Performance and appearance quality, uniform consistency between batches of finished products, production efficiency of molding processing
The rate and economy depend to a large extent on the structural characteristics and correctness of the extrusion molding machine.
Extruder is generally a general-purpose extruder, but the extruder is required to adapt to cyclical frequent
Stops; pushbuttons for starting and stopping should be installed closer to the operator.
There are many manufacturers of extrusion blow molding special units (or production lines), such as: Huatai
(Yuyao) Rubber & Plastic Machinery Co., Ltd. manufactures SCJ series plastic hollow molding machine (SC3 -
65 I, SCJ-75 III, SCJ-90 III ), Weili (Shantou) Plastic Machinery Factory
Limited company manufactures CPJ series automatic plastic bottle blowing machines, manufactured by Leshan Machinery Industry Co., Ltd.
SCJ-Y (SCJ-G, SCJ-E, SCJ-U) various series of NC blowing machine.
Regardless of the type of extruder or special machine used, the extruded parison must
Meet the following requirements.
1 The batch size, melt viscosity and temperature are uniform.
The appearance quality of the parison 2 is better.
Extrusion of the parison 3 must be as fast as the time required for clamping, inflation, and cooling.
The parison 4 must be extruded at a steady speed.
5 Accurate measurement and control of temperature and extrusion speed.
6 Because the cooling time directly affects the production of blow moldings, the parison is always
Extrusion at the lowest possible processing temperature. In this case, the viscosity of the melt is high.
High back pressure and shear forces, which require the drive system and thrust of the extruder
Bearings should have sufficient strength.