Patent ID: 6408534
Filing Date: 2002-06-25
Classification: D21F

Abstract:
A steam box for heating a web, which includes an elongated steam-distribution chamber as a first row disposed transverse to the web, regulator chambers as a next row disposed transverse to the web and covered on one side with a continuous perforated screen on a web-side edge of the steam box, and operating devices to distribute the steam from the distribution chamber to each regulator chamber, and which steam box is operative to feed steam through the perforated screen to the web, to heat it according to the desired profile, characterized in that the said perforated screen is secured along one long edge disposed transverse to the web to hinge members and along an opposite edge to locking members and arranged so that said perforated screen can be swung open outwardly about said hinge members to permit access to the regulator chambers.