Plastic and nonmetallic article shaping or treating: processes – With severing – removing material from preform mechanically,... – Forming continuous work followed by cutting
Patent
1990-02-07
1991-12-03
Silbaugh, Jan H.
Plastic and nonmetallic article shaping or treating: processes
With severing, removing material from preform mechanically,...
Forming continuous work followed by cutting
264138, 264152, 264261, 264263, B29C 4708, B29C 4514, B29C 6570
Patent
active
050698494
ABSTRACT:
A method for forming a window frame molding for use in association with a motor vehicle window glass. The molding is formed by extruding a plurality of linear members of a suitable plastic material, selectively cutting away a portion of one end of each extrusion, placing the cut away ends in a mold with the ends in juxtaposition within the mold and coacting with the mold to form a corner cavity, and injection molding a similar plastic material into the corner cavity to form a molded corner mold section lockingly interconnecting the extrusions. This process is then repeated at the other corners of the molding to form the final frame molding. The cut away end sections of the extrusions are desirably treated prior to being placed in the mold with a suitable preparation intended to soften the plastic material of the extrusions to facilitate the bonding process as between the extrusions and the injection molded corner insert.
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Eastley Brian J.
Silbaugh Jan H.
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