Method for producing dry type duplicating body paper
The invention belongs to a papermaking technology, and relates to a method for producing dry type duplicating body paper. The method comprises the following steps of: making finished paper by crushing, grinding and mixing basic raw materials of bleached chemical broad-leaved wood pulp and bleached c...
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Format: | Patent |
Sprache: | chi ; eng |
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Zusammenfassung: | The invention belongs to a papermaking technology, and relates to a method for producing dry type duplicating body paper. The method comprises the following steps of: making finished paper by crushing, grinding and mixing basic raw materials of bleached chemical broad-leaved wood pulp and bleached chemical softwood pulp, sizing, dehydrating, pre-drying, performing surface sizing, post-drying, glossing and coiling; during manufacturing, adding fillers, an inner sizing agent, a wet-strength agent and a surface sizing agent, wherein the two basic raw materials comprise 65-85 percent of bleached chemical broad-leaved wood pulp and 15-35 percent of bleached chemical softwood pulp, and the fillers comprise titanium dioxide and calcium carbonate; adding the titanium dioxide during pulp crushing, wherein the adding amount is 20-60 kilograms for per ton of paper; and adding the calcium carbonate during pulp mixing, wherein the adding amount is 120-280 kilograms for per ton of paper. With the method, the production cos |
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