Method of manufacturing an activated composite web and an activated composite web for absorptive devices
A method of manufacturing an activated composite web includes laminating a film layer to a nonwoven web to form a composite web, forming a plurality of apertured protuberances in the film layer, and passing the composite web through intermeshing elements to form an activated composite web. The intermeshing elements form a plurality of first lanes, with first widths, substantially unaffected by activation, and a plurality of second lanes, with second widths. The second widths are less than the first widths. Portions of the plurality of apertured protuberances define first apertures in the first lanes and second apertures in the second lanes. The cross-sections of the second apertures are larger than the first apertures. The first apertures have their major axes substantially aligned in the first direction while the second apertures have their major axis substantially aligned in the second direction. An activated composite web also is provided.
1. A method of manufacturing an activated composite web, comprising:
laminating a film layer to a nonwoven web to form a composite web;
forming a plurality of apertured protuberances in the film layer with a pin punching unit; and
passing the composite web through intermeshing elements to form an activated composite web, the intermeshing elements being constructed and arranged to form a plurality of first lanes substantially unaffected by activation aligned in a first direction and having a first width in a second direction substantially perpendicular to the first direction, and a plurality of second lanes aligned in the first direction and having a second width less than the first width in the second direction in the activated composite web,
wherein a first portion of the plurality of apertured protuberances forms a plurality of first apertured protuberances having a plurality of corresponding first apertures with first cross-sectional areas, the first apertured protuberances being located in the first lanes, and a second portion of the plurality of apertured protuberances forms a plurality of second apertured protuberances having a plurality of corresponding second apertures with second cross-sectional areas, each of the second cross-sectional areas being larger than each of the first cross-sectional areas, the second apertured protuberances being located in the second lanes, and
wherein each of the first apertures has a first major axis substantially aligned in the first direction, and each of the second apertures has a second major axis substantially aligned in the second direction.
2. The method according to claim 1 , wherein the film layer has a basis weight of between about 6 gsm and about 20 gsm.
3. The method according to claim 1 , wherein the nonwoven web has a basis weight of between about 8 gsm and about 18 gsm.
4. The method according to claim 1 , wherein the plurality of apertured protuberances are arranged in a pattern having a mesh count of at least 35.
5. An activated composite web, comprising a composite web having:
a nonwoven layer; and
a film layer attached to the nonwoven layer, the film layer comprising a plurality of apertured protuberances,
wherein the composite web is activated by stretching with intermeshing elements to form the activated composite web comprising:
a plurality of first lanes substantially unaffected by activation aligned in a first direction and having a first width in a second direction substantially perpendicular to the first direction, wherein a first portion of the plurality of apertured protuberances forms a plurality of first apertured protuberances having a plurality of corresponding first apertures with first cross-sectional areas, the first apertured protuberances located in the first lanes; and
a plurality of second lanes aligned in the first direction and having a second width less than the first width in the second direction, the first lanes and the second lanes alternating with each other in the second direction, wherein a second portion of the plurality of apertured protuberances forms a plurality of second apertured protuberances having a plurality of corresponding second apertures with second cross-sectional areas, each of the second cross-sectional areas being larger than each of the first cross-sectional areas, the second apertured protuberances located in the second lanes,
wherein each of the first apertures has a first major axis substantially aligned in the first direction, and each of the second apertures has a second major axis substantially aligned in the second direction.
6. The activated composite web according to claim 5 , wherein the film layer has a basis weight of between about 6 gsm and about 20 gsm.
7. The activated composite web according to claim 5 , wherein the nonwoven web has a basis weight of between about 8 gsm and about 18 gsm.
8. The activated composite web according to claim 5 , wherein the plurality of apertured protuberances are arranged in a pattern having a mesh count of at least 35.