JP3067283B2 - Patterned molded body with a laminated structure - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a patterned molded article having a laminated structure used as a material for bathtubs, counters, kitchen counters and the like.

[0002]

2. Description of the Related Art Conventionally, fiber-reinforced plastics using an unsaturated polyester resin and glass fibers have been used for bathtubs, ships, tanks, etc., because of their light weight and high mechanical strength.
These are generally composed of a single color gel coat layer and a fiber reinforced plastic layer, and are manufactured by a hand lay-up method or a spray-up method. For the purpose of further improving the appearance, an FRP molded product treated with titanium oxide (Japanese Patent Application Laid-Open No. 55-81149) has been devised.

On the other hand, laminated molded articles having a resin concrete layer are widely used as artificial marble having a transparent feeling. The resin concrete layer is formed by adding about twice the amount of a filler, an aggregate such as glass frit or aluminum hydroxide having a refractive index, and a toner to a resin.

[0004]

However, these are basically not thick and therefore cannot be said to be deep designs.

[0005] The present invention uses a resin concrete layer to embody a completely new design that is different from the conventional transparent feeling, enhances the added value, and forms a patterned molded product having a deeper new patterned laminated structure. It is intended to be realized.

In order to solve the above-mentioned problems, a patterned molded article having a laminated structure according to the present invention is provided with a transparent gel coat layer sequentially from the surface, and a colored layer formed by pouring and curing.
It has a laminated structure in which a resin concrete layer to which a fibrous filler is added and a fiber reinforced plastic layer to be a back surface reinforcing layer are laminated . In addition, resin concrete
Composition with colored fibrous filler and fine mica powder added to the layer
I have.

[0007]

The colored fibrous filler added to the resin concrete layer through the transparent gel coat layer can be visually observed as a pattern. This also serves to color the resin concrete layer. Compared to the case where the toner is uniformly colored by a conventional toner or the like, a three-dimensional depth is exhibited. This is not merely a sense of transparency but gives a completely new design, and when a colored fibrous filler and fine mica powder are added to the resin concrete layer, it becomes metallic and deep. Become.

[0008]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of the present invention will be described below with reference to FIGS. In the figure, the structure is such that a transparent gel coat layer 1, a resin concrete layer 2, and a back reinforcing layer 3 made of fiber reinforced plastic are sequentially laminated from the surface. The resin fibrous filler 4 is mixed in the resin concrete layer 2. Further, as shown in FIG. 2, the colored fibrous filler 4 'and the fine mica powder 5' may be mixed in the resin concrete layer. The colored fibrous filler is a fibrous material such as rayon fiber or polyester fiber cut into a certain length and colored with a dye or pigment to an arbitrary color so as not to dissolve in organic solvents (styrene, etc.). is there. As the colored fibrous filler, one having an average fiber length of 0.1 mm or more and 10 mm or less is selected.
The reason is that if it is not more than 0.1 mm, it will not be seen as a pattern in design, and if it exceeds 10 mm, entanglement of the fiber will occur in production, which is not preferable. In addition,
It was most preferable to use the one having an average length of about 1 to 3 mm in terms of design. On the other hand, as the fine mica powder, a commercially available Pearl Glaze (trade name) in which the fine mica powder was concealed with titanium oxide was used. The composition of the resin concrete layer is composed of glass frit, aluminum hydroxide, and glass fiber whose refractive index is relatively close to 100 parts by weight of a thermosetting liquid resin such as an unsaturated polyester resin or a vinyl ester resin. An aggregate such as milled fiber is added in an amount of 100 to 200 parts by weight, and a fibrous filler is added in an amount of from 0.01 to 5 parts by weight.
If the amount of the fibrous filler is less than 0.01 parts by weight, the design as a pattern cannot be exhibited. Is not preferred. Fine mica powder is used in an amount of not less than 0.01 part by weight and
It is preferable to add it in a ratio of not more than part by weight. The reason is that if the amount is less than 0.01 part by weight, the effect of the addition cannot be obtained, and even if it exceeds 3 parts by weight, no improvement in the metallic feeling is observed. What has been described above is a basic compounding portion for achieving the object of the present invention, further adding a small amount of toner having a small hiding power to a transparent gel coat layer or a resin concrete layer, adding a laminated structure, and It is also effective to add another filler to the resin concrete layer.

