Screw tip set (assembly) consists of screw tip, check ring (non-return valve) and washer. Utilizing the most advanced technology in both design and manufacturing process, we manufacture wide range of different types screw tips to meet the needs of today’s injection molders. The screw tip is one of the key components in the molding process. The ever-widening range of both materials and processes faced by injection molders, along with the need for increased quality and productivity, makes screw tip function even more of a critical concern. The screw rotation moves and melts material that must then flow through the screw tip building up forward pressure that forces the screw back. The accumulated plastic in front of the valve is then injected into the mold, keeping material from escaping back onto the screw, which is the function of the screw tip or non-return valve. Poor screw tip function results in inconsistencies and inefficiency in the molding process. There are many design and process considerations for proper screw tip function that should be considered. ---------------------------------------------- Ningbo Jinyi Precision Machinery Co., Ltd. (since 1992) 158 Qiancheng Road, Zhenhai District, Ningbo 315207, China Email: info@jinyiscrew.com www.jinyi-machinery.com www.jinyi-precision.com