Orthomax RFMB-15

Fusion of pin wheel and roller straightening

Removing all types of distortions

The fusion of pin wheel and roller straightening technology perfectly combines the advantages of both technologies and provides amazing straightening results. It provides reliable, quick distortion correction also for asymmetric web distortion.

An infinitely variable unclipping roller minimises residual bow and edge distortions. The intelligent drive station with special voltage control for smallest product distortion activates or deactivates automatically (e.g. in case of blockages). A bypass function is available at the push of a button for products that cannot be straightened with the pin wheel.

Pin wheels & rollers

Asymmetrical distortions (wavy, S-shaped, etc.) in textiles have always represented a huge challenge in the textile industry. Distortion always means that the rectangular structure of warp and weft threads is distorted resembling something like a parallelogram.

To restore the warp and weft threads to their original state, a defined lateral tension is generated using freewheeling, inclined pin wheels. This cross-tension stretches the warp threads. The distortion, no matter whether wavy or S-shaped, will be corrected.

The fusion of pin-wheel and rollers straightening system perfectly combines the advantages of both technologies and provides amazing straightening results. On wet fabric teflon-coated feed rollers are used.

Special features

  • Unclipping roller with infinitely variable adjustment: Minimises residual bow and edge distortions.
  • Intelligent drive station with special tension control for smallest product tension activates or deactivates automatically (e.g. in case of blockages).
  • A bypass function is available at the push of a button for products that cannot be straightened with the pin wheel.
  • Intelligent wheel following: Product loss is nearly prevented entirely. The control immediately compensates product offset, poor seams, fringes and dents on the edges.
  • Width jump function: New wider products do not need to be pulled in separately when changing products. Sew the new product to the old one, pull in, done! No more downtime!
  • Break function: Reduces the lateral tension to a preselected level when the line is stopped, e.g. during breaks or when working on other machines in the line. Preserves the product!

Product highlights

  • High lateral tension possible
  • Adjustable unclipping device
  • Bypass function
  • Intelligent drive

Customer benefits

  • The pin wheel straightens even without detection
  • Classical straightener for elastic fabrics
  • Wavy and S-shaped distortions can be eliminated
  • Most versatile weft straightener available
  • Covers a wide portfolio- serves your every need

Area of application

  • When confronted with asymmetrical distortions (wavy, S-shaped…)
  • For non-elastic fabric that cannot be detected
  • Provides a solution for every potential distortion challenge

Technical data

  • Nominal width: 1200 – 3200 mm (larger widths upon request)
  • Max. product speed: 80 m/min
  • Mains connection: 400 V / PE; 3 AC; 50/60 Hz
  • Max. power consumption: 6.3 kVA
  • Ambient temperature: 5 - 45 °C

Orthomax RFMB-12, Zegna, Italy

Installations at Lanficio Ermenegildo Zegna & fili SPA, Italy

The Zegna Wool Mill founded in 1910, has been the backbone of the company’s success and is renowned internationally for the world’s finest textiles. Four generations of the Zegna family have led the success in textiles, through innovation, carefully balancing science with nature and craftsmanship with technology.

All pictures by courtesy of Opens external link in new windowLanficio Ermenegildo Zegna & fili SPA

Orthomax RFMB-12 at decatizer
The fusion of pin wheel and roller straightener perfectly combines both technologies and provides amazing straightening results (Picture by courtesy of Lanficio Ermenegildo Zegna & fili SPA).
Orthomax RFMB-12 at decatizer
Unclipping roller with infinitely variable adjustment: Minimises residual bow and edge distortions (Picture by courtesy of Lanficio Ermenegildo Zegna & fili SPA).
Orthomax RFMB-12 at decatizing
Fusion of pin wheel and roller straightening system: removes all types of distortions (Picture by courtesy of Lanficio Ermenegildo Zegna & fili SPA).
Orthomax RFMB-12 at a kier decatizer
The pin wheel & roller weft straightener in use at wool finishing (Picture by courtesy of Lanficio Ermenegildo Zegna & fili SPA).
Weft straightening with Orthomax RFMB-12 at wool decatizing
The fusion of pin wheel and roller straightener perfectly combines both technologies and provides amazing straightening results (Picture by courtesy of Lanficio Ermenegildo Zegna & fili SPA).
Orthomax RFMB-12 at a stenter frame
Weft straightening at the feed-end of a stenter in textile finishing (Picture by courtesy of Lanficio Ermenegildo Zegna & fili SPA).
Pin wheel & roller straightener Orthomax RFMB-12 at a stenter
Prior to the stenter frame the Orthomax removes distortions in the fabric (Picture by courtesy of Lanficio Ermenegildo Zegna & fili SPA).

Orthomax RFMB-12, Creazioni Digitali, Italy

Installations at Creazioni Digitali, Italy

Creazioni Digitali is a top-notch digital printer established in 2006 who can print fine art on materials even over 3 meters widths and rigid materials.

