Advanced Coated Products

Release Liners

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Our range of release liners are products that utilise silicone coatings to give release characteristics to allow materials that would normally stick and be awkward to handle, to be manufactured and used in a convenient manner.

Initially release liners were used in the manufacture of self adhesive labels (labelstock) and self adhesive tapes (pressure sensitive tapes), they are now used for a wide range of applications and markets including medical, graphic arts, industrial, medical, envelopes and food. (We have a wide range of release liners for the food industry – just go to our The Foodwrap Co website for more details

www.thefoodwrapco.co.uk

 

Various factors affect the release properties and mechanics of a release liner. So due to the large amount of factors, the range broad range of coatings and substrates that we use, we always tailored specifically to the end application.
The following are the main factors:-

Adhesive Silicone Release Coating Substrate Laminate Converting
         
Chemical Nature Polymer Type Type of Paper or Film Type of Substrate & Flat Sheet Stripping Speed
Modulus Polymer Properties Porosity Flexibility / Stiffness Physical Dimensions
Surface Energy Modulus Smoothness Mode of Adhesive Application Stripping Angle
Coating Weight Coating Weight Stiffness / Flexibility Moisture Content Balance  
Uniformity of Coating Uniformity of Coating Calliper Consistency Elongation  
Cure / Cross Linking Smoothness of Coating Surface Energy    
Residual Solvent Level Cross Link Density pH    
Component Migration Film Continuity Internal Bond Strength    
  Cure Mechanism Surface Absorbency    
  Surface Energy Residual Chemicals from Manufacture    
  Extent of Cure      
  Level of CRA      

 

Release the Potential

Release Liners - Silicone Coatings

Release Liners - Silicone Coatings

Silicone is a material based on polydimethyl siloxane, and to be effective against adhesives it needs to be fully cross linked and anchored to the substrate to prevent migration which will destroy the adhesive properties.

 

Release Liners - Substrates

Release Liners - Substrates

The end use of the product will determine what characteristics are desirable in the substrate used to support the silicone.

Release Liners - Paper

Release Liners - Paper

Paper is made from trees by removing the bark and chipping the wood into small pieces and dispersing in water to separate the fibres. 

Release Liners - Films

Release Liners - Films

The main film types for silicone coating are low density and high density polyethylene.