Photo-curing hollow structure and method of curing the same

A photo-curing hollow structure, comprising:

• a fluid-injectable internal bag layer;
• a base-material layer superposed on an external periphery of the internal bag layer and impregnated with a photo-curing resin;
• and
• an outer layer superposed on an external periphery of the base-material layer and having transparency,
• the hollow structure having, in an unused state, flexibility and being stored and kept in a light-tight storage bag or case, the hollow structure when used being taken out of the storage bag or case, wholly expanded by injection of a fluid into the internal bag layer, and formed into a hollow molded structure by direct sunlight or light of an artificial light source passing through the outer layer and curing the base-material layer in an expanded state,
• wherein the base-material layer comprises a reinforcing fiber layer impregnated with the photo-curing resin, and a flow-resisting member which prevents circumferential flow of the photo-curing resin, the flow-resisting member woven on the reinforcing fiber layer, arranged at desired intervals in a circumferential direction of the base-material layer, and extending over a longitudinal direction of the base-material layer.

A photo-curing hollow structure, comprising:

• a fluid-injectable internal bag layer;
• a base-material layer superposed on an external periphery of the internal bag layer and impregnated with a photo-curing resin;
• and
• an outer layer superposed on an external periphery of the base-material layer and having transparency,
• the hollow structure having, in an unused state, flexibility and being stored and kept in a light-tight storage bag or case, the hollow structure when used being taken out of the storage bag or case, wholly expanded by injection of a fluid into the internal bag layer, and formed into a hollow molded structure by direct sunlight or light of an artificial light source passing through the outer layer and curing the base-material layer in an expanded state,
• wherein the base-material layer comprises a reinforcing fiber layer impregnated with the photo-curing resin, and pre-cured members arranged in portions of the reinforcing fiber layer and preventing flow of the photo-curing resin.

A photo-curing hollow structure, comprising:

• a fluid-injectable internal bag layer;
• a base-material layer superposed on an external periphery of the internal bag layer and impregnated with a photo-curing resin;
• and
• an outer layer superposed on an external periphery of the base-material layer and having transparency,
• the hollow structure having, in an unused state, flexibility and being stored and kept in a light-tight storage bag or case, the hollow structure when used being taken out of the storage bag or case, wholly expanded by injection of a fluid into the internal bag layer, and formed into a hollow molded structure by direct sunlight or light of an artificial light source passing through the outer layer and curing the base-material layer in an expanded state,
• wherein fiber having high thermal conductivity is mixed into a reinforcing fiber layer forming the base-material layer, the reinforcing fiber layer impregnated with a photo-curing resin.

A photo-curing hollow structure, comprising:

• a fluid-injectable internal bag layer;
• a base-material layer superposed on an external periphery of the internal bag layer and impregnated with a photo-curing resin;
• and
• an outer layer superposed on an external periphery of the base-material layer and having transparency,
• the hollow structure having, in an unused state, flexibility and being stored and kept in a light-tight storage bag or case, the hollow structure when used being taken out of the storage bag or case, wholly expanded by injection of a fluid into the internal bag layer, and formed into a hollow molded structure by direct sunlight or light of an artificial light source passing through the outer layer and curing the base-material layer in an expanded state,
• wherein the internal bag layer is formed of a transparent film through which direct sunlight or light of an artificial light source passes.

A method of curing a photo-curing hollow structure, the photo-curing hollow structure comprising:

• a fluid-injectable internal bag layer;
• a base-material layer superposed on an external periphery of the internal bag layer and impregnated with a photo-curing resin;
• and
• an outer layer superposed on an external periphery of the base-material layer and having transparency,
• the hollow structure having, in an unused state, flexibility and being stored and kept in a light-tight storage bag or case, the hollow structure when used being taken out of the storage bag or case, wholly expanded by injection of a fluid into the internal bag layer, and formed into a hollow molded structure by direct sunlight or light of an artificial light source passing through the outer layer and curing the base-material layer in an expanded state,
• the method comprising:
• rotatably supporting both end portions of the photo-curing hollow structure;
• and
• rotating the photo-curing hollow structure in a curing process, and applying direct sunlight or light of an artificial light source uniformly to the base-material layer.