| 摘要 |
PURPOSE:To obtain an extensive tarpaulin or synthetic resin film by a method wherein a given tarpaulin or synthetic resin film is given a mutually-joining function and joined to each other in a construction site and the like. CONSTITUTION:On both sides in the longitudinal direction of a sheet 1 are provided a male pawl part 5 provided with a projection 4 and a female pawl part 3 provided with a concavity 2. The sheet 1 having such a structure is stretched in parallel so that the male and female pawl parts 5 and 3 are opposed to each other and the opposed parts 5 and 3 are engaged, thereby plural number of sheets are joined to each other. In this way, the application of the sheet in a working site can be performed with ease. |
