterproof decorative sheet 6 having the structure shown in FIG. 1 and related to the method of the present invention was obtained.

The waterproof decorative sheet thus obtained had a basis weight of 475 g / m.
^2. Thickness: 0.42 m / m, a sheet with a width of about 1 m, which is a waterproof decorative sheet with a beautiful granite rock pattern. The transfer process using a transfer laminator is usually performed by applying linear pressure between two rolls for lamination and heating the roll surface at about 120 ° C.

[IV] An example of forming a transparent top coat layer is shown in FIG.

A super-weather resistant paint is obtained by spray gun coating on the surface of the waterproof decorative sheet 6 having on the surface the transfer decorative pattern layer 3 of a granite-rock pattern obtained as described in [III]. Acrylic silicon clear paint (solvent-type, 2 liquid-type paint) is sprayed and then 90-10
By drying at 5 ° C., a waterproof decorative sheet 6 having a transparent topcoat layer 9 on the surface and having the structure shown in FIG. 2 was obtained.
The coating amount of the transparent top coat layer was 60 g / m ² in terms of solid content.

This decorative sheet is provided with a transparent top coat layer of an acrylic silicone paint which is a super weather resistant paint,
It has been confirmed to have sufficient durability for exterior applications.

[V] An example of a product in which an adhesive layer and release paper are formed on the back surface of a waterproof decorative sheet having a transparent coat layer is shown in FIG.

The adhesive layer 10 comprises acrylic resin emulsion having a glass transition point of -40 ° C. or lower alone or 100 parts of acrylic resin emulsion and rosin-based tackifier 30.
Part of the mixed solution is applied to the surface of the release paper with a roll coater or the like at a solid content of about 30 g / m ^{2 and} dried, and then laminated on the back surface of the waterproof decorative sheet to form.

An example in which an adhesive waterproof rubber sheet is attached instead of the adhesive layer shown in [VI] and [V] is shown in FIG.

The adhesive rubber sheet 11 is a commercially available adhesive non-vulcanized butyl rubber sheet laminated on the back surface of a waterproof decorative sheet, and a rubber sheet having a thickness of about 1.1 mm is often used. The release paper 12 protects the decorative surface from the adhesiveness of the pressure-sensitive adhesive layer 10 and the pressure-sensitive adhesive rubber sheet 11, and is peeled off and used when it is attached to a panel.

Finally, an example of a composite panel to which the waterproof decorative sheet obtained in the above steps [I] to [IV] is attached will be shown.

[VII] FIGS. 5 to 8 show a concrete panel 1
FIG. 3 is a joint section cross-sectional view of a composite panel in which a waterproof decorative sheet is attached to 3. The composite panel shown in FIG. 5 is an ALC plate (100 × 60
The release paper 12 of the waterproof decorative sheet 6 shown in FIG. 4 is peeled off and adhered to the front face 14 (0 × 3,200 mm). Joint
The backing material 16 was pushed into the back of 15 and the sealing material 17 was packed on top of it to improve waterproofness.

The composite panel of FIG. 6 has a joint portion of the above panel.
This is an example in which a hollow dry joint molding material 18 is used for 15. Figure 7
5 is similar to that of FIG. 5 except that the front face 14 has a two-step joint structure. In Fig. 8, the forehead 14 is a tongue joint,
The concrete panel 13 is a hollow extruded cement board (60
× 450 × 3,000 mm) is a composite panel applied to the joint part 1
Similar to FIG. 5, 5 is a combination of a backup material 16 and a sealing material 17 for complete waterproofing.

[0045]

The waterproof decorative sheet of the present invention is a sheet-like so-called "exterior material to be stuck", and unlike the conventional on-site finishing method of the paint, the waterproof decorative sheet is produced by factory under high quality control. Since it is manufactured, a more uniform sheet-like product is obtained, and on-site construction is also performed by the adhesion construction method on the wall surface.
An excellent waterproof decorative surface can be obtained. In addition, in the case of bringing this waterproof decorative sheet to the construction site as a composite panel obtained by pasting the fireproof panel to the fireproof panel etc. in advance at the construction site, simply apply the makeup and joint finish work to make up the makeup easily. It is possible to finish the exterior waterproof wall surface that has the property.

