Multilayer injection molding

摘要: PURPOSE: To obtain a multilayered injection molding having shape sharply taking over the of mold cavity and strongly adhered resin layers by method in which composed first second is injected then third increasing volume molds. CONSTITUTION: Molds used are ones whose 1 changed its thickness relatively sliding an injector side 2 opening closing cylinder 3. In place, 4 amount enough not to fill up into previously regulated final molding, while center fluid state, 5 4. After such multilayer method, opened degree that can be obtained 6 sufficiently compatible with injected. COPYRIGHT: (C)1981,JPO&Japio