Mill Report Elizabeth Keelin Kelsey Hans and Chris Introduction Main Objective correctly proportion four pulp stocks to create a high quality general purpose copy grade paper Awarded 30000 research contract to develop and test product on PM2 ID: 558627
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Slide1
The Paper SavagesMill Report
Elizabeth, Keelin, Kelsey, Hans and ChrisSlide2
Introduction
Main Objective:
correctly proportion four pulp stocks to create a high quality, general purpose copy grade paper.
Awarded $30,000 research contract to develop and test product on PM2
Formed handsheets from a test stock of 35% NBSK, 54% BHK, 4% TMP, 7% ONP and 10% filler.Paper samples tested in TAPPI standard labEvaluated for Grammage, Caliper, Opacity, Brightness, Tensile and Burst StrengthSlide3
Introduction
Test results showed that the filler impacted percent error, but couldn’t change filler percentage.
Amounts added changed
from:
7% ONP 35% NBSK 4%TMP 54% BHKto:5% ONP 35% NBSK 3.25% TMP 56.75% BHKSlide4
Introduction : Conditions
After the initial testing we moved onto the Pilot Plant Run
Five total Runs were done, to collect 5 samples of Paper
Condition
FillerCalendar Nips
Additional Pressure
A
no
0
—
B
yes
0—Cyes2—Dyes4—Eyes4 yesSlide5
Ours Goals
Produce a copy grade paper out of a stock blend of:
Bleached Hardwood Kraft Fiber (BHK)
Northern Bleached Softwood Kraft (NBSK)
Thermomechanical Pulp (TMP)Recycled ONP/OMG Calcium Carbonate FillerCost per air dried metric ton ($/ADMT): $599.41Specification:Target Value (+/- 5%)
Freeness
450 ml
Grammage
75 gsm
Thickness
115 µm
Opacity
90%Brightness72%Tensile Index (machine direction)35 N-m/g Tensile Index(cross direction)15 N-m/g Burst Index1.7 kPA-m^2/gSlide6
How we did it: Procedure
-Determined our target freeness value and new stock component percentages
-Moved operations to the pilot machine where we were assisted by
Mr. Appleby
-Started operations and creating paper from our custom stockSlide7
How we did it: Procedure
-S
tock pumped from
stock chest by the fan pump into the flow spreader in the headbox.
-The headbox then produced a uniform jet of fibers which were evenly distributed across the forming wire -The recently formed paper web was conveyed along the forming wire through a dandy roll-The paper was then circulated through section of press nips and into the steam heated drying cylindersSlide8
How we did it: Procedure
- Our paper was winded on a roll which would later be measured by performing a series of TAPPI standard method tests
- Our team produced five grades of paper under conditions A, B, C, D and E
- Conditions A used no filler and B used filler
- Conditions C, D and E added a new process into the paper manufacturing line known as calenderingSlide9
How we did it: Procedure
- Physical tests performed on the
handsheets included grammage, thickness, brightness and opacity
- The destructive tests performed where
tensile strength and burst strength- These tests were all calculated following TAPPI Standards including TAPPI 220, T411, 452 and 403 respectivelySlide10
Our Results: Caliper (Thickness)Slide11
Our Results: SmoothnessSlide12
Our Results: Apparent Density Slide13
Our Results: Print Quality
In order to truly test the quality of our paper, we found it necessary to print on our product from condition E so you can see the print quality in front of youSlide14
Our Results: Overall
Specification:
Target Value (+/- 5%)
Condition E
Percent ErrorFreeness
450 ml
Grammage
75 gsm
75.33 gsm
0.4%
Thickness
115 µm
126.48 µm9.08%Opacity90%96.27%7.0%Brightness72%72.91%1.3%Tensile Index (machine direction)35 N-m/g
33.84 N-m/g
3.3%
Tensile Index
(cross direction)
15 N-m/g
16.96 N-m/g
13.1%
Burst Index
1.7
kPA*m^2/g
1.68
kPA*m^2/g
1.1%Slide15
Our Results: Overall
Sample E had the best results, this graph shows the % error from our product, and the desired product properties.
Error
Grammage: 0.44%
Burst Index: 1.09%Tensile MD: 3.32%Brightness: 1.26%Opacity: 6.97%Tensile CD: 13.08%Thickness: 9.08%Slide16
Why The Paper Savages are the right pick for you!
Capable of producing a paper product that was close to the required specifications of our target furnish.
Have the ability to consistently produce a paper grade that meets most specifications of physical properties
Ability to analyze different portions of the paper manufacturing process
We understand that we are in constant need of improvement, and will not not stop working towards a better grade of paperSlide17
Summary
Gained the Skills needed to produce paper in the Pilot Plant
After comparing all 5 samples, E was by fair the Best choice
4/7 Of target specs were made, with the other 3 being a few Percent away
Ability to analyze the process and make alterations has been gainedWe have grown as a group and improved our engineering ability