Papers Used in Packaging Explained — Types & Key Specifications | GPN
Paper is one of the most-used materials in packaging — boxes, cartons, sacks, bags, wraps, labels and laminates all start with the right paper or board. This short, no-jargon guide explains the main types of packaging paper and how to read their key specifications, using clear diagrams, sketches and animations (light music, no voice-over).
Part 1 walks through the paper types — kraft, kraftliner vs testliner, the fluting medium, corrugated board and flute profiles A–F, cartonboard grades (FBB, SBS, SUS/CUK, WLC), MG & greaseproof, and barrier/coated papers. Part 2 explains the specs that decide strength, protection, print and cost — GSM, caliper & bulk, burst (BF/Mullen), crush (ECT · RCT → BCT), Cobb (water), tensile & stretch, brightness & smoothness, porosity, grain & moisture, and coating & grease (Kit) — and ends with a one-screen spec checklist.
CHAPTERS
0:00 Intro — paper is everywhere in packaging
0:21 Part 1 · Types — Kraft paper
0:40 Kraftliner vs Testliner (linerboard)
0:54 The fluting / corrugating medium
1:06 Corrugated board
1:19 Flute profiles A–F
1:35 Cartonboard grades (FBB · SBS · SUS/CUK · WLC)
1:50 MG & greaseproof papers
2:04 Barrier & coated papers
2:17 Sourcing paper & board on the GPN App
2:31 Part 2 · Key specs — GSM / grammage
2:50 Thickness (caliper) & bulk
3:04 Bursting strength (BF / Mullen)
3:18 Crush & stacking — ECT · RCT → BCT
3:33 Cobb value (water absorption)
3:47 Tensile strength & stretch
4:01 Brightness & smoothness
4:15 Porosity, grain & moisture
4:30 Coating & grease resistance (Kit)
4:44 The paper spec checklist
5:01 Make your daily work easy — Join GPN
WHO IT'S FOR
Packaging buyers, converters, box & carton makers, paper mills & traders, brand owners and print/production teams working with corrugated, cartons, sacks, bags, labels and flexible packaging.
ABOUT GPN
Global Packaging Network puts packaging cost calculators (paper & board included), a global supplier directory, CRM, SCM and RFQ in one app — so you can price a job accurately and connect with buyers and suppliers worldwide.
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Note: figures shown (gsm ranges, flute heights, Cobb, Kit, safety values) are general industry guidance; always confirm the specification and test method for your own paper, product and press.
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