Correlation of peel and burst tests for pouches

Abstract

Theoretical equations based on force diagrams were developed in order to explain pouch behaviour during a restrained burst test. According to the resulting equation, P = 2 S/D, the burst pressure (P) increases directly with seal strength (S) and inversely with the distance between the restraining plates (D). After performing a restrained burst test and a peel test on Tyvek/plastic pouches, it was found that the theoretical development did not exactly explain burst test results in terms of peel test values. The test results demonstrate that even though the peeling times for the peel and burst tests were controlled to be the same, the theoretical formula (P = 2 S/D) tends to overestimate the burst pressure. The overestimation increases at smaller gaps. These results are an indication that the formula is not universal and they suggest that it is an oversimpli®cation. It might work for some materials at a particular set of testing conditions but not for others.

Assessment of Microscale Test Methods of Peeling and Splitting along Surface of Thin-Film/Substrates

“…obtaining from (2). The moment and force acting on the section 1 will be equivalently replaced by a linear distributed traction.…”

“…It has received considerable attention in the past several decades, and continues to be the subject of intense scrutiny in a wide range of research areas [1,2]. Most mechanical applications are used to measure the interfacial toughness for such a film/substrate system.…”

Modeling nonlinear peeling of ductile thin films––critical assessment of analytical bending models using FE simulations

“…In order to check the adhesion property and separation strength between a thin film and a substrate, a simple test method, called peel test, was designed 50 years ago by Spies (1953). Due to simplicity of the test method to be operated, the peel test has been widely applied in many research areas (Feliu-Baez et al, 2001;Choi and Oh, 2001;Asai et al, 2001;Bundy et al, 2000;Kawabe et al, 2000). Specifically, when both the thin film and the substrate can be considered as elastic materials, the interfacial adhesion properties (adhesion toughness) can be obtained directly by measuring the peel force.…”

Solutions and Discussions of thin film Undergoing the Nonlinear Peeling

“…In order to evaluate the adhesion behaviors, a simple test method, peel test, was designed in fifty years ago [1]. Due to the good advantages of the test method, such as simply operating, the test method has been widely applying to many research regions [2][3][4]. Specifically, when both the thin film and substrate are elastic materials, the interfacial adhesion toughness can be obtained through directly measuring peeling force in peel test.…”