Methods and apparatus for making multi-layer absorbent products

Details Methods and apparatus for making multi-layer absorbent products Methods and apparatus for making multi-layer absorbent products

A - Human Necessities

61

F

A61F 13/15 (2006.01) A61F 13/53 (2006.01) B26D 11/00 (2006.01) B26F 1/38 (2006.01) B32B 31/16 (2000.01)

Patent

CA 2143803

Improved methods and apparatus for forming absorbent products and the improved absorbent products formed thereby are disclosed. In a first embodiment of the preset invention, a rotary die is used to cut ellipsoidal and hyperbolic-shaped from a single sheet of material and these shapes are overlaid to form an absorbent structure. The shapes are chosen such that there is no waste of the material and yet the resulting absorbent structure is of a useful shape. Methods are also disclosed whereby two sets of rotary dies are used to simultaneously cut two sheets of material into an arcuate segment and the arcuate segments are overlaid atop each other to form useful absorbent structures. In either embodiment, powders such as superabsorbents may be added to one or more of the surfaces of the components used to construct the absorbent structures.

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