JPH0140676Y2 - - Google Patents

Description

[Detailed description of the invention] This invention relates to a synthetic resin molded product with improved surface appearance and increased commercial value.

In recent years, it has been proposed to reduce the weight of golf club shafts and fishing reels by forming them from lightweight materials such as reinforced fiber-reinforced thermoplastic synthetic resin materials. The reinforcing fibers stand out on the surface and look bad, and even if the molding die is textured as a countermeasure, there is a drawback that the conditions such as the molding injection part and the turbulent flow part of the reinforcing fibers can be visually confirmed. As a countermeasure, there is a method in which the surface is subjected to sandblasting or the like to form a finely uneven surface to give it a satin finish, so that the molding injection part and the turbulent flow part cannot be seen visually.

However, the surface after sandblasting has a white appearance with countless reinforcing fibers exposed, and the gloss of the surface is significantly impaired.

Furthermore, when using a reel for sea fishing, it is unavoidable that seawater will adhere to it, and if moisture or salt adheres to the reel, problems may occur, but as mentioned above, the sandblasted surface has fine irregularities. As a result, water and salt tend to adhere to the surface, and the water does not drain well and remains damp for a long time, and when stored, it is often stored in cases or bags with insufficient drainage. If other fishing gear is stored, moisture will transfer to other fishing gear and cause corrosion.Furthermore, if salt adheres to the finely uneven surface along with moisture and hardens, a phenomenon similar to whitening will occur and the resin will deteriorate. This phenomenon is particularly noticeable in the case of dark tones.

Furthermore, if only oil or silicone oil is applied to the surface, it will wash off with water in a short period of time, spoiling the aesthetic appearance and significantly reducing the product value.

In view of the above-mentioned drawbacks, the purpose of the present invention is to form a two-layer coating film of a colorless and colored transparent clear coating film on the rough surface after roughening treatment on the surface of the resin molded material,
The objective is to propose a synthetic resin molded product that has a paint film that is resistant to peeling and wear, and a resin base that has a deep coating.

Hereinafter, the present invention will be explained with reference to the illustrated embodiment.If a synthetic resin molded product is described as a fishing reel body, the reel body 1 shown in FIG. A reel leg 3 is integrally fixed to the upper side of the open casing 2, and molded to form a protrusion 4 for fitting the handle shaft on the side wall of the casing 2.

The above-mentioned molding material uses, for example, a polyamide resin material as a base material, and glass fibers, carbon fibers, and potassium titanate fibers are mixed as reinforcing materials at a weight ratio of 30% to 60% of the base material, respectively.

The reel body 1 taken out from the mold is deburred, and then, for example, the air pressure is 5 kg/cm.
A rough surface 6 is formed on the surface of the resin molded material 5 by sandblasting, buffing, and shot honing by spraying an abrasive material onto the surface of the reel body in a processing time of 1 to 20 minutes.

When the rough surface 6 is formed on the base of the resin molding material 5 on the surface of the reel body 1 as described above, the turbulent flow areas, scratches, sink marks, etc. of the molding injection part and reinforcing fibers disappear, but
The reinforcing fibers become fluffy and exposed on the surface like the short hairs 7, so they become white and lack luster, making it easy for moisture to be absorbed into the surface.

Next, on the rough surface 6, acrylic, epoxy,
Colorless transparent clear coating with urethane-based paint 8
A two-layer coating film 10 of a colored transparent clear coating film 9 is formed.

As described above, when the rough surface 6 is formed on the surface of the resin molded material 5 and the colorless transparent clear coating film 8 is formed, the whitening caused by the short hairs 7 disappears.

Furthermore, when the colored transparent clear coating film 9 is formed, the base of the resin molded material 5 appears deep and clear, and the coating becomes beautiful.The two-layer coating film 10 is resistant to peeling and wear, and the product value can be significantly increased. .

Before forming the colorless transparent clear coating film 8 on the rough surface 6, symbols and symbols are printed on the surface by silk screen printing.
A trademark such as a mark, a model number, etc. are written on the surface, and a printing paint is applied to the surface, and a two-layer coating film 10 of a colorless transparent clear coating film 8 and a colored transparent clear coating film 9 is formed thereon. is firmly attached and protects the printed surface.

The above synthetic resin molded product may be applied to resin molded products such as golf club shafts and fishing rod handles other than the reel body.

Since the present invention is configured as described above, the scratches and turbulent patterns of fibers on the surface of the synthetic resin molded product are erased by the roughening treatment, and the surface that becomes white and loses its luster is colorless due to the roughening treatment. By covering with the two-layer coating film 10 of the transparent clear coating film 8 and the colored transparent clear coating film 9, the whitening is eliminated, and the resin base becomes deep, clear and beautiful due to the color tone of the resin and the color of the colored transparent clear coating material. The result is a synthetic resin molded product that exhibits excellent effects such as significantly increasing its appearance and product value.

[Brief explanation of the drawing]

The drawings show one embodiment of the present invention; Fig. 1 is an external perspective view of the reel body, Fig. 2 is an enlarged sectional view of the surface after roughening treatment, and Fig. 3 is the surface after two-layer coating film formation. It is an enlarged sectional view. 1...Reel body, 5...Resin molding material, 6...
...Rough surface, 8...Colorless transparent clear coating film, 9...Colored transparent clear coating film, 10...Two-layer coating film.

Claims (1)

[Scope of utility model registration request] A rough surface is formed on the surface of a resin molded material made of reinforced fiber-reinforced synthetic resin material impregnated with synthetic resin, a colorless transparent clear coating is applied on the rough surface, and a colored transparent clear coating is further applied on the coating. A synthetic resin molded product characterized by forming a two-layer coating film.