Dome seal for container ports

Details Dome seal for container ports Dome seal for container ports

A - Human Necessities

61

M

210/47

A61M 5/14 (2006.01) A61J 1/05 (2006.01) B29C 57/10 (2006.01) B29C 65/06 (2006.01) B29C 35/02 (2006.01)

Patent

CA 1195657

Abstract of the Disclosure Container bags for intravenous solution of one piece, blow-molded construction typically have a fill port or tube and at least an administration port in one end of the container bag. A method, an apparatus and an article of manufacture are provided where a fill port or tube on a polyolefin or other plastic container bag is sealed into a dome shape where the solid wall, dome-shaped material closing the port or tube effects the seal. The method provides for sealing the open end of a thermoplastic tube or port by using respectively hot and cold dies. Resistance of the tube or port to forming a seal at adjoining interfaces is overcome by rotating at least one of the dies. Disruption and mix- ing of the plastic at the interface or closure line is accomplished, forming a substantially homogenous mass which seals the port opening.

428981

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