Rotomolding
Rotomolding requires more than just heat and motion—it takes the right partner and the right material. At Shell Polymers, we work alongside rotational molders to deliver high-quality polyethylene designed to meet the demands of complex parts and production conditions. Whether you're forming hollow tanks, foam filled containers, or lightweight rotomolded products, our resin help support consistent results across diverse applications. When working with us, you're gaining a team that understands the details from mold wall behavior to cooling processes, and what it takes to create a cost effective, production-ready solution.
Expert insights on rotomolding & market trends
How to prepare for LLDPE rotational molding operations
Learn three best practices when it comes to LLDPE rotomolding.
Four tips to prevent rotomolding defects
Minimize expensive rotomolding defects with these expert insights.
Minimize cycle time in rotomolding operations
Discover tips to reduce cycle times and increase production.
Product summary
Product 101
Choosing the right LLDPE starts with understanding how we name our grade slates. Our system helps you match the resin’s melt index, density, and processing behavior to the needs of your rotomolded product. Use the guide below to quickly identify materials suited for optimal wall thickness, strength and performance in the rotational molding process.
Density is reflected by the first two numbers found in the product name, which is 18 in this instance. These numbers represent the last two significant digits of the density value. See examples below.
18 = 0.918 density
53 = 0.953 density
63 = 0.963 density
Our rotomolding expertise
Heather Fennell, Technical Service Engineer
As a member of the Association of Rotational Molding and Society of Plastics Engineers Rotational Molding Division, Heather has deep expertise with manufacturing start-ups and product development in the rotational molding industry.
“It’s important to understand a customer’s finished product and performance needs – that way, we can work together to develop new materials. Whether it be leveraging our (Real)ationships with Penn College to help train the industry workforce or developing resins to fit their needs, offering converters more than polyethylene is what stands us apart.”
Molding the next generation
The Shell Polymers Center of Excellence at Penn College is a space where students can come together to conduct trials, product validation and more.
Stay informed with Shell Polymers
Our monthly newsletter is tailored for plastic converters working across a wide range of applications—from injection molded parts to blow molded packaging and film. Get the latest on polyethylene products, innovations in polyethylene resin, insights on evolving plastics types, and expert Shell Polymers tips to stay competitive and informed.
Have questions about our polyethylene products? Let’s connect.
Rotomolding in action across markets
With the ability to form hollow, complex shapes and deliver consistent wall thickness, rotomolding is the go-to process for creating durable and high-performance products. From rugged outdoor furniture to detailed toys and large-scale industrial moldings, you can rely on rotational molding for cost-effective production and design flexibility across a range of demanding markets.
Outdoor living
A popular choice for outdoor applications, HDPE and LLDPE ensures patio furniture can withstand the elements.
Toys
LLDPE and HDPE helps provides toys with flexibility and durability—keeping them safe from little hands that might break them.