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Paperweight. A paperweight is a small solid object heavy enough, when placed on top of papers, to keep them from blowing away in a breeze or from moving under the strokes of a painting brush (as with Chinese calligraphy ). While any object, such as a stone, can serve as a paperweight, decorative paperweights of glass are also produced, either ...
Grammage. Grammage and basis weight, in the pulp and paper industry, are the area density of a paper product, that is, its mass per unit of area. Two ways of expressing grammage are commonly used: Expressed in grams (g) per square metre (g/m 2 ), regardless of its thickness ( caliper ). [ 1] This is the measure used in most parts of the world ...
Paper may be between 0.07 and 0.18 millimetres (0.0028 and 0.0071 in) thick. [20] Paper is often characterized by weight. In the United States, the weight is the weight of a ream (bundle of 500 sheets) of varying "basic sizes" before the paper is cut into the size it is sold to end customers.
The weight of an A-series sheet of a given paper weight can be calculated by knowing the ratio of its size to the A0 sheet. For example, an A4 sheet is 1 ⁄ 16 the size of an A0 sheet, so if it is made from 80-g/m 2 paper, it weighs 1 ⁄ 16 of 80 g, which is 5 g.
Paper density. Weighing scale to determine paper weight. Paper density is a paper product's mass per unit volume. 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]
Paperboard is a thick paper -based material. While there is no rigid differentiation between paper and paperboard, paperboard is generally thicker (usually over 0.30 mm, 0.012 in, or 12 points) than paper and has certain superior attributes such as foldability and rigidity. According to ISO standards, paperboard is a paper with a grammage above ...
Weighing paper can be folded into different shape depending on its uses. Origami pouch: Origami pouch is a pocket-like shaped weighing paper that can be usually used for handling powdery, slippery samples. Weighing boat: Weighing boat is a box-like folded weighing paper that can be usually used for handling solid, gunky samples. origami pouch ...
In the US, paper density is usually measured in "pound per reams " (of 500 sheets). Typical Letter paper has a basis weight of paper of 20 or 24 pounds (9.1 or 10.9 kg) – the weight of 500 sheets (a ream) of 17-by-22-inch (431.8 by 558.8 mm) paper at 70 °F (21 °C) and at 50% humidity. [ 3] One ream of 20-pound Letter-sized paper weighs 5 ...
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