Garantía de calidad de Mahlo: al servicio de la salud: control del peso básico y del grosor del material

DONAU, Alemania – 6 de octubre de 2020 – Los fabricantes de productos médicos se encuentran actualmente bajo presión para entregar sus productos lo más rápido posible, pero aún con alta calidad. El peso y el grosor influyen en gran medida en la funcionalidad de los productos no tejidos, como máscaras o batas protectoras. Con los sistemas de control de procesos de Mahlo GmbH + Co KG, este acto de equilibrio no solo es más fácil de dominar, sino que también se reducen aún más los costes de producción.

Gracias a décadas de experiencia y una amplia gama de tecnología de medición y control, los fabricantes de máquinas bávaros pueden ayudar a los fabricantes a monitorear y controlar parámetros importantes durante el proceso de producción. Hay diferentes sensores disponibles según la aplicación.

Matthias Wulbeck, experto en medición de calidad en Mahlo, explica las diferencias: “Nuestro sensor Gravimat DFI es parte del sistema modular Qualiscan QMS y mide el peso base con la ayuda de radiación isotópica”. La medición se basa en la atenuación de la radiación radiactiva por el sustrato en el espacio de medición. Esta atenuación de la intensidad es una indicación del peso base del producto. Si la densidad es uniforme, la medición del peso base también se puede utilizar para sacar conclusiones directas sobre el grosor de la tela no tejida. Para hacer justicia a las diferentes propiedades de los materiales, Mahlo trabaja con diferentes variantes de isótopos. “Para productos con un peso entre 10 y 1400 g / m² usamos Krypton-85, para 100 a 6000 g / m² usamos Estroncio-90”.

Sin inexactitudes de medición debido al aleteo de la tela

El transmisor del sensor de desplazamiento irradia sobre la red en funcionamiento. Debido a su masa, la radiación llega al receptor de forma amortiguada. Mahlo utiliza un receptor multicanal donde la radiación de medición entrante se distribuye a diferentes áreas de la superficie del producto. De esta forma se obtienen valores precisos, independientemente de la posición actual de la web. Este método también resuelve uno de los principales problemas de los fabricantes de productos en forma de banda como el vellón higiénico: las imprecisiones de medición debidas al aleteo de la tela.

Medición con rayos X

Como alternativa a la técnica de medición con isótopos, Mahlo utiliza un método de medición con rayos X. “El sensor Gravimat FMX-T es ideal para productos que constan de un solo componente y determina el peso base y el grosor con la misma fiabilidad que los modelos con radiación beta”, dice Wulbeck. Mide películas finas, no tejidos y otros tejidos con alta resolución, precisión de medición y ausencia de defectos. La variante de sensor <5 kV está completamente exenta de los requisitos de seguridad radiológica en Europa y muchos otros países. “Una ventaja para muchos fabricantes”.

El cabezal de medición Gravimat FMX consta de un tubo de rayos X compacto y su fuente de alimentación de alto voltaje, así como detectores de rayos X modernos y especiales con la electrónica para la adquisición de datos. Gracias al diseño optimizado del sensor, es completamente insensible al impacto ambiental como la temperatura y la humedad relativa.

Otra alternativa muy interesante es la medición de la absorción de infrarrojos, que mide los componentes individuales de la fibra y, por lo tanto, puede determinar no solo el peso base sino también el contenido de fibra. Esta versión también está exenta de los requisitos de seguridad, ya que solo se utiliza luz infrarroja para la medición.

Independientemente del método que se utilice para adaptarse a la aplicación, ambos tienen una cosa en común: el control de peso básico automático reduce significativamente la distribución del peso base y, por lo tanto, garantiza un producto final más consistente. Los puntos de ajuste definidos adecuados con rangos de tolerancia mínimos ahorran costos de material y energía en un grado significativo, además de salvaguardar la calidad del producto. Además, se elimina un margen de seguridad, lo que de otra manera significa pérdida de bienes y tiempo.

