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  1. Replies
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    Re: Overmold Possibility

    Hi,

    Is surface important? We do some sort of "holders" that we put on metal plates. They put metal plates in wanted position, but on other hand they are visible on surface. Holders are molded from...
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    1,132

    Re: Chiller systems

    Hi,

    In what country is your factory?

    Regards,
  3. Replies
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    1,202

    Re: Shot Size Procedure

    Hi,

    Depends from molding product, dimensions are sometimes more important than cosmetics (at least in my case).
    Im making around 20ccm of cushion plus 98% of shot volume (that is determent during...
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    1,217

    Re: Loud noise when mould opens.

    Hello,
    Are you sure sound is coming from mold? Check also speeds and pressure drops during mold opening. It happens that machine can make "hydraulic jump" if you go from high speed to low or when...
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    Re: Molding w Flame Retardant

    In my case is PA 66+GF30+FR, and best results (for my process) is to make preventive mold maintenance. Just cleaning tools on certain cycle number (depends from tool) reduced scrap rate from 10% to...
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    Re: Arburg Questions

    Usually you have all info what you need on few screens in "monitoring" part of menu (yellow one). Pictures shows just some of options that you can monitor. Maybe because im so use to Selogica, but i...
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    1,267

    Re: Cleaning polymer from sprue

    Best so far (at least for my production :) ) is UltraPurge. Cleaner expanding after smelting and "pick up" rest from old and damaged material. Im usually changing from PA 6.6 GF30 to any TPE material...
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    Re: Cleaning polymer from sprue

    Mechanical/chemical cleaners? So far was best results, also brass or steel brush, depends from material of sprue (but you need to disassemble completely).
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    Re: Arburg 305 info

    Hi,

    I worked with few models with selogica controls, and all have same system in electrical cabinet. Should be same for all other machines.
    Regards,
  10. Re: General operation of Arburg Allrounder 170 CMD 145-50

    Hello,

    I worked mostly with ARBURGS with SELOGICA operating system. But i assume is more less same principle for older machines. Can you describe alarms?
    Also, manual movement is possible when...
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    Re: Rubber Matt has Hazy Areas

    Im working few years now with TPE and TPV, and your problem can be also caused by not dry or over dried material. So you can do tests with different drying parameters. Beside that adding venting to...
  12. Replies
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    7,487

    Re: Material cushion variation

    Hello,

    We did materials testing on University for chemistry and results show 1% difference in glass fibers from loot to loot.
    Did anyone else did similar tests? I also wonder if this can be...
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    1,408

    Re: noise at start of opening phase

    Hi,

    Some valves responsible for opening of tool can produce noise like you said. You can tell someone to just open and close tool, or let it run in automatic mode, and try to pinpoint location of...
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    7,487

    Re: Material cushion variation

    Switch over point change was caused by shooting throu terminals. Operator need to change volume of injected material for little and after is OK. Again in some number of cycles again switch over need...
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    5,430

    Re: Help! Witness Mark around Gate

    For example, im using one hopper with dry material and dont add any new material till is close to empty, in meanwhile on separate from that machine i have one more dryer who is drying material. When...
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    Re: Help! Witness Mark around Gate

    Hi,
    Try to run two dryers if you have in company, without adding material in one who is on machine. I did same for my problem to be sure that material is always dry.

    Nemanja.
  17. Replies
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    Re: Material cushion variation

    Hi,

    We have terminals but for now this is not problem. That was my first thinking but i checked tool and is OK. I had same idea about moisture, and now, just in case, im running two dryers. So...
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    Re: Material cushion variation

    Criss, time in process is different because of sliding table. Movement of table make this process not equal. I didnt think that this can be problem, but i will try to fix that, hold is always on...
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    Re: Material cushion variation

    Hi,
    We didn't solve anything. so far tried reverse, flat and hump profile no results on different temperature range. Here are pictures of problem and some of process data. It is always or to much or...
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    Re: Backup of machine programs

    Hi,

    We have on company server folder for each machine, and there i save back up, on CF stick I have "production" and "archive" folders so operators dont confuse what program to use and programs...
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    7,487

    Re: Material cushion variation

    For now we running standard heat profile. But I will try reverse profile, and see what will happen.
  22. Replies
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    7,487

    Re: Material cushion variation

    Hi,

    Brant, material is 100% of time dried on same conditions what manufacturer recommended.
    Chris, difference in material cushion is about 0,2-0,3cm3, i was excluding machine as problem, since i...
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    7,487

    Re: Material cushion variation

    Forgot to mention that material is PA 6.6 GF30.
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    7,487

    Material cushion variation

    Hi,

    On one of products i have problem that not in each shot is same material cushion. Anyhow i have like 100 shots OK, than few with less or more cushion than should be. On this parts i have shout...
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    Re: Injecton molding standards

    Answers to this problems, make my day.:cool:
    As i see now, only solution is to make catalog with all criteria, pictures and description of problems and what is acceptable and what is not, signed by...
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