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Twin Screw Extruder Extruder Principle
- Jul 14, 2017 -

Twin Screw Extruder Extruder principle

First, the twin-screw extruder has a single-screw extruder extruder principle: solid transport melt booster and pumped blend stripping and de-evaporation, but not simply so.

From its extrusion process research is divided into three parts:

1, to clarify the two or more polymers and materials in the extrusion process of changes in the real situation, mixed shape, structural changes in the process, and the final mixture and function of the link.

2, as a twin-screw extruder, extrusion reaction process when the reaction process, speed, function and screw configuration, operating conditions between the intrinsic link, establish a model to guide the reaction molding extrusion.

The twin screw extruder has long lasting reliability

Century extrusion and the world's leading supplier of twin-screw transmission box to develop a high speed, high torque transmission box. In addition to high power, high safety factor, the century out of the gear box of the main bearing life of up to 50,000 hours.

Commodity code standard parameters

Description: For example, SHJM-Z40 × 25 × 800, refers to the screw diameter of 40mm, length to diameter ratio of 25, traction roller length of 800mm twin-screw mixed plastic extrusion film machine.

1, "SH" category code, refers to the twin-screw hybrid (also written: SHSJ, SJ refers to the plastic extruder)

2, "J" group code, refers to the extruder.

3, "M" refers to the type code, refers to blown film machine

4, "Z" refers to the auxiliary code, referring to the primary unit, the other is "F" refers to the auxiliary machine.

5, "40 × 25 × 800" refers to the standard parameters, refers to the screw diameter of 40mm, length to diameter ratio of 25, traction roller length of 800mm.

6, the final one for the manufacturers to identify the serial number, usually not present, is omitted

Second, the function of the twin-screw mixing extruder function

1, "D" for the diameter, measure the output value of a primary parameter.

2, "L / D", refers to the length and diameter of the share, a direct impact on the degree of plasticity, is a measure of the use of the symbol, usually plastic modification, with 30-40 or so, commonly used 36: 1

Or 30: 1.

3, "H", the depth of the groove, refers to the size of its storage space.

4, "e" rib edge thickness, technical body is now cut the size.

5, "6" screw with the barrel of the gap, the extruder quality of a primary parameter, usually in the 0.3-2mm, skip the 5mm extruder is the police line.

6, "N" host speed, referring to its highest value, refers to a processing adjustment scale, greatly affect the output value and the distinction between high and low speed. (Domestic machine usually 500-600r / min)

Such as: max: 600r / min, low speed: 350r / min, medium speed 230-240r / min, high speed 450-600r / min.

7, "P", motor power and heating power.

Third, the screw placed and its technical settings

① screw section and its function

(1) screw is usually divided into: transport section, melting section mixing section, exhaust section, equalization section 5 segments.

1, transport section, transport materials, to prevent the material.

2, the melting section, this section after heat transfer and conflict shear, so that the material is full of melting and homogenization.

3, mixing section, so that the material composition of the scale to further refine and uniform, constitute the structure of the ample, with a mixture of dispersion and laxative function.

4, exhaust section, discharge of water vapor, low molecular weight substances and other impurities.

5, homogenization (measurement) section, transport and pressurization, establish a certain pressure, so that the mouth of the material must have a certain density, together with the further mixing, and finally reach the smooth extrusion granulation intention. First, the twin-screw extruder has a single-screw extruder extruder principle: solid transport melt booster and pumped blend stripping and de-evaporation, but not simply so.

From its extrusion process research is divided into three parts:

1, to clarify the two or more polymers and materials in the extrusion process of changes in the real situation, mixed shape, structural changes in the process, and the final mixture and function of the link.

2, as a twin-screw extruder, extrusion reaction process when the reaction process, speed, function and screw configuration, operating conditions between the intrinsic link, establish a model to guide the reaction molding extrusion.

The twin screw extruder has long lasting reliability

Century extrusion and the world's leading supplier of twin-screw transmission box to develop a high speed, high torque transmission box. In addition to high power, high safety factor, the century out of the gear box of the main bearing life of up to 50,000 hours.

Commodity code standard parameters

Description: For example, SHJM-Z40 × 25 × 800, refers to the screw diameter of 40mm, length to diameter ratio of 25, traction roller length of 800mm twin-screw mixed plastic extrusion film machine.

1, "SH" category code, refers to the twin-screw hybrid (also written: SHSJ, SJ refers to the plastic extruder)

2, "J" group code, refers to the extruder.

3, "M" refers to the type code, refers to blown film machine

4, "Z" refers to the auxiliary code, referring to the primary unit, the other is "F" refers to the auxiliary machine.

5, "40 × 25 × 800" refers to the standard parameters, refers to the screw diameter of 40mm, length to diameter ratio of 25, traction roller length of 800mm.

6, the final one for the manufacturers to identify the serial number, usually not present, is omitted

Second, the function of the twin-screw mixing extruder function

1, "D" for the diameter, measure the output value of a primary parameter.

2, "L / D", refers to the length and diameter of the share, a direct impact on the degree of plasticity, is a measure of the use of the symbol, usually plastic modification, with 30-40 or so, commonly used 36: 1

Or 30: 1.

3, "H", the depth of the groove, refers to the size of its storage space.

4, "e" rib edge thickness, technical body is now cut the size.

5, "6" screw with the barrel of the gap, the extruder quality of a primary parameter, usually in the 0.3-2mm, skip the 5mm extruder is the police line.

6, "N" host speed, referring to its highest value, refers to a processing adjustment scale, greatly affect the output value and the distinction between high and low speed. (Domestic machine usually 500-600r / min)

Such as: max: 600r / min, low speed: 350r / min, medium speed 230-240r / min, high speed 450-600r / min.

7, "P", motor power and heating power.

Third, the screw placed and its technical settings

① screw section and its function

(1) screw is usually divided into: transport section, melting section mixing section, exhaust section, equalization section 5 segments.

1, transport section, transport materials, to prevent the material.

2, the melting section, this section after heat transfer and conflict shear, so that the material is full of melting and homogenization.

3, mixing section, so that the material composition of the scale to further refine and uniform, constitute the structure of the ample, with a mixture of dispersion and laxative function.

4, exhaust section, discharge of water vapor, low molecular weight substances and other impurities.

5, homogenization (measurement) section, transport and pressurization, establish a certain pressure, so that the mouth of the material must have a certain density, together with the further mixing, and finally reach the smooth extrusion granulation intention.