(under subclass 101) Process which include, prior to the bonding operation, (1) treating portions of the work parts so as to prevent bonding, where so treated; (2) juxtaposing a series of parts, portions of which are of materials that will not bond; or (3) treating tools to be used in the bonding operation to prevent adherence of bonding material thereto.
(1) Note. The bond preventing of this subclass is intended to prevent uniting of certain areas of the parts at the temperatures and pressure of the welding operation. Also, the "materials that will not bond" include those materials previously treated in the manner of phrase (1).
(2) Note. The bond inhibiting material of this subclass is of insignificant thickness.
SEE OR SEARCH THIS CLASS, SUBCLASS:
189, for fusion bonding of plural joints with use of spacing means for holding bonded parts a significant distance apart.
215+, for fusion bonding with use of means which prevents bonding material from flowing to those portions of the parts where bonding is not desired.
SEE OR SEARCH CLASS 156, Adhesive Bonding and Miscellaneous Chemical Manufacture,
289, for a laminating process utilizing a bond inhibiting parting material.
164, Metal Founding,
72+, for a process of coating a mold surface with an agent to prevent adherence of cast metal to the mold.
