Purging Material for injection molding machine (Plastic purging agent)
- Daicel Miraizu

How to use? [For extrusion molding]

[For extrusion molding] How to use

How to use

If you change the rotation speed during cleaning
More effective is keep changing the direction of resin flow!

01After finishing the molding process, discharge all the material in the extruder.

02Charge the Celpurge into the hopper and rotate the screw to flow out the Celpurge.

03When the front material doesn’t remain, the discharged resin turns white.

04Charge the subsequent material to flush out the remaining Celpurge, the cleaning is completed.

Depending on viscosity and design of die head
Stay in dead space

Celpurge is also effective in extrusion molding, Unfortunately, not all extrusions are perfectly clean.

This is because a dead space is created where the direction of the flow path changes, and because a resin with a higher viscosity that used in injection molding is used.

For example, when extruding a sheet or film using a T-die, there is always a portion that stays around the both side of T-die.

Stay in dead space

Molding method

Excellent molding methods are as follows.
The required amount is depending on the die shape and capacity.

Inflation / film molding, tube molding, profile extrusion molding, compounding / kneading

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Usage by purpose

Inflation cleaning

Effective for cleaning and color change of inflation molding machine!

Celpurge NX-E is used for cleaning and color change of polyethylene inflation molding machine.
You can use it by mixing with the product resin you are using.

It can be formed into a film and rolled up.

  • Appropriate dilution ratio is NX-E / polyethylene = 2/1 to 1/1.
  • Supports LLDPE, LDPE, HDPE.
    The end point of color change is easy to monitor.
  • The color does not gradually fade, but the color disappears in stripes. So it is easy to determine the end point. It can also remove mildey carbonized foreign matter.
  • You can remove the black dots.
Inflation cleaning

* If film formation is difficult due to uneven thickness, increase the temperature by 5-10℃.
* If film formation is not required, blending with product resin is not necessary.

/ Compatible grades / NX-E

Cleaning of kneading and
compound (granulation)

Effective for compound extruder that makes pellets!

Celpurge can also be effectively used in extruders for compounding pellets.
It is effective to change the rotation speed during cleaning to change the speed of the resin flow.

Also, if you charge it before removing the screw, you can pull out the screw more easy.
However, cleaning under the hopper is not possible because the cleaning effect is not achieved in the unmelted state.

01After finishing the granulation process, discharge all the materials in the extruder.

02Open the die and remove the screen mesh.

03Put the Celpurge into the hopper, and rotate the screw while the vent is open to flow the Celpurge.

04When resin is turn white color, mean no residue of the previous material, Stop the screw rotation, open the die, and remove the resin remaining in the diehead.

05Flow the next material with the diehead open, and replace it until cleaning completed.

Clean the bottom of the hopper with melted strands (with audio)