How is GSM calculated?

How is GSM calculated?

– Weight all test swatches accurately and calculate average weight of swatches. – Multiply the average weight of swatches by 100 to calculate GSM of the sample fabric. (Normally, the area of round GSM cutter is 1/100 square meters.)

How do you calculate square Metres?

Multiply the length and width together. Once both measurements are converted into meters, multiply them together to get the measurement of the area in square meters. Use a calculator if necessary. For example: 2.35m x 1.08m = 2.538 square meters (m2).

What is GSM packaging?

GSM is an acronym for grams per square metre. It is a measurement used in the packaging industry to quantify the mass or density of a material, typically paper. It is essentially a measurement for the thickness of paper, and other associated material such as NWPP.

Why do we calculate GSM?

The GSM of a material can tell a lot about the strength of the materials. The GSM is the measure of weight of a material per square meter area of that material. This quantity is widely used in many different industries to determine the physical traits such as strength and construction of any material.

How is GSM wrapper calculated?

Divide the weight by the area Take the weight in grams and divide it by the area that you just calculated.

What is GSM and BF?

Burst Factor (BF) and Burst Index (BI) can be easily calculated if GSM of the specimen is known. Burst Factor = Bursting Strength (g/cm2) ÷ gsm (g/m2) Burst Index = Bursting Strength (KPa) ÷ gsm (g/m2)

What is the formula of BF?

Boron monofluoride

PubChem CID 6336604
Structure Find Similar Structures
Molecular Formula BF
Synonyms Boron monofluoride UNII-N01K2O1ZJH 13768-60-0 N01K2O1ZJH Borane(1), fluoro- More…
Molecular Weight 29.81 g/mol

What is 16 BF kraft paper?

Brown Plain 16 BF Kraft Paper Roll, GSM: 80-230

Material Paper
GSM 80-230gsm
Color Brown
Pattern Plain
Packaging Type Roll

How is burst factor calculated?

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 unit of bursting strength?

The pressure reading at the instant of rupture is recorded as the bursting strength. The units of expression are pounds per square inch or “points”. The measurement is variously termed the “Mullen”, “pop test”, or simply the “burst”.

What is bust factor?

Bursting factor is the property of materials like paper and cardboard that gives very crucial information about the quality as well as strength of the materials. This test gives the resistance of the materials against a bursting test that can be applied on the materials during various stages of delivery.

How do you increase the burst factor of 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 do you calculate paper bulk?

Bulk is used to measure the ratio of paper thickness to its weight in cubic centimeters per gram. The formula for bulk is thickness (mm) x basis weight (g/m^2) x 1000.

What is tear strength of paper?

The tear strength of paper means the resistance of a paper sheet to tearing force that it is subjected to. It is another important basic physical property of paper and paperboard. It is measured in both machine direction (MD) & cross direction (CD) and expressed as mN (mili Newton).

Why is bursting strength important in paper?

The bursting factor of your material can determine the amount of pressure a corrugated box or paper can tolerate to a limit where it ruptures. Bursting Factor is calculated by applying the hydrostatic pressure on the sample in order to rupture the material.

How do you increase bursting strength of corrugated box?

The number of plies can be added in a corrugated sheet to enhance the strength of the boxes. Hence, we can conclude that one can easily increase bursting strength by increasing the number of plies of a fluted paper to enhance the strength of the corrugated boxes.

How do you test tensile strength of paper at home?


  1. Tie a short length of your test material in a secure knot around the hook of the spring scale.
  2. Secure the top of the spring scale to something steady, like a table or wall.
  3. Pull on the test material until it breaks.
  4. Record the force measured by the spring scale right before the test material breaks.

What is bursting strength of packaging?

It means the excessive pressure of the products that are placed inside burst the material. To analyze the amount of weight or pressure that a material can tolerate before it fails, bursting strength test is performed on the packaging products.

What is the difference between bursting strength and bursting factor?

Bursting factor is calculated to determine the amount of pressure that a paper or cardboard can tolerate easily before it collapses. On the other hand, bursting strength is measured by providing maximum hydrostatic pressure to rupture the paper used to produce corrugated boxes.

What is Mullen burst strength?

A test performed to measure the bursting strength of paper or paperboard. Mullen tests are performed for each side of a paper or paperboard, and the bursting strength can be expressed as the average of both sides. Bursting strength expressed as a percentage is called the percent Mullen.

What is bursting strength of fabric?

When the fabric is subjected to pressure, the fabric begins to expand in all the possible directions at the same time. This pressure limit is called bursting strength. Thus we can say that “the pressure required to burst the fabric surface is termed as bursting strength of the fabric”.

What is the difference between tear strength and tensile strength?

Tear strength and tensile strength were considered important factors in this study because tear resistance (or tear strength) is a measure of how well a material can withstand the effects of tearing, whereas tensile strength is a measurement of the force required to pull something to the point where it breaks.

Which fabric construction would increase the resistance to abrasion?

Longer fibers incorporated into a fabric confer better abrasion resistance than short fibers because it is harder to liberate them from the fabric structure. For the same reason filament yarns are more abrasion resistant than staple yarns made from the same fiber [8,9].

How fiber and yarn properties are related with fabric abrasion resistance?

Fibre properties: A fabric made up with longer fibres gives better abrasion resistance than short fibres because they are harder to remove from the yarn. For the same reason filament yarns are more abrasion resistant than staple yarns made from the same fibre.