Floating body of sophisticated shape produced from a single sheet of film with a single sealing
AssigneeNihonmatai Co., Ltd.
InventorTatsuo Noguchi
Life of this patent
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Abstract
A floating body comprising a first swelling portion having a gas inlet port through which gas is introduced and a plurality of second swelling portions each being held in fluid communication with the first swelling portion. The first and second swelling portions are formed by folding a single multi-layer film to form a nonpleat portion corresponding to the first swelling portion and pleat portions corresponding to the second swelling portions and by sealing the folded multi-layer film along a continuous seal line which extends over both the pleat and nonpleat portions and forms the gas inlet port in the nonpleat portion.
Claims7
A floating body comprising a first swelling portion having a gas inlet port through which gas is introduced and a plurality of second swelling portions each being held in fluid communication with said first swelling portion,
- said first and second swelling portions being formed by folding a single multi-layer film to form a nonpleat portion corresponding to said first swelling portion and pleat portions corresponding to said second swelling portions and by sealing the folded multi-layer film along a continuous seal line which extends over both said pleat and nonpleat portions and forms said gas inlet port in said nonpleat portion.
A floating body comprising a single multi-layer film defining a first swelling portion having a gas inlet port through which gas is introduced and a plurality of second swelling portions each being held in fluid communication with said first swelling portion,
- said film having a first portion defining a nonpleat portion of the floating body and folds defining pleat portions, and a continuous seal line extending over both said pleat portions and said nonpleat portion and forming said gas inlet port in said nonpleat portion, said nonpleat portion defining said first swelling portion and said pleat portions defining said second swelling portions.
Dependencies are inferred from the claim text.