Thickness of paper stock in thousandths of an inch or number of pages per inch.
Bulk is a term used to describe the thickness of paper. The thicker the paper, the higher the bulk. Bulk is important because it affects how the paper feels and how it performs.
There are two types of bulk: apparent bulk and true bulk. Apparent bulk is the thickness of the paper when it is dry. True bulk is the thickness of the paper when it is wet.
Bulk is important because it affects how the paper feels. The thicker the paper, the stiffer it feels. Bulk also affects how the paper performs. The thicker the paper, the more it resists creasing and folding.
Bulk can be measured in several ways. The most common way is to measure the thickness of a stack of paper. This is called the caliper. The caliper is measured in microns or thousandths of an inch.
Another way to measure bulk is to weigh a stack of paper. This is called the basis weight. The basis weight is measured in pounds per ream (500 sheets).
Bulk is important because it affects how the paper feels and how it performs. The thicker the paper, the higher the bulk.
Bulk is an important factor to consider when choosing the thickness of paper. Bulkier papers are more difficult to fold and crease, and they also take up more space. However, bulkier papers are also more durable and can withstand more wear and tear. If you need a paper that will withstand a lot of abuse, such as in a scrapbook or photo album, then you should choose a bulkier paper. If you need a paper that is easy to fold and crease, or if you are limited on storage space, then you should choose a thinner paper.