Industrial textile, a method for measuring a condition on the surface of the industrial textile and a use of the industrial textile

Abstract

The present invention relates to an industrial textile (1) for a drying process. The industrial textile (1) comprises a first surface (P) and a second surface (R); and longitudinal edge portions (EP1, EP2) and a centre portion (MP) between the edge portions (EP). The industrial textile comprises a sensor (2, 4). The present invention also relates to a method for measuring a condition on a surface of the industrial textile (1) and a use of the industrial textile (1).

Claims

1. An industrial textile (1) for a drying process on a paper, board or pulp machine, the industrial textile (1) comprising a first surface (P) and a second surface (R); and longitudinal edge portions (EP1, EP2) and a centre portion (MP) between the edge portions, at least one of the edge portions (EP1, EP2) of the industrial textile comprises a sensor (2) wherein the sensor is a label reacting to the condition to be measured, the condition to be measured is temperature or relative humidity, and the label comprises a range of marks, each mark corresponding to a certain range of the condition to be measured in such a manner that when the condition to be measured exceeds the range of the certain mark, the mark changes its colour permanently.

2. The industrial textile according to claim 1, wherein at least one of the edge portions (EP1, EP2) comprise at least one sensor (2) attached to either surface (P, R) of the industrial textile (1).

3. The industrial textile according to claim 1, wherein the sensor (2) has a protective cover (3).

4. The industrial textile according to claim 3, wherein the protective cover (3) is a heat resistant adhesive tape.

5. A method for measuring a condition on a surface of an industrial textile (1), the industrial textile supporting a material to be dried in a drying process on a paper, board or pulp machine, comprising: providing at least one of the edge portions (EP1, EP2) of the industrial textile with a sensor (2) which is a label reacting to the condition to be measured, the condition to be measured is temperature or relative humidity, and the label comprises a range of marks, each mark corresponding to a certain range of the condition to be measured in such a manner that when the condition to be measured exceeds the range of the certain mark, the mark changes its colour permanently, letting the drying process to run a period until a stoppage, and reading the condition during the stoppage.

6. The method according to claim 5, wherein the method further comprises covering the sensor (2) with a protective cover (3).

7. The method according to claim 6, wherein the sensor (2) is covered with a heat resistant adhesive tape.

Description

BRIEF DESCRIPTION OF THE DRAWINGS

(1) In the following the invention will be described in greater detail by means of preferred embodiments with reference to the attached drawings, in which

(2) FIG. 1 shows an industrial textile from above;

(3) FIG. 2 the industrial textile of FIG. 1 as a cross-sectional view.

DETAILED DESCRIPTION OF THE INVENTION

(4) FIG. 1 shows an industrial textile 1 which comprises a first surface P and a second surface R (shown in FIG. 2). The industrial textile comprises longitudinal edge portions EP1 and EP2 and a centre portion MP between the edge portions EP1 and EP2. The cross direction of the industrial textile 1 is indicated by CMD and the longitudinal direction of the industrial textile 1 is indicated by MD. In connection with woven industrial textiles, the cross direction CMD is the weft direction and the longitudinal direction MD is the warp direction.

(5) The edge portion EP2 comprises a sensor 2, e.g. a label reacting to a condition, such as temperature or relative humidity. Examples of such sensors are, among others, a temperature tape Thermostrip DC (LCR Hallcrest, Great Britain) and Maximum Humidity Indicator Cards (Telatemp, USA).

(6) FIG. 2 shows the industrial textile 1 of FIG. 1 comprising the sensor 2 as a cross-sectional view. The sensor 2 is attached to the industrial textile 1, e.g. a wire or a felt. The sensor 2 is covered with a protective cover 3, e.g. an adhesive tape. Examples of the adhesive tapes are, among others, Fiberflect Tape AB (ADL Insulflex Inc, Canada) or Silicaflex Tape AB (ADL Insulflex Inc, Canada).

(7) It will be obvious to a person skilled in the art that, as the technology advances, the inventive concept can be implemented in various ways. The invention and its embodiments are not limited to the examples described above but may vary within the scope of the claims.