JPS62176830A - Light-transmitting curved-surface decorative body - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to a light-transmitting curved decorative body, and in particular, to a ceiling,
The present invention relates to a light-transmitting curved decorative body having a cylindrical or conical curved surface used for arcades, domes, lighting, etc.

[Conventional technology]

Conventionally, Hikari i! has a multi-layered synthetic resin structure and curved surfaces such as cylindrical and conical shapes. 13IA curved decorative bodies are known. In order to impart strength to these decorative bodies, it is known that a woven or nonwoven fabric made of glass fiber or synthetic fiber is embedded in the surface layer.

[Problem that the invention seeks to solve]

However, in conventional decorative bodies of this type, woven fabric,
Since a reinforcing material such as a non-woven fabric is embedded in the surface layer, the surface layer becomes cloudy and has poor light transmittance, and in many cases, the decorativeness is significantly inferior.

The present invention was made in view of the above-mentioned drawbacks of the prior art, and it is an object of the present invention to provide a transparent curved decorative body having a decorative layer without clouding of the surface layer.

[Means for solving problems]

As a result of intensive research to solve the above problems, the present inventors have found that the cloudiness of the surface layer is due to the difference between the resin that makes up the surface layer and the thread-like or long fiber reinforcing material that makes up textiles and non-woven fabrics. It has been found that the white 4 on the surface layer is particularly noticeable when the above-mentioned T-shaped reinforcing material is embedded in a hard thermosetting synthetic resin.

That is, as a method for manufacturing this type of decorative body, for example, a soft heat-curable synthetic resin liquid is coated on a mold, a mat-like reinforcing material such as a woven fabric is inserted into the resin liquid, and then hardened and made flexible. The flexible layer is then coated with a heat-curable synthetic resin liquid that hardens after curing, and a reinforcing material such as woven fabric is inserted into the resin liquid and then gelled to form a gelled layer. None, but a method has been adopted in which the flexible laminate is then shaped using a shaping mold to form an arbitrary curved surface, and the uncured portions are then cured to obtain a decorative body having a curved surface.
When a flexible laminate is shaped using a shaping mold, the gelled surface layer is deformed into the shape of the shaping mold, and the mat-like reinforcing material is also deformed accordingly. Misalignment occurs between the reinforcing material inside and a space is created in the surface layer at the interface between the resin and the fibers of the reinforcing material. Therefore, when light is transmitted through the decorative body after curing, that part appears cloudy.

In our research, we discovered that this misalignment is caused by the fact that the reinforcing material is formed into filaments or long fibers, and that this problem is caused by the surface layer made of hard thermosetting synthetic resin. It was discovered that a solution to this problem could be achieved without reducing strength by burying a large number of needle-shaped reinforcing materials.

That is, the light-transmitting curved surface decorative body of the present invention is a synthetic resin material formed by shaping a synthetic resin laminate having at least one soft heat-curable synthetic resin layer and at least one hard heat-curable synthetic resin layer to have a curved surface. A light-transmitting curved decorative body having a resin multilayer structure, wherein one surface layer of the decorative body is a soft heat-curable synthetic resin layer, the other surface layer is a hard heat-curable synthetic resin layer, and the above-mentioned soft A material characterized by having a matte reinforcing material embedded in a surface layer made of a heat-curable synthetic resin layer, and a needle-shaped reinforcing material embedded in a surface layer made of a hard heat-curable synthetic resin layer. It is.

Hereinafter, the present invention will be explained in detail with reference to the drawings.

Light-transmitting curved decorative body of the present invention (hereinafter referred to as Sakaeni decorative body)
has a synthetic resin multilayer structure formed by shaping a synthetic resin laminate to have a curved surface, for example, as shown in FIGS. 2 and 3, it has a two-layer structure consisting of two synthetic resin layers. It may have a three-layer structure as shown in FIG. 4, or it may have a laminated structure of four or more layers.

In the figure, 1 is a decorative body, 2 is an internal layer located between the surface layer 3.4, 5.5... is a needle-shaped reinforcing material embedded in a large number inside the surface layer, and 6 is a material inside the surface layer. The embedded mat-like reinforcing material, 7 indicates a partition frame provided on the inner layer 2, and 8 indicates irregularities provided on the surface layer.

The decorative body of the present invention can have any shape with a curved surface. For example, in addition to a cylindrical shape as shown in FIG.
Various shapes are possible, such as a truncated cone shape as shown in FIG. 5 and a semi-cylindrical shape as shown in FIG. Further, although each layer forming the decorative body must be transparent, some of the layers may be made opaque to enhance the decorative effect.

In the present invention, the resin forming each layer of the decorative body includes:
A hard heat-curable synthetic resin and a soft heat-curable synthetic resin are used.

