: the capacity of a material (such as a paper or textile) or object (such as a metal pipe) to maintain in continuity when subjected to pressure broadly : the pressure often expressed in pounds per square inch required to rupture such a material or object under rigidly controlled conditions.
What is burst factor?
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. This machine determines the strength of the material which is further used to determine the bursting factor and bursting index.
What is bursting 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 bursting strength in packaging?
Bursting strength It is defined as the pressure at which a film or sheet (of paper or plastic, for example) will burst. Used as a measure of resistance to rupture, burst strength depends largely on the tensile strength and extensibility of the material.
How do I check my bursting strength?
#1– Bursting Strength Test In this testing procedure, a rubber diaphragm is used to apply pressure to the walls of the corrugated box until it bursts. The diaphragm is expanded using hydraulics and as the diaphragm expands, the corrugated board bursts under pressure.
What is minimum burst pressure?
The burst pressure is the minimum pressure needed to cause irreversible damage on the pipe by bursting. It is calculated considering zero external pressure and no axial loading. In that case, the force F1 required to burst a pipe from the inside is counteracted only by the strength of the pipe walls (F2).
What is GSM and BF?
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.
How do you convert bursting strength to bursting factor?
The Bursting Factor of the papers can be calculated by dividing the bursting strength by the weight of the specimen and is expressed in grams/sq. meter. Bursting factor is calculated to determine the amount of pressure that a paper or cardboard can tolerate easily before it collapses.
How do you calculate bursting strength?
#1– Bursting Strength Test 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.
How do you test bursting strength?
Summary of Test Method A specimen is clamped over an expandable diaphragm. The diaphragm is expanded by fluid pressure to the point of specimen rupture. The difference between the total pressure required to rupture the specimen and the pressure required to inflate the diaphragm is reported as the bursting strength.
How are bursting factors and bursting strength related?
The bursting strength gives the value of the maximum amount of the force that can be applied on a material before it is ruptured. This helps in determining whether the material is appropriate for a specific products and whether it will be able to withstand the forces in a certain condition.
How is the bursting factor of paper calculated?
These properties help in measuring the endurance and strength of the packaging. The bursting factor is simply calculated by dividing the bursting strength of paper by the weight of the paper. The result is expressed in grams per sq. meter.
When do you use bursting strength in packaging?
Bursting strength is commonly referenced when packaging goods. Shippers will then know their packaging is strong enough to handle the weight of the materials inside. The only materials that have a bursting strength are sheets, and paper products are the most commonly tested material.
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:
