About
 
by AJ Labs
Contact Technical Support
  DISCLAIMER
This app is provided free of charge for your benefit.  Although every effort has been made to ensure its correct functioning, it is provided without warranty of any kind
 
User Guide
 
Introduction
ExperCalc is an HTML/Javascript based application optimized for use on your mobile device such as your smartphone or tablet although it can be run in any modern browser  such as Chrome, FireFox, Safari or others.
Loading ExperCalc
It is recommended that you be connected via WiFi when loading it and as it is a complex application it can take up to a minute to load. Once loaded it can be used offline as long the browser cache is not cleared. It may take up to a minute to activate due to the nature of the app engine.
Using ExperCalc
Each section of the app can be accessed by clicking on the down arrow V icon on the left of the section tab. The section will expand and any previously open section will close.
Technical Support
Technical support can be reached via email by clicking on the Contact Technical Support on the About tab. Please explain the problem as clearly as possible with screenshots if necessary.
Data Entry & Selection
There are several types of data entry methods available
Numeric data inputs have a PALE YELLOW background. Click in the cell to enter the data.
Dropdowns display downwards arrow on the right and show a list of choices when selected; click on the desired choice to select it. If the list is longer than the display window a scroll bar will be shown.
Buttons show the selected choice with a PALE YELLOW background; click on the desired choice to select it. 
Sliders change the value by sliding the control left or right. The range and increment are pre-determined. 
Interactive Charts
Charts have an interactive feature that displays the data values and label in a popup at the selected point when the chart is clicked.
AstenJohnson - PMC Products
CONVERSIONS - General
LENGTH
 
mils
inches
feet
yards
Miles
nautical miles
Microns (um)
millimeters (mm)
Centimeters (cm)
meters
Kilometers (km)
Furlong
rods
  light years
AREA
 
Sq Mils
Sq Inches (sq in)
Sq Feet
Sq Yards
Sq Miles
Acre
Sq Microns
Sq millimeters
Sq Centimeters
Sq Meters
Sq Kilometers
Hectares
VOLUME
 
Cubic Inches (ci)
Cubic Feet
Cubic Yards
teaspoon (tsp)
tablespoon (tbsp)
Fluid Ounce
cup
pint (liquid)
quart (liquid)
gallon
Barrel
acre feet
cubic millimeters
cubic centimeters (cc)
cubic meters
milliliters (ml)
liters
DRY VOLUME
 
pint (dry)
quart (dry)
peck
bushel
liter
MASS
 
Grain
Ounce (av)
Pound (av)
Ton
Troy Ounce
Troy Pound
milligram
gram
kilogram
Metric ton
POWER
1  
watt
kilowatt (KW)
Horsepower (550 ft-lb)
Horsepower (electric)
BTUs per hour
foot-pounds per second
ENERGY
 
erg
joule (watt second)
watt hour
kilowatt hour (KWH)
BTU
therm (US)
foot-pounds
calorie (heat)
calorie (food)
FORCE
1  
ounce-force
pound-force
dyne
newton
kilogram-force
TEMPERATURE
 
Degrees Kelvin
Degrees Celsius
Degrees Fahrenheit
VELOCITY
 
inches per second (ips)
feet per second (fps)
miles per second
miles per hour (mph)
knot
Furlongs per fortnight
meters per second
kilometers per second
kilometers per hour
c (speed of light)
ACCELERATION
 
inches per second per second
feet per second per second
miles per hour per second
meters per second per second
kilometers per second per second
kilometers per hour per second
G (gravitational pull)
TIME
 
picosecond (ps)
nanosecond (ns)
microsecond (us)
millisecond (ms)
seconds
minutes
hours
days
weeks
Fortnight
months (1/12th yr (365 day, except for last 2)
year (365 day)
year (leap)
year (mean)
COMPUTER 
1  
bit (b)
nibble
byte (B)
kilobyte (KB)
megabyte (MB)
gigabyte (GB)
terabyte (TB)
CONVERSIONS - PMC
 
