MJ

Recent Actions

• Commented on Explaining Melt Flow Index
  Hello Andy. Does any system exist that adjusts the process according to incoming measurements of material from lot to lot? Milan...
• Commented on Using Hold Pressure Velocity
  Thanks Andy. Best Regards Milan...
• Commented on Using Hold Pressure Velocity
  Hello Andy. What in case, when I can't turn off hold pressure velocity. How big value I should adjust? Best Regards Milan...
• Commented on Using Hold Pressure Velocity
  Hello Andy. And when I should adjust hold pressure velocity? For what is good this feature? For DIII molding? Milan...
• Commented on Energy Savings for Electric Molding Machines
  Hello Andy. I heard, that all-electric machine save energy during time when mold is closed, cause they use toggle clamp system. But hydraulic machines have to keep clamping force with hydraulic pump. Milan...
• Commented on Selecting A Melt Temperature Probe
  Andy, What is the recommended maximum response time of probe, if I don't want to preheat it? Milan...
• Commented on Compensating for Barrel Residence Time...
  Hello Arturo. If you want to do machine evaluation with E-dart, then you need to put sensors in mold where your machine and use 20-80% stroke capacity. When you want to do speed linearity test, you need to give your...
• Commented on The Importance of Housekeeping
  Also customer is more satisfied during an audit when the shop floor is clean. MJ...
• Commented on Rules for a DIII Process
  Thanks Andy for advice. MJ...
• Commented on Max Velocity Settings for Thin Wall Molding
  Hello Jean Francois. I'm recomending to do In-mold rheology test, but also Injection speed linearity test.If you compare these test you will see, how your machine is able to control injection speed. MJ...
• Commented on Check Ring Drift vs. Repeatability
  Hello Jim. I'm doing let me say "static" check ring test. I put plate in front of nozzle, move nozzle to touch the plate. Then I adjust 600 bar of holding pressure, and if screw will not move more than...
• Commented on The 80-20 Rule For Available Shot Size
  Hello Andy. We running products, where I have shot size less than 20% of machine availability. Every set-up I measured different shot weight (without Hold pressure). Is it possible, that so small amount of material can cause of my problem?...
• Commented on The 80-20 Rule For Available Shot Size
  Hello Andy. Shot size meaning: transfer position+amount of material+decompression? MJ...
• Commented on Weld Lines vs. Meld Lines
  Andy, When weld lines occurs, which injection parameters are most helpful. Thanks MJ...
• Commented on 1st to 2nd Stage Response Time
  Andy, Which of your courses is best if I want evaluate my injection machine? MJ...
• Commented on Interpreting Viscosity Curves
  thanks Andy. MJ...
• Commented on Interpreting Viscosity Curves
  Andy. Thanks for explanation, but I have next question. I know, how to measure melt temperature, but you said in some seminar, that measuring melt temperature depends on: thickness of probe, amount and type of material. Where I can find...
• Commented on Interpreting Viscosity Curves
  Andy, If I receive same type of material with different viscosity(variation during making material in company material supplier), will fast injection (chosen according rheology test) decrease this material variation? MJ...
• Commented on Buffered Pressure Limit Settings
  thanks Andy. MJ...
• Commented on Buffered Pressure Limit Settings
  Andy, In this case, when I want to measure relative viscosity during production using EDart, I have to adjust maximum of injection pressure (during whole production) if I want to see viscosity behaviour of material. MJ...
• Commented on Buffered Pressure Limit Settings
  Hello Andy. When machine is cutting actual pressure, can I believe the data obtained during a rheology test? I think, that in this case, I can't use machine like a rheometer. MJ...
• Commented on Venting Issues
  thanks Andy MJ...
• Commented on Venting Issues
  Hello Andy. You wrote: Each material has design guidelines for vent depth which are typically very helpful- where I could find these guidlines? Thanks MJ...
• Favorited Gates... To Open, or Not To Open on Plastics Training & Technology Blog
• Commented on Gates... To Open, or Not To Open
  Hello Andy. I can't leave another comment because you wrote everything, what I would do :) MJ...
• Commented on Gates... To Open, or Not To Open
  Hi. I recommend to check check ring and non return valve for leakage. MJ...
• Commented on Crystallinity In Layman's Terms
  good comment and explanation MJ...
• Commented on Cushion Monitoring: Variation & Setting Limits
  Hello Jim. If you have problem with variance of cushion or with pressure at tranfer, you should try to do decompressions analysis. Maybe distance for check ring seating is small (I mean decompression). It helped me with Celanex 2002. MJ...
• Commented on Dynamic Check Ring Repeatability Test
  Thanks Andy for your comments. I like your website and webinars also, it helps me very much. MJ...
• Commented on Dynamic Check Ring Repeatability Test
  Hello Andy. Thanks for comment. I used screw position for tranfer, but actual displayed screw position was different from shot to shot 0,15ccm. If I produced small parts, variation was 7% of weight what is too much for me. MJ...