Silicone Seal Heads
Learn more about our seal heads, benefits and options.
Superior Seals for Rigid Packaging Applications
Many heat seal users know that quality seals require a set of hard (metal) and compliant (silicone) tools coming together on either side of your cup, tray, or bowl. Often in rigid packaging applications, silicone is used on the bottom of the sandwich as the part holding fixture used in conjunction with a metal seal head on top.
But did you know…
You can flip that process upside down!
Silicone Heads for Superior Seals
In instances where satisfactory seals have not been achieved with metal heads and silicone holding fixtures or instances where part or machine geometry complicates the use of silicone holding fixtures – Silicone Seal Heads can replace metal heads with a number of key performance advantages.
Thermally conductive silicone materials:
Benefits
Silicone Seal Heads, used as part of a tooling set along with metal part holding fixtures, provide superior heat sealing performance – reduced leakers!
Our Silicone Seal Heads provide a wide variety of benefits, including:
| Repeatability | Highly repeatable Silicone Seal Heads, Custom molding utilizing CNC engraved tools. |
| Fast Changeovers | Magnetic, quick-change mounting formats, Up to 90 x faster silicone head changeover speeds. |
| Enhanced Accuracy | Up to 50% improvement in mounting accuracy with magnetic mounting system. |
| Customized | Our team designs patterns to optimize results for each unique application. Patterns are molded directly onto Silicone Seal Heads in multiple reliefs and heights. |
| Thermal Performance | Heat tolerant up to 550° F, Thermally Conductive, Thermosil® formulation offers very fast heat recovery. |
| Silicone-to-Metal Bond | Proprietary Process, Unmatched adhesion, No need for adhesives. |
| Teflon-to-Metal Bond | Alternative to wrapping tools with Teflon tape, Lasts 7x longer, Reduces changeover time while enhancing seal integrity. |
Options
At United Silicone, each Silicone Seal Head is carefully crafted to meet the unique needs of each application. We produce flat, contoured and multi-level Silicone Seal heads in both disposable and re-coatable formats for use in our system or competitor systems. We offer three different silicone formulations (in 40-90 durometer Shore A) each specially designed to withstand the temperatures and pressures of the heat seal process.
Specifications
Character Height (A)
- .035″ and .065″ relief, standard
- Custom reliefs available
Silicone Thickness (B)
- 3/32″ is used for .035″ seal heads
- 1/8″ is used for .065″ seal heads
- Custom thickness available
Aluminum Thickness (C)
- 1/8″ is standard -1/32″, 1/16″, 1/4″ available
- Deadsoft – Aluminum, easily formed
