Packaging paper high consistency refining:

For treating waste paper pulp, the high consistency refining system can significantly increase burst strength and folding endurance, and enhance internal bonding strength. Packaging paper uses recycled waste paper as raw material has problems of difficult to guarantee the strength performance indicators including folding resistance, burst resistance, ring pressure, etc. In large-scale production, it is necessary to add higher-priced high-quality fibers and reinforced chemical materials. To ensure the required strength of the paper, the cost increases and the water treatment system is more difficult to deal with. The high-consistency refining system provided by Genda can solve this problem. We have cooperated with many customers and have completed the construction and renovation of more than 30 production lines. Our solution covers various needs of customers: innovative technology, reliability and operability, advanced automation solutions and general contract engineering services, to ensure our client improve paper performance and reduce operating costs while maintaining smooth operation.

1. Process technology

The advantages of high-consistency Refining applied to packaging paper:

• It can effectively improve the strength properties of paper, such as breaking resistance, folding resistance, ring pressure, etc., by 20~50%;

• Improve internal bonding strength, improve stiffness and tightness, and reduce filling loss;

• Reduce the amount of imported waste paper and chemicals while maintaining the same strength;

• Compared with low-consistency refining, the fiber retention rate is high, and the white water concentration under the wire-mesh is low, and the reduction range is 15~25%, which can effectively reduce the production cost;

• Compared with low-consistency refining, due to the effective retention of fiber length while HC refining, the reduction of short fibers and the improvement of fiber water filtration performance, the improvement range is about 10%, and the paper machine rolling speed can be increased by 1~5%;

• Compared with low-consistency refining, it can also reduce power consumption;

2. Solution

Image: Process Design Drawing                                                                        Engineering site work photos

We always maintaining close cooperation with customers, so that we can develop targeted products and processes according to the characteristics of raw materials and paper grades, to meet the needs of customers in terms of product improvement or cost reduction. We provide a package of solutions including process design, equipment selection and supply, advanced process control system with one-key connection with upper and downstream equipment, guided installation services, and general contract engineering services.

3.  High-valued customer project case

      Case study 1

Picture: High Consistency refining Reconstruction Project of Sun Paper Containerboard machine No. 31, 32, 35, 36

Time and place: 2018 Sun Paper Shandong Yanzhou

Paper machine: Voith Paper board machine with an annual output of 600,000 tons

Customer Project Requirement: stable folding resistance, improved bursting resistance

Genda Solution: Two sets of Genda HCR1100 high-consistency Refining system

       Implementation results: The folding endurance of the containerboard paper is stabilized (especially in winter), and the bursting resistance is increased by 20%

  Case study 2

Picture: Hengshan Xinjinlong core-board paper low-consistency refining transformation case (two sets high-consistency refining system)

Case Study:

Time and Location: 2020 Hunan Hengshan Xinjinlong Paper Co., Ltd.

Paper machine: 4800 single fourdrinier multi-cylinder paper machine

Customer Project Requirement: Quality Improvement

Genda Solution: Two sets of HCR1100 high-consistency refining system

Implementation results: The product quality has reached B-level standard from C-level. Paper appearance quality is obviously improved, mainly due to the reduction of pulp point and dust point; the bonding strength between layers is increased by more than 100J, and the ring compressive strength is increased by 20%.