JPH04355129A - Preparation of metal like frp molded product - Google Patents

Abstract

PURPOSE:To obtain a molded product such as a baseball bat having metal gloss by a method wherein a transfer layer having a metallized layer is superposed on a base layer of a semicured state to be transferred thereto and a surface layer in a semicured state is superposed on the transfer layer to be bonded thereto and two or more formed laminates are further laminated, if necessary, along with a core material to be integrally cured. CONSTITUTION:The glass cloth 1a of a reel 5 and the release papere 19 of a reel 6 are superposed one upon another by a roll 17 and impregnated with the thermosetting resin supplied from a resin supply means 20 and the impregnated one is dried through a drying chamber 13 to take up as a semicured base layer 1 by a reel 7. Next, a transfer sheet 2 having a transfer layer 2b consisting of an adhesive layer 2f, a metallized layer 2e, a printing layer 2d and a release layer 2c and the base layer 1 are superposed one upon another and passed through nip rollers 14a, 14b to transfer the transfer layer 2b to the base layer 1. A semicured thermosetting resin impregnated glass cloth layer 3 is superposed on the transfer layer 2b of the base layer 1 and dried in a drying chamber 16 to form a laminate. The formed laminates are further laminated or laminated along with a core material to be cured.

Description

[Detailed description of the invention]

0001

[Industrial Field of Application] The present invention relates to a method for producing metallic-like FRP molded products, and more particularly to FRP molded products that include a metal vapor deposited layer with a printed layer in the inner layer and exhibit metallic luster and patterns, particularly for sports equipment such as sports equipment. The present invention relates to a method for manufacturing FRP molded products suitable for use in baseball bats, ski boards, corrugated boards, etc.

0002

2. Description of the Related Art Conventionally, as FRP molded products exhibiting a pattern, there are those in which a printed paper layer is provided as an inner layer of the FRP molded product.

[0003] From the viewpoint of decorativeness of FRP molded products, it is desired to produce metallic FRP molded products that not only exhibit a pattern but also have a metallic luster.

However, conventionally, no method has been provided for manufacturing FRP molded products exhibiting both metallic luster and patterns. The first possible manufacturing method is to form a reflective layer on the top surface of the printed paper using gold or silver ink, print a pattern on it, and then mold the paper into FRP. One possible method is to incorporate it as an inner layer of the product. However, the reflectance of the reflective layer formed with gold ink or silver ink is still insufficient, and it is not possible to achieve sufficient metallic luster.

On the other hand, it is technically difficult to deposit a metal such as aluminum with sufficient metallic luster on the upper surface of this paper. However, in order to obtain sufficient metallic luster, it is preferable to use a vapor-deposited layer of metal such as aluminum.

[0006]

SUMMARY OF THE INVENTION Therefore, the technical problem to be solved by the present invention is to provide a method for manufacturing an FRP molded article having a metal vapor deposited layer as an inner layer.

[0007]

[Means, Actions, and Effects for Solving the Problems] In order to solve the above technical problems, according to the present invention, the following manufacturing method is provided.

This manufacturing method will be explained in detail with reference to FIGS. 1, 2, and 3.

FIG. 1 is a sectional view showing the steps of this manufacturing method, and FIG. 2 shows an FRP molded article manufactured by manufacturing method 2.

In FIG. 1, 1 is a thermosetting resin-impregnated glass cloth base layer, 2 is a transfer sheet, and 3 is a transparent thermosetting resin-impregnated glass cloth surface layer.

The transfer sheet 2 includes, in order from bottom to top, an adhesive layer 2f, a metal vapor deposited layer 2e such as aluminum, a printed layer 2d printed on the upper surface of the metal vapor deposited layer 2e, and this printed layer 2d. It is formed by laminating a release layer 2c covering the mold and a release layer 2a. And each layer 2c, 2d, 2e and 2f
The laminate forms a transfer layer 2b for the release layer 2a.

In the present invention, in the first step, the base layer 1, that is, the layer to be placed on the core material 4 such as a plastic molded product, is made by impregnating glass cloth with a thermosetting resin and semi-curing it. It will be done. This semi-cured state is a state that has not been completely cured and still has sufficient adhesiveness. This base layer 1 is made on release paper (see Figure 3).

In the second step, the transfer sheet 2 is superimposed on the semi-cured base layer 1. Then, the transfer layer 2b of the transfer sheet 2 is transferred and adhered to the base layer 1 by a pressure transfer method or a pressure heat transfer method. As described above, at this point, the base layer 1 is in a semi-cured state, so the adhesive layer 2f of the transfer layer 2b and the semi-cured resin of the base layer 1 are bonded extremely well. Then, the release layer 2a is peeled off.

In the third step, a glass cloth is impregnated with a thermosetting resin, and as in the case of the base layer 1, it is heated to semi-cure to form the surface layer 3. This semi-cured surface layer 3 is then bonded onto the transfer layer 2.

