Fabricators of Adhesive Tapes & Flexible Materials
Adhesives Research® (AR) W4001 is a 2 mil clear polyester release liner with an easy release, thermally-cured, solvent less silicone coating on one side and is printable opposite. W4001 is ideally suited for applications in medical and electronics where there can be practically no silicone transferred onto the adhesive or backside of the film. This product can be tailored to meet the needs of specific applications by request.
Unit of Measure


N/A Adhesives Research®

Brand Part Number

N/A AR W4001

Application Description

  • Suggested for use as a release liner support and protection film for non silicone PSAs and cast materials requiring easy release
  • Applications include: specialty die cut adhesives and engineered tapes, skin friendly adhesives, wound dressings, medical devices, clear PSAs, cast foams, ceramic materials, specialty labels, transferable printed inks and others
  • Compatible with clean room applications


  • Easy release from pressure-sensitive adhesives (PSAs), including acrylic, rubber, hot melt, hydrocolloid and others
  • Easy release from cast materials including foams, ceramics and dispersions
  • Stable release properties over time with consistent release force run-to-run
  • Chemistry and process assures excellent thermal stability, aging resistance and anchorage to polyester base film
  • Polyester base film offers a non-stretchable, dimensionally stable, flat, smooth surface with excellent die-cut properties
  • Stable release over time with no "lock up"
  • No loss of adhesion properties due to silicone contamination
  • Green, eco-friendly solvent less coatings
  • Suitable for indirect skin and indirect food contact, included in US FDA Drug Master File (21 CFR)
  • Clean room production with on-line defect detection
  • Narrow width slitting to 1" available

Markets Served

N/A Electronics Food & Beverage Medical

Release Liner

N/A Clear Polyester Film C1S with Solventless Silicone (2.0 mil)

Total Thickness

N/A 2.0 mil

Release Range

N/A Ranges: 5-15 Side 1: 10

N/A The physical properties listed are typical values based on PSTC, ASTM and other standard tests. This data should be used as guides only, and not as specification limits. Our recommendations for use are based on practical experience and testing. However, it is the responsibility of the user to determine the suitability of the product for his intended use. MBK Tape Solutions will not assume liability for claims beyond the replacement value of our product proved to be defective.

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