Reference data for common glasses and mold metals, plus thermal expansion / shrinkage calculation.
OpenTypical glass-mold alloys: grade, hardness, conductivity and selection guidance (compiled from EN standards and industry data).
OpenEstimate linear contraction and convert finished-part dimensions into mold cavity dimensions.
OpenRelate the parison (blank) to the blown container through radial blow-up and axial stretch ratios; check feasibility and size the blank cavity.
OpenCompute gob drop frequency, cut interval and glass pull from production speed or from required pull; match the feeder to the IS machine.
OpenSize the virgin raw-material batch (sand, soda ash, limestone…) for a target glass weight, with cullet (recycled glass) substitution plus estimates of batch-oxide composition and the CO₂ released from the carbonates.
OpenFirst-order annealed-glass shock limit ΔT ≈ σ/(E·α). Low-CTE glasses (borosilicate, glass-ceramic) tolerate the largest ΔT.
OpenSealing dimensions, thread OD, neck-ring bore and neck glass weight; aligned with ISO 12821 / DIN 168-1 / CETIE GME.
OpenEstimate gob volume, press cavity and plunger, and the press force for press-formed glass (tumblers, wide items).
OpenEstimate heat that must be removed from the formed glass and the cooling-air requirement.
OpenCompares the residence time the glass needs in the annealing (critical) and fast-cooling zones to what the lehr physically provides from belt speed, and reports whether cooling is over-fast with an over-rate index.
OpenConvert engineering units used in the glass-mould trade — pick a category, enter a value and its unit, then read every equivalent on the fly.
OpenTypical glass container geometries with capacity, glass weight and weight-per-capacity ratio; load a shape into the Bottle calculator or budget target weight from capacity.
OpenAmortise a mould set (box) over its service life: how many articles one box yields, the tooling cost they carry, and how many replacement sets a year of production needs.
OpenChoose a colourant oxide and a batch-lot weight to weigh the exact addition per lot, with a dosage reference and common colour recipes.
OpenRapid reference for the common container-glass defects — appearance, likely cause and corrective action — grouped by family.
OpenEstimate how many round bottles fill a case, how the cases fit a pallet (best orientation), how many layers stack within the height limit, and the gross pallet weight.
OpenSeveral furnaces draw exhaust through one common flue stack under a single suction. Each induced-draft fan delivers its own flow against that head, so this apportions the shared draft energy, cost and CO₂ to each furnace.
OpenFit the Vogel-Fulcher-Tammann curve through a glass grade’s reference viscosity points, convert between temperature and viscosity, and check where the glass is formable.
OpenCompare current vs target glass per capacity and estimate the mass, melt-energy and CO₂ savings from making the container lighter.
OpenDose hot-end metal-oxide (SnO₂/TiO₂) strength coating and cold-end wax lubricity coating, with annual consumption from bottle throughput.
OpenEstimate the dimensional spread a glass feature shows over the forming-temperature window, then convert a mean/σ measurement into a process-capability (Cpk) and ppm figure, and find how many bottles you must inspect to catch a defect.
OpenBuild up a single-bottle cost from batch material, melt energy, forming (forehearth), coatings and packing, then read the landed total and the per-1,000-bottle figure.
OpenModel a mould set's life as a Weibull distribution: enter the characteristic life η and shape β, then read reliability at any run length, B10/B50/mean life and the preventive-maintenance interval.
OpenTrack container yield through the cold-end stages (forming, annealing, coating, inspection), evaluate an acceptance-sampling plan, and size trace batches from the packaging grouping.
OpenCompares natural stack draft with the target crown pressure and estimates the heat lost through door gaps.
OpenBrowse common forming defects by stage, their likely causes and corrective actions, and quantify what cutting the reject rate recovers in tonnes and value.
OpenEstimate forming-line throughput from the IS machine cycle: gobs per cycle, cycles per day, gross/net bottles per day, glass pulled per day and the days a given order needs at the line efficiency.
OpenSizes the cooling-air flow the mold heat load needs, computes per-mold heat flux, then estimates the mold life cycles and annual replacement cost from the heat-flux history.
OpenBalances annual ordering cost against holding cost for one raw material: EOQ = √(2DS/H).
OpenSizes the belt for bottle throughput: bottles per second, the belt speed required to carry them at a given spacing, the capacity limit and resulting line utilization.
OpenOptimizes cartons per layer over both orientations, counts layers within stacking height, bottles per pallet, and the number of pallets an order requires.
OpenCompares carton volume and weight against container volume and maximum payload, giving volume, weight and combined (effective) load factors.
OpenFinds the smallest sample such that a lot at the AQL defect level is rejected with the chosen confidence, gives sample/reject numbers and a verdict from defects found.
OpenPareto-ranks defect categories by quantity, computes per-category loss rate and share, the cumulative share, loss value and the overall yield.
OpenCompares the bottle demand flow with each stage's capacity and flags the bottleneck.
OpenCompares the forming temperature with the liquidus temperature; a narrow or negative window risks devitrification on the bottle line.
OpenHot-cold ΔT endurance test with pass rate and reserve margin against the specified endurance.
OpenConverts a measured burst pressure into a safety factor versus the service (filling) pressure and grades the container.
OpenFrom a sample of measured dimensions gives mean, spread, CpK and the yield inside the tolerance band.
OpenChecks finish flatness against the sealing tolerance and the applied sealing pressure and spec, plus the leak-test pass rate.
OpenShewhart X̄-R control limits from subgroups, flagging points beyond 3σ on the grand-mean and range charts.
OpenHypergeometric operating-characteristic curve for a single sampling plan: acceptance probability vs lot defect rate, with producer's and consumer's risks.
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