Method and arrangement for controlling the temperature of two cylinders
AssigneeTetra Laval Holdings & Finance S.A.
InventorHossain Peshkar
Life of this patent
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Abstract
Method and arrangement for controlling the temperature of two cylinders forming a nip. The temperature of at least one point on each cylinder is sensed by sensors, forming a point of measuring, wherein the highest sensed temperature is used as set point and wherein the cylinders are heated in areas where the sensed temperature is below the set point.
Claims20
A method of controlling the temperature of two cylinders forming a nip, comprising:
- sensing the temperature of at least one point on each cylinder, forming a point of measuring, using a highest sensed temperature as a set point, and heating the cylinders in areas where the sensed temperature is below the set point.
An arrangement for controlling a temperature of two cylinders forming a nip, comprising two cylinders positioned relative to one another to form a nip, sensors to measure the temperature at specific points of measuring on the cylinders or parts associated with the cylinders.
A method of controlling temperatures of first and second scoring cylinders which are positioned relative to one another to define a nip between which a web passes to be scored by the scoring cylinders, the method comprising:
- sensing temperature at a plurality of points on the first scoring cylinder to determine sensed temperature at each of the points on the first scoring cylinder;
- sensing temperature at a plurality of points on the second scoring cylinder to determine sensed temperature at each of the points on the second scoring cylinder;
- identifying a highest one of the sensed temperatures as a set point temperature;
- and
- heating areas of the first and second scoring cylinders where the sensed temperature is below the set point temperature.
Dependencies are inferred from the claim text.