JP2620719B2 - Oil fence and method of manufacturing the same - Google Patents

Description

Description: TECHNICAL FIELD The present invention relates to an oil fence in which a sheet made of a synthetic resin is formed into a tube and air is sealed therein, and a method of manufacturing the same.

(Problems to be Solved by the Prior Art and the Invention) As is well known, an oil fence is used for surrounding the oil spilled on the sea surface to prevent its diffusion.

These conventional oil fences include, for example, those shown in FIGS. 6 (a) to 6 (c).

This conventional oil fence 21 is composed of a fence 22, a floating body 23, and a weight 24, and the use state of the oil fence 21 is attached to the lower end of the floating body 23 with respect to the sea surface 25 as shown in FIG. Fence with weight 24
Only 22 is used as it appears above sea level 25.

In this case, the floating body 23 is formed to have a thickness L as shown in FIG. 2B because of the necessity of obtaining buoyancy against the weight 24, and the material is made of a foamed resin or a lightweight body such as a hollow inside. With this configuration, the above-mentioned buoyancy is obtained.

This conventional oil fence 21 is a floating body for obtaining buoyancy.
Since the weight 23 and the weight 24 for increasing the weight are indispensable components composed of separate members, it has been difficult to further simplify the configuration and reduce the manufacturing cost.

Also, in the winding state for loading the oil fence 21 on a ship, as shown in FIG.
Since the wall 23 becomes very bulky due to the thickness L, the loadable amount, that is, the length of the oil fence 21 is necessarily limited.

Furthermore, the weight 24 is also integrally provided, and the weight increases proportionally as the length of the oil fence 21 increases.
The length of 21 is limited.

For this reason, for the diffusion of oil over a wide range, there is a problem that the oil on the sea surface cannot be surrounded and the oil cannot be recovered because the range of the surrounding area is limited due to the above reason. It was.

The present invention has been made in order to solve the above problems, and an object thereof is to provide an oil fence having a simple configuration by integrally forming an oil fence with a synthetic resin sheet and a method of manufacturing the oil fence. To provide.

(Means for Solving the Problems) The present invention makes it possible to easily manufacture an oil fence by providing a means for increasing the buoyancy and weight by enclosing air inside a synthetic resin sheet, and it is possible to continuously manufacture the oil fence. The present invention has been made to solve the above-mentioned problem by making it extendable and further performing the production on board.

That is, first, in the present invention, a plurality of air packaging bodies each formed by forming a synthetic resin sheet into a tube and enclosing air therein are connected, and the lower part of the air packaging body can be submerged under the sea surface. An oil fence provided with a means for increasing the weight as much as possible, wherein the means for increasing the weight is an oil fence which is a water-absorbing material for impregnating seawater provided outside the air package. .

Secondly, the present invention relates to a method of manufacturing an oil fence which is used while being manufactured by a packaging machine mounted on a ship, and is used for sealing a long synthetic resin sheet with air therein. This is a method for manufacturing an oil fence in which an air package in which a sheet is sealed and seawater or earth and sand is further enclosed in the sheet is continuously extended.

Thirdly, the present invention relates to a method of manufacturing an oil fence which is manufactured and put into use by a packaging machine mounted on a ship, wherein an elongate synthetic resin sheet provided with a water-absorbing material is provided therein. A method for manufacturing an oil fence, comprising: forming an air package by forming a cylinder so as to enclose air therein; and forming the air package by continuously extending the air package.

(Operation) In the oil fence having the first configuration,
Due to the buoyancy generated by the air sealed inside the air package, the upper part of the air package will appear on the sea surface,
Since the means for increasing the weight of the air package is a water-absorbing material for impregnating seawater, if an oil fence is laid on the sea, the water-absorbing material impregnates seawater and has a weight of the seawater, By balancing the weight with the air inside the air package, the oil fence is located on the sea surface, and the oil on the sea surface can be reliably shut off.

Further, in the method for manufacturing an oil fence having the second configuration, an air packaging body is formed by forming a synthetic resin sheet into a cylindrical shape by using a packaging machine mounted on a ship so as to enclose air therein. By enclosing seawater or earth and sand in a package and connecting this air package continuously, an oil fence can be easily and continuously manufactured on the ship.

