Posts: 8
From:
Registered: Apr 2003

posted April 23, 2003 10:58 AM            

---

Anyone got any advice on rapid cleaning methods for screw segments for a twin0screw extruder. I use a lab-scale extruder and a variety of compounds so purging compounds have proved fairly ineffective.
It seems that I always have to fully strip the screw in order to get the segments cleaned properly. This is very laborious and time-consuming!
Any help??

IP: Logged

Posts: 10
From:Grand Prairie, TX, USA
Registered: Jun 2001

posted April 25, 2003 04:38 PM            

---

You might want to look at dry-ice cleaning devices. They come in a few different sizes and can clean things off pretty well without messing with the metal. Hope that helps some.

------------------
JeffdlS

IP: Logged

Posts: 299
From:McHenry, IL USA
Registered: Nov 2002

posted April 28, 2003 07:31 AM               

---

In the past, I've used a Berringer Jet Cleaner, as well as a true Pyrolysis Unit. The Pyrolysis Unit does a better job, but both methods are expensive, and require disassembly.

IP: Logged

Posts: 313
From:Brodheadsville, PA USA
Registered: Jun 2001

posted April 28, 2003 08:48 AM               

---

I have seen very good results using Shuman's Dynapurge on a lab size twin screw.

Tom C

IP: Logged

Posts: 4
From:ALTAMONT,NY,USA
Registered: Oct 2003

posted October 26, 2003 08:35 PM               

---

LOOK INTO A PURGING COMPOUND CALLED BAMBERKO PURGE. IT'S AN ACRYLIC PURGING COMPOUND AND IT WORKS GREAT.

IP: Logged

Posts: 2
From:
Registered: Feb 2004

posted February 05, 2004 12:52 PM               

---

I've got the same problem, buy I work with powder paint. Can anyone help me?

IP: Logged

Posts: 299
From:McHenry, IL USA
Registered: Nov 2002

posted February 08, 2004 11:58 AM               

---

In my own humble opinion, a simple crushed Acrylic will pull away anything from the screw's and barrel.

Although I've never heard of BAMBERKO PURGE, I would indeed give it a try. However, read the instructions carefully, and don't try to short cut a good thing.

To many people will play with heats to "accelerate" cleaning, and really screw up the screw's. I've seen to many "blue screws" in the past.

IP: Logged

Posts: 1
From:
Registered: Feb 2004

posted February 08, 2004 10:24 PM               

---

TRY A PRODUCT CALLED CORTEX

IP: Logged

Posts: 2
From:Ireland
Registered: Jan 2004

posted February 25, 2004 09:48 AM               

---

I my experience a purging compound o made up of 60% chalk deos the job every time. Ask the manufacturer for a sample of this mix.

IP: Logged

Posts: 1
From:Elyria, OH USA
Registered: Apr 2004

posted April 02, 2004 10:02 AM               

---

In the past I have seen an effective purge of 50% PP and 50% PC...

IP: Logged

All times are ET (US)