High Quality Dry Modification Specialty Paper Manufacturer & Supplier

Dry Modification Process

Manufactured in a strict Class 10,000 dust-free workshop, TONLI Dry Modification adopts a fully solvent-free physical coating to upgrade paper fiber properties at source. Different from traditional wet coating, it delivers permanent anti-static, halogen-free, and moisture-resistant performance with zero solvent residue.

Complying with RoHS & REACH global standards, stable processing guarantees consistent quality across batches, ideal for separator paper used in semiconductor and precision electronic component protection.

Your End-to-End Specialty Paper Service Partner

From custom product development to full-cycle project support, from brand texture co-creation to reliable global delivery, TONLI, with over 20 years of industry expertise, delivers professional, efficient, and hassle-free specialty paper solutions. While you focus on growing your brand, we build a solid foundation for your product’s paper presence.

Process Standards

From cleanliness to environmental protection, every step is carefully controlled to ensure stable and reliable product quality.

Class 10000

Cleanliness

Produced in Class 10000 clean workshop with zero paper dust and solvent residue.

10⁶-10¹¹Ω

Surface Resistance

Permanent antistatic performance meeting semiconductor ESD protection requirements.

≤1ppm

Sulfur & Halogen Free

Far below industry criteria to avoid corrosion damage to precision components.

IPX4

Moisture Resistance

Effectively blocks moisture infiltration and prolongs storage cycle.

≥99%

Functional Layer Adhesion

Coating hardly falls off and guarantees long service life.

Wet-forming Process

Five sequential procedures from base paper finishing to dust-free coating strictly control cleanliness and performance to build high-standard dry modification system.

Substrate Preparation

Industrial base paper made via wet forming is dedusted and static-eliminated to meet cleanliness standards. Even fiber arrangement provides stable physical support for subsequent functional coating and prevents coating peeling as the foundational procedure.

Cleanroom Pre-treatment

Base paper is conveyed into a Class 10,000 cleanroom for secondary dust removal and static elimination. As a critical pre-process, it removes dust and static risks to keep the substrate free of surface contaminants and prevent coating defects.

Dry Functional Treatment

Electrostatic spraying and vacuum evaporation form a compact functional coating on the paper surface to deliver anti-static, anti-corrosion, and moisture-proof performance with zero solvent and no harmful residue, superior to traditional wet coating in environmental performance.

Functional Layer Curing

Low-temperature curing tightly bonds the functional layer to the substrate against peeling. Precisely controlled heating protects original paper toughness without thermal damage, balancing adhesion and paper property to secure consistent finished quality.

Inspection & Packaging

Products are tested for surface resistance, cleanliness, and risk substances in compliance with RoHS & REACH. Qualified goods are vacuum-packed to block dust and moisture, prevent contamination during transit and storage, and ensure direct delivery to clients’ clean workshops.

Advantages of Dry Modification Process

Outstanding advantages in cleanliness, performance, environmental compliance and customization meet high-end electronics paper demands.

High Cleanliness

Produced in a Class 10000 clean workshop with zero paper dust and solvent residue, it satisfies the strict cleanliness requirements of the semiconductor industry. The Class 10000 environment enables every sheet of industrial paper to achieve electronic-grade cleanliness criteria.

Stable Performance

Permanent anti-static, sulfur-free, and halogen-free properties; the functional layer boasts ≥99% adhesion against peeling and a long service life. Its performance barely degrades with fluctuating temperature & humidity or long-term storage.

Eco Compliance

Solvent-free and zero-VOC formulation certified as compliant with REACH & RoHS, conforming to European and American industrial norms. It helps clients fulfill global supply chain environmental compliance requirements and reduce export trade barriers.

Flexible Customization

Customizable surface resistance, moisture-proof grade, and anti-corrosion performance to flexibly fit diverse industrial fields, including semiconductors, photovoltaics, and precision instruments.

Core Equipment

Full dry production line with zero solvent creates residue-free eco-friendly specialty paper.

Electrostatic Spraying Equipment

Precision electrostatic spraying system achieves uniform functional coating with controllable thickness and firm bonding between the functional layer and base paper.

Vacuum Evaporation Machine

Physical vapor deposition equipment under high vacuum forms a nano-functional film on base paper for anti-static and anti-corrosion features.

Ion Fan Array

A comprehensive ion fan antistatic system within the cleanroom ensures electrostatic safety for the base paper and finished products throughout the entire production process.

Class 10000 Cleanroom System

A complete air purification and temperature/humidity control system maintains a Class 10,000 clean environment, equipped with real-time cleanliness monitoring.

Cleanliness Testing Equipment

Professional testing instruments will check surface resistance, cleanliness, and hazardous substances to ensure each batch meets standards.

Explore More Production Processes

Wet-forming

Wide-width wet forming precisely controls stock flow and dewatering for uniform fiber distribution and consistent sheet caliper. Supported by 110,000-ton annual capacity, it supplies stable base stock ready for subsequent embossing & coating finishing.