E-grade paper tube base paper and preparation process thereof

Abstract

The invention discloses E-grade paper tube base paper. Quantification of the paper tube base paper is 420 g/m < 2 >, 500 g/m < 2 > or 520 g/m < 2 >, a transverse quantification allowable error range is +/-3%, and a longitudinal quantification allowable error range is 1.5%. The tightness is 0.60-0.62 g/cm < 3 >, and the moisture of the finished paper is 6.0-8.0%; the longitudinal ring crush index is 7.5 +/-0.5 N.m/g, and the interlayer bonding strength is 100 +/-20J/m < 2 >. Meanwhile, the invention discloses a process for preparing the base paper by adopting the steps of pulping, spraying starch preparation, paper forming, rewinding and packaging, pulping is carried out separately during pulping, and spraying starch is sprayed among all layers during paper forming. The finished paper disclosed by the invention is high in strength index, low in tightness and good in appearance quality, can effectively solve the problem of cracking during production of paper angle beads, and is free of scrap and powder falling; the preparation process mainly adopts a production process of adding the spraying starch between layers without pulp grinding to prepare a finished product.

Description

technical field [0001] The invention belongs to the technical field of papermaking, and in particular relates to an E-grade paper tube base paper and a preparation process thereof. Background technique [0002] With the rapid development of my country's economy, paper corner protectors have been widely used in the packaging industry due to their advantages of low cost, light weight, easy recycling, and pollution-free. The commonly used paper corner protection products are mainly made of kraft paper and other low-end base papers, which are shaped and pressed by a complete set of corner protection machines. The fiber is extremely low, the strength of the paper itself is low, and it is easy to shed hair and powder. After laminating with kraft paper, it is easy to crack, the effect of use is not good, and it is not beautiful enough, so it is not suitable for high-end products. At present, the main problems of the lining paper used in the production of paper corner protectors ar...

AI Technical Summary

Problems solved by technology

[0003] 1. The raw materials are mainly sludge and pulp residue, with poor quality and low strength index

[0004] 2. After pasting with kraft paper, it is easy to crack

[0005] 3. The tightness is high, and the cost of producing paper corner protection is high

[0006] 4. Severe hair loss and powder loss affect the appearance quality of paper corner protector products

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