Darrell C. Steagall - Gastonia NC William C. Hoyle - Rockwell NC George G. Gabrel - Tupelo MS
Assignee:
Cumulus Fibres, Inc. - Charlotte NC
International Classification:
B32B 702
US Classification:
428218
Abstract:
A dual layer, dual density batt having a first batt layer comprising at least first and second staple polymer fiber constituents forming a homogeneous intermixture of the fibers, at least some of the fibers in the first or second fiber constituents having a relatively low predetermined melting temperature and the remainder of the fiber in the first or second fiber constituents having a relatively high predetermined melting temperature and a second batt layer comprising at least first and second staple polymer fiber constituents forming a homogeneous intermixture of the fibers. At least some of the fibers in the first or second fiber constituents have a relatively low predetermined melting temperature and the remainder of the fiber in the first or second fiber constituents have a relatively high predetermined melting temperature. The first and second fiber constituents of the first batt layer comprise a different proportion or selection of fibers from the second batt layer to produce a different density in the first and second batt layers upon compression. The first and second fiber batt layers are overlaid to define a multi-layer web structure having intimately interconnected and fused first and second batt layers and intimately interconnected and fused first and second fiber constituents in both first and second batt layers.