What is bursting factor in paper?

What is bursting factor in paper?

It is defined as the maximum pressure on the paper surface or paperboard in a perpendicular direction, required to rupture the paper. It is the strength characteristic of paper and estimates the behaviour of the packing in the process of transit like handling, loading and unloading.

What is bursting strength of carton?

Burst-Test (aka Mullen Test) is the force of pounds per square inch required to rupture – or burst – the side of a corrugated box. This method indicates the box’s ability to withstand external or internal forces, and how the box will contain its contents during rough handling.

What is burst strength of paper?

A property of paper or paperboard used in packaging that measures its resistance to rupturing, defined as the hydrostatic pressure needed to burst a paperboard sample when it is applied uniformly across its side.

How do you calculate the bursting strength of a carton box?

The diaphragm is expanded using hydraulics and as the diaphragm expands, the corrugated board bursts under pressure. We measure the bursting strength in Kilograms per square centimetre. The Bursting factor is given as a thousand times the bursting strength, divided by the grammage of the board.

What is GSM in carton box?

The term gsm is an abbreviation of Grams per Square Meter.

What is burst factor in Kraft paper?

Burst Factor – Bursting strength is the most widely used strength parameter for kraft paper. It is believed to be indicative of the resistance of paper of Bursting Forces found in transit or in storage. Burst Factor equals Bursting Strength divided by grammage.

What is GSM and BF in paper?

The quality of the paper used to manufacture the Carton boxes depends on the GSM & the Burst Factor measurement of the Paper. Its obvious the paper with the higher GSM & BF will have the better strength than the paper with the lower values. So you can decide based on the product to be packed inside the box.

What is meant by bursting force?

noun. the capacity of a thing or substance to resist change when under pressure. the pressure required to break down the resistance of a substance.

How do you calculate box strength?

The best way to calculate Bursting Strength of a 5 Ply Corrugated…

1. The best way to calculate Bursting Strength of a 5 Ply Corrugated Box.
2. Burst factor = Burst strength (gf/cm2) / Grammage (grams/m2)
3. Burst Index = Burst strength (kPa) / Grammage (Kg/m2)

How do you increase burst factor in paper?

It increases by using of long fiber, wet and dry strength additives, sizing chemicals etc. Bursting properties also increases with the degree of refining due to fiber to fiber bonding improvement. On the other hand it decreases by increased filler materials, secondary fiber and dried pulp.

How is bursting strength determined?

Bursting strength is usually quoted in kPa. We determine bursting strength using a digital hydraulic paper or digital hydraulic board burst tester as shown below. Burst index (kPa. m2/g) = burst strength/basis weight.

What does 300 GSM paper mean?

210-300 gsm – This thicker type of paper is stiffer but still bendable. You’ll see it used for some magazine covers and higher-quality flyers. 350-450 gsm – The highest GSM paper is pretty much cardstock. This is the stiffest, sturdiest paper and is used for business cards and invitations.

How to calculate the bursting factor of paper?

The formula to calculate the bursting factor of the paper or cardboard is mentioned below. Burst factor = Bursting strength (gf/cm2) / Grammage (gf/m2) To determine the bursting strength of the material, first, you need to have Bursting Strength Tester.

What makes the bursting factor of a carton?

Bursting strength of carton reflects the circulation in the process of handling, loading and unloading, impact and tear strength capacity, is one of the comprehensive evaluation of the performance of the carton. Factors of affecting fracture strength:

Why is the bursting factor important in packaging?

In addition to providing cushioning effect, the corrugated paper also increases the strength of the boxes. Importance of bursting factor in packaging. The bursting factor helps to determine the durability of the corrugated boxes against external and internal factors.

What makes up the bursting strength of a corrugated box?

The bursting strength of corrugated box is composed of the inner and outer layers of cardboard and paper itself septum bursting strength, has nothing to do with the corrugated paper. The paper is mainly decided by the bursting strength of paper fiber.