Returnable container containing detergent, cleaning agent, disinfectant and/or preservative

• US 5,573,698 A
• Filed: 10/24/1994
• Issued: 11/12/1996
• Est. Priority Date: 02/14/1992
• Status: Expired due to Fees

• Current Assignee: Ecopack GmbH & Company
• Original Assignee: Ecopack GmbH & Company
• Inventors: Mandler, Gunter, Sander, Richard, Rieber, Wolfram, Kompan, J urgen
• Primary Examiner(s): Lieberman, Paul
• Assistant Examiner(s): Douyon, Lorna M.
• Application Number:
  US08/290,852
• Time in Patent Office: 750 Days
• Field of Search: 252/90, 252/91, 252/174, 206/503, 206/515, 206/524.1, 206/519, 220/770, 220/771
• US Class Current: 510/277
• 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: A61L 2/16 using chemical substances
• CPC Class Codes: A61L 2/26 Accessories or devices or components used for biocidal treatment
• 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
• CPC Class Codes: B65D 25/2882 Integral handles B65D25/2867 takes precedence
• CPC Class Codes: C11D 17/0047 Detergents in the form of bars or tablets
• CPC Class Codes: C11D 17/0065 Solid detergents containing builders C11D17/06 takes precedence
• CPC Class Codes: C11D 17/0073 Tablets
• CPC Class Codes: C11D 17/041 Compositions releasably affixed on a substrate or incorporated into a dispensing means
• CPC Class Codes: Y02W 30/80 Packaging reuse or recycling, e.g. of multilayer packaging bio-packaging Y02W90/10

Abstract

A product dispense package suitable for employment in washing machines, comprises a stackable product container which includes a unitary molded recyclable thermoplastic container body having a closed bottom end, an opposed open top end and an upwardly and outwardly angled upstanding peripheral side wall having a stacking angle of from about 2° to about 7° and contained therein a compact block of detergent, cleaning agent, disinfectant and/or preservative having a powdery structure. The bottom end includes an inwardly and upwardly directed dome-shaped region therein including a handle grip portion defined in an outwardly facing side of the dome-shaped region.

Claims

1. An environmentally sound product containing dispenser package comprising:

a product container including a unitary molded stackable container body having a closed bottom end, an opposed end, a releasable cover member for selectively closing the open end of the container body, an external thread connecting said container with said cover, and an upwardly and outwardly angled upstanding peripheral side wall having a stacking angle of from about 2°

to about 7°

extending between the bottom end and the open end, said container body defining a smooth, rounded, frusto-conical product receiving cavity having no undercut portions, said closed bottom end further including an inwardly and upwardly directed domed-shaped region therein including a handle grip portion defined in an outwardly facing side of the domed-shaped region opposite the product receiving cavity;

a known quantity of product disposed in the product receiving cavity, said product being a shaped block of a pre-moistened, compacted, finely-divided powder comprising an agent selected from the group consisting of detergents, cleaning agents, disinfectants, preservatives and mixtures of any of the foregoing, compacted under application pressures of between about 1×

10⁴ to about 1×

10⁶ Pa to provide a shaped block wherein powder structure is still recognizable; and

means for maintaining the product in the cavity in an open topped condition even upon inversion of the container body so that the open end faces downwardly, whereby the product dispenser package may be opened, inverted and loaded into a flushing chamber of a product dispenser apparatus without spilling and wasting the product and without causing human contact with the product, said product being fully removable on flushing contact with a flushing media sprayed into said open end to provide a residue free reusable, recyclable container.

2. A product dispenser package as defined in claim 1, wherein the product container comprises a unitary molded thermoplastic container body molded from a high grade dimensionally stable, UV-resistant and chemical resistant thermoplastic molding composition.

3. A product dispenser package as defined in claim 2, wherein the container body is molded from a thermoplastic polyolefin molding composition.

4. A product dispenser package as defined in claim 1, wherein the product comprises at least one agent selected from the group consisting of:

alkali metal hydroxides, alkali metal carbonates, alkali metal bicarbonates, alkali metal sulfates, alkali metal phosphates, silicates, surfactants, non-ionic surfactants, organic acids, polyols and alkali metal dichloroisocyanurates, and mixtures of any of the foregoing.

5. A product dispenser package as defined in claim 1, wherein the product further comprises a water soluble binder.

6. A product dispenser package as defined in claim 5, wherein the water soluble binder is selected from the group consisting of water and aqueous solutions or dispersions of one or more water soluble salts.

7. A product dispenser package as defined in claim 5, wherein the water soluble binder is selected from settable gel forming materials which are liquid when heated to temperatures above 40°

C. and which set at temperatures of from about 0°

C. to about 40°

C.

8. A product dispenser package as defined in claim 1, further comprising a sealing layer disposed on a top surface of the product adjacent the open end of the container.

9. A product dispenser package as defined in claim 8, wherein the sealing layer comprises a water soluble or water dispersible material which forms a solid or gel layer at temperatures of from about 0°

C. to about 40°

C.

10. A product dispenser package as defined in claim 8, wherein the means for maintaining the product in the container comprises a barrier layer disposed in and closing off the open end, releasably secured to the open end of the container body, the barrier layer being selected from the group consisting of water soluble films, water soluble preforms and non-water soluble foils and wherein the barrier layer is releasably secured to the open end by heat sealing, adhesive or mechanical securement methods.

11. A product dispenser package as defined in claim 1, wherein the means for maintaining the product dispenser in the package comprise compression loading of the product in the container body to provide a compacted shape-retaining mass of product.