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  1. Replies
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    Re: Storage Box Lid Warpage

    Hello Rick,
    Nice to talk to you again after long time.
    I will try different cooling profiles to solve problem.
    I will mold also the bottom part. This is a good method. But disadvantage of this...
  2. Replies
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    8,533

    Re: Liquid color issue

    You can mix the liquid color with raw material outside inside a batch mixer. then load to machine by pipe or manually.
    It is a temporary and messy solution but, mostly solves our mixing issues.
  3. Replies
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    2,379

    Storage Box Lid Warpage

    Hello All,
    I agreed with a company for manufacturing series of storage boxes.
    Numbers are too high, therefore cycle time is important.
    We did initial trials of molds without any cooling. All lids...
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    4,481

    Plastic with Magnetic Properties

    Dear Friends,
    This is my first post after long time. During last 2 years, I was mostly working at the commercial side of office. So, a bit rusty here...
    I came with a question here.
    We produce a...
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    Re: Creaking noise during injection

    This also happened to me (Kraussmaffei 420t). It sounds like not creaking but breaking sound. But very loudy one, I can hear that from my 75m away office.
    It happens in different stages
    - This...
  6. Replies
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    2,879

    Masterbatch Storage

    Hello All,
    Im trying to fix this mess from half MB bags everywhere.
    How do you store masterbatches ?

    There is such an equipment;...
  7. Replies
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    6,736

    Re: Packaging of Material

    Thanks for the answer,
    Currently, I have problem with non-hygroscopic material (PP) coming with octabin. Condensation during shipping may cause this ? But if it were, i think that would only be...
  8. Replies
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    Packaging of Material

    I have 4 different material and receive the materials with 25kg bags for now. (ABS, MABS, PP )
    I want to switch to 1 ton delivery to reduce handling. and I would like to know advantages &...
  9. Replies
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    Re: Quality Control / Color Match

    Unfortunately, pre-colored material is extra %20 cost.

    Any information, how to find saturation point of MB to ABS. How to do it injection molding machine by myself to check the MB performance?
  10. Re: Looking back to your first few years in molding ...

    comparing you I am new to injection molding -only 5 years-. But I also have an embarrassing story..

    Once I was working on a 150t Arburg machine and I had colour/material mixing problem. Screw had...
  11. Replies
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    7,387

    Re: LOTO on IMM during change overs?

    As I understood from " locked out", you mean machine doors must be opened and not be able to close during mold changeover.

    We also spend intensive effort on machine safety of injection molding...
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    Re: CmK analysis for injection molding machine

    Great, I also use residual melt cushion, inj. time and peak inj. I am not very aware of methods but I think measuring the part is not a criterion for machine performance, isnt it ? Of course for CpK...
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    Re: Flash in mould

    Ok, I will do it. I already have your book :)

    This was a discussion with mould maker just 30 mins ago. They said, when I use lower temperature I will need more pressure and this will lead to...
  14. Replies
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    Flash in mould

    Which of the below leads to more flash on mould ?

    20C mould temperature and high injection pressure,
    or
    40C mould temperature and relatively less injection pressure.

    Processing PP on 650t...
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    CmK analysis for injection molding machine

    I am performing CmK study for machine acceptance and here is my question;
    What parameters do you use for CmK analysis for injection molding machine ?

    Do you use holding time or less holding time...
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    MFI Test Machine

    Hello,

    I am asked if it is necessary to make MFI test for incoming materials. I said it is nice to have, but I have never used this machine before and I do not know exactly how to use information...
  17. Re: Basic Injection moulding processing help needed!

    1- see my post here;

    http://www.injectionmoldingonline.com/forum/showthread.php?t=391

    2-
  18. Re: Looking back to your first few years in molding ...

    Now I understand why you insist on clamping through the mould plates :))
  19. Re: Formats effeciency sheets and quality formats required

    Also for me, SPC and FMEA forms would be beneficial. Actually I am wanted to make process FMEA for injection molding machine and I am not sure how to summarize all related topics into FMEA :)
  20. Thread: Pack and Hold

    by jonturka
    Replies
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    8,642

    Re: Pack and Hold

    In european machines I have never seen two different 2nd stage (pack and hold). There is only 1 and called hold :) (There is 16 stage profile you can add of course but all called hold)
    Also in...
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    Re: Determination of cooling water flow rate

    You need to achieve turbulence flow for each flow lines. Turbulence means Reynold number is over 4000.

    First you need to know nominal diameter of your cooling channels.
    Then You need water...
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    Re: Quality Control / Color Match

    We were working with a world wide company. Now we switched to a local supplier for new factory. Time will show how quality is effected.

    Fyi: ABS is from BASF, MB was from Clariant and now local...
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    Quality Control / Color Match

    Hello,

    I am working in Turkey. I am responsible from plastic production of a home appliances company.

    After 1 year of purchasing plastic and decorating equipments and establishing processes,...
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