BASIS WEIGHT
Grade Usage
Offset
News & Tissue
Liner
Bond
Market Pulp
PRESSURE
Atmosphere
Bar
dynes/cm²
in. Hg
in. Water
kg/cm²
m Water
mbar
mtorr or micron Hg
Pa or N/m²
MPa
PSI  or Ib/in²
torr or mm Hg
ROLL HARDNESS
P&J Shore A Shore D
0 100 58
10 98 52
20 95 46
30 88 36
40 82 31
50 75 25
60 71 22
70 67 20
80 63 18
90 60 16
100 57 15
110 54 14
120 51 12
130 48 11
140 46 10
160 43 9
180 40 8
200 36 7
220 33 6
240 31 6
260 29
280 27
300 25
0, 23, 68, 7, 2, 134, 91, 10
FORMING Dragload
           
   
Unit Amps Volts HP kW %
Load
 
WTR
Couch
WRR
Total 
DRAGLOAD FROM HORSEPOWER (pli)  
Total Horsepower 
Avg Fabric Speed  fpm
Avg Fabric Width  in
  * Dragload (pli)  pli
* Note drive losses assumed to be 10%      
FORMING Guide Rolls
                       
INPUTS
Select the wrap configuration:
                         
1
Top-Top-Top 5
Bot-Top-Top
                   
2
Bot-Bot-Bot 6
Top-Bot-Bot
                   
3 Top-Top-Bot 7
Bot-Top-Bot
                     
4
Bot-Bot-Top 8
Top-Bot-Top
A D F
B E G
C
H
OUTPUTS
Lead-in LEFT
RIGHT
Guide Angle IN
Guide Angle OUT
Total Guide Angle
Length IN
Length OUT
Felt Span Ratio
FORMING Jet Impingement
                             
   
*X = apron thickness + gap between bottom of headbox and top of fabric
EXISTING HEADBOX CONDITIONS
HB Head "H2O X*
Wire Speed Y
J/W ratio
Z
Z-Y
Cut thru-Should be 0.5" - Change here for Z calculations:
New Z-Y 0.5
CALCULATIONS
HB Head (@J/W=1) 
Jet speed (@curr J/W) 
J/W ratio (to compare)  J/W
Horizontal Jet speed 
J/W Difference 
J/W Diff. Horizontal 
Current Angle β  °
Vertical Force  "H2O  
Jet length 
Horizontal J/W 
REQUIRED: try different vertical forces or angles
RECOMMENDATIONS:
• Impingement angle < 4 degrees
• Vertical impingement force < 40" H2O
OPTIMAL
Y β °
Vert Force "H2O β °  
X
X
Y
Y
Z
Z
β ° Vert Force "H2O
IMPINGEMENT ANGLE and FORCE vs Y
 
 
FORMING Miscellaneous
         
THEORETICAL HEAD
Spouting Velocity: 
Head: 
APPROXIMATE SPOUTING VELOCITY
Head: 
Spouting Velocity: 
HEADBOX FLOW RATE / UNIT WIDTH
Slice Opening: 
Spouting Velocity: 
Orifice Type: 
Headbox Width:
Headbox Flow Rate :
TOTAL Headbox Flow Rate :
           
           
FIBER RETENTION
Headbox Consistency
%
Tray Consistency
%
Retention
%
FABRIC PRESSURE OVER ROLL
Fabric Tension
Roll Diameter
Pressure
FORMING BOARD SETTING
Initial Jet Velocity
Jet Angle
°
Jet to Wire Height *
Slice to Blade distance
FOIL BLADE SPACING HARMONICS
Fabric Speed
Foil Blade Spacing
Harmonic Frequency
Hz
NEW FOIL BLADE TABLE SPACINGS
Wire Speed
Required Frequency
Hz
New Spacing
FORMING Vacuum Graduation
 
Suggested Vacuum Graduations
# Units : 
Header MAX vacuum :  in Hg
Unit #
Recommended Vacuum Level (inches Hg)
 
                 
Set last box vacuum to the Header vacuum, then adjust upstream boxes according to the schedule shown                 
HIVAC Cover Guidelines
Slot Width Operating Vacuum Range
1 up to 5" Hg
0.75 5" to 9" Hg
0.625 9" to 18" Hg
0.5 above 18" Hg
MAX of 6 slots / chamber above 16% consistency
PRESS Compression Curves
WEIGHT & BASE SELECTION  
Select the weight & base combinations  
 
 
 
 
 
                       
                       
                     
                       
