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Purging compound

Clean Xpress - Purging compound   →  Purging compound

Purging compound

Why purging ?

Reasons of purging

SOLVING QUALITY ISSUE

Solving quality issue during color & material changeovers

REMOVE CONTAMINATION

Via carbonization, unmelting.

PRODUCTION PLANNING

Production planning issues & substential time & cost to clean the screw

Types of contaminants

  • Black Specks (carbonized material) lodged in extruder & barrel dead zones.
  • Material streamlines
  • Remaining Color Pigments lodged in dead zones
  • Carbonized materials in Die Head
  • Gels
  • Unmelted resins
  • « Fish Eyes » (in films – caused by black specks)
  • Resins or compound with metal affinity
  • Resins blocked inside the barrel

Why contaminants appear

  • Thermally-sensitive or Shear-sensitive materials / blends / compounds being degraded inside the extruder.
  • Materials & Compounds presenting metal affinity and remaining stuck.
  • Design and Ageing of the machinery – impacting the presence of dead zones in the barrel / die-head.
  • Ageing and design of the screw – a deteriorated screw will create more risk to get contaminants.
  • Frequent changes of RPM.
  • Unusual pressure variation.

When purging ?

BETWEEN 2 PRODUCTION BATCHES

Color changeover

DISMANTLING OPERATION

Shutdown and startup

A purging compound is a plastic resin compound designed to clean all primary plastic machinery (injection molding machines, blow molding machines, extruders) when changing color, resin or simply to remove black specks or contaminations.

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Existing purging solutions

shutterstock_586096136

LIQUID

EFFICIENCY

PRODUCTIVITY

MANUAL CLEANING

EFFICIENCY

PRODUCTIVITY

open hand
Polypropylene granule close-up background texture. plastic resin ( Masterbatch).Grey chemical granules for industrial plastic production

VIRGIN RESIN

EFFICIENCY

PRODUCTIVITY

CHEMICHAL CLEANING

Chemical cleaning is an officiant process with surfactant effect for the barrel dead zones. However, it does require a long soaking time.

EFFICIENCY

PRODUCTIVITY

scientist holding flask with lab glassware and test tubes in chemical laboratory background, science laboratory research and development concept
industry background with blue gear wheels

MECHANICAL CLEANING

Mechanical cleaning ensure an efficient scratching effect, which can be very abrasive (glass fibers are often used for the equipment).

EFFICIENCY

PRODUCTIVITY

With Clean Xpress

The Purging Step polytechs

EFFICIENCY

PRODUCTIVITY

With Clean Xpress solution we deliver an Hybrid Cleaning Compound with Mechanical (no abrasion) & Chemical strengths, Material affinity Carrier selection (we adapt the Clean Xpress grade to your resin to clean, Polytechs knowledge & experience (we implement the appropriate purging step to your process.)

IT'S TIME TO DISCOVER NOW THE PURGING CAPABILITIES OF CLEAN XPRESS

DISCOVER NOW

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