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2. 发明公开

EP0299117A1 Method and apparatus for the moulding of articles in polyurethane 失效
标题翻译： Verfahren und Vorrichtung zum Formen von Polyurethan-Gegenständen。
公开(公告)号：EP0299117A1
公开(公告)日：1989-01-18
申请号：EP87202400.5
申请日：1987-11-23
申请人： GUSBI Officina Meccanica S.p.A.
发明人： Gaud, Raoult Marie , Terenzio, Bianchi
IPC分类号： B29C67/22 , B29C43/54
CPC分类号： B29C43/02 , B29C44/10 , B29K2075/00
摘要： A method for the production of articles moulded in polyurethane, in particular in compact and semi-compact polyurethane.
According to the invention, the polyurethane mixture is compressed directly in the mould cavity (13) from a moment (Tx) chosen in the time interval between the end of the feeding phase of the mixture into the mould (11) and the instant in which a filament may be formed in the polymerization process of the polyurethane material (24), during which the polyurethane material (24) is in a transitional condition between liquid and solid states.
In the above way, moulded articles with well-defined markings and free from defects due to eventual surface air-bubbles are obtained.
摘要翻译：用于生产在聚氨酯中成型的制品的方法，特别是在紧凑和半紧凑的聚氨酯中。根据本发明，聚氨酯混合物从混合物的进料阶段的末端到模具（11）中的时间间隔中选择的瞬间（Tx）直接压缩在模腔（13）中，其中在聚氨酯材料（24）的聚合过程中可以形成长丝，在此过程中聚氨酯材料（24）处于液态和固态之间的过渡状态。以上述方式，得到具有良好限定标记并且由于最终表面气泡而没有缺陷的模制品。

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