The Global Internal Sizing Agents Market was valued at USD 3.2 Billion in 2024 and is projected to reach USD 4.5 Billion by 2030, growing at a Compound Annual Growth Rate (CAGR) of 5.8% during the forecast period (2024–2030). This growth is being propelled by the rising demand for high-quality paper and packaging materials, stringent environmental regulations for paper production, and technological advancements in bio-based sizing agents.

As the global paper industry evolves towards greater sustainability and operational efficiency, the focus intensifies on the key chemical suppliers that are pioneering innovative solutions for papermaking. Internal sizing agents are essential additives mixed into the pulp slurry to render paper and paperboard water-resistant, preventing ink feathing and ensuring print quality. In this blog, we profile the Top 10 Companies in the Internal Sizing Agents Industry—a combination of global chemical giants and specialized manufacturers defining the future of paper performance.

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🔟 1. Kemira Oyj

Headquarters: Helsinki, Finland
Key Offering: AKD-based sizing agents, ASA-based sizing agents, Rosin-based sizing agents

Kemira is a global leader in pulp and paper chemicals, with a comprehensive portfolio of internal sizing agents. The company’s solutions, such as the Fennosize® and Fennosil® ranges, are designed to enhance paper’s resistance to water, ink, and other liquids, catering to various paper grades from fine paper to packaging board. Kemira’s strong R&D focus ensures products meet evolving environmental standards.

Innovation and Sustainability Focus:

• Development of high-performance bio-based sizing agents

• Focus on reducing the environmental footprint of paper production

• Global production footprint with local technical support

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9️⃣ 2. BASF SE

Headquarters: Ludwigshafen, Germany
Key Offering: Basoplast® (ASA), Basosize® (AKD), Rosin-based sizing agents

BASF is a major supplier of chemical solutions for the paper industry, offering a wide range of internal sizing agents under its Basoplast and Basosize brands. These products provide excellent sizing efficiency and runnability on paper machines, making them suitable for packaging, writing, and printing papers. BASF’s global scale and technical expertise make it a key partner for paper mills worldwide.

Innovation and Sustainability Focus:

• Investment in sustainable product development and circular economy principles

• Solutions that enable paper recycling and improve process efficiency

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8️⃣ 3. Solenis LLC

Headquarters: Wilmington, Delaware, USA
Key Offering: AKD Emulsions, ASA Emulsions, Performance Polymers for Sizing

Solenis is a leading global producer of specialty chemicals for the pulp, paper, and packaging industries. The company’s internal sizing agents, including advanced AKD and ASA emulsions, are engineered for fast curing, high efficiency, and improved paper machine performance. Solenis provides tailored solutions to optimize sizing performance while reducing overall chemical consumption.

Innovation and Sustainability Focus:

• Focus on water-saving and energy-efficient sizing technologies

• Portfolio aligned with sustainable papermaking practices

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7️⃣ 4. SEIKO PMC CORPORATION

Headquarters: Tokyo, Japan
Key Offering: AKD Sizing Agents, Cationic Rosin Sizing Agents, Neutral Sizing Agents

SEIKO PMC is a prominent specialty chemical company with a strong focus on paper chemicals. It offers a diverse range of high-quality internal sizing agents that ensure superior water resistance and printability. The company has a significant presence in the Asian market and is recognized for its innovative and reliable products.

Innovation and Sustainability Focus:

• Strong R&D capabilities for developing advanced sizing chemistries

• Commitment to providing environmentally friendly papermaking solutions

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6️⃣ 5. Plasmine Technology, Inc.

Headquarters: Bangor, Maine, USA
Key Offering: Fortified Rosin Sizes, Emulsion Rosin Sizes, Neutral Sizing Agents

Plasmine Technology is a key player specializing in rosin-based internal sizing agents. As one of the largest producers of tall oil rosin in North America, the company offers a range of fortified and emulsion rosin sizes known for their effectiveness in acidic and neutral papermaking conditions. Their products are essential for producing sizing-effective and cost-efficient paper.

