{"id":13,"date":"2014-03-04T09:40:08","date_gmt":"2014-03-04T08:40:08","guid":{"rendered":"http:\/\/www.opdal.net\/simtech\/?page_id=13"},"modified":"2021-08-24T08:55:25","modified_gmt":"2021-08-24T06:55:25","slug":"papermac","status":"publish","type":"page","link":"https:\/\/www.opdalsimtech.no\/?page_id=13","title":{"rendered":"PaperMac"},"content":{"rendered":"

Prediction of the paper properties<\/h2>\n

PaperMac is a library containing blocks for simulation of paper properties.<\/p>\n

The PaperMac blocks can be combined with the regular FlowMac blocks to create models for a specific Paper Machine.<\/p>\n

A PaperMac model is often a simplified process model, but still containing all the most important process units determining the paper properties.<\/p>\n

<\/p>\n

\"PaperMac01\"<\/a><\/p>\n

In a PaperMac model there is a mass balance for fiber, filler, chemicals and based on the mass balance we can calculate production cost for a paper grade.
\nThe PaperMac customer will get meters for calculation of pulp and paper properties:<\/div>\n
– Optical properties: ISO Brightness, CIE L*a*b*, Opacity<\/div>\n
– Density, Thickness, Basis Weight.<\/div>\n
– Bending Stifness- Tensile- and Tear strength<\/div>\n
<\/div>\n
The PaperMac customer will have to provide a lot of data, and most likely do a lot of experiments in laboratory, pilot scale and production scale.Starting from having nothing, it takes about 6 months to just get data.<\/div>\n
The PaperMac modelling is much quicker!<\/div>\n
The first PaperMac model takes time, but the advantage is that You then will have a system for accumulating knowledge in and the next times it is required to develop a new paper grade or optimise a paper grade it will be much quicker!<\/div>\n
<\/div>\n
With the mass balance and the relationships between inputs and properties we can find the cheapest alternatives for obtaining the wanted paper properties.<\/div>\n
\n

