Founded in 1969, Stamperia Olonia is now an integral part of the Liberty Group and has been a leader in printing on natural fabrics for home textiles and clothing fabrics from the very beginning. New technologies, high quality, innovation and certifications are Olonia's ingredients for further growth.
This is why the printing specialist has also equipped several stenter frames and printing lines with systems from Mahlo. This helps to produce a high and continuously consistent quality. At the same time, Olonia saves costs and resources and can document and improve its processes.
Images courtesy of Stamperia Olonia, Italy
On an production line, an Orthopac RVMC-15 controls the distortions at the infeed. (Olonia / Italy)
An MMA-15 drive station above the straightening machine provides support when feeding into the system. (Olonia / Italy)
Here is the scanning unit of the Orthopac RVMC-15 in detail. The scanning heads are automatically moved to the fabric width. (Olonia / Italy)
Flat bed printing & Rotary printing
Stamperia Pezzoli offers printing and finishing services for textiles for more than 35 years, maintaining the highest quality standards in every step of the manufacturing process and ensuring a highly competitive service in terms of technology and styling. Stamperia Pezzoli's finished textiles are used worldwide mainly for furniture and linen in households, hotels and hospitals. They are also used in the shipping industry and in the outdoor sector.
Pezzoli relies on Mahlo technology for straight-thread fabrics as well as process control and quality control during the finishing processes on the stenter frame. In the installation shown, a combination of Orthopac weft straighteners at the inlet and outlet of the stenter frame ensures perfect straightening results. For the best printing results, the Patcontrol system also monitors the pattern repeat and pattern distortion. The parameters in the stenter frame - dwell time, exhaust air moisture, residual moisture, fabric width - are monitored by the Optipac process control system.
Images courtesy of Stamperia Pezzoli, Italy
Stenter frame with Orthopac weft straightener at the inlet and outlet. A Patcontrol PCS also scans pattern distortions. The Optipac process control controls the dwell time, exhaust air and residual moisture. (Pezzoli / Italy)
A Patcontrol PCS scans for pattern distortions at the inlet and sends control commands to the weft straightener. (Pezzoli / Italy)
At the inlet, the Orthopac RVMC automatic weft straightener supplies the stenter frame with straight fabric. (Pezzoli / Italy)
The Ortopac RVMC uses skew rollers and bow rollers to correct skew and bow distortions in the fabric. (Pezzoli / Italy)
Exhaust air humidity sensors in the Optipac VMC measure and control the exhaust air humidity in the stenter frame. Excess moisture escapes, leaving the energy required for drying or fixing. (Pezzoli / Italy)
Hidden in the stenter frame, Optipac VMC sensors measure the surface temperature of the fabric and control the dwell time / fixing time. (Pezzoli / Italy)
Sensors at the stenter frame outlet measure the residual moisture of the fabric and adjust the system if the value is too high or too low. (Pezzoli / Italy)
The Wilot WMR width measuring system from Mahlo records the fabric width as it passes through the stenter frame. (Pezzoli / Italy)
An Orthopac FMC logs the residual distortion values at the outlet of the stenter frame and sends control pulses to the straightening machine in the infeed if necessary.
The pattern distortion at the stenter frame outlet is also logged with the Patcontrol PCS and, if necessary, control pulses are sent to the straightening machine in the infeed. (Pezzoli / Italy)
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Optipac VMC -15
Modular process control system
The versatile process control for textile drying and finishing convinces with simple and ergonomic software as well as a multitude of sensors.
The heart of the process control system is the basic unit. It consists of the basic control cabinet with electronic control components and the display and operating station with touch screen.
The exhaust air humidity sensor measures the proportions of oxygen, water vapour and harmful gases in the stenter frame.
Famacont determines and controls weft density, stitch row density and basis weight on running textile webs.
The beta sensor determines basis weight and thickness by the attenuation of radioactive rays through the substrate located in the measuring gap.
The pyrometer measures temperatures from 0 - 250°C
The residual moisture content is determined by the electrical conductivity of the fabric.
IR LEDs in reflex mode determine the fabric width
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Optimizes finishing
The Orthopac VMC is a modular process control system for textile refinement. It optimises drying or fixing processes as well as the processes all about the stenter. The system measures, logs and controls critical process parameters over the entire working width like temperature, dwell time, residual moisture, exhaust air moisture, thread density, basis weight and more. This increases quality while saving resources and energy.
The modular design of the system allows its flexible adaptation to all applications. Both, standard requirements and highly customized demands are thus met.
The system can also be integrated into an Orthopac straightening system. It thereby combines the functionality of a weft straightener with that of a process control system in one compact device.
Product highlights
- Modular system architecture
- Operator-friendly
- Informative process visualisation
- Online monitoring and control of all relevant parameters
- Easy to retrofit
Customer benefits
- Increased productivity
- Optimised production security
- Increased process reproducibility
- Documentation and comparability of quality
- Considerable energy savings
- Short amortisation times
Textile manufacturers and finishers fight with rising production and energy costs, declining profit margins, shorter production times as well as higher requirements on quality and flexibility. Cost-efficient and quality-focused textile outfitting thus becomes increasingly important. Sustained production and the trend to higher-quality, technically sophisticated textiles also play a major role.
The efficiency of the production plants can be drastically increased through suitable measuring and control technology from Mahlo. This means, at the same time, increased productivity with usually improved reproducible quality, optimised raw materials usage and work effort accompanied by clearly improved plant utilisation.
Regardless of the challenges of the textile industry – Mahlo has the right solutions ready. The broad range of applications for the textile industry by Mahlo is based on experience reaching back to the year 1945.
Improved product quality, saving of resources and energy as well as optimisation of the production processes in a single step: with the process control system Optipac VMC from Mahlo.
- At the stenter frame
- In textile converting
- In textile finishing
- Stand-alone device
- Integrated in weft straightener familiy Orthopac
Sensors
The right tool for every application
Various intelligent sensors can be connected to the basic unit via a bus connection. Various process parameters can be measured, visualized, controlled and documented by means of special software packages, e.g. mLog
Control of dwell time and fixing time
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Control of thread density / course density / basis weight
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Control of web temperature
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