                     
PRESS Critical Lengths
INPUT
Felt Position  3rd Press
Felt Length  ft
Stretch - Out  in
Stretch - Left  in
Roll 1 Roll 2 Roll 3 Roll 4
D
M?
Felt will stretch 2 inches for every 1 inch a stretch roll is moved
Min Felt Length
Max Felt Length
Lengths that might cause vibration
RF - 2
RF - 1
RF
RF + 1
RF + 2
Stretch amounts that might cause vibration
RF - 2
RF - 1
RF
RF + 1
RF + 2
PRESS Miscellaneous
LINE LOAD FOR NIP IMPRESSIONS
  Vacuum
  Vacuum Box Width
  Line Load
Approx vacuum component line load for taking nip impressions
PRESS IMPULSE
  Press Line Load
  Nip Speed
  Press Impulse
               
PRESS BOND ANGLES
          Seamed Endless  
  Felt Length
  Bond Angle deg
               
PRESS FELT PINTLE SIZES
  Yarn Size (mm) Yarn Size
(in.)
# of Yarns Calc. Area (mm2) Autocad Calc Size Label  
  0.33 0.013 4 0.343 0.80 1  
  0.36 0.014 4 0.397 0.85  
  0.41 0.016 3 0.389 0.88 2  
  0.38 0.015 4 0.456 0.92  
  0.43 0.017 3 0.439 0.93 3  
  0.41 0.016 4 0.519 0.99 4  
  0.46 0.018 3 0.493 0.99  
  0.43 0.017 4 0.586 1.04 5  
  0.46 0.018 4 0.657 1.11  
  0.48 0.019 4 0.732 1.16  
  0.41 0.016 5 0.649 1.11-1.23 6  
  0.43 0.017 5 0.732 1.16-1.29 7  
  0.46 0.018 5 0.821 1.24-1.38 8  
  0.48 0.019 5 0.915 1.30-1.44  
  The Autocad Calculation takes the packing of the pintle strands into account and how they configure in their smallest form.   
               
               
         
PRESS Uhle Box Airflow & Dwell
Position 3rd Press
Uhle Box # 1
Fabric Width  in.
Total Slot Width/Open Area  in^2
Fabric Speed   ft/min
Uhle Box Dwell Time msec
Recommended Dwell Time  2-4 ms/uhle box
VACUUM CALCULATIONS
Vacuum  in Hg
Selected Pump Capacity cfm
Estimated Pump Efficiency  %
Total Slot Area  in^2
Uhle Box Airflow  cfm/sq.in.
Recommended Airflow  15-25 cfm/sq.in.
Herringbone Slot Calculations (if applicable)
Slot Angle degrees
Slot Size (S) in.
Land Size (L) in.
Pattern Width (W) in.
Open Area in^2
 
DRYER Tension
 
         
           
           
           
           
           
           
           
           
  Method:
   
Fabric Width  
Pulley Diameter  
Sprocket Diameter  
           
WEIGHT METHOD  
    Weight Diameter  
Weight Height
Weight Material
PNEUMATIC METHOD  
Cylinder Diameter
Rod Diameter
Cylinder Pressure
           
Running Tension  
DRYER Saturated Steam
      Temp from Pressure   Pressure from Temp  
      Pressure   Temperature  
     
      Temp.   Pressure  
Calculated 
Spec. Vol. Sat. Stm
Spec. Enth. of Sat. Wat
Latent Heat of Stm
Spec. Enth. of Sat. Stm
             
  Gauge Pressure Temp Specific Volume Saturated Vapor Saturated Liquid Latent Heat of Steam Saturated Vapor
  (psig) °F (ft3/lb) (Btu/lb) (Btu/lb) (Btu/lb)
V
a
c
u
u
m
25 134 142 102 1017 1119
20 162 73.9 129 1001 1130
15 179 51.3 147 990 1137
10 192 39.4 160 982 1142
5 203 31.8 171 976 1147
             
PMC Bow and Skew
       
BOW CALCULATIONS
Fabric Width
Amount of BOW
Width Loss
SKEW CALCULATIONS
  Fabric Width  
  Amount of SKEW  
  Width Loss  
PMC Materials
SAFE pH OPERATING RANGES
ACIDIC
ALKALINE
1 2 3 4 5 6 7 8 9 10 11 12 13 14
Kynar (PVDF)                            
Polyproylene (PP)                            
Polyester (PET)                            
Polyamides (PAM)                            
Polyphenylene Sulphide (PPS)                            
Polyetherether ketone (PEEK)                            
                               
