Polyfuze HT Labeling Material Testing Polypropylene
Polyfuze Graphics Corporation demonstrates the new Polyfuze HT heat transfer graphic as it fuses with many plastic material types. For those that are new to the Polyfuze HT heat transfer graphic, it is applied with standard hot stamping equipment and is manufactured for application on olefin based resins.
This blog series will cover several plastic material types over the next month. In each post, Jason Brownell, our VP Sales Manager at Polyfuze Graphics Corporation, will demonstrate application on a new material type that the Polyfuze HT has been formulated for. Jason will also explain some of the subtle differences and troubleshooting areas that may occur with each material and how to achieve the best settings for each.
If you have already tried using a Polyfuze Graphic but are struggling to get a consistent result, then this series can jump start your success back on track for better production efficiency, more profits and less scrap for a better branding experience.
Polyfuze HT – Material Testing Episode 2 (Polypropylene):
In the second video of this series, we will be fusing the Polyfuze HT graphic into Polypropylene. Polypropylene is a thermoplastic polymer. Many common glues or adhesives used with other labeling methods will not form a cohesive bond to the Polypropylene. In fact, no cohesion is achieved at all since it tries to use adhesive to “stick” a label to the surface of the plastic. You need to understand that Polypropylene (PP) is a commodity plastic with a very low density. You must dial in the correct heat, time and pressure settings to achieve the desired result and permanence, without over melting or gouging your plastic.
When stamping PP plastic you will need to set your machine at 550F and use a high temperature silicone die that is 80 durometer. Then start with a dwell time of about 2 seconds, which is going to be a little bit longer of a dwell time compared to that of HDPE. You can work up or down from there as needed. You may also want to add a second of head up delay since everything is in a molten state.
When the graphic has been successfully transferred, verify the permanence and 100% fusion of the Polyfuze HT labels into your PP plastic by doing a standard ASTM Tape Test. View the ASTM tape testing video here to learn more.