• The sprue portion of the runner wastes raw materials and obstructs resin flow, which in turn reduces molding quality, increases stress and causes excessive injection pressure.
• The sprue also takes longer to cool than the products do, causing the molding cycle to be longer than necessary.
• Eliminating the sprue halves the bulk of the runner, so production costs for transportation and storage are also halved.
• The MSK Hot Sprue Bush replaces the sprue bush of a mold and is able to provide a smoother injection molding process.

Features:

• When injection is complete, a valveless sealing system closes the gate, eliminating problems such as resin drooling and stringing. (Patent pending)
• We made the heating wire of the tubular heater last several times longer than that of an ordinary heater.
• The outer diameter of the hot sprue bush is only ø24 or ø32mm (standard) including the heater, so the mold stays rigid.

How it will reduce your costs:

• Product is tough enough to outlast several generations of molds.

How it will boost your efficiency and yield:

• Suits all resins
• Valveless sealing mechanism prevents stringing completely.

Construction of the Hot Sprue Bush:

• A high-precision abrasive-finished tubular heater is fitted on the cylindrical part of the sprue bush main body to form a hot sprue bush.
• The main body is made of highly heat- and pressure-resistant steel.