High Quality Specialty Paper Wet Forming Process Manufacturer & Supplier

Wet-forming Process

Wet-forming is the core of specialty papermaking. Premium wood pulp is dispersed in water and shaped via precision wire forming, pressing and drying to deliver base paper with stable surface and customized physical attributes.

TONLI’s four modern wet-forming lines feature deckle widths of 1880mm, 2450mm, 2700mm and 3600mm. With an annual capacity of 110,000 MT, we produce 90–400gsm black card, colored card and converting base paper.

Wet-forming Process

Tonli’s four modern wet-forming lines feature deckle widths of 1880mm, 2450mm, 2700mm and 3600mm. With an annual capacity of 110,000 MT, we produce 90–400gsm black card, colored card and converting base paper.

Process Standards

Process specifications are precisely controlled to ensure stable paper quality & batch uniformity.

Folding Endurance

≥100 folds

Resists cracking under repeated bending, compatible with hot stamping, die-cutting and other post-processing.

Color Deviation Control

ΔE ≤ 0.5

Restrict color variation within the same batch & across different batches for consistent shade of premium black & colored cardstock.

Batch Consistency

Batch fluctuation ≤3%

Standardized full-process production minimizes physical indicator discrepancies among production lots.

Finished Product Pass Rate

Pass rate 99.8%

Full-range incoming inspection eliminates defective goods to sustain stable consistent quality for bulk supply.

Color Fastness

Grade ≥6

Fade-resistant for long-term application to retain lasting packaging appearance.

Moisture Control

Moisture content 6%–8%

Stabilizes dimensional shrinkage & expansion to prevent curling/deformation during converting.

Wet-forming Process

Built around full-process compatibility as core design logic, our standardized wet forming regulates fiber formation across all production stages. Key properties, including dimensional stability and tensile strength, are optimized at the base paper level to accommodate all types of post-paper converting.

Raw Material Fiber Ratio

Selected high-quality wood pulp, including a proportion of recycled pulp, is used, with the fiber ratio adjusted according to product positioning. Through high-consistency pulping and fiber separation, the increase in volume is maximized while preserving the natural length and strength of the fibers, laying the foundation for high-quality substrates.

Pulp Preparation and In-Pulp Dyeing

The freeness is strictly controlled at 38~42°SR to achieve uniform fiber dispersion; in-pulp dyeing ensures color penetration into the fibers, excellent color fastness, and no white showing at folded edges.

Wire Section Dewatering and Forming

Core process intervals. The pulp is evenly sprayed onto the preparation wire through the headbox, and the filtration rate is controlled to form the wet paper web. TONLI's emphasized flow field control technology ensures highly uniform fiber distribution and optimal warp and weft strength ratios.

Press Width

The wet paper web enters the press section, passing through multiple progressive press rolls to remove moisture and improve fiber bonding strength. Precise linear pressure control prevents paper crushing while maintaining acquired bulk.

Drying and Curing

A multi-cylinder drying system is used, employing a gradient drying process from 80-135℃ to eliminate internal stress in the paper, stabilize dimensions, and improve stiffness. Surface treatment is performed simultaneously during the drying process to optimize printability.

Rolling, Slitting, and Quality Inspection

Finished paper rolls are automatically layered and rolled by an online quality inspection system. They are then slit to specified dimensions according to order requirements and shipped with a QC report.

Advantages of Wet-forming Process

Full-process precision control creates a high-grade specialty card via four key merits.

Uniform Fiber Distribution & Stable Quality

Custom flow and cutting control systems ensure even fiber layout with CV ≤8%, outperforming industry norms to minimize printing deviation and sheet deformation.

Premium Black Shade & Superior Color

Internal bulk dyeing achieves L*≤18 with no edge whitening after folding; light fastness ≥ Grade 6 for long-term fade resistance.

Wide Grammage Range for Diversified Needs

Full production from 90–400gsm, ideal for cosmetic, wine, electronics and luxury gift packaging.

Eco-compliant Green Manufacturing

On-site advanced wastewater treatment ensures legal discharge; recycled pulp blending enables low-carbon sustainable production.

Core Equipment

Professional wet-forming equipment enables precise full-process control to sustain consistent premium quality.

Automatic Wet Forming Paper Machine

Integrated full-line equipment covering stock preparation, forming, pressing & drying, supporting 90–400gsm versatile cardstock production.

Internal Stock Dyeing System

In-bulk fiber dyeing unit for thorough pigment penetration, delivering deep black at L*≤18 with no edge whitening.

Online Quality Inspection Equipment

Real-time tester monitoring grammage, shade, formation & defects to control CV and color deviation.

DCS Central Control System

Digital distributed control hub regulating full-process parameters to eliminate manual errors and stabilize product consistency.

Explore More Production Processes

Surface Finishing & Embossing

Post-forming texture processing with 29 regular embossing patterns & custom roller development. Combinable with dyeing & coating to upgrade the texture for premium gift packaging.