Log In

Come Join Us!

Are you an
Engineering professional?
Join Eng-Tips Forums!
  • Talk With Other Members
  • Be Notified Of Responses
    To Your Posts
  • Keyword Search
  • One-Click Access To Your
    Favorite Forums
  • Automated Signatures
    On Your Posts
  • Best Of All, It's Free!
  • Students Click Here

*Eng-Tips's functionality depends on members receiving e-mail. By joining you are opting in to receive e-mail.

Posting Guidelines

Promoting, selling, recruiting, coursework and thesis posting is forbidden.

Students Click Here


Reducing costs in Thin wall Packaging

Reducing costs in Thin wall Packaging

Reducing costs in Thin wall Packaging

I hope it's alright to keep posting questions.

Currently the company I work for manufactures thin-wall ice cream tubs with high flow PPCO-block. We do not add the regrind into the same process as we face numerous quality issues. I've been told black spots, poor mixing of regrind and virgin resin are the top reasons. We do not have the capability to compound. We can only dry blend currently.

I've been told that this process cannot be made cheaper. If I can use the regrind it will definielty make the process more efficient and reduce costs. (Obviosuly eliminating the cause of regind will also increase efficiency, which I'm not looking at at the moment) I read that fines are the primary cause for black spots as they tend to degrade much faster. Suppliers of Dedusters say that by using their technology fines can be elimiated and thus black spots eliminated as well. How well does this work? What are the other problems I wil run into trying to dry blend material in thin-wall packaging?

Can I empoly other additives to make the process more efficient? Nucleating agents to reduce cycle times?

Can I use mircocellular foaming to reduce costs? (mucell) or chemical foaming agents from Clariant to reduce material consumption?

How about any cheaper fillers? These ice cream tubs are stored in (-40C) blast freezers.

Any information you can provide will be most appreciated.

RE: Reducing costs in Thin wall Packaging

Its normal to use virgin material only in thin wall packaging. Using regrind will only give on-going quality and productivity issues (not to mention the headaches & sleepless nights you might experience).

Sounds like you need to do a lot of R&D.

Good luck.

Paul Kuklych

RE: Reducing costs in Thin wall Packaging

appreciate the reply.

Red Flag This Post

Please let us know here why this post is inappropriate. Reasons such as off-topic, duplicates, flames, illegal, vulgar, or students posting their homework.

Red Flag Submitted

Thank you for helping keep Eng-Tips Forums free from inappropriate posts.
The Eng-Tips staff will check this out and take appropriate action.

Reply To This Thread

Posting in the Eng-Tips forums is a member-only feature.

Click Here to join Eng-Tips and talk with other members! Already a Member? Login


White Paper - A Guide to 3D Printing Materials
When it comes to using an FDM 3D printer effectively and efficiently, choosing the right material at the right time is essential. This 3D Printing Materials Guide will help give you and your team a basic understanding of some FDM 3D printing polymers and composites, their strengths and weaknesses, and when to use them. Download Now

Close Box

Join Eng-Tips® Today!

Join your peers on the Internet's largest technical engineering professional community.
It's easy to join and it's free.

Here's Why Members Love Eng-Tips Forums:

Register now while it's still free!

Already a member? Close this window and log in.

Join Us             Close