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Mykal has launched PU Cleaner (SB 6), a product designed for flushing through polyurethane mixing heads that is a proven alternative to methylene chloride in the aerospace and automotive sectors.

For such industries, which make use of polyurethane injection moulding and casting, the cleaning and maintenance of equipment is essential for production not to be interrupted by faulty or dirty injection equipment and components.

Methylene chloride has traditionally been used for the flushing of PU mixing heads and injection-moulding equipment due to its fast purging and drying properties.

However, it can only be used once and requires users to wear protective clothing and respiratory equipment because it is classified as a Category 3 Carcinogen – R40 Possible Risk of Irreversible Effects.

Methylene chloride also requires specialist disposal and storage facilities before, during and after use due to its hazardous nature.

Although most of the methylene chloride used in flushing operations evaporates to atmosphere and negates the disposal of large amounts, this contributes to the user’s VOC emissions.

However, the ongoing removal of hazardous chemicals such as methylene chloride from the workplace and the need to reduce VOC emissions through Health and Safety legislation provides an opportunity for PU Cleaner (SB 6), according to Mykal.

PU Cleaner (SB 6) contains a release agent that, when used regularly, can prevent the build-up of semi-cured PU in the mixing chamber.

It works through a flushing cycle of between 2-5 seconds followed by a 45-second air blast to dry.

PU Cleaner (SB 6) can also be re-used up to eight times.

Whether removing cast or foam polyurethanes, PU Cleaner (SB 6) can be separated out from waste collected after the flushing cycle without significant reduction in cleaning power.

This means PU Cleaner (SB 6) can provide a lower overall cost in use compared with methylene chloride.

Mykal Industries

Mykal Industries manufacture a definitive product range of industrial degreasers for virtually all applications from maintenance cleaning to sophisticated process degreasers. Our degreasers offer genuinely safe alternatives to traditional hazardous solvents targeted by Occupational Exposure, Disposal & VOC Emissions legislation, such as Trichloroethane, Acetone, Methylene Chloride and IPA.

The range of citrus degreasers, aqueous process degreasers and specially blended products for component and equipment degreasing combines high cleaning performance with environmental safety. These products are extremely effective against:-

  • Oils
  • Greases
  • Bitumen
  • Silicone
  • Sealants
  • Wax
  • PU
  • Adhesives
  • Resins
  • Inks

Several products carry approvals from NATO, DEFSTAN, DEFRA and both the Aerospace and Automotive industries.

Mykal’s Safe Solutions for Industrial Degreasing make it easier for companies to choose and specify safe degreasing products.

  • Degreasers
  • Citrus solvent degreasers
  • Water based degreasers
  • Aqueous ultrasonic degreasers
  • Aqueous spray washing degreasers
  • Component cleaners
  • PU, adhesive and resin removers
  • Impregnated cleaning & degreasing wipes

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