Patent · US Expired

Air lay-down process for producing uniform lightweight webs from textile fibers

US4089086A · kind A · utility

4Cited by

5References

1Claims

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	Dec 1, 1975
Grant date	May 16, 1978
Priority date	—
Expiry date	Dec 1, 1995

Classification

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

Abstract

Process is disclosed which is 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 layer from which the fibers are deposited in web form on a moving screen. A curved disperser plate, shrouds a portion of the disperser roll up to the point of fiber 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.