Dry Strength Agent (DSA)

I. Brief Introduction

Core Functions

Core Advantages

Common Types

• Modified starch: low cost, eco-friendly, widely used for low-grade paper

• Cationic / amphoteric PAM: mainstream product, low dosage and stable performance

• Modified high-end polymers: superior strength, suitable for high-speed paper machines

Applications

II. Latest Industry News (2025–2026, Abbreviated)

1. Bio-based green dry strength agents become mainstream

   Domestic and overseas manufacturers are phasing out traditional chemical additives. Mass production of starch-based and bio-composite dry strength agents expands to meet the papermaking industry’s low-carbon and biodegradable policies.

   
   

2. Rising recycled paper demand drives higher consumption of dry strength agents

   China’s waste paper recycling rate keeps rising. Recycled fibers have inferior inherent strength, so paper mills increase dry strength agent dosage to meet paper strength standards.

   
   

3. Accelerated domestic substitution of high-performance modified dry strength agents

   Technologies of new aldehyde-modified and amphoteric composite dry strength agents are mature, with better cost performance than imported equivalents, widely adopted by mills running high-speed machines and producing premium packaging paper.

   
   

4. Cost reduction and paper lightweighting are core industry demands

   Paper mills adopt cost-effective dry strength agents to realize lightweight paper production. Less pulp is consumed without sacrificing strength to offset surging raw material prices.