Stack Molding For Plastic Injection Molding

Stack Molding For Plastic Injection Molding
Stack molds are the most amazing production tools to be found anywhere. The engineering and craftsmanship which goes in a stack mold is a marvel.
Coto Mold
To the layman, who may never have built a plastic injection mold, it could look like a major, fancy little bit of machinery who makes plastic widgets. Yet, from your outlook during an plastics mold maker, stack molds represent a really advanced of expert knowledge.

What is a stack mold?

You'll find so many variations on the party's theme of stack molds, however, many common features are:

Built for quite high production runs
Have a single cavity and multiple cores
Use indexable cores to injection mold multi-materials
Have the opportunity to do multiple operations from the molding cycle

Basically, a stack mold has a stationary "A" half, and a minimum of two "B", or moveable halves. They're like the rotary molds that have been available for countless years, but are vertical rather than horizontal.

Which means that the moveable cores rotate in regards to a vertical axis, rather than horizontal. Also, the stack mold is very compact and contains a much smaller footprint.

Are stack molds expensive?

Yes, stack molds are very expensive. For this reason an increased volume must justify their expense. However, specifically in medical or cosmetic molding, the ROI is quickly realized.

Considering the considerable amount of engineering and mold making involved, the cost is understandable. Designing and building a stack mold is not for starters, or mold makers who take shortcuts! Plastic injection molding is not easy, and stack molding is while on an entirely new level.

Which are the applications for stack molds?

Since they're for top production products, the regular applications are suitable for cosmetics and consumables, for example deodorant or toothpaste containers. Automotive and medical products are also frequently produced using stack molds.

More and more merchandise is being desinged to use soft overmolding, like toothbrushes or hairbrushes. They're perfect applications for stack molding.Since the part is injection molded, ovemolded, cooled and ejected in sequential cycles, production costs can be minimized.

What are important things about stack molding?

Stack molds can be found in numerous configurations to satisfy various molding demands. Stack molding gives an economical and efficient manufacturing solution for your creation of multiple plastic parts. Injection molding organizations are always trying to find extremely effective way of molding, and for the right

A few of the benefits of the stack molding process include: Increased output efficiency (productivity)

Decreases number of machines required

Lower machine size requirement vs.. multi-cavity single face molds

Produce twice as many parts without increasing press size or clamp tonnage, which greatly reduces part costs

Set-up some time to run-time costs are divided by all of the parts produced

Producing the back and front parts of an integral fob at the same time is a useful one associated with an application for stack molding

Mold ejection functions are self-contained, no additional labor or steps required

Coto Mold is a plastic injection mold making company located in Shenzhen of China that very close to Hong Kong. Today we have 10+ years experience in plastic mold making industry and we have strong technical background including our sales staff. More than 90% molds we made are for overseas customers, the mold including 2K mold, over mold, insert mold, hot runner mold etc., the products are for different fields like Automotive , Home appliance, Electrical, Medical, Packaging and so on.