Dispersion adhesives for film to print lamination
Highly refined folding boxes, book covers and other printing products set new standards in quality and appearance. Print finishers have a wide variety of possibilities for upgrading a product. One established and effective procedure is the film to print lamination of printed sheets with matt, glossy, structured, or special effects films. This results in enhanced printed surfaces of a superior quality. The quality of the lamination depends on several factors. The application method, the materials to be bonded, and the adhesive all have a decisive impact on the laminate quality and consequently also on the appearance and value of the entire print product. For many years, solvent-based adhesives were the product of choice for this application in the past. Increased requirements regarding the environmental compatibility of manufacturing processes and the recycling properties of the substances used imposed the need for a system change in the graphics industry. Alternative systems
that facilitate solvent-free laminating became absolutely necessary. In the last years, Jowat has developed and optimised a complete range of water-based adhesives for this application in close cooperation with engineering companies and print finishers.
Products from the Jowacoll® 764.xx product group have been consistently optimised over the last years to improve their performance, for instance mechanical processing characteristics, cutting resistance, coating weight, gloss, and resistance to mechanical stress, e.g. due to embossing or fold burning. In addition, the new product generation also includes several adhesives that are approved for food contact. Which of the modern laminating adhesives is the best fit for an application depends on the machine type and the application method used, as well as on the specific requirements. However, the adhesive choice can also be influenced by what type of paper or film is to be bonded and by whether it has been printed conventionally or digitally.
The table below provides an overview of our dispersion adhesives from the product series Jowacoll® for laminating printed sheets. The product range comprises different product types with special performance characteristics adapted to the general process requirements in laminating applications.The products have been developed to meet the different requirements which arise from the production process as well as from the different carrier substrates and lamination materials. If the laminated compound is exposed to high mechanical stress during downline processing or if the films to be processed have a high rigidity (e.g. PET or acetate films), it is advisable to add 1.5 – 5 % of crosslinking agent Jowat® 195.70 or 195.79 in the case of food packaging.
The products listed only represent a limited selection of the available product portfolio. Product availability might differ by region. The technical data, characteristics and field of application provided in the table outline the differences between the individual adhesives of the product portfolio. Our Application Technology Department and our Sales Representatives are on hand to provide advice and support you finding the best adhesive for your particular application.
Note: The information on this page is based on test results from our laboratories as well as on experience gained in the field, and does in no way constitute any guarantee of properties. Due to the wide range of different applications, substrates, and processing methods beyond our control, no liability may be derived from these indications nor from the information provided by our free technical advisory service. Customer trials under everyday conditions, testing for suitability at normal processing conditions, and appropriate fit-for-purpose testing are absolutely necessary. For the specifications as well as further information, please refer to the latest technical data sheets.