Hot melt type seal agent for a lamp

Details Hot melt type seal agent for a lamp Hot melt type seal agent for a lamp

1988-07-19

1990-02-13

Lieberman, Allan M.

Synthetic resins or natural rubbers -- part of the class 520 ser

Synthetic resins

At least one aryl ring which is part of a fused or bridged...

524275, 524489, C08L 9106, C08L 9304

Patent

active

049007700

ABSTRACT:
The present invention relates to the hot melt type seal agent for adhering and sealing a head lamp of a vehicle, wherein a lens and a housing are integrally one unit. The necessary component materials of the hot melt type seal agent of the present invention include a mixture produced by butyl rubber, SEBS block copolymer and olefin with high softening point. The hot melt type seal agent of the present invention withstands temperature changes in the head lamp and the gas pressure that is filled therein. Consequently, good adhesion, waterproof and high gas-tight performances are achieved.

REFERENCES:
patent: 4039364 (1985-09-01), Pollet et al.
patent: 4509821 (1985-04-01), Stenger

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