SCHWING Technologies

Manufacturer worldwide who offers all advanced thermal cleaning technologies for the removal of polymers and organic contaminations

SCHWING is the only manufacturer worldwide who offers all advanced thermal cleaning technologies for the removal of polymers and organic contaminations from metal tools and machine parts of any type and size. Whether using pyrolysis, thermal decomposition under vacuum conditions or a thermal conversion process in a fluidized bed, SCHWING masters all methods to clean components without any residues:

•    CLEAN: cleaned perfectly without carbon residues
•    QUICKLY cleaned and immediately returned to production
•    GENTLE on the part, tool and the environment
•    ECONOMICAL in terms of energy consumption and operation
•    SAFE through operation with intelligent controls

Beyond this, numerous customers from the international plastics and fiber industry have been trusting the application experience of SCHWING for over 20 years and have their tools and machine parts regularly cleaned at one of the seven SCHWING locations worldwide, instead of operating their own cleaning plant.

With temperatures from approx. 430 °C organic substances (polymers/plastics) are decomposed into low temperature carbonization gas and carbon and removed in this manner from the tools and machine parts. This process is called pyrolysis. With thermal cleaning, the actual pyrolysis phase is followed by a thermal oxidation phase where the remaining carbon is completely removed.

 

The art consists of optimizing the cleaning process in regard to the sensitivity of the product to be cleaned, the cleaning quality, duration, safety, energy efficiency and environmental compatibility.

SCHWING deliberately takes advantage of the individual cleaning processes, for example pyrolysis under vacuum, fluidized bed pyrolysis or hydrolysis and combines them with over 40 years of experience in thermal process control. This produces customized cleaning concepts for specific applications, tools and/or materials satisfying every customer.

VACUCLEAN

is an easy to install, environmentally and user friendly vacuum pyrolysis cleaning system (vacuum cleaning oven) for removing plastic residues from tools and long components.

  • Complete removal of organic adherent matter, free from carbon residues
  • Precise, reliable and gentle cleaning of large tools and components
  • Easy installation (no gas), low operating costs
  • Increased tool life and life cycles, reduced machine downtimes

INNOVACLEAN

is a compact, environmentally and user friendly fluidized bed pyrolysis system which removes all polymers – even halogenated substances such as PVC or PTFE – quickly and reliably from small and medium-size tools and components.

  • Very fast residue-free cleaning in only a single process step
  • Flexible reliable cleaning of assembled and disassembled tools
  • Effective and environmentally compatible removal of ALL plastics
  • Increased tool life, reduced machine downtimes

The precisely controllable cleaning process of INNOVACLEAN utilizes the material and heat transfer of fluidized THERMCLEAN sand (fluidized bed). The product to be cleaned is freed from plastic quickly and without mechanical or thermal interference at polymer-dependent temperatures from 450 to 520 °C.

INNOVACLEAN works completely without waste water and waste. The generated low temperature carbonization gases are cleaned with an integrated thermal afterburner.

COMPACTCLEAN

is a compact, environmentally and user friendly pyrolysis oven which removes all plastics from small tools and components.

  • Complete plastics removal in a single step
  • Flexible reliable cleaning of open and needle shut-off nozzles
  • Effective environmentally friendly removal of all halogen-free plastics
  • Increased tool life, reduced machine downtimes

In only three to five hours and without impacting the tools, COMPACTCLEAN completely removes all organic deposits, e.g. from small parts such as injection nozzles, needle shut-off nozzles, die plates, backflow preventers, screw tips, filter disks, mixers and hot runner systems.

MAXICLEAN

is an environmentally and user friendly pyrolysis system (pyrolysis furnace, pyrolysis oven) for removing plastics without halogenated additives from especially large tools and components.

In four to eight hours MAXICLEAN completely removes all polymer residues in a single process step without impacting the tools mechanically or thermally. The precisely controlled and at any time reproducible cleaning process of MAXICLEAN takes place in an externally gas-heated cleaning chamber with special hot air routing for the optimal distribution of the temperature. The automatic process control monitors the development of low temperature carbonization gases and provides a short cleaning time. Inorganic residual substances are removed using a select after-treatment method.