{"id":5771,"date":"2026-06-06T05:41:15","date_gmt":"2026-06-06T05:41:15","guid":{"rendered":"https:\/\/kangchuangpapers.com\/?p=5771"},"modified":"2026-06-07T05:46:13","modified_gmt":"2026-06-07T05:46:13","slug":"what-are-release-liners","status":"publish","type":"post","link":"https:\/\/kangchuangpapers.com\/de\/what-are-release-liners\/","title":{"rendered":"What Are Release Liners? Types, Coatings, and Uses"},"content":{"rendered":"

A release liner, also called release paper<\/a>, is the backing sheet that carries a sticky material until it is ready to use, the piece you peel off the back of a label or sticker. It is a paper or film coated with a release agent, usually silicone, that lets a pressure-sensitive adhesive cling lightly and then peel away cleanly. Without it, adhesive products could not be made, stored, or applied. The liner protects the adhesive, keeps it from sticking prematurely, and releases on demand at the moment of application.<\/p>\n\n\n\n

How a Release Liner Works<\/strong><\/h2>\n\n\n\n

The key is the release coating. A thin layer of cured silicone (or another low-surface-energy coating) is applied to the liner. Silicone has natural anti-adhesion properties, so a pressure-sensitive adhesive sticks firmly to the face material above it but only lightly to the silicone below. When you peel a label, the adhesive stays with the label and lets go of the liner cleanly, with no residue left behind.<\/p>\n\n\n\n

Coatings can be applied to one side or both sides of the liner, and the release force can be tuned from very easy to relatively tight depending on the application. Two-sided liners can even use differential release, with an easier release on one face than the other, which matters for products like double-sided tape.<\/p>\n\n\n\n

Common Release Liner Substrates<\/strong><\/h2>\n\n\n\n

The carrier beneath the silicone is the substrate, and the choice affects smoothness, strength, and cost.<\/p>\n\n\n\n

\u2022<\/strong> Glassine<\/strong> is a very smooth, dense, non-porous paper with good moisture and oil resistance, widely used for labels.<\/p>\n\n\n\n

\u2022<\/strong> Super-calendered kraft (SCK)<\/strong> is a smooth, strong kraft liner, one of the most common and economical choices, especially for labels in North America.<\/p>\n\n\n\n

\u2022<\/strong> Clay-coated kraft (CCK)<\/strong> adds a clay layer for a sealed, lay-flat surface with high dimensional stability and heat tolerance, common in medical applications like sterile dressings and surgical tapes.<\/p>\n\n\n\n

\u2022<\/strong> Polyethylene-coated kraft (PE kraft)<\/strong> adds a polyolefin coating for a smooth, moisture-resistant, dimensionally stable liner.<\/p>\n\n\n\n

\u2022<\/strong> PET film<\/strong> is a filmic liner prized for strength, high-temperature tolerance, and reliability on high-speed machines, often used in demanding or wet applications<\/a>.<\/p>\n\n\n\n

Glassine and SCK together make up roughly half of all label liner substrates, with clay-coated, PE-coated, and PET sharing much of the rest.<\/p>\n\n\n\n

Where Release Liners Are Used<\/strong><\/h2>\n\n\n\n

Release liners appear anywhere a sticky surface needs to be protected until use. The largest user is the label and sticker industry<\/a>, where the liner protects the adhesive on pressure-sensitive labels. They are also essential for adhesive tapes and double-sided tapes, graphic films, decals, and vehicle wraps, medical products such as wound dressings, surgical tapes, and transdermal patches, and self-adhesive membranes in roofing and construction. In each case the liner carries the adhesive cleanly from the manufacturer to the point of application.<\/p>\n\n\n\n

We manufacture silicone release paper<\/a> in a range of substrates and release levels. If you need release liner for labels, tapes, or specialty applications, request a quote<\/a> or free sample and our team will recommend the right material. See also our coated paper<\/a> range.<\/p>\n\n\n\n

Frequently Asked Questions<\/strong><\/h2>\n\n\n\n

What is a release liner?<\/strong> <\/h3>\n\n\n\n

A release liner, or release paper, is a paper or film coated with a release agent (usually silicone) that carries a pressure-sensitive adhesive and lets it peel away cleanly. It is the backing you remove from a label, sticker, or tape before applying it.<\/p>\n\n\n\n

What is the release coating made of?<\/strong> <\/h3>\n\n\n\n

Most release liners use a thin, cured silicone coating because silicone has low surface energy and natural anti-adhesion properties. The adhesive sticks to the face material but releases easily from the silicone-coated liner.<\/p>\n\n\n\n

What are the main types of release liner?<\/strong> <\/h3>\n\n\n\n

Common paper substrates are glassine, super-calendered kraft (SCK), clay-coated kraft (CCK), and polyethylene-coated kraft, plus filmic PET liners. Glassine and SCK are the most widely used, while PET suits high-speed and demanding applications.<\/p>\n\n\n\n

What are release liners used for?<\/strong> <\/h3>\n\n\n\n

Mainly pressure-sensitive labels and stickers, plus adhesive and double-sided tapes, graphic films and vehicle wraps, medical dressings and tapes, and self-adhesive construction membranes, anywhere a sticky surface must be protected until application.<\/p>\n\n\n\n

Choosing the Right Release Liner<\/strong><\/h2>\n\n\n\n

A release liner is a small component with a big job: it protects the adhesive and releases cleanly at the right moment. The right choice comes down to substrate, coating, and release level for your specific product, whether that is a label, a tape, or a medical dressing.<\/p>","protected":false},"excerpt":{"rendered":"

A release liner, also called release paper, is the backing sheet that carries a sticky material until it is ready to use, the piece you peel off the back of a label or sticker. It is a paper or film coated with a release agent, usually silicone, that lets a pressure-sensitive adhesive cling lightly and […]<\/p>\n","protected":false},"author":2,"featured_media":5772,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[32],"tags":[],"class_list":["post-5771","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-news"],"acf":[],"_links":{"self":[{"href":"https:\/\/kangchuangpapers.com\/de\/wp-json\/wp\/v2\/posts\/5771","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/kangchuangpapers.com\/de\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/kangchuangpapers.com\/de\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/kangchuangpapers.com\/de\/wp-json\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/kangchuangpapers.com\/de\/wp-json\/wp\/v2\/comments?post=5771"}],"version-history":[{"count":2,"href":"https:\/\/kangchuangpapers.com\/de\/wp-json\/wp\/v2\/posts\/5771\/revisions"}],"predecessor-version":[{"id":5775,"href":"https:\/\/kangchuangpapers.com\/de\/wp-json\/wp\/v2\/posts\/5771\/revisions\/5775"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/kangchuangpapers.com\/de\/wp-json\/wp\/v2\/media\/5772"}],"wp:attachment":[{"href":"https:\/\/kangchuangpapers.com\/de\/wp-json\/wp\/v2\/media?parent=5771"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/kangchuangpapers.com\/de\/wp-json\/wp\/v2\/categories?post=5771"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/kangchuangpapers.com\/de\/wp-json\/wp\/v2\/tags?post=5771"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}