Double Cylinder Carding Machine II
Working Principle
- The front vibrating cotton box delivers a uniform cotton layer, which then enters the feeding roller + cutting roller for initial loosening
- Chest cylinder (the first cylinder): Pre-combination, disperses large cotton clumps, initially mixes different fibers (PET + low-melting-point fibers / jute / glass fiber), and removes some cotton knots
- The transferred roller transports it to the main cylinder (the second cylinder), where multiple working rollers + stripping rollers perform fine combing, allowing the fibers to be fully single-fiberized
- The drum condenses the cotton web, and the disordered roller changes the fiber orientation, reducing the strength difference in the longitudinal and transverse directions of the cotton web
- The cotton stripping roller continuously outputs a smooth cotton web, which is then sent to the cross-laying machine for layering
Core logic: Two-level sorting = Pre-sorting + Fine-sorting, with an additional combing step compared to a single cylinder, resulting in better uniformity of the cotton web and fewer cotton knots, making it suitable for high-weight, thick non-woven products.
Main Structural Components
- Feed unit: Cotton feed roller, cutting roller, metal detector (to prevent blockage of cotton / protection against metal foreign objects and machine shutdown)
- Chest cylinder (small cylinder, φ850mm) + matching working rollers, stripping rollers
- Transfer roller, mid-stitcher
- Main cylinder (large cylinder, φ1230/1500mm), multiple sets of working rollers
- Upper and lower stitchers (mostly double stitchers), disorder rollers, cotton stripping roller
- Independent variable frequency drive, negative pressure dust collection system, cast iron frame, transparent safety cover
Key Technical Parameters
- Effective width: 1800 / 2000 / 2400 / 2500mm (customizable)
- Cylinder specifications: Chest cylinder φ850mm; Main cylinder φ1230/1500mm
- Applicable fibers: PET, low-melting-point fibers, jute, PP, glass fiber, etc.; Fiber length 25–100mm
- Production capacity: 250~800kg/h (depends on raw materials, weight, width)
- Web exit speed: Maximum 30–40m/min
- Overall machine power: Approximately 45~90kW, each roller is independently variable frequency speed regulation
- Cotton web CV uniformity: High-quality models can achieve ≤2.5%
Dual-Cylinder vs Single-Cylinder Carding Machine Comparison
| Comparison Item |
Double-Cylinder Carding Machine |
Single-Cylinder Carding Machine |
| Combing Ability |
Two-stage combing, few cotton knots, sufficient fiber loosening |
Only one-stage combing, thick materials are prone to cotton knots |
| Cotton Net Uniformity |
High, more balanced longitudinal and transverse strength |
Average, high-weight products are prone to uneven thickness |
| Production Capacity |
Higher, suitable for high-production lines above 250kg/h |
Suitable for small to medium production capacity, thin felt |
| Applicable Products |
Polyester sound-absorbing board, automotive wheel cover felt, jute felt, thick carpet base fabric, glass fiber felt |
Thin needle-punched felt, filter cloth, ordinary loose cotton |
| Cost |
Higher equipment investment, larger floor space, slightly higher energy consumption |
Lower price, smaller floor space, simple maintenance |
Selection Rule: For thick plates, high weight, multi-component blended fibers, and stable product density requirements → prioritize double-cylinder machines; for thin felts with limited budget, a single-cylinder machine is sufficient. For polyester sound-absorbing board production lines with high requirements for plate density consistency and NRC sound absorption index, double-cylinder machines are recommended.
Compatible Production Lines
- Polyester fiber sound-absorbing board production line (Recommended to select double-cylinder for high configuration, ensuring uniform plate density and reducing warping)
- Needle-punched fabric for car wheel covers (Multi-component PET + flame-retardant fibers blended, double-cylinder blended fiber effect is good)
- Jute felt production line (Jute fibers are coarse and hard, double-cylinder separation effect is stronger, reducing unopened jute balls)
- Civilian carpet base fabric, sofa fabric cool fabric production line
- White glass fiber combing and laying wire (The six-cylinder version mentioned earlier belongs to the high configuration version of multiple-cylinders)