Tube dispenser capable of creating a suckback effect in the nozzle
AssigneeColgate-Palmolive Company
InventorKai Sun
Life of this patent
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Abstract
The tubes of this invention are deformable and will usually not be collapsible. The tubes have a view window and a elongated nozzle. The tubes can be made by blow molding or extrusion. The view window permits a person to determine the contents remaining in the tube and the nozzle provides for ease in dispensing.
Claims10
A tube dispenser comprising a continuous tube portion, a conical shoulder on one end of said tube portion and the other end of said tube portion being closed, said shoulder having a nozzle which extends away from said tube portion and having an aperture to deliver substances being dispensed from said tube, the ratio of the height of said nozzle to the diameter of said aperture being from about 1:1 to 10:1, the continuous tube portion having a multilayer structure with sufficient memory such that when the tube portion is compressed to deliver a product the tube portion rapidly regains its original shape upon the release of compression on the tube portion to thereby create a suckback to draw product in the nozzle opening downwardly at least about 0.3 cm, said multilayer structure comprised of an inner moisture barrier layer having a thickness of about 75 microns to 200 microns, an organic barrier layer having a thickness of about 15 to 40 microns and an outer protective layer having a thickness of about 200 to 400 microns, said outer protective layer being a low density polyethylene layer having a high density polyethylene content of up to about 50 percent by weight.
Dependencies are inferred from the claim text.