JPH03258687A - Float coated with thermal shrinkage film - Google Patents

Abstract

PURPOSE:To prevent the lowering of buoyance and damage of a float caused by the sticking of seaweeds of the like in the float for a raft for breeding sea living things by coating the edge of the float with a bag-like shrinkage films and shrinking them by heating and in the next step coating the center of the float with cylindrical heat shrinkage films and shrinking them by heating. CONSTITUTION:Both ends of cylindrical float 1 are covered by baglike thermal shrinkage films 2, and the films 2 are heated and shrunk, as a result, both ends of the floating 1 are tightly coated by the films 2. In the next step the center section or center section and end sections of the float 1 are covered by cylindrical bag-like thermal shrinkage films 3, and the films 3 are heated and shrunk to tightly seal the bag-like films 2 and the float 1. These films 2 and 3 are made of polyethylene or the like. In addition, to these films 2 and 3 disinfectant, mildewproofing agent, paraffin, wax, etc. are added or applied for preventing from sticking of living things such as seaweeds, barnacles, or the like. This constitution can protect and prevent the float from being stuck by seaweeds or the like.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a float that prevents a decrease in buoyancy caused by the attachment of living things such as algae or barnacles.

[Prior Art] Conventionally, floats made of synthetic resin foam used for aquaculture rafts or floating piers in the sea, lakes, and rivers are covered with synthetic resin bags to prevent damage to the floats. was.

[Problem to be solved by the invention] The synthetic resin bag covering the float is easily damaged because it does not adhere to the float, and water may enter from the damaged part and organisms such as algae or Fujibbo may adhere to the float. , Organisms also adhered to the surface of the bag, reducing the buoyancy of the float.

[Means for Solving the Problems] The present invention was developed in view of solving the above problems, and therefore, an embodiment of the present invention will be described below based on the drawings.

Figures 1 and 2 are cross-sectional views of a cylindrical float covered with a heat-shrinkable film (hereinafter referred to as film), and Figure 3 is a side view of a spherical float covered with a film. be.

When the float is columnar as described in claim 1, that is, in the case of FIG. 1 or FIG. After covering the float 1 with a bag-shaped film 2, it is heated and shrunk, and then the center part of the float 1 is covered with a cylindrical film 3 with both ends open, and then heated and shrunk so that it is tightly attached to the bag-shaped film 2. let

As the film, polyethylene, polypropylene, polystyrene, nylon, polyethylene terephthalate, etc. can be used, but the film is not limited to these.

Furthermore, in order to improve the adhesion of the overlapping parts of the films, a multilayer film laminated with ethylene vinyl acetate resin, etc., or a film coated with a pressure-sensitive adhesive can also be used. To prevent this, a bactericide, a fungicide, a paraffin, a wax, etc. can be applied or applied to the heat-shrinkable film.

The shape of the float includes a cylindrical shape, a polygonal column shape, and the like.

When the float is spherical as described in claim 2, the float 1 is first covered with a cylindrical film 4 with both ends open, and then heated and shrunk, and then the first After coating the float in a direction perpendicular to the film, it is heated and shrunk. The length of the film 4 is preferably such that both ends of the film are in close contact with the float after shrinkage.

As described in claim 3, by covering the float with heat-shrinkable films or more twice, if the outermost film becomes contaminated or damaged, use can be continued by simply removing the film.

The film can be perforated to facilitate removal of the used film.

[Effect of the invention 3- As described above, the float coated with the heat-shrinkable film of the present invention is more strongly protected because the film is in close contact with the float, and moreover, the buoyancy caused by the attachment of organisms to the float is reduced. This can prevent deterioration and damage to the film.

Furthermore, if the float is coated with a film many times, if the outermost film becomes contaminated or damaged, it can be used continuously by simply removing the film.

[Brief explanation of drawings]

1 and 2 are cross-sectional views of a cylindrical float coated with a heat-shrinkable film, and a side view of the cylindrical float. 1...Float 2...Bag-shaped heat-shrinkable film 3...Cylindrical-shaped heat-shrinkable film 4...Cylindrical-shaped heat-shrinkable film

Claims (1)

[Claims] 1. Both ends of a columnar float are covered with a bag-shaped heat-shrinkable film that is sealed on one side and open on the other, and then heated and contracted, and then covered with a cylindrical heat-shrinkable film. A float coated with a heat-shrinkable film, characterized in that the center portion of the float is coated and then heated to shrink. 2. A spherical float is covered with a cylindrical heat-shrinkable film that is open at both ends and then heated to shrink it, and then a cylindrical heat-shrinkable film that is open at both ends is coated in a direction perpendicular to the cylindrical heat-shrinkable film. 1. A float coated with a heat-shrinkable film, characterized in that the film is coated with a heat-shrinkable film and then shrunk by heating. 3. The float coated with a heat-shrinkable film according to claim 1 or 2, characterized in that the heat-shrinkable film is coated twice or more.