Dual density non-woven batt

Details Dual density non-woven batt Dual density non-woven batt

1990-08-31

1992-01-07

Bell, James J.

Stock material or miscellaneous articles

Structurally defined web or sheet

Including components having same physical characteristic in...

428280, 428282, 428284, 428287, 428289, 428290, 428296, 428447, B32B 702

Patent

active

050790749

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. The first batt layer has a relatively high density and the second batt layer has a relatively low density. Both first and second batt layers of the batt are resiliently compressible to at least one-third of the uncompressed thickness.

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