In terms of composition, sulfur-free paper is a special kind of paper that does not contain sulfides or any sulfur-containing compounds. It is usually made from wood pulp or other cellulose materials. Tracing paper, on the other hand, is a semi-transparent paper, and its specific composition is relatively complex, which endows it with some unique properties.
High-quality kraft paper typically displays a natural, soft beige or light brown color with even distribution and no noticeable color differences or spots. Excessively pale paper may indicate over-bleaching, which weakens durability, while uneven coloring or dark/yellow spots suggest production flaws.
Sulfur-free protective paper has emerged as a game-changer in electronics manufacturing, particularly for printed circuit boards (PCBs) and LED components. Traditional protective materials often contain sulfur compounds, which react with copper and silver traces on PCBs, leading to corrosion and electrical failures. Sulfur-free paper eliminates this risk by using alternative chemical formulations, ensuring long-term reliability for sensitive electronics412.