High speed former head

Details High speed former head High speed former head

2006-09-19

2006-09-19

Welch, Gary L. (Department: 3765)

Textiles: fiber preparation

Assembling

Web forming

C019S161100

Reexamination Certificate

active

07107652

ABSTRACT:
A former head for dry forming fibrous tissue in which a fiber material is mixed with air introduced to at least one rotating drum in a former head by injection. The drum is provided internally with means for fluidizing the injected fibers simultaneously, enabling higher production capacity and an increased distribution quality of the fibers. This former head has high capacity and an increased width, preferably over four meters, which avoids natural oscillations in the needle rollers as they are substituted by slotted air nozzles. The nozzles extend along a whole length of the drum and have adjustable nozzle lips to regulate the amount of air and direction of the air-flow blown through the perforations of the drum. Surprisingly, the capacity of the former head is markedly higher than conventional devices and distribution quality also is markedly better than by high-speed operation of traditional machines.

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