What is rotational molding?Rotational molding also uses a mold tool, consisting of a core side and a cavity side. However, the manufacturing process is quite different from injection molding. The plastic powder is first poured into the cavity of the mold, and then the mold is placed in an oven. While being heated, the mold …
To determine how much force the platen must hold, the process engineer will calculate using the following parameters: The area of the finished part’s footprint.The flow length, which is the distance from the gate of the mold to the furthest edge of the part.The average wall thickness of the part.The number of cavities in the …
Even when all of the machine parameters have been set up to their optimal level and the parts are coming out beautifully, that doesn’t quite mean the operator can just walk away from the machine. There are still some things that can happen which must be monitored at all times. For one, machines are subject …
How does pressure loss affect plastic injection molding Read More »
When considering plastic injection molding for a project, product designers and engineers should consider not only what thermoforming or thermoplastic resin to use but also the choice of metal for the injection mold tool. The choice of tooling raw material influences production lead times, cycle times, finished part quality and cost, among other things. To …
How To Choose The Right Material For Plastic Injection Mold Read More »
Every day around the world in hospitals and clinics, research laboratories, and universities, numerous plastic products are used for medical parts, devices, appliances, and support equipment. The variety of applications for injection-molded devices is almost limitless. This is due to the fact that plastic injection molding is perfect for making high volumes of identical, close-tolerance …
4 Benefits of Plastic Injection Molding for Medical Devices Read More »
It’s not possible to cover every tooling design decision that a product developer needs to make in partnership with their manufacturing provider. However, it’s possible to narrow these choices down to a few discrete categories that apply to all tools, regardless of their function. Of course, not every type of tooling raw material will be …
Overmolding is a special form of plastic injection molding. Unlike conventional molding, where a finished product is made in one cycle, overmolding requires at least one additional injection cycle using a dissimilar material. This method is also known as 2K overmolding, two-shot molding, or even multiple material molding. Overmolding starts with a base substrate, on …
Witness marks are a function of the injection molding process and these molding defects cannot be completely eliminated. Their effect on the look and performance of the part can be controlled by using good design practices, including the following: Disguise the location of the witness within some other feature of the partUse a submarine gate …
Multiple cavity tooling is an excellent solution for the right project. Here are some of the advantages. Positives of Using Multi Cavity Tooling More parts per cycle, so suitable for larger ordersLower cost per piece that a single cavity toolBetter color consistency between partsThere are, as always, some compromises that product developers should be aware …
Advantages and Disadvantages of Multi Cavity Tooling Read More »
Although every product is unique, the following design tips represent the ‘best practices’ that have been derived from decades of practical experience within the plastic injection molding industry. Product developers are well-advised to consider these guidelines for the following common design features. A boss is a relatively large mass of plastic resin. Whenever there is …
Design for manufacturing guidelines for plastic injection molding Read More »
