Download PDF of this page  Print this page

Silicone Release Paper & Liner

Silicone release liner, release liner, paper release liner, non-silicone coated release linerClick to Enlarge
Silicone Release Liner being removed

Silicone release paper is more of a general category with so many different types of paper that can be silicone coated. Used extensively in the pressure-sensitive adhesives industry. Silicone release paper plays a vital role of carrying the pressure-sensitive-adhesive (PSA) labels and ensures perfect tack and easy peel-off. In its simplest form, silicone release liner is made up of 3 separate parts all acting together. First layer is the base paper or substrate, often this is a Kraft base paper. Second is the barrier coating and third is the silicone.

We thrive at the challenge of finding the “right” combination of materials for your next project. With Silicone Release Paper and Liner, we have so many different choices to help you solve these decisions, all while giving you the option of having us hold Inventory for you. Below are some of our offerings and where they are commonly used. All though the list is not all inclusive so please contact us for just a quick question or to discuss your new project - we are listening!!

Click here and we can provide a customized quote for you on this material for your project as well.

Why The Release?

We at Cheever deal extensively with our customers to help them select the correct substrate and then help them define the adhesive, release level, caliper, flexibility, color - all the key elements that go into their release liner project. We can provide from a very easy release of 30 (R19c test method) to a very tight release of 500. Often you will need a different release level on each side, referred to as a differential release paper.  Often this process is trial and error and sometime a lot of science. These combinations of adhesives pairing with a substrate and then being coated with silicone has helped to define companies. With just that right combination, a company can become an industry leader.

Most Popular Paper Grades

Super Calendered Kraft (SCK)
This type of paper is highly used as a release liner due to its hardness, smoothness, caliper consistency. The properties are achieved by taking Kraft paper it running it through a Calendar stack which produces a very lay flat paper that is very dense with a closed surface.
Clay Coated
Is a Kraft paper that has a coating of clay that is then coated with silicone. The advantage is with the clay coating it can withstand high temperatures and has good dimensional stability.
Has a high degree of density (highly smooth) and offers an optimal surface for silicone coating. Also is very good for die cutting due to its very narrow caliper tolerances.

Application/Industry Area

Label Stock
The label industry is one of the largest users of silicone release paper. It is used to protect the print on the face-stock from the adhesive on a label. Release liner labels are used in point-of-sale labeling, primary labels for the food and cosmetics industries and business system labels. Other uses are for functional and security labels on machinery and industry equipment.
Building/Roofing
When used in a roofing application they are chosen for the cold self-adhesive membranes as well as self adhesive under layers. The liner protects the adhesive surface and ensures the final product can be rewound after production. A release line is also used in self-adhesive shingles.
Shipping Envelopes
Document pouches used for overnight shipping will have a peel & seal closure strip. The release liner is part of this system, where it is removed to expose the adhesive before pressing closed. Used in food bags, business forms, paper envelopes and document pouches.
Fiber Composites
Composite material is used in wind energy, automotive and aerospace to name a few. The release liner is used as a process paper or film to prevent material from sticking together during the impregnation process.
Medical
The release liner is being used in almost every area in the medical field. Typical used in body electrodes, adhesive bandages, therapeutic patches, wound dressings and transdermal deliver systems.  In the example of ECG/grounding pads, the release liner is used to back the adhesive. Where these products are used directly in contact with the skin, a high quality release matched to the correct adhesive must be used and be able to be made at a consistent level. We have been working with manufactures in these fields helping them to produce high-quality release liners as well as service solutions around these products such as, narrow split, coils, double packaging, plastic cores or bio burden testing. Other uses of release liner are, wound care, PU casting liner, surgical drapes.
Hygiene
Hygiene applications utilizing a release liner are primarily used for self-adhesive diaper frontal tapes and feminine care products (sanitary napkins/panty liners). We offer services for these liners by providing printing, coating and slitting operations if needed.
Graphic Arts
With this market growing by leaps and bounds, the release liner that is often used in these applications has had to adapt. Advertising films such as PVC, PP, PET are being used in car wrapping, reflective safety films and decorative vinyl’s. The release liner used with these films is key in making sure there is good lay flat characteristics, dimensional stability and adjustable release levels. We will work with you to help you tailor a product solution for your specific application.
Functional Coatings
A functional coating can be described as a “layer” over the substrate which could be paper/PE/film. This layer is providing a protection from the elements – rain, static, heat, slip/grip, absorption. One use of this in taking a Kraft paper coated with a cold seal adhesive. This enables to seal and wrap items without the use of tape or glue. It will form a strong bond at room temperature only when pressed together. Used in corrugated boards, for protecting put together do-it-yourself furniture and automotive parts.
 
TECHNICAL DATA
BASIS WEIGHT (LBS/3000SQ. FT)
25# - 120#
FIBER
NATURAL KRAFT, UNCOATED WHITE, SCK, GLASSINE, CCK, MFK, MG
MACHINE WIDTH
3" - 100" + CUSTOM WIDTHS

Request a Quote or Sample Here