Rigid Packages

Rigid Package example

Rigid Packages generally refers to packages that will retain their shape when the product is not present. Examples include boxes, jars, bottles, corrugated shipping containers, and similar. One of the primary functions of a rigid package is to allow stacking of the package systems in order to utilize space more effectively in storage and, to a lesser extent, distribution. Based on this, one of the important test protocols conducted on rigid packages is a compression test. Two basic types are common: a) test to failure, and, b) test to a peak value. Both tests are conducted according to standards such as ASTM D-642.

Because the compression strength of paper based packages is dependent on the humidity level (and thus the board moisture content), a typical requirement of this testing is temperature and humidity conditioning conducted prior to the compression test. Other functions of a rigid package may be equally important including: impact resistance, protection from ultraviolet light, thermal protection, puncture resistance, product identification, product containment, ease of handling, and similar. Westpak is well-equipped to test rigid package systems against a variety of testing standards.