Specialised Paper Machine for Specialty Paper

Comparison Table of Key Differences Between Speciality Paper Machine and Standard Paper Machine

Comparison Criteria

Standard Paper Machine

Speciality Paper Machine

Design Focus and Product Range

General-purpose: Focuses on high-volume, low-cost production of cultural paper (copying paper, writing paper), packaging paper, newsprint, etc. Performance specifications are lenient and highly standardised.

Specialised: Focuses on small-batch, high-value-added production, customised to meet the needs of specific industries or even specific paper types. Specifications are stringent and designs are often non-standard.

Forming System

Primarily uses a long-wire forming system, featuring a simple structure and low cost; fibre orientation is generally moderate and uniformity requirements are not high.

Employs multi-layer headboxes, combined forming systems such as wire-clamp / inclined wire / circular wire – long-wire configurations, etc., to precisely control fibre distribution, porosity and thickness uniformity, meeting requirements for thin sheets, high density and high strength.

Pressing and Drying

Conventional roller pressing and steam-heated cylinder drying, prioritising efficiency with moderate control precision.

Boot press, vacuum hot rollers, and infrared/microwave-assisted drying, suitable for high-filler, wet-strength and specially coated papers, offering low damage and good dimensional stability.

Control System and Precision

Basic automation, basis weight deviation ±3–6 g/m², coarse tension control.

Fully digital servo system, closed-loop tension control, AI-based quality feedback, basis weight deviation ≤±1–2 g/m², thickness coefficient of variation ≤2–3%, comprehensive online detection and adjustment.

Structure and Material

Primarily carbon steel, with a simplified structure; suitable for medium web widths and line speeds.

Key components made of stainless steel or alloys, offering corrosion resistance and high cleanliness; modular design for easy changeovers.

Process Compatibility

Suitable only for standard wood pulp and waste paper pulp, with minimal or no addition of special chemicals.

Compatible with wood pulp, bamboo pulp, synthetic fibres and mineral fibres; capable of performing coating, sizing and impregnation operations inline, with the addition of functional fillers and additives.