Adhesive bonding and miscellaneous chemical manufacture – Methods – Surface bonding and/or assembly therefor
Patent
1979-04-25
1981-04-14
Hoffman, James R.
Adhesive bonding and miscellaneous chemical manufacture
Methods
Surface bonding and/or assembly therefor
427243, 427344, 4273722, 427379, 4273978, B05D 118, B05D 138, B05D 302, B05D 304
Patent
active
RE0305758
ABSTRACT:
A method of manufacturing a contact body for at least one flowing medium is disclosed wherein layers of asbestos fibers are formed and arranged so that the layers bear against one another at mutually spaced positions to provide channels in the body extending from one end thereof to the other to allow the flowing medium to pass therethrough. The layers of the contact body are first treated by supplying to the layers at least one inorganic substance which produces a [hydrated] precipitate on the asbestos fibers of the layers. Thereafter the layers are heated to a temperature which is at least within a temperature range at which the [hydrated precipitate releases its] asbestos fibers release their water of crystallization, but which temperature is below the sintering temperature for the substances remaining in the body. As a further step, at least one further substance is supplied to the contact body layers which restores the mechanical strength of the body lost by the transformation of the asbestos fibers during the heating step.
REFERENCES:
patent: 1972500 (1934-09-01), Toohey et al.
patent: 2354350 (1944-07-01), Schvetz
patent: 2354351 (1944-07-01), Schvetz
patent: 2434466 (1948-01-01), Marc
patent: 3499812 (1970-03-01), Glav
A B Munters
Hoffman James R.
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