Exploring the differences between injection molded and roto molded cases by SKB

Protective cases play a crucial role in safeguarding valuable equipment during transportation. Two popular manufacturing methods employed in creating these cases are injection molding and roto molding. SKB offers both injection molded and roto molded cases, each with its unique features and benefits. In this article, we will delve into the distinctions between these two methods and focusing on the benefits of each variant.

SKB’s injection molded cases are renowned for their strength-to-weight ratio. Utilizing standardized molds for various sizes, the material in our injection molded case shells is 100% virgin, no-break, polypropylene co-polymer. The outcome is a lightweight case with even corners, single-wall construction, and notable toughness. Equipped with features like plastic catches, air valves and gaskets, these cases hold military certifications, ensuring resilience in challenging conditions.

On the other hand, SKB’s roto molded cases are celebrated for their enhanced toughness, making them preferable in scenarios requiring extra strength. Roto molding, or rotational molding, involves a process where a hollow mold is filled with plastic material, resulting in a double-wall construction in the corners. This design boosts durability, but at the cost of increased weight compared to injection molded cases. SKB’s roto molded cases, often customized, boast military-grade hardware, including optional different accessoires.

Understanding the manufacturing processes of rotomolding and injection molding sheds light on the distinctions between them. Rotational molding (suitable for larger, hollow products) relies on even plastic coverage achieved by rotating the mold. Conversely, injection molding, ideal for smaller, intricate products, employs high-pressure injection of molten plastic into a mold. Other features are:

Strength and weight: injection molded cases offer robustness with reduced weight, catering to diverse applications.
Enhanced toughness: roto molded cases provide additional strength, especially in corners, prioritizing durability in challenging circumstances.
Customization: SKB’s roto molded cases are often tailor-made to meet specific customer needs, allowing for personalized solutions such as extra humidity valve or different locks.
Production time: injection molding’s high-pressure process leads to faster production, while roto molding, involving mold rotation, may take longer.

The selection between injection molded and roto molded cases hinges on the unique requirements of each application. SKB’s comprehensive range ensures that customers are able to find the right protective case, combining strength, durability and customization. Whether opting for injection molded cases for their lightweight toughness or choosing roto molded cases for added strength, SKB provides quality solutions to safeguard valuable equipment during transportation.