Neck bonded and stretch bonded laminates with perforated nonwovens and method of making
View Patent ↗An elastic laminate of a necked, or otherwise inherently stretchable, and perforated nonwoven web layer and an unperforated elastic film layer and methods of making the laminate are disclosed. An elastic laminate according to the present invention may utilize both the stretch gained from the necking, as well as providing increased ability of the necked nonwoven to stretch due to the perforations, cumulatively resulting in high stretch of the elastic laminate in one or more directions.
1. A high-stretch elastic laminate, comprising:
a) one or more necked nonwoven webs having a plurality of perforations; and
an elastic film substantially devoid of perforations bonded to the one or more necked, perforated nonwoven webs.
2. The high-stretch elastic laminate of claim 1 , wherein the nonwoven web is a spunbond nonwoven web.
3. The high-stretch elastic laminate of claim 1 , wherein the perforations of the nonwoven web extend in the cross direction.
4. The high-stretch elastic laminate of claim 1 , wherein the perforations of the nonwoven web extend in the machine direction.
5. The high-stretch elastic laminate of claim 1 , wherein the nonwoven web is perforated before being necked.
6. The high-stretch elastic laminate of claim 1 , wherein the nonwoven web is perforated after being necked.
7. The high-stretch elastic laminate of claim 1 , wherein the nonwoven web is selectively perforated in some regions and left un-perforated in other regions.
8. The high-stretch elastic laminate of claim 1 wherein the elastic film is an elastomeric block copolymer film.
9. The high-stretch elastic laminate of claim 1 wherein the laminate is one of a stretch bonded laminate, a neck bonded laminate, a necked stretch bonded laminate, or a creped nonwoven/elastic film laminate.
10. A method of making a high-stretch elastic laminate of a necked nonwoven web and an elastic film substantially devoid of perforations, comprising:
a) necking a nonwoven web
b) placing a plurality of perforations in the nonwoven web; and
c) bonding an elastic film substantially devoid of perforations to the necked and perforated nonwoven web.
11. The method of making a high-stretch elastic laminate of claim 10 , wherein the nonwoven web is a spunbond nonwoven web.
12. The method of making a high-stretch elastic laminate of claim 10 , wherein the perforations of the nonwoven web extend in the cross direction.
13. The method of making a high-stretch elastic laminate of claim 10 , wherein the perforations of the nonwoven web extend in the machine direction.
14. The method of making a high-stretch elastic laminate of claim 10 , wherein the nonwoven web is perforated before being necked.
15. The method of making a high-stretch elastic laminate of claim 10 , wherein the nonwoven web is perforated after being necked.
16. The method of making a high-stretch elastic laminate of claim 10 , wherein the nonwoven web is selectively perforated in some regions and left un-perforated in other regions.
17. The method of making a high-stretch elastic laminate of claim 10 wherein the elastic film is an elastomeric block copolymer film.
18. The method of making a high-stretch elastic laminate of claim 10 wherein the laminate is made as one of a stretch bonded laminate, a neck bonded laminate, a necked stretch bonded laminate, or a creped nonwoven, elastic film laminate.
19. A side panel for a personal care garment made from the high-stretch elastic laminate of claim 1 .
20. A side panel for a personal care garment made according to the method of claim 10 .