Choosing the right purging agent

Improve product quality and reduce downtime and scrap rate with the new smart purging agents

Efficient cleaning of thermoplastic processing machinery for leftover resin and other contaminants that build up on the interior is important to ensure a good product quality and to reduce downtime and scrap rate, this way saving money and raw materials.

Ramclean®, a new generation of products, is a line of chemical purges and mechanical purges that allows you to run an effective production:

Chemical purges

Chemical purges use foaming agent to get the purging process as efficient as possible as well as cleaning negative flow areas. The foaming agents are used to enhance the purge as well as to clean hard-to-reach/negative flow areas. Soaking (stopping the screw) is needed and popping noises will accrue as a part of normal purging protocol.

Mechanical purges

Mechanical purges rely on shear force and viscosity along with additives and fillers to clean the machinery. When using mechanical purges no soaking is required (keeping it still in the barrel) and it does not create popping sounds as part of the process.

  • Non-corrosive
  • Non-abrasive
  • Non-toxic
  • Purges almost any thermoplastic material
  • Compatible with almost any processing technology

Grade selection guide

In order to select the purging agent best fitted to your production, parameters such as temperature, specialty, processing technology, resin to be cleaned need to be taken into consideration. This guide will help you pick the purge agent that matches your needs.

SpecialtyGeneral purposeGeneral purposeGeneral purposePVC / ABSBlown film, PVC
Works best onPP, PE, PA, ABS, PC, ASA, EVOH, POM, CopolymerPP, PE, PA, ABS, PC, ASA, EVOH, POM, CopolymerPP, PE, PA, ABS, PC, ASA, EVOH, POM, HomopolymerPVC / ABSPE, PP, PVC
Foaming %MediumHighMediumMediumHigh
Hot runner compatibleYesYesYesYesYes
Injection moldingExcellentExcellentExcellentGoodGood
Blown filmGood  GoodExcellent
Food contact approvalYesYesYesYesYes
SpecialtyTransparent PCGeneral purposeVery high tempsTransparent PMM
Works best onPC, AcrylicsPP, PE, PA, ABS, PC, ASA, EVOH, PET POM, CopolymerPP, PE, PA, ABS, PC, Stryrenic polymers, PEI, PEEKPMMA
Foaming %NoneNoneNoneNone
Hot runner compatibleYesYesNoNo
Injection moldingExcellentExcellentExcellentExcellent
Blown film    
Food contact approvalNoYesYesYes