High-whiteness coated paper coated by using raw paper with medium whiteness, coating method and coating
2011
The invention relates to high-whiteness coated paper coated by using raw paper with medium whiteness, a coating method and a coating. The coating method is mainly characterized by greatly reducing the whiteness of the raw paper for producing conventional high-grade coated paper such as copper plate paper and coated white cardboards. The coating mode is a common single-side or double-side two-layer (double-coating) or multi-layer coating mode in a papermaking plant. By using the mechanical property of the raw paper, the printing property of coatings and the synergetic whitening effect between the coatings, yellowing of the raw paper is inhibited, and the whiteness of the coated paper is improved to over 86 percent so as to meet the requirements of national standards on the high-grade copper plate paper. The raw paper of the high-grade coated paper can be made by using various kinds of environment-friendly and resource-saving pulp of medium whiteness more widely, and is favorable for promoting the development of the low-carbon manufacturing technology of the pulping papermaking industry. The newly invented coated paper can substitute the traditional high-grade paper such as the copper plate paper, the coated white cardboards and the like in the fields of printing and packing.
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