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US 12,508,761 B1Granted
Laminate webs and absorbent articles having the same
AssigneeThe Procter & Gamble Company
InventorPietro Cecchetto
Life of this patent
Estimating the term…
Abstract
A laminate web having a polymer film layer and a nonwoven layer is disclosed. The polymer film layer makes up a first side of the laminate web and the nonwoven layer makes up a second side of the laminate web. The laminate web has a plurality of first elements extending from the polymer film. The web also has a plurality of second elements such as recesses, protrusions, apertures, embossing and combinations thereof.
Claims15
A method for making an extrusion coated, apertured nonwoven web, comprising:
- providing a carded nonwoven layer;
- extruding a molten polymeric film layer having a basis weight between about 7 and about 17 gsm;
- reducing the temperature of the extruded molten polymer film to a semi-molten temperature to make a semi-molten polymer film, wherein the semi-molten temperature is between 70% and 99% of a melt point of the polymer film;
- contacting the semi-molten polymer film with the nonwoven layer having a basis weight between about 9 and about 40 gsm, wherein the fibers of the nonwoven layer are partially connected to the polymer film without imbedding into a depth of the polymer film;
- aperturing said semi-molten polymer film through heat and pneumatic pressure differential to create a plurality of first elements comprising microperforations therein at a density of between about 35 and about 120 perforations per 2.54 linear centimeters (1 linear inch) to provide a microperforated nonwoven web;
- and
- forming a plurality of discrete second elements in the microperforated nonwoven web, wherein the second elements are at least one of recesses and protrusions, wherein each of the discrete second elements is surrounded by a land area, wherein each of the second elements include at least two of the microperforations, and wherein at least one of the microperforations included in each of the second elements has an open distal end that is at least 1.5 times larger than the largest distal open end of any microperforations located in the land area.
4 more elements
A method for making an extrusion coated, apertured nonwoven web, comprising:
- hydroentangling fibers of a nonwoven layer having a basis weight between about 9 and about 40 gsm;
- extruding a molten polymeric film layer having a basis weight between about 7 and about 17 gsm;
- reducing the temperature of the extruded molten polymer film to a semi-molten temperature to make a semi-molten polymer film, wherein the semi-molten temperature is between 70% and 99% of a melt temperature of the polymer film;
- contacting the semi-molten polymer film with the nonwoven layer, wherein the fibers of the nonwoven layer are displaced greater than 25% of a depth of the polymer film;
- and
- aperturing said semi-molten polymer film through heat and pneumatic pressure differential to create a plurality of first elements comprising microperforations therein at a density of between about 35 and about 120 perforations per 2.54 linear centimeters (1 linear inch) to provide a microperforated nonwoven web;
- and
- forming a plurality of discrete second elements in the microperforated nonwoven web, wherein the second elements are at least one of recesses and protrusions, wherein each of the discrete second elements is surrounded by a land area, and wherein each of the second elements include at least two of the microperforations, and wherein at least one of the microperforations included in each of the second elements has an open distal end that is at least 1.5 times larger than the largest distal open end of any microperforation located in the land area.
5 more elements
Dependencies are inferred from the claim text.