Publicado el 6 de octubre de 2020

Fuente: Mahlo GmbH + Co. KG

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Measuring spunlaced nonwovens – MAHLO

Mahlo infrared technology for the most accurate results

Production of protective masks from non-woven fabricThe protective mask production is running at full speed (InkheartX / stock.adobe.com).

Non-nuclear measurement: Mouth and nose protection, disposable protective gowns and gloves are currently among the most important articles in the corona crisis. Above all, medical personnel and first-aiders such as the fire brigade and police are dependent on them – and must be able to rely 100 percent on their functionality. With its systems for process control and quality measurement, Mahlo GmbH + Co. KG has been supporting manufacturers in the reliable production of high-quality nonwoven articles for decades.

In a nonwovens line, the moisture content after spunlacing and the basis weight and residual moisture profile after drying are important parameters for ensuring quality and optimizing the production process. The production process has to run in such a way that the product is guaranteed to have the desired functions, but still be as cost-effective as possible for the manufacturer. The key to success is automated measurement and control of these essential parameters.

For example, if the weight does not correspond to the specifications, this can lead to errors in functionality, but also to unnecessarily high raw material consumption. A fleece that is too light for medical masks may no longer be able to meet all safety standards and thus become a health hazard. Nonwoven webs that are used as supports for operating tables are also typical spunlaced nonwovens. If this type of product is too heavy, it does not affect function and safety. However, more resources are wasted than actually needed. The result: rising costs and a higher burden on the environment. The same applies to the residual moisture in the product. If the product is too moist, there is a risk of mold growth, and if the fleece is too dry, the energy consumption in the line is too high.

The advantages of quality control are obvious: If critical parameters are systematically controlled and regulated, this is reflected in higher fabric quality. This means less rejects and less consumption of raw materials. This not only saves manufacturers time, but also money.

Basis weight and moisture analysis with non-nuclear measurement

A conventional method for determining both values is to measure the moisture with a simple infrared or microwave sensor in combination with a beta or X-ray sensor for the basis weight. Because of the radiation and the safety requirements associated with it, the user would like to avoid nuclear measurement if possible. This is easily possible with Mahlo’s sensor technology. For spunlace products, mainly fibres such as cotton, PE, PET or rayon are used. These have the pleasant characteristic that they absorb light in the near infrared range. Water and the other materials have different spectral ranges and can thus be distinguished. By measuring the attenuated radiation, the moisture content and the weight per unit area of different materials can be determined.

Therefore, only one Mahlo infrared sensor, calibrated for the respective fibre types, is required to determine and evaluate the values. The measuring process is contactless, non-destructive and without unwanted influence on the product properties. This method is particularly useful when a manageable quantity of different goods is produced. The calibration is adapted to the products and stored in the article memory.

 

The necessary measurement and control tasks are performed by the modular quality control system Qualiscan QMS »  from Mahlo. The cross direction profile of the measurement is displayed over the entire fabric width by means of traversing sensors. Depending on the application, the infrared sensors Infralot IMF or Infrascope NIR are used.

Mahlo has already successfully implemented many such applications and offers the user a perfect tool with high measuring accuracy and easy handling. Our technical service ensures that the desired measures are implemented 100%. Not only can products with “zero defects” be manufactured continuously, but quality, efficiency and profit can also be increased in the long term.

Contact us

With Matthias Wulbeck, Area Sales Manager and Product Manager QCS, you have an experienced and committed contact person at your side.

Matthias Wulbeck
Matthias Wulbeck

Area Sales Manager Western Germany, Europe, Russia | Sales Manager / Product Manager QCS

 +49 9441 601 123
 +49 9441 601 102
 matthias.wulbeck@mahlo.com

More detailed information on the products, brochures and topic-related technical articles can be found in the download area of our website. There you can also download this article as PDF.

