| 摘要 |
PURPOSE:The titled plate-form foam excellent in packing applicability to a wooden frame structure and suitable for use as an insulation material for framehouses, prepared by expansion-molding high-density polyethylene into a foam having a specified apparent density, a specified average cell diameter and a specified shape. CONSTITUTION:A plate-form high-density polyethylene foam prepared by expanding high-density polyethylene of a density of 0.935-0.966g/cm<3> and melt index of 0.01-5.5g/10min so that the produced foam may have an apparent density of 0.007-0.1g/cm<3> and an average cell diameter of 0.05-3mm., wherein the end area is at least about 37.5cm<2>, the minimum sectional size is at least 1cm, and the ratio of the maximum sectional size to the minimum sectional size is at least 3.75. It is also possible to obtain a wider foam plate by uniting a plurality of the above plate-form foams 1 together by hot melting (symbol 2 is a part bonded by hot melting) at their end faces. |
