Conformability is a property of materials that allows them to conform to the contours of a curved or rough surface. The lack of conformability of a thin plastic film lying on a non-flat substrate is commonly manifested in formation of blisters, wrinkles and other forms of delamination. The delamination is driven by elastic energy of thin film associated with the film deformation required by film application. A simple method of observation and quantitative characterization of delamination and its evolution in time is proposed. The time dependency of delamination is driven by an interplay between the stress relaxation within the film and viscous flow of adhesive. Thus, the conformability of multilayer system is controlled by the stiffness and relaxation characteristics of the film as well as the time dependent strength of adhesive. A methodology of testing the conformability and measurements of delamination growth, as well as quantitative modeling of the process are presented.

适形性是材料的一种属性，它允许它们与弯曲或粗糙表面的轮廓相符。通常在形成水泡，皱纹和其他形式的分层中表现出不平整的塑料薄膜在非平坦基材上的顺应性不足。分层是由薄膜的弹性能驱动的，薄膜的弹性能与涂膜所需的膜变形有关。提出了一种观察和定量表征分层及其随时间演变的简单方法。脱层的时间依赖性是由薄膜内的应力松弛和粘合剂的粘性流之间的相互作用驱动的。因此，多层系统的顺应性由薄膜的刚度和松弛特性以及随时间变化的粘合剂强度控制。