Blister Material Requirement Calculator
Plan running length and separate forming and lidding weights for a target blister-pack quantity, with a gross-input waste allowance.
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Enter your values
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Replace the example values with figures from your supplier sheet or measurements. Choose the unit beside each value. Results update as you type; fix any highlighted field before using the result.
GSM means grams per square metre. Net weight excludes the core and other packaging. MOQ means the minimum order quantity. An optional field can stay blank unless the result you need depends on it.
Prices keep the selected currency; changing its label does not convert an exchange rate. Save or export the result after checking your inputs.
Help with common web width
Measure the full width of the flat material from edge to edge, rather than the width of one finished pack. Choose the matching unit.
Help with process loss on gross input
Use a measured or supplier-confirmed percentage where possible. Check whether it applies to gross input or finished output; the formula below shows the basis used here.
Total gross forming and lidding material
Waste is a fraction of gross input lost. Gross requirement = good output ÷ (1 − waste/100).
This planning model assumes equal forming and lidding web widths and pitches. Add fixed startup losses separately; requirements are continuous gross material, not complete-machine-cycle rounding.
Length = target packs ÷ (1 − waste/100) ÷ packs across × pitch; each web kg = length × width × its GSM ÷ 1,000
10,000 ÷ (1 − 5/100) ÷ 3 × 0.1 = 350.877193 m; 105.2631579 × (350 + 60) ÷ 1,000 = 43.15789474 kgSaved calculations stay in this browser. No account or cloud backup is created.
Save to a product project (optional)
Choose or create a saved product project ↗This is an illustrative example. Saved or transferred values must be checked against your job.
Calculated from your inputs. Confirm specifications with your supplier.
How sensitive is this result to your assumptions?
Vary one input and inspect total gross forming and lidding material
All other entered inputs stay fixed. Ranges are your scenarios, not statistical confidence or supplier performance predictions. This uses the same validated calculator engine.
The formula, made clear.
A pitch-and-across layout connects pack count to running web length. This planning model uses one common width and pitch for the forming and lidding streams. Their shared area is multiplied by each material’s own GSM to calculate separate masses. Keeping those weights distinct helps purchasing order the two stocks, while the total expresses the combined material requirement.
How to use this calculator
- 01
Enter target good packs, common pitch and finished packs across.
- 02
Enter the common web width and separate forming and lidding basis weights.
- 03
Enter process waste and review length plus the two material weights.
A calculation you can check
The example translates a blister order into running-web demand and separate forming-stock and lidding-stock mass requirements.
- Target good packs
- 10000 units
- Common web width
- 300 mm
- Machine pitch
- 100 mm
- Packs across
- 3 units
- Forming web GSM
- 350 g/m²
- Lidding GSM
- 60 g/m²
- Process loss on gross input
- 5 %
10,000 ÷ (1 − 5/100) ÷ 3 × 0.1 = 350.877193 m; 105.2631579 × (350 + 60) ÷ 1,000 = 43.15789474 kgCheck the displayed formula and units against your quotation. Use measured GSM, net weight and actual layout dimensions where available. Default densities are planning assumptions, not certified material properties. Calculated cost does not certify strength, compatibility or safe loading.
Method, units and material assumptions ↗