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Measuring spunlaced nonwovens – MAHLO

Mahlo infrared technology for the most accurate results                     

Non-nuclear measurement: Mouth and nose protection, disposable protective gowns and gloves are currently among the most important articles in the corona crisis. Above all, medical personnel and first-aiders such as the fire brigade and police are dependent on them – and must be able to rely 100 percent on their functionality. With its systems for process control and quality measurement, Mahlo GmbH + Co. KG has been supporting manufacturers in the reliable production of high-quality nonwoven articles for decades.

Production of protective masks from non-woven fabric

The protective mask production is running at full speed (InkheartX / stock.adobe.com).

 

 

 

In a nonwovens line, the moisture content after spunlacing and the basis weight and residual moisture profile after drying are important parameters for ensuring quality and optimizing the production process. The production process has to run in such a way that the product is guaranteed to have the desired functions, but still be as cost-effective as possible for the manufacturer. The key to success is automated measurement and control of these essential parameters.

For example, if the weight does not correspond to the specifications, this can lead to errors in functionality, but also to unnecessarily high raw material consumption. A fleece that is too light for medical masks may no longer be able to meet all safety standards and thus become a health hazard. Nonwoven webs that are used as supports for operating tables are also typical spunlaced nonwovens. If this type of product is too heavy, it does not affect function and safety. However, more resources are wasted than actually needed. The result: rising costs and a higher burden on the environment. The same applies to the residual moisture in the product. If the product is too moist, there is a risk of mold growth, and if the fleece is too dry, the energy consumption in the line is too high.

Face mask made of nonwoven fabric

The advantages of quality control are obvious: If critical parameters are systematically controlled and regulated, this is reflected in higher fabric quality. This means less rejects and less consumption of raw materials. This not only saves manufacturers time, but also money.

Nonwovens are in great demand during the Corona crisis. Among other things, protective masks are made from it.

Basis weight and moisture analysis with non-nuclear measurement

 

A conventional method for determining both values is to measure the moisture with a simple infrared or microwave sensor in combination with a beta or X-ray sensor for the basis weight. Because of the radiation and the safety requirements associated with it, the user would like to avoid nuclear measurement if possible. This is easily possible with Mahlo’s sensor technology. For spunlace products, mainly fibres such as cotton, PE, PET or rayon are used. These have the pleasant characteristic that they absorb light in the near infrared range. Water and the other materials have different spectral ranges and can thus be distinguished. By measuring the attenuated radiation, the moisture content and the weight per unit area of different materials can be determined.

Therefore, only one Mahlo infrared sensor, calibrated for the respective fibre types, is required to determine and evaluate the values. The measuring process is contactless, non-destructive and without unwanted influence on the product properties. This method is particularly useful when a manageable quantity of different goods is produced. The calibration is adapted to the products and stored in the article memory.

 

The necessary measurement and control tasks are performed by the modular quality control system Qualiscan QMS »  from Mahlo. The cross direction profile of the measurement is displayed over the entire fabric width by means of traversing sensors. Depending on the application, the infrared sensors Infralot IMF or Infrascope NIR are used.

Mahlo has already successfully implemented many such applications and offers the user a perfect tool with high measuring accuracy and easy handling. Our technical service ensures that the desired measures are implemented 100%. Not only can products with “zero defects” be manufactured continuously, but quality, efficiency and profit can also be increased in the long term.

Contact us

With Matthias Wulbeck, Area Sales Manager and Product Manager QCS, you have an experienced and committed contact person at your side.

Matthias Wulbeck
Matthias Wulbeck

Area Sales Manager Western Germany, Europe, Russia | Sales Manager / Product Manager QCS

 +49 9441 601 123
 +49 9441 601 102
 Matthias.wulbeck@mahlo.com

Mahlo GmbH + Co KG with new advisory board member

Entrepreneur Dr. Heike Wenzel completes the board of the mechanical engineering company

Since April 1, 2020 Dr. Heike Wenzel has been a member of the advisory board of Mahlo GmbH + Co KG. With her, the machine builder from Saal could win an experienced partner from the industrial sector. The entrepreneur from Wiesthal succeeds Fritz P. Mayer, who is retiring from his position.

