Patent ID: 7578040
Filing Date: 2009-08-25
Classification: B29C,B29L,B65B,B65D,Y10T

Abstract:
1. A process for assembling a plastic spout that defines a spout opening to a neck portion defined by a side wall with a surface that extends substantially perpendicular to a plane defined by a neck opening in the neck portion, wherein said spout comprises a skirt for extending around the outside surface of the side wall of the neck portion, wherein the skirt, when operatively positioned about the outside surface of the neck portion, has a skirt length that extends from the plane defined by the neck opening to a skirt edge that is adjacent to the neck portion and separated from the plane defined by the neck opening by a distance that is greater than the thickness of the skirt, wherein the side wall being made of or coated with a first plastic material, wherein the spout contains a foil that closes the spout opening in the spout, the foil having a first exposed face coated with a second plastic material compatible with the first plastic material and a second face that is coated with a third plastic material, the process comprising the steps of: placing the spout with the foil that closes the spout opening of the spout on the neck portion that is defined by the side wall; and welding a portion of the exposed first face of the foil that is coated with the second plastic material to the first plastic material associated with the surface of the side wall that is substantially perpendicular to the plane defined by the neck opening in the neck, wherein the resulting weld extends for a weld length that is a substantial portion of the skirt length and is subjected to a shear force during opening of the foil.