With respect to the cosmetic properties of the waterproof decorative sheet according to the present invention, the cosmetic property of the waterproof decorative sheet product is improved by improving the rock-like and stone-like decorative patterns more precisely and accurately than ever before. It has been done.

In the case where the waterproof decorative sheet of the present invention is adhered to, for example, a lightweight foam concrete panel as a wall material, the waterproof wall surface is completed at one time, and the work such as spraying the exterior paint can be omitted, which shortens the construction period. Can be achieved.

[Brief description of drawings]

FIG. 1 is an enlarged cross-sectional view of a waterproof decorative sheet.

FIG. 2 is an enlarged cross-sectional view of a waterproof decorative sheet having a transparent top coat layer added to the surface.

FIG. 3 shows an example of a product in which an adhesive layer and a release paper are formed on the back surface.

FIG. 4 shows an example in which an adhesive waterproof rubber sheet is attached instead of the adhesive layer.

FIG. 5 is a joint sectional view of a composite panel.

FIG. 6 is a joint sectional view of a composite panel.

FIG. 7 is a joint section cross-sectional view of a composite panel.

FIG. 8 is a joint sectional view of a composite panel.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Fibrous sheet member 2 Waterproof layer 3 Transfer decorative pattern resin layer 4 Water-based elastic paint impregnated part 5 Adhesive impregnated part 6 Waterproof decorative sheet 7 Transfer film sheet 8 Water-based elastic paint unimpregnated part 9 Transparent top coat layer 10 Adhesive layer 11 Adhesive waterproof rubber sheet 12 Release paper 13 Concrete panel 14 Edge face 15 Joint 16 Backup material 17 Sealant 18 Joint molding material

Claims (5)

[Claims] 1. A fibrous sheet member 1 as a substrate, a waterproof layer 2 as an intermediate layer having a smooth surface, and a transfer sheet obtained by gravure printing on a film substrate as a surface layer. A waterproof decorative sheet based on the decorative pattern resin layer 3 as described above. 2. The decorative pattern resin layer 3 is either a granite-like or marble-like rock-like pattern, a multi-tone stone-like pattern such as Zolacoat, or a special design pattern, or these various patterns and joints. A composite pattern with a pattern.
The waterproof decorative sheet described. 3. The transparent top coat layer 9 made of a resin having excellent weather resistance such as acrylic resin, fluororesin, acrylic silicone resin, etc. is applied on the surface of the decorative pattern resin layer 3. 2. The waterproof decorative sheet described in 2. 4. An aqueous elastic paint is applied to one surface side of the fibrous sheet member 1 as a base material by at least one of a roll coater system impregnation method, a doctor blade system impregnation method and a spray gun spray coating impregnation method. Fibrous sheet member 1
Part of the water-based elastic coating is impregnated so that the uninfiltrated portion 8 remains, and then sufficiently dried to form a waterproof layer 2 as an intermediate layer having a substantially smooth surface, and the fibrous sheet A composite sheet in which the member 1 and the waterproof layer 2 are composited is prepared, and at least two or more printing plates are separately gravure-printed on a resin film substrate by using a gravure printing roll using at least two or more colors of resin ink for special transfer. To prepare a transfer sheet in which a decorative resin layer having at least two colors is placed on a resin film substrate, and then the composite sheet and the transfer sheet are superposed and heated.
The decorative pattern resin layer 3 is formed on the surface of the waterproof layer 2 by transferring and combining the decorative pattern resin layer on the transfer sheet onto the surface of the waterproof layer 2 by applying it to a transfer laminator under pressure. A method for manufacturing a waterproof decorative sheet. 5. A waterproof decorative sheet composite panel comprising the waterproof decorative sheet according to claim 1, which is formed by adhering the entire surface of the panel or the surface and the surface to the edge or a part of the edge, and adhering the composite.