CN103911900B - Soybean protein and filler turning property toughener are with the use of the method improving offset paper ash content - Google Patents

Abstract

Soybean protein and filler turning property toughener, with the use of the method improving offset paper ash content, comprise the following steps: 1., by soybean protein slowly join in the water of 50-70 DEG C, fully stir 20-40min, are made into the solution that percentage concentration is 1%; 2., the soybean protein that the percentage concentration joined in 1. is 1% is joined in bleached chemi-mechanical pulp pulping engine by the consumption that 1-4kg/t starches; 3., the bleached chemi-mechanical pulp adding soybean protein in 2. is joined in pond with slurry in the ratio of massfraction 20%; 4., by filler turning property toughener join in the grinding calcium carbonate after dilution by the consumption that 1-4kg/t starches, fully mix; 5., 4. gained is joined 3. in gained slurry through the grinding calcium carbonate that filler turning property toughener is modified. Soybean protein and filler the turning property toughener that the present invention proposes is with the use of the production technique improving offset paper ash content compared with other method, and having is the advantages such as greyness of paper height, paper sheet thickness is big, paper sheet stiffness, surface strength are big.

Description

Soybean protein and filler turning property toughener are with the use of the method improving offset paper ash content

Technical field

The present invention relates to pulp technology for making paper, a kind of soybean protein and filler turning property toughener are with the use of the method improving offset paper ash content specifically.

Background technology

At present, the universal method improving offset paper ash content be cationic starch and Dry Strength Resin with the use of, due to when improving ash content, cationic starch and Dry Strength Resin only can ensure that the tensile strength of paper, tear strength are constant, if ash content improves bigger, paper sheet thickness, surface strength, deflection all can decline, and cause paper quality to reduce.

Summary of the invention

In order to solve, existing technique ash content increase rate is lower, the shortcoming of the decline such as paper sheet thickness, surface strength, deflection, the present invention proposes a kind of soybean protein and filler turning property toughener with the use of the production technique improving offset paper ash content.

The technical scheme of the present invention comprises the following steps:

1., by soybean protein powder slowly join in the water of 50-70 DEG C, stir and be made into the solution that mass percent concentration is 1%;

2., the soy bean proteinous soln that the percentage concentration joined in 1. is 1% is joined in bleached chemi-mechanical pulp pulping engine by the consumption that 1-4kg/t starches;

3., the bleached chemi-mechanical pulp adding soybean protein in 2. is joined in pond with slurry in the ratio of massfraction 20%, namely wet end furnish (NBKP+LBKP): BCTMP=80:20;

4., by filler turning property toughener join in the grinding calcium carbonate that the rear mass concentration of dilution is 10%-20% by the consumption that 1-4kg/t starches, fully mix;

5., by 4. gained join by the consumption that 100-200kg/t starches 3. in gained slurry through the modified grinding calcium carbonate of filler turning property toughener, after mixing, enter paper machine.

Such scheme is more preferably:

Described filler turning property toughener is cationic thermosetting resin, cation superpolymer or polymer-modified silicon solution.

Soybean protein and filler the turning property toughener that the present invention proposes is with the use of the production technique improving offset paper ash content compared with other method, and having is the advantages such as greyness of paper height, paper sheet thickness is big, paper sheet stiffness, surface strength are big. Soybean protein and filler turning property toughener be engaged in offset paper use, become paper ash divide improve 3-4 percentage point, bleached chemical thermomechanical pulp proportioning improve 3-5 percentage point, paper sheet thickness is constant, deflection improve 20%, surface strength improve 10%.

Accompanying drawing explanation

Fig. 1 is the technological process of production block diagram in the present invention.

Embodiment

With reference to Fig. 1, a kind of soybean protein and filler turning property toughener, with the use of the method improving offset paper ash content, comprise the following steps: comprise the following steps:

1., by soybean protein powder slowly join in the water of 50-70 DEG C, fully stir (rotating speed 300 turns/min stirs 20-40min) and be evenly made into the solution that mass percent concentration is 1%;

2., the soy bean proteinous soln that the percentage concentration joined in 1. is 1% is joined in bleached chemi-mechanical pulp pulping engine by the consumption that 1-4kg/t starches;

3., the bleached chemi-mechanical pulp adding soybean protein in 2. is joined in pond with slurry in the ratio of massfraction 20%, namely wet end furnish (NBKP+LBKP): BCTMP=80:20;

4., by filler turning property toughener join in the grinding calcium carbonate that the rear mass concentration of dilution is 10%-20% by the consumption that 1-4kg/t starches, fully mix;

5., by 4. gained join by the consumption that 100-200kg/t starches 3. in gained slurry through the modified grinding calcium carbonate of filler turning property toughener, after mixing, enter paper machine.

Cultural this technique of paper production line application of my company's 9# machine, soy bean proteinous soln is added BCT according to the consumption that 0.8-1.2kg/t starches and starches pulping engine, filler turning property toughener 2-3kg/t joins grinding calcium carbonate feeding tube, the mixing of whole mixing of materials all with after enter paper machine and carry out subsequent operations, the offset paper produced is (existing technique and cationic starch and Dry Strength Resin are with the use of the method improving ash content) compared with the offset paper that existing technique obtains, ash content improves 3%-5%, becomes that paper thickness is constant, deflection improves 20%, surface strength improves 10%. BCT starches proportioning and improves 3-5%, and ton paper comprehensive cost reduces by 8.5 yuan.

Claims (1)

1. a soybean protein and filler turning property toughener are with the use of the method improving offset paper ash content, it is characterised in that, comprise the following steps:

1., by soybean protein powder slowly join in the water of 50-70 DEG C, stir and be made into the solution that mass percent concentration is 1%;

2., the soy bean proteinous soln that the percentage concentration joined in 1. is 1% is joined in bleached chemi-mechanical pulp pulping engine by the consumption that 1-4kg/t starches;

3., the bleached chemi-mechanical pulp adding soybean protein in 2. is joined in pond with slurry in the ratio of massfraction 20%, namely proportioning (NBKP+LBKP): BCTMP=80:20;

4., by filler turning property toughener join in the grinding calcium carbonate that the rear mass concentration of dilution is 10%-20% by the consumption that 1-4kg/t starches, fully mix; Described filler turning property toughener is cationic thermosetting resin, cation superpolymer or polymer-modified silicon solution;

5., by 4. gained join by the consumption that 100-200kg/t starches 3. in gained slurry through the modified grinding calcium carbonate of filler turning property toughener, after mixing, enter paper machine.