Shell element, shell structure and structure forming set
AssigneeJinzaikaihatsu-sienkikou Co., Ltd.
InventorKeisuke KITAGAWA
Life of this patent
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Abstract
A shell element that can be formed simply and in a short time, a shell structure using the shell element, and a structure forming set that can form the shell element simply and in a short time are provided. Resin material is foamed on the inside of thin film, a foamed material portion with bubbles being mixed is in the state of being sandwiched by the thin film and a solid layer, and tensional stress is applied to the thin film and the solid layer and compressive stress is applied to the foamed material portion, thus the shell element is difficult to be cracked or split, and the shell structure is formed by the shell element. And, the shell structure forming set forms the shell structure easily.
Claims15
In a shell element constituting a shell structure enclosing space, the shell element that is characterized as follows:
- the said shell element is composed of thin film that constitutes one side of surfaces of the said shell element and a layered foamed material portion;
- the said layered foamed material portion adheres to the said thin film, thus the said thin film and the said layered foamed material portion are integrated;
- on the surface of the said foamed material portion that does not adhere to the said thin film, a solid layer with low bubble density exists;
- the surface of the solid layer facing to the said space is exposed to the said space;
- and
- tensile force is applied to both of the said thin film and the said solid layer and compressional force is applied to the said foamed material portion except for the said solid layer.
(canceled)
A structure forming set that is characterized as follows:
- the said structure forming set is composed of single-layered thin film, a holding means of the thin film, a spraying means of foamed material, and resin material;
- the said thin film is integrated to form a shape enclosing space and has an opening portion to enable to open the outside and inside of the said space;
- the said holding means of thin film closes the said space by holding the peripheral edge of the said thin film and enables the said thin film to curve convexly toward the outside;
- and
- the said spraying means of foamed material can spray the said resin material mixed with bubbles on the inner surface of the said thin film that is curved convexly toward the outside, and constructs structures, in which a foamed material portion with an exposed solid layer of low bubble density adheres only to the inner surface of the said thin film.
Dependencies are inferred from the claim text.