Rubber layer structure

Details Rubber layer structure Rubber layer structure

1997-12-29

2000-06-06

Krynski, William

Stock material or miscellaneous articles

Hollow or container type article

Polymer or resin containing

428 368, 4284763, 4284769, 428509, 428515, 428519, 428521, 5253317, 5253318, 5253326, 525387, 525343, B29D 2200

Patent

active

060715820

ABSTRACT:
A rubber layer structure provided with a first rubber layer having a first liquid facing surface for contact with a liquid surface and a second rubber layer in contact with a second surface of the first rubber layer. The first rubber layer is formed of a peroxide vulcanization first rubber compound which mainly comprises EPDM, contains sulfur powder as a co-crosslinking agent and does not contain a zinc compound. The second rubber layer is formed of a sulfur vulcanization second rubber compound which mainly comprises EPDM and contains a zinc compound. The first rubber layer and the second rubber layer are adhered together by vulcanization.

REFERENCES:
patent: 3407158 (1968-10-01), Guglielmino et al.
patent: 4983685 (1991-01-01), Aoshima et al.

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