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  1. Replies
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    2,812

    Re: Help with bubbles in Nylon parts

    Hello,
    the main question is what the bubble is - pressed air or vacuum? I suppose, that ithe bubble is based on vacuum. In the sprue it is "normal" because you have a thick material and during...
  2. Replies
    6
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    5,484

    Re: Help w Polycarbonate Black Specks

    As Crabstix wrote. .. this is MUST. the screw must be purged out, PP for is a good for it. Somebody call it like "issue for Mondays" :-)
  3. Replies
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    5,484

    Re: Help w Polycarbonate Black Specks

    Hi Joel,
    clean screw is a basic requirement. (but you know it:-) The screw must be also smooth without any damages or grows, where the material can stay. Low Screw RPM, low back pressure as much is...
  4. Replies
    2
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    3,899

    Re: Suitable screw type

    Hi,
    as Nemanja wrote...¨
    from ENGEL S8 screw should be OK, S10 will be ok (but you have to pay more :-)
  5. Replies
    2
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    3,640

    Re: Using Cashew Gate on TPE

    Hi Joe,
    is hard to say what is wong. Please check the weight of part vs sprue tip diameter. For example for TPE is recommended for 10 grams part diameter 1,1mm. Please check the design. You can try...
  6. Replies
    2
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    6,506

    Re: Thinswitch - limit switch alternatives

    hello, I have a good experiences with Balluff sensors for example BNS006E
  7. Thread: Color Shift

    by Pilot
    Replies
    2
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    3,626

    Re: Color Shift

    please check the parts also under UV-light. It looks, that hte color masterbatch can be degradated. Please check the processing temp. and residence time in the barrel. Please check also residence...
  8. Replies
    5
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    4,943

    Re: minimum mold dimensions

    To Jendalf: tool must be bigger than this hole :-)
  9. Re: “Splay” issue on PA66 GF30% with UV stabiliser.

    Please check also diameter of machine nozzle and tool inlet. sometimes the splays can come from big shear, try to reduce injection speed. Please check also front of melt on short shot parts. If you...
  10. Replies
    5
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    4,943

    Re: minimum mold dimensions

    hello, usualy the minimum mould dimensions are mentioned in machine drawings. If not, is there a rule, take a minimal distance between ejector holes on moving side and this is minimal toolsize - for...
  11. Re: New to the Page & New to Injection Molding, after some advice

    Hi,
    first of all please do a robust bussines plan including a financial calculation. I am afraid, that only this product is not enough...
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    1
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    3,415

    Re: Thermocouple junction

    hi, the J type thermocouple is with grouded junction + grouded shield. Is not necessary to ground it in the cabinet, because the grouging is done ba contatct steel to steel in barrel hole.. (I mean...
  13. Thread: M.F.R. Question

    by Pilot
    Replies
    5
    Views
    4,788

    Re: M.F.R. Question

    Hi, Range of your values is too big. Please check the conditions of your MFR test procedure, if is it acc standard EN ISO 1133. Normal range of MFI is +/-5 (max)
  14. Replies
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    2,284

    Re: Impossible piece from the 70s?

    Hi, I see simple product from very simple injection molding tool (open-close, no cores etc) . Tool is probably multicavity with cold runner (banana)
  15. Replies
    3
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    2,605

    Re: Netstal HP1500/870 1990pd - Overheating!

    yes, if the machine is not moving, the hissing means oil leakage through valve. the oil is under pressure and it generete the heat (shear in the liquid)
  16. Replies
    3
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    2,605

    Re: Netstal HP1500/870 1990pd - Overheating!

    hi,
    it looks, that you have a issue with one hydraulic valve in the circuit.
    please check the valves with IR camera if is possible.
    You have a oil heat up on it.
    Valve is not fully closed.
    It...
  17. Replies
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    4,712

    Re: KM Not achieving clamp pressure.

    ;):D yea Leprechaunt ....
  18. Replies
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    4,712

    Re: KM Not achieving clamp pressure.

    REMARK:
    the calibration is necessary. Please contact KM service. it is a best way...
    Before, please check the clamping force drop after 10 minutes. If it is too much more than 12% of clamping force...
  19. Re: Round pieces injection resulting squared problem

    could you paste a photo of the part and injection gate position please?
    also information about used material and if you made a filling study
  20. Replies
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    25,025

    Re: Remove screw from Kraus Maffei 200-1000 C1

    It is a looooong time ago for me..... If I remember, inside are two halfmoons and the locking nuts are fixating the halfmoons in position. Halfmoons are connected by rubber O-ring. The screw is...
  21. Thread: Krauss Maffei

    by Pilot
    Replies
    2
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    616

    Re: Krauss Maffei

    as usually 4 digits from hot-line phone number to KM Germany (it can be changed)
  22. Replies
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    2,537

    Re: FR Rated Materials

    the base is to have a propper drying and proper process temeratures You have to still have in the brain, that the material contain FR aditives, which are sensitive for temperature. If FR aditive...
  23. Replies
    3
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    357

    Re: KM 175/700/C2 35 mm Screw Tip Issue

    I fully agree with this. - very unusual
    Please talk with your maintennce guy, how the screw hydraulic motor was replaced. I can imagine, that with reverse rotation the stucked tip can be released. I...
  24. Replies
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    36,149

    Re: KM 175/700/C2 35 mm Screw is stuck

    is not possible to move screw forward and take it out through barrel head?
  25. Thread: Merry and Happy

    by Pilot
    Replies
    10
    Views
    2,222

    Re: Merry and Happy

    :-) I am still here for you :-)
    R.
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