Bleaching: The pulp is bleached using a chlorine-freebleaching agentto remove any impurities or remaining lignin. Additives: Additives such assizing agents,fillers, and coatings can be added to the pulp to improve the paper’s properties, such as its smoothness,brightness, or durability. ...
the most important factor is that it is lignin-free and acid-free. Lignin is a substance that can cause paper to change colors and become fragile when it comes in contact with light or heat. The acid in paper can cause the paper to break down over time. Acid-free and lignin-free p...
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What Are the Industrial Uses of Lignin? What Is a Paper Ream? What Kind of Paper can be Recycled? What is Paper Converting? Discussion Comments Bycloserfan12— On Sep 09, 2010 @musicshaman, earlyforest -- Archival tissue paper is used for storing antiques, stuff you would wrap in paper...
Use Acid-Free and Lignin-Free Materials: Prevents yellowing and deterioration of pages and photos. Store in a Cool, Dry Place: Protects against fading and damage from heat and humidity. Avoid Direct Sunlight: Prevents the fading of photos and paper. ...
Special artist suede paper has a surface that accepts pastels, charcoal, paint and other media. This artist paper has a heavy watercolor paper base with a velvety surface and comes in larger sizes than most crafting suede paper. The paper is archival and found in a range of colors from pale...
从管材、管件和阀门不应受到暴晒、雨淋，应有防紫外线照射措施；PE管材、管件和阀门不应长期户外存放。当从生产到使用期间，累计受到太阳能辐射量超过3.5GJ/m²时，或管材存放时间超过4年、密封包装的管件存放时间超过6年，应对其抽样检验，性能符合要求方可使用（ ）
ais accepted that …. Plays a significant part for both …, and what’s more , a lot of attention is being drawn to the change of….. It However, whether … deserves such an attention , people’s ideas vary. 被接受那…. 扮演一个重大部分为两个…,并且什么是更多,引起很多关注对变动.....
aI think tell you there is a my house 我认为告诉您有一个我的房子 [translate] aWHEN WAS HEBORN 当是HEBORN [translate] aThe resulting lignin-protein complex were centrifuged 发生的木素蛋白质复合体被分离了 [translate] a157 gsm demimatt art paper vol. 0,95 157 gsm demimatt加工印刷纸卷。
is very irregular (molecular weight) heterogeneous substitution caused by wide distribution, large difference in raw material sources) and heterogeneous aggregation structure (it is difficult to substitute in the high crystallization region). Impurities in cellulosic materials, such as lignin, ash content...