To improve a rigidity without increasing weight and to prevent the deformation or break of a caddie bag by applying a pseudo cylindrical cryptoporous polyhedron structure in a core material for the caddie bag.
The English capitals expressing a pseudo cylindrical cryptoporous polyhedron are adopted in a PCCP structure 2 and the caddie bag 1 is formed by using the core material with the PCCP structure 2. At the time of producing it, a synthetic resin sheet with the PCCP structure 2 is prepared and the core material 3 for the caddie bag consisting of the synthetic resin sheet with the PCCP structure 2 is made to be cylindrical, sewed and inserted to a skin material where a back bag and pockets are sewed. Then, a mouth frame part and a bottom part are sewed with the cylindrical skin material and the core material 3 so as to complete it as the caddie bag 1. Thus, it is designed with the high rigidity in the center axial direction of the cylinder while suppressing the increase of weight in the caddie bag as much as possible.
YOSHIDA SATOSHI
IWATA MOTOTAKA