As a PaperMac customer You will be guided through the process of doing:<\/p>\n

– Lab studies<\/p>\n

– Data analysis and mathematical modelling<\/p>\n

– Implementation of the results in PaperMac blocks (programming)<\/p>\n

– Collection of mill data<\/p>\n

– Calibrate the model against present paper grades<\/p>\n

– Make a recipe for a new paper grade<\/p>\n

Here is an example of a PaperMac study and the results of model calibration:<\/p>\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n
\u00a0<\/strong><\/td>\nPM X 42.5 <\/strong><\/td>\nPM X 42.5 <\/strong><\/td>\nPM X 45 <\/strong><\/td>\nPM X 45 <\/strong><\/td>\nPM X 48.8<\/strong><\/td>\nPM X 48.8<\/strong><\/td>\n<\/tr>\n
\u00a0<\/strong><\/td>\nMill<\/strong><\/td>\nSimulation<\/strong><\/td>\nMill<\/strong><\/td>\nSimulation<\/strong><\/td>\nMill<\/strong><\/td>\nSimulation<\/strong><\/td>\n<\/tr>\n
Kraft, %<\/strong><\/td>\n2.9<\/strong><\/td>\n0<\/strong><\/td>\n0.7<\/strong><\/td>\n0<\/strong><\/td>\n0.4<\/strong><\/td>\n0<\/strong><\/td>\n<\/tr>\n
TMP1+TMP2, %<\/strong><\/td>\n100<\/strong><\/td>\n50\/50<\/strong><\/td>\n100<\/strong><\/td>\n50\/50<\/strong><\/td>\n100<\/strong><\/td>\n50\/50<\/strong><\/td>\n<\/tr>\n
Filler, %<\/strong><\/td>\n0<\/strong><\/td>\n0<\/strong><\/td>\n0<\/strong><\/td>\n0<\/strong><\/td>\n0<\/strong><\/td>\n0<\/strong><\/td>\n<\/tr>\n
DIP, %<\/strong><\/td>\n0<\/strong><\/td>\n0<\/strong><\/td>\n0<\/strong><\/td>\n0<\/strong><\/td>\n0<\/strong><\/td>\n0<\/strong><\/td>\n<\/tr>\n
Broke, %<\/strong><\/td>\n19<\/strong><\/td>\n18.8<\/strong><\/td>\n17<\/strong><\/td>\n17<\/strong><\/td>\n15<\/strong><\/td>\n15<\/strong><\/td>\n<\/tr>\n
BW, g\/m2<\/strong><\/td>\n42.2<\/strong><\/td>\n42.5<\/strong><\/td>\n44.7<\/strong><\/td>\n45.0<\/strong><\/td>\n48.4<\/strong><\/td>\n48.8<\/strong><\/td>\n<\/tr>\n
Moisture, %<\/strong><\/td>\n9.4<\/strong><\/td>\n9.4<\/strong><\/td>\n9.4<\/strong><\/td>\n9.4<\/strong><\/td>\n9.4<\/strong><\/td>\n9.4<\/strong><\/td>\n<\/tr>\n
Density, kg\/m3<\/strong><\/td>\n657<\/strong><\/td>\n657<\/strong><\/td>\n657<\/strong><\/td>\n659<\/strong><\/td>\n661<\/strong><\/td>\n661<\/strong><\/td>\n<\/tr>\n
Thickness, my<\/strong><\/td>\n64.4<\/strong><\/td>\n65<\/strong><\/td>\n68.1<\/strong><\/td>\n68<\/strong><\/td>\n73.3<\/strong><\/td>\n74<\/strong><\/td>\n<\/tr>\n
Tensile, N\/m<\/strong><\/td>\n2370<\/strong><\/td>\n2432<\/strong><\/td>\n2500<\/strong><\/td>\n2574<\/strong><\/td>\n2790<\/strong><\/td>\n2801<\/strong><\/td>\n<\/tr>\n
Tensile MD\/CD<\/strong><\/td>\n3.03<\/strong><\/td>\n3<\/strong><\/td>\n2.98<\/strong><\/td>\n3<\/strong><\/td>\n2.95<\/strong><\/td>\n3<\/strong><\/td>\n<\/tr>\n
Tear CD, mN<\/strong><\/td>\n258<\/strong><\/td>\n240<\/strong><\/td>\n268<\/strong><\/td>\n258<\/strong><\/td>\n288<\/strong><\/td>\n286<\/strong><\/td>\n<\/tr>\n
ISO Bright, %<\/strong><\/td>\n58.1<\/strong><\/td>\n59<\/strong><\/td>\n58<\/strong><\/td>\n58.7<\/strong><\/td>\n58.1<\/strong><\/td>\n58.6<\/strong><\/td>\n<\/tr>\n
Opacity, %<\/strong><\/td>\n91.8<\/strong><\/td>\n92.17<\/strong><\/td>\n92.9<\/strong><\/td>\n93.1<\/strong><\/td>\n94.1<\/strong><\/td>\n94.35<\/strong><\/td>\n<\/tr>\n
DeltaE<\/strong><\/td>\n0.26<\/strong><\/td>\n0.34<\/strong><\/td>\n0.31<\/strong><\/td>\n0.31<\/strong><\/td>\n0.39<\/strong><\/td>\n0.19<\/strong><\/td>\n<\/tr>\n
CIE L*<\/strong><\/td>\n83.32<\/strong><\/td>\n83.72<\/strong><\/td>\n83.2<\/strong><\/td>\n83.68<\/strong><\/td>\n83.17<\/strong><\/td>\n83.6<\/strong><\/td>\n<\/tr>\n
CIE a*<\/strong><\/td>\n-0.33<\/strong><\/td>\n-0.33<\/strong><\/td>\n-0.31<\/strong><\/td>\n-0.33<\/strong><\/td>\n-0.28<\/strong><\/td>\n-0.31<\/strong><\/td>\n<\/tr>\n
CIE b*<\/strong><\/td>\n5.07<\/strong><\/td>\n5.07<\/strong><\/td>\n4.97<\/strong><\/td>\n5.08<\/strong><\/td>\n4.81<\/strong><\/td>\n5.00<\/strong><\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

For more information and examples of use of PaperMac, contact \u00d8ivind Opdal.<\/p>\n

By email to: oivind (a) opdal.net<\/p>\n

By phone: +47 481 46 096<\/p>\n<\/div>\n","protected":false},"excerpt":{"rendered":"

Prediction of the paper properties PaperMac is a library containing blocks for simulation of paper properties. The PaperMac blocks can be combined with the regular FlowMac blocks to create models for a specific Paper Machine. A PaperMac model is often a simplified process model, but still containing all the most important process units determining the […]<\/p>\n","protected":false},"author":1,"featured_media":80,"parent":0,"menu_order":3,"comment_status":"closed","ping_status":"open","template":"page-full.php","meta":{"footnotes":""},"class_list":["post-13","page","type-page","status-publish","has-post-thumbnail","hentry"],"_links":{"self":[{"href":"https:\/\/www.opdalsimtech.no\/index.php?rest_route=\/wp\/v2\/pages\/13","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.opdalsimtech.no\/index.php?rest_route=\/wp\/v2\/pages"}],"about":[{"href":"https:\/\/www.opdalsimtech.no\/index.php?rest_route=\/wp\/v2\/types\/page"}],"author":[{"embeddable":true,"href":"https:\/\/www.opdalsimtech.no\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.opdalsimtech.no\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=13"}],"version-history":[{"count":16,"href":"https:\/\/www.opdalsimtech.no\/index.php?rest_route=\/wp\/v2\/pages\/13\/revisions"}],"predecessor-version":[{"id":232,"href":"https:\/\/www.opdalsimtech.no\/index.php?rest_route=\/wp\/v2\/pages\/13\/revisions\/232"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.opdalsimtech.no\/index.php?rest_route=\/wp\/v2\/media\/80"}],"wp:attachment":[{"href":"https:\/\/www.opdalsimtech.no\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=13"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}