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Mahlo launches infrared technology for spunlaced nonwovens

12 May '20

2 min read

Pic: Mahlo

Mahlo has launched infrared technology for measuring and controlling production processes of spunlaced nonwovens. With its systems for process control and quality measurement, Mahlo, manufacturer of measuring and automation systems for the textile and finishing industry, supports manufacturers in the 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 optimising 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, according to Mahlo.

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.

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

Fibre2Fashion News Desk (GK)

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Mahlo launches infrared technology for spunlaced nonwovens

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