Thermoplastic frame for a sealing or wheel cover profiled element of a motor vehicle, production method thereof, and profiled element comprising same

A bendable thermoplastic reinforcement of substantially U-shaped cross section for reinforcing a profiled element of a motor vehicle selected from the group consisting of profiled seals and profiled trim moldings, the reinforcement having a central portion and two arms, each arm comprising over its length a series of limbs which are separated from one another by slots,

• wherein over at least one part of the length of the reinforcement, each limb has laterally an asymmetrical geometry and an area greater than that of each adjacent slot,
• wherein said arms comprise a series of pairs of said asymmetrical limbs which, within each pair, are formed laterally opposite one another, each asymmetrical limb ending in a free end having a longitudinal width which is smallest for the limb, and
• wherein each asymmetrical limb has substantially a shape of a comma defined by a first tooth edge having a convexly curved profile and by a second tooth edge having either a straight profile or concavely curved profile, said first tooth edge and said second tooth edge being joined at said free end which is of pointed or rounded shape, said at least one part of the reinforcement being substantially in a form of a saw-toothing having teeth inclined on a same side.