Paper Retention and Drainage Aid

Paper Retention and Drainage Aid

Paper retention and drainage aid After years of research, Quansen has produced high quality retention and drainage aids, through multivariate polymerization, which can significantly improve the retention effect of paper pulp, and the drainage speed is significantly accelerated, which is 10%...

Product Details

Paper retention and drainage aid

After years of research, Quansen has produced high quality retention and drainage aids, through multivariate polymerization, which can significantly improve the retention effect of paper pulp, and the drainage speed is significantly accelerated, which is 10% higher than that of ordinary products.


working principle

●  Retention

In papermaking, fillers are the auxiliary materials with the largest dosage, and the particle size is generally 0.2-10 mesh, while the copper net mesh used  in paper machine is relatively large, ranging from 40 to 100 mesh, which is equivalent to 150-250 µm.Generally in the process of forming, only about 50% of the packing retention rate, the remaining half will be lost with the white water.Retention aids can coagulate and flocculate, so they can be used to improve the retention rate of fine fibers and fillers in paper and reduce the solid content of fine materials in water.

A wide variety of retention agent, according to the structure and property of the retention agent can be divided into inorganic and organic polymer, surfactant, including organic polymer retention agent with a total of 23 kinds, mainly organic amine (ammonium salt derivatives is given priority to, with polyoxyethylene (PEO), starch, etc., among them with polyacrylamide the most representative.

○  Bridging adsorption

CPAM products are based on charge adsorption and bridge interaction to realize retention.Different from the traditional product with few bridging adsorption points (top and bottom two points), the branched chain of quansen paper making agent can provide a large number of different adsorption points, so that the number and size range of particles selected for bridging adsorption by single molecules is greatly expanded!

○  Charge of adsorption

CPAM products of another adsorption, retention and principle is charge by gather into cationic monomer in the polymerization process to realize, but simply add and aggregation, and can't make the cationic monomer and molecular chain good integration, a lot of product ion monomer dissociation outside the chain, or with the adhesion strength of the chain is very small, easy to spread.

Quansen papermaking retention and drainage aids by not saturated adsorption technology, the ion monomer solid adsorption on the belt of branched chain, the ion monomer is really effective ion monomer, if a product has no adsorption technology, so this kind of product can't compare with quansen paper retention and drainage aids, especially in low speed, unit retention and papermaking, adding more even if the product ion monomer, nominal ion degree is high, vain, also easy to discharge directly with water.

By introducing other copolymer, quansen paper making agent can make the positive molecule become strong positive, thus greatly increasing the charge adsorption capacity.


Retention and drainage aids is a chemical added to improve the water drainage and dehydration rate of wet paper from the net.The drainage aid can flocculate the fine fiber on the surface of the fiber, reduce the blockage of the wet paper hole and increase the permeability. Drainage and retention are linked in promoting the flocculation of dispersions.So there are a lot of similarities in terms of performance.The main types of retention and drainage aids are polyethylenimine, polyacrylamide, polyamine amide, cationic ethylene series of polymers.The primary filter aid is polyethylenimine.Later, due to the reduction of polyacrylamide price and the development of various modified polyacrylamide, PAM gradually became the main application.

The uniform molecular weight and molecular structure of quansen additive bring about the uniform flocculation. The distribution of these flocculations on the paper network is obviously different from that of non-use of macromolecular flocculant or other products with uneven molecular weight.

When no macromolecular flocculant is used, the size of the slurry fibers and fillers is different, and automatic spatial distribution is carried out on the paper network due to the effect of gravity. Small substances are filled between the particles through large material gaps, forming dense barrier layer, and seriously reducing the indrainage rate of water.

The flocculation can prevent the particles from being compactly arranged by the size of the material, and the small substances used to fill the gap can be flocculated, which can effectively free up the indrainage space of water and accelerate the drainage rate.However, the non-uniform flocculation, especially the flocculation caused by the products with seriously different molecular weight, has a significant difference in grain size. The small flocculation can also enter the gap between the large flocculation and reduce the water indrainage rate.





Quansen can provide a wide range of high molecular polymer products. It has broad applicability for fiber and filler. It can improve retention rate of mesh fiber、filler and accessories, save fiber and various additives, increase ash content in paper, improve dewatering efficiency in wire and press section, save steam, improve machine speed, reduce pulp concentration, which helps to maintain good paper evenness, reduce deposits formed in paper machine system due to small components and colloids. Optimize and stabilize overall process operation in wet end. Reduce COD and BOD discharging, bring more economic benefits for customers.

