Page 16 - Demo

PAPER & BOARD FORMULASPaper formulas are essential tools in the printing and publishing industries, helping professionals calculate costs, weights, and dimensions with precision. These formulas simplify complex pricing and sizing decisions, making it easier to manage budgets and select the right materials for any project. Whether you%u2019re determining the cost per sheet, price per kg, or calculating running metres on a reel, understanding these calculations ensures efficiency and accuracy in production planning. Below, we explore step-by-step examples of key paper formulas to guide your calculations. Formula using the below size and price:Paper weight (gsm): 80gsmSheet size: 640mm x 915mmPrice per tonne: R 20 000.00HELPFUL CALCULATIONSTo find the weight of 1 000 sheetsFormula:Calculation:Result: Weight per 1 000 sheets = 46.85kgWeight per 1 000 sheets (kg)1. Convert sheet size to metres: 640mm = 0.64mm, 915mm = 0.915m Sheet area= 0.64m x 0.915m = 0.5856m2 2. Apply Formula: Weight per 1 000 sheets = 0.5856m2 x 80gsm x 1 000/1 000 = 46.848kg= Sheet area (m2) x gsm x 1 0001 000Sheet Price per Tonne PriceFormula:Calculation:Result: Sheets per tonne = 21 347 sheetsSheets per tonne = 1 000Weight per 1 000 sheets (kg)Sheets per tonne = 1 000 21.347 sheets46.848Sheet Price from Tonne PriceFormula:Calculation:Result: Sheets price = R0.94 per sheet Sheets price (R) = Tonne Price (R)Sheets per tonneSheets price = 20 000 R0.937 per sheet21 347Running metres on a reelFormula:Example:Result: Running metres = 19 531.25mRunning metres (m) = Reel weight (kg) x 1 000Reel width (m) x gsm Running metres = = 1 000 x 1 000 19 531.25 m0.64 x 80Tonne price from sheet priceFormula:Calculation:Result: Tonne price = R20 066 Tonne price (R) = Sheet price (R) x Sheet per tonneAssume the sheet price is R0.94 per sheet:Assume the reel weight is 1 tonne (1 000kg), gsm = 80 gsm, and reel width = 0.64m:Tonne price = 0.94 x 21 347 R20 066Square metres on a reelFormula: If the reel width = 640mm = 0.64m,and running metres are known, you can directly calculatethe total square metres by multiplying. Square metres (m2)=Reel width (m) x Running metres (m)116