The process involves elevating temperature of a wall and ends of cells of an alveolar structure (26). Pressurized gas is injected into a channel to expand the wall of the channel and flatten the channel against the ends of the cells of the alveolar structu...

Provided are a material for processing which is significantly improved in vibration damping performance, sound insulation performance and sound absorption performance and is capable of reducing the weight of, and improving the mechanical strength of, a pro...