As the above-mentioned hard heat-curable synthetic resin, unsaturated polyester resins, vinyl ester resins, epoxy acrylate resins, epoxy resins, etc., which are hardened after curing, and which are usually used for this type of decorative body can be used.

Further, as the above-mentioned soft heat-curable synthetic resin, unsaturated polyester resin, vinyl ester resin, epoxy acrylate resin, epoxy resin, etc. which have been modified so as to exhibit flexibility without becoming hard after curing can be used. Taking a modified unsaturated polyester resin as an example, its synthesis method is one that is synthesized using adipic acid or the like as a saturated f112 basic acid.

These hard heat-curable synthetic resins and soft heat-curable synthetic resins can be used for each layer forming the decorative body, but at least one surface layer is a hard heat-curable synthetic resin layer, and the other surface layer is a hard heat-curable synthetic resin layer. The surface layer needs to be a soft heat-curable synthetic resin layer.

For example, when the decorative body l shown in FIGS. 2 and 3 has a two-layer structure, one of the surface layers is always made of a hard heat-curable synthetic resin layer, and the other surface layer is made of a soft heat-curable synthetic resin layer. It becomes a layer. In FIG. 2, the surface layer 3 is a hard heat-curable synthetic resin layer, and the surface layer 4 is a soft heat-curable synthetic resin layer, and in FIG. 3, the surface layer 3 is a soft heat-curable synthetic resin layer. It is a resin layer, and the surface layer 4 is a hard heat-curable synthetic resin layer.

In the case of the one shown in FIG. 4, the surface layer 3 is a hard heat-curable synthetic resin layer, the surface layer 4 is a soft heat-curable synthetic resin layer, and the intermediate layer 2 is either soft or hard. is also possible.

The reason why at least one layer made of hard heat-curable synthetic resin is necessary is to maintain the curved state formed by the shaping mold when forming the decoration, and at least one layer made of soft heat-curable synthetic resin. The reason why this is necessary is to maintain strength by incorporating reinforcing materials such as woven fabric.

In the present invention, a large number of acicular reinforcing materials are embedded in the surface layer which is a hard thermally conductive synthetic resin layer, and the surface layer which is a soft thermally conductive synthetic resin layer is embedded in the surface layer. It is necessary to bury mat-like reinforcing material.

The total length of the 11-shaped reinforcing material in the present invention is 1.

0ct11 or less, preferably the total length is Q, lc+n or less,
More preferably, one having a total length of 0.01 cm or less is used. Further, it is preferable that the diameter of the acicular reinforcing material is appropriately selected within the range of 100 μm or less.

If the total length of the needle-shaped reinforcing material exceeds 1.0 cm, there is a risk that the resin and the reinforcing material may be misaligned, warped, or wrinkled when forming a curved surface using a shaping mold, and the fruiting decoration may become cloudy. There is.

The content of the acicular reinforcing material is 5 to 200 parts by weight, preferably 10 to 30 parts by weight, based on 100 parts by weight of the resin forming the surface layer. If the content of the acicular reinforcing material exceeds 200 parts by weight with respect to 100 parts by weight of the resin forming the surface layer, there is a problem that the transparency of the decoration decreases.
Furthermore, if the number of layers is less than 5, the reinforcing effect will be poor.

Further, as the mat-like reinforcing material, those conventionally used for this type of decorative body can be used, and examples thereof include woven fabrics and non-woven fabrics made of glass fiber or synthetic fiber.

As for the material of each reinforcing material, any material that has been conventionally used for this type of decorative body can be used, such as evaporation, glass,
Examples include nylon, vinylon, tetron, etc. In addition to the above-mentioned needle-like reinforcing materials, potassium titanate crystals and the like can be used.

In the present invention, the reason for embedding the mat-like reinforcing material in the surface layer made of the soft heat-curable synthetic resin is that the mat-like reinforcing material is buried in the surface layer made of the soft heat-curable synthetic resin because the soft heat-curable synthetic resin remains flexible even after curing. This is because if the resin layer is impregnated and then cured, it is possible to prevent misalignment between the resin layer and the reinforcing material during shaping with a mold, and as a result, a surface layer without cloudiness can be obtained. Therefore, the resin layer impregnated with the matte reinforcing material needs to be cured before being shaped. In addition, embedding needle-shaped reinforcing materials in the surface layer made of hard heat-curable synthetic resin is a problem with Maputo-shaped reinforcing materials, which causes misalignment between the resin and the reinforcing material without curing, resulting in cloudiness. This is because needle-shaped reinforcing materials do not cause such problems.

