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US 12,331,267 B2Granted
Methods for making unit dose articles
AssigneeThe Procter & Gamble Company
InventorsAleksey Mikhailovich Pinyayev, Travis Kyle Hodgdon
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Abstract
A method for forming an object includes steps of forming a non-woven mat from one or more strands of meltable material and subsequently forming discrete units from the non-woven mat where portions of the surface of the formed discrete units are locally densified.
Claims13
A method for forming an object, the method comprising:
- providing semi-solid strands of a meltable material having a diameter of between about 0.5 and about 2 millimeters;
- embedding from about 0.00001 to about 0.2 millimeter particles in the meltable material to form strands of meltable material comprising particles;
- forming a non-woven mat comprising the strands of meltable material wherein the strand contains a filler particle comprising a D50 from between about 0.1 microns and about 200 microns;
- forming discrete units of the non-woven mat into a shape;
- applying a compressive force to a portion of the discrete units' surface to locally densify that portion of the surface of the discrete units, so that the discrete units have a shell-core structure with a density gradient between the shell and the core, wherein the shell differs from the core by having a greater density than the core of the article;
- and curing the discrete units of the non-woven mat by cooling.
3 more elements
Dependencies are inferred from the claim text.