Heat-resisting cushion material and method for producing the sam

Fabric (woven – knitted – or nonwoven textile or cloth – etc.) – Nonwoven fabric – Including an additional nonwoven fabric

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Details

442392, B32B 2734

Patent

active

056459270

ABSTRACT:
The base layer of the cushion material is comprised of a ground body of meta-aromatic polyamide fibers and a bonding layer of substantially non-drawn meta-aromatic polyamide fibers integrated by needling. The airtight layer over the base layer comprises a non-woven fabric sheet of meta-aromatic polyamide fibers. The non-woven fabric sheet is integrated to the base layer under pressure by applying temperatures at or above the glass transition temperatures but at or below the decomposition temperatures of the constitutent fibers of the bonding layer.

REFERENCES:
patent: 4463465 (1984-08-01), Parker et al.
patent: 4750443 (1988-06-01), Blaustein et al.

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