.  Wrapping paper

.  Coated paper

.  Offset paper

.  Newspaper

.  Cardboard

.  Other papers



Pulp and paper chemicals.

chemical name

Papersupport® series of solid polymer retention and drainage aid

chemical composition

Papersupport® 2600 series cationic polyacrylamide powder solid state, is dedicated for papermaking wet end retention and drainage aid. Papersupport® 2600 series adopts specialized advanced polymer technology, has high product purity, high molecular weight, good water solubility, low insoluble features, for the fiber and bulking ageng has extensive adaptability.


product serie

product name


molecular weight(106)

Ion degree(%)

Dissolution duration(H)

Solid content(%)



White particle







White particle







White particle






●  Add operation

Papersupport ® 2600 series product requirements first mixture 0.3% concentration of curing solution with water.The preparation of curing solution was made by using automatic/semi-automatic barrel tank type polymer foam dispenser.The mixing type of the dissolution tank requires a soft mode to avoid the influence of the shear force of the polymer chain.Water temperature kept at 15 to 30℃ is advisable.The curing time is 60 minutes.

The curing solution should not be stored for more than 8 hours. It is recommended to be used with the solution.Before adding the slurry, the curing solution needs to be further diluted to 0.01~0.1%.The dilution operation can be performed online using a static mixer.

●  Add site

Adding polymer retention agent point should be close to the cages, but in order to ensure that agents mixed with pulp have plenty of time, to avoid excessive floccules, select add commonly before the pressure screen.Individual paper machines can also be added to the pressure screen due to process conditions.When the agent solution is added to the pulp, it should be uniform, fast and fully dispersed into the slurry.For large pipe diameter slurry conveying pipe, it is recommended to use four points of circular tube.

●  Dosage

For the vast majority of pulp and process conditions and the papersupport ® 2600 series reagent adding quantity as follows: 0.10 ~ 0.50 kg/ton of paper.The optimum dosage depends on the actual machine trial and optimization operation.

Please contact our technical service manager for technical questions about the application.


1. Papersupport ® 2600 series of water-soluble polymer, in case of water or liquids of high skid form is formed after soluble in water.Prevent products and their aqueous solutions from spilling onto the floor.If any, should timely use sand, sawdust adsorption, clean it.

2. The product is powder, the operation room should be careful to prevent dust inhalation or adhesion to the body.Wear masks, gloves and overalls to operate according to specifications.

3. Please refer to the safety data manual (MSDS) provided by the company for detailed safety operation guidance.

4. This product and its aqueous solution are not corrosive to the general materials such as stainless steel, plastic, rubber, glass and glass, etc., for the manufacture of tanks, mixers, gauges and pipelines.


1. Improve the retention rate of fiber, packing and auxiliary materials.

2. Save fiber and various additives.

3. Increase the ash in the page and reduce the cost.

4. Improve the dewatering efficiency of the network and press, save steam and improve the speed.

5. Reduce the concentration of online slurry, thus helping to maintain good uniformity of paper.

6. Reduce the paper machine system due to small, colloidal sediments.

7. Balance and stabilize wet part overall process operation.

8. Reduce COD and BOD in effluent from paper machine.

9. Help factories to achieve higher comprehensive economic and social benefits.



1、High and stable product quality
2、Varieties of product series
3、Customer designed system solutions
4、Professional technical service team
5、Accumulated experiences of successful application at customer’s side

Quansen provides paper applications polyacrylamide products used as papermaking retention and drainage aids, dispersing agents papermaking fibers, product quality and stability agent, the effect is obvious, can significantly improve paper quality, increase productivity, reduce cost of production, by the paper firms.


The original product shall be kept sealed.Storage environments should be a cool, dry and ventilated, at room temperature for 10 ~ 40 ℃.Special precautions should be taken to prevent product absorption.

In accordance with the specified storage conditions, the original packaging products can be stable for at least 12 months.


25kg composite paper bag /750kg pallet OR customer demand.

Hot Tags: paper retention and drainage aid, China, suppliers, manufacturers, factory, made in China


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