About 52% of these are specialty paper, 2% are kraft paper, and 2% are paperboard. Conversion charts for paper gsm to basis weight paper industry weight comparisons. This stands for grams per square meter and means exactly that ie how many grams a single sheet of paper weighs measuring 1m x 1m. It does not help if a manufacturer quotes weights in gsm on one page and lb on another page and the numbers do not correspond to one another nor to the real weight as measured. In europe, and around the world, the method used for measuring paper thickness is gsm grams per square inch, sometimes listed as gm2. Below is a guide to different paper weights for you to consider when printing. Paper help guide, understanding the differences in paper weights. This includes bond weight, text weight, cover weight, index weight and. The thickness of a given weight will vary depending on the substance used. Paperboard thickness and grammage conversion table. In the metric system, the mass per unit area of all types of paper and paperboard is expressed in terms of grams per square metre gm 2. The thickness of printing paper list zx china printing company. Paper weight and thickness, lets start with gsm paper weight.
Gsm stands for grams per square meter, a measurement used to identify the weight of different types of paper and card. End paper weight and size confusion bond offset cover tag index points caliper millimeters metric ledger text inches gramssq meter 16 40 22 37 33 3. Normal paper for exercise books and photocopiers is about 80gsm. Paper weight is measured in grams per square metre or gsm as it is more commonly known. The stuff you might pick up in packs of 500 sheets at the office depot. Paper weights and thickness explained peppermint print. If you are setting a fold in colour, we recommend scoring from a grammage of 170 gsm onwards so that the colour does not split at the fold. Available in number of lengths and thicknesses to fulfill the wide demands of clients, this liner is highly demanded in the packaging of fluid material. Paper is available for purchase in a variety of sizes, finishes, colors, thickness or caliper and weights.
Some manufacturers also use text to refer to any paper they consider topoftheline, whether or not its surface. This gsm range covers the paper thickness of most posters youre likely to find on pub walls etc. Basis weight bond, book, index, cover, tag, points, offset, metric weight gsm or gm2 and, often interchangeable, points or mils an actual caliper reading of the paper thickness. Gsm caliper the gsm grams per square meter tells paper consumers how dense a paper is. Pp areal densities ranging from 75 to 150 gsm correspond to thicknesses from 80 to 160 microns, or 3 to 6 mils since 25. Which is thin but strong paper, that is 70gms, 80gsm. Paper is measured in grams per metre squared gsm, this refers to the weight per square metre. Gsm and thickness thermal paper today can vary from different sizes and different qualities in order to suit different customers needs. In general, the higher the gsm rating, the heavier and thicker the paper will be.
The paper can be thicker if you have a low number of pages or if its a corporate image brochure. The history of paper thickness gsm chart paper thickness gsm chart paper thickness gsm chart on the lookout for inspiration online can occasionally be challenging. Caliper refers to the thickness of a sheet of paper expressed in thousandth. In the united states, and some other locations, other weight based measurements are used for determining the thickness of paper. We are committed to strengthening our people and the communities where we live and work using all resources responsibly and efficiently, and ensuring our businesses are safe, successful and sustainable for generations to come. A guide to paper weights for print brochures digital.
A guide to paper types and sizes share this article. For example aurora natural is 230 gsm as measured on a balance. Use the following table to convert different paper weights. The fomulas below can be used for the conversion of the 2 units. Simply expressed, the average thickness in microns of a sheet of polypropylene underlayment is slightly greater than the areal density in gsm. The caliper of paper thickness is predominantly dictated by the selection of raw materials and the process adopted in a mill. The tables below give the weights of sheets of the iso 216 a paper sizes for various common grammages e. Because gsm is not a measure of paper thickness, it is a measure of paper weight g rams per s quare m eter. Refer to the following web site for the pdf version of the xerox. The higher the value of gsm, the heavier card or piece of paper. First, there are three common methods for specifying paper weight and thickness. With these tables you can quickly look up the caliper for various kinds of paper.
To verify you pick the right sort of paper for your printed item, i thought id provide for you a rundown of the different sorts of paper. Woody raw materials will give more thickness and bulk to paper compared to recycled paper or paper made of agricultural. Thats why when it comes to choosing the right type of thermal paper, one must have adequate knowledge about the basic properties it possesses. A sufficient quantity of drying agent shall be placed inside of the packaging in order to prevent condensation. Type description uses gsm image tracing paper transparent, hard and. One of our paper supplier kw doggetts explains, many people often confuse the weight of paper with the thickness. Glassine release paper 62gsm glassine release paper. Understanding paper weight support oki data americas. When we discuss paper grammage, we are alluding to the paper thickness, i. We bring forth for our clients an optimum quality glassine release paper that is manufactured using high grade material under the supervision of our skilled professionals in compliance with international standards. Grammage of paper and paperboard weight per unit area. As a starting point, standard printer paper is generally around 80gsm.
