Laminating
A wide range of uncoated and coated films are available, as such, in combination – two more films with themselves, films with non-plastic substrates-their properties can be considerably broadened.
The Lamination Process
Film Lamination primarily refers to creating strong adhesive bonds between the films. To apply these adhesives, multiple coating technologies present a variety of ways for application from emulsions or/to solutions.
Oriented Nylon Laminated to an LDPE/Ionomer Coextruded Film
Here, outstanding heat seal performance is combined with a modest barrier in the following construct: 0.45 mil uniaxially oriented nylon/ 2 mil coextruded film of LDPE and ionomer. In this thermal lamination, LDPE provides the moisture barrier, nylon ensures a modest barrier and seal performance is facilitated by the added ionomer layer. By extrusion coating, this structure can be obtained using the coextrusion technology (detailed in a later section). The mechanism adopted is based on the availability of equipment and expertise with the manufacturer.
PET Film Laminated to LDPE Coated Aluminium Foil.
Here, a robust heat seal performance is combined with an excellent barrier in the following construct: 0.48 mil PET film/ 0.7 mil layer of extruded LDPE (adhesive) to previously extrusion coated aluminium foil/ 2.2 mils of LDPE. In this lamination, a heat seal layer is provided by the thick LDPE coating on the foil on the outside and the barrier by the foil. In additiion, the PET film can be printed.