                               
TEMPERATURE & CHEMICAL RESISTANCE
                               
  Poor Fair Good Very Good Excellent  
  1 2 3 4 5  
                               
    Temp Mineral Acids Alkalis Solvents Oxidizing Hydrolysis    
Kynar (PVDF) 5 5 5 5 4 5    
Polyproylene (PP) 1 5 5 5 3 5    
Polyester (PET) 3 2 2 3 3 1    
Polyamides (PAM) 3 3 2 5 4 3    
Polyetherether ketone (PEEK) 5 5 5 5 5 5    
Aramid 5 1 3 2 2 3    
Homopolymer Acrylic 3 3 2 4 3 5    
Polyphenylene Sulphide (PPS) 4 5 5 4 1 5    
PTFE (Teflon) 5 5 5 5 5 5    
Fiberglass 4 4 2 4 5 5    
                               
 
PMC Miscellaneous
FIBER RETENTION
Headbox Consistency %
  Tray Consistency %
  Retention %
TENSION POWER
Fabric Speed
Fabric Tension
  Fabric Width
  Tension Power kW
FABRIC PRESSURE OVER ROLL
Fabric Tension
  Roll Diameter
  Pressure psi
DRAG LOAD
Total Volts V
Total Amps A
Fabric Speed
  Fabric Width
  Drag Load
PMC CYCLES
Speed
Fabric Length
Days Run
  Nips/cycle   
  Cycles @ 24 hrs  
   Cycles over Total Life  
PMC Showers
FLOODING NIP SHOWER
Fabric Speed    
Fabric Width    
Fabric Caliper   
Fabric Void Volume  %  
Required Flow 
                 
    Speed  
Flow
NEEDLE SHOWER OPTIMIZATION
 
             
FABRIC INFORMATION
Fabric length
Fabric Speed
Time per Revolution sec
SHOWER INFORMATION
Nozzle size
Nozzle spacing
Shower Stroke 12.00
OPTIMAL SHOWER SPEED
Oscillator Speed
Time for full cover hh:mm:ss
Revs for full cover
FAN NOZZLE COVERAGE
Distance to fabric in
Nozzle Spacing in
Required Fan Angle
for SINGLE Coverage  degrees
for DOUBLE Coverage  degrees
                 
Graph is approximate
PMC Tensometer
         
           
HUYCK/WEAVEXX TENSOMETER READING
           
 
           
      pli   kN/m
CentraFlow
PrintStar, ExFT, SF
InTegra
PacStar
TENSION CONVERSIONS
      pli   kN/m
    pli to kN/m :   
      kN/m   pli
    kN/m to pli :   
Note: N/mm is equivalent to kN/m
PMC Trim Squirts
IMPERIAL
SHEET BASIS WEIGHT
#/1000ft²  10.0 13.3 16.7 20.0 23.3 26.7 30.0 33.3 36.7 40.0 43.3
#/3000ft² 
#/3300ft² 
g/m²  48.8 65.1 81.4 97.6 113.9 130.2 146.4 162.7 179.0 195.2 211.5
ft/min ORIFICE SIZE (in.)  &  PRESSURE (psi)
S
I
N
G
L
E
1000 0.020 0.024 0.024 0.028 0.028 0.031 0.031 0.031 0.035 0.035 0.035
132 135 147 146 155 153 160 167 163 169 174
1500 0.020 0.020 0.020 0.024 0.024 0.028 0.028 0.028 0.031 0.031 0.031
198 222 242 237 252 123 128 134 130 134 139
D
U
A
L
2000 0.016 0.016 0.016 0.016 0.016 0.020 0.020 0.020 0.024 0.024 0.024
148 165 180 194 206 194 203 211 200 207 214
2500 0.016 0.016 0.016 0.016 0.016 0.020 0.020 0.020 0.024 0.024 0.024
185 207 225 242 257 242 254 264 250 259 267
3000 0.016 0.016 0.016 0.016 0.016 0.020 0.020 0.020 0.024 0.024 0.024
222 248 271 291 309 291 304 317 301 311 321
3500 0.016 0.016 0.016 0.016 0.016 0.020 0.020 0.020 0.024 0.024 0.024
259 289 316 339 360 339 355 370 351 363 374
4000 0.016 0.016 0.016 0.016 0.016 0.020 0.020 0.020      
296 331 406 388 412 388 406 423      
4500 0.016 0.016 0.016 0.016 0.016 0.020 0.020 0.020      
333 372 406 436 463 436 457 476      
5000 0.016 0.016 0.016 0.016 0.018            
370 414 451 485 485            
5500 0.016 0.016 0.018 0.018 0.018            
407 455 468 503 534            
6000 0.016 0.018 0.018 0.018 0.018            
444 468 511 548 582            
6500 0.014 0.018 0.018                
514 507 553                
                         
