Printing paper is classified by weight!
Time:2025-12-24
Views:9
The grammage of paper refers to the weight per square meter of paper, which is an important parameter of paper that directly affects its thickness, texture, and purpose. So, how to classify paper by weight?
1、 Low weight paper
Low weight paper is usually thinner and suitable for printing or writing purposes that do not require high thickness, such as flyers, newspapers, etc.
1> Below 50 grams: such as dictionary paper, mainly used for printing dictionaries and manuals. Copy paper is also commonly used for multi sheet printing and binding protection, and its weight may fall within this range, but the specific weight varies depending on the purpose.
2> 50-80 grams: including letterpress printing paper and news paper. Double adhesive paper is mainly used for printing books and journals, while news paper is exclusively used for printing newspapers, papers, and other materials.
2、 Medium weight paper
Medium weight paper has a moderate thickness and is widely used in various printing and writing materials, such as 60-120 grams. It covers a variety of paper types, such as double adhesive paper, writing paper, kraft paper, etc. These papers are mostly used for instructions, envelopes, letters, exercise books, diaries, etc.
For example, 150-250 grams: Copperplate paper performs well within this weight range and is suitable for brochures, covers, postcards, product samples, etc. Meanwhile, white cardboard (divided into yellow core and white core) is also commonly used for high-end printed products such as business cards and invitations, and its weight can also fall within this range.
3、 High weight paper
High weight paper is thick and strong, commonly used for printed materials that require high strength and texture, usually weighing over 250 grams, including high weight copperplate paper, white cardboard (gray background white, white background white), double adhesive paper, etc.
Among them, white cardboard is particularly suitable for printing materials used in packaging and decoration, such as paper bags, packaging boxes, etc. High weight double adhesive paper may also be used for printed materials that require a certain thickness. In addition, the weight of cardboard (or paperboard) is usually above 250 grams per square meter, mainly used for making hardcover book covers, envelopes, etc.
Precautions
It should be noted that there is a certain relationship between the weight and thickness of paper, but it is not an absolute proportional relationship. Because factors such as fiber distribution and manufacturing process of paper can also affect its thickness. Meanwhile, paper from different brands and manufacturers may have differences in thickness and texture under the same weight.
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