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Tips for an Excellent Wrapping Process

Reactive hot melt PUR adhesives for PVC profile wrapping



Usually, people think that buying the best adhesive or the best system available on the market is 99% of the final successful outcome. Thanks to our many years of experience we realised that, as fundamental the quality of the chosen products and technologies may be, quality alone is not enough to reach the final goal. There are many factors that can influence the final outcome, in particular when using a special process such as surface finishing.

BELOW IS A BRIEF LIST OF ESSENTIAL POINTS TO TICK OFF FOR A SUCCESSFUL APPLICATION:

1. Knowledge of supports and treatments to be performed in the presence of materials with low surface energy, such as PVC, WPC, etc. (by developing low carbon footprint adhesives such as the LOW VOC WPN 3 and WPN10-0% VOC- primers)

2. Knowledge of wrapping foils: each foil needs special application techniques; for instance: CPL melamine foils require a specific pre-heating treatment - at above 90°C - in order to be modelled without breaking and be applied to profiles with difficult geometries, such as door jambs. It is by combining application knowledge with the best product, in this case, TK 2308.25PV, an adhesive with a very high initial grip at high temperatures, that ultimate success is attained.

3. Knowledge of systems: The importance of knowing how to choose a high-precision hot melt application head that allows for homogeneity of coating over the entire width of the foil even on extremely wide surfaces of over 1000 mm. Homogeneity of coating is fundamental, for example, with thin foils or glossy foils, where the quantity of glue used can create visible surface waves.

4. Knowledge of adhesives: The choice of adhesive, as mentioned above, is essential. Often, customers use a different adhesive for each type of foil or profile. It is our experience that, in some cases, the same adhesive can be used with different materials, adjusting the application parameters or the tooling, and by using specific machine accessories to heat or cool the surfaces according to need.

5. Knowledge of guaranteed product performance: For instance, in the case of profiles to be used outdoors, it is important to know where the final product shall be installed and choose the right combination of adhesive and wrapping foils, one that can withstand specific climate stresses.

6. Knowledge of the application process, in order to guarantee improved performance: for instance, ncreasing the machine speed by 1m/min makes it possible to produce 480m of profiles more in an 8-hour shift.

THE WPR-TAKA EXPERT TEAM SHALL BE AT YOUR SIDE FROM START TO END, FOR GUARANTEED PERFECT RESULTS!

IF YOU WISH TO KNOW MORE ABOUT OUR ACADEMY AND THE TOOLS IT MAKES AVAILABLE, PLEASE SEND A MESSAGE TO ACADEMY@WPRTAKA.IT