Rotational Mold Inserts / Roto Mold Inserts

If you've ever seen a Rotational Mold Machine it's a sight you wont forget because they are not only big but they look kind of like a large gyroscope.

Basically a Rotational Mold Machine operates by spinning the mold while molten plastic is moved by centrifugal force into the far reaches of the mold. Plastic kayak's, large plastic bins and storage units are examples of products formed by Rotational Molding.

Oftentimes a fastener is desired on the product to attach handles, knobs, closures etc. So like a molded in insert, the rotational mold insert is installed in place on the removable stud attached to the mold. When the finished product is removed from the mold the fastener is then in place. The dumbbell shape is common for rotational molding because it allows for a large gap for the plastic to fill in to provide excellent retention. The rotational mold process doesn't always allow for a high degree of precision regarding the wall thickness and placement of the plastic because of the use of centrifugal force to move the plastic.

Apex Fasteners provides a variety of Rotational Mold inserts in both brass and stainless steel. We begin with both hex and square bar stock to optimize retention. We can also manufacture specials to print. Please follow the link below for more specific information:
http://www.apexfasteners.com/Rotational_Mold_Inserts.htm

Molded In Inserts

Apex Fasteners features a variety of Molded In Inserts. Typical assembly requires that the insert be screwed onto a post inside the mold cavity and then plastic or in some cases metal is injected into the mold. On cooling the screw or post in the mold is removed leaving strong threads positioned precisely where they should be.

Typically Molded In Inserts are blind so that the injected plastic will not enter the threads. The inserts are manufactured out of brass or stainless steel but we can produce special inserts in unique materials on request.

All of our inserts are available in both standard and metric threads. Of note is the available thread depths and we differentiate our part numbers based on how many full threads the insert has available.

For additional information and the specific sizes we carry please look into our website: http://www.apexfasteners.com/Molded_In_Inserts.htm