Definitions for "Chain Lines"
Chain lines are situated at laid lines which help produce a watermark in the paper.
In a sheet of paper, the lines that run perpendicular to the laid lines. In a paper making mould there are laid wires that are woven together by very thin wire or silk threads; these threads form watermark lines, called chain lines, in the newly formed sheet.
In a sheet of paper, chain lines run perpendicular to the laid lines. In a papermaking mould, laid lines are woven together by very thin wire or silk threads. Watermark lines, also known as chain lines are formed from these threads in the newly formed sheet.