PURPOSE: To make it possible to store a large number of folded blanks in well balanced manner by using merely a simple structure and not requiring to provide a blank turning mechanism or a blank inverting mechanism.
CONSTITUTION: A blank storage tray 20 has a tray base 21 which has a flat surface. The tray base 22 is provided with a step part 22 on its top. The step part 22 has it font part 22b made high while the rear part 22b made low and a flat slant surface 23 is formed between the front part 22a the rear part 22b. A thick folded side 14a part of a blank 14 is supported by means of the first blank supporting part 24 of the tray base 21 while a thin folded side 14b part of the blank 14 is supported by means of the second blank supporting part 25 of the step part 22.
HARA MASAHIKO
KANAZAWA YUKIO
TAKEI TADASHI
