Melt-blown material with depth fiber size gradient

Details Melt-blown material with depth fiber size gradient Melt-blown material with depth fiber size gradient

1986-05-02

1987-12-22

Bell, James J.

Stock material or miscellaneous articles

Structurally defined web or sheet

Including components having same physical characteristic in...

55487, 156167, 428284, 428286, 428298, 428296, 428903, B32B 702

Patent

active

047146478

ABSTRACT:
A filter medium is formed by sequentially depositing layers of melt-blown thermoplastic fibers, having the same composition but different sizes, onto a collector. The resulting laminate web has a fiber size gradient across its depth so that the large particulate can be trapped across the filter's depth without prematurely plugging the fine fiber, high efficiency layers.

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