Middle plate for packing disk for record

摘要

(57) Abstract Objective As a middle plate for packing disk for record, BTo the middle plate by the zu foaming item, question of the curvature and pulverized adhesionThose which do not have a possibility subject occurring, damaging the disk profitru. Constitution It makes the synthetic resin foaming board by beads foamingThe te, the middle plate 1 which formed the radial channel 4 in the inside and outside both sidesIt does. Advantages Thickness is driven out, precision be able to form uniformly well, addingThere is no possibility of the pulverized adhesion with manufacture, furthermore as the wholeBecause containment flat Characteristic satisfactorily, between the disks the openingWithout making occur, be able to lie between and be able to use, conservation of the disk satisfactorilyIt is not it can.