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Purgex™ 742

1 of 8 products in this brand
Purgex™ 742 Commercial Purging Compound is engineered specifically for polypropylene copolymer applications. Like its predecessors, Purgex™ 742 has non-toxic, non-abrasive active ingredients with a polyethylene carrier. This product provides dual-cleaning action with a mechanical component and a unique active ingredient. Purgex™ 742 is a ready-to-use blend that effectively removes contamination from the screw, barrel and hot runner system. Purgex™ 742 is designed to reduce the standard amount of purging compound used, to significantly reduce purge time, and to minimize scrap.

Functions: Purging Agent

Compatible Polymers & Resins: High-Density Polyethylene (HDPE), Low-Density Polyethylene (LDPE), Polyethylenes (PE), Polypropylenes (PP), Thermoplastic Polyolefins (TPO)

Processing Methods: Injection Molding

End Uses: Industrial Parts, Mold Making, Valves

Technical Data SheetSafety Data Sheet
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Knowde Enhanced TDS

Identification & Functionality

Chemical Family

Polyethylenes,

Polyolefins

Plastics & Elastomers Functions

Purging Agent

Technologies

Plastics

Product Families

Plastics — Polymer Additives

Processing Aids

Features & Benefits

Materials Features

Non Abrasive,

Non-Toxic

Physical Description
  • Blend & polyethylene and an active component
  • Non-toxic, non-abrasive, and safe
  • Ready to use and easy to remove
Features & Benefits
  • High efficiency purging compound specifically designed for polypropylene copolymer applications for injection molding of automotive interior trim parts.
  • Reduced amount is required for efficient purging and low scrap.
  • Effectively cleans the barrel, screw, check ring, as well as hot runner systems and is safely processed through tools with valve gates.
  • Is easily removed from the system with the next production resin.
  • With regular use, Purgex™ forms a temporary barrier which protects steel surfaces, extending the cleaning process.

Applications & Uses

Markets

Industrial

Applications

Industrial — Chemical & Industrial Manufacturing

Other Industrial Applications,

Tooling & Moldmaking

Compatible Polymers & Resins

High-Density Polyethylene (HDPE),

Low-Density Polyethylene (LDPE),

Polyethylenes (PE),

Polypropylenes (PP),

Thermoplastic Polyolefins (TPO)

Plastics & Elastomers End Uses

Industrial Parts,

Mold Making,

Valves

Plastics & Elastomers Processing Methods

Injection Molding

Applications & Uses

Process

Injection Molding
Works Best on These Resins PP Copolymer, TPOs, PE
Also Useful for PP Homopolymer, HDPE, LDPE
Amount Needed 1 barrel capacity, depending upon condition of machine/tool and coolant/additive loading.
Temperature Range 375°F - 475°F
Recommended for Hot Runnerss, CheckValves, MixingNozzles, Cold Runners