Problem & Solution

Q

Large current fluctuation of heat-resistant polyethylene extruder (Variant: strengthened measures)

A

Current fluctuation is caused by large plasticizing resistance or equipment problems, and needs to be solved from temperature control, raw material purity and equipment maintenance. Targeted preventive measures need to be taken in different production scenarios.

Processing Machinery current fluctuationscrew torqueplasticizing temperatureraw material impuritiesscreen pack clogging

Q

Poor plasticization caused by screw wear of heat-resistant polyethylene extruder (Variant: strengthened measures)

A

Screw wear leads to decreased plasticizing efficiency, and needs to be solved by selecting wear-resistant materials and regular maintenance. Targeted preventive measures need to be taken in different production scenarios.

Processing Machinery screw wearpoor plasticizationwear-resistant materialscrew gapscrew rotation speed

Q

Large barrel temperature fluctuation in heat-resistant polyethylene heat-resistant polyethylene processing (Variant: strengthened measures)

A

Barrel temperature fluctuation is caused by heating or temperature control system failure, and heating rings, thermocouples and temperature control instruments need to be regularly inspected and maintained. Targeted preventive measures need to be taken in different production scenarios.

Processing Machinery temperature fluctuationheating ringthermocoupletemperature control instrumentPID parameters

Q

Frequent screen change/short screen pack life of heat-resistant polyethylene extruder (Variant: mass production scenario)

A

Frequent screen pack clogging is caused by raw material impurities or improper process, and needs to be solved from raw material management and temperature control. Targeted preventive measures need to be taken in different production scenarios.

Processing Machinery screen packimpuritiescarbonized matterbarrel temperaturescreen change frequency

Q

Wide temperature window of heat-resistant polyethylene PE raw material causes difficulty in process parameter optimization (Variant: strengthened measures)

A

PE temperature window optimization needs to be advanced from two aspects: systematic experiments and experience accumulation. Targeted preventive measures need to be taken in different production scenarios.

Processing Machinery temperature optimizationPE gradeDOEprocess parameterstemperature database

Q

Heat-resistant polyethylene extruder screw design mismatch (Variant: mass production scenario)

A

Screw design needs to match material characteristics and product requirements, and a dedicated screw should be customized when necessary. Targeted preventive measures need to be taken in different production scenarios.

Processing Machinery screw designcompression ratiolength-to-diameter ratiomixing elementscrew matching

Q

Frequent screen change/short screen pack life of heat-resistant polyethylene extruder (Variant: strengthened measures)

A

Frequent screen pack clogging is caused by raw material impurities or improper process, and needs to be solved from raw material management and temperature control. Targeted preventive measures need to be taken in different production scenarios.

Processing Machinery screen packimpuritiescarbonized matterbarrel temperaturescreen change frequency

Q

Glossless surface of heat-resistant polyethylene extruded products (Variant: mass production scenario)

A

Surface glosslessness is caused by low die temperature or too fast cooling, and the die temperature needs to be increased and cooling slowed down. Targeted preventive measures need to be taken in different production scenarios.

Processing Machinery glosslessnessdie temperaturecooling ratedie polishingmelt temperature

Q

Rough inner wall of heat-resistant polyethylene extruded products (Variant: mass production scenario)

A

Inner wall roughness is caused by low mandrel temperature or poor surface condition, and needs to be solved from temperature control and mold maintenance. Targeted preventive measures need to be taken in different production scenarios.

Processing Machinery inner wall roughnessmandrel temperaturemandrel polishingmelt temperatureplasticizing quality

Q

Heat-resistant polyethylene extruder screw design mismatch (Variant: strengthened measures)

A

Screw design needs to match material characteristics and product requirements, and a dedicated screw should be customized when necessary. Targeted preventive measures need to be taken in different production scenarios.

Processing Machinery screw designcompression ratiolength-to-diameter ratiomixing elementscrew matching

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