Injection molding

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• Published Subscription Review Article Special issue 22 Aug 2025

  Polymer Chemistry-Driven Design of a Severable Dental Prophylaxis Instrument: Leveraging PEEK and Composites for Enhanced Functionality

  By Girish Suragimath, Aishwarya Achari, Siddhartha A. Varma, Sameer A. Zope, Ashwinirani S.R.

  Abstract: Polymer chemistry unlocks new possibilities for dental prophylaxis instruments by leveraging molecular design for enhanced functionality. This study explores Polyether Ether Ketone (PEEK), a semi-crystalline thermoplastic, in a novel instrument with a severable working end, featuring a tubular structure with internal screw threads (0.5–0.8 cm) anchoring replaceable elements via a threaded mechanism. PEEK’s aromatic backbone, alternating ether and ketone groups, yields a tensile strength of ~100 MPa, chemical inertness against …

  Published in Journal of Polymer & Composites · Vol. 13, Issue 6, 2025 · pp. 869–877 Read article →

• Published Open access Original Research Special issue 15 Jan 2024

  The effect of cooling time and colorant pigment on the dimensional accuracy of plastic injection molded closure

  By John K. Njagi, Steven O. Otieno, Fredrick M. Mwema, Peter N. Muchiri

  Abstract: Dimensional accuracy is a critical aspect of precision injection molding, with the products generally required to conform to set tolerances. Major causes of these deviations are reported to be related to the polymer material, part geometry, injection mold design, and process parameters. This study investigated the effects of material color pigment and its interaction with process cooling time on product dimensional accuracy. This study was conducted experimentally, where three levels …

  Published in Journal of Polymer & Composites · Vol. 11, Issue 12, 2023 · pp. 93–100 Read article →