 

Dr. Heike Wenzel acts as managing associate of Wenzel Group GmbH & Co. KG, a leading supplier of measurement technology based in Lower Franconia. The company operates worldwide, but is nevertheless a 100% family-owned business – a great similarity with Mahlo. Dr. Wenzel appreciates the values of this culture and knows about the special responsibility that goes along with it. By combining tradition and innovation, she is leading the company into the future and is working to further expand the market position in the field of measurement technology.

“We are looking forward to working with our new advisory board member”, emphasizes Mahlo-owner Ralph Greenwood-Mahlo. “Dr. Wenzel brings a lot of experience in the field of sensor technology from her own company. The Wenzel Group is also a medium-sized family business.

“As a family business owner, one thinks long-term ..”

Dr. Heike Wenzel is married, mother of two children and is a volunteer at the IHK Aschaffenburg, currently as Vice President. During the last years she has realized her dream of owning her own riding stable and relaxes while riding her horse.

“As a family business owner, one thinks long-term and seeks the exchange of ideas with other entrepreneurs. Therefore, I am happy to be able to bring my values and ideas to Mahlo here. The goal of my actions is always to harmonize the requirements of the customers with the interests of the company and its employees. This has worked excellently at Mahlo so far and I would like to actively contribute to its continuation.

COVID-19 Information for Customers and Partners

Mahlo response to COVID-19 

Mahlos Managing Director Rainer Mestermann in the Home office during COVID-19 crisis

Also CEO Rainer Mestermann retreats back into the Home office during COVID-19 crisis, whenever possible.

Dear Valued Business Partners,

These are unprecedented times, with the global spread and the associated impact of the Coronavirus pandemic (COVID-19). Mahlo deeply cares for the safety, health, and wellbeing of its employees and business partners, while continuing to serve our customers.

The proactive steps we have taken over the past weeks were largely ahead of advises from health organizations and governmental guidance. By being proactive, we are working to limit the risk to our team and partners and take care of our customers who we know rely on our ongoing support.

We want to emphasize that as of today Mahlo is continuing its business in all functional areas and we are committed to providing the best service possible to our customers under these challenging circumstances.

 

To continue operations, we have instituted several policies to reduce the risk of potential transmission.

  1. Remote Work
    All employees who can carry out their work remotely are now operating  from their homes. Our team continues to be available by phone, video messaging, and email. Everybody working from home has full electronic access to all resources required to perform their regular duties.We may be working a little differently these days, but never have been more connected.
  2. Travel Restrictions
    We have suspended business travel until further notice. Exceptions are possible and will be handled restrictively considering the specific situation. During this time, our sales and customer service teams will continue to work remotely to service our customers.
  3. Sales & Customer Service, Order Processing, Project Management and Administration
    Our team members in Germany and all subsidiaries can be reached by their regular phone numbers and emails as usual.
  4. Manufacturing Operations
    At this stage, our plant in Germany is fully operational. We have implemented multiple preventive measures, including social distancing, suspending all non-essential vendor visits and increased cleaning measures to ensure the safety and protection of our associates. Visits by customers to our facility are currently not possible. We will continue to accept customer product samples to be sent to our facilities for test.We want to emphasize that for the time being our supply chain works and there are no shortages of any supplies that cannot be managed. Mahlo’s in-house production depth for many components is a specific advantage in these days. Combined with our multiple source strategy this ensures ongoing operation to the benefit of our global customer base.The only area considered as partly critical is freight forwarding due to routing restrictions in some areas. Please be assured that our experienced team will overcome these potential bottlenecks wherever possible.

 

We want to use this opportunity to praise the support and hard work from everybody at Mahlo and our global network of business partners who continue to be instrumental for the running of our business during these challenging times.

Together we will get past this. This is a time of uncertainty and it will take our combined efforts to put this pandemic behind us. Thank you very much for your understanding and continuing support.