Further, in the method of manufacturing an oil fence having the third configuration, the air-wrapping can be performed by forming a synthetic resin sheet provided with a water-absorbing material into a cylindrical shape by using a packing machine mounted on a ship so as to enclose air therein. The body is formed, and the oil fence can be easily and continuously manufactured by connecting the air packaging bodies in series.

(Example) Hereinafter, an example of the present invention will be described with reference to the drawings.

In FIGS. 1 (a) and 1 (b), reference numerals 3 ... denote a plurality of air packages constituting the oil fence 1. The air packages 3 are formed by a synthetic resin sheet 10 described later. Air 4 and seawater 7 are sealed inside the package 3.

 2 indicates a vertical seal portion, and 5 indicates a horizontal seal portion.

The oil fence 1 is manufactured by the following manufacturing method.

In FIGS. 2A and 2B, reference numeral 11 denotes a conventionally known packaging machine, which is mounted on a ship.

Reference numeral 10 denotes a synthetic resin sheet wound in a roll shape.

12 indicates a vertical sealer, and 13 indicates a horizontal sealer. 14
Denotes a pump for discharging seawater into the synthetic resin sheet 10 fed from the upper part of the packaging machine 11.

Reference numeral 15 denotes a foamer for forming the flat synthetic resin sheet 10 into a cylindrical shape.

A process of manufacturing the oil fence 1 by the packaging machine 11 will be described, but a known technique conventionally performed is omitted.

First, after the synthetic resin sheet 10 is conveyed from the upper part of the packaging machine 11 and formed into a tubular shape by the former 15, the vertical sealer
The vertical sealing portion 2 is formed by heat welding with the use of 12 to form a cylindrical body in which air is sealed.

Next, the individual air packaging bodies 3 are formed by being divided into predetermined sections by the horizontal sealer 13 so as to close the cylindrical body. The seawater injected by 14 is quantitatively injected into each air package 3, and then the upper horizontal seal is performed and hermetically sealed.

Here, in the case of the conventional packaging machine, the package is cut at the same time as the horizontal seal or after the horizontal seal, and is cut into individual packages as much as possible.However, in the packaging machine 11 of the present embodiment, the cutting is not performed. The air package 3 is formed in a continuous state.

By repeatedly performing the above operations, the oil fence 1 is continuously formed.

The oil fence 1 manufactured by the above manufacturing method is integrally formed in a simple structure by the packaging machine 11 and is not a separate structure such as a floating body or a weight as in the related art. You can.

Further, in the use state of the oil fence 1, the buoyancy caused by the air sealed inside the air package 3 and
At the same time, the balance of the weight of the seawater encapsulated inside makes it possible to be located at the sea surface, so that oil on the sea surface can be reliably shut off.

In addition, since the packaging machine 11 is mounted on the ship and the oil fence 1 is manufactured on the ship, it is quite easy to procure the seawater, and the seawater is spread on the sea as shown in FIG. It is possible to surround the oil fence 1 while sequentially manufacturing the oil fence.

In the above embodiment, the seawater 7 is injected into the means for increasing the weight inside the air package 3, but this is by no means a condition. For example, earth and sand such as seabed sand may be collected and sealed. It is.

Further, in the above embodiment, the air 4 and the seawater 7 are integrally sealed inside the air package 3, but this is not a condition, and the air 4 and the seawater 7 inside the air package 3 are separately partitioned. It may be enclosed.

In the above embodiment, seawater 7 is used as a means for increasing the weight of the air package 3, but this is by no means a condition. For example, as shown in FIG.
If the air wrapping body 3 is manufactured by using at least a part of the synthetic resin sheet 10 provided with a water-absorbing material such as the nonwoven fabric 6, the weight increases due to the impregnation of the water-absorbing material by the seawater when the oil fence 1 is laid in the seawater. This makes it possible to omit the step of enclosing the seawater 7 or the weight-increased substance such as earth and sand inside the air package 3 as in the manufacturing process of the above-described embodiment, thereby further simplifying the manufacturing operation. As a result, cost can be reduced.

Further, this water absorbing material may not be provided in the synthetic resin sheet 10 from the beginning, and may be formed so that the seal portion has a water absorbing property by a heat seal of the vertical seal 2 or the horizontal seal 5.

