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    • 54. 发明授权
    • Method of manufacturing a foam
    • 制造泡沫的方法
    • US08313682B2
    • 2012-11-20
    • US12900822
    • 2010-10-08
    • Matteo BianchiFabrizio Scarpa
    • Matteo BianchiFabrizio Scarpa
    • B29C33/58B29C67/20
    • B29C44/5636B29C44/357B29K2105/045B29K2995/0002
    • A method of manufacturing a foam having a negative Poisson's ratio comprising the steps: placing a pad 12 of open cell polyurethane foam on a moulding surface 4; placing a flexible membrane 18 over the exposed surface of the foam to create a sealed chamber 20 between the moulding surface 4 and the flexible membrane 18 in which the foam pad 12 is disposed; applying an isostatic pressure difference between the inside and the outside of the chamber 20 thereby collapsing the foam pad 12 between the flexible membrane 18 and the moulding surface 4; heating the foam pad 12 to a predetermined temperature, and subsequently cooling the foam pad 12 while collapsed.
    • 制造具有负泊松比的泡沫的方法包括以下步骤:将开孔聚氨酯泡沫的垫12放置在成型表面4上; 将柔性膜18放置在泡沫的暴露表面上,以在模制表面4和柔性膜18之间形成密封腔20,在该柔性膜18中布置泡沫垫12。 在室20的内部和外部之间施加等静压差,从而使泡沫垫12在柔性膜18和成型表面4之间塌缩; 将泡沫垫12加热到预定温度,随后在泡沫垫12折叠的同时冷却泡沫垫12。