Nitto-denko Corporation

Seiji Kijima

Toshitaka Nakamura

Yoshihiro Hieda

Kazuhiko Miyauchi

Yukiko Azumi

Motoshige Tatsumi

Tsukasa Sato

A structure for preventing glass from breaking, having a combination of a surface glass breaking prevention material, a glass substrate and a metal plate arranged in the order, wherein an internal glass breaking prevention material made of an elastomer or viscoelastomer having a dynamic shear modulus of not larger than 1&#xd7;10Pa is interposed between the glass substrate and the metal plate. Particularly, in the glass breaking prevention structure configured as described above, destructive impact energy (B) by which the glass substrate is destroyed when a steel ball 50 mm in diameter and 500 g in weight is dropped on the surface glass breaking prevention material is not lower than 1.2 times as high as destructive impact energy (A) measured in the same manner upon a glass breaking prevention structure having the same configuration as the first-mentioned structure except that the internal glass breaking prevention material is not interposed.

Structure for preventing glass from breaking and plasma display device

A loudspeaker member comprising a viscoelastic foam obtained by vulcanization-foaming a viscous rubber mixture comprising the following components (A), (B), (C), and (D), wherein the viscoelastic foam has a tensile strength of from 0.1 to 100 kg/cm.sup.2 and a specific gravity of from 0.07 to 1.2;

Member for loudspeaker

Growing community of inventors

Osaka, Japan

Seiji Kijima