In the present invention, in order to enhance the decorativeness of the decorative body, a partition frame 6 having an arbitrary shape such as a design or a picture is formed in the surface layer or the inner layer, as shown in FIGS. 2 to 4, and the partition frame The part surrounded by can be made of a colored transparent resin layer, or a part can be made opaque. At this time, the partition frame 6
The above-mentioned hard resin or soft heat-curable synthetic resin is used to form the resin. Moreover, it is also possible to simply color one or more of the surface layer and the inner layer without forming a partition frame. Furthermore, Japanese paper or the like may be interposed between both surface layers instead of the inner layer. Further, an intermediate layer may be provided between the soft heat-curable synthetic resin and the hard heat-curable synthetic resin.

Furthermore, each surface layer can also be provided with irregularities. For example, as shown in FIG. 4, the unevenness 7.7 can be provided on both surface layers 3.4, or as shown in FIGS. 2 and 3, the unevenness 7 can be provided only on one surface layer. . However, the unevenness does not necessarily need to be provided, and both surface layers may be smooth surfaces.

Further, each layer forming the above-mentioned decorative body may contain a cure accelerator, a catalyst filler, a pigment, a dye, etc., as required.

As a method for manufacturing the decorative body of the present invention constructed as described above, the method for manufacturing the decorative body l shown in FIGS. 1 and 2 will be explained first. A heat-curable synthetic resin liquid is coated on the mold, impregnated with a mat-like reinforcing material of woven fabric, and then hardened to form a flexible skin layer 4. Then, a soft heat-curable synthetic resin liquid is coated on the skin layer 4. After forming the partition frame 6 with a resin liquid, the resin liquid is gelatinized, and further, the part closed by the partition frame 6 is coated with a hard heat-curable synthetic resin liquid that contains a needle-shaped reinforcing material in advance and becomes hard after curing. , and then coated with the coat + AI Fmm back surface 1 using a flexible mold.
Then, the resin liquid is gelled to form a gelled layer, and then this flexible laminate is placed on a shaping mold and shaped, and the uncured portions are cured and removed. Thus, the decorative body 1 can be obtained.

The decorative body of the present invention is used for lighting, ceilings, arcades, domes, etc., and the surface layer does not become cloudy, and it is a light-transmitting decorative body with rich decorative properties.

〔Example〕

Hereinafter, the present invention will be explained in more detail with reference to Examples.

Example 1 A cellophane sheet mold having a thickness of 50 μm is spread and placed on a level flat plate. A soft heat-curable synthetic resin liquid exhibiting flexibility after curing is poured onto this mold, having the following blending ratio (A), and then 450 g/rd of glass mat is impregnated therein.

Blending ratio (A) Flexible modified unsaturated polyester resin 100 parts by weight 6% Cobalt naphthenate 0.5 parts by weight Methyl ethyl ketone peroxide 1 ffiffi part After that,
This soft heat-curable synthetic resin liquid is cured, and a hard heat-curable synthetic resin having the following blending ratio (B) that is cured after curing is drawn on it in a pattern.

Blending ratio (B) Unsaturated polyester resin 100 parts by weight 6% Cobalt naphthenate (cure accelerator) 0.3 parts by weight Henzuisocuba oxide (catalyst) 0.3 parts by weight Next, coat the resin liquid on the mold. The design is constructed by pouring a hard heat-curable synthetic resin liquid that hardens after curing and having the following blending ratio (C) into the unfilled areas.

Blending ratio (C) Unsaturated polyester resin 100 parts Blue (pigment) 0.5 parts by weight 6% Cobalt naphthenate (cure accelerator) 0.3 parts by weight Methyl ethyl ketone peroxide (catalyst) 1 part by weight Next coat The hard heat-curable synthetic resin liquid obtained was gelatinized, and a hard heat-curable synthetic resin liquid having the following formulation (D) which was hardened after curing was poured thereon.

Blending ratio (D) Unsaturated polyester resin 100 parts by weight Potassium titanate crystals (acicular reinforcing material) 50 parts by weight 6% Cobalt naphthenate (cure accelerator) 0.3 parts by weight Methyl ethyl ketone peroxide (catalyst) 1 part by weight Next, the coated resin liquid surface was covered with a cellophane sheet mold with a 50μ thick uneven design, and was heated for 5 minutes at room temperature.
Leave it for about a minute to gel.

Next, the flexible laminate, which had been separated from the flat plate and was sandwiched between cellophane sheet molds, was placed on top of the curved wooden mold that had been prepared and pressed, and pressed to form a wooden mold. Let it happen.

Next, the wooden mold was placed in an oven and after-cured for about 0 hours at 40°C to completely cure the uncured parts.

Next, it was taken out of the oven, removed from the wooden mold, canted to a desired size, and the covered cellophane sheet mold was peeled off to obtain a product. The obtained product had excellent decorative properties with no clouding when light was transmitted through it.

Example 2 A flexible laminate was formed in the same manner as in Example 1, except that the blending ratios (A) to (D) were changed as shown below, and after-cured at 50° C. for about 5 hours.

As with Example 1, the obtained product was free from cloudiness and had excellent decorative properties.