As described above, since the oil fence 1 of the present embodiment has a simple configuration, it can be manufactured at low cost.
The material to be prepared both in the manufacturing method and in the case of manufacturing on a ship is substantially only a synthetic resin sheet, and if the synthetic resin sheet is loaded in a roll-like state with a small bulk, an oil fence can be used. Since it is possible to continuously extend the oil, it is possible to surround a wide range of oil.

Also, after the use of the above-mentioned oil fence 1, when the air and seawater or earth and sand of the air package 3 of the oil fence 1 are returned to the sea when the oil fence 1 is stored in a ship, the oil fence 1 to be collected becomes bulky. There is no such thing.

Note that the packaging machine 11 used in the method of manufacturing the oil fence of this embodiment is merely an example of a known packaging machine, and the type, shape, and the like are not limited.

(Effects of the Invention) As described above, the oil fence of the present invention is formed by forming a synthetic resin sheet into a tubular shape to enclose air and, furthermore, since the oil fence is provided with a water-absorbing material as a weight increasing means, The structure becomes simple, and the manufacturing cost can be reduced as compared with the conventional oil fence.

Further, the present invention is a method for manufacturing an oil fence in which seawater or earth and sand is sealed as a means for increasing the weight of the air package of the oil fence on a ship,
It is said that seawater and earth and sand can be easily obtained on the sea, and if only synthetic resin sheets are prepared without the need to load a weight as in the past, it is possible to manufacture while extending the oil fence continuously with resource saving. It has a very special effect.

Further, the present invention is a method for manufacturing an oil fence made of a synthetic resin sheet provided with a water-absorbing material in order to increase the weight of the air package of the oil fence on a ship. There is also a great advantage that the weight of the air package can be increased by the impregnation of seawater, and the oil fence can be manufactured sequentially and continuously without requiring a weight for increasing the weight.

Further, in the oil fence of the present invention, since the means for increasing the weight is a water-absorbing material for impregnating seawater, when the oil fence used at sea is collected, the impregnated seawater is squeezed. By removing the oil fence, the oil fence can be housed without bulk by using only the synthetic resin sheet.

[Brief description of the drawings]

FIG. 1 shows an oil fence according to an embodiment of the present invention,
(A) is a front view, (B) is an AA cross-sectional view thereof. FIG. 2 shows a packaging machine in a state of manufacturing an oil fence according to an embodiment of the present invention, wherein (a) is a plan view and (b) is a right side view thereof. FIG. 3 is a perspective view showing a synthetic resin sheet and a nonwoven fabric according to the embodiment of the present invention. FIG. 4 is a front view showing an oil fence according to another embodiment of the present invention. FIG. 5 is a perspective view showing a state of manufacturing an oil fence on a ship according to the embodiment of the present invention. 6A and 6B show a conventional oil fence, wherein FIG. 6A is a front view, FIG. 6B is a sectional view taken along line XX, and FIG. 6C is a perspective view showing the stored state. 1 ... oil fence, 2 ... vertical seal, 3 ... air package, 4 ... air, 5 ... horizontal seal

Claims (3)

(57) [Claims] 1. A plurality of air packages each having a tubular shape of a synthetic resin sheet and air enclosed therein are connected to each other, and the air package has a weight so that the lower part thereof can be submerged under the sea surface. An oil fence provided with a means for increasing the weight, wherein the means for increasing the weight is a water-absorbing material for impregnating seawater provided outside the air package. . 2. A method of manufacturing an oil fence which is used while being manufactured by a packaging machine mounted on a ship, comprising: forming a long synthetic resin sheet into a tube so as to enclose air therein; Further, a method for manufacturing an oil fence, characterized in that an air package body in which seawater or earth and sand is sealed inside the sheet is formed by continuously extending the air package body. 3. A method of manufacturing an oil fence manufactured by a packaging machine mounted on a ship and put into use, wherein a long synthetic resin sheet provided with a water-absorbing material is filled with air. A method of manufacturing an oil fence, comprising forming an air package by forming the air package into a tube as much as possible, and forming the air package in such a manner that the air package is sequentially and continuously extended.