Process for producing low-basis-weight waxed base paper

Abstract

The invention a process for producing low-basis-weight waxed base paper, comprising the following steps of: (1) disintegrating and mixing bleached sulfate needlebush chemical pulp and bleached sulfate broadleaf wood chemical pulp, adding a bulking agent into the mixture, and performing defibrination to prepare a pulp material; (2) preparing internal pulp starch, a filler, an internal sizing agent and a wet strengthening agent into an auxiliary material respectively; (3) adding the auxiliary materials prepared in the step (2) into the pulp material of the step (1) respectively to form waxed base paper pulp, and adding water to confect the base paper pulp into a net pulp; and (4) performing net forming on the net pulp of the step (3) by using a Haber net paper machine, squeezing, drying, performing calender finishing, and then rolling to prepare the waxed base paper. By the process for producing the low-basis-weight waxed base paper, the structures of the conventional domestic straw pulp and wood pulp are changed; the tensile strength and the whiteness of the base paper are improved; the cost is reduced; the gram weight is reduced; and broken paper in the waxing process of the waxed base paper is reduced.

Description

technical field [0001] The invention relates to papermaking, in particular to a production process for low-quantity waxed base paper. Background technique [0002] Waxed paper belongs to packaging processed paper. It is a processed paper whose base paper is impregnated or coated with paraffin or other waxes. It is mainly used for food and pharmaceutical packaging. Waxed base paper is the base material of waxed paper, and its performance index directly affects the processing effect of waxed paper after dipping or coating. Its main technical indicators include: quantitative, thickness, tensile strength, smoothness, whiteness, opacity, water absorption, etc. [0003] At present, there are many kinds of waxed papers on the market, mainly because the production and sales of low-grade waxed papers account for more than 75% of all waxed papers; and at present, domestic high-grade waxed paper base papers are imported in large quantities from the United States, Europe and other coun...

AI Technical Summary

Problems solved by technology

[0003] At present, there are many kinds of waxed paper in the market, mainly because the production and sales of low-grade waxed paper account for more than 75% of all waxed paper; and at present, a large number of domestic high-grade waxed paper base papers are imported from the United States, Europe and other countries, which increases the production cost of domestic waxed paper

Compared with imported waxed base paper, the main quality problems of domestic waxed base paper are: high transparency after waxing, high wax absorption, poor wax absorption performance, and high production cost