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General-purpose polyethylene injection molded products flash/burrs

Flash is a manifestation of mismatch between mold clamping force and injection pressure, requiring control from three aspects: clamping force, injection pressure and mold precision.

Extrusion & Post flashclamping forceinjection pressureparting linemold gap

General-purpose polyethylene injection molded products flash/burrs（Variant: Strengthened Measures）

Flash is a manifestation of mismatch between mold clamping force and injection pressure, requiring control from three aspects: clamping force, injection pressure and mold precision.Targeted preventive measures need to be taken in different production scenarios.

Extrusion & Post flashclamping forceinjection pressureparting linemold gap

Metallocene linear low density polyethylene film cooling line height instability

Cooling line instability is caused by fluctuations in cooling or extrusion conditions, requiring stabilization of air ring parameters and environmental conditions.

Extrusion & Post cooling linefrost lineair ring stabilityextrusion temperatureambient airflow

Metallocene linear low density polyethylene film gel particles/gel granules

Gel particles are caused by insufficient plasticization or raw material quality problems, and need to be solved from temperature control and raw material quality.

Extrusion & Post gel particlesgelplasticizing temperaturescrew mixingfilter screen

Metallocene linear low density polyethylene cast film uneven thickness

Cast film thickness unevenness is caused by die gap or temperature unevenness, and needs to be solved from mold precision and temperature uniformity.

Extrusion & Post cast filmuneven thicknessT-dielip gapair knife

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 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 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 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

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Alle Themen 11636 Material Drying 1439 Injection Molding 1506 Molding Process 740 Molds & Tooling 1506 Processing Machinery 2025 Extrusion & Post 2239 Blow Molding 315 Thermoforming 141 Material Analysis 1343 Production & Quality 382

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