Blending ratio (A) Flexible modified unsaturated polyester resin 100 parts by weight 6% Cobalt naphthenate 0.3 parts by weight Methyl ethyl ketone peroxide 0.8 parts by weight 200 g/
Impregnate a vinylon mat of m.

Mixing ratio ([1) Possible! 82 Modified unsaturated polyester resin 100 parts by weight Aluminum powder 10 parts by weight Titanium white 5 parts by weight Silica filler 5 parts by weight 6% Cobalt naphthenate 0.5 ml 1 part Methyl ethyl ketone peroxide 1 part by weight Blending ratio (C) Unsaturated Polyester resin 100 parts by weight 6% Cobalt naphthenate 0.3 parts by weight Ultramarine
0.5 parts by weight Methyl ethyl ketone peroxide 0.8 ff 11 parts Blending ratio CD) Unsaturated polyester resin 100 parts by weight 6% Cobalt naphthenate 0.5 parts by weight Glass powder 20 parts by weight Methyl ethyl ketone peroxide 0.5 parts by weight Example 3 Spread a cellophane sheet mold with a thickness of 50μ on a level flat plate and ez it. A soft heat-curable synthetic resin liquid exhibiting flexibility after curing is poured onto this mold in the following blending ratio (A), and then 230 g/= of glass mat is impregnated therein.

Blending ratio (8) Flexible modified unsaturated polyester resin 100 parts by weight 6% Cobalt naphthenate 0.5 parts by weight Methyl ethyl ketone peroxide 1 part by weight After that, the surface of this soft heat-curable synthetic resin liquid was sealed with a print film. After curing, the printed portion on the film is transferred to the soft heat-curable synthetic resin layer.

On top of this, a hard heat-curable synthetic resin liquid having the following blending ratio (B) that hardens after curing is poured.

Blending ratio (B) Unsaturated polyester resin 100 parts by weight 6% Cobalt naphthenate 0.6 parts by weight Glass fiber powder 40 parts by weight Methyl ethyl ketone peroxide 1 part by weight Subsequently, in a cellophane sheet mold with a 50μ thick uneven design Cover the surface of the coated resin liquid and leave it for about 5 minutes at room temperature to gel.

Next, the flexible laminate, which has been separated from the flat plate and is sandwiched between cellophane sheet molds, is placed on the curved wooden mold prepared in advance, and pressed to conform to the wooden mold. .

Next, the wooden mold was placed in an oven for after-curing at 50° C. for about 5 hours to completely cure the uncured portions.

Next, it was taken out of the oven, removed from the wooden mold, cut into desired dimensions, and the covered cellophane sheet mold was peeled off to obtain a product. The obtained product had excellent decorative properties with no clouding when light was transmitted through it.

〔Effect of the invention〕

As explained above, the optical 3B transient curved surface decoration of the present invention is
A light-transmitting curved decorative body having a synthetic resin multilayer structure, which is formed by shaping a synthetic resin laminate having at least one soft heat-curable synthetic resin layer and at least one hard heat-curable synthetic resin layer to have a curved surface. One surface layer of the decorative body is a soft heat-curable synthetic resin layer, the other surface layer is a hard heat-curable synthetic 1'-1 resin layer, and from the soft heat-curable synthetic resin layer, A mat-like reinforcing material is embedded in the surface layer made of a hard thermosetting synthetic resin layer, and needle-shaped reinforcing materials are embedded in the surface layer made of a hard thermosetting synthetic resin layer. It is a highly decorative object with excellent light transmittance and no difference in strength compared to conventional products.

[Brief explanation of drawings]

The drawings show an embodiment of the present invention, and FIG. 1 is a perspective view showing an embodiment of the decorative body of the present invention, FIG. 2 is a longitudinal sectional view taken along line nn in FIG. 1, and FIG. FIG. 4 is a longitudinal sectional view showing another embodiment of the present invention, and FIG. 5 is a longitudinal sectional view showing another embodiment of the present invention. FIG. 6 is a perspective view showing still another embodiment of the present invention. 1...Light-transparent curved decorative body 3.4...Surface layer 5...Reinforcement material Fig. 2

Claims (1)

[Claims] In a light-transmitting curved surface decorative body having a synthetic resin multilayer structure, which is formed by shaping a synthetic resin laminate having at least one soft heat-curable synthetic resin layer and at least one hard heat-curable synthetic resin layer to have a curved surface. , one surface layer of the decorative body is a soft heat-curable synthetic resin layer, the other surface layer is a hard heat-curable synthetic resin layer, and the surface layer consisting of the soft heat-curable synthetic resin layer has a matte layer. 1. A light-transmitting curved decorative body, characterized in that a needle-shaped reinforcing material is embedded therein, and a needle-shaped reinforcing material is embedded in a surface layer made of a hard thermosetting synthetic resin layer.