Gypsum Board Production Line

High-Efficiency Gypsum Board Production Line: Advanced Technology for Superior Quality and Sustainability

In the modern construction materials industry, the demand for high-quality gypsum board (plasterboard) continues to grow, driven by its versatility in wall partitions, ceilings, and decorative finishes. To meet this demand, we present a state-of-the-art gypsum board production line designed for an annual output of 10 million square meters. This fully integrated system combines precision engineering, innovative automation, and environmentally conscious design to deliver consistent product quality, operational efficiency, and long-term reliability.

Comprehensive Process Overview

The production line is structured into clearly defined sections, each optimized for performance and ease of operation.

Facing Paper Handling

The process starts with four paper racks for both upper and lower facing papers, configured in a “one-in-use, one-standby” mode for rapid roll changes. Pneumatic clamping butt splicers ensure secure joining of paper ends during roll replacement, preventing breaks. Automatic edge guiding systems maintain precise alignment, while an automatic scoring machine imprints fold lines on the back paper, guaranteeing sharp, square corners on finished boards. Synchronized paper feeders reduce tension on the backing paper, minimizing breakage, and storage units allow roll changes without interrupting production speed.

Gypsum Powder Conveying

Gypsum powder is transferred from self-manufactured silos via five screw conveyors and a calibrated belt scale feeder, ensuring accurate and uniform delivery into the mixer. A filtering screen removes foreign particles, protecting the mixing system. The structural platform supporting this section is built from heavy-duty #14 I-beams, #10 channel steel, #5 angle iron, and 2.5 mm checkered plate, ensuring durability under continuous operation.

Starch Adhesive Preparation

Starch is stored in a platform silo with integrated weighing and water metering systems for precise concentration control. Two mixing tanks operate alternately—one for preparation, one for application—under automated management. A single-screw pump delivers adhesive with stable flow, minimal pressure fluctuation, and strong self-priming capability, ensuring even distribution throughout the process.

Foaming Liquid System

Foaming liquid is mixed in a dual-tank configuration, with upper tank for preparation and lower tank for application. Transfer is handled by a screw pump, while a homogenizing emulsifying pump refines bubble consistency. A dedicated foaming station maintains stable air pressure, producing fine, uniform foam essential for lightweight board cores.

Forming Section

At the heart of the line is a proprietary vertical stainless-steel mixer featuring special alloy-welded internals for thorough blending, low-density foaming, anti-clogging, and wear resistance. A variable-frequency vibrating table spreads slurry evenly while minimizing friction with the facing paper, reducing breakage. An improved pneumatic lift-type or synchronous forming machine, developed with patented modifications, synchronizes with the conveyor belt to reduce drag and simplify operation.

Conveying and Cutting

The board travels on a 1.35 m wide, 12 mm thick gypsum board-specific belt, with frequency-controlled drive rollers sized for optimal grip and longevity. A servo-driven synchronous cutter, governed by encoder feedback, trims boards cleanly with long-lasting blades. Post-cut acceleration ensures smooth transfer to the transfer station, with a unidirectional clutch allowing defective boards to be diverted without disrupting workflow.

Transfer and Stacking Operations

A six-position turnover unit, servo-controlled, orients boards face-up to protect surface quality. Lift mechanisms, powered by cylinders, raise and lower boards with stability. Wide flat-belt transfers move boards precisely between stations. PLC-controlled lifts distribute boards among drying tiers, while infeed belts match the speed of the dryer’s fast advance to prevent surface abrasion.

Drying System

The dryer features a floating frame design to counteract thermal expansion, reducing height and width to improve heat retention. Spring-adjusted chain tensioning ensures smooth power transmission, while carbon steel rollers with UCP205 bearings and multi-wedge belts deliver quiet, reliable operation. One side of the chamber uses fixed insulation panels, the other sliding doors, with drive chains located outside the hot zone to extend service life. Narrow layer spacing (200–250 mm) maximizes heat efficiency, and radiation combined with circulating hot air ensures even temperature distribution. Heat sources can be tailored; a chain-grate coal furnace is available. Exhaust humidity is controlled and recycled, significantly reducing energy consumption.

Final Processing and Packaging

After rapid exit and tilting conveyance, boards are flipped, aligned, and cut to size (2.4–3.0 m, or custom lengths). Scraps are ground and reused, with pulse-jet bag filters keeping dust emissions minimal. Accelerators move boards to the separation station, then to end-sealing and palletizing units. Two automatic palletizers and a reject-handling palletizer complete the process, while additional dust collectors at key points ensure a clean working environment.

Conclusion

This gypsum board production line represents the pinnacle of process integration, marrying precision mechanics with intelligent automation and environmental responsibility. Every section—from paper handling to final packaging—is engineered for reliability, ease of maintenance, and superior output quality. Designed for an annual capacity of 10 million square meters, it offers manufacturers the technological edge needed to excel in competitive markets while meeting global standards for safety and sustainability.