Valve Gates Injection Molding

This allows a part to be molded without a sprue or runner remaining on the.

Valve gates injection molding.

Clearly when designing for injection molding gate selection may require some deliberation. For valve gates anything can happen. The softgate system is an enhanced feature that precisely controls the opening phase of the actuated valve pin. With one of the broadest product lines in the industry husky equipment is used to manufacture a wide range of plastic products such as bottles and caps for beverages containers for food medical.

A hot runner system offers some significant advantages in injection molding. Valve gate hot runner nozzles were introduced to the injection molding industry shortly after the first hot runner systems appeared on the market. The valve gate shuts off the flow of molten plastic to the mold at a specific time right at the part surface. The injection molding is programmed as to how much plastic is needed to fill the mold.

Until recently valve gates had been chosen primarily for applications where thermal gate vestige is unacceptable. Once this specific amount passes through the barrel of the injection molding equipment and out the nozzle the valve gate closes instantly preventing any more plastic from passing through. Assuming you haven t specified one protolabs will choose the most appropriate gate type and position based on your design and resin but you will have an opportunity to review gate placement during order confirmation. Lsr injection molding with shut off valves also called cold runner systems which can save liquid silicone rubber materials and labor cost also have good lsr product s surface small injection gate.

Make an appropriate number of parts with a hold time known to provide gate seal and a second set with a second stage time known to provide parts with unsealed or. They will produce very consistent shot to shot repeatability faster cycle times good automatic mold operation and better part quality. Sequentially controlled valve gated systems offer a proven method to achieve superior part quality by selectable placement of weld lines especially in large part molding applications. Mold designs using hot runner thermal gated systems and valve gate systems are often specified to provide the utmost in high performance molding.

Husky injection molding systems is the world s largest brand name supplier of injection molding equipment and services to the plastics industry. Why how to do gate seal experiments.