문제 및 해결책

Q

Insufficient heat seal strength of metallocene linear low-density polyethylene film (variant: startup commissioning scenario)

A

Insufficient heat seal strength is caused by improper temperature, pressure or time settings; heat seal process parameters need to be optimized. In different production scenarios, targeted preventive measures need to be taken.

Processing Machinery heat seal strengthheat seal temperatureheat seal pressurefilm thicknessheat seal material

Q

Insufficient heat seal strength of metallocene linear low-density polyethylene film (variant: strengthened measures)

A

Insufficient heat seal strength is caused by improper temperature, pressure or time settings; heat seal process parameters need to be optimized. In different production scenarios, targeted preventive measures need to be taken.

Processing Machinery heat seal strengthheat seal temperatureheat seal pressurefilm thicknessheat seal material

Q

Improper processing temperature window selection for metallocene linear low-density polyethylene metallocene linear low-density polyethylene (variant: startup commissioning scenario)

A

Temperature window selection is the foundation of processing and needs to be reasonably set according to material characteristics and actual operating experience. In different production scenarios, targeted preventive measures need to be taken.

Processing Machinery processing temperaturetemperature windowplasticization qualitymaterial degradationtemperature calibration

Q

Improper processing temperature window selection for metallocene linear low-density polyethylene metallocene linear low-density polyethylene (variant: strengthened measures)

A

Temperature window selection is the foundation of processing and needs to be reasonably set according to material characteristics and actual operating experience. In different production scenarios, targeted preventive measures need to be taken.

Processing Machinery processing temperaturetemperature windowplasticization qualitymaterial degradationtemperature calibration

Q

Uneven cutting end face of linear low-density polyethylene pipes

A

Uneven cutting end faces are caused by tool wear or improper cutting parameters; tools need to be maintained and the cutting process optimized.

Processing Machinery cutting end facecutting toolcutting speedpipe coolingcutting machine correction

Q

Excessive gel/gel particles in linear low-density polyethylene extruded products

A

Gel is caused by insufficient plasticization or raw material quality problems and needs to be solved from temperature control, screw design and raw material selection.

Processing Machinery gelgel particleplasticizing temperaturescrew mixingscreen mesh count

Q

Large current fluctuation of linear low-density polyethylene extruder

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.

Processing Machinery current fluctuationscrew torqueplasticizing temperatureraw material impuritiesscreen clogging

Q

Linear low-density polyethylene pipe failing pressure test

A

Pressure test failure is caused by insufficient wall thickness, material degradation or internal defects and needs to be systematically solved from process and material quality.

Processing Machinery pressure testpipe wall thicknessmaterial degradationcrystallinityplasticization quality

Q

Poor plasticization caused by screw wear of linear low-density polyethylene extruder

A

Screw wear reduces plasticization efficiency and needs to be solved by selecting wear-resistant materials and regular maintenance.

Processing Machinery screw wearpoor plasticizationwear-resistant materialscrew clearancescrew speed

Q

Large barrel temperature fluctuation during linear low-density polyethylene linear low-density polyethylene processing

A

Barrel temperature fluctuation is caused by heating or temperature control system failures; heating bands, thermocouples and temperature control instruments need regular inspection and maintenance.

Processing Machinery temperature fluctuationheating bandthermocoupletemperature control instrumentPID parameters

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