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US 2023/0339663 A1Published application
Apparatus and process for making a water soluble pouch
AssigneeThe Procter & Gamble Company
InventorMiguel BRANDT SANZ
Life of this patent
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Abstract
An apparatus including a thermoforming mold having a forming surface; a plurality of spaced apart recesses in the forming surface, wherein each recess includes a vacuum orifice and each vacuum orifice is in fluid communication with a vacuum source; a continuous land area (250) surrounding the recesses, wherein portions of the land area between the recesses have an average roughness Ra from 2.2 μm to 10 μm.
Claims20
An apparatus comprising:
- a thermoforming mold having a forming surface;
- a plurality of spaced apart recesses in said forming surface, wherein each said recess comprises a vacuum orifice and each vacuum orifice is in fluid communication with a vacuum source;
- a continuous land area surrounding said recesses, wherein portions of said land area between said recesses have an average roughness Ra from 2.2 μm to 10 μm.
ng said apparatus according to claim 1;
- positioning a first water soluble film in facing relationship with said land area, wherein said first water soluble film comprises:
- from 50% to 95% by weight of said first water soluble film polyvinylalcohol polymer;
- from 5% to 50% by weight of said first water soluble film nonaqueous plasticizer;
- from 1% to 15% by weight of said first water soluble film water;
- and
- surfactant;
- wherein said first water soluble film has a thickness from 20 μm to 150 μm before said first water soluble film is positioned in facing relationship with said land area of said thermoforming mold;
- heating said first water soluble film;
- applying vacuum to said first water soluble film through said vacuum orifices to thermoform said first water soluble film to said recesses thereby forming a plurality of open pockets;
- placing a substrate treatment composition in said plurality of open pockets;
- positioning a second water soluble film above said first water soluble film;
- joining said second water soluble film and said first water soluble film thereby forming a web comprising a plurality of closed pouches;
- cutting said web to separate said closed pouches from one another;
- and
- separating said closed pouches from said forming surface.
12 more elements
A process for making water soluble unit dose pouches comprising the steps of:
Dependencies are inferred from the claim text.