Innovation and Sustainability Focus:

• Utilization of renewable, bio-based raw materials (Tall Oil)

• Focus on product consistency and performance optimization

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5️⃣ 6. Harima Chemicals Group, Inc.

Headquarters: Tokyo, Japan
Key Offering: Rosin-based Sizes (Pensize), AKD Sizes, Synthetic Sizes

Harima Chemicals is a leading global supplier of rosin and rosin-based chemicals, including a comprehensive line of internal sizing agents. Its flagship “Pensize” products are widely used in paper mills across Asia and beyond. The company’s expertise in rosin chemistry makes it a vital supplier for traditional paper sizing applications.

Innovation and Sustainability Focus:

• Development of high-performance, environmentally compatible sizing agents

• Strategic expansion to serve global paper markets

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4️⃣ 7. Arakawa Chemical Industries, Ltd.

Headquarters: Osaka, Japan
Key Offering: Rosin-based Sizing Agents, Neutral Sizing Agents, Surface Sizing Agents

Arakawa Chemical is a well-established Japanese chemical company with a long history in the paper industry. It manufactures a variety of internal sizing agents derived from rosin and synthetic materials, designed to meet the specific needs of different paper grades and production processes, particularly in the Asian market.

Innovation and Sustainability Focus:

• Continuous improvement of product performance and manufacturing processes

• Focus on sustainable sourcing and production

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3️⃣ 8. Finor Piplaj Chemicals

Headquarters: Mumbai, India
Key Offering: AKD Wax, AKD Emulsion, Rosin Size

Finor Piplaj Chemicals is a significant manufacturer of paper chemicals in India, specializing in internal sizing agents like AKD Wax and its emulsions. The company serves the fast-growing paper and packaging industry in South Asia, providing cost-effective and efficient sizing solutions tailored to regional mill requirements.

Innovation and Sustainability Focus:

• Catering to the specific needs of the South Asian paper market

• Focus on product quality and customer support

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2️⃣ 9. Buckman

Headquarters: Memphis, Tennessee, USA
Key Offering: Neutral Sizing Agents, Acid Sizing Agents, Performance Additives

Buckman is a global specialty chemical company known for its customer-focused approach and innovative solutions for the paper industry. Its internal sizing agents are part of a broader portfolio designed to improve paper quality, machine efficiency, and sustainability. Buckman’s technical service team works closely with mills to optimize sizing performance.

Innovation and Sustainability Focus:

• Application expertise and customized solutions for paper mills

• Commitment to responsible chemical management and sustainability

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1️⃣ 10. Evonik Industries AG

Headquarters: Essen, Germany
Key Offering: TEGO® Sorb (liquid sorbitol-based), Specialty additives for paper

Evonik, a global leader in specialty chemicals, offers advanced additives for the paper industry, including components and technologies that support internal sizing processes. While not a traditional sizing agent producer, its performance materials enhance the effectiveness of sizing formulations and other paper chemicals, contributing to improved paper properties.

Innovation and Sustainability Focus:

• Development of high-value specialty additives for enhanced paper performance

• Strong focus on innovation and sustainable solutions across its portfolio

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🌍 Outlook: The Future of Internal Sizing Agents is Sustainable and High-Performance

The internal sizing agents market is undergoing a significant transformation. While traditional rosin-based agents still hold a substantial share, the industry is increasingly shifting towards neutral and alkaline sizing with AKD and ASA, driven by the demand for higher paper quality, machine efficiency, and environmental compliance.

📈 Key Trends Shaping the Market:

• Rising demand for bio-based and renewable sizing agents

• Shift from acidic to neutral/alkaline papermaking processes

• Increasing need for recyclable and compostable packaging materials

• Technological advancements leading to high-efficiency, low-dosage sizing agents

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Internal Sizing Agents Market – View in Detailed Research Report

The companies listed above are not only supplying essential chemicals to the global paper industry—they are driving the innovation and sustainability required for its future growth.