Custom Silicone Sheeting and Film

Trelleborg’s silicone sheeting engineers work closely with customers to develop individualized solutions using LSR, HCR, dispersions, gels and other materials to meet all application requirements. Our range of sheeting capabilities for custom solutions includes:

  • Silicone Sheet Production
  • Standard Silicone Sheeting
  • Fabric-Reinforced Silicone Sheeting
  • Micro Silicone Film
  • Gel Silicone Sheeting
  • Unvulcanized HCR Silicone Sheeting
  • Vulcanized Silicone Sheeting
  • Knife Coating
  • Calendared Silicone Sheeting
  • Other Sheeting Material Options
    • EPDM Sheet Production
    • PTFE Sheet Production
  • Post-Processing Capabilities
    • Punching
    • Cutting

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Learn more about our range of elastomer sheeting solutions designed for Healthcare & Medical applications.

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LSR

Silicone

Silicone is extremely versatile and delivers unmatched biocamptibility, making ideal for use in a broad range of applications.

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Silicone Sheeting Manufacturing Processes

We produce sheeting using two different methods:

Knife Coating

Our knife coating equipment and processes produce sheeting and films from different silicone materials including liquid silicone rubber (LSR), dispersions         and gels.

 

Knife Coating Process

 

  1. A vacuum-assist system secures a plastic film against a precisely levelled    carrier belt
  2. Silicone material is pumped at a precise rate behind a vertical blade
  3. As the film advances, the blade spreads the silicone into a film of the              desired thickness
  4. The carrier plastic and silicone advance through a hot air vulcanizing (HAV) chamber where the rubber is vulcanized
  5. A protective top sheet is automatically and continuously applied to the upper surface of the cured film
  6. The cured sheeting is spooled as finished product
  7. Secondary processes such as die cutting, kitting or sub-assembly can then be applied to the silicone sheets

 

Benefits and Capabilites

 

  • Entirely closed-loop process significantly reduces the risk of particulate contamination due to environmental exposure
  • Continuous manufacturing process capable of producing larger batch sizes at lower cost
  • Sheeting thickness is more precise, accurate, reproducible, and capable of producing silicone film as thin as 0.025mm / 0.00098 inches

 

Our LSR knife coated sheeting is available with the following properties:

 

HCR Sheeting Extrusion & Calendering

High consistency rubber (HCR) is formed into various types of sheeting using either a calendering or extrusion process, which can produce a range of sheeting products including combinations of vulcanized, unvulcanized, reinforced or non-reinforced products. Calendered or extruded sheeting may be pigmented and a number of surface finishes are possible.  The material can also be produced to tightly toleranced widths and shipped on spools or packages of cut lengths or die cut to a specific geometry.

 

Calendering Process

  1. Silicone is fed through multiple rollers to produce a film of uniform thickness
  2. The film is transferred onto a carrier sheet and may be cured or left uncured

 

Extruded Sheeting Process

  1. Silicone is fed into an extruder and through tooling engineered for a precise thickness and width.
  2. The film is then cured in a hot air vulcanizing oven and spooled with the appropriate carrier and if necessary another top layer of protective film.

 

Our HCR calendared sheeting is available with the following properties: