Intumescent sheet material

Details Intumescent sheet material Intumescent sheet material

1990-08-06

1992-05-05

Chin, Peter

Paper making and fiber liberation

Processes and products

Plural fiber containing

1621816, 1621818, 1621819, D21H 1767

Patent

active

051104130

ABSTRACT:
Intumescent sheet material having a matrix whose predominant ingredient is an unfired kaolinitic clay comprising ball clay reinforced by inorganic vitreous fibre (for example, mineral wool) contains heat-expandable graphite as intumescent agent and up to 10 percent by weight of an organic binder. It is made by dewatering an aqueous suspension of the aforesaid ingredients in the form of a layer which includes cellulose fibre as web-forming agent.

REFERENCES:
patent: 3574644 (1971-04-01), Olstowski
patent: 3916057 (1975-10-01), Hatch et al.
patent: 4378271 (1983-03-01), Hargreaves et al.
patent: 4454190 (1984-06-01), Katagiri

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