We greatly value our partnership.

MAHLO – Exhibitions & Events

We look forward to meeting you at the following events…

Igatex

Intl. Exhibition for garment and textile machinery

New date!
01 – 04 July 2020
Lahore, Pakistan

Event-Website »

ITM / Hightex

Exhibition for textile machines

New date!
14 – 17 June 2020
Istanbul, Turkey

Event-Website »

Chinaplas

Plastics exhibition

New date!
03 – 06 August 2020
Shanghai, China

Event-Website »

Febratex

Exhibition for textile machinery

18 – 21 August 2020
Blumenau, Brasil

Event-Website »

Converters Expo North

Converting Exposition

New date!
24 – 25 August 2020
Green Bay, USA

Event-Website »

ITMA ASIA

Exhibition for textile machinery

15 – 19 October 2020
Shanghai, China

Event-Website »

INDEX

World leading trade fair for nonwovens

New date!
20 – 23 October 2020
Geneva, Switzerland

Event-Website »

MAHLO – Exhibitions & Events We look forward to meeting you at the following events…

 

Converters Expo North

Converting Exposition

29 – 30 April 2020
Green Bay, USA

Event-Website »

ITM / Hightex

Exhibition for textile machines

02 – 06 June 2020
Istanbul, Turkey

Event-Website »

Igatex

Intl. Exhibition for garment and textile machinery

New date!
01 – 04 July 2020
Lahore, Pakistan

Event-Website »

Chinaplas

Plastics exhibition

New date!
03 – 06 August 2020
Shanghai, China

Event-Website »

Febratex

Exhibition for textile machinery

18 – 21 August 2020
Blumenau, Brasil

Event-Website »

ITMA ASIA

Exhibition for textile machinery

15 – 19 October 2020
Shanghai, China

Event-Website »

INDEX

World leading trade fair for nonwovens

New date!
20 – 23 October 2020
Geneva, Switzerland

Event-Website »

INDEX 2020 postponed Mahlo at leading trade fair for nonwovens now from October 20 to 23

Mahlo GmbH + Co. KG will be presenting product solutions for high-quality and efficient nonwovens production at Index 2020 from October 20 to 23 in Geneva, Switzerland. On booth 47229 you can see, among other things, the latest sensor development for the established quality measurement system Qualiscan QMS-12.

Nonwovens are used in almost every industrial sector and are becoming increasingly important: filter nonwovens ensure clean drinking water, the health sector relies on nonwovens for infection protection, and extremely durable geotextiles play an important role in the construction of dams. No matter what tasks the nonwoven products perform, their functionality must always be 100% guaranteed. However, this can only be achieved if every production step runs flawlessly and all specifications developed in advance are fulfilled. Important parameters in the manufacturing process are weight per unit area, moisture or layer thickness. With its established system solutions, Mahlo can determine these values reliably and without contact. In this way, the German machine manufacturer helps manufacturers and finishers to achieve first-class quality standards and maximum efficiency in production.

The modular system, which also includes sensors and measuring frames, measures, records and controls critical parameters such as basis weight, moisture or layer thickness across the entire width of the fabric. Depending on the application and task, different measuring methods are used for this purpose. Among others, there is a choice of X-ray and beta radiation, white light interference or near-infrared measurement. The latter also uses the latest technical development from Mahlo: as the Infralot IMF-T version, the basis weight and moisture sensor also uses the transmission method for the first time when measuring. This makes it the ideal solution for thicker materials up to 500 g/m². In addition, in contrast to conventional methods, it completely dispenses with a rotating filter wheel. With Mahlo’s newly developed simultaneous filter, all wavelengths are measured simultaneously and at the same point. Instead, the light is distributed simultaneously to six detectors. This eliminates measurement inaccuracies and enables true seed-spot measurement of reference and absorption resonances.

Visitors to the Index will find further solutions, tailored to their needs and requirements, from the Mahlo experts at booth 4229.