A plastic article that uses two different types of plastic and that is clearly distinguishable between the two plastics
A plastic article that uses two different types of plastic and that is clearly distinguishable between the two plastics is called a two-color article. Mounted on the same injection molding machine with two sets of injection molding equipment (two-color injection molding machine), the mold that injects two kinds of plastics in order and produces two-color products is called a two-color mold.
Compared with the traditional injection molding, the two-shot co-injection molding process has the following advantages:
1. The core material can use low viscosity materials to reduce the injection pressure.
2. From the perspective of environmental protection, the core material can use recycled secondary materials.
3. according to different use characteristics, such as thick pieces of finished leather layer using soft materials, core materials using hard materials or core materials can use foam plastic to reduce weight.
4. Lower quality core materials can be utilized to reduce costs.
5. the cortical material or core material can be used expensive and special surface properties, such as anti-electromagnetic interference, high electrical conductivity and other materials to increase product performance.
6. The proper cortex material and core material can reduce the residual stress of the molded product, increase the mechanical strength or the surface properties of the product.
7. The produced products can own marbled patterns.
|INJECTION UNIT||SHOT 1||SHOT 2||SHOT 1||SHOT 2||SHOT 1||SHOT 2|
|SCREW L/D RATIO||L/D||22.5||24||22.5||21.5||22.5||21.5|
|THEORETICAL SHOT VOLUME||cm3||122||66||251||122||251||122|
|THEORETICAL INJECTION RATE（PS）||g/s||76||61||111||75||111||75|
|SCREW ROTATE SPEED||r/min||0-240||0-285||0-210||0-240||0-210||0-240|
|SPACE BETWEEN TIE BARS||mm||455×455||570×570||630×630|
|CORE AXIS STROKE||mm||120||120||120|
|CORE AXIA FORCE||KN||33||46||46|
|PUMP MOTOR POWER||KW||11||7.5||15||11||15||11|
|OIL TANK CAPACITY||L||281||384||545|