METHODS AND APPARATUS FOR MAKING MOLDED OBJECTS, AND MOLDED OBJECTS MADE THEREFROM

摘要

Methods of making molded objects, such as composite ammunition casings for firearms, are disclosed. Apparatus for performing methods of making molded objects, such as composite ammunition casings for firearms, are also disclosed. Molded objects, such as composite ammunition casings for firearms, are further disclosed.

主权项

1. A method of making a composite ammunition casing, said method comprising:
overmolding a removable core mandrel with at least one polymer or polymer-forming material, the at least one polymer or polymer-forming material forming a polymer shell in contact with an outer profile surface of the removable core mandrel; and separating the removable core mandrel from the polymer shell to form the composite ammunition casing; wherein said separating step comprises (i) reducing a cross-sectional outer mandrel dimension of the removable core mandrel from an initial cross-sectional outer mandrel dimension domi to a final cross-sectional outer mandrel dimension domf so that the removable core mandrel passes through an internal opening within the polymer shell, the internal opening having a cross-sectional opening dimension do with domi>do≧domf.