What Is A Release Liner?

A release liner is a product that carries a sticky substrate (pressure sensitive adhesive) until it is ready for its next step. Sometimes called a 'carrier' or a 'backing' paper/film, release liners hold onto or carry the sticky substrate, until whatever it is carrying is ready to be released.
Release liner can be film-based, paper-based, polycoated-paper based, or even have unique substrates, such as metallized papers/films as their base. Release liner substrates are often coated with silicone, which allows whatever the liner is carrying to release when the time is right. However, this release can also be accomplished with non-silicone coatings or even with a surface characteristic of the substrate that doesn't require a coating at all. These are highly specialized release liners.
Multiple End Use Market Applications
Pressure-sensitive adhesives require the use of a liner to carry the adhesive and face through converting and application. Pressure-sensitive labels, tapes and graphic arts are global applications where strength of the liner is important for adhesive coating, die-cutting and converting. In the case of labels, the liner must be designed to perform in high speed automated application equipment.
Medical and hygiene markets also utilize release liners for applications including electrodes, wound dressings, transdermal patches, diapers and feminine care products. Medical applications can require higher levels of cleanliness in the manufacturing process, and the products must often meet special regulatory requirements. The removal of the release liner for these products is usually done by hand, often by the consumer, so consistency of release is imperative.
Industrial applications for release liner include building and construction applications such as roofing shingles, weatherproofing and insulation products. The manufacturing of composites for aerospace, wind energy, recreation and automotive applications utilize release liners during the manufacture of pre-preg, an early stage of the manufacture of finished composite products. These are highly specialized applications where the liner is exposed to high temperature fluctuations and must maintain its dimensional stability.
Products performance:Items | Unit | Tolerance | Value | Testing Method | |
Appearance | milky white, light blue,light blue,red,No impurities, no scratches | Eyes | |||
Thickness | mic | ±2.5% | 80,100 | ASTMD-3652 | |
Release force | g/25mm | - | 10±2 | FTM 10 with Tesa 7475 | |
Haze | % | - | *** | ASTMD-1003 | |
Tensile strength | MD | Mpa | - | 300 | ASTMD-882 |
TD | 280 | ||||
Elongation | MD | % | - | 40 | |
TD | 500 | ||||
Heat shrinkage | MD | % | 1.5 | ASTMD-1204 | |
TD | 0.5 | ||||
%=COF-Static Coated to Steel | - | - | 0.35 | ASTMD-1894 | |
Gloss | - | - | 94 | ASTMD-2457 | |
Wetting Tension | Dyne | - | 38 | ASTMD-2578 | |
Subsequent adhesion | % | - | 85 | FTM 10 with Nitto 31B | |
Silicone Extractable | % | - | 3.5 | Atomic Absorption Spectrometer | |
Silicone Rub Off | Cycle | - | 5 | Abrasion test |
Application:
•Widely Application on transfer printing,electronic,building ect. For protection or separate.
Storage condition and Shelf time:
* Away from direct sunlight,under the condition of normal temperature and 20%-80% RH;
* Shelf-time is within 6 months from production date.
Production machines:




Linqu Jiaxing Plastic Co.,Ltd.,is built in 2004, is a professional and high-tech manufacturer of release film,surface protect film,hot melt EVA film,high temperature tape/PI tape,aluminium foil tape,glass fiber tape ect. Related plastic products, our products are widely applied on electronic industry,building material and new energy ect. Many areas;
Main products:
1.surface protection film;
2.glass protection film;
3.laser cutting film for steel;
4.PI tape;
5.PET high temperature tape;
6.ESD shielding tape;
7.double sided foam tape;
8.filament tape;
9.duct tape/gaffer tape/cloth tape;
10.reflective tape/reflective sheeting;
11.hot melt EVA film;
12.HDPE release film;
13.PET release film;
14.PP release film;
15.high temperature label/temperature resistance tags;
Jiaxing Plastic,is located in Weifang city- well-known as International Kite Capital,which adjoin with Qingdao port; during over ten years' development,Jiaxing Plastic covers an area of over 40 thousand square meters, uphold 2 ten thousand class dust free workshops,there are 5 sets coating machines,2 sets six colors printing machines and 1 set casting machine; Jiaxing Plastic,with a strong technical strength,has over 200 employees, A group of competent management teams and a team of professional technologists, also R & D team led by experts.
Jiaxing Plastic presently passed ISO9001,SGS certificates, products are exporting to over 30 countries and areas,including USA,UK,RUSSIA ect., acquire new and old customers alike.
Warmly welcome to your inquiry and visit!