US 6,607,097 B2 · Collapsible bag for dispensing liquids and method

Abstract

A collapsible bag for dispensing liquids which includes at least one sheet sealed to define an enclosure and a fitment (spout) attached to the enclosure and out through which liquid in the enclosure is dispensed. An interior surface of the one or more sheets has integral texture to assist in withdrawal of the liquid from the enclosure when collapsed. The texture can be provided by sheet surfaces that are mechanically or ultrasonically embossed or are bubble-cushioned or which have sealed pleats or accordion folds. The bottom surface of a lower flange of the fitment may have concentric ridges (or spirals) and/or radial grooves. Also disclosed are methods of making the bag from one, two, three or four sheets.

Claims7

Dependent claims

A method of withdrawing fluid from a container comprising:

providing a container comprised of single layer flexible walls, wherein the single layer flexible walls have a laminate construction;
urging fluid out of the container through a spout on said container;
allowing said flexible walls of said container to move inwardly during flow of said fluid through said spout;
and,
directing fluid towards said spout along fluid pathways pressed into the internal surfaces of said flexible walls of said container, wherein the fluid pathways on opposing internal surfaces do not interlock.

2 more elements

Dependencies are inferred from the claim text.

Facts

Application

10/108,117Filed 25 Mar 2002 · continuation

Priority

10 Nov 1999

Published

US 2002/0148857 A117 Oct 2002

Granted

19 Aug 2003

Term ends

Not estimatedThe source records don’t support an estimate.

Classification3 codes

B65D 75/5877
Non-integral spouts: connected to a planar surface of the package wall
B65D 2231/002
The container being a bag: comprising strips forming channels or liquid passageways
B65D
Containers for storage or transport of articles or materials

Collapsible bag for dispensing liquids and method

Life of this patent

Collapsible bag for dispensing liquids and method

Life of this patent

Abstract

Claims7