Exploring the: Know How - Injection Molding Zone
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- Should You Profile Injection Velocity?
- If you can get by with one velocity, use only one, because fill time is easier to reproduce, and it is easier to set up the process.
Columns Published: 6/26/2012
- Understanding Polymer Flow: Interpreting the Viscosity Curve
- Take the time to do the viscosity curve on new molds. You will learn more in that hour than many learn in years about the process for this tool.
Columns Published: 5/29/2012
- All About ‘Cushion’
- What it means. Why it's important.
Columns Published: 4/26/2012
- Getting Good Data from DOE
- How do you know what process variables control a part’s dimensions or other properties? A properly conducted DOE is the answer—but incorrect procedure will yield useless data.
Columns Published: 3/26/2012
- Improve Profits by Graphing Injection Pressure
- Graphing is a powerful aid in optimizing the process and troubleshooting both process and machine issues.
Columns Published: 2/21/2012
- What to Calibrate on Your Press
- There are different approaches to meeting the goal of making parts identically. At the heart of all them is the process or the machine setup sheet. My bet would be you cannot find two that are identical.
Columns Published: 1/28/2012
- Why Multi-Cavity Molds Fill Unevenly
- Balanced filling is critical for making identical parts, achieving high CPKs, holding tight tolerances, and getting “good” data from design of experiments.
Columns Published: 12/27/2011
- What Percentage of Barrel Capacity Should Your Shot Size Be?
- The answer combines both experience and science, and it may be one of those molding details that gets overlooked but could be stealing a chunk of your profits.
Columns Published: 11/28/2011
- Plasticating Rates: Your Profits Are at Stake
- To get the best cycle time you need the right machine, and few molders take the time to specify this critical component of the process.
Columns Published: 10/25/2011
- Calculate Shot Size Vs. Barrel Capacity
- It may seem like a dull topic, but it will overcome the emotional experience that follows when you put a new mold into a machine and you find out there is not enough barrel capacity to make a full shot.
Columns Published: 9/30/2011
