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Exothermic Molding
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Reaction Injection Molding / Sub-Assembly Manufacturing
Reaction Injection Molding / Sub-Assembly Manufacturing

12 followers
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Exothermic Molding's posts

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On our August blog:  Reaction Injection Molding vs. Aluminum Casting. Very large, light-weight, low-cost parts without the design limitations.

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new blog post:  Reaction Injection Molding vs. Fiberglass.  Reinforced RIM can offer the same advantages with less labor for a lower unit cost.

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RIM Molding Vs. Structural Foam Molding. Are the design considerations different, or is it just a matter of cost?

Reaction Injection Molding (RIM) is a low cost tooling process geared towards high quality Polyurethane and Urethane plastic parts with Class A surfaces. RIM Tooling, especially with molds of Aluminum, is lower in cost than other plastic manufacturing methods. However, based upon a variety of raw materials, architectural detailing, painting and finishing requirements, the price per part may be slightly higher.  The diverse functions and project freedoms are why more designers and OEM’s are turning to the RIM process as a preferred solution.

Structural foam uses essentially the same process as regular Thermoplastic Injection Molding, so the design considerations of using the Reaction Injection Molding process versus structural foam are
similar, but the costs are different with added foaming agent. Thermoplastic structural foam molds require higher process pressure and cost roughly double that of RIM molds, while the structural foam
parts tend to be lower in cost. The decision here often relates to quantities.

Read more about it in our white paper, “Determining the Right Molding Process for Part Design.  How RIM Molding Advantages Compare with Traditional Production Technologies”.

Download the paper at www.exothermic.com.

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Comparing RIM with Other Molding Processes...

The chart published as part of our white paper, "Determining the Right Molding Process for Part Design" at  http://www.exothermic.com/download-process-comp.aspx, shows RIM Molding features compared  to other popular process options based on design capabilities, appropriateness for particular applications, and cost factors.

RIM Molding can offer many cost advantages and invaluable design freedom; However, it will still not be the best solution for every part or product. The ultimate process choice will vary based on a mix of factors including quantities needed, investment allowed, design features specified and lead time objectives.

Coming up in our next blogs (blog.exothermic.com), we will explore these comparisons in detail, evaluating RIM Molding characteristics against the  main competing technologies of Thermoplastic Injection Molding, Thermoforming, Structural Foam  Molding, Fiberglass Molding, Sheet Metal Fabrication, Aluminum Casting and Urethane Casting to specify if and when  RIM would be the  most effective choice.

In the meantime, we invite you to visit our website, download the paper and offer an opinion:   www.exothermic.com. 

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Molding Plastics?  Thinking Of Moving Beyond Sheet Metal?

Looking For A Process That Meets Complexity, Cost, And Timing Issues?

Here’s A Solution For Design Freedom.

The unique plastics process of Reaction Injection Molding technology, or RIM Molding, can offer great flexibility compared to traditional methods of molding parts. Many designers will find the RIM process to be a viable alternative to satisfy complexity, cost, and timing issues. (www.exothermic.com)

The Reaction Injection Molding process works by combining two liquid components that chemically react in a closed mold to form a thermoset plastic part. Unlike thermoplastic injection processes that require very high temperatures and pressures to melt and force plastic into a steel tool, RIM Molding requires significantly less energy and minimal injection force. Instead, the liquids undergo an exothermic, or heat generating, chemical reaction and polymerize inside the mold. Due to the low viscosity of the component liquids, an average mold can fill in a few second or less, at molding pressures of only 50-150 psi, and the finished part can be de-molded in as little as 60-120 seconds.

RIM Molding is optimal for flexibility, strength, surface hardness, wear resistance, sound/vibration dampening, thermal insulation, and chemical, electrical, or fire resistance. The low-pressure tools machined out of aluminum translate into low costs, shorter lead times, and with greater flexibility in design and tooling changes.

Overall, the RIM process can offer designers and engineers unprecedented design freedom to unlock their creativity, while providing unsurpassed part to part tolerance stability at comparatively low cost.

To read more about it:  http://www.exothermic.com/download-process-comp.aspx

To blog about it:  blog.exothermic.com

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The Challenge of Choosing the Right Manufacturing Process.

Determining the right process for part production is a crucial step in the ultimate success of a product.

The realities of quantities, lead times, budgets and design features have to be considered against

unknowns such as market success and future design changes. Oftentimes a particular process will solve

one problem but raise others, and can limit the designer’s freedom in some way.

In these cases, the designer may feel the need to eliminate certain design features in order to make

part production feasible within the traditional methods they are most familiar with. Creativity is often

sacrificed because alternative manufacturing processes were never considered as viable options.

Reaction Injection Molding technology, or RIM Molding, can offer great flexibility compared to traditional methods of molding parts.

 

To find out more follow our link:  www.exothermic.com

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Tell us what you think. Comment below or on our blog:  blog.exothermic.com 

Your imagination has no limits.  Freedom to design innovative plastic parts comes with RIM.

Designers are finding that Reaction Injection Molding (RIM) eliminates many issues that are drawbacks in other plastic molding techniques. The key benefits of RIM provide unprecedented freedom for cutting-edge design and engineering. 

To read more about RIM and its benefits follow this link: http://www.exothermic.com/download-white-paper.aspx

Visit our website at:  www.exothermic.com

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"If you are a manufacturer and you are still sourcing each individual component from a bill of materials, this article is worth a read. The potential savings in time and money by handing your sourcing over to a qualified operation could be the boost you need to help your business focus on what you are really good at – making your products."  Robin Lieberman (MF Supply) @ blog.exothermic.com
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Tell us what you think.  Comment below or join us on our blog:  blog.exothermic.com

Want to Save Money?  Want to Save Time?  This could be The Answer.
 “The Value of Strategically Sourced Sub-Assembly.”

Our new white paper describes how Strategic Sourcing of Value-Added Assembly provides benefits that address the ongoing need for efficiency in the manufacturing process.


Download this document from our website at www.exothermic.com.
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