METRIC
    SHEET BASIS WEIGHT
#/1000ft²  10.0 13.3 16.7 20.0 23.3 26.7 30.0 33.3 36.7 40.0 43.3
#/3000ft² 
#/3300ft² 
g/m²  48.8 65.1 81.4 97.6 113.9 130.2 146.4 162.7 179.0 195.2 211.5
  m/min ORIFICE SIZE (mm)  &  PRESSURE (bar)
S
I
N
G
L
E
305 0.50 0.60 0.60 0.70 0.70 0.80 0.80 0.80 0.90 0.90 0.90
9.1 9.3 10.1 10.1 10.7 10.5 11.0 11.5 11.2 11.6 12.0
457 0.50 0.50 0.50 0.60 0.60 0.70 0.70 0.70 0.80 0.80 0.80
13.6 15.3 16.7 16.3 17.4 8.5 8.8 9.2 9.0 9.2 9.6
D
U
A
L
610 0.40 0.40 0.40 0.40 0.40 0.50 0.50 0.50 0.60 0.60 0.60
10.2 11.4 12.4 13.4 14.2 13.4 14.0 14.5 13.8 14.3 14.7
762 0.40 0.40 0.40 0.40 0.40 0.50 0.50 0.50 0.60 0.60 0.60
12.7 14.3 15.5 16.7 17.7 16.7 17.5 18.2 17.2 17.8 18.4
914 0.40 0.40 0.40 0.40 0.40 0.50 0.50 0.50 0.60 0.60 0.60
15.3 17.1 18.7 20.1 21.3 20.1 20.9 21.8 20.7 21.4 22.1
1067 0.40 0.40 0.40 0.40 0.40 0.50 0.50 0.50 0.60 0.60 0.60
17.8 19.9 21.8 23.4 24.8 23.4 24.5 25.5 24.2 25.0 25.8
1219 0.40 0.40 0.40 0.40 0.40 0.50 0.50 0.50      
20.4 22.8 28.0 26.7 28.4 26.7 28.0 29.1      
1372 0.40 0.40 0.40 0.40 0.40 0.50 0.50 0.50      
22.9 25.6 28.0 30.0 31.9 30.0 31.5 32.8      
1524 0.40 0.40 0.40 0.40 0.45            
25.5 28.5 31.1 33.4 33.4            
1676 0.40 0.40 0.45 0.45 0.45            
28.0 31.3 32.2 34.7 36.8            
1829 0.40 0.45 0.45 0.45 0.45            
30.6 32.2 35.2 37.8 40.1            
1981 0.35 0.45 0.45                
35.4 34.9 38.1                
PMC Water Removal
Basis Weight
Machine Width
Machine Speed    
SHEET CONSISTENCIES
Headbox %      
Off-Couch %
Press Exit %
Final Sheet %
WATER AMOUNTS
g/m²
From Headbox
Entering Press  
Exiting Press
at the Reel
WATER REMOVED BY SECTION
g/m²
Forming
Press
Dryer
Total Sheet Water Removed
gal/min
l/min
PRESS SECTION DETAILS
Nip width
# of felts
Nip residence time ms
Water removal rate
ShowerSim Lite
Weir Flow
RECTANGULAR WEIRS
Head on Weir (H) : 
Length of  Opening (L) : 
Flow rate :
  RECOMMENDATIONS
    L : should be 4 to 8 times H 
  H : measure ~6 ft ( 2 m) back from weir opening
NOTCHED WEIRS
Head on Weir (H) : 
Flow rate for 90° notch 
Flow rate for 60° notch