Print version of this available at Library. To request please e-mail to adminpk@usm.my and include a copy of this record in your e-mail.
This Malaysian Standard describes the test method to measure the environmental stress-crack resistance of containers, which is the summation of the influence of container design, resin, blow-moulding conditions, post treatment, or other factors that can affect this property. Three procedures are provided as follows:
1.1.1 Procedure A: Stress-crack resistance of containers commercial liquids
This procedure is particularly useful for determining the effect of container design on stresscrack
resistance or the stress-crack resistance of a proposed commercial package containing
a proprietary liquid product.
1.1.2 Procedure B: Stress-crack resistance of a specific container to polyoxyethylated nonylphenol, a stress-cracking agent
The conditions of test described in this procedure are designed for testing containers made from Type III polyethylene ASTM D 1248. Therefore, this procedure is recommended for containers made from Type III polyethylene only. This procedure is particularly useful for determining the effect of resin on the stress-crack resistance of the container.
1.1.3 Procedure C: Controlled elevated pressure stress-crack resistance of a specific
container to polyoxyethylated nonylphenol, a stress-cracking agent
The internal pressure is controlled at a constant elevated level.
1.2 These procedures are not designed to test the propensity for environmental stress cracking in the neck of containers, such as when the neck is subjected to a controlled strain by inserting a plug.
NOTES :
1. Under certain conditions of stress, and in the presence of environments such as soaps, wetting agents, oils, or detergents, blow-moulded polyethylene containers may exhibit mechanical failure by cracking at stresses appreciably below those that would cause cracking in the absence of these environments.
2. This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use. Specific precautionary statements are given in Clause 8 and the Note under 11.1.2.
MS 1582:2003 Method of test for environmental stress-crack resistance of blow-moulded polyethylene containers