Paired air bar/hole bar arrangement in web dryer

Number of patents in Portfolio can not be more than 2000

United States of America Patent

PATENT NO 8615899
SERIAL NO

12462359

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ATTORNEY / AGENT: (SPONSORED)

Importance

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Abstract

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Apparatus and method for the non-contact drying of a web of material. The apparatus includes air flotation nozzles for floating the web, and direct air impingement nozzles for enhanced drying of the web. The nozzle arrangement is particularly well-suited to float and dry light weight webs under moderate to high tension. Increased cushion pressure is created to support the web preferably with the same horsepower as conventional arrangements. The increased cushion pressure pad of the nozzle arrangement allows for good flotation with reduced velocities below about 11,500 FPM. Machine direction wrinkles are removed and the result is positive flotation with no marking on the web or ink build up on the air bars. The nozzle arrangement includes pairs of flotation nozzles directly opposing pairs of direct impingement nozzles. A perforated member can be positioned between flotation nozzles within a pair of flotation nozzles to control return air.

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First Claim

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Patent Owner(s)

Patent OwnerAddress
BABCOCK & WILCOX MEGTEC LLC830 PROSPER ROAD DE PERE WI 54115

International Classification(s)

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Rocheleau, Michael O DePere, US 9 109

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