All pictures by courtesy of Opens external link in new windowCreazioni Digitali SRL

Orthomax RFMB-12 at digital printing
The pin wheel & roller straightener ensures that the printed fabric runs into the stenter frame without any distortions
Orthomax RFMB-12 helps at digital sublimation printing
The pin wheel corrects the best part of the distortions in a natural way. The classic roller straightern in the lower part of the machine does the rest.
Touchscreen operation hub at the Orthomax weft straightener
The user can always easily monitor and control the weft straightener via two touchscreens. The big one is for the scanner of the roller straightener, the small one controls the pin wheel actions.
Orthomax RFMB-12: Straightly printed fabric thanks to Mahlo
The fusion of pin wheel and roller straightener perfectly combines both technologies and provides amazing straightening results.
Orthomax RFMB-12: Details of the pin wheel straightener
A glance at the pin wheels: Inclined positioning of the wheels is carried out pneumatically, which ensures a constant straightening effect. At the bottom of the picture you see the variable unclipping roller. It minimises residual bow and edge distortions.
Orthomax RFMB-12 at digital printing
Intelligent wheel following: Product loss is nearly prevented entirely. The control immediately compensates product offset, poor seams, fringes and dents on the edges.

Orthomax RFMB-12, Orthopac FMC, Optipac VMC, Stamperia Olonia, Italy

Installations at Stamperia Olonia, Italy

The Italian textile printing company Stamperia Olonia was founded in 1969. Since the 90s it has been a fixture in the international decorative and home textiles sector.
The print shop with an annual output of approximately 30 million m² is located halfway between Milan and Lake Maggiore. The printing area with rotary, flat and digital printing machines up to a width of 320 cm includes a large finishing area, in which the Mahlo devices are also used.

All pictures by courtesy of Opens external link in new windowStamperia Olonia SRL

Mahlo weft straigtener / process control system at textile printing
Mahlo combination system on a stenter frame in the finishing area. At the inlet, the weft straightener Orthomax RFMB corrects distortion with needle wheel and / or straightening rollers.
In the stenter, the Optipac VMC process control with exhaust air moisture probes ensures the best heat output of the tenter frame and measures the product width at the end. An Orthopac FMC EP scanning bridge at the outlet documents any residual distortion of the goods.
Pin wheels of an Orthomax RFMB
View from behind into the needle wheels of the Orthomax RFMB. Below the pin wheels the patented, adjustable unclipping roller. It minimizes residual bow and edge distortion when de-needling the fabric.
Detail of the pin wheels in an weft straightener Orthomax RFMB
Detail view of the pin wheels of the Orthomax RFMB. Due to the intelligent wheel following a loss of goods is almost impossible. The control immediately compensates product offset, poor seams, fringes and dents on the edges.
Weft straightener Orthomax RFMB at the inlet of a stenter
For constant straightening effect, the wheels are tilted pneumatically. A counterforce spring causes a uniform, symmetrical wheel alignment. Elaborate, high- maintenance lever constructions are not necessary here.
View into the interior of an Orthomax RFMB
A scroll roller in front of the needle wheels removes wrinkles, edge sensors ensure continuous wheel tracking. The straightening rollers in the lower machine part correct residual distortions. For wet goods teflonized inlet rollers are used.
Exhaust air moisture control
The Optipac VMC process control uses the Ecomat AML exhaust air moisture module (ZS-12 probe) to adapt the heating energy to the actual demand by monitoring the vapour content of the exhaust air and controlling this factor through the fan speed or the exhaust air vent control.
Measuring fabric width
The Wilot WMR module of the Optipac process control measures and logs the product width at the outlet of the system.
Mahlo weft straightening and process control combination at a stenter frame
Mahlo combination plant with Orthomax RFMB (inlet), process control Optipac VMC (exhaust air humidity, fabric width) and Orthopac FMC (outlet) on a stenter frame in the finishing area.
Width measurement Wilot WMR
Immediately before winding onto the batchin roller, the Wilot WMR, a module of the Optipac VMC process control, records and logs the product width.
Measuring fabric width
The product width measurement Wilot WMR: IR LEDs in reflex mode determine the product width.
Fabric distortion detection with Orthopac FMC
At the outlet of a stenter frame, the Orthopac FMC distortion detection scans and logs the residual distortion. Here with motorized scanner adjustment and edge sensors, the scanners can be automatically adapted to the width of the product. Here you can see the headlights, the scanners hide behind the fabric.
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Key-Exhibition for Garment & Textile Machinery
20 - 26 Jun 2019
Barcelona, Spain
Visit us at booth no. H2-C203!

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Mahlo GmbH + Co. KG • Donaustraße 12 • 93342 Saal /Donau
Tel.: +49-9441-601-0 • info@mahlo.com