JPS588044Y2 - reinforced float - Google Patents

Description

[Detailed explanation of the idea] The present invention relates to a novel float.

Floats made from various materials are already known.

Among them, hollow floats like glass bottles are vulnerable to shocks.
Synthetic resin foams, particularly polystyrene foams, are lightweight and have excellent buoyancy, making them suitable for floats, but they have the drawback of being weak in strength and easily damaged.

Glass fiber-reinforced synthetic resins have excellent impact resistance and durability and are suitable materials for floats, but it is not possible to obtain strong hollow objects using these materials without using a core material.

As a result of research to obtain a strong float by taking advantage of the excellent properties of glass fiber-reinforced synthetic resin, the present inventor has developed an extremely suitable float by coating the surface of a specific hollow core material with a layer of glass fiber-reinforced synthetic resin. We have discovered that it can be made into a reinforced float, and have completed the present invention.

In the present invention, a lid made of synthetic resin foam is placed on both ends of a pipe made of paper, metal, or synthetic resin, and at least the surface of the lid is coated with a solvent-resistant material. The gist of the float is a reinforced float characterized by having a glass fiber reinforced synthetic resin covering the entire outer layer of a core material which is covered with a pipe.

The pipe used in the reinforced float of the present invention is made of steel, aluminum, alumite, other metals, or alloys thereof, synthetic resins such as polyvinyl chloride, polystyrene, polyethylene, polypropylene, foams of these resins, or 5 pieces of cardboard. Corrugated paper or other so-called stiff paper is used.

These pipes constitute a support when a layer of glass fiber-reinforced synthetic resin is coated on the surface thereof, and it is sufficient that the pipes have sufficient shape retention, and therefore, it is sufficient to have an extremely thin thickness.

Both ends of the pipe are covered with lids made of synthetic resin foam.

This synthetic resin foam is made by foaming resins such as polystyrene, polyethylene, polypropylene, rigid polyurethane, and polyvinyl chloride, or their copolymers or mixed resins, and has closed cells. Synthetic resin foams are preferably used.

Among these, polystyrene foam is a suitable material because it is easy to manufacture.

Therefore, it is preferable that the outer surface of the synthetic resin foam is formed into a spherical shape when the lid is closed.

This makes it easy to coat the surface of the float with glass fiber reinforced synthetic resin uniformly, and the float has strong resistance to impact, which is effective in reducing resistance to wind and waves.

The outer surface of the lid made of the synthetic resin foam described above is coated with a solvent-resistant material.

This solvent-resistant material is applied not only to the surface of the lid, but also when the entire surface of the pipe is coated with the solvent-resistant material, for example, after a lid that has not yet been coated with solvent-resistant material is applied to both ends of the pipe. may have been done.

Examples of such solvent-resistant materials include films of polyolefin resins such as polyethylene, polypropylene, and polybutadiene, halogenated resin films, nylon films, and foam sheets of these resins.

These solvent-resistant materials will not be dissolved or weakened by the solvent when coating the glass fiber reinforced synthetic resin.

Glass fiber-reinforced synthetic resin is a mixture of synthetic resin such as polyester resin, epoxy resin, and phenol resin with glass fiber, and is lightweight and has excellent strength and durability.

In the reinforced float of the present invention, a solvent-resistant material is interposed between the synthetic resin foam and the glass fiber reinforced synthetic resin layer.

In particular, when the synthetic resin foam is a polystyrene foam and a layer of glass fiber-reinforced synthetic resin is coated on the outer surface of the foam, the polystyrene is There is a risk that the foam may partially melt and become deformed.

In such a case, for example, the surface of the foam may be covered with a solvent-resistant material such as a synthetic resin film made of polyolefin resin such as polyethylene, polypropylene, or polybutadiene, and then covered with a glass fiber-reinforced synthetic resin. Dissolution or deformation of the body can be prevented.

It is preferable to shrink-wrap the foam using a so-called shrinkable film stretched in one direction as the melt-resistant material.

Note that when the foam is made of polyolefin such as polyethylene or polypropylene, it is not necessarily necessary to cover it with a polyolefin resin film, but it is effective for strengthening the button of the float and preventing breakage.

