| 摘要 |
PROBLEM TO BE SOLVED: To produce a flooring material at low cost, which can hold water for a long period of time and show water permeability. SOLUTION: A long pin and a short pin are formed on an upper molding die, whereby the product can be produced in one cycle by the action of a guide board and a connecting rod. COPYRIGHT: (C)2008,JPO&INPIT
|
