White Cardboard(Ivory board)
Most used for packaging, tag, postcard,greeting card,etc
The paper is harder than dual copper paper. The grammage varies from 200 to 450 gsm.
Dual copper paper(Art paper)
Art papers are one of the highest quality printing papers and are used for illustrated books, calendars and brochures. The grammage varies from 100 to 230 gsm.
Woodfree uncoated paper
Woodfree uncoated papers are of high quality and have a natural look and feel. The properties are good strength, high brightness and good archival characteristics.They provide a non-glare surface suitable for reading and writing.
Used for paper grocery bags, multiwall sacks, envelopes and other packaging. Provides strength and durability.
Very fancy paper, shiny and often used for luxury boxes.
Richly elegant paper, used for special value cards or boxes.
GSM (Gram per square meter) to thickness
g (gram), μm (microns), pt (point)
COATED ART PAPER
White Cardboard (Ivory Board)
PAPER WEIGHTS (GRAMS AND MICRONS)
Paper weight is given as the weight in grams per square metre (gsm). A single square sheet (1m x 1m) of copier paper weighs 80g, (not an A4 sheet which will weigh much less). Thus in many cases paper weight is directly proportional to paper thickness. With this in mind, it is worth noting that some papers, such as the coated papers described above, are usually thinner than the same weight/size sheet of uncoated paper. This is because these papers are denser, e.g. 100 gsm coated is thinner than 100 gsm uncoated. Sometimes paper is given in thickness as opposed to weight and this is becoming more common. The thickness is given in microns, which are thousandths of a mm.