NON-WOVEN MATERIAL Russian patent published in 1995 - IPC

Abstract RU 2046858 C1

FIELD: non-woven fabrics. SUBSTANCE: filtering material has upper and lower external nonwoven layers manufactured from polyester fibers and internal woven carcass layer of linen weave joined together by needle-piercing. An external layer is pretreated by needle-punching and additionally provided with web layer adjacent to the carcass and attached to the external layer by means of needle-piercing. The external layer material proportion is 1:1.25: 2.0, needle-piercing degree is 1:1:2. One of the external layers is covered with air-permeable melt. EFFECT: improved strength and elasticity characteristics. 2 cl, 1 dwg

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RU 2 046 858 C1

Authors

Poboroznjuk E.G.

Zaletov A.I.

Dates

1995-10-27—Published

1993-04-13—Filed