The new valve needle cylinder for long glass injection, can achieve higher product stability. Ben Somme, Germany, October 2005 - The stability of long fiberglass structures increases with the length of the fiber, with an increase in each millimeter to make the fiber structure more stable. To this end, Synventive Molding Germany, based in Bentheim, Germany, invented a new valve needle cylinder for its hot runner system with a very large stroke and an optimized flow path compared to conventional molds Hold the glass fiber to a greater extent. The motivation for this innovative invention stems from the field of application that uses as long a glass fiber as possible to further enhance the product's strength, impact resistance and dimensional stability. In addition to fiberglass granules and fiberballs with limited fiber length, the use of long fibers by filament yarn blending companies is also growing, extending the use of long fibers in the product. The metering device has the greatest effect on the fiber shortening technology. The injection molding manufacturer must try to ensure the remaining length of the fiber, and the gate is also an important stress point for hot mouth and raw materials. Larger sections, round corners and runners that have no effect on the valve needle can help reduce stress and shear stress and ensure maximum protection of the fiber material. These are just a few of the many benefits of the new Synventive HYC 4018 and PNC 7518 (Hydraulic / Pneumatic Drive) products, as well as the extended service life of valve pins and hot nozzles, Can increase. Synventive's effort to increase the fiber length per millimeter will give the injection molder and product manufacturer an overall benefit. For example: reduced shrinkage, reduced deformation, increased mobility, reduced anisotropy, linear thermal expansion also decreased, and so on. More importantly, the reduction in skin thickness not only makes the product lighter, but it also reduces the cooling time in the manufacturing process and increases productivity. The new valve needle cylinder offers all the benefits of the series, such as height-adjustable valve stems, lockable and externally adjustable valve stems, patented needle bushing with effective cooling, Technology, etc. This product is suitable for the automotive industry, household appliances, electrical and power installations.