| 摘要 |
<p>PURPOSE:To enable a granular pattern to be simply and surely formed on a synthetic resin product by molding a back resin layer on the undersurface of a base resin, while injection molding the mixture of the base resin with the granular resin. CONSTITUTION:Since granular resin 3 is in a softened state when it is injected from a gate with the base resin being in molten state, it may easily pass through a gate by the deformation thereof even when the diameter of the particle is larger than that of the gate hole. After the granular resin has been injected into a mold, the particle is restored to its original shape, and a granular pattern is formed. Further, a back resin layer 4 is molded, and since its color is set so as to give a striking contrast to the color of the granular resin 3, the decorative effect can be effectively displayed.</p> |
