US 10,255,572 B2Granted

Integration of clothing performance in planning optimization of paper and board machine to reduce manufacturing costs

AssigneeHoneywell ASCa Inc.

InventorsChandra Azad, Balamurugan Ramakrishnan, Lingathurai Palanisamy, Niranjan Rao, Gajanan Rothe

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Abstract

Integration of clothing performance into production planning, scheduling and execution of papermaking machines yields paper products with consistent acceptable quality with minimum downtime and inventory. Linking the selection and operation of papermaking machines to their respective clothing performances improves clothing life cycle. Selected operating parameters of a papermaking machine and historical clothing data are indicative of the machine's clothing condition. Order scheduling engine identifies manufacturing times for particular grades of product and generates order blocks. Papermaking machines are assigned to execute specific order blocks with provision that each machine completes execution of the assigned orders without any anticipated breakage of the wire or felts.

Claims16

Dependent claims

A method of planning the manufacturing of paper products with a plurality of papermaking machines wherein for each of the plurality of papermaking machines a sheet of wet stock comprising fibers is initially formed on a water permeable moving wire of a forming section of a de-watering machine and thereafter a sheet of partially de-watered web stock is transferred to a press section of the de-watering machine, wherein the press section comprises a continuously circulating press felt, wherein said method comprises:

(a) operating the plurality of papermaking machines to produce paper products including online or offline cleaning of at least one of the wire or felt;
(b) monitoring the condition of clothing on each of the plurality of papermaking machines and estimating the useful life of the clothing for each papermaking machine based on empirical operating data and historical clothing data;
(c) establishing a library containing the useful clothing life of the clothing for each of the papermaking machines for supported grades and basis weights;
(d) obtaining customer orders for paper products including (i) collecting one or more customer order parameters that is selected from the group consisting of paper product specifications, transportation modes, delivery dates, and combinations thereof and (ii) classifying the customer orders according to one or more product criteria that is selected from the group consisting of grade of paper product, paper product quantity, delivery date, and combinations thereof to create a tabulation of discrete production orders;
(e) identifying the warehousing requirements for the paper products;
(f) identifying the delivery date for each of the discrete production orders;
and
(g) assigning one or more of the plurality of papermaking machines to execute the discrete production orders with the objective of limiting costs.

5 more elements

A method of efficient planning of operating a papermaking machine with enhanced clothing life wherein a sheet of wet stock comprising fibers is initially formed on a water permeable moving wire of a forming section of a de-watering machine and thereafter a sheet of partially de-watered web stock is transferred to a press section of the de-watering machine, wherein the press section comprises at least one continuously circulating press felt, the method comprising:

(a) operating the machine to produce a selected quantity of first grade paper product including online or offline cleaning of at least one of the wire or felt;
(b) monitoring the conditions of the wire and felt and generating empirical operating data thereof, wherein the empirical operating data forms a database which correlates actual useful lives of the wire and felt to papermaking machine operating parameters in producing paper products;
(c) establishing a library containing the useful lives of the wire and felt for the machine for supported grades and basis weights;
(d) collecting historical clothing data for the papermaking machine and using the database and historical clothing data to calculate the remaining useful lives of the wire and felt with respect to producing a subsequent quantity of subsequent grade of paper product under selected papermaking machine operating parameters, wherein the subsequent grade of paper produced could be the same as the grade of previously made paper product;
(e) operating the papermaking machine under the selected papermaking machine operating parameters to produce a selected subsequent quantity of subsequent grade of paper product, with the proviso that the papermaking machine is operated under operation conditions so that the selected subsequent quantity of subsequent grade of paper product is produced within the remaining useful life of the wire or of the felt that is calculated in step (d);
and
(f) repeating steps (b) through (e) until the useful life of either the wire or felt is reached.

4 more elements

Dependencies are inferred from the claim text.

Facts

Application: 14/795,623Filed 9 Jul 2015
Published: US 2017/0011317 A112 Jan 2017
Granted: 9 Apr 2019
Term ends: Not estimatedThe source records don’t support an estimate.

Classification7 codes

G06Q 10/06313
Resource planning, allocation, distributing or scheduling for enterprises or organisations: resource planning in a project environment
D21G 9/0009
Other accessories for paper-making machines: paper-making control systems
D21G 9/0027
Paper-making control systems: controlling the forming section
D21G 9/0036
Paper-making control systems: controlling the press or drying section