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  1. Thread: Thermoset

    by Crabstix
    Replies
    3
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    6,743

    Re: Thermoset

    I cant comment as we do not use thermoset plastics. Can the supplier not help you?
  2. Replies
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    5,478

    Re: Help w Polycarbonate Black Specks

    Have you had any luck with the black specks?
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    2,811

    Re: Help with bubbles in Nylon parts

    Post some pictures
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    5,478

    Re: Help w Polycarbonate Black Specks

    We had similar issues. We resolved this by not leaving any material in the barrel over night, so in other words, purge out as much PC as possible and then even purge with PP. Its a pain in the ass...
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    2
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    6,620

    Re: Flexing a living hinge

    What sort of volumes are we talking?
  6. Re: Suggestions to help part stick to the movable plate

    before making any under cuts - Go up on the cooling, maybe 3 or 4 seconds longer
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    6,974

    Re: Masterbatch material dispersion

    The picture is not too clear but I think you need to get a special masterbatch mixed up for that specific job.
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    7,957

    Re: How was this molded?

    perhaps blow moulded?
  9. Re: Need some help trying to figure out the manufacture of this machine

    This looks like a custom built/ DIY machine.
  10. Re: Advice for scientific molding on a Chinese injection machine - newbie

    This looks like a jetmaster controller (Chensong) ?
  11. Replies
    6
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    3,599

    Re: Inconsistent Shrinkage Rates

    Not too much experience with Nylon but it is a hygroscopic material - wont this perhaps cause some of your issues? The longer the part is out the mould the more moisture it absorbs. When we pack our...
  12. Replies
    12
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    1,751

    Re: What is this defect?

    Could have some blockage in the nozzle, small piece of steel, just small enough to allow material through but cause plenty of shear heating. I had an issue once where the screw tip broke off and was...
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    1,751

    Re: What is this defect?

    .
    I have experienced this before - The issue for me was Degradation of material. I lowered TEMPS and also in my case lowered the dose on the Masterbatch.
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    60,701

    Re: Machine leveling tips

    There is no short cut to leveling a machine. The torque wrench will help with the leverage when adjusting the nuts and the also the ratchet function will help but once the nuts go under strain you...
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    84,916

    Re: Before I sell it for scrap... KX220

    I think they work on 10V. you could try and shift the potentiometer so that it uses a different position, in other words it shifts the wear marks. It means you will have to recalibrate your...
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    84,916

    Re: Before I sell it for scrap... KX220

    another obvious one is the voltage coming to the potentiometers ?
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    6
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    84,916

    Re: Before I sell it for scrap... KX220

    We have some old battenfelds, 1985 models. - On occasion I strip and clean those potentiometers ....very carefully. have you swapped the potentiometers with other units?
  18. Re: Chiller water is getting dirty and brownish color

    I use some water soluble cutting fluid in our chiller water. Keeps it clean and kills off any algae growth.
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    3,874

    Re: Processing Troubleshooting

    Use a small piece of masking tape on the vent is a quick way to check if venting is your issue.
  20. Thread: Resin change.

    by Crabstix
    Replies
    3
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    5,139

    Re: Resin change.

    At a quick glance - The copolymer is tougher than the homopolymer. Up the cooling a fraction?
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    2,734

    Re: Van Dorn 300HT excessive noise

    It could be sucking air in somewhere - check seals/o-rings. I have no experience on Van Dorn - but out Negri Bossi has a block that bolts onto the pump, this block is the main oil pickup from the...
  22. Re: General operation of Arburg Allrounder 170 CMD 145-50

    Perhaps the machine was equipped with a robot/Sprue Picker? Perhaps the machine is waiting for a signal from the robot/Sprue picker, before it will close the mould. Just another option to...
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    4,067

    Re: Plastic Flakes forming on Mold surface

    Hi Brian,

    Yes it is a sub gate. and a brand new mold. I will check it out.


    Thank you,

    Nicholas
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    4,067

    Plastic Flakes forming on Mold surface

    Good Day,

    What could be the possible cause of plastic flakes forming on the mold surface? Its a new issue that has develop on a mold this morning. Never experienced this before. Running PP.

    ...
  25. Re: Krauss Maffei, Battenfeld, user manual, documentation, electronic schemes

    Hi Nikolay,

    I have a manual from a 35T Battenfeld which is UNILOG 4000.(English) I think the 75T is a UNILOG 1000? I also am familiar with these machines as I still have a few that are still...
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