Chill Rolls

Roll Technology manufactures heat transfer rolls that provide temperature control by circulating fluid under the outer shell of the roll. Cooling & heating rolls, also named chill rolls, cooling cans, cooling drums and hot oil rolls are all Heat Transfer Rolls.

The fluid essentially cools or heats the rolls to the desired temperature for the application. There are different designs and configurations of the spirals within the rolls that can be critical to optimizing the performance of the heat transfer rolls.

Most heat transfers are double shell spiral baffle rolls (DSSB)- having an inner shell with a spiral baffle wrapped around it then either shrunk or slip fitted to the outer shell. Outer shells are thru-bored to create a uniformly thick outer shell and to enhance balance. Our chill rollers can introduce fluid via mono flow design (liquid in one end and out the other end), or a dual-flow design (liquid in/ out the same end).

Cooling/ Heating Process

Liquids used to cool or heat DSSB rolls may include but are not limited to are city/plant water, glycol, filtered water and various heating oils. The heated rolls can also be heated by using a cal rod or with an intricately designed chambered construction.

When manufactured properly, heat transfer rolls will maintain the temperature consistently within 1-2 degrees Fahrenheit across the face of the roll.

Fabrication & Materials

Roll Technology supplies heat transfer rolls using various materials depending on the specific application. Flame hardened 4140 and Stainless weld overlay are commonly used in plastic sheet extrusion or extreme wear applications. Other materials used are all grades of low carbon steel, all grades of Stainless Steel and occasionally Hastelloy for severely corrosive applications.

Hard Chromium Plated Chill Rollers

Many of the chill rolls supplied by Roll Technology are Hard Chromium-plated then finished to custom surface specifications. We electro-deposit Hard Chromium directly to the base metal without an underlying substrate such as copper or nickel. This becomes a “fusion bond” instead of a “mechanical bond” as with sprayed metal coatings.

In the plating process hydrogen is naturally absorbed in the chromium deposit and often needs to be baked out for hydrogen entrapment / embrittlement release and to prevent microcracking.

Chill Roll Capabilities & Features

Roll Technology offers a range of heat transfer dimensional capabilities, including:

Up to 48’’ in diameter
200’’ in overall length
10,000lb in weight capacity

Tight Tolerance Standards

Tight tolerances are associated with heat transfer rolls when they are a part of the coating or an application system where temperature control other than ambient is critical to producing the web.

In those cases the standards that we meet are verified by electronic measurement devices including a Pro-Mic Roll Profile, Electronic Run-Out, Millionths indicators, Precision Snap Gauges from, Ultra-Sonic measuring, Electronic hardness measuring, Vernier calipers, Material Certifications, Calibrated micrometers up to 36” and Pi-Tapes up to 48”- all under controlled environmental conditions

Final Surface Finishes Available Include:

RTC’s Optical Mirror 0-1 Ra
Dull Matte finishes
Nodular Satin finishes
Commercially polished surfaces

At Roll Technology, we are committed to supplying you with the highest quality heat transfer & chill rolls, manufactured, and finished to meet the most demanding and stringent requirements. Companies worldwide depend on Roll Technology’s expertise and high-quality surfaces for their web operations.

Applications Served by a Leading Cooling Roll Manufacturer

As a cooling rool manufacturer with decades of experience, Rolltech offers precision-engineered cooling rolls for some of the most demanding production environments on the market.

Cooling rolls are essential wherever temperature control is critical to how a product functions. Common applications include plastic sheet extrusion, cast film production, and laminating lines, where the rapid cooling of hot materials is necessary to maintain flatness and dimensional stability.

In coating and converting operations, cooling rolls ensure the adhesives set properly without distortion, preventing wrinkles and other defects. They’re also used in calendaringprocesses, where materials like paper, foil, or rubber are compressed and cooled to achieve a specific thickness and finish. Additionally, in thermoforminglines, cooling rolls prepare materials for shaping by delivering consistent, even temperatures before forming.

Across all of these applications, precision temperature control through cooling rolls allows manufacturers to increase speed without ever worrying about compromising overall quality.

How Chill Rollers Improve Efficiency Across Industries

Chill rollers support a wide range of industries where precision cooling is essential to maintaining product integrity while maximizing line performance. Roll Technology also offers a wide variety of surface finishes (different roughness textures) for different Chill rolls. Chill rolls are especially valuable in operations that depend on continuous processing and exacting quality standards.

Key industries we support as a leading chill roll manufacuturer include:

Packaging: For cooling extruded films and laminates used in food, medical, and consumer goods
Medical Films: Where thermal control directly impacts clarity, strength, and regulatory compliance
Automotive Components: For forming and stabilizing interior materials, seals, and specialty films
Paper and Printing: To maintain flatness and prevent curling or distortion during high-speed runs
Flexible Electronics: For managing delicate substrates during manufacturing and lamination.

Across these industries, Roll Technology’s cooling rollers reduce waste, improve throughput, and enhance consistency, helping manufacturers stay competitive in demanding markets.

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