| 摘要 |
PURPOSE:To make exhaust air loss extinct, shorten air releasing time, and improve productivity by disposing core foam of minute foaming skeleton and space foam of coarse foaming skeleton in a sealed container with an air releasing valve. CONSTITUTION:Spacer foam 9 made of hard urethane foam obtained by mixing 5.0-8.0 weight parts of bivalent metallic salt of powder unsaturated monocarboxylic acid into 100 weight parts of polyol and foaming this mixture as a bubble communicating agent is disposed at the inner surface of a sealed container 7 with an air releasing valve 8 as an air releasing passage, and further inside, core foam 10 made of hard urethane foam obtained by mixing 0.1-5.0weight parts of bivalent metallic salt of powder saturated monocarboxylic acid into 100weight parts of polyol and foaming this mixture as a bubble communicating agent is disposed, and after being sealed, released through the air releasing valve so as to obtain an insulating body 1. As a result, extra exhaust air other than that in the insulating body is extinct, air releasing time is shortened, and productivity is improved. |
