Further damage to the fiber also occurs with reduced dissolution accompanied by decreased resistance to flow. Large cross-zone flow channels are good for fiber, so when working with long glass fiber particles, the screw structure and barrier return valve should be adjusted accordingly.
When the particles are infused, the fibers enter a complete smelting process and the mechanical tension on the fibers will continue for a longer period of time. The beginning of plasticization also applied this enormous force, because at that stage, the masterbatch was not completely melted, and some fibers were exposed to great shear forces.
The screw size and stroke specifications also affect the mechanism of fiber damage. The test results show that the larger screw (D=165mm) is less damaging to the fiber than the smaller screw (D=90mm). Longer metering strokes can also have an adverse effect on the remaining fiber length. The dispersed arrangement shows the effect of the long glass fiber particle structure.
Contrary to this, the injection molding compounding is to melt the pure masterbatch without fiber, and the fiber is added into the melt later, so that correspondingly less mechanical tension is absorbed. This method can achieve higher average fiber lengths than smelt mixing in an injection molding machine. Injection molding compounding (IMC) allows the crude fiber to be added directly to the melt without decomposing the fiber. Although the coarse fiber is broken down into short sections under the rotation of the screw, the final fiber still has a longer average length. .
The price of raw materials from an economic point of view is very important for fiber-reinforced polypropylene parts. Long glass fiber particles for injection molding are cheaper than GMT semi-finished products. However, manufacturers pay more for buying pellets than buying a single raw material. One advantage of using injection molding compounding for raw material manufacturers is that raw material prices are more economical than using long glass fiber particles, and the proportion of raw materials in the entire component manufacturing cost can also be reduced.
Adding long glass fiber-reinforced polypropylene particles to injection molding machines reduces the degree of intensification of the particles into pellets compared to injection molding. It is possible to process long glass fiber particles by adjusting or replacing plasticizing units in existing injection molding machines. Even if it is difficult to retrofit, you must install a new machine. Injection molding machine processing still requires less investment, and the twin-screw extruder needed for injection molding compounding complicates the equipment.
How to decide in addition to the advantage of fiber length distribution in the parts mentioned above, the injection molding compounding also has potential savings in the raw materials, but this potential effect can only be realized through additional investment. An important criterion in choosing from injection molding machines and injection molding compounding is the weight and volume of the manufactured components. Injection molding compounding has the advantage when the output is high, because the investment saved when purchasing raw materials will quickly exceed the increased investment in purchasing equipment, so that the investment can be allocated quickly. When the number of parts is small or the yield is low, processing long glass fiber particles on the injection molding machine is a better method because it requires only a small investment.
Injection molding compounding gives manufacturers more flexibility so they can tailor materials to their own needs. They can selectively adjust the ratio of masterbatch and fiber, for example, to make the fiber content of the component meet the desired technical characteristics. When glass fiber particles are processed, this selective adjustment is only possible under certain conditions. Because manufacturers only provide a variety of fiber types for pellets, producers need long glass fiber pellets mixed with unreinforced polypropylene - a work step that provides additional requirements and a raw material supply system.
However, the degree of freedom that the injection molding compounding provides to the manufacturer can also be said to be a mixture of materials that improves the interpretability of the product and the reliability of the manufacturer. Producers must now take responsibility for ensuring quality and ensuring the quality of pellet manufacturing. There are potential opportunities for injection molding compounding to increase the additional prices created in production. (Finish)
When the particles are infused, the fibers enter a complete smelting process and the mechanical tension on the fibers will continue for a longer period of time. The beginning of plasticization also applied this enormous force, because at that stage, the masterbatch was not completely melted, and some fibers were exposed to great shear forces.
The screw size and stroke specifications also affect the mechanism of fiber damage. The test results show that the larger screw (D=165mm) is less damaging to the fiber than the smaller screw (D=90mm). Longer metering strokes can also have an adverse effect on the remaining fiber length. The dispersed arrangement shows the effect of the long glass fiber particle structure.
Contrary to this, the injection molding compounding is to melt the pure masterbatch without fiber, and the fiber is added into the melt later, so that correspondingly less mechanical tension is absorbed. This method can achieve higher average fiber lengths than smelt mixing in an injection molding machine. Injection molding compounding (IMC) allows the crude fiber to be added directly to the melt without decomposing the fiber. Although the coarse fiber is broken down into short sections under the rotation of the screw, the final fiber still has a longer average length. .
The price of raw materials from an economic point of view is very important for fiber-reinforced polypropylene parts. Long glass fiber particles for injection molding are cheaper than GMT semi-finished products. However, manufacturers pay more for buying pellets than buying a single raw material. One advantage of using injection molding compounding for raw material manufacturers is that raw material prices are more economical than using long glass fiber particles, and the proportion of raw materials in the entire component manufacturing cost can also be reduced.
Adding long glass fiber-reinforced polypropylene particles to injection molding machines reduces the degree of intensification of the particles into pellets compared to injection molding. It is possible to process long glass fiber particles by adjusting or replacing plasticizing units in existing injection molding machines. Even if it is difficult to retrofit, you must install a new machine. Injection molding machine processing still requires less investment, and the twin-screw extruder needed for injection molding compounding complicates the equipment.
How to decide in addition to the advantage of fiber length distribution in the parts mentioned above, the injection molding compounding also has potential savings in the raw materials, but this potential effect can only be realized through additional investment. An important criterion in choosing from injection molding machines and injection molding compounding is the weight and volume of the manufactured components. Injection molding compounding has the advantage when the output is high, because the investment saved when purchasing raw materials will quickly exceed the increased investment in purchasing equipment, so that the investment can be allocated quickly. When the number of parts is small or the yield is low, processing long glass fiber particles on the injection molding machine is a better method because it requires only a small investment.
Injection molding compounding gives manufacturers more flexibility so they can tailor materials to their own needs. They can selectively adjust the ratio of masterbatch and fiber, for example, to make the fiber content of the component meet the desired technical characteristics. When glass fiber particles are processed, this selective adjustment is only possible under certain conditions. Because manufacturers only provide a variety of fiber types for pellets, producers need long glass fiber pellets mixed with unreinforced polypropylene - a work step that provides additional requirements and a raw material supply system.
However, the degree of freedom that the injection molding compounding provides to the manufacturer can also be said to be a mixture of materials that improves the interpretability of the product and the reliability of the manufacturer. Producers must now take responsibility for ensuring quality and ensuring the quality of pellet manufacturing. There are potential opportunities for injection molding compounding to increase the additional prices created in production. (Finish)
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