US 10,119,225 B2Granted

Systems for controlling a manufacturing line used to convert a paper web into paper products by reading marks on the paper web

AssigneeGPCP IP Holdings LLC

InventorsAndrew G. Bomstad, Thomas J. Petersen, Joseph A. Schulz, Gregory T. Johnson, Mark F. Gerrits

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Abstract

A system for producing a paper product. The system includes a paper machine, an analysis tool, and a converting line. The paper machine forms a paper web having a plurality of sections, inspects the paper web to identify web properties, and marks the paper web with a plurality of marks. The analysis tool assigns action scores to each section of the paper web based upon the identified properties that section of the paper web. The converting line reads at least one of the plurality of marks on the paper web, obtains the action score associated with a second one of the plurality of marks, calculates a distance between the at least one mark read by the reading unit and the second one of the plurality of marks, and changes at least one operational parameter of the converting line when the calculated distance is less than a threshold.

Claims58

Dependent claims

A system for producing a paper product, the system comprising:

(A) a paper machine for forming a paper web, the paper web including a plurality of sections in a sequence, the paper machine including:
(a) a web analysis unit to perform at least one of inspecting the paper web and identifying properties in the paper web;
(b) a marking unit to mark the paper web with a plurality of marks, at least one mark being assigned to each of the plurality of sections;
and
(c) a winder to wind the paper web into a parent roll, the winder being positioned after the web analysis unit and the marking unit;
(B) an analysis tool configured to assign an action score to each section of the paper web based upon the identified properties in that section of the paper web, at least one action score having an action value, the action value being a value of the action score that indicates an actionable risk of converting line failure;
and
(C) a converting line for converting the paper web into a paper product, the converting line having a plurality of operating parameters and including:
(a) an unwind stand to unwind the paper web from the parent roll;
(b) a mark reading unit that (i) reads at least one of the plurality of marks on the paper web and (ii) produces a corresponding output from the mark that has been read;
(c) a controller that receives the output from the mark reading unit and is configured:
(i) to obtain the action score associated with a second one of the plurality of marks, the second one of the plurality of marks being the next mark with an action value after the at least one mark read by the reading unit,
(ii) to calculate a distance between the at least one mark read by the reading unit and the second one of the plurality of marks, and
(iii) to change at least one operational parameter of the converting line based upon the action score of the second one of the plurality of marks when the calculated distance is less than a threshold;
and
(d) a finisher, the paper web being fed to the finisher and converted into a paper product.

13 more elements

A system for producing a paper product, the system comprising:

(A) a paper machine for forming a paper web, the paper web including a plurality of sections, the paper machine including:
(a) a web analysis unit to perform at least one of inspecting the paper web and identifying properties in the paper web;
(b) a marking unit to mark the paper web with a plurality of marks, at least one mark being assigned to each of the plurality of sections;
and
(c) a winder to wind the paper web into a parent roll, the winder being positioned after the web analysis unit and the marking unit;
(B) an analysis tool configured to assign a quality score to each section of the paper web based upon the identified properties in that section of the paper web, at least one quality score having an action value, the action value being a value of the quality score that indicates an unacceptable quality defect;
and
(C) a converting line for converting the paper web into a paper product, the converting line having a plurality of operating parameters and including:
(a) an unwind stand to unwind the paper web from the parent roll;
(b) a mark reading unit that (i) reads at least one of the plurality of marks on the paper web and (ii) produces a corresponding output from the mark that has been read;
(c) a finisher, the paper web being fed to the finisher and converted into a paper product;
and
(d) a controller that receives the output from the mark reading unit and is configured:
(i) to obtain the quality score associated with the at least one mark read by the reading unit, and
(ii) to cause the finisher to reject the paper product corresponding to one of the plurality of paper web sections when the quality score of the at least one mark read by the reading unit has an action value.

12 more elements

Dependencies are inferred from the claim text.

Facts

Application: 14/685,967Filed 14 Apr 2015 · us provisional application
Priority: 15 Apr 2014
Published: US 2015/0292163 A115 Oct 2015
Granted: 6 Nov 2018
Term ends: Not estimatedThe source records don’t support an estimate.

Classification16 codes

D21G 9/0009
Other accessories for paper-making machines: paper-making control systems
D21F 11/14
Processes for making continuous lengths of paper, or of cardboard, or of wet web for fibre board production, on paper-making machines: making…
D21G 9/0027
Paper-making control systems: controlling the forming section
D21G 9/0045
Paper-making control systems: controlling the calendering or finishing

Family

Application61/980,022Us provisional application · filed 15 Apr 2014
US 2015/0292163 A1Pre-grant publication · published 15 Oct 2015
US 10,119,225 B2This patent

From the US filing history. Foreign family members aren’t listed.

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