What is a Release Liner?
A release liner is a carrier material—typically paper or film—coated with a release agent (usually silicone) that carriers and protects sticky substances until they are ready to be ‘released’ for their next intended purpose.
The purpose of a release liner is to protect sticky substances, often adhesives, from contamination, moisture, and premature bonding while allowing easy release upon application.
Release liners are composed of a substrate (base material) and a coating. Common substrates include glassine paper, super calendered kraft paper, clay coated paper or polymers like PET, PP, HDPE, and LDPE. The substrate has a release coating, primarily silicone, which ensures a smooth release from adhesive surfaces. Release liners can have non-silicone release coatings, or no coating at all. Release coatings can be on one side the release liner (S1S) or on both sides of the substrate (S2S). Release liners are available in a wide variety of thicknesses and strengths.
Fox River Associates is your release liner expert. Use the form on this page or call us now at 1-800-647-6579.
What Applications Are Release Liners Used for?
Release liners are used across many industries:
Industrial
- Noise-Vibration-Harshness
- Gaskets and sealants
- Die-cut foam and rubber adhesives
- Kiss-cut components for electronics and appliances
Building and Construction
- anti-skid/surface
- soundproofing
- Underlayment
- Weather barriers – ice and water
- Insulation membranes
- Window seam/flashing tapes
Medical
- Wound care dressings
- Transdermal patches
- Diagnostic devices
- Biomedical assemblies
- Electrode and sensor applications
- Medical tapes and bandages
Tape
- Foam tapes for sealing and insulation
- Protective films
- Double sided adhesive tapes
- Masking tapes for automotive and construction
Composites
- Prepreg manufacturing
- Composite panel production
- Resin filming
Automotive
- Interior and exterior adhesive trims
- Gaset and weatherstrip applications
- Heat-resistant adhesives for under-the-hood components
With a wide breadth of film and paper release liners available, Fox River Associates serves all today’s existing and emerging market applications. Our team is ready to work with you. Use the form on this page or call us now at 1-800-647-6579.
What types of films are available for release liners?
Release liners are constructed of several base film substrates – each with its own performance characteristics. Release liners are not one-size-fits-all products. Identifying what film substrate is most appropriate for your release liner application is best determined by working with an experienced Fox River Associates representative who will work with you to understand your specific needs.
Fox River Associates offers a full breadth of film release liner substrates, including Low Density Polyethylene (LDPE), High Density Polyethylene (HDPE), Polyester (PET), Polypropylene (PP), and Specialty Films like Flat LDPE (no release coating) and Embossed LDPE (no release coating).
Film release liners from Fox River Associates are available coated on one side with release coating or on two sides. Two sided release coatings can be equal or differential.
Medical Release Liners: Film release liners used in medical applications include HDPE, LDPE, PET, PP, and Flat LDPE (no silicone).
Tape Release Liners: Film release liners used in tape applications include HDPE, LDPE, PET, PP, Flat LDEP (no silicone) and Embossed LDPE.
Composite and Aerospace Release Liners: Film release liners used in composite and aerospace applications include LDPE, PET, Flat LDPE (no silicone), and Embossed LDPE (no silicone).
Building and Construction Release Liners: Film release liners used in building and construction applications include HDPE, LDPE, PET, and PP.
Industrial Release Liners: Film release liners used in industrial applications include HDPE, LDPE, PET, PP, Flat LDPE (no silicone), and Embossed LDPE.
To learn more details about market applications for film release liners and what the optimal performing film release liner is for your needs, contact the experienced team at Fox River Associates today. Call 1-800-647-6579 or use the form on this page and we will get back to you with more information. Our team is ready to work with you.
What Types of Papers Are Available for Release Liners?
Release liners are constructed of several base paper substrates – each with its own performance characteristics. Release liners are not one-size-fits-all products. Identifying what paper substrate is most appropriate for your release liner application is best determined by working with an experienced Fox River Associates representative who will work with you to understand your specific needs.
Fox River Associates offers a full breadth of paper release liner substrates.
Direct Coated Papers – Glassine and Super Calendared Kraft (SCK). These papers are high in strength and can be coated on one side or on two sides for versatility in many market applications. These papers can be coated with a differential release, resulting in a “tight” and “easy” release on the same substrate. These are mainstay substrates for paper release liners.
Clay Coated Kraft – these kraft papers have an extra layer of clay coating delivering excellent layflat and dimensional stability. These paper release liners are less reactive to moisture and temperature than other available substrates. The consistent surface and smoothness of these clay coated papers make them excellent base substrates for release coating for paper release liners.
Poly Coated Kraft – the poly coating provides enhanced moisture resistance. These liners are durable and highly resistant to tearing. They can also provide a very smooth surface to the coated adhesive
Specialty papers: machine finished, machine glazed, and machine calendared papers are specialty substrates that may be found in paper release liner applications that require performance characteristics outside the standard papers used for release liners.
Ready to learn more about paper release liner substrates and what is right for your application? The experienced team at Fox River Associates is ready to work with you. Use the form on this page or call us now at 1-800-647-6579.
Which Paper Substrate Is Right for My Market Application?
The vast variety of paper substrates available for paper release liners ensures that each application can have the most appropriate release liner for its needs. Working with an experienced representative from Fox River Associates, you can identify the optimum designed release liner for your processing, manufacturing, and final product requirements. There are some general guidelines for understanding common paper release liners for market and application.
Medical: Paper release liners used in medical applications include direct coated glassine and SCK release liners, clay coated release liners and polycoated kraft release liners.
Tapes: Paper release liners used in tape applications include direct coated glassine and SCK release liners, clay coated papers, and polycoated kraft release liners.
Composite and Aerospace: Paper release liners used in composite and aerospace applications include direct coated glassine and SCK release liners, clay coated papers and limited use polycoated kraft release liners.
Building and Construction: Paper release liners used in building and construction applications are direct coated glassine and SCK release liners.
Industrial: Paper release liners used in industrial applications include direct coated glassine and SCK release liners, clay coated papers and polycoated kraft release liners.
To learn more details about market applications for paper release liners and what the most appropriate paper release liner is for your needs, contact the experienced team at Fox River Associates today. Call 1-800-647-6579 or use the form on this page. Our team is ready to work with you.