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This news article was originally written in Spanish. It has been automatically translated for your convenience. Reasonable efforts have been made to provide an accurate translation, however, no automated translation is perfect nor is it intended to replace a human translator. The original article in Spanish can be viewed at Doble desgasificación para facilitar el reciclado

A special spindle of OMP allows many types of plastics processing

Double degassing to facilitate recycling

Drafting PU15/03/2002

RECYCLING

The Italian OMP, represented in Spain by Luiso, S.L., has taken a big step forward with the development of a specific line for the recycling of plastics that greatly things companies specializing in the recovery of such materials. It is mainly an extruder equipped with a double degassing spindle.

An important feature of this configuration of the spindle is that, with a total of three zones of compression, the homogeneity of the material increases

Whereas the easily recyclable industrial waste (polished, with few printing inks, dry) are today in day virtually disappearing in the market, has emerged the need to treat wastes less precious, of poor quality, but that, despite not requiring special treatment with washing facilitiesthey are difficult to recover with the facilities currently available.

In response to this demand, the Italian company OMP has released a complete plant for the recovery of PE/PP film with many impressions, using an extruder of 85 mm diameter with double degassing, which could already be seen in the latest edition of the K'2001 in Düsseldorf.

Thanks to this type of extruder, mainly due to its dual system of deaerating, molten material is a time of great length, more than the simple degassing. In addition, the effect of drying out is enhanced by the fact that between the two points of vacuum, the spindle is not cylindrical but then compresses the material causing the gases still present inside after the first degassingthey are released and successively expelled in the second degassing (getting rid of the gas still present within it after the first degassing and then expelled by the second desgasficación.)

Another important feature of this configuration of the spindle is that, with a total of three zones of compression, the homogeneity of the material increases, allowing the addition of additives such as antioxidants, peroxides, etc.

The extruder is suitable for treating materials such as PE, PP, PS and ABS, and especially the PET.The diameter of the spindle of the extruder proposed by OMP for this type of installation are 85, 105, 130 and 180 mm, with a length of 40 d.

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