The PA.3000 elliptical cylinder pre-needler
With more than 70% extra surface-impact needling capacity than any other existing technology, the PA.3000 cylinder has been specifically designed for markets requiring products with a high-quality visual aspect in addition to the draft-free advantage during the pre-needling stage. As it operates without internal draft, it is the ideal solution for processing fiber mats thanks to new capabilities to freeze the fabric evenness.
The new elliptical cylinder pre-needler is perfect for processing lightweight products, in particular for 50-80 gsm fabrics, at high speed and with an extended width of up to 6.75 m. Depending on its width, the PA.3000 will run at up to 18 m/min, or up to 40 m/min when the stroke is unclutched, and with a needling density of eight needles to a row. This is a much higher capacity and speed than its forerunner, the PA.2000, which is limited to a production speed of 8 m/min at a width of 6.0 m.
“Cylinder pre-needlers are very popular with producers of nonwovens. In fact, some of our customers would not consider a line without them. They have many advantages and can be used in all types of applications, and what producers really like is the simple, trouble-free operation they bring. The PA.3000 is an evolution of the same principles, but faster and with a higher capacity,” says Jean-Philippe Dumon.
In addition, the PA.3000 has a sturdier beam, made from carbon fiber to accommodate the higher stroke speed and width with minimum bending tolerance.
The PA.3000 is designed to allow more needles per linear meter by reducing the distance between the needles as compared to previous ANDRITZ cylinder pre-needlers. This means that needle impacts on the fabric surface are increased by more than 70%. “Ultimately, our customers are looking for greater surface evenness in lightweight fabrics. This can only be achieved by stabilizing the fiber mat more effectively prior to the needling process proper. This innovation in surface evenness is achieved simultaneously with good throughput performance,” according to Dumon.
The loose fiber mat is compressed and fed into the needling zone without draft prior to the draft-free pre-needling process. As a result, the web layers are stitched together with optimum cohesion to preserve the evenness of the web surface, minimizing the risk of creating the clouds produced by other pre-needler designs.
Although the new cylinder pre-needler PA.3000 requires little maintenance, the equipment has been designed to offer easy access for operators and includes a pneumatic clamping system. All this combines to make the new cylinder pre-needler PA.3000 very easy to operate.
Specifications of the PA.3000
- Working width: from 3.00 m up to 6.75 m
- Advance speed: up to 18m/min or 40 m/min (stroke unclutched)
- Upper needle beam (additional downstroke needle beam as an option)
- Needle pattern: 1,280 needles per meter (per needle board)