Fibrous formed products and methods for manufacturing such fibrous formed products
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United States of America Patent
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Issued Date -
Jan 27, 2005
app pub date -
May 19, 2004
filing date -
May 20, 2003
priority date (Note) -
Abandoned
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Abstract
In a method of manufacturing a fibrous formed product, a mixture of fibers, including thick fibers and thin fibers, is prepared in order to form fibrous mats. The mixed fibers are supplied onto an outer peripheral surface of a roller. As the roller rotates, the mixed fibers are released from the roller and are thrown toward a fiber receiving surface. A fibrous mat is formed on the fiber receiving surface with a low-density layer next to the fiber receiving surface and a high-density layer on top of the low-density layer. Thick fibers mainly form the low-density layer and thin fibers mainly form the high-density layer. First and second fibrous mats are overlaid with one another such that their low-density layers oppose each other.
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