Hongju Blog

Get silicone rubber products insight, tips, and inspired stories from leaders on the front lines.

reaction injection molding

Reaction Injection Molding (RIM): What is It?

Reaction injection molding or RIM is an increasingly popular process that makes use of low-viscosity liquid polymers to produce plastic parts. Despite the similarities in the name and use of molds, RIM is not the same as injection molding. The RIM process can produce parts similar to injection molding, but it can also produce parts with properties that injection molding cannot attain.

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post processing steps (1)

7 Post-processing Steps in Injection Molding

Injection molding is a complex process that transforms plastic material into versatile products. It all starts in the high-pressure environment of an injection molding machine where thermoplastic is melted and injected into a precisely designed cavity. But the creation of a flawless part doesn’t end as it cools; it begins a series of critical post-processing steps. 

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compression deflection

What Is Compression Deflection?

In the intricate world of material selection for industrial applications, the term ‘compression deflection’ emerges as a cornerstone for understanding how materials behave under pressure. It’s a factor that can determine the lifespan and efficacy of a gasket, the comfort of a cushion, and even the durability of a structural component. 

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injection molding vs. thermoforming

Choosing the Right Process: Injection Molding or Thermoforming

So, you have the vision and the design of a fantastic new product that can revolutionize how people work, play, and live. And now you are wondering what manufacturing process to use to turn your brilliant idea into physical reality. That’s where you come across two popular methods such as injection molding and thermoforming.

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cycle time

5 Strategies for Reducing Cycle Time in Injection Molding 

In the injection molding industry, time is money. And you can keep hold of this money by reducing the cycle time. It might seem tricky to optimize cycle time, but learning some strategies helps you achieve this goal successfully. Cycle time optimization is essential because it reduces overall production costs while letting you stay ahead in the market.

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tire materials

Selecting Alternative Tire Materials to Address Natural Rubber Scarcity

The tire industry is the largest user of natural rubber, accounting for over 90% of total global production. Natural rubber production, on the other hand, contributes to deforestation in the Amazon basin and around the world because rubber trees require a tropical or subtropical environment with at least 47 inches of rainfall per year and no frost.

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from pc to pp

Navigating the Shift from PC to PP in Furniture Making

The furniture industry is undergoing a transformative shift from the traditional use of polycarbonate (PC) to the increasingly popular polypropylene (PP) material. This transition is not merely a change in the type of plastics used; it represents a significant step toward innovation, cost-effectiveness, and environmental sustainability.

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rubber blooming

Rubber Blooming: What It Is and How to Prevent It

Encountering a film of dry powder on a new rubber product can be a confusing experience. You may be wondering whether the product is really new or made using an inferior rubber compound. This substance is rubber bloom and while it may not be aesthetically pleasing, it is not unusual to find it even on brand new products.

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compression set

What is Compression Set in Rubber Products?

Let’s delve into the intriguing world of compression set in rubber materials, where resilience and deformation take center stage. Compression set is the most important characteristic of rubber products. And it’s vital to consider this factor when selecting rubber for a specific project. If you don’t pay attention to compression set value, you may pick a material whose application will fail over time. You don’t want that. Do you?

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can silicone be recycled

Can Silicone Be Recycled?

These days, industries have started using eco-friendly products to minimize their carbon footprints. When it comes to high-quality rubber products for medical and other industries, manufacturers prefer silicone over plastic. This rising demand for silicone makes it a significant product to look into. 

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