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Preparation process of baking raw paper

A preparation process and baking technology, applied in the field of preparation technology of baking base paper, can solve the problems of high cost, complex process, incomplete quality of paper, etc., and achieve the effects of improving stiffness, reducing paper dust, and improving dimensional stability.

Inactive Publication Date: 2019-06-14
YUEYANG FOREST & PAPER CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The purpose of this process is to reduce the occurrence of seersucker paper defects. At the same time, the paper has good flatness, high smoothness, and high tightness. However, high temperature resistance is an important quality index in the preparation of baking paper, which is not reflected in this invention. Moreover, the quality of paper produced by this process does not fully meet the requirements of baking base paper, and the process is complicated, resulting in high cost

Method used

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  • Preparation process of baking raw paper
  • Preparation process of baking raw paper
  • Preparation process of baking raw paper

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0018] The purchased bleached softwood kraft pulp is beaten to 48°SR, and the bleached hardwood kraft pulp is beaten to 40°SR. In the beating process of NBKP and LBKP, 0.3kg / t of cellulase is added respectively; Seed pulp is prepared according to the proportions of 35% bleached softwood kraft pulp and 65% bleached hardwood kraft pulp. After mixing, the pulp is formulated into a pulp with a concentration of 3.5%. The pulp is screened through a thick pulp sieve, and 6kg / is added in the seasoning section. t paper starch enhancer, add 5kg / t paper calcium sulfate at the same time, and then pour pulp. In the pulping section, add wet strength agent with a dosage of 5kg / t paper, and then go through desanding and degassing, sizing, fine sieving, and online molding Dewatering, pressing, pre-drying, surface sizing, post-drying, calendering, winding, and packaging to make baking base paper.

[0019] Surface sizing process: starch surface glue concentration is 13%, sizing amount is 35kg / ton ...

Embodiment 2

[0025] The purchased bleached softwood kraft pulp is beaten to 46°SR, and the bleached hardwood kraft pulp is beaten to 42°SR. In the beating process of NBKP and LBKP, 0.5kg / t of cellulase is added respectively; Seed pulp is prepared according to the proportions of 50% bleached softwood kraft pulp and 50% bleached hardwood kraft pulp. After mixing, the pulp is formulated to a concentration of 3.4%. The pulp is screened through the thick pulp sieve, and 10kg / is added in the seasoning section. t paper starch enhancer, add 4.0kg / t paper calcium sulfate at the same time, and then pour the pulp. In the puffing section, add wet strength agent with a dosage of 5.5kg / t paper, and then go through desanding and degassing, sizing, fine sieving, It is formed into baking base paper by drying, pressing, pre-drying, surface sizing, drying, calendering, winding, and packaging.

[0026] Surface sizing process: starch surface sizing agent concentration 12.5%, sizing amount 30kg / ton paper, water-r...

Embodiment 3

[0032] The purchased bleached softwood kraft pulp is beaten to 50°SR, and the bleached hardwood kraft pulp is beaten to 38°SR. In the beating process of NBKP and LBKP, 0.2kg / t of cellulase is added respectively; Seed pulp is prepared according to the ratio of 30% bleached softwood kraft pulp and 70% bleached hardwood kraft pulp. After mixing, the pulp is formulated into a slurry with a concentration of 3.0%. The pulp is screened through a thick pulp sieve, and 12kg / t paper starch is added as the seasoning. Reinforcer, add 6.0kg / t of paper calcium sulfate at the same time, and then flush. In the flushing section, add a wet strength agent with a dosage of 8kg / t of paper, and then go through de-sanding and degassing, sizing, fine sieving, online forming and dehydration. Pressing, pre-drying, surface sizing and then drying, calendering, coiling, and packaging are made into baking base paper.

[0033] Surface sizing process: starch surface glue concentration 12.5%, sizing amount 50kg / ...

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Abstract

The invention relates to a preparation process of baking raw paper. Bleached sulfate needlebush chemical pulp and bleached sulfate broadleaf wood chemical pulp are used as fiber for papermaking; a finished product is obtained through the steps of pulp sieving by thick pulp sieve, proportioning, slushing, sand removal and gas removal, sizing, fine sieving, net part dewatering shaping, squeezing, pre-drying, surface glue application, post drying, calendering, rolling and packaging. The raw paper prepared by the process has the advantages of high physical intensity (including deflection and folding resistance), high-temperature resistance, good dimension stability, uniform thickness, good smoothness, small surface adsorption performance and good shaping performance.

Description

Technical field [0001] The invention belongs to the field of papermaking, and specifically relates to a process for preparing baking base paper. Background technique [0002] With the improvement of our national living standards, the amount of paper-baking paper used for baking biscuits, bread, cakes, puffs, and steamer mats has increased significantly, and the amount of baking paper (baking paper after coating and siliconization) has also been correspondingly increased. increased badly. Baking base paper requires high physical strength, can withstand high-temperature drying, requires good dimensional stability, prevents shrinkage and deformation during post-processing, and requires uniform thickness and good smoothness to ensure the flatness of post-processing , Uniformity. In addition, it requires a small surface absorbency to reduce the consumption of the release agent. The product is used for baking biscuits, bread, cakes in the later stage, and needs to be folded and corrug...

Claims

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Application Information

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IPC IPC(8): D21C5/00D21F11/00D21H17/67D21H21/16D21H21/20
Inventor 朱宏伟刘成良刘春景周金涛李丹
Owner YUEYANG FOREST & PAPER CO LTD
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