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ASIAN PACKAGINGIndustries · Vapi

What is Burst Factor (BF) and Why is it Important?

Bursting strength tester used to determine Burst Factor
Bursting strength tester used to determine Burst Factor

Burst Factor (BF) is one of the most important quality parameters used in the corrugated packaging industry. It measures the strength of kraft paper by determining how much pressure it can withstand before bursting. In simple terms, a higher Burst Factor indicates stronger paper, which results in more durable and reliable corrugated boxes.

BF plays a vital role in determining whether a corrugated box can safely protect products during handling, stacking, transportation, and storage. At Asian Packaging Industries, every batch of kraft paper is tested for Burst Factor before production to ensure consistent packaging quality and dependable performance.

What Does Burst Factor Measure?

Burst Factor indicates the paper's resistance to rupture when pressure is applied.

It helps evaluate the paper's ability to:

  • Resist external pressure
  • Handle rough transportation
  • Support stacking loads
  • Protect products from damage
  • Maintain structural integrity during shipping

A higher BF generally means stronger paper and improved packaging performance.

Why is Burst Factor Important?

Selecting the correct Burst Factor is essential because it directly affects the durability of the corrugated box.

Proper BF helps provide:

  • Better product protection
  • Higher box strength
  • Improved transportation safety
  • Better warehouse stacking
  • Reduced carton failure
  • Lower product damage
  • Greater customer satisfaction

Using paper with insufficient BF may result in box deformation, bursting, or product damage during transportation.

Common Burst Factor Grades

Different products require different BF grades depending on their weight and application.

Some commonly used BF grades include:

  • BF 16 – Lightweight packaging
  • BF 18 – FMCG and consumer goods
  • BF 20 – Pharmaceutical and general industrial packaging
  • BF 22 – Heavy-duty industrial packaging
  • BF 24 & Above – Export packaging and heavy engineering products

The ideal BF is selected based on the product's weight, transportation conditions, and required box strength.

Does a Higher BF Always Mean Better Packaging?

Not always.

Although higher BF paper provides greater strength, Burst Factor is only one part of the overall packaging design.

Other important factors include:

  • GSM (Grams per Square Meter)
  • Flute Type
  • Board Construction (3 Ply, 5 Ply, or 7 Ply)
  • Edge Crush Test (ECT)
  • Box Compression Test (BCT)
  • Moisture Resistance
  • Product Weight

The most effective packaging solution combines all these parameters rather than relying solely on a higher BF.

How We Select the Right Burst Factor

Our packaging engineers carefully evaluate several factors before recommending the appropriate BF.

These include:

  • Product dimensions
  • Product weight
  • Transportation distance
  • Export or domestic shipment
  • Warehouse stacking height
  • Moisture conditions
  • Customer budget

This engineering-based approach ensures customers receive packaging that provides the right level of protection while optimizing material costs.

How We Test Burst Factor

At Asian Packaging Industries, every batch of kraft paper is tested in our in-house quality laboratory.

Our BF testing helps us verify:

  • Paper strength
  • Material consistency
  • Manufacturing quality
  • Suitability for specific packaging applications

Only raw materials that meet our quality standards are approved for production.

Why Choose Asian Packaging Industries?

At Asian Packaging Industries, we believe that high-quality packaging starts with high-quality raw materials. By carefully selecting premium kraft paper and conducting rigorous Burst Factor testing, we ensure that every corrugated box delivers consistent strength, durability, and reliable protection.

With six advanced manufacturing plants, premium kraft paper, automatic corrugation and converting lines, imported Heidelberg 5-Colour + Coater printing technology, and a fully equipped in-house quality testing laboratory, we manufacture customized corrugated packaging solutions designed to meet the highest industry standards.

Whether you require packaging for pharmaceuticals, FMCG, engineering products, electronics, chemicals, or export shipments, our experienced team recommends the ideal Burst Factor and board construction to ensure maximum protection and cost efficiency.

Need help selecting the right Burst Factor for your corrugated packaging? Contact Asian Packaging Industries today for expert packaging consultation and customized solutions tailored to your products and transportation requirements.