| 摘要 |
PURPOSE: To form an inner bag-like part without inducing an environmental contamination and to sufficiently uniformly form it by attaching a synthetic resin by spraying, then internally installing a container in a heat insulation furnace, and rotating it for a long time. CONSTITUTION: The container is formed by pressing, deep drawing or other method, then protective lacquer and primer are executed on an inner surface, an inner baglike part is formed by a synthetic resin coating of a polyolefin or a mixture containing the polyolefin. The container is then contained in a gas flowing furnace, and rotated for a long time. The material of the inner container is not concentrated at a specific position of an inner surface of the container by rotating, and air or solvent is not confined. Thus, the sufficiently uniform inner baglike part of a thickness of 80 to 120 micron is formed, and the polyolefin is almost completely burned, and hence an environmental contamination is not brought about. |
