| 摘要 |
PURPOSE: A composite sheet is provided to prevent each components of the sheet from being readily peeled off from each other and the deterioration of a desired moisture-permeability of a film thereof. CONSTITUTION: The composite sheet(1) comprises a thermoplastic synthetic resin film(2) and a thermoplastic synthetic resin fibrous sheet(3) bonded to at least one of upper and lower surfaces of the film. The film is formed on its surface opposed to the fibrous sheet with a plurality of bulgy zones extending in one direction in parallel and spaced apart from one another and substantially flat zones each defined between each pair of the adjacent bulgy zones. The film is welded along the bulgy zones to the fibrous sheet. |
