Hirose Paper established the process to produce nanofiber in large quantities, using Nozzle-Free Electrospinning Technology. This nanofiber is overlaid on Hirose’s Ultra-Thin Wet-Laid Nonwoven to significantly reduce its pore size. As well as the reduction of pore size, Hirose’s overlay technique contributes to the ease of handling nanofiber with no loss of nanofiber’s excellent properties. In addition, this technique enables to offer new exciting properties which nonwovens has not ever achieved.
◊ Nozzle-Free, Clogging-Free, No Slowing-Dwon in  Spinning Speed◊ Large Spinning Area, High Production Capacity ◊ Reduction of Basis-Weight Variation ◊ Process Simplifying for Overlaying |
| Nanofiber Overlaid Nonwoven is a multilayer structure made of Nanofiber and Ultra-Thin Nonwoven. Two-layer (nanofiber+polyolefin) and three-layer (polyolefin+nanofiber+polyolefin) structures are now available. As well as high production capacity, Hirose’s new technology “Electro Bubble Spinning” enabled to directly overlay nanofiber webs on Polyolefin Nonwovens. This is how Nanofiber Overlaid Nonwoven was developed. This product has a lot of great features (i.e. extremely small pore size, easy handling with no loss of nanofiber’s excellent properties). Hirose can customize this product to suit your needs. |   |
| Composition | Base Material | Basis Weight (g/m2) | Thickness (µm) | Density (g/cm3) | Void Ratio (%) | Tensile Strength (kg/15mm) MD/CD |
| 2-Layer | HOP6 | 8.4 | 24 | 0.350 | 67.1 | 0.663/0.348 |
| 2-Layer | HOP2 | 4.6 | 15 | 0.307 | 69.7 | 0.280/0.290 |
| 3-Layer | HOP4 | 12.7 | 26 | 0.488 | 55.0 | 0.825/0.721 |
| 3-Layer | HOP4 | 18.4 | 27 | 0.681 | 39.0 | 1.400/0.691 |
◊ High Performance Filter Media (Air, Liquid) with Nanofiber  Diameter Control Technology◊ Li-Ion Battery Separator with Polymer/Ceramic Composite Nanofiber Technology |
