Problema y solución

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Metallocene linear low density polyethylene blown film wrinkles

Wrinkles are caused by uneven thickness or unbalanced hauling, and need to be solved from thickness control, hauling and collapsing frame adjustment.

Extrusion & Post film wrinklesuneven thicknesshaul-off rollscollapsing framecooling line

Metallocene linear low density polyethylene metallocene linear low density polyethylene insufficient equipment maintenance during processing

Equipment maintenance is the foundation of stable production, requiring the establishment of a standardized periodic maintenance system and recording system.

Molds & Tooling equipment maintenancepreventive maintenancescrew clearancemold maintenancesensor calibration

Metallocene linear low density polyethylene blown film uneven thickness

Film thickness unevenness is caused by die gap, temperature or cooling unevenness, and needs to be solved from mold precision and process stability.

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

Metallocene linear low density polyethylene metallocene linear low density polyethylene large barrel temperature fluctuations during processing

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

Processing Machinery temperature fluctuationheater bandthermocoupletemperature control instrumentPID parameters

Metallocene linear low density polyethylene film blocking/poor opening

Film blocking is caused by surface tension and temperature, and needs to be solved by adding anti-blocking agents and controlling winding conditions.

Extrusion & Post film blockinganti-blocking agentwinding temperaturewinding tensionslip agent

Metallocene linear low density polyethylene metallocene linear low density polyethylene process transition problems when switching production between different processing methods

Production-switch transition requires advance planning and adequate preparation; the key is to clarify the differentiated material requirements of different processing methods.

Extrusion & Post production switchprocessing methodprocess parametersmaterial gradetrial production verification

Metallocene linear low density polyethylene film insufficient strength

Insufficient film strength is caused by improper material selection or process parameters, requiring optimization from raw material, temperature and blow-up ratio.

Material Analysis film strengthMFRblow-up ratiodraw ratiomaterial degradation

Metallocene linear low density polyethylene blown film poor transparency

Poor transparency is caused by high crystallinity or impurities, and needs improvement by increasing temperature, speeding up cooling and selecting suitable materials.

Extrusion & Post poor transparencycrystallinitycooling ratenucleating agenthaze

Metallocene linear low density polyethylene film poor printability

Poor printability is caused by low surface energy, requiring corona treatment to increase surface tension to improve ink adhesion.

Extrusion & Post printabilitysurface energycorona treatmentink adhesionsurface tension

Metallocene linear low density polyethylene film insufficient heat seal strength

Insufficient heat seal strength is caused by improper temperature, pressure or time settings, requiring optimization of heat sealing process parameters.

Material Analysis heat seal strengthheat sealing temperatureheat sealing pressurefilm thicknessheat seal material

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