| 摘要 |
In the production of moulds for making moulded articles, eg foundry moulds for producing castings, it is known to consolidate resin-coated granular filler in a moulding box containing a pattern to form the moulded pieces. A gas such as SO2 is passed through the filler to cause it to set. However, after repeated use, resin buildings up on the pattern plate. According to the invention, the pattern is provided with alayer of silicone release agent such as siloxane which prevents resin build-up yet can be easily washed away. |
