公开(公告)号：US4160074A

公开(公告)日：1979-07-03

申请号：US872678

申请日：1978-01-26

申请人： Hiroshi Komada ,  Kuniyasu Nakamura ,  Ryoichi Miyagaki

发明人： Hiroshi Komada ,  Kuniyasu Nakamura ,  Ryoichi Miyagaki

IPC分类号： B29C33/30 ,  B29C44/58 ,  C08J9/00

CPC分类号： C08J9/00 ,  B29C44/10 ,  B29C44/586 ,  B29C33/30 ,  B29K2075/00 ,  C08J2375/04 ,  Y10S264/84

摘要： A polyisocyanate foam having isotropic cells is manufactured by a foaming operation in an apparatus comprising a mold composed of side walls capable of extending and returning, or folding and unfolding, in directions perpendicular to the free rising direction. Mold extending means are provided to spread out the side walls of the mold perpendicular to the free rising direction. While the foamable composition is in a creamy state, it is allowed to rise freely in one direction (the free rising direction), while the side walls of the mold are in their folded condition, until a height detecting means is actuated. Then the side walls of the mold are unfolded to enlarge the cross-sectional area of the mold so that the foamable composition is then permitted further to expand freely in directions perpendicular to the initial free rising direction, until the foamable composition is transformed from the creamy state to the tack-free state, whereby a polyisocyanate foam product having essentially spherical isotropic cells is obtained.

摘要翻译： 具有各向同性电池的多异氰酸酯泡沫体通过发泡操作在包括由能够在垂直于自由上升方向的方向上延伸和返回或折叠和展开的侧壁构成的模具的装置中制造。 提供模延伸装置以垂直于自由上升方向展开模具的侧壁。 当可发泡组合物处于乳状状态时，允许其在一个方向（自由上升方向）上自由上升，同时模具的侧壁处于折叠状态，直到高度检测装置被致动。 然后模具的侧壁展开以扩大模具的横截面积，从而允许可发泡组合物进一步在垂直于初始自由上升方向的方向上自由扩张，直到可发泡组合物从奶油状 状态为无粘性状态，由此获得具有基本上球形各向同性电池的多异氰酸酯泡沫产品。