a4 paper bag manufacturers

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aper wet deformation and permanent deformation produced in the wet and dry conditions. deformability 

 

a4 paper to print adversely. Generally, a4 paper and paper deformation rate of the fiber type and paper production 

 

related. Rag pulp paper grades deformation small, large chemical wood pulp paper create deformation unbleached 

 

chemical pulp is more easily deformed than bleached chemical pulp. Second, the aging of a4 paper archives in 

 

archives and use the process, archive a4 paper gradually undergoing irreversible change in appearance, structure and 

 

properties of the various aspects, known as "aging" or "worsening." a4 paper aging embodied in three aspects, 

 

namely, color, strength decreases and changes in chemical properties. 1. File a4 paper acidic hydrolysis of 

 

cellulose. A4 paper archives department at all levels of the majority of the existing archives containing acid. Acid 

 

is the most important factor causing Archives a4 paper aging and even chalking. Because the archives acid catalyzed 

 

hydrolysis of cellulose degradation. Archives acids from paper brought to the acid; ② the acid gas in the air 

 

and dust in the acidic substance is archives adsorbed; writing, printing on the archival material a4 paper 

 

writing an aafter the file mildew, mold will secrete organic acids such as oxalic acid and citric acid;

 

cellulose, hemi-cellulose, especially wood Su produce acidic substances in the oxidation or hydrolysis. 2. File a4 

 

paper enzymatic degradation of cellulose. When records storage relative humidity, the archive is easy to mildew. 

 

Archives a4 paper yellow after mildew, stains little mechanical strength sharp decline, seriously damaged the 

 

archives life. This metamorphism archives, mainly secreted by fungal cells in the metabolic processes caused by 

 

various enzymes, the most important is the cellulase. Cellulase is a specialized hydrolysis of cellulose into the 

 

insoluble biocatalyst soluble sugars. Cellulase catalytic intense, it is possible within three months of the a4 

 



A4 Paper Manufacturers , A4 paper suppliers, A4 copy paper manufacturers 
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a4 paper bag manufacturers
 
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