Flexible walled container for tableted or pelleted ware washing detergents

• US 5,759,501 A
• Filed: 11/15/1996
• Issued: 06/02/1998
• Est. Priority Date: 06/12/1995
• Status: Expired due to Fees

• Current Assignee: Diversey IP International BV
• Original Assignee: Diverseylever Incorporated (Unilever PLC)
• Inventors: Livingston, James, Bellon, Tiziano J., Wright, Donald, Roach, Kenneth James
• Primary Examiner(s): Warden, Robert J.
• Assistant Examiner(s): Moazzam, Fariborz
• Application Number:
  US08/749,834
• Time in Patent Office: 564 Days
• Field of Search: 422/266, 422/275, 220/372, 220/359, 215/232, 215/307, 215/308, 222/92, 222/107, 222/189.06, 222/210, 222/212, 134/93, 68/17 R
• US Class Current: 422/275
• CPC Class Codes: A47L 15/4436 in the form of a detergent solution made by gradually dissolving a powder detergent cake or a solid detergent block
• CPC Class Codes: B01F 21/22 using additional holders in conduits, containers or pools for keeping the solid material in place, e.g. supports or receptacles

Abstract

A container for institutional detergents, preferably tablets, includes a rigid large screened base and a flexible plastic film sidewall heat bonded to the peripheral surface of the base. The container is filled, preferably from its top portion, with tableted detergent and closed with a single heat seal along the top surface of the wall of the container. The screen surface is then closed with a removable, peel-off seal or removable cap. The upper portion of the container will include a handle which makes it easy to transport the container and place it into a dispenser for use. In use, a water nozzle will spray upwards onto the surface of the screen base through the holes in the screen, dissolving detergent and allowing the solution to pass downwardly to a drain, which directs it to a ware washing apparatus.

Claims

1. A detergent dispensing container comprising a generally rigid, self-supporting, planar screened base having a foraminous surface permitting fluid to flow down through said screened base;

a non-perforated side wall consisting of a flexible plastic sheet bonded to a peripheral edge of said base encircling said base;

an upper portion of said side wall sealed to itself to form an upper closed end of said container;

wherein said side wall is tapered from about 0 to about 400 relative to said screened base.

2. The container claimed in claim 1 having an said upper closed end, said closed end formed by a single seal traversing an upper portion of said plastic sheet, and wherein the container has a cross-section uniformly changing from a round cross-section at said screened base to a straight line at said closed end.

3. The container claimed in claim 2 containing a tableted detergent composition.

4. The container claimed in claim 3 wherein said closed end includes a handle.

5. The container claimed in claim 4 wherein said handle is formed from said plastic sheet.

6. The container claimed in claim 1 wherein said base includes a water inlet which projects water along the surface of said base.

7. The container claimed in claim 4 wherein said plastic sheet includes two angled side seams.

8. The container claimed in claim 2 wherein the side wall of said container is tapered from said screened base to said upper portion at an angle from about 5 to 20 degrees.

9. A detergent dispenser in combination with the container claimed in claim 8, said dispenser having a base support and a water jet adapted to spray water through said screened base to dissolve detergent in said container, said screened portion resting on said base support, wherein the diameter of the screened base of said container is 30% to 70% of an internal diameter of said dispenser.

10. A detergent dispensing container comprising a generally rigid, self-supporting, planer screened base having a foraminous surface permitting fluid to flow down through said screen base;

a non-perforated side wall consisting of a flexible plastic sheet bonded to a peripheral edge of said base, encircling said base;

an upper portion of said side wall sealed to itself to form an upper closed end of said container;

wherein said side wall is tapered from about 0°

to 40°

relative to said screened base;

powdered detergent contained in said container;

and wherein said base has a size relative to the maximum cross-sectional area of said container effective to prevent bridging of said detergent as it is being dispensed.