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Die marks/lines appearing on linear low-density polyethylene extruded products (variant: strengthened measures)

Die marks are caused by die inner wall damage or impurities; the die condition needs to be regularly cleaned and inspected. In different production scenarios, targeted preventive measures need to be taken.

Extrusion & Post die marksdie scratchesimpurity cleaningflow channel designscreen

Uneven thickness of linear low-density polyethylene blown film (variant: strengthened measures)

Uneven film thickness is caused by uneven die gap, temperature or cooling and needs to be solved from mold precision and process stability. In different production scenarios, targeted preventive measures need to be taken.

Extrusion & Post film thicknessdie gaptemperature uniformityair ring coolinghaul-off stability

Linear low-density polyethylene film blocking/poor opening (variant: strengthened measures)

Film blocking is caused by surface tension and temperature and needs to be solved by adding antiblocking agents and controlling winding conditions. In different production scenarios, targeted preventive measures need to be taken.

Extrusion & Post film blockingantiblocking agentwinding temperaturewinding tensionslip agent

Linear low-density polyethylene linear low-density polyethylene process handover problems when switching between different processing methods (variant: strengthened measures)

Changeover handover requires advance planning and full preparation; the key is to clarify the differentiated requirements of different processing methods on materials. In different production scenarios, targeted preventive measures need to be taken.

Extrusion & Post changeoverprocessing methodprocess parametersmaterial gradetrial production verification

Poor transparency of linear low-density polyethylene blown film (variant: strengthened measures)

Poor transparency is caused by high crystallinity or impurities and needs to be improved by increasing temperature, accelerating cooling and selecting suitable materials. In different production scenarios, targeted preventive measures need to be taken.

Extrusion & Post poor transparencycrystallinitycooling ratenucleating agenthaze

Head pressure fluctuation of linear low-density polyethylene extruder (variant: strengthened measures)

Head pressure fluctuation is caused by unstable output or filtration system problems; extrusion parameters need to be stabilized and the filtration system maintained. In different production scenarios, targeted preventive measures need to be taken.

Extrusion & Post pressure fluctuationscreenhead temperaturebreaker plateuniform output

Haul-off speed mismatch of linear low-density polyethylene extruded products (variant: strengthened measures)

Haul-off speed mismatch needs to be solved by precisely adjusting haul-off parameters and ensuring haul-off stability. In different production scenarios, targeted preventive measures need to be taken.

Extrusion & Post haul-off speedspeed matchinghaul-off slippingclamping forcehaul-off control

Excessive shrinkage of linear low-density polyethylene extruded products (variant: strengthened measures)

Excessive shrinkage is caused by high crystallinity or high temperature and needs to be solved by controlling temperature and cooling rate. In different production scenarios, targeted preventive measures need to be taken.

Extrusion & Post shrinkage ratecrystallinitymelt temperaturecooling ratehaul-off speed

Poor printability of linear low density polyethylene film (Variant: strengthened measures)

Poor printability is caused by low surface energy; ink adhesion needs to be improved by increasing surface tension through corona treatment. Targeted preventive measures need to be taken in different production scenarios.

Extrusion & Post printabilitysurface energycorona treatmentink adhesionsurface tension

Longitudinal reversion of linear low density polyethylene pipes exceeding standard (Variant: strengthened measures)

Excessive reversion is caused by large internal stress or excessive orientation; it needs to be solved from temperature control, cooling rate, and haul-off speed. Targeted preventive measures need to be taken in different production scenarios.

Extrusion & Post longitudinal reversioninternal stresscooling ratehaul-off speedmolecular orientation

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