Importance

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Abstract

In a method of injection molding an elongated article, such as a cable tie, having a head and a strap terminating in a tip, (a) the article is formed by injecting molten plastic material, such as nylon, into a mold cavity defined between a first mold part and a second mold part, wherein the first mold part includes a head region defining a portion of the head of the elongated article, the second mold part includes a tip region defining a portion of the tip of the elongated article, and the portion of the mold cavity defined by the second mold part defines a series of pointed teeth on one side of the strap; (b) the first mold part is separated from the second mold part while retaining the portion of the head of the elongated article in the head region of the first mold part and the portion of the tip of the elongated article in the tip region of the second mold part, thereby separating the head from the second mold part, the tip from the first mold part, and a major portion of the strap of the elongated article from both the first and second mold parts; and (c) the first mold part is further separated from the second mold part while retaining said portion of the head of the elongated article in the head region of the first mold part to thereby remove the portion of the tip of the elongated article from the second mold part.

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First Claim