| 摘要 |
This ribbon (3) used in binding and decorating has the feature of comprising preferably two separate superposed flat films of polyolefin plastic, which are bonded or glued together to form an intimate union, said union involving basic films differing form each other by their elastic elongaton and/or heat-shrinkage properties such that, on leaving the production equipment, said difference between said films results in a different extent of shortening between the two said films, to hence cause curving of their constituted assembly, said curving being contained within a range of elastic deformation compatible with the curvature connected with subsequent winding of the ribbon formed by said layers onto usual reels (10) by usual methods, and such as to create spontaneous curling of the ribbon (11) at the ambient temperatures at which it is used, as soon as it is unwound from said reel (10). |
