Plastic handle semi-shells to be riveted or screwed to knife tang include embedded injection-molded core, located at critical depth to prevent excessive shrinkage, warping, distortion, surface defects and costly finishing

摘要

The shell is injection-molded around a thermoplastic core. An Independent claim is included for the method of manufacture. The core is made first. Whilst still warm and/or not fully contracted, it is laid in a mold for the shell, to be largely surrounded by injected plastic.