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2. Grammage - Wikipedia

   en.wikipedia.org/wiki/Grammage

   It is often notated as gsm on paper product labels and spec sheets. Expressed in terms of the mass per number of sheets of a specific paper size , known as basis weight . The convention used in the United States and a few other countries using US-standard paper sizes is pounds (lb) per a ream of 500 (or in some cases 1000) sheets of a given ...

3. Paper density - Wikipedia

   en.wikipedia.org/wiki/Paper_density

   The density can be calculated by dividing the grammage of paper (in grams per square metre or "gsm") by its caliper (usually in micrometres, occasionally in mils). [1] The "ISO 534:2011, Paper and board — Determination of thickness, density and specific volume" indicates that the paper density is expressed in grams per cubic centimeter (g/cm ...

4. Card stock - Wikipedia

   en.wikipedia.org/wiki/Card_stock

   Most nations describe paper in terms of grammage—the weight in grams of one sheet of the paper measuring one square meter.. Other people, especially in the United States, describe paper in terms of pound weight—the weight in pounds per ream (500 sheets) of the paper with a given area (based on historical production sizes before trimming): for card stock, this is 20 by 26 in (508 by 660 mm ...

5. Paper and ink testing - Wikipedia

   en.wikipedia.org/wiki/Paper_and_ink_testing

   Thickness of the paper in relation with GSM. Not only is consistent thickness required in web offset lithography, where varying bulk within a single roll can cause the roll to unwind with uneven tension, which is responsible for various printing defects as well as web breaks. Higher bulk of the same GSM will reduce the show through defects.

6. Paper - Wikipedia

   en.wikipedia.org/wiki/Paper

   In Europe and other regions using the ISO 216 paper-sizing system, the weight is expressed in grams per square metre (g/m 2 or usually gsm) of the paper. Printing paper is generally between 60 gsm and 120 gsm. Anything heavier than 160 gsm is considered card. The weight of a ream therefore depends on the dimensions of the paper and its thickness.

7. Talk:Kraft paper - Wikipedia

   en.wikipedia.org/wiki/Talk:Kraft_paper

   Kraft paper is sold in the US to schools in 40lb and 50lb weights. Kraft wrapping paper for shipping is also available in 60lb weight. The basis size for these weights is 3000 sqft (same basis as for newsprint, = 500 sheets at 2ft x 3ft per sheet). 1 lb = 453.6g, 3000 sqft = 278.7 sqm -> gsm weight = lb/roll weight * 1.6276; 40lb kraft paper ...