Strength of paper is more dependent on the nature of its fiber content than its thickness. Papers that are subject to considerable tension in use, such as those printed on web presses, should have high tensile strength as well as high tear strength. Brightness of paper is determined by the amount of light it reflects. Typical 50-pound house paper has a brightness measurement around 81 percent. As mentioned above, alternative stocks are now being manufactured with a similar or higher brightness than 50-pound stock.
Opacity refers to a paper's ability to prevent print from showing through to the other side.
Typical 50-pound paper has opacity of 89 percent. NPC inventories a wide range of paper stocks. We can also order other paper stocks at very competitive prices. However, our web presses are non-heatset, which means we cannot print text on matte or gloss coated stock. Our web presses will print moderate ink coverage on offset and on newsprint or groundwood text stocks.