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Specialized antifoams for processes using sizing agents, particularly in the pulp and paper industry, are designed to eliminate foam without hindering the hydrophobic performance of the size. These agents are crucial for maintaining coating uniformity, drainage, and paper strength in the presence of emulsified sizing chemicals like AKD or rosin.
Recommended Antifoam Types for Sizing Processes
- Fatty Alcohol Defoamers: Highly recommended for papermaking white water and wet-end applications due to their high efficiency and compatibility with sizing agents.
- Polyether Defoamers: Another preferred choice for paper mills, offering strong performance against foam generated in the presence of fillers and sizes.
- Silicone Emulsions: Highly efficient at low dosages and ideal for long-lasting, heavy-duty foam control, particularly for pulp washing and black liquor, though they must be specifically formulated to avoid interference with surface sizing efficiency.
- Specialty Blend Defoamers: Examples include, such as the high-carbon alcohol polyether ester (BLU IJA), which is designed specifically to be compatible with AKD emulsions, ensuring foam control without reducing paper strength or causing defects.
Key Considerations
- System Compatibility: Defoamers must be insoluble in the medium to be effective.
- Application Stage: They are typically added to the wet end, the paper machine, or directly into the sizing preparation stage.
- Performance Metrics: High-performance defoamers for sizing improve drainage and prevent pinholes or craters, which can be caused by excessive foam.
For specific, industrial-grade formulations adapted for sizing, specialty chemical manufacturers provide tailored solutions like those available on AntifoamChemical.com or Rickman Chemical.
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Web results
antifoam for processes using sizing agents
antifoamchemical.com
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antifoamchemical.com
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Looking for professional antifoam manufacturers? Antifoamchemical specializes in producing antifoam for processes using sizing agents,wholesale now!
China paper sizing antifoam Manufacturers ...
xiamen rickman chemical technology co., ltd
https://www.rickmanchemical.com › blog › paper-sizing-...
xiamen rickman chemical technology co., ltd
https://www.rickmanchemical.com › blog › paper-sizing-...
Mar 25, 2023 — Antifoam is a type of chemical additive used in the pulp and paper industry to reduce foam formation during the pulping process. It is typically ...Read more
Surface Sizing Anti-Foaming Additive Defoamer for ...
waterpurifyingchemicals.com
https://www.waterpurifyingchemicals.com › sale-526591...
waterpurifyingchemicals.com
https://www.waterpurifyingchemicals.com › sale-526591...
Anti-Foaming Additive Defoamer for Papermaking is a foam control agent designed to reduce excessive foam in pulp and paper production.Read more
· Review by anonymous
People also ask
What can I use as an anti-foaming agent?
Product Recommendations
- Silicone Antifoam Compound.
- Silicone Antifoam Powders.
- Silicone Antifoam Emulsions.
- Self-Dispersing Antifoam Concentrates.
Antifoams for Household & Cleaning - Wacker Chemie AG
Wacker Chemie AG
https://www.wacker.com › products › antifoam › antifoam
Wacker Chemie AG
https://www.wacker.com › products › antifoam › antifoam
What are the disadvantages of antifoaming agents?
Disadvantages of Silicone Based Defoamers
Silicone-based antifoam is relatively poor durability. Silicone is oil soluble, and it reduces the defoaming effects in oil systems. It is not ideal for long-term high-temperature resistance and strong alkali resistance.Jan 20, 2022
Silicone-based antifoam is relatively poor durability. Silicone is oil soluble, and it reduces the defoaming effects in oil systems. It is not ideal for long-term high-temperature resistance and strong alkali resistance.Jan 20, 2022
Advantages and Disadvantages of Silicone Defoamers- NAQ Global
NAQ Global - Home.blog
https://naqglobal.home.blog › 2022/01/20 › silicone-def...
NAQ Global - Home.blog
https://naqglobal.home.blog › 2022/01/20 › silicone-def...
What is an antifoam agent used for?
Antifoaming agents are substances that prevent the formation of air bubbles in coating solutions, which can disrupt the flow and quality of the coating. Common examples include simethicone and other silicon derivatives, such as dimethicon. How useful is this definition?
Antifoaming Agent - an overview | ScienceDirect Topics
ScienceDirect.com
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ScienceDirect.com
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What are the different types of anti foam?
Antifoams are chemical agents designed to control the wasteful formation of foam during industrial processes. They come in many different forms including mineral oil, silicone, natural organic and synthetic organic, and the appropriate kinds will depend on the type of foam that needs to be prevented.Jan 7, 2025
The Role of Antifoams in Industrial Water Treatment - Enva
Enva
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Enva
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Web results
Surface Sizing Agents ..
Indian Pulp & Paper Technical Association
https://ippta.co › wp-content › uploads › 2021/01
Indian Pulp & Paper Technical Association
https://ippta.co › wp-content › uploads › 2021/01
PDF
by J BungCited by 20 — If such process-technical changes do not prevent foaming, then the foam should be controlled by means of a suitable antifoam. Here care should be taken to ...Read more
15 pages
Antifoaming Agents: What You Need to Know
Crucible Chemical Company
https://cruciblechemical.com › Blog
Crucible Chemical Company
https://cruciblechemical.com › Blog
May 9, 2022 — Industrial and commercial operations use antifoams, defoamers, and air release agents to reduce, control or eliminate foam in liquid processes.Read more
Antifoam selection and use
Remet PIC
https://www.remet.com › insights › antifoam-selection-...
Remet PIC
https://www.remet.com › insights › antifoam-selection-...
The antifoam itself consists of a hydrophobic silica dispersed in a silicone oil in a water emulsion. These disperse very easily and have good knock-down ...Read more
How to Test Antifoam? - Defoamer Manufacturer
ywlchemical.com
https://ywlchemical.com › how-to-test-antifoam-and-tes...
ywlchemical.com
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Jan 19, 2026 — This guide outlines common defoamer testing procedures used in the lab, from standardized methods like the Ross-Miles foam test to dynamic evaluations.Read more
Discussions and forums
What antifoam do you use and how do you use it?
ResearchGate ·
5 answers
· 12 years ago
What antifoam do you use and how do you use it?
ResearchGate ·
5 answers
· 12 years ago
Which Antifoam Agent (in which concentration) can be used for citric acid ...
ResearchGate ·
7 answers
· 9 years ago
Which Antifoam Agent (in which concentration) can be used for citric acid ...
ResearchGate ·
7 answers
· 9 years ago
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Web results
Defoamers and air release agents - selection & tests
BYK additives
https://www.byk.com › defoamers-and-air-release-agents
BYK additives
https://www.byk.com › defoamers-and-air-release-agents
The defoaming effect is the critical selection criterion for a defoamer and there are a variety of test methods used to test this.Read more