| 摘要 |
There is provided an automobile weather strip light in weight and excellent in appearance of the surface thereof, and also having sufficient hardness and strength. The automobile weather strip comprises a fitting base and a bulb shape, wherein the fitting base is formed of a dense rubber material with porosity containing air bubbles not more than 100 mum in average diameter, obtained by mixing a predetermined amount of thermal expansion microcapsules each having particles 3 to 20 mum (preferably, 5 to 15 mum) in average diameter, an expansion start temperature in a range of 110 to 150° C., a maximum expansion temperature in a range of 130 to 150° C., and a shell-wall made of acrylonitride copolymer to be subsequently foamed in a vulcanization process.
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