PROBLEM TO BE SOLVED: To protect a float for supporting a wall net from degradation with time and prevent damage of its appearance.SOLUTION: The float cover includes a cylindrical member 1 made of a reinforced plastic material and produced by a filament winding method, and lids 2 to close the longitudinal end parts of the cylindrical member 1. The float for supporting a wall net is produced by placing a floating member 3 in the cylindrical member 1 and closing both longitudinal ends with the lids 2. Since the floating member 3 is used in a state covered with the float cover, discoloration, degradation and staining of the material of the floating member 3 with time are suppressed and the beautiful appearance is maintained. The reinforced plastic material produced by filament winding method has rigid texture, is resistant to deterioration by solar light and water relative to an expanded resin and other light resin such as foamed polystyrene used as a material for the floating member 3, and is resistant to staining of the surface. It is economical because the float cover is continuously usable simply by exchanging the floating member 3.【課題】仕切網を支持するフロートを経年劣化から保護し、美観が損なわれないようにする。【解決手段】フィラメントワインディング法により製造された強化プラスチック製の筒状部材１と、その筒状部材１の筒軸方向端部を閉じる蓋体２とを備えたフロート用カバーを用い、浮子３を筒状部材１内に収容した状態でその筒軸方向両端部を蓋体２で閉じた仕切網支持用フロートとした。この構成によれば、浮子３がフロート用カバーによって覆われた状態で使用されるため、経年による浮子３の素材の変色、劣化や汚れが抑制され、美観を向上し得る。また、フィラメントワインディング法により製造された強化プラスチックは硬質であり、浮子３の素材に用いられる発泡スチロール等の発泡性樹脂やその他軽量な樹脂よりも、日光や水に対して相対的に劣化しにくく、また、その表面に汚れが付着しにくい。また、浮子３の交換のみ行えばフロート用カバーは継続して使用できるので経済的である。【選択図】図１
