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1. (WO2005067848) PROCEDE DE COLLAGE DE SURFACES SUR UNE BANDE
Note: Texte fondé sur des processus automatiques de reconnaissance optique de caractères. Seule la version PDF a une valeur juridique

What is claimed is:

1. A method for bonding surfaces on a web comprising:
providing a web which includes leg openings and which defines at least a first bonding surface adjacent each leg opening; and
for each leg opening:
deforming the web so as to modify the shape of the leg opening;
providing a strip defining a second bonding surface;
bonding together at least portions of the first and second bonding surfaces of the modified leg opening; and
relaxing the web.

2. The method of claim 1 , wherein providing the strip defining the second bonding surface comprises folding an edge region of the web during, before or after deformation of the web.

3. The method of claim 1 , wherein providing the strip defining the second bonding surface comprises providing a strip of material separate from the web.

4. The method of claim 3, wherein the separate strip comprises an elastic material.

5. The method of claim 4, further comprising stretching the elastic material prior to bonding at least a portion of the first and second bonding surfaces.

6. The method of claim 3, further comprising curving the strip of material on at least one puck prior to bonding the strip of material to the web.

7. The method of claim 1 , wherein the web is stretchable, and deforming the web comprises stretching at least a portion of the web.

8. The method of claim 7, wherein the web is stretched in a machine direction.

9. The method of claim 7, wherein the web is stretched in a cross-machine direction.

10. The method of claim 7, wherein the web is stretched on a drum which includes inclined surfaces.

11. The method of claim 1 , wherein the web is deformed by rotating portions of the web.

12. The method of claim 1 , wherein the web defines curved leg openings, and deforming the web comprises modifying the curvature of each leg opening.

13. The method of claim 12, wherein deforming the web comprises reducing the degree of curvature of each leg opening.

14. The method of claim 12, wherein deforming the web comprises forming a straight or substantially straight edge from each curved leg opening.

15. The method of claim 1 , wherein the first and second bonding surfaces are bonded together by spaced-apart bonds.

16. The method of claim 1 , wherein the first and second bonding surfaces are bonded together by means of ultrasonic bonding.

17. The method of claim 1 , wherein the first and second bonding surfaces are bonded together by means of pressure bonding.

18. The method of claim 1 , wherein the web comprises a biaxially stretchable outer cover for an absorbent garment.

19. A method for bonding surfaces on a moving web comprising:
providing a web travelling in a machine direction which includes curved leg openings and which defines at least a first bonding surface adjacent each leg opening; and,
for each leg opening:
deforming the web so as to modify the curvature of the leg opening;
folding an edge portion of the web to form a strip adjacent the leg opening before, during .or after deformation of the web, the strip defining a second bonding surface; bonding the second bonding surface on the folded strip to the first bonding surface on the web; and
relaxing the web.

20. The method of claim 19, including applying a strip of elastic material to the web prior to folding the edge portion of the web.