Scientific Molding/Injection Molding Solutions

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As Seen In Plastics Technology

Resin Pricing Trends

Prices for Nearly All Volume Resins Down
Flat pricing projected in fourth quarter for volume resins.

Pack and Hold Curves in Molding

Graphing Injection Pressure: What Should Pack & Hold Curves Show?
Are you sure your press is doing what you want? Visit your controller often to ensure your machines plot the pressure vs. time graph for all your processes. Here let’s focus on pack and hold.

Instilling pride of workmanship is a top goal of Natech’s in-house training programs. Here, head quality auditor Andrew Dunham examines electrical enclosure parts with operator Carla ____.

To Succeed in Manufacturing, Focus on Your People First
It’s not easy being a custom injection molder in the NYC metro area. For Natech Plastics, the key is developing employees’ skills and commitment.

How to Deal With Residual Stress in Molded Parts
Here are design, molding, and fixturing considerations to help you handle this unavoidable issue.

Vefifying Machine, Process Setpoints in Molding

How to Quickly Verify Your Machine & Process Setpoints
For a quick check of your process setup, the injection-pressure-vs.-time graph is your best tool.

How to perform experiments to determine an injection machine's Delta P

PART 2: The Importance of Consistent Fill Time
To make identical parts, you need to keep fill time constant. In part one we covered the why. Here’s the how.

To make consistent parts run to run, summer to winter, machine to machine, keep fill time consistent.

Part 1: The Importance of Consistent Fill Time
To make identical parts, you need to keep fill time constant. Here’s why.

B&B Molders Sticks to Its Core— Core Values & Core Competencies
To compete in today’s market, you need good technology, but you also need to know what you stand for and what you’re good at.

MRPC Takes ‘Holistic’ Approach To Scientific Molding
Last year this family-owned molder made a major commitment to Scientific Molding by starting a training process involving all employees.

A New Look at Evaluating Fill Times For Injection Molding
One of the important process parameters to establish and record for any injection molded part is its injection or fill time. Research research reveals the limitations of popularly taught methods of establishing this critical parameter.

Taking the Temperature of Mold Productivity
Increasing traffic in transfer tooling from molders that have shuttered operations or are unable to successfully produce parts is driving interest in a long-established but under-utilized diagnostic technique for injection molding.

John Bozzelli of Scientific Molding -- Injection Molding Solutions

Injection Molding: How to Set Second-Stage (Pack & Hold) Pressure
Most molders work with two parameters for establishing second-stage pressure. But within Scientific Molding there are actually four.

Mold flow analysis

Injection Molding: Understanding Pressure Loss In Injection Molding
One of the more prominent trends in processing is the need for higher plastic pressures to mold parts.

Figure 1

Injection Molding: Processors: Teach Part Designers The Golden Rule
Make sure the designers you work with understand that there are limits to what processing can do.

Gate Seal Data

Injection Molding: Why & How to Do Gate-Seal Experiments
Part of optimizing any molding process is determining the second-stage injection, or pack and hold, parameters.

Injection Molding: Answers to Bozzelli's Drying Quiz
Three questions about drying plastics that everyone should know how to answer.

Injection Molding: You Must Dry Hygroscopic Resins
The reason you dry certain plastics is to get the moisture out. But why does the moisture have to be taken out before processing?

40 molding machines

On-Site: An ‘Empire’ Built on Scientific Molding
A U.S. custom injection molder that’s hiring?

Figure 1

Injection Molding: The Basics of Machine Evaluation, Part III
In the last two issues, we started defining some basic tests to ensure your injection molding machine is working properly.

Photo: Powerline Mosaic control from Milacron Inc.

How to Make the Transition to Electric Presses
Electric injection machines are becoming more and more prevalent, and as they hit the shop floor, you are responsible for making them produce parts with dimensions, appearance, and performance to client specifications.

Don't Neglect Cooling... There's Money to Be Made
For most injection molding jobs, cooling is 95% of the cycle time.

Product Categories of Scientific Molding/Injection Molding Solutions

Consultants--Design, Manufacturing, Purchasing
R&D, Training Institutes
Training Programs in Plastics
Troubleshooting, Problem Solving Systems