NUCLEATED MOLDED ARTICLE, METHOD OF PRODUCING THE SAME, AND DEVICE FOR PRODUCING THE SAME

摘要

A method of producing nucleated molded articles efficiently at a time from a molding material such as powder, by using a compression molding means comprising a mortar and upper and lower pestles, at least the upper pestle, preferably both upper and lower pestles, being of double construction consisting of a center pestle and an outer pestle surrounding the outer periphery of the center pestle, both the center pestle and the outer pestle being slidable and operable for compression. This production method comprises the steps of feeding both a nucleus-forming molding material and an outer layer-forming molding material, compression-molding the nucleus-forming molding material and/or outer layer-forming molding material, and compression molding the complete nucleated molded article. Also provided is a rotary type compression molding machine which is used to embody the method. Also provided are various characteristic nucleated molded articles produced by the method, including one containing lots of microcapsules or the like or having a plurality of nuclei, which is a nucleus-incomplete molded article.