Newspaper is made primarily from wood pulp, a material produced by breaking down softwood trees into their individual fibers. Those fibers are pressed into thin, lightweight sheets called newsprint, then printed with ink. But the full picture involves a surprisingly specific combination of tree species, chemical additives, recycled content, and specialized inks that together create the cheap, fast-to-produce paper you’re familiar with.
The Trees Behind Newsprint
Newsprint starts with softwood trees, chosen because their long fibers interlock well and create a paper that holds together despite being extremely thin. The most common species include white spruce, balsam fir, jack pine, and Virginia pine. White spruce is one of the most heavily used, with pulpwood being its single largest commercial application. These trees grow relatively quickly in the northern forests of Canada, Scandinavia, and the northern United States, making them a renewable but resource-intensive raw material.
Softwoods are preferred over hardwoods for a simple reason: their fibers are longer, typically 2 to 5 millimeters compared to about 1 millimeter for hardwood fibers. Longer fibers mean stronger paper, which matters when newsprint needs to survive high-speed printing presses running at hundreds of feet per minute without tearing.
How Wood Becomes Paper
Turning a log into newsprint involves two main approaches. The first is mechanical pulping, where logs are physically ground against a rotating stone or fed through steel refining plates. This process tears the wood apart into individual fibers while keeping most of the original material intact, including lignin, the natural compound that gives wood its rigidity. Mechanical pulping is efficient (it uses about 90 to 95 percent of the wood) but produces a paper that yellows over time because lignin reacts with sunlight. That yellowing is why old newspapers turn brown.
The second approach, chemical pulping, dissolves the lignin using chemicals and produces a stronger, whiter fiber. However, it’s more expensive and wastes more of the wood, so it’s mainly used for higher-grade papers. Most newsprint relies on mechanical pulping, sometimes with a small proportion of chemical pulp blended in for added strength.
Recycled Fiber Content
A significant portion of modern newsprint comes not from fresh trees but from old newspapers fed back into the system. The recycling rate for newspapers in the U.S. sits at about 64.8 percent, making it one of the most recycled consumer products. Many newsprint mills blend recycled fiber with virgin wood pulp, with recycled content ranging anywhere from zero to 100 percent depending on the mill and the product specifications.
Using recycled fiber requires an extra step called de-inking, where the old ink is chemically stripped from the recovered paper. This process uses sodium hydroxide, hydrogen peroxide, sodium silicate, and a surfactant (a soap-like compound) to loosen and lift ink particles from the fibers. Hydrogen peroxide also serves as a bleaching agent, brightening the grayish recycled pulp back to an acceptable shade. The shift toward peroxide-based bleaching came as the industry moved away from chlorine-containing chemicals, which posed greater environmental and toxicity concerns.
Higher recycled content does introduce trade-offs. The de-inking chemicals increase the concentration of silica and sodium in mill wastewater. One study found that raising recycled fiber content from zero to 50 percent increased silica levels in the effluent from 4 to 119 milligrams per liter, complicating water treatment.
Fillers and Additives
Wood fiber alone doesn’t produce paper with the right optical and printing properties. Newsprint contains mineral fillers, most commonly calcium carbonate (the same compound found in chalk and antacid tablets). These fillers serve several purposes: they improve opacity so that text on one side of the page doesn’t show through to the other, they brighten the surface, and they help the paper absorb ink evenly. In some formulations, titanium dioxide is added in small amounts for extra whiteness and opacity.
Starch is another common additive. Cooking starch in the presence of mineral fillers improves the paper’s surface strength, which prevents fibers from lifting off and sticking to the press during printing. Retention aids, synthetic polymers that carry an electrical charge, help keep the fillers evenly distributed throughout the pulp mixture rather than washing out with the water during sheet formation.
How Thin Newsprint Actually Is
Newsprint is engineered to be as light as possible while remaining functional. Standard newsprint ranges from about 38 to 48.8 grams per square meter (GSM). For context, regular office paper is typically 75 to 80 GSM, so newsprint is roughly half the weight. This extreme thinness is deliberate: lighter paper means lower shipping costs and more pages per roll on the press. Even at 38 GSM, the paper maintains around 90 percent opacity, meaning very little of the printing bleeds through visually. At the heavier 48.8 GSM weight, opacity reaches about 95 percent.
The Ink on the Page
Newspaper ink is a mixture of pigment suspended in a carrier oil, combined with resins and waxes that help it adhere to paper. Black ink uses carbon black as its pigment. For decades, the carrier oil was petroleum-based, but the industry has increasingly shifted toward soy-based ink. Soybean oil is lightly refined and then blended with the pigments, resins, and waxes to create the final product.
Soy ink offers several practical advantages. It produces brighter colors and sharper images because less pigment is needed per unit of ink. It releases fewer volatile organic compounds (VOCs) during printing, reducing air pollution in press rooms. And it’s significantly easier to remove during the recycling de-inking process, which means higher-quality recycled fiber. The trade-off is that soy ink can take slightly longer to dry on the page, but for most newspaper applications the difference is manageable.
Why Newspaper Feels Different From Other Paper
The rough, slightly fuzzy texture of newsprint comes directly from its manufacturing shortcuts. Because mechanical pulping preserves lignin and other wood components that chemical pulping removes, the fibers are stiffer and bond less tightly to one another. The paper isn’t coated or calendered (polished between heavy rollers) to the same degree as magazine paper or office paper. This rougher surface actually helps: it absorbs ink quickly, which is essential when pages are printed at high speed and need to be dry enough to stack within seconds.
That same composition explains why newsprint tears so easily along one direction. The fibers align predominantly in the direction the paper travels through the manufacturing machine, creating a visible “grain.” Tearing along the grain is easy; tearing across it takes noticeably more effort. It’s also why newspaper feels noticeably weaker when wet. Without the chemical bonding agents used in premium papers, the mechanical pulp fibers lose their grip on each other quickly when moisture is introduced.