MINIMUM MOTHER MOLD STRUCTURE PIN AND ITS MANUFACTURING METHOD, MOLD MANUFACTURING METHOD USING THE PIN, AND MICRO PRISM REFLECTION SHEET

摘要

PROBLEM TO BE SOLVED: To form a prism aggregate surface which is high in prism angle precision and good in specular properties. SOLUTION: A minimum mother mold structure pin 1 has a rod 3 and a triangular cone type prism part 5 formed at one end of the rod 3. The pins 1 are arranged to form the mother mold of a mold for producing a micro prism reflection sheet. The shape of a prism can be changed in each minimum mother mold structure pin 1, and a method for arranging the pins 1 can be changed variously. COPYRIGHT: (C)2006,JPO&NCIPI