BLOW MOLDED POLYESTER CONTAINER WITH AN OVER-MOLDED THERMOPLASTIC LAYER

摘要

The invention is directed to polyester containers that are produced from polyester preforms, the preforms preferably having a thermoplastic over-mold layer on at least a part of the exterior surface of the preform. The preform is made by over-molding the thermoplastic layer onto the preform surface in one or more over-molding operations. In a single over-molding embodiment the preform has a body layer of a first color and the over-molded layer of a second color. The over-mold layer can have a thickness gradient varying in thickness from one end of the preform to adjacent another end of the preform. This will give the blow molded container a unique appearance where there the container will be substantially transparent or of a first color and the over-mold layers of differing colors. The over-mold layers can have a thickness and color gradient. A third color will result from the blending of the first color and the differing colors of the over-mold layers where the first color and the differing colors can both be perceived. There can result only a first color at one end and a second color at another end with a third color varying blend intermediate between the one end and the another end. The color of the contained liquid can also add to the color mixing when the container is substantially transparent.