High bulk composite sheets and method for preparing
AssigneeInvista North America S.A R.L.
InventorsDimitri Zafiroglu, Jeffrey Chambers, Geoffrey Hietpas
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Abstract
A multi-layer composite sheet comprising a shrinkable layer intermittently bonded a to a gatherable layer with the bonds separated by a specified distance and wherein the shrinkable layer can shrink and at the same time gather the gatherable layer between the bonds. A process for preparing multi-layer composite sheets by intermittently bonding a shrinkable layer to a gatherable layer with the bonds separated by a specified distance and causing the shrinkable layer to shrink while at the same time gathering the gatherable layer between the bonds. Preferably, the shrinkable layer comprises an array of fibers or nonwoven web comprising fibers having latent spiral crimp.
Claims23
1-34. (canceled)
A multi-layer composite sheet comprising:
- a first polymeric layer;
- a second polymeric layer bonded to a first side of the first layer with an intermittent pattern of bonds, the bonds being separated by a bond distance of between about 5 and 25 mm in at least one direction, and the second layer being gathered between the bonds;
- the multilayer composite sheet having a thickness between about 3 mm and 30 mm and a bulk of at least 50 cc/g.
Dependencies are inferred from the claim text.