Nanolayers Come to Tubing
Nanolayer technology, an active area of development in films, is also making its way to tubing extrusion.
Nanolayer technology, an active area of development in films, is also making its way to tubing extrusion. Guill Tool & Engineering, W. Warwick, R.I., recently introduced the patented NanoFlow die, which can create more than 1000 layers from a single extruder in thicknesses in the micron (1 millionth of a meter) to nanometer (1 billionth of a meter) range. The tool allows processors to save money by making more judicious use of expensive resins. Nanolayers are also said to produce tubing with increased impact and fracture toughness and/or tear strength. Brittle materials prone to cracking can be combined with soft ductile layers to limit crack propagation. What’s more, barrier properties can reportedly be better engineered by designing them as the thinnest possible layers, which will force materials to crystallize and thereby enhance their performance.
Related Content
-
The Importance of Viscosity in Melting
The calculations required to determine the right melt temperature for each polymer are complicated. Knowing the power-law coefficient and the consistency index of the polymer you run might prove useful.
-
The Importance of Barrel Heat and Melt Temperature
Barrel temperature may impact melting in the case of very small extruders running very slowly. Otherwise, melting is mainly the result of shear heating of the polymer.
-
Avoid Four Common Traps In Granulation
Today, more than ever, granulation is an important step in the total production process. Our expert explains a few of the many common traps to avoid when thinking about granulators