Core Cutting Machines
Overview
The dryer section is designed to ensure uniform moisture removal and stable sheet runnability. RC Paper Machines incorporate efficient heat transfer and reliable condensate removal systems. This results in consistent drying across the paper width. The robust design supports continuous operation with reduced energy consumption.
Dryer sections in paper machines have MS/CI and Steel Dryers and use heated cylinders to evaporate remaining water from the pressed web, achieving 90-95% dryness via steam-heated drying and fabric support.
Scope of Delivery
- Basic Dryer Section - Includes CI/Chrome/Alloy dryer cylinders ( 1.5-1.8 m dia., up to 6m width), steam joints/siphons, dryer felts/screens, frame with tensioners, drive gears/motors, and lubrication systems.
- Large Kraft Dryers - Covers multi-tier configurations (40-60 cylinders), with uni-run, pocket ventilation hoods, closed hoods for energy recovery, large Yankee dryer (6m dia.), doctor blades, auto-tensioning fabrics, and heat recovery condensers.
- Tissue Dryers - Features Yankee dryer with hood system, creping doctors/blades, through-air drying (TAD) units if specified, MG cylinders, fabric guide rolls, steam control valves, and safety interlocks.
It also includes silent drive system for Dryers.
Key Advantages
- High evaporation rates (up to 1.5 kg H2O/m²·s) reduce sheet moisture to <6%, enabling high-speed production (500-800 m/min for kraft).
- Yankee dryer in tissue boosts bulk/softness via creping, with hoods recovering 90% heat for energy savings of 20-30%.
- Multi-tier setups ensure uniform drying, minimising web breaks and improving strength/flatness for packaging grades.
- Closed hoods and pocket ventilation enhance efficiency, cutting steam use by 15-25% while handling widths up to 6m.
- Versatile for grades: air-impingement for tissue absorbency, large cylinders for dense kraft.
