A weather strip seal for an automotive vehicle, and its manufacturing method

The present invention relates to a weather strip seal (101) for an automotive vehicle which is provided for sealing between a first structure and a second structure, and to a method for manufacturing such a strip seal. This weather strip seal comprises: a main leg (102) made of at least one polymeric material, having one side (102a) and another side (102b) and terminating in a first end (102c) and second end (102d), a first sealing portion (103) designed to press against said first structure and extending on said one side of said leg adjacent said first end, and a metal carrier (104) for retaining the shape of said strip seal which has an asymmetrical substantially U-shaped cross-section having a first branch (104a) which reinforces at least one portion of said main leg and a second branch (104b) which extends from said second end on said another side and terminates in a second sealing portion (105) designed to sealingly press against said second structure, said metal carrier having a metal surface. According to the invention, said carrier is provided on at least said first branch with at least one ionomer tie layer (106) located between said metal surface and said at least one polymeric material, which makes the latter adhere to said metal surface.