Stock material or miscellaneous articles – Sheet including cover or casing – Complete cover or casing
Patent
1980-07-08
1983-08-16
Epstein, Henry F.
Stock material or miscellaneous articles
Sheet including cover or casing
Complete cover or casing
428241, 428331, 428428, B32B 516
Patent
active
043991750
ABSTRACT:
A heat-insulating body such as a heat-insulating slab is made whose insulating and heat-absorbing material includes a fine powder, in particular a silica aerogel which is pressed to form the body. To carry out the pressing operation a sack-like sheath is required but between the sheath and the insulating material a separating agent is provided which results in the fact that the surface of the insulating material does not intimately engage with the sheath which is for example of glass fibre fabric, the sheath being movable with respect to the insulating material after the pressing operation. Apart from the fact that the sheath can be removed for any cases where it would be a cause of disturbance, additionally the insulating body provides improved bending properties and even when made with a high pressing rate has a homogeneous structure. To make the insulating body the separating agent may be applied to the inner surfaces of the sheath, the particulate insulating material then being introduced and the sheath sealed, whereafter pressure is applied.
REFERENCES:
patent: 2051849 (1936-08-01), Hanna
patent: 2113068 (1938-04-01), McLaughlin, Jr.
patent: 2238342 (1941-04-01), Riehl
patent: 2308305 (1943-01-01), Reynolds
patent: 3199481 (1965-08-01), Handwerker
patent: 3869334 (1975-03-01), Hughes et al.
Kummermehr Hans
Mohr Gunther
Epstein Henry F.
Grunzweig & Hartmann und Glasfaser AG
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