Production speed and versatility of coating and lamination
Coating and laminating are the modern techniques that add value to Technical Textile and Plastic film flexible substrates.
In transfer coating it is essential to find the right product according to the peculiarities of the application. We developed water-based solutions that bring flexibility into production speed and the versatility of coating & lamination.
In technical textile the principle technique of transfer coating lies in spreading the polymer on to release paper to form a film and then to laminate this film to the fabric. The process is divided in few steps:
- Application of the coat on the resin. It will further become the top layer on the transfer paper. For this step we have developed sustainable waterbased polyurethane and acrylic polymers.
- Application of the second layer of coating. It will further become the base layer (naturally it is also an adhesive that merges with the top layer on the fabric).
Placing the fabric on top of the coating, clasping them together, evaporating the water and crosslinking two layers together.
Peeling the coated fabric off the release paper.
That coating technique is mainly used in the transfer coated polyurethane fabrics of up-market and the waterproof protective clothing. Other applications for transfer coated polyurethane include upholstery, luggage, footwear, gloves and some modified process transfer to fabric and garments.
For metal transfer a polyurethane coating will be temporarily applied on a NOT CORONA TREATED BOPET film. Subsequently the PU coating is metalized through Al deposition under vacuum. Then, to perform the transfer of the coating on the final substrate, it’s necessary to apply a thermo reactive glue (hot stamping process) or an UV curable glue (cold stamping process).
With our PUDs through a well defined balance between mechanical properties and chemical structure we can achieve an easy peel and sharp edges in hot or cold stamping process.
Transfer coating is the top coat of the final article, therefore printability and mechanical/chemical resistance are also important features to achieve.