| 摘要 |
PURPOSE:To obtain a foamed polymer body which is excellent in both of water permeability and a mutual fusion-bonded strength of foamed bodies, has stable physical properties and can be manufactured economically. CONSTITUTION:A foamed polymer body having gaps is molded of foamed chips 1 being fusion-bonded mutually and has gap parts communicating with one another. The material breakage rate of the fracture surface of the foamed polymer body on the occasion when a test piece obtained from the molded body and having a length, a width and a height of 3cm, 3cm and 3cm or over respectively is subjected to a tensile break at a rate of pulling of 500mm/min in the longitudinal direction thereof is 20% or above in each of the three directions of the length, the width and the height of the molded body, and the water permeability constant thereof is 1.0X10<-2> to 9.0X10<-2>(cm/sec). |
