| 摘要 |
PURPOSE: A mixing hopper is provided to open door formed inside a hopper from one side in order, thereby forming a surface layer part having mixed various colors. CONSTITUTION: A manufacturing method of a multi-color block using a mixing hopper comprises: a step of putting a composition for a base layer part in, mixing, and transferring to a hopper; a step of putting a composition for a surface layer part having various colors into one or more mixers, and mixing; a step of transporting to the top of a mixing hopper, laminating per color, and opening a door from one side; a step of preparing the input of mixture by transferring the laminated color mixture with mixing from each other; a step of opening the hopper, putting a mixture for the base layer part into a conveyor, and transferring to a molder; a step of molding a block of the base layer part by firstly compression molding in the molder; a step of opening the mixing hopper, putting a mixture for the surface layer part into the conveyer, and transferring to the molder; a step of positioning the mixture on the top of the base layer part, and forming a multi-color block by secondly compression molding.
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