[0015] The laminate formed as described above (Fig.
In the final step, the semi-cured thermosetting resin of layers 1 and 3 is completely cured by applying pressure and heating using a press. As a result, the laminate shown in FIG. 2 is a completely integrated FRP molded product. In addition, as shown by the imaginary line in FIG. 2, the laminate may not be cured after being laminated on a core material 4 such as a plastic molded product.

In the FRP molded product completed as described above, since the surface layer 3 and the release layer 2c are transparent, the metal vapor deposited layer 2e exhibits an extremely excellent metallic luster, and the metal deposited layer 2e has excellent metallic luster. The printed pattern on the printed layer 2d will be visible on the outside. In this way, it is possible to produce an FRP molded article that has gloss and exhibits a pattern, which is the initial objective of the present invention.

The following materials are suitable for use.

(Base layer 1 and surface layer 3) Thermosetting resin: urethane resin, melamine resin, epoxy resin, unsaturated polyester resin, the most preferred resin is thermosetting epoxy resin. Glass cloth: Glass fibers with a diameter of 20 μm or less are bundled, with a vertical density of 10 to 50 pieces/25 mm, and a horizontal density of 10 to 3.
Plain weave or twill weave with 0 threads/25 mm and mass of 150 to 350 g/m2.

(Transfer sheet 2) Adhesive layer 2f: Acrylic and rubber solvent-soluble adhesive, acrylic emulsion type adhesive. Metal vapor deposition layer 2e: Aluminum vapor deposition printing layer 2d: Gravure ink release layer 2c: Cellulose resin, PVC resin Release layer: Polyester resin

[0020]

EXAMPLE An example of the manufacturing method according to the present invention will be described in detail below with reference to FIG.

In FIG. 3, (I) represents the first step;
I) indicates the second step, and (III) indicates the third step.

As shown in (I), in the first step, the glass cloth 1a is let out from one reel 5, while the release paper 19 is let out from the other reel 6, and the glass cloth 1a and the release paper 19 are rolled out. At point 17, the sheets are overlapped and sent forward, that is, toward the drying chamber 13. A supply means 20 for supplying a thermosetting resin liquid is provided near and above the roller 17, and the resin is continuously supplied from the supply means 20 onto the glass cloth 21a. In the drying room 13,
The thermosetting resin liquid is heated to a semi-cured state. The base layer 1 thus produced is wound onto a reel 7.

Next, in the second step, the base layer 1 is fed out forward from the reel 7, while the transfer sheet 2 is fed out forward from the reel 8, and the base layer 1 and the transfer sheet 2 are fed out by the nip rollers 14a and 14b. The rollers 15a, 15 are overlapped under pressure and sent forward.
At point b, the release layer 2a is wound onto one reel 9, and the base layer 1 onto which the transfer layer 2b has been transferred is wound onto a reel 10.

Next, in the third step, the base layer 1 to which the transfer layer 2b has been transferred is fed out forward from the reel 10, while the glass cloth 3 is fed out forward from the reel 11. Then, as in the first step, the two are overlapped at the roll 18, and the thermosetting resin liquid is continuously supplied onto the glass cloth 3 from the supply means 21, and the drying chamber 16 is heated.
sent to. In the drying chamber 16, the thermosetting resin is heated and cured, and the molded product thus produced is wound onto the reel 12.

[Brief explanation of the drawing]

FIG. 1 is a sectional view showing a manufacturing process according to the present invention.

2 is a sectional view of an FRP molded product manufactured by the manufacturing process shown in FIG. 1. FIG.

3 is a process diagram showing an example of the manufacturing process of FIG. 1. FIG.

[Explanation of symbols]

1 Thermosetting resin impregnated glass cloth base layer 1
a Glass cloth 2 Transfer layer sheet 2a Release layer 2b Transfer layer 2c Release layer 2d Print layer 2e Metal vapor deposited layer 2f Adhesive layer 3 Thermosetting resin impregnated glass cloth surface layer 4
Core material

Claims (1)

[Claims] [Claim 1] Glass cloth coated with thermosetting resin.
The first step is to semi-cure the impregnated base layer (1), and the adhesive layer (2f), the metal vapor deposited layer (2e), the printing layer (2d), and the release layer (2c) are applied from below. A transfer sheet (2) formed by laminating a release layer (2a) on a transfer layer (2b) laminated in this order is overlaid on a semi-cured base layer (1), and a pressure transfer method is applied. Alternatively, a second step of transferring and adhering the transfer layer (2b) to the base layer (1) using a pressure heating transfer method, and a surface layer (3) formed by coating and impregnating a thermosetting resin on glass cloth in a semi-cured state. In the third step of superimposing and adhering on the transfer layer (2), the laminate itself laminated in the first to third steps, or the laminate laminated on the core material (4), is heated and heated. A method for manufacturing a metal-like FRP molded product, characterized by curing and integrating thermosetting resin by pressing.