申请人:Pechiney Plastic Packaging, Inc.
公开号:US20030027008A1
公开(公告)日:2003-02-06
Copolymers of ethylene and alpha olefins that have been formed by the polymerization reaction in the presence of a single site catalyst, such as a metallocene, are used to form collapsible dispensing containers and/or components thereof. Blends of the copolymers with propylene polymers are disclosed and used to form a body wall layer or a collapsible dispensing container head having good bond strength with a body wall layer formed of an ethylene polymer. Methods for improving the adhesion between collapsible dispensing container components, such as between body wall layer formed of an ethylene polymer and another body wall layer formed of a propylene polymer, or between a body wall layer formed of an ethylene polymer and a collapsible dispensing container head formed of a propylene polymer, are also disclosed.
乙烯和α-烯烃的共聚物是在单位点催化剂(如茂金属)存在下通过聚合反应形成的,可用于形成可折叠的点胶容器和/或其部件。公开了共聚物与丙烯聚合物的混合物,用于形成与乙烯聚合物形成的体壁层具有良好粘合强度的体壁层或可折叠分配容器头。此外,还公开了改善可折叠点胶容器部件之间粘合力的方法,例如乙烯聚合物形成的体壁层与丙烯聚合物形成的另一体壁层之间的粘合力,或乙烯聚合物形成的体壁层与丙烯聚合物形成的可折叠点胶容器头之间的粘合力。