SYMPOSIA PAPER Published: 01 October 1959

Anisotropic Effects in Testing Plastics


The anisotropy of some plastic articles, both in the mechanical and the optical senses, is well known in practice. These effects are related to the chemical structure of the material as well as to the mold design and manufacturing conditions. Standardized testing methods for examining anisotropy of plastics could provide designers and molders with more reliable data than hitherto. Examples are given of a technique for the measurement of anisotropy in different materials, and of the influence of molding conditions on anisotropy.

Author Information

Högberg, Hilding
Plastics Laboratory, Telefon Aktiebolaget L. M. Ericsson, Stockholm, Sweden
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Developed by Committee: D20
Pages: 95–114
DOI: 10.1520/STP44199S
ISBN-EB: 978-0-8031-5951-8
ISBN-13: 978-0-8031-6105-4