Adhesive bonding and miscellaneous chemical manufacture – Methods – Surface bonding and/or assembly therefor
Patent
1987-10-08
1989-04-18
Silbaugh, Jan H.
Adhesive bonding and miscellaneous chemical manufacture
Methods
Surface bonding and/or assembly therefor
156329, 264219, 264303, B28B 114, B29C 3340, B29C 3342, B32B 3112
Patent
active
048224383
ABSTRACT:
A process for insulating a rotational casting mold for use in a casting process for making a substantially even thickness fascia. The fascia is prepared by placement of a plastic powdered material into an enclosed mold, heating and agitating the mold for distributing the plastic powder on the mold surfaces to provide a substantially even thickness fascia part on the molding surface. The mold includes first mold surfaces for defining critical portions of the mold which correspond to the desired portions of the mold for forming the finished shape of the part by melting of the plastic powder to a uniform film along the surface. The mold also includes second mold surfaces defining non-critical portions of the mold where it is undesirable for plastic filming to occur. An insulating material covers the second mold surfaces, creating a temperature barrier on the second mold surfaces reducing the effective temperature of the second mold surfaces such that the plastic powder will melt on the first mold surfaces but not on the second surfaces. The process for insulating the rotational casting mold includes cutting a plurality of sections of insulating material to fit the non-critical portions of the mold, coating the non-critical portions of the mold with a heat resistant bonding material before assembling the cut sections onto the non-critical portions followed by curing of the bonding material.
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Baum Forrest F.
Williams, Jr. Nelson E.
Kutach Karen D.
Sheller-Globe Corporation
Silbaugh Jan H.
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