Abstract: A sheathing material includes a sheet base material on which a plurality of concave portions is regularly formed to be adjacent to each other by embossing processing. Each concave portion includes a polygonal lattice portion that includes a pair of V-shaped ridgelines, when seen from a plan view of the sheathing material, which is symmetrically arranged with respect to a symmetrical axis so that opening-sides of the V-shaped ridgelines are opposed to each other and is formed on a front side surface of the sheet base material, and a trough portion that includes a pair of inclined folding lines extending to come close to each other and inclined towards a backside of the sheet base material from respective apexes of the V-shaped ridgelines, when seen from the plan view, and a horizontal folding line connecting tips of the inclined folding lines.

Abstract: A sheathing material includes a sheet base material on which a plurality of concave portions is regularly formed to be adjacent to each other by embossing processing. Each concave portion includes a polygonal lattice portion that includes a pair of V-shaped ridgelines, when seen from a plan view of the sheathing material, which is symmetrically arranged with respect to a symmetrical axis so that opening-sides of the V-shaped ridgelines are opposed to each other and is formed on a front side surface of the sheet base material, and a trough portion that includes a pair of inclined folding lines extending to come close to each other and inclined towards a backside of the sheet base material from respective apexes of the V-shaped ridgelines, when seen from the plan view, and a horizontal folding line connecting tips of the inclined folding lines.

Abstract: A short chain-like ferrule structure 15 includes a plurality of ferrules 2, and an interconnecting portion 16 interconnecting the plurality of ferrules 2. This ferrule structure includes a connection portion 20 provided at that portion of the interconnecting portion 16 projecting from the ferrule 2 disposed at one end portion of the ferrule structure, and a connection reception portion 21 which is provided at that portion of the interconnecting portion 16 projecting from the ferrule 2 disposed at the other end portion of the ferrule structure, and is engageable with the connection portion 20 of another short chain-like ferrule structure. Projections 23 are formed at the connection portion 20, and project from the interconnecting portion 16, and holes 25 for the passage of the projections 23 of another short chain-like ferrule structure therethrough are formed in the connection reception portion 21, and extend through the interconnecting portion 16.

Abstract: A short chain-like ferrule structure 15 includes a plurality of ferrules 2, and an interconnecting portion 16 interconnecting the plurality of ferrules 2. This ferrule structure includes a connection portion 20 provided at that portion of the interconnecting portion 16 projecting from the ferrule 2 disposed at one end portion of the ferrule structure, and a connection reception portion 21 which is provided at that portion of the interconnecting portion 16 projecting from the ferrule 2 disposed at the other end portion of the ferrule structure, and is engageable with the connection portion 20 of another short chain-like ferrule structure. Projections 23 are formed at the connection portion 20, and project from the interconnecting portion 16, and holes 25 for the passage of the projections 23 of another short chain-like ferrule structure therethrough are formed in the connection reception portion 21, and extend through the interconnecting portion 16.