?Estimate annual CLT billet production for a cold press.
Operating Data sets the schedule, breaks, downtime, lost time and press/billet size. Production Data sets the lamella size, trim allowances, layup, glue spreading and press cycle times.
Production Outputs show billet geometry, press cycle times, available and production hours, net volume, fibre loss and billet throughput.CLT Cold Press Production Capacity Calculator
Gray boxes are editable cells; all others are calculated.
CLT Cold Press Production Capacity Calculator
Operating Data
?Min 40, max 52.Operating weeks per year
Statutory holidays per year
?Hours for day shift and afternoon shift. Typically 8 hours. Min 7.5, max 12 hours. For 2 shifts, combined hours cannot exceed 16. 3rd shift, if selected, will be calculated based on remaining hours available after regular shifts.Hours per regular shift
hrs
?A lunch break is calculated every 4 hours. For example a 9 hour shift would require another lunch break.Lunch break
min
?A shift break is calculated every 2 hours (not including lunch break).Shift break
min
?Number of operating shifts per day: 1.0, 2.0, 2.5 or 3.0. 2.5 runs half of a 3rd shift. 2.5 or 3.0 can only be selected if regular shift hours are 8 or less.Operating shifts per day
?Efficiencies are lost on 3rd shift due to less cleanup and maintenance time. This only applies if 2.5 or 3.0 shifts are selected.Efficiency loss on 3rd shift
%
?The % of available time that there is an order file for production. >=80 and <=100.Order file booked
%
?Percentage of production hours lost to unplanned downtime, maintenance, etc. >=0 and <=25.Operational downtime
%
?Time lost waiting for lamella. >=0 and <=25.Waiting on downstream
%
?Time lost waiting for press outfeed, CNC, etc. >=0 and <=25.Waiting on upstream
%
?Press length must be >= billet length.Press length
m
?Press width must be >= billet width.Press width
m
?Net billet length. For double length billets the total billet length must be <= press length.Billet length
m
?Net billet width.Billet width
m
Ply
Production Data
?Lamella thickness after planing. Final lamella thickness to the press.Lamella thickness
mm
?Lamella width after planing. Final lamella width to the press.Lamella width
mm
?Kerf on the flying cut off saw.Lamella cut off saw kerf
mm
?Square up amount for each edge of the billet.Square up allowance
mm
?Allowance for each side for layer widths to prevent the layer squeeze from hitting the ends of the perpendicular layer lamella.Squeeze allowance
mm
?Time to pick up layer and place under glue spreader.Layer layup time
sec
?The distance the glue spreader will travel in one minute.Glue spreader speed
m/min
?1 if the glue spreader is full press width, 2 if half width.# of passes for glue spreader
?The speed of moving the billet into the press or out of the press.Load/unload speed
m/min
?Total time it takes to squeeze the layers, pressurize the platen and open the platen at the end of the press charge.Squeeze/release time
sec
?Average time press is empty between charges.Press empty time
min
?Ratio of glue cure time to open time. Open time starts when the last glue layer is applied.Glue cure ratio
?% of charges that have double stacked billets. >=0 and <=100.Double billet stacked frequency
%
Production Outputs
Billet thickness
175.000mm
Lamellae per major layer
25
Lamellae per minor layer
81
Major lamella length
10.925m
Minor lamella length
3.275m
Layup time per press charge
4.6min
Cure time per press charge
11.6min
?Total hours including breaks (except lunch breaks).Available hours per year
3,968hrs
?Available production hours net of breaks, downtime and lost time due to lack of order file.Production hours per year
2,305hrs
?Equipment availability net of breaks, downtime and lack of order file.Operational readiness
58%
?Net volume after all trim loss.Net volume per year
27,486m³
?Volume per hour based on total available hours. The total hours are the shift hours not including lunch break.Volume per available hour
6.93m³
?Volume per hour based on production hours available (after breaks and downtime).Volume per production hour
11.92m³
Billets per available hour
1.12
Billets per production hour
1.92
Fibre loss
1,089m³
Fibre loss
4.0%