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The Key to Buying Rubber Products in Different Sizes

Buying rubber products in different sizes can be challenging if you’re sourcing them through a company with limited molding capabilities.

What you need to look for is a rubber manufacturer that offers compression, extrusion, and injection molding processes. Having these options to choose from will allow you to get the precise sizes and quantities you need without having to seek out multiple vendors.

Don’t understand the differences between these molding processes? Don’t worry. Let’s break it down for you.

Rubber compression molding

Compression molding is most often used for low volume, large parts. It’s one of the oldest methods for polymer processing, but has been around this long for a reason. The low cost and waste production of compression molding makes it a favorite for customers seeking intricate, larger parts.

Rubber injection molding

This type of molding is one of the most cost-effective ways to manufacture custom molded rubber, and is most often associated with thermoplastics. It works by forcing heated rubber into a high-pressure mold cavity.

If you’ve heard of or utilized any of these processes before, it’s most likely this one. Injection molding is usually the best choice for parts that are needed in high volumes with high levels of precision. 

Rubber extrusion molding

Extrusion molding is used to manufacture products like pipes and hoses that have a cross-sectional, fixed profile. This type of molding utilizes pressure to push a rubber compound or mixed elastomer through a die that’s shaped like the end product (think of squeezing out toothpaste).

There are two forms of extrusion:

Hot feed– This method is rarely used anymore, and works by preheating the rubber compound before processing it.

Cold feed– This method feeds the rubber compound into the extruder at room temperature.

At Mark Tool & Rubber Co, Inc., we utilize all three of these rubber molding processes. Regardless of the size, quantity, or level of precision that you need, our highly experienced professionals will get the job done accurately and on time. Contact us today to request a quote!

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