Elastoforming die/form block comprising low-hardness silicone el

Details Elastoforming die/form block comprising low-hardness silicone el Elastoforming die/form block comprising low-hardness silicone el

1990-03-05

1991-03-19

Jones, David

Metal deforming

Tool and/or tool holder

Including flexible or yieldable tool or support

72 54, 72 57, 294211, 524262, 524267, 524394, 524398, 524588, 524730, 524731, 524783, 524862, 524478, 524 15, 524 31, 524 32, B21D 2600

Patent

active

050000292

ABSTRACT:
Resilient, crosslinked silicone elastomers shaped as elastoforming dies or form blocks for the stamping of sheet material workpieces, e.g., ultra-thin sheet metal, and well adopted for applications in the automotive industry, comprise a crosslinked fluid organopolysiloxane including at least one silicone-compatible organic or inorganic plasticizer within the crosslinked network thereof, said at least one plasticizer being stable and nonmigrating under elastoforming stamping conditions, and said at least one plasticizer being present in such amount that said plasticized silicone elastomer has a Shore 00 hardness of less than about 40.

REFERENCES:
patent: 3998778 (1976-12-01), Berg et al.
patent: 4386188 (1983-05-01), Grancio et al.
patent: 4722957 (1988-02-01), Braun et al.

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