Creating and Managing Culture Change Whether it's a fully-fledged lean manufacturing shift or just a stronger sense of community in the break room, companies are becoming more concerned about creating a sense of culture in the work place, especially when change is...
In this article we will get into issues with tool design with shut-offs, parting line maintenance, and where the machine can contribute to flash. First, I would like to briefly go over how to define flash. Flash at times can be difficult to eliminate, and many will give up and accept this defect. Flash also can be miss-diagnosed at times with miss-matched parting lines or feather flash. I have seen miss-match called flash many times, but if it is flash you can see or feel it from both sides, miss-match will only be seen or felt from one side. “Feather flash” can also be incorrectly diagnosed as flash. Feather Flash is little stingy pieces of plastic along the edge of a part on the main parting line. This is caused from lack of clamp force and the mold blowing open under injection pressure, allowing the plastic to flow between the shut-offs. When the plastic pressure reduces, the clamp tonnage compresses the plastic and creates little stings.
I hope you found the first article on flash free molding interesting. [Read Flash Free Molding Part 1.] I covered cavity pressure versus clamp pressure and will talk tool deflection in this article. Tool design and construction can be a contributor to flash issues....
If you're looking for an injection molder for your project, it is important you find one that suits your needs and offers you the best possible injection molding service. In all probability, you will continue using the same molder for all your projects, as long as you...
Plastic injection molding pressures are classified based on the clamping pressure that the molding presses exert. This is the reason why it's important to check the size of the press, which is often referred to as the tonnage. The clamping pressure exerted by the...
Manufacturing trends in the United States look very promising. In the last few months, the manufacturing sector in the country has seen a higher growth than what the sector experienced in the last couple of years. This truly is an optimistic sign, as it is an...
Cold Runner Vs. Hot Runner Molding Systems Why should you choose a hot-runner mold system over a cold-runner mold system (or vice versa)? Each type of molding system has unique features that help determine exactly which one is best for you. Cold-Runner Mold Systems...
From Kaysun Corporation, a great piece on the injection molding process: Injection molding is a dynamic, complex process that requires testing and usually some adjustments to get it to perfection. It's not an exact science, but some manufacturers focus on the...
When you're buying molded parts made from different types of plastics, it's crucial you know about some of parts defects that can lower the quality of the molded plastic parts. If you know the sources of the defects and flaws they can cause, you can work in...
"In a manufacturing firm, revenue is generated and costs incurred through the performance of activities." This article from Industry Week argues that it's important to analyze the cost of each activity - to trace the cost of specific activities in the value stream....
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