Mitsubishi Kasei Kogyo Kabushiki Kaisha

Tsutomu Nakayama

Minoru Tanaka

Ryuzo Ebina

In a welding apparatus of the type including a pair of opposing press plates relatively movable toward and away each other and each supporting a molded article to be welded together, and a heating plate movable into and out of a space between separated molded articles for fusing confronting surfaces of the molded articles whereby the molded articles are welded together by applying pressure thereto by the press plates, there are provided mold frames on the press plates. The mold frames define an opening having substantially the same contour as the molded articles to be welded together but having a slightly smaller size than the molded article. The inner surface of the opening is provided with an outwardly inclined surface.

Growing community of inventors

Matsudo, Japan

Tsutomu Nakayama