JPS5816978A - Ship body coated with shellfish preventing polyethylene - Google Patents

Abstract

PURPOSE:To prevent a shellfish from adhering to the belly of a ship, by coating the belly of the ship with an adhesive polyethylene plate. CONSTITUTION:The belly of a ship is coated by a polyethylene plate formed such that four layers of vinyl, copolymer resin of vinyl acetic acid, EVA and polyethylene, successively arranged from lower layers, are heated and softened under pressure while increased with combination of a molecule then formed as an integral unit. In this way, the belly of the ship results in the coating by the polyethylene plate having an iron adherable vinyl surface in its rear side while a shellfish preventive pure polyethylene surface in its front side.

Description

[Detailed Description of the Invention] Up to Towa, paints containing polyethylene had been applied as a method of protecting ships, but because the amount of polyethylene added was so small, it was not possible to demonstrate the non-adhesive properties of polyethylene; There was a problem that increasing the amount added made it difficult to coat.

The present invention completely solves the drawbacks of the conventional technology and makes full use of the properties of polyethylene to enable nearly perfect armor adhesion.
The purpose of the present invention is to provide a polyethylene-coated hull for armor.

That is, it relates to a polyethylene-coated hull for armor, in which the hull is covered with a polyethylene plate.

The structure of the present invention has been described above, and the embodiments will be described in detail as follows.
The hull surface is made of iron and cannot be bonded to polyethylene. However, the structure and manufacturing method of the polyethylene board of the present invention is to heat four layers of vinyl, vinyl iridic acid copolymer resin, EVA, and polyethylene in order from the bottom layer to the top layer.
Pressure is applied to soften the material, and at the same time, the molecular bonds are further unified.

Therefore, is it impossible to bond vinyl and polyethylene together?
By using GVA, the copolymer resin of vinyl and base acid can be attached to vinyl and EVA, and 7c[]VA can be attached to polyethylene! 'i'
1 capacity, it is possible to combine four layers, and after molding the one-piece polyethylene plate into a suitably sized plate, it is approximately 3 Q c
an, 2 M I! This makes the plate extremely lightweight.

The polyethylene plate of the present invention has a vinyl curved surface that can be accessed to iron, and a pure polyethylene surface that can be used as armor, so the surface is made of vinyl and 4) 11 The fi surface is a resin-based adhesive.6
This made it possible to cover the hull with polyethylene plates.

As a result of the above, the armor was completely covered by using pure polyethylene, which takes full advantage of the properties of polyethylene, instead of the incomplete armor method used up until now, and the polyethylene plates could be partially replaced. Therefore, repair is extremely easy. Furthermore, the polyethylene plate of the present invention is lightweight and does not affect the weight of the ship, and there is no fluid resistance as seen when watching for shellfish.Moreover, the time required for shellfish removal work, the labor cost, and the need to reuse armor. Since there is no painting work involved, ship maintenance costs, which are said to account for about one-third of the cost of voyages, have been drastically reduced, and in addition, ship maintenance costs, which are said to account for about one-third of the cost of voyages, have also been reduced. The results of the present invention, such as eliminating losses such as

Applicant Ao Yamashiki Male Ha, □゛ Hiroshi ``)'-9 Fuchi Hiroshi (5,

Claims (1)

[Claims] A hull coated with polyethylene for armor, with the hull covered with adhesive polyethylene plates.