Stop guessing on corrugated burst strength and EPR liabilities. The definitive technical hub for packaging engineers, designers, and compliance officers navigating ISTA protocols and sustainable material transitions.
UK Plastic Tax Rate (2024)
Amazon SIOC Certification
EU PPWR Recyclability Target
McKee Formula Constant
Technical specifications for corrugated board grades, bioplastics, molded pulp, and barrier coatings.
Navigate complex EPR (Extended Producer Responsibility) schemes, plastic taxes, and food-contact regulations.
Optimize pallet efficiency, reduce dimensional weight (DIM), and design die-cut structures that survive transit.
Protocols for drop testing, vibration analysis, and compression testing to certify packaging for transit.
The structural integrity of a carton is defined by its flute profile and linerboard basis weight. Selecting the wrong grade doesn't just increase costs—it guarantees transit failure under dynamic load.
Stop using ad-hoc spreadsheets. Our suite of open-access tools allows engineers to quickly estimate compression strength, pallet yield, and carbon footprint based on standardized formulas.
Estimate Box Compression Test strength from ECT and dimensions.
Calculate area efficiency for standard GMA and Euro pallets.
Estimate taxation based on recycled content thresholds.
Mandatory data reporting for organizations with £1M+ turnover handling 25+ tonnes of packaging.
PET bottles must contain at least 25% recycled plastic. Tethered caps become mandatory.
All packaging placed on the EU market must be recyclable by design. Minimum PCR targets enforce across plastic formats.
Good packaging design is invisible. Bad packaging design destroys product, inflates freight costs, and alienates customers. Focus on these three metrics.
Carriers charge by size, not just weight. A 2-inch reduction in a carton's height can slice 15% off parcel shipping costs instantly.
Excess empty space compromises structural rigidity. If a box is 40% air, it requires disproportionate secondary fill (air pillows, kraft paper) to prevent crush.
Static stacking strength (BCT) in a lab doesn't equal transit survival. You must account for humidity, pallet overhang, and vibration fatigue.
By switching from a standard 32 ECT C-Flute Regular Slotted Carton (RSC) to a 44 ECT B-Flute Half-Slotted Carton (HSC) with a rigid lid, a client achieved:
Packaging isn't just a cost center; it's a structural liability matrix. Understanding the hard numbers is required for modern engineering.
The UK Plastic Packaging Tax rate for packaging manufactured in, or imported into the UK, that does not contain at least 30% recycled plastic.
Read the UK PPT Guide →The average product damage rate in e-commerce fulfillment without ISTA 6-Amazon SIOC (Ships in Own Container) certification.
View ISTA Protocols →The average volume of empty space (void) shipped in standard B2C parcels, severely impacting Dimensional Weight (DIM) pricing.
Optimize DIM Weight →Definitions you actually need to know.
A test measuring the bursting strength of paperboard, indicating its ability to withstand puncture.
A process using a steel-rule die to cut, score, and crease flat material into complex custom shapes (e.g., mailer boxes).
Post-Consumer Recycled content. Material that has served its intended use and been recovered from the waste stream.
The weight of a given area of paperboard. In the US, expressed as pounds per 1,000 square feet (MSF).
"Biodegradable" means nothing without a timeframe and condition. "Compostable" usually means industrial facilities, not backyards. Read our guide on objective sustainability metrics.
Read the Sustainability FrameworkBurst (Mullen) Test: Measures the force required to puncture the face of corrugated board. It relates directly to the material's ability to withstand rough handling and internal/external pressures. Measured in pounds per square inch (psi).
Edge Crush Test (ECT): Measures the edgewise compressive strength of the board. It is a direct indicator of stacking strength (Box Compression Test) rather than puncture resistance. Measured in pounds per lineal inch (lb/in).
While historically Burst was the standard, ECT is now preferred for supply chains where stacking (palletization) is the primary concern.
Under FDA (US) and EFSA (EU) regulations, Food Contact Materials include any material or article intended to come into contact with food, already in contact with food, or which can reasonably be expected to transfer constituents to food under normal use.
This includes packaging, processing machinery, containers, and even inks/adhesives on the non-contact side if migration through the substrate is possible (functional barrier requirement).
Extended Producer Responsibility (EPR) shifts the financial and physical responsibility of packaging end-of-life (recycling/disposal) from municipalities back to the producers (brands/importers).
Eco-modulated EPR fees mean you pay more for hard-to-recycle materials (like multi-layer flexible films, PVC, or carbon black plastics) and less for widely recyclable mono-materials (like clear PET or corrugated cardboard). Designing for recyclability is now a direct financial imperative, not just a marketing claim.
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