coextrusion with nylon 6 - Plastic processing forums for extrusion information and advice and for other feed screw applications.

Ask the experts! These processors and consultants have been there and done that. Post your enigma now!

UBBFriend: Email This Page to Someone!

Plastic processing forums for extrusion information and advice and for other feed screw applications.

Extrusion, Single Screw

coextrusion with nylon 6

profile | register | preferences | faq | search

next newest topic | next oldest topic

Author

Topic: coextrusion with nylon 6

Makeit Work
Senior Member

Posts: 5
From:USA
Registered: May 2008

posted January 08, 2009 11:02 AM

Volatiles- Is there any issues that may arrise when coxtrudeing nylon 6 with another thermoplastic material over the nylon 6? This would be done utilizing a coextrusion crosshead.

IP: Logged

Tom C
Moderator

Posts: 915
From:Brodheadsville, PA USA
Registered: Jun 2001

posted January 08, 2009 03:13 PM

If the nylon is wet and a non-vented extruder is used you may have foaming of the nylon.

If the nylon has a large amount of monomer in it, who knows what would happen? Probably nothing.

Concerns would be:

A viscosity match between the materials
A velocity match at the coex entrance
Thermal stability of the other material
Retained heat from the nylon
Temperature of the base material
Differences in freezing point and shrinkage

------------------
Best Regards,

Tom Cunningham
www.ExtrusionTechnicalServices.com

[This message has been edited by Tom C (edited January 08, 2009).]

IP: Logged

All times are ET (US)	next newest topic \| next oldest topic
Administrative Options: Close Topic \| Archive/Move \| Delete Topic
	Hop to:

Contact Us | Feed Screw Designs