Patent ID: 7501082
Filing Date: 2009-03-10
Classification: D01F,D02J

Abstract:
1. Oven for drawing fibre at elevated temperature, comprising: guide rolls on two sides of the oven opposite one another, the guide rolls dictating a zigzag up-and-down drawing trajectory for the fibre in the oven which is at least 20 meters long, driving mechanisms associated operatively with each of the guide rolls for driving each of the guide rolls at a selected peripheral velocity, a control system operatively connected to the driving mechanisms for separately setting and controlling the selected peripheral velocity of each of the guide rolls so as to draw the fibre as it traverses the drawing trajectory in the oven, and wherein the control system includes devices for determining the power uptake of the driving mechanisms so that each of the guide rolls may be driven at a selected peripheral velocity so as to prevent slip between the fibre and the guide rolls.