The stability of the long glass fiber structure increases with the increase of the fiber length, and the increase per mm makes the fiber structure more stable. Therefore, Germany's Synventive Injection Molding Industry Germany has invented a new type of valve needle cylinder for its hot runner system, which has a very large stroke and optimized flow path. Compared with the traditional mold, it can maintain the glass fiber to a greater extent. The length further increases the strength, impact resistance and dimensional stability of the product.

In addition to glass fiber granules and fiber spheres with limited fiber length, filament yarn compounding companies have gradually increased the use of long fibers, expanding the use of long fibers in products. The metering device has the greatest impact on the technology of fiber shortening. Injection molding manufacturers must try to ensure the remaining length of the fiber, and the gate is also an important stress point for the hot nozzle and the raw material. Larger sections, rounded corners, and flow paths that have no effect on the valve stem can help reduce pressure and shear stress and ensure maximum protection of the fiber material.

These are just a few of the many advantages of Synventive's new HYC 4018 and PNC 7518 (hydraulic/pneumatic drive) products. Another advantage is that the service life of the valve needle and the hot nozzle can be extended and the number of injections is also increased. Can increase. The efforts of Synventive to increase the fiber length per millimeter will give the injection molder and product manufacturers a return on the overall benefits. For example, the shrinkage rate is reduced, the deformation rate is reduced, the fluidity is enhanced, the anisotropy is lowered, the linear thermal expansion is also reduced, and the like. More importantly, the reduction in surface thickness not only makes the product lighter, but also shortens the cooling time in the manufacturing process, thereby increasing productivity.

The new valve needle cylinders offer all the advantages of this range, such as adjustable stem height, lockable and externally adjustable valve stems, patented valve needle bushings with effective cooling and cylinder coupling Technology, etc. (HYC 4018) This product is suitable for use in the automotive industry, household appliances, electrical and electrical installations.

Synventive is one of the world's largest producers of hot runner systems, machine nozzles, temperature controllers, and sprue bushings for the injection molding industry. Its production facility in China is located in Suzhou.

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