For example, even if cracks occur in the float due to a collision with a ship or other causes, and floating oil infiltrates into the crack, there is no risk of the foam inside melting, and the float is extremely stable.

If the reinforced float of the present invention is explained with reference to the drawings, 1 is a pipe made of hard polyvinyl chloride.

2 is a polystyrene foam; polystyrene foam 2
constitutes a lid that is fitted and closed on both ends of the pipe 1, and the outer surface of the lid is formed into a spherical shape.

The entire outer surface of the core material into which the lid is fitted onto the pipe is covered with a polyethylene film 3.

Both ends of the pipe 1 are covered with a curved lath fiber-reinforced synthetic resin layer 5 on the outer surface of a hollow 4 core material covered with lids.

This layer is formed, for example, by adding styrene monomer or other solvent to polyester resin and glass fiber, and coating the entire surface of the core material with the mixture.

6 is a through hole for fixing with string, steel, etc.

The fitting 7 that forms the through hole 6 is made of synthetic resin such as polyethylene, polypropylene, polyvinyl chloride polyester resin, or nylon, or a metal that is not eroded by seawater, and is made of polystyrene foam 2 that makes up the lid.
The surface of the polystyrene foam 2 is firmly attached by covering the surface of the polystyrene foam 2 with glass fiber reinforced synthetic resin at the same time as the surface of the polystyrene foam 2.

8 is a concave portion provided in a band shape around the float for fastening a rope.

When the recess 8 is provided, the fixture 7 for forming the through hole 6 is not necessarily required.

The thickness of the glass fiber-reinforced synthetic resin layer 5 cannot be increased freely by repeated coating.The glass fiber-reinforced synthetic resin layer has good impact resistance and excellent corrosion resistance, so it cannot be made too thick. do not have to.

The glass fiber reinforced synthetic resin layer usually has a thickness of several to ten tens of U.

The reinforced float of the present invention is made of a hollow 4 which is covered with a lid covered with a synthetic resin film at both ends of the nob 1.
It is extremely lightweight, has strong buoyancy, and has good strength.

The surface of the core material made of covered pipe is made of solvent-resistant material.
The float is coated with a layer of glass fiber reinforced synthetic resin and is extremely impact resistant, corrosion resistant and strong.

Glass fiber-reinforced synthetic resin is strong and there is no risk of it breaking, but even if cracks occur, water will not seep into the interior, and by applying multiple coats of paint, cracks will spread to the inner layers. 1, and it is also possible to repair cracks and the like by painting and covering the glass fiber reinforced synthetic resin layer.

The reinforced float of the present invention is strong and has strong buoyancy as described above, and is extremely suitable as a float for fishing, marking, aquaculture, a float for fixed nets, and other floats.

[Brief explanation of the drawing]

The drawings illustrate the reinforced float of the present invention, and FIG. 1 is a sectional view of the reinforced float. The main symbols in the drawings are as follows. 1... Pipe, 2... Polystyrene foam, 3...
- Polyethylene film, 4...Hollow, 5...Glass fiber reinforced synthetic resin layer, 6...Through hole, 7...5 mounting holes, 8...Recessed portion.

Claims (5)

[Scope of utility model registration request] (1) A lid made of synthetic resin foam is placed on both ends of a pipe made of paper, metal, or synthetic resin, and at least the surface of the lid is coated with a solvent-resistant material, and A reinforced float characterized in that the entire outer layer of a core material whose lid body is attached to a pipe is coated with glass fiber-reinforced synthetic resin. (2) The reinforced float according to claim (1), wherein the outer surface of the lid made of synthetic resin foam is formed into a spherical shape. (3) Claims for utility model registration in which the pipe is made of paper or a metal such as iron, copper, aluminum, alumite, or an alloy thereof, or a synthetic resin such as polyvinyl chloride, polystyrene, polyethylene, or polypropylene. Reinforced float described in (1). (4) Synthetic resin foam is polystyrene, polyethylene,
The reinforced float according to claim (1), which is a foam of polypropylene, polyurethane, polyvinyl chloride, a copolymer of these resins, or a mixed resin. (5) Solvent-resistant materials include films of polyolefin resins such as polyethylene, polypropylene, and polybutadiene, halogenated resin films, nylon films, or foamed sheets of these resins. float.