Patent · US Expired

Air-laydown apparatus for forming uniform webs of staple fibers

US3932915A · kind A · utility

5Cited by

4References

3Claims

0Family size

Assignee

E.I. DU PONT DE NEMOURS AND COMPANY · US

Inventors

Rashmikant Maganlal Contractor · Ardentown, US
Sang-Hak Hwang · Newark, US

Key dates

Filing date	Aug 9, 1974
Grant date	Jan 20, 1976
Priority date	—
Expiry date	Aug 9, 1994

Classification

Technology area (CPC D)Textiles; Paper
CPC primaryD04H1/72
WIPO fieldTextile and paper machines
WIPO sectorMechanical engineering

Abstract

Process and apparatus are disclosed which are suitable for high speed production of uniform, lightweight webs by air-laydown of textile fibers. A toothed disperser roll doffs the fibers into an air stream of high uniform velocity and low turbulence to form a thin fiber stream from which the fibers are deposited in web form on a moving screen. A curved disperser plate, shrouds the disperser roll and prevents premature doffing. By using a disperser plate with a rough surface, preferably one having lateral grooves, web uniformity is remarkably improved.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.