Hereinafter, embodiments of the present invention will be described more specifically. (Specific Example 1) A predetermined amount of a curing agent and a curing accelerator were mixed in a transparent unsaturated polyester resin (gel coat resin), and the mixture was applied to a surface mold with a spray gun to a thickness of 0.5 mm and cured. On the other hand, for the back mold, a back reinforcing layer of about 1 mm was formed by a hand lay-up method using an unsaturated polyester resin containing a large amount of a white pigment and glass fibers. A gap of about 8 mm was provided between the front mold and the back mold and fitted, and resin concrete having the following composition was poured into the gap and cured.

Iso-unsaturated polyester resin 100 parts by weight Glass frit 200 parts by weight Colored fibrous filler 1 part by weight Predetermined amount of curing agent and curing accelerator As colored fibrous filler, average fiber length dyed in pink A rayon fiber having a thickness of 1 mm was used. Then, by removing the front mold and the back mold, a patterned molded body having an intended laminated structure is obtained, and the obtained molded body is transparent through a transparent gel coat resin when viewed from the surface, thereby forming a resin concrete layer. The colored fibrous filler can be visually observed as a pattern. This is a completely different design from the conventional case where the resin concrete layer is uniformly colored with a pigment. That is, a new patterned molded body having a depth was obtained. This is because, by adding a colored fibrous filler having a length of 1 mm to the resin concrete layer, rather than simply coloring the resin concrete layer uniformly with a pigment,
This is because it becomes three-dimensional in design, reveals depth, and can be seen as a pattern.

(Specific Example 2) A predetermined amount of a curing agent and a curing accelerator were mixed in a transparent unsaturated polyester resin (gel coat resin), and the mixture was applied to a surface mold with a spray gun to a thickness of 0.5 mm and cured. . Thereafter, a non-woven fabric of glass fiber was mounted, impregnated with a transparent unsaturated polyester resin, and cured to form a transparent fiber-reinforced plastic layer 6 of about 1 mm. On the other hand, for the back mold, a back reinforcing layer of about 1 mm was formed by a hand lay-up method using an unsaturated polyester resin containing a large amount of a white pigment and glass fibers. A gap of about 8 mm was provided between the front mold and the back mold and fitted, and resin concrete having the following composition was poured into the gap and cured.

Vinyl ester resin 100 parts by weight Glass frit 200 parts by weight Colored fibrous filler 0.4 part by weight Fine mica powder 1 part by weight Predetermined amount of curing agent and curing accelerator Colored fibrous filler is dyed green A rayon fiber having an average fiber length of 3 mm was used. As the fine mica powder, commercially available pearl glaze (MC-355 manufactured by Nippon Koken Kogyo Co., Ltd., average diameter of 30 to 100 microns) was used. Then, by evading the tax on the front mold and the back mold, a patterned molded body having the desired laminated structure is obtained. As shown in FIG. 2, the obtained molded body is a transparent gel coat resin when viewed from the surface. 1 'and the transparent fiber-reinforced plastic layer 6 through which the colored fibrous filler 4' of the resin concrete layer 3 '
And the fine mica powder 5 can be visually observed as a pattern.
This has a completely different design from the case where the resin concrete layer is uniformly colored with a pigment, that is, a new metallic pattern having depth. This is length 3
mm colored fibrous filler and fine mica powder are added to the resin concrete layer, so that the resin concrete layer becomes more three-dimensional in design than the case where the resin concrete layer is uniformly colored with a pigment, and the depth appears, and This is because it can be seen as a metallic pattern.

[0013]

As described above, in the laminated structure in which the transparent gel coat layer, the resin concrete layer, and the fiber reinforced plastic layer are sequentially laminated from the surface, the colored fibrous filler or the colored fibrous filler is added to the resin concrete layer. When the molded body to which fine mica powder is added is seen through a transparent gel coat layer, it looks like a metallic pattern with a three-dimensional depth. This makes it possible to obtain a completely new molded product with a rich design.

[Brief description of the drawings]

FIG. 1 is a partial cross-sectional view showing a patterned molded body having a laminated structure according to an embodiment of the present invention.

FIG. 2 is a partial cross-sectional view when a transparent fiber-reinforced plastic layer is further provided on the molded article.

[Explanation of symbols]

 1, 1 'transparent gel coat layer 2, 2' resin concrete layer 3, 3 'fiber reinforced plastic layer 4, 4' colored fibrous filler 5 fine mica powder 6 transparent fiber reinforced plastic layer

Claims (2)

(57) [Claims] 1. A transparent gel coat layer which is sequentially poured from the surface.
Colored fibrous filler formed by curing
A patterned molded body having a laminated structure in which an added resin concrete layer and a fiber reinforced plastic layer serving as a backside reinforcing layer are laminated . 2. A colored fibrous filler for the resin concrete layer.
And a fine mica powder added thereto.