Barrier tube shoulders
AssigneeColgate-Palmolive Company
InventorsJun Wang, Christopher J. Miller, Scott Beckerman, Sunil Shah
Life of this patent
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Abstract
Provided is a method for making barrier tube shoulders. The method includes forming a parison from a multi-layer laminated structure having an inner layer that faces an interior of the parison, an outer layer comprising an exterior surface of the parison, and an interdisposed layer between the inner layer and the outer layer, wherein the interdisposed layer is a flavor barrier layer. The method also includes providing an extrusion blow molding (EBM) mold comprising at least one cavity shaped as a barrier tube shoulder, positioning the parison in the EBM mold, and blow molding the parison such that the parison substantially conforms to the EBM mold to form a barrier tube shoulder having the barrier layer.
Claims17
A method for making barrier tube shoulders, comprising:
- forming a parison from a multi-layer laminated structure having an inner layer that faces an interior of the parison, an outer layer comprising an exterior surface of the parison, and an interdisposed layer between the inner layer and the outer layer, wherein the interdisposed layer is a flavor barrier layer;
- providing an extrusion blow molding (EBM) mold comprising at least one cavity shaped as a barrier tube shoulder;
- positioning the parison in the EBM mold;
- and
- blow molding the parison such that the parison substantially conforms to the EBM mold to form at least one barrier tube shoulder having the barrier layer, and
- wherein the EBM mold further comprises at least one spacer-shaped cavity, and wherein blow molding the parison such that the parison substantially conforms to the EBM mold also forms a spacer wall structure.
Dependencies are inferred from the claim text.