Release Liner - Automatic Skeleton Watch Manufacturer - China Automatic Skeleton Watches
Industry segmentation
Industry segmentationGlobally there are between 400 and 500 companies involved in making or dealing with release liner products on an industrial scale. In general there are two types of companies which are manufacturing release liner.
Liner producer
Commercial coating companies, deal with a lot of different end uses of this industry. They provide unique solutions to their customers, based on a wide variety of substrates and an endless combination of release agents with specialized properties. Commercial coaters usually make no finished products, but just the release liner itself and then their customers will coat a sticky material on this liner and then apply the end product to it.
in-house producer
in-house producer make release liner and use it internally to manufacturer the final product. IN-House producer are typically focused on a very narrow rage of products e.g. Labels or Tapes. They use a limited amount of substrates and release materials, specialized for their end applications.
Liner materials
As "Liner" material, the industry is using a wide variety of so called substrates, which are the carrier materials of the release agent and which is needed to transport a sticky material from the manufacturer to an industrial or private end user. Typical liner materials are:
Paper
Paper
SCK = Super Calandered Kraft paper, typically used for Labels in the USA
Glassine= Is also a SCK paper but typically with a PVA Polyvinyl alcohol top coat, typically used for Labels in Europe
CCK = Clay Coated Kraft paper or also just called coated paper
MFK = Machine Finished Kraft paper, which is the paper as it comes from a standard paper machine
MG = Machine Glazed paper which is a paper which has been glazed e.g. on a yankee cylinder of a paper machine.
Plastic film
BO-PET: a PET film (biaxially oriented) is a very high temperature resistant and tough film liner.
BOPP: a biaxially oriented PP film
Other Polyolefins: typically made out of HDPE, LDPE, PP plastic resins
Plastic films in general are made by plastics extrusion process out of plastic resins and can be made out of one single type of plastic material, a blend of different plastic materials or a multilayered coextrusions. Providing them with unique and adjusted features for the application that they are targeted for.
Others
Poly coated Kraft papers, which are typically MFK papers which have a one one or both sides a poly olefin coating, to make them very smooth, moisture resistant and dimensionally stable
A poly coated BO-PET film, which has been like a paper coated on both sides with a polyolefin material. This way the tough and dimensionally stable PET film is combined with cheap polyolefin resin which makes the fill a better carrier web for specialty applications.
Release agents
Commonly used release agents for release liner can be crosslinkable silicone, other coatings, and materials that have a low surface energy.
Applications
There are probably hundreds of different applications, where release liner materials are being used. Such as
pressure-sensitive labels
Pressure sensitive tape
Hygienic application e.g. for FemHygiene pads
Building and construction materials, e.g. window films, roofing underlayment, air barriers
Composites e.g. Air plane construction, Wind mill blades, Golf clubs, soldier helmets
Medical applications e.g. wound care
See also
Pressure sensitive adhesive
Categories: AdhesivesHidden categories: All articles with unsourced statements | Articles with unsourced statements from July 2009
by: gaga