公开(公告)号：US4287262A

公开(公告)日：1981-09-01

申请号：US99146

申请日：1979-11-30

申请人： Forest Engelhard ,  Rainer Kuhn ,  Wichard Pump ,  Reinhard Riess ,  Hugo Streib

发明人： Forest Engelhard ,  Rainer Kuhn ,  Wichard Pump ,  Reinhard Riess ,  Hugo Streib

IPC分类号： C08F10/00 ,  B29B7/00 ,  B29C47/00 ,  C08F2/02 ,  C08F10/02 ,  C08F110/02 ,  B32B15/08

CPC分类号： C08F10/02 ,  C08F110/02 ,  Y10T428/31692 ,  Y10T428/31696 ,  Y10T428/31938

摘要： Laminate systems with improved bond strength prepared by coating of flexible substrates with low density polyethylene and a process for preparing said laminate systems are claimed which are characterized in that a polyethylene is used as a coating resin, which is obtained if(a) two autoclaves are connected in series such that all the reaction product of the first reactor is transferred to the second reactor,(b) a length-/diameter ratio (L/D) of 1:1 to 3:1 is chosen for each autoclave,(c) the monomer feed stream is distributed between the two reactors such that the monomer feed stream to the first reactor is the same as or greater than the monomer feed stream to the second reactor,(d) the reaction temperatures in the two autoclaves are adjusted such that the reaction temperature in the first reactor is lower than the reaction temperature in the second reactor,(e) the initiator chosen for the first reactor is the same as or different from the initiator chosen for the second reactor, and which has a density of 0.915 to 0.930 g/cm.sup.3 and a melt index (190.degree. C./2.16 kp) of 0.2 to 20 g/10 minutes is employed as the coating resin.

摘要翻译： 要求保护具有通过用低密度聚乙烯涂覆柔性基底而制备的具有改善的粘结强度的层压体系以及制备所述层压体系的方法，其特征在于使用聚乙烯作为涂层树脂，如果（a）两个高压釜是 串联连接，使得第一反应器的所有反应产物转移到第二反应器，（b）每个高压釜选择长度/直径比（L / D）为1:1至3:1，（c ）单体进料流分布在两个反应器之间，使得到第一反应器的单体进料流与第二反应器的单体进料流相同或更大，（d）将两个高压釜中的反应温度调节为 第一反应器中的反应温度低于第二反应器中的反应温度，（e）为第一反应器选择的引发剂与为第二反应器选择的引发剂相同或不同， 其密度为0.915〜0.930g / cm3，熔融指数（190℃/2.16kp）为0.2〜20g / 10分钟。