Paper trim cut measurement device and method

Patent metadata

Field	Value
Publication number	US-11198971-B2
Application number	US-201916387021-A
Country	US
Kind code	B2
Filing date	Apr 17, 2019
Priority date	Nov 26, 2014
Publication date	Dec 14, 2021
Grant date	Dec 14, 2021

Abstract

One embodiment provides a papermaking machine, which includes a wire for conveying a fiber web; a trim squirt for making a cut line in the fiber web; a machine reference; and a measurement device for measuring a distance between the cut line and the machine reference, the device comprising a laser adapted to illuminate the cut line and determine a location of the cut line for the measuring. Methods of making and using the papermaking machine are also provided.

First claim

The invention claimed is:

1. A method for making a fiber web, comprising:
conveying a fiber web on a wire of a papermaking machine, the papermaking machine comprising a trim squirt and a machine reference for providing a fixed reference point on the papermaking machine;
making a cut line in the fiber web with the trim squirt;
illuminating the cut line and determining a location of the cut line with a laser; and
using the location, measuring a distance in the cross machine direction between the cut line and a point aligned in the cross machine direction with the machine reference.

2. The method of claim 1 , wherein the papermaking machine further comprises a hydraulic headbox having a plurality of dilution actuators, further comprising adjusting an output of one or more of said actuators using said distance.

3. The method of claim 1 , further comprising one or more of pressing, drying, coating, calendering, or cutting all or a portion of the fiber web.

4. The method of claim 1 , further comprising collecting all or a portion of the fiber web on a reel.

5. The method of claim 1 , further comprising converting the fiber web into a paper product.

6. The method of claim 1 , wherein the papermaking machine further comprises a hydraulic headbox having a plurality of dilution actuators, further comprising adjusting a control output to one or more of said dilution actuators using a control map.

Assignees

• Int Paper Co

Inventors

• Haddock Jeremy Allan
• Falcone Jr Ronald Arthur

Classifications

• D21F7/006 Primary

  Cutting the edges of the paper-web · CPC title

• D21F2/00

  Transferring continuous webs from wet ends to press sections · CPC title

• D21G9/0027

  controlling the forming section · CPC title

• D21F9/02

  of the Fourdrinier type · CPC title