Sumitomo Chemical Company, Limited

Toru Yabe

Yoshiaki Togawa

Makoto Nagata

Masahito Matsumoto

Tomoo Hirota

Molded article and process for producing same

A bumper reinforcing structural unit that can be manufactured at low cost, and provides superior impact resistance in a light weight body. The bumper reinforcing structural unit made of a polymeric resin includes a frame body portion having an upper plate, a lower plate and two end plates for forming an interior space therein. Transverse partition plates divide the interior space of the frame body portion along a longitudinal direction into a central space and two end spaces. A front plate covers the front of the central space, and two back plates cover the back of the end spaces.

Bumper reinforcing structural unit

An impact energy absorptive structures is made of usual plastic materials suitable for molding processing, and is designed to suit different degrees of impact loading anticipated in various applications. The impact energy absorptive structures is composed of a base member 11 and protruding rib members including long and short members, in which the proportion of the cross sectional area of the long rib members is between 0.3 to 0.8 of the total cross sectional area of the rib members. Other design modifications can be made readily to customize the impact resistance of the impact energy absorptive structures.

Impact energy absorptive structures

An impact energy absorptive structure is made of usual plastic materials suitable for molding processing, and is designed to suit different degrees of impact loading anticipated in various applications. The impact energy absorptive structure is composed of a base member 11 and protruding rib members including long and short members, in which the proportion of the cross sectional area of the long rib members is between 0.3 to 0.8 of the total cross sectional area of the rib members. Other design modifications can be made readily to customize the impact resistance of the impact energy absorptive structures.

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Ichihara, Japan

Toru Yabe