Scientific Molding/Injection Molding Solutions

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As Seen In Plastics Technology

Fast, Simple, Low-Cost Method Unveils ‘True’ Melt Temperature
Long a mystery to injection molders, actual temperature of melt entering the mold is said to be revealed by an easy procedure that is repeatable and takes less than a minute.

Need Help with a Molding Project to Counter the Coronavirus?
Expert help at a steep discount, and the fee goes to a COVID-19 related charity.

Follow These Tips to Sanitize Machine Controller Screens & Buttons
Keeping your workers safe from the coronavirus makes it extremely important to institute a sanitizing procedure on all touch surfaces of the controller, screen and operating panel. I did some research and here’s what I found.

In Search of a Universal Setup Sheet
Duplicating a process from one injection machine to another is frustrating and time-consuming. Develop a mold-specific setup sheet that works in all kinds of presses by differentiating plastic parameters from machine parameters and duplicating those plastic conditions from machine to machine, electric or hydraulic. 

Revisiting Shot Size vs. Barrel Capacity
We’ve covered this topic before, but it’s important enough to warrant another look..

Checking and Controlling Nozzle Body Temperature
Temperature control is critical from feedthroat to nozzle tip. Yet despite advances in machinery, this continues to be an issue for molders. Here’s what to do about it.

Tension-Indicating ‘Smart’ Bolts Make Mold Mounting Safer, More Efficient
No more guessing about whether mold-mounting bolts are tightened properly, with an alternative to unreliable torque measurements.

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.

Backpressure shot density study

Injection Molding: How Backpressure Adjustments Influence Shot Size
Raising backpressure results in increasing shot size, which can cause a host of other problems.

A Simpler Way to Calculate Shot Size vs. Barrel Capacity
Let’s take another look at this seemingly dull but oh-so-crucial topic.

hydraulic vs plastic pressure

Understanding Intensification Ratio
A first step in taking the “art” out of molding.

Injection Molding: How to Get Rid of Bubbles
First find out if they are the result of trapped gas or a vacuum void. Then follow these steps to get rid of them.

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.

INJECTION MOLDING: Are Your Sprue or Parts Sticking? Here Are Some Solutions
When a sprue or part sticks, the result of trying to unstick it is often more scratches or undercuts, making the problem worse and the fix more costly. Here’s how to set up a proper procedure for this sticky wicket.

INJECTION MOLDING: Setting Mold Protection Takes Time But Saves More
Mold protection is often neglected, but it more than pays for the time and attention required.

Product Categories of Scientific Molding/Injection Molding Solutions

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