Its a very thin paper and ranges between 20 to 50 gsm. If you do the math, youll see that these numbers dont correspond exactly. The gsm guide to paper thickness the gsm paper weight chart below will give you a better idea of how different thicknesses of paper are used. In china, the thickness of the paperboard is measured in milimeters, while point is used in usa, which is abbreviated to pt. Knowing a paper s weight is important when working on paper engineering and popup designs because the thickness of the paper is the feature that most defines its stiffness. The higher end of this bracket is just slightly lighter than some printercopier paper.
Paper weight ranging from 260270 gsm, cover paper javascript seems to be disabled in your browser. Lang describes this paper as thin, strong, crisp, takes a crease and isnt overly weakened by folding. Designation for lighter weight printing papers with textured surfaces such as laid or linen. Understanding and being able to compare the difference is often the. A north american measurement of paper thickness, expressed as points, which are.
Packaging each foil should be seaworthy packed in crates or cases, wrapped in kraft paper, pp film and pe foil. This quantity is commonly called grammage in both english and french, though printers in most englishspeaking countries still refer to the weight of paper typical office paper has 80 gm 2 0. As an example, each sheet of 60 gsm bond paper from one supplier may be 0. If you have a large number of pages, you should have a maximum grammage of 5 gsm. According to the type of brochure and the kind of binding used. Excellent dual sided rag paper but sell it on the correct weight, it still is good value. The history of paper thickness gsm chart chart information. Us to international paper weights equivalent weights. To use the weight conversion tool, please select a type of paper from the pull down menu, then enter a value in pounds and hit calculate. Paper weights, sizes, terms print and finishing solutions.
Paper specification entry guide your people your process your vendors better results text. To be approved to ship via usps, your paper must be at least 3. Paper is available for purchase in a variety of sizes, finishes, colors, thickness or. We transform renewable resources into recyclable products that people depend on every day. Average paper weight bracket for the paper youll find in a copierprinter. The paper is made from a variety of different plant fibres including abaca, hemp, flax, cotton. Caliper refers to the thickness of a paper in thousandths of an inch.
The table i found was exactly what i expected, it gave an approximate thickness range for a given gsm weight, not an exact thickness. Understanding and being able to compare the difference is often the key to selecting the best paper for your project. Note how 22lb newsprint stock is a considerably lighter grade of paper than 20lb bond, this is due to the uncut sheet size. T 410 om08 grammage of paper and paperboard weight per unit area 4 paper and sheet weighing device used above, each of the needed five test specimens would require 10 sheets. Most newspapers will commonly be printed on this paper thickness. Caliper refers to the thickness of a sheet of paper expressed in thousandth of an. Gsm is a consistent number for papers, running smaller to larger regardless of paper basis weight. Paper weight conversion chart bond gsm cover index. Also the values of many physical properties such as bursting strength, thickness, and bulk are interpreted and speci. The thickness can vary from sheet to sheet since its all handmade. In general, the higher the gsm rating the heavier and thicker the paper will be. Typically the higher the gsm the heavier and generally, the thicker the paper but this isnt always the case.
The ability to compare paper weight across categories is useful if you ever need to make substitutions due to price or availability. The grammage is also used to calculate the index properties of. Gsm value is the unit to measure the weight of the paper. Thickness maximum 0,006 0,020mm mm other reel diameters are subject to individual agreement. A wide variety of 100gsm paper thickness options are available to you, such as pulping type, pulp style, and paper type. Cover stock is also known as card stock and covers light card at the 50lb and 60lb end of the scale through to extremely heavyweight card at the 160lb end. Heres a quick list of paper weights including grammage gsm. Although the quality, and therefore the gsm, of the same type of paper can vary among manufacturers, there are some generally accepted standard gsm designations for common paper types. These tables are organized by grade, with the left column listing. It is a very simple test to perform and tells a lot about the basic properties of paper material which is very important to decide the quality. This is used as a baseline measurement in metrics and as a result it is still used as the standardsizewhen comparing the weights of different sized papers. This is the weight of most household printer paper.
Bond ledger offset book text cover tag index points caliper inches caliper mm gsm 16 40 22 37 33 3. In the paper industry, the abbreviation gsm refers to. The weight of a sheet of paper depends on the size of the sheet and the thickness of the paper, known as grammage internationally and basis weight in north america. Gsm is a continuous scale applicable across paper categories, so you can use it to compare the relative weights of different types of paper. Paper grammagegsm, pt and thickness comparison and. Paper weight is measured in grams per square metre gsm. Finding the weight of a piece of paper can be tricky if you dont have the original packaging.
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