Using Liquid Silicone Injection Molding for Security Systems

There are lots of uses for rubber keypads. One of them is security system controls. Whether commercial or residential, there are a number of factors that these should be used instead of plastic or touchscreen models. While there are 4 different types of rubber molding processes, liquid silicone injection molding is the most successful way to make long-lasting rubber keypads.


Use of backlighting on the console make sure the user can find the numbers in the dark. A backlit rubber keypad, this means that each key is illuminated, making it simpler to view. Using plastic buttons or a glass touchscreen get rid of the uncertainty. Pressing the right buttons when setting or disabling an alert system is important. When the wrong key is hit, this could cause a false alarm or fail to arm the system.


Durable printing is vital for rubber keypads. When numbers wear off after repeated use, any person coming to the office or home with nefarious intentions can simply determine the possible mixtures of the security code by examining the buttons. Liquid silicone injection molding with laser printing number on the keypads exteriors make sure it will not wear off to give away the code. Another choice is to use reverse laser printing on the underside of the key. The number is still perfectly visible, but the printing does not wear.

Silicone injection molding
Silicone injection molding

Touch keys

When dressing the different keys on a liquid silicone injection molding rubber keypad, the key has 2 objectives. There are various depths that a key must travel in order to serve its objective. The shape, size, and depth are determined in the design phase. Most vitally, each key must make contact with the security alarm panel device below to activate the right response. Secondly, the user should feel some give when they press the key to stop confusion. Imagine pressing the same button twice when attempting to add a code rightly. Improper code entry cause the alarm to tour. Failure to set the arm could make the chance of a security breach.


The liquid silicone injection molding process provides durability where plastic and other surfaces do not. Hard plastic can become extremely brittle in high temperatures. Liquid silicone injection molding is more durable in great temperatures, which means that the rubber keypads will last longer and can withstand more rugged situations.

Stack molding for plastic injection molding

Stack molds are some of the remarkable production tools to be found anywhere. The craftsmanship and engineering that goes into a stock mold is really  marvel.

For the layman, who has never built a plastic injection mold, it might look like a fancy, huge piece machinery that generates plastic widgets. Yet, from the perspective of an plastic mold maker, stack molds represent an extremely high level of expertise.

What is a stack mold?

There are different variations on the theme of stack molds, but some general specs are:

  • Built for extremely high production runs
  • Have a one cavity and different cores
  • Use indexable cores to injection and mold multi-materials
  • Have the capability to do different operations in the molding cycle

Basically, a stack mold has a stationary “A” half, and at least 2 “B” or moveable halves. They are alike to the rotary molds that have been in use for many years, but are vertical rather than horizontal.

This means that the portable cores rotate about a vertical axis, rather than a horizontal. Also, the stack mold is extremely compact and has a much little footprint.

Plastic molding parts
Plastic molding parts

What are the applications of stack molds?

Because they are top production products, the general applications are for consumables and cosmetics, such as toothpaste or deodorant containers. Medical and automotive products are normally produced using stack molds.

More and more items are being designed to use soft overmolding, such as hairbrushes or toothbrushes. These are best applications for stack molding. Because the part is plastic molding parts, chilled, overmolded and ejected in sequential cycles, production costs can be reduced.

What are the advantages of stack molding?

Stack molds are accessible in different configurations to meet a big range of molding demands and Cosmetics injection molding. Stack molding provides an economical and perfect manufacturing solution for the production of multiple plastic molding parts. Injection molding china firms are forever looking for more perfect way of molding and for the right.

A few of the advantages of the stack molding process contain: increased output efficiency

  • Reduces number of machines needed
  • Lower machine size need Vs. multi-cavity single face molds
  • Generate twice as many parts without rising press size or clamp tonnage, which greatly decreases part costs
  • Set-up time and run-time cost are divided by all the parts generated
  • Producing the back and front parts of a key fob at the same time is a best example of an application of stack molding
  • Mold ejection functions are self-contained, no extra labor or steps needed.

Looking for injection molding China